Part 
Folio 

Heading 
  

1
 1rA   Cranks with connecting rods (1): deadlock 
1
 1rB  *  Conical flame and round water drop 
1
 1vA  *  Date 01/01/1493 
1
 1vB  *  Compasses for large circles 
1
 1vC   Gears (1): clockwork 
1
 1vD   Transmission by gears, belts or contact compared 
1
 1vE  *  Word list with prefix ass... 
1
 1vF  *  Browning and etching of iron 
1
 2r   Conversion of rotation into alternating linear motion by means of racks and segmented wheels 
1
 2vA   Conversion of rotation into alternating linear motion by a crankshaft with gear and worm drive 
1
 2vB  °  Transmission of the vault's thrust on supporting pillars 
1
 2vC   Rollers with skewed plank or diagonal axis 
1
 3r   Directions of rotation of gear wheels 
1
 3vA   Gears (2): transmission of force with gear teeth 
1
 3vB  *  Word list with prefix ab... 
1
 4r   Clock: compensation of declining spring force 
1
 4vA   Screw: instrument for measuring the force of a screw drive 
1
 4vB   Forces of leaf springs 
1
 5rA   Gears (3): transmission of force and points of contact 
1
 5rB  *  Mathematical ratios 
1
 5vA   Gears (4): width of the teeth 
1
 5vB  *  Optics: refraction of sunbeams in the atmosphere 
1
 5vC   Joint and clamp connections 
1
 6rA  *  Praise and recommendation of the book 
1
 6rB  °  Position of the centres of gravity of earth and water spheres and the entire world 
1
 6rC   Cranks with connecting rods (2): deadlock 
1
 6vA  *  Optics: shape of shadows in sunlight 
1
 6vB   Sickle cam for a hammer mill 
1
 6vC  *  Pump (?) 
1
 7rA   Conversion of rotation into alternating linear motion by cam control 
1
 7rB   Gears (5): number of teeth, points of contact, transmission of force 
1
 7v   Sliding bars moved by rope and bell crank with joints 
1
 8r   Escapement and step control for clocks or mechanical saws 
1
 8vA   Conversion of rotation into oscillation 
1
 8vB   Hammer with eccentric gear drive 
1
 9rA   Lift with a winch, cable friction and gears 
1
 9rB   Clock: spindle escapement of a clock weight 
1
 9vA   Clock: springs and striking train with camdrive 
1
 9vB   Automatically opening hooks for load lifters 
1
 10rA   Transmission chains (joint and link chains) 
1
 10rB   Clock: control mechanism for a twelvehour striking train with ringshaped steel spring (count wheel) 
1
 10rC   Water lifting device with paddle wheel drive 
1
 10vA   Lantern pinions with roller teeth 
1
 10vB   Clock: planetmover for astronomical clocks 
1
 11rA   Clock: moon phase indicator (perhaps designed after Chiaravalle) 
1
 11rB   Lock: rotary lever with spring tension 
1
 11vA   Clock: elements of clockwork 
1
 11vB   Gearings 
1
 12rA   Clock: control mechanism for a striking train (count screw) 
1
 12rB  °  Balance of force with levers and pulleys 
1
 12v   Bearing: antifriction bearings (multiple discs, pendulum supports) 
1
 13r   Friction: consumption of shafts, axles, drive teeth and rods 
1
 13vA   Gears (6): directions of rotation 
1
 13vB   Clock: control of striking train 
1
 13vC   Clock: compensation of declining spring force 
1
 13vD   Gimbals for a compass 
1
 14rA   Clock: compensation of declining spring force 
1
 14rB   Bearing and drive of toothed rings 
1
 14vA   Flat profile production: drawing of spring steel for clock springs 
1
 14vB   Screw: use of screws 
1
 15r   Clock: control mechanism for a striking train (count screw) 
1
 15v   Gears (7): tooth spacing, direction of rotation, angle transmission, worm drive, planetary gear 
1
 16r   Clock: compensation of declining spring force 
1
 16vA   Transmission technology: variants of opposing rotational motions 
1
 16vB   Helical torus (1) 
1
 16vC   Transmission technology: gearing of intersecting shafts; risk of torsion with long shafts 
1
 17r   Conversion of continuous rotation into oscillating rotation 
1
 17vA   Screw: worm drives for winches 
1
 17vB   Conversion of rotation into alternating linear motion e.g. for a saw 
1
 18rA   Oscillating motion of mass by example of a crucible 
1
 18rB   Automatic up and down motion by a worm gear with intersecting threads 
1
 18vA   Screw: double globoid worm drive and rotary lever in circular drive 
1
 18vB   Ring of a spiral spring 
1
 18vC  *  Matchlock for a scoppietto 
1
 19rA   Clock: globoid worm drive for torque compensation 
1
 19rB  *  Tensions into oscillation 
1
 19vA   Conversion of oscillating rotation into constant rotation using a free wheeling hub (1) 
1
 19vB   Screw jack: congruence of the lines of weight and force 
1
 20rA   Conversion of oscillating rotation into constant rotation using a free wheeling hub (2) 
1
 20rB   Gears (8): consumption 
1
 20vA   Bearing: ballbearing 
1
 20vB   Gears (9): directions of rotation 
1
 20vC   Drill: gimlet 
1
 21rA   Conversion of oscillating rotation into constant rotation using a free wheeling hub (3): kinetic energy and impetus 
1
 21rB  *  Impetus of rotating millstones 
1
 21vA   Flour shaker of a grain mill 
1
 21vB   Turnpike barrier or ladder with crank 
1
 22rA   Lifting claws for large stones 
1
 22rB   Flour shaker and millstones of a grain mill 
1
 22v   Water power: Kinetic and potential energy of water falling onto a bucket wheel 
1
 23r   Belt drives: easy to make, silent operation 
1
 23vA   Lock technique: pincer locks 
1
 23vB   Drill: tripods for augers and load lifters 
1
 24r   Conversion of rotation into alternating linear motion by a slot, an elliptical gear, or an eccentric disk 
1
 24vA   Tooth gear versus belt drive 
1
 24vB   Drills with crankshaft 
1
 24vC   Lazy tongs with screw propulsion 
1
 25r   Screw: motion screw for an umbrella? 
1
 25v   Manufacture of pumps and pipes 
1
 26rA   Screw jack: overloading the wooden supports of a tetrapod 
1
 26rB   Bearing: comparison of ball and roller bearings 
1
 26v   Directions of rotation of wheels in friction gears 
1
 27rA   Clock: weight drive with tackle 
1
 27rB   Conversion of rotation into alternating linear motion 
1
 27v   Clock: 24 hour striking train 
1
 28r   Conversion of rotation into slow alternating linear motion 
1
 28v   Conversion of rotation into alternating linear motion by an eccentric gearing 
1
 29rA   Use of leverage in transmissions with continuously variable ratio 
1
 29rB   Raising a beam with a rocker lever (1) 
1
 29v   Thread winder with axially oscillating feed of the rotating bobbin 
1
 30r   Conversion of rotation into pushing and pulling of a rod 
1
 30v   Conversion of rotation into alternating motion of belt and rod 
1
 31r   Sector gear with rods and cable transmission 
1
 31vA  *  Optics: light angle and shadow (1) 
1
 31vB   Operation of stone saws 
1
 32rA  *  Optics: light angle and shadow (2) 
1
 32rB   Leveling device with front and rear sights and fine adjustment 
1
 32rC   Clock: the effect of a fly depends on the number and shape of its wings 
1
 32vA   Conversion of rotation into alternating linear motion by rods and a cam gear 
1
 32vB   Hydraulic balance for measuring of specific gravities (2) 
1
 33r   Hydraulic balance for measuring of specific gravities (1) 
1
 33vA   Methods to draw a heavy load onto a wagon (1) 
1
 33vB   Screw press with a differential screw 
1
 34r   Screw jack for moving and erecting of columns 
1
 34v   Methods to draw a heavy load onto a wagon (2) 
1
 35r   Same force with different load lifters 
1
 35v   Gear rack winch with worm drive 
1
 36r   Screw jacks as pulling devices or clamps 
1
 36v   Multiple transmissions with gears and tackles 
1
 37r42v   [missing leafs] 
1
 43r   Raising a pile 
1
 43v   Raising a beam with a rocker lever (2) 
1
 44r   Raising a beam with a rocker lever (3) 
1
 44v   Stretching and pulling mechanism with annular hoist 
1
 45rA   Clock: compensation of declining spring force 
1
 45rB   Bridge for wide span made of short beams (1) 
1
 45vA   Flywheel with double camshaft 
1
 45vB   Wedge press for stamping of medals 
1
 46rA  *  Bridge for wide span made of short beams (2) 
1
 46rB   Screw: epicyclic gear with internal and external thread 
1
 46v   Wedge press for an oil mill (1) 
1
 47rA   Wedge press for an oil mill (2) 
1
 47rB   Wedging force: transmission cascade of nine successive wedges 
1
 47vA   Lock technique: pincer locks 
1
 47vB   Impulse: blow of hammers with rigid and elastic stems 
1
 47vC   Bearing: trunnion bearing for guns 
1
 47vD   Redirecting a cable drive for a drill 
1
 48rA   Climbing with a rope 
1
 48rB   Lockable kickstand 
1
 48rC   Leaf of a floodgate 
1
 48vA   Clock: escapement influenced by humidity 
1
 48vB   Bearing: roller bearings 
1
 48vC   Lock technique: difference between the lines of force and motion of the key 
1
 49rA   Lock technique: search for favourable angle of rotation for keys 
1
 49rB   Clock: spindle escapement 
1
 49rC   Load lifter of wound ropes for low heights 
1
 49vA  *  Rectangles, partly formed from bars 
1
 49vB   Lock mechanisms 
1
 50r   Lock technique: pincer locks 
1
 50vA  *  Impact: penetration of arrows in various materials 
1
 50vB  *  Primary and secondary motion (3): angle of a crossbow's bowstring 
1
 50vC  *  Crossbow: planning for tests 
1
 51rA  *  Primary and secondary motion (1): angle of the bowstring and weight of the arrow 
1
 51rB  *  Primary and secondary motion (2): the time while firing an arrow 
1
 51vA  *  Primary and secondary force (1): natural philosophical theory of force 
1
 51vB   Primary and secondary force (2): torque transmission by a gear train 
1
 52r  °  Primary and secondary force (3): lever and definition of torque 
1
 52v  °  Relation between force, weight and motion 
1
 53rA  *  Relation between driving and driven motion when shooting with a crossbow 
1
 53rB   Tool for cutting or filing iron rods 
1
 53vA   Kite or wind rotor for load lifting 
1
 53vB   Construction of a stretcher frame for a canvas (1) 
1
 54rA   Construction of a stretcher frame for a canvas (2) 
1
 54rB   Drill: core drill 
1
 54vA  *  Range of a counterweight catapult in relation to its lever arm 
1
 54vB  *  Proportionality of counterweight and range of the crossbow 
1
 55r56v   [missing leafs] 
1
 57r   Crossbow with arc mounted backwards 
1
 57vA   Screw: transmission made of retrograde screws (1) 
1
 57vB  °  Load distribution when lifting 
1
 57vC  *  Perpetual motion wheel with gravity drive by pumping mercury 
1
 58rA   Screw: transmission made of retrograde screws (2) 
1
 58rB   Carriage steering 
1
 58vA  *  Gun shots with two balls. Relation of shot direction to the moving and retarding element 
1
 58vB  *  Gun shots upwards. Relation of shot direction to the moving and retarding element 
1
 59rA  *  Crossbow: weight and height of fall of arrows is proportional to the load 
1
 59rB  *  Gauge for depth of impact 
1
 59vA  °  Impact: effect of a stroke 
1
 59vB  *  Arquebus and rocket: experiments on noise, muzzle flash and range 
1
 60rA  *  Driving force of gun powder: comparing its weight to the counterweight of a crossbow 
1
 60rB   Velocity of fall measured by visual and acoustic means 
1
 60vA  °  Impossibility of drawing a point onto a moving object 
1
 60vB  °  Mnemonics for the natural motion of heavy bodies towards the centre of the world 
1
 60vC  *  Grinding machine for concave surfaces 
1
 60vD   Raising a mast on a sailing ship 
1
 61rA   Path of a bouncing ball compared to direct linear motion; rising and descending forces 
1
 61rB  *  Mirror polishing machine 
1
 61v   Pendulum drive in the manner of a spindle escapement 
1
 62r   Wedge tenon joints for table legs and compass axles 
1
 62v   Shock absorber (1): function and application 
1
 63rA   Shock absorber (2): mechanical principle 
1
 63rB   Surgical forceps with screw clamps 
1
 63rC  °  Impulse: influence of hardness and elasticity 
1
 63v   Sickle cam versus rod cam 
1
 64r   Wind ball and kite 
1
 64vA  °  Relative speed of opposing movements 
1
 64vB  °  Momentum of balance beams (1): oblique lever 
1
 64vC  °  Relative motions of roller and inclined plane 
1
 65rA  °  Friction: rolling and sliding motion 
1
 65rB  °  Forces on a roller suspended by inclined cords 
1
 65v   Twisting machine with a small bobbin 
1
 66rA   Twisting machine with large reel wheel 
1
 66rB   Bearing: double wheel thrust bearing for a vertical shaft (for the twisting machine on fol. 67r) 
1
 66vA   Lock technique: search for favourable angle of rotation for keys 
1
 66vB   Cushioned rim 
1
 66vC   Changeable handle to protect one's hand in front of fireplaces 
1
 66vD   Hinges for automatically closing gates 
1
 67rA   Twisting machine with multiple bobbins 
1
 67rB   Fittings for a door with hinges on both sides 
1
 67v   Twisting machine with multiple bobbins: general design, for 4 or 18 women workplaces 
1
 68rA   Thread separating frame to produce rope for standing rigging 
1
 68rB   Gears (of a textile machine) 
1
 68rC  °  Burden of pulleys 
1
 68v   Twisting machine with two units 
1
 69r  °  Water power: Influence of fall angle and weight of water on the propulsion of a mill's wheel 
1
 69vA   Carriage axle 
1
 69vB  *  Treadmill with load lifter 
1
 70rA   Helical torus (2) 
1
 70rB   Clock: bell striker 
1
 70vA  °  Leverage when tipping a heavy block (1): balance between loaded ropes 
1
 70vB   Conversion of oscillating rotation into constant rotation using a free wheeling hub (4): treadmill driven by a man 
1
 71r  °  Weights on pulleys 
1
 71v  °  Leverage when tipping a heavy block (2): general rule 
1
 72r  °  Leverage when tipping a heavy block (3) 
1
 72vA  °  Leverage when tipping a heavy block (4): geometry of the imaginary lever 
1
 72vB  *  Flow of wind and water through funnels of different shapes 
1
 73r  °  Leverage when tipping a heavy block (5): limit between tipping and sliding 
1
 73v  °  Leverage when tipping a heavy block (6): general rule 
1
 74rA  °  Force action when pulling heavy bodies (1) 
1
 74rB  *  Perpetual motion wheel with gravity drive by pumping wine 
1
 74v  °  Force action when pulling heavy bodies (2): sliding and rolling friction with rectangular and round bodies 
1
 75rA  °  Tensions in inclined ropes (8): calculation of the forces 
1
 75rB  *  Manufacture of conical drums for polishing a concave mirror 
1
 75v  °  Tensions in inclined ropes (1): comparison of tensions in vertical and inclined ropes 
1
 76r  °  Tensions in inclined ropes (2): calculation by triangles 
1
 76v  °  Tensions in inclined ropes (3): calculation by triangles; crane 
1
 77r  °  Tensions in inclined ropes (4): geometric description of the forces; crane 
1
 77v  °  Tensions in inclined ropes (5): tension depends on the angle 
1
 78r  °  Tensions in inclined ropes (6): calculation by triangles 
1
 78v  °  Geometrical terminology and propositions 
1
 79rA  °  Tensions in inclined ropes (7): same forces in short and long ropes 
1
 79rB  °  Winches and load lifters: terminology 
1
 79vA   Lock springs 
1
 79vB   Trunnions for wooden shafts secured against torsion 
1
 79vC  *  Perpetual motion wheel with gravity drive by pumping liquid 
1
 80r  °  Weight changes during the rotation of an eccentric weight 
1
 80vA  °  Weight changes in the accelerated fall 
1
 80vB   Locking lever 
1
 81r   Clock: control mechanism for a striking train (count drum) 
1
 81vA   Screw press with counterweights 
1
 81vB  *  Bending and bracing of a beam 
1
 81vC  *  Rocket, launched by a cannon ball 
1
 82r   Announcing a treatise on screws, levers, ratchet wheel, flywheel etc. 
1
 82vA  °  Momentum of balance beams (2): oblique lever 
1
 82vB   Procedure for ploughing a long straight furrow 
1
 83rA  *  Dividing a small number by a large number 
1
 83rB  °  Types of beams, derived from beam balances 
1
 83v   Flat profile production: plane for producing wood strips for sword scabbards 
1
 84rA   Flat profile production: planing machine on a type of wiredrawing machine for making bands of iron 
1
 84rB   Length of connecting rod and path of motion 
1
 84vA   Elasticity of springs, tempering of spring steel 
1
 84vB   Aligning the objects by dragging on one end 
1
 85r   Clock: compensation of declining spring force and spring characteristics 
1
 85vA   Virtual and physical lever 
1
 85vB  °  Aligning of beams by pulling on one point 
1
 85vC  °  Distribution of load on the two arms of a leaf spring or a bow 
1
 85vD  *  Manufacture of steel racks, the direction of forging 
1
 86r   Cranks with connecting rods (3): deadlock and leverage 
1
 86v   Screw: equivalence between screw thread and inclined plane 
1
 87rA   Directions of rotation in belt and rope transmissions (1) 
1
 87rB  °  Statics of a beam suspended over two pulleys 
1
 87vA  °  Tensions in inclined ropes (9): vertical component of force 
1
 87vB  *  Lament about nature 
1
 88rA  °  Tensions in inclined ropes (10): beam balances 
1
 88rB   Directions of rotation in belt and rope transmissions (2) 
1
 88v  °  Acceleration of a heavy body approaching to the centre of the earth 
1
 89r  °  Momentum of balance beams (3): differing distribution of weights 
1
 89v  °  Impact: transforming a cube into a disk by a blow (1), steps of deformation 
1
 90rA  °  Impact: transforming a cube into a disk by a blow (2), definition of the centre of shape 
1
 90rB  °  Weightlessness while jumping and doubling ones own weight on the take off point 
1
 90rC   Bridge made of wood 
1
 90v  *  Cable pulley machine for step motion (of the mechanical lion?) (1) 
1
 91r  *  Cable pulley machine for step motion (of the mechanical lion?) (2) 
1
 91vA   Screw: cutting lathe 
1
 91vB  *  Drum machine 
1
 92r   [This page is empty] 
1
 92vA   Wedging force: winch driven by wedge hammers 
1
 92vB   Gears on spiral rod and sawtoothed segmented gear 
1
 93r   Winch with a wedge drive (like a ratchet) 
1
 93v   Problems and forces in turning carriages and rotary lever arms 
1
 94rA   Crossbow lock with double set trigger 
1
 94rB   Screw: measuring its leverage 
1
 94v  °  Momentum of balance beams (4): calculation at screw and balance cascade 
1
 95r  °  Experiments on natural movement of light and heavy elements 
1
 95vA  °  Wave formation and circular motion of water in round dishes 
1
 95vB  *  Transmission with rhythmically varied ratio 
1
 95vC  *  Flamethrower of two related gun barrels for destroying fortress gates 
  

2
 1r (190v)   Sentences on movement, free fall and impetus 
2
 1v (190r)   Sentences on gravity, free fall, impetus, lever arm, supports and centre line 
2
 2r (189v)   Impact of falling weights.  Static moment.  Carrying capacity of bundled supports.  Aair resistance of a hammer 
2
 2v (189r)   Sentences on force, motion and impact 
2
 3r (188v)A   Impact of falling weights 
2
 3r (188v)B  °  Screw jack: transmission 
2
 3v (188r)A  *  Static moments on beam balances (1): centre of the weight 
2
 3v (188r)B   Impetus and motion 
2
 4r (187v)   Impulse: shock effect and reflected motion 
2
 4v (187r)   Natural motion to the centre of the light spheres.  Elasticity, impact and strength of a rope, friction force 
2
 5r (186v)   Lines of motion: skidding, blow, shock.  Resonance 
2
 5v (186r)   Motion, impulse, reflection.  Pressure on inclined plane 
2
 6r (185v)   Impact: effect of shock and stroke; greater damage by turbid water 
2
 6v (185r)   Impulse: drive due to shock and impact 
2
 7r (184v)   Impulse: drive due to shock and impact 
2
 7v (184r)   Shock as end of motion, performance of a ballista, motions of different bodies after collision 
2
 8r (183v)   Theory of reflection.  Flow velocity of water.  Canon ball damages wall by air pressure 
2
 8v (183r)   Recoil in relation to explosion.  Centre of gravity of self moving bodies.  Pendulum oscillations 
2
 9r (182v)   Natural and accidental motion of pendulums.  Composite motion and its acceleration effect 
2
 9v (182r)   Direction of rising and falling motion.  Additional and natural gravity 
2
 10r (181v)   Centre of area of a triangle (1): centre of gravity 
2
 10v (181r)A   Impulse: timelessness and focusing of the blow (definition of performance) 
2
 10v (181r)B  *  Gravity in the water and in the air 
2
 10v (181r)C   Motion depends on shape and air resistance 
2
 10v (181r)D   Motion by force of a magnet 
2
 11r (180v)   Impact, jolt and force as accidental weight.  Exchange of heat by motion and difference in temperature 
2
 11v (180r)   Impact of solid bodies. Friction and shape 
2
 12r (179v)   Impact: distorting effect of blows with a hammer 
2
 12v (179r)   Impact: effect of a blow on wood, in air and on water 
2
 13r (178v)A   Impact: deformation 
2
 13r (178v)B  *  The conical shape of a flame and the round shape of a drop of mercury 
2
 13r (178v)C  *  Static moments on beam balances (2): virtual lever arm 
2
 13v (178r)A   Effect of impact and pressure.  Easier motion on roller than with wheel 
2
 13v (178r)B  *  Static moments on beam balances (3): definition 
2
 14r (177v)   Force of gravity to the centre of the earth machine depends on shape, weight and direction.  Equilibrium.  Compressed support 
2
 14v (177r)   Rolling: horizontal plane and inclined plane, centre line, friction 
2
 15r (176v)   Devices for easier motion and lifting of weights: balls, inclined plane, tackle, winch 
2
 15v (176r)   Friction and weight, active and passive weight in the perpetual motion wheel.  * Pendulum pump 
2
 16r (175v)   Lifting equipment: replacing force by motion  Pulley, winch, inclined plane, screw 
2
 16v (175r)   Replacing Force by Motion.  Active and passive motions and weights 
2
 17r (174v)A   Impulse: distribution of momentum depends on the angle of reflection 
2
 17r (174v)B   Friction in winches.  YoYo effect 
2
 17v (174r)   Tensions in inclined ropes: attempts to deflect hanging weights laterally 
2
 18r (173v)   Impact and resonance in solid bodies; fly wheel; friction force; hoist.  Leonardo's working process 
2
 18v (173r)A   Moving weights on ropes with pulleys (1) 
2
 18v (173r)B  *  Tanning with grease 
2
 19r (172v)   Moving weights on ropes with pulleys (2) 
2
 19v (172r)A   Moving weights on ropes with pulleys (3) 
2
 19v (172r)B  °  Hinges with double joints 
2
 20r (171v)A   Moving weights on ropes with pulleys (4) 
2
 20r (171v)B  *  Multiplication rule 
2
 20v (171r)   Static moments on beam balances (4): considerations 
2
 21r (170v)   Static moments on beam balances (5): general formula 
2
 21v (170r)   Static moments on beam balances (6) 
2
 22r (169v)   Static moments on beam balances (7) 
2
 22v (169r)A   Winches of different angles (1): influence of thickness of rope 
2
 22v (169r)B  *  Distribution of pressure in an air bag 
2
 23r (168v)A   Winches of different angles (2) 
2
 23r (168v)B   Static moments on beam balances (8) 
2
 23v (168r)   Static moments on a beam (1) 
2
 24r (167v)   Static moments on a beam (2) 
2
 24v (167r)   Static moments on a beam (3) 
2
 25r (166v)   Statics of inclined supports 
2
 25v (166r)   Static moments on a beam (4) 
2
 26r (165v)   Static moments on beams and supports 
2
 26v (165r)   Distribution of pulling forces on the inner and outer threads of a curved cable (1) 
2
 27r (164v)   Distribution of pulling forces on the inner and outer threads of a curved cable (2).  Primacy of theory 
2
 27v (164r)A   Static moments on beam balances (9): centre of gravity in triangles 
2
 27v (164r)B  *  Grinding device compensating the wastage of friction 
2
 28r (163v)A   Static moments on beam balances (10): tensions in inclined ropes 
2
 28r (163v)B  *  Water driven grinding device for flat steel mirrors 
2
 28v (163r)A   Tensions in inclined ropes and rods with weights: Proportionality of weight und angle or weight and basis? 
2
 28v (163r)B   Winches of different angles (3) 
2
 29r (162v)   Static moments: loads of inclined supports and ropes 
2
 29v (162r)A   Static moments on beam balances (11): tensions in inclined ropes 
2
 29v (162r)B   Impulse: ratio of moments and weights 
2
 30r (161v)   Static moments on beam balances (12) 
2
 30v (161r)   Experiments on the inclined plane 
2
 31r (160v)   Weights on inclined planes and on balances.  Proportion of angle of fall and velocity 
2
 31v (160r)A   Torque change by oscillating weight 
2
 31v (160r)B   Raising tall and heavy blocks 
2
 31v (160r)C  *  Drum machine 
2
 32r (159v)A   Impulse and stroke 
2
 32r (159v)B   Tensions in inclined ropes with weights (1) 
2
 32r (159v)C  *  Painters' brushes 
2
 32v (159r)   Tensions in inclined ropes with weights (2) 
2
 33r (158v)   Tensions in inclined ropes with weights (3) 
2
 33v (158r)   Tensions in inclined ropes and rods 
2
 34r (157v)A  °  Clock: escapements 
2
 34r (157v)B   Transmission of power with rope and pulley, and by screw and gear or lazy tongs 
2
 34r (157v)C   Distribution of pulling forces on the inner and outer threads of a curved cable (3) 
2
 34v (157r)A   Static moments on beam balances (13): ratio of their weights and lever arms 
2
 34v (157r)B   Impulse: reflection of rolling and flying balls 
2
 34v (157r)C  °  Gear study 
2
 35r (156v)   Static moments on beam balances (14): computational method 
2
 35v (156r)   Static moments on beam balances (15): inability to determine the exact pivot of the beam 
2
 36r (155v)A   Load on supports and mounts 
2
 36r (155v)B   Load on a vertical rope, breaks by its own weight 
2
 36r (155v)C  *  Force direction and strength of force of a stretched bowstring 
2
 36v (155r)A   Load of rope and support by its own weight 
2
 36v (155r)B   Distribution of pulling forces on the inner and outer threads of a curved cable (4).  Block and tackle 
2
 37r (154v)   Distribution of pulling forces on the inner and outer threads of a curved cable (5): example wire cable 
2
 37v (154r)A  *  Crossbow: shooting backwards with a mirror; ballistic curve over an obstacle 
2
 37v (154r)B   Structural design: supports should be pushed rather than pulled 
2
 38r (153v)A   Centre of area of a triangle (2) 
2
 38r (153v)B   Ratchet (1): moments on a rattle 
2
 38r (153v)C   Best direction of force for men and horse 
2
 38v (153r)A   Centre of area of a triangle (3) 
2
 38v (153r)B   Direction of force when pulling a beam 
2
 39r (152v)A  °  Clock: shortened suspension of the weights by a tackle.  Oil in clockworks 
2
 39r (152v)B   Ratio of angle of force and resistance 
2
 39r (152v)C   Impulse: hammer blow on a stack 
2
 39v (152r)A   Relations between force, weight, distance and time 
2
 39v (152r)B   Hydrostatic pressure (1): depends on the depths of water 
2
 40r (151v)   Water power: Efficiency of mills in Lombardy 
2
 40v (151r)A   Perpetual motion wheel with paternoster, refuted by calculating its torques 
2
 40v (151r)B   Hydrostatic pressure (2): depends on the depths of water (Torricelli's theorem).  Heron's Fountain 
2
 41r (150v)   Hydrostatic pressure (3): refuting a perpetuum mobile 
2
 41v (150r)   Hydrostatic pressure (4): communicating vessels, measuring the pressure of water 
2
 42r (149v)A   Hydrostatic pressure (5): measuring the pressure of water 
2
 42r (149v)B   Balance of loads on ropes with pulleys 
2
 42r (149v)C   Proportionality of mass and impulse 
2
 42r (149v)D  °  Strength of cloth 
2
 42v (149r)A  °  Screw: rotatable mounting of a screw for lifting weights 
2
 42v (149r)B  °  Wedgeshaped pile tips. Compaction of the soil by wedges 
2
 43r (148v)A   Tensions and compressions in inclined ropes and rods 
2
 43r (148v)B   Hydrostatic pressure (6): uniform distribution of water pressure on the sides of a vessel 
2
 43v (148r)   Perpetual motion wheel with rockers, refuted by calculating its torques (1) 
2
 44r (147v)   Perpetual motion wheel with rockers, refuted by calculating its torques (2) 
2
 44v (147r)   Natural and accidental motion: pendulum and trajectory parabola 
2
 45r (146v)   Centres of solid bodies (1): centres shape and weight 
2
 45v (146r)A   Centres of solid bodies (2): centre of gravity 
2
 45v (146r)B  *  Hydrostatic pressure (7): measuring the pressure of water by weighing the load at the bottom of the tank0 
2
 46r (145v)A   Gravity and buoyancy in the classical elements, centres of heavy bodies 
2
 46r (145v)B   Oscillation: swinging rod on a twisted ribbon, yoyo 
2
 46r (145v)C  °  Clock: fly wheel escapement better with few wings 
2
 46v (145r)   Attempts to formulate definitions of weight and gravity (crossed out) 
2
 47r (144v)A   Gravity: attempts for a definition 
2
 47r (144v)B  *  Hydrostatic pressure (8): mercury balance 
2
 47v (144r)A   Power and weight: definition 
2
 47v (144r)B   Floating bridge and the forces of the river current (1) 
2
 48r (143v)A   Floating bridge and the forces of the river current (2) 
2
 48r (143v)B   Natural and accidental centre of gravity of a flying arrow 
2
 48v (143r)   Centre of gravity.  Statics of wall and arch 
2
 49r (142v)   Statics of a wall, an arch and a slanted beam 
2
 49v (142r)A   Water power: Impact and weight on an overshot vertical waterwheel 
2
 49v (142r)B  °  Pinion gear with eccentric or diagonal shafts 
2
 50r (141v)A   Hydrostatic pressure (9): in the deep ocean 
2
 50r (141v)B   Beam balances: survey 
2
 50v (141r)   Definition of torque (1): lateral thrust of vault, wall and pillar 
2
 51r (140v)   Definition of torque (2): erecting a pillar, effect of the keystone in the arch 
2
 51v (140r)A   Friction depends on the quality of the surface 
2
 51v (140r)B   Statics of beams 
2
 52r (139v)A   Statics of a circular arch 
2
 52r (139v)B   Friction depends on the angle of the plane 
2
 52v (139r)   Statics of pointed arches, deformation of beams.  Announcing a work on mathematics 
2
 53r (138v)   Torque conversion by lever and crescent cam, mast and gaff 
2
 53v (138r)A   Balances with variable lever arms and variable torque 
2
 53v (138r)B   Static moments on a beam 
2
 54r (137v)   Static moments on a beam 
2
 54v (137r)   Bending of elastic beams and arches (1) 
2
 55r (136v)   Bending of elastic beams and arches (2) 
2
 55v (136r)   Bending of elastic beams and arches (3) 
2
 56r (135v)   Bending of elastic beams and arches (4) 
2
 56v (135r)A   Bending of elastic beams and arches (5) 
2
 56v (135r)B   Hydrostatic pressure (10): measuring the pressure of water by weighing the load on the bottom of a galley bilge pump 
2
 56v (135r)C   Uniform load on the balance and the support 
2
 57r (134v)   Hydrostatic pressure (11): depends on depth (Torricelli's theorem). Measuring the performance of waterfalls by a water wheel with winch 
2
 57v (134r)   Static moments on beam balances (16): experiments to determine the centre of area 
2
 58r (133v)   Forces on balances and inclined ropes  evidence against Blasius Pelacani of Parma 
2
 58v (133r)A   Oscillating winch with flywheel 
2
 58v (133r)B  °  Curtain lifter in the Carmelite convent of Milan.  Bobbin winding machine (?) 
2
 59r (132v)A   Impulse: shock ball to ball. Impact of a drop on a water surface 
2
 59r (132v)B   Bearing: experiments on consumption of bearings 
2
 59v (132r)A   Types of motion (1): spiritual and material, original and derivative 
2
 59v (132r)B   Static moments on beam balances (17): sample calculations 
2
 59v (132r)C   Experiment: mixing of liquids, gases 
2
 60r (131v)   Types of motion (2): division of material motion 
2
 60v (131r)   Types of motion (3): impetus and reflection 
2
 61r (130v)   Static moments on a beam (5) 
2
 61v (130r)   Static moments on beam balances (18): supports 
2
 62r (129v)   Static moments on beam balances (19): rules for calculating the weights and lever arms 
2
 62v (129r)A   Static moments on beam balances (20) 
2
 62v (129r)B  °  Bearing for horizontal shaft (erased) 
2
 63r (128v)A   Flexural strength and its proportion to bending 
2
 63r (128v)B   Static moments on beam balances (21): hypothesis of their being triangular shaped 
2
 63v (128r)A   Torque calculation when tilting a triangle.  Centre of area of isosceles triangles according to the rule of the circumscribed and the circumscribing circles 
2
 63v (128r)B  °  Scissors 
2
 64r (127v)A   Centre of a triangle: rule of the third of the base 
2
 64r (127v)B  °  Armoured boat with paddle wheel 
2
 64v (127r)   Torques when setting up a rectangle 
2
 65r (126v)   Friction angle of bulk: waves as reactions to vibrations caused by shocks in a heap of powder 
2
 65v (126r)A   Impulse: hammer blow on a long lever arm 
2
 65v (126r)B  °  Moving heavy loads (2): block on a fourwheeled cart 
2
 66r (125v)  °  Moving heavy loads (1): on rollers, wheels and sledges 
2
 66v (125r)A   Impulse: strike and reflection 
2
 66v (125r)B   Pneumatics (1): communicating vessels and Heron's Fountain 
2
 66v (125r)C  *  Test apparatus for determining the strength of a man when flapping a large wing 
2
 67r (124v)A   Pneumatics (2): table fountain 
2
 67r (124v)B  °  Ratchet (2): driving of planetary gear 
2
 67v (124r)A   Axes of various forms 
2
 67v (124r)B  °  Ratchet (3): power transmission by ratchets or hinged teeth 
2
 67v (124r)C  °  Flywheel useless in a pump 
2
 68r (123v)A   Hydrostatic pressure (12): Archimedes' Law of Buoyancy 
2
 68r (123v)B  °  Ratchet (4): driving for rollers 
2
 68v (123r)  °  Rocking jack driving a winch 
2
 69r (122v)   Types of motion (4): spiritual and material, original and derivative 
2
 69v (122r)A   Types of motion (5): derived motion by multipart projectile 
2
 69v (122r)B   Friction in a wheel: spoke acts as a lever arm 
2
 70r (121v)   Friction in the screw (2): measuring the force of a screw 
2
 70v (121r)   Friction in the screw (1): quality of the surface, leverage, measuring the force 
2
 71r (120v)  °  Gear studies (1): contact, size, form and material of the teeth 
2
 71v (120r)  °  Gear studies (2): determining the diameter of a gear tooth at a given size (module) 
2
 72r (119v)A  °  Gear studies (3): screw drives (worm drives) 
2
 72r (119v)B  °  Hollow grinders 
2
 72r (119v)C  °  Drill bit with diamond tip 
2
 72v (119r)  °  Bearing: reducing the consumption of shafts by lubrication, suitable material and balancing 
2
 73r (118v)  °  Gear studies (4): calculation of tooth size and recommendations for their design 
2
 73v (118r)  °  Bearing: properties of short and long shafts, soiling of bearings by lubrication 
2
 74r (117v)A  °  Gear studies (5): shape and interplay of the teeth in the gear train 
2
 74r (117v)B  °  Bearings: abrasion and lubrication 
2
 74v (117r)  °  Ratchet (5): invention of the Florentine detent wheel (ritenaculo) 
2
 75r (116v)  °  Ratchet (6): enhanced safety by three teeth simultaneously engaging 
2
 75v (116r)  °  Gear studies (6): transmission of force and points of contact of the teeth 
2
 76r (115v)  °  Clock: balance escapement 
2
 76v (115r)   Pneumatics (3): Heron's Fountain and another fountain 
2
 77r (114v)   Pneumatics (4): table fountain operated by weight; container under air pressure 
2
 77v (114r)A   Heavy elements tending towards the centre of their own sphere 
2
 77v (114r)B   Considerations on centrifugal force and on the relation between the moved and its mover 
2
 78r (113v)A   Hydrostatic pressure (13): siphon 
2
 78r (113v)B  °  Bearing: roller bearings for vertical shaft 
2
 78r (113v)C  *  Arcs (and Vault) of the Church of Santa Maria delle Grazie in Milan 
2
 78v (113r)   Impulse: impact force of dense bodies 
2
 79r (112v)   Impact: effect of shock on surfaces (agens and patiens) 
2
 79v (112r)A   Motion of body floating in water 
2
 79v (112r)B  °  Gear studies (7): sense of rotation of gears in a planetary gear 
2
 80r (111v)A  °  Crank with connecting rod: same function with gears 
2
 80r (111v)B  *  No sound under water. Why do musical instruments not sound under water? 
2
 80v (111r)  °  Tunnel survey (1): calculation of the advance from both sides with a leveling device 
2
 81r (110v)  °  Tunnel survey (2): calculating the length of the tunnel with auxiliary triangles 
2
 81v (110r)  °  Amphitheatre, two semicircular theatres joined together by means of a chain (by Pliny) 
2
 82r (109v)   Lever arms of pulleys and the suspended weights 
2
 82v (109r)   Static moments on beam balances (22): oblique pull  real and potential lever (a) 
2
 83r (108v)   Static moments on beam balances (23): oblique pull  real and potential lever (b) 
2
 83v (108r)   Static moments on beam balances (24): oblique pull  real and potential lever (c) 
2
 84r (107v)A   Weights on inclined ropes and on angular balance 
2
 84r (107v)B  °  Breaking tool 
2
 84v (107r)   Static moments on beam balances (25): oblique pull  real and potential lever (d) 
2
 85r (106v)   Static moments on beam balances (26): oblique pull  real and potential lever (e) 
2
 85v (106r)A  *  Theory of motion sentence 614: weight, force, resistance 
2
 85v (106r)B   Weights on ropes with pulleys 
2
 86r (105v)A   Weights on inclined ropes and on angular balance 
2
 86r (105v)B  *  Theory of motion sentence 15 
2
 86v (105r)A  °  Twisting machine: detail 
2
 86v (105r)B  °  Wedge press 
2
 87r (104v)  °  Twisting machine: components 
2
 87v (104r)  °  Twisting machine: draft with details 
2
 88r (103v)  °  Twisting machine: method of winding the silk threads evenly tensioned 
2
 88v (103r)  °  Bearings (6): roller bearings cascaded for infinitesimally reducing friction 
2
 89r (102v)  °  Bearings (5): roller bearings with conical rollers for vertical shafts; theory of consumption 
2
 89v (102r)  °  Bearings (4): roller bearings cascaded with cylindrical and conical rollers 
2
 90r (101v)  °  Bearings (3): ball bearings, tapered bearings, roller bearings for vertical shafts 
2
 90v (101r)A  °  Cam wheel: efficiency and angle of cam and lever 
2
 90v (101r)B  °  Bearings (2): friction bearings and roller bearings 
2
 91r (100v)  °  Bearings (1): hinges and bearings for transmissions 
2
 91v (100r)  °  Friction: consumption of a lantern gear in a mill; automatic lubrication of the shaft 
2
 92r (99v)  °  Locks and latches 
2
 92v (99r)A   Torque transmission: ropes looped around an arbour in different wrap angles with weights at their ends 
2
 92v (99r)B  °  Lock mechanism 
2
 93r (98v)A   Static moments on beam balances (27): independence of the shape of the arms 
2
 93r (98v)B  °  Locks and latches 
2
 93v (98r)   [This page is empty] 
2
 94r (97v)A   Friction: driving an arbour with a rope wound around it 
2
 94r (97v)B  °  Gear studies (8): arrangement and ratio of gears in transmission 
2
 94v (97r)  °  Treadmill: higher efficiency when driven externally 
2
 95r (96v)  °  Door hinges (for pavilions in Vigevano?) 
2
 95v (96r)A  °  Bevel gearing 
2
 95v (96r)B  °  Release mechanism 
2
 95v (96r)C  °  Double hoist (on a quay wall) 
  

   a) End Leaf of part 1

3a  0rA  *  Wax and oil for a template 
3a  0rB  *  Definition of line and plane 
3a  0rC  *  Perpetual motion wheel: criticising the search for the rota perpetua 
3a  0rD  *  Calculations for a canon with the terrestrial globe as projectile 
3a  0rE  *  Recommendations for sculptors 
3a  0vA   Control mechanism for alternating linear motion (curve sliding transmission) 
3a  0vB  *  Motion of a short piston in a tube 
3a  0vC  *  About creating the figure 
3a  0vD  *  Book title 
3a  0vE  *  Birthday of the Lute Player Tadeo, Son of Nicolaio del Turco, on 09/28/1497 
   b) End Leaf of part 2

3b  0v (191r)A  *  Mnemonics on gravity 
3b  0v (191r)B  *  Press for preparing and shaping pastels 
3b  0r (191v)A  *  Signature of the volume 
3b  0r (191v)B  *  Preparing varnish 
3b  0r (191v)C  *  Patterns in various colours applied to cloth 
3b  0r (191v)D  *  Washing brushes 
3b  0r (191v)E  *  Recipe for canvas primer 
3b  0r (191v)F  *  Proportions according to Boethius and Pythagoras 
3b  0r (191v)G  *  Mysterious prophecy 
  

4a  Av   Library signatures 
4a  Bv   Manuscript number 
4a  Dr   Library title: Tratado de Estatica y Mechanica En Italiano 