The Pulleys ClipArt gallery offers 82 illustrations. Pulleys use ropes, cables, or belts along with grooved wheels to change the direction of an applied force or to increase mechanical force in a linear or rotational system.

"This is done in the mechanism of the watch, of which a, is the barrel containing the power in the form of a convoluted spring, and b the fusee which acts as a varying lever, and through which motion is conveyed to the hands of the watch." -Comstock 1850

Barrel and Fusee

"This is done in the mechanism of the watch, of which a, is the barrel containing the power in the form…

"A Block is a pulley or a system of pulleys rotating on a pintle mounted in its frame or shell with its band and strap. There are many kinds of blocks, as a pulley block, a fiddle block, a fish block, a fly block, a heart block, a hook block, etc. A block and tackle is the block and the rope rove through it, for hoisting or obtaining a purchase."—(Charles Leonard-Stuart, 1911)

Block and Tackle

"A Block is a pulley or a system of pulleys rotating on a pintle mounted in its frame or shell with…

"Combinations of pulleys are made in great variety. In the forms most commonly used, one continuous cord passes around all the pulleys. Frequently two or more sheaves are mounted in the same block and turn on the same axis, as in the common block and tackle." — Avery, 1895

Block and tackle

"Combinations of pulleys are made in great variety. In the forms most commonly used, one continuous…

"A combination of fixed and immovable pulleys, employed to secure what engineers call a large 'mechanical edge.'"

Block and tackle

"A combination of fixed and immovable pulleys, employed to secure what engineers call a large 'mechanical…

"If the number of ropes be increased, the weight may be increased with the same power; or the power may be diminished in proportion as the number of ropes is incrased." -Comstock 1850

Compound Pulley

"If the number of ropes be increased, the weight may be increased with the same power; or the power…

"...there is a system of pulleys represented, in which the weight is sixteen times the power." -Comstock 1850

Compound Pulley

"...there is a system of pulleys represented, in which the weight is sixteen times the power." -Comstock…

"Compound pulleys using one fixed and two moveable pulleys to pull a weight up by applying a downward force." -Avery 1895

Compound Pulley

"Compound pulleys using one fixed and two moveable pulleys to pull a weight up by applying a downward…

"Compound pulley designed to use very little power to lift heavy weights." -Avery 1895

Compound Pulley

"Compound pulley designed to use very little power to lift heavy weights." -Avery 1895

A small crane used for lifting.

Crane

A small crane used for lifting.

Lifts and moves heavy objects; lifting tackle is suspended from a pivoted boom that rotates around a vertical axis.

Construction Crane

Lifts and moves heavy objects; lifting tackle is suspended from a pivoted boom that rotates around a…

The Fairbairn steam crane is a type of harbourside crane of an 'improved design', patented in 1850 by Sir William Fairbairn. The crane's innovation was in the use of a curved jib, made of riveted wrought iron platework to form a square-section box girder. This could reach further into the hold of a ship, clear of the deep gunwales alongside the quay. A typical size for these cranes would be able to lift 35 tons at a radius of 35 feet (11 m). They were powered by self-contained steam engines, with both boiler and engine mounted on-board the crane.

Fairbairn Steam Crane

The Fairbairn steam crane is a type of harbourside crane of an 'improved design', patented in 1850 by…

An illustration of a fixed hand revolving jib crane. A jib crane is a type of crane where a horizontal member (jib or boom), supporting a moveable hoist, is fixed to a wall or to a floor-mounted pillar. Jib cranes are used in industrial premises and on military vehicles. The jib may swing through an arc, to give additional lateral movement, or be fixed. Similar cranes, often known simply as hoists, were fitted on the top floor of warehouse buildings to enable goods to be lifted to all floors.

Fixed Hand Revolving Jib Crane

An illustration of a fixed hand revolving jib crane. A jib crane is a type of crane where a horizontal…

The "hammerhead", or giant cantilever, crane is a fixed-jib crane consisting of a steel-braced tower on which revolves a large, horizontal, double cantilever; the forward part of this cantilever or jib carries the lifting trolley, the jib is extended backwards in order to form a support for the machinery and counter-balancing weight. In addition to the motions of lifting and revolving, there is provided a so-called "racking" motion, by which the lifting trolley, with the load suspended, can be moved in and out along the jib without altering the level of the load. Such horizontal movement of the load is a marked feature of later crane design. These cranes are generally constructed in large sizes, up to 350 tons.

Hammerhead Crane

The "hammerhead", or giant cantilever, crane is a fixed-jib crane consisting of a steel-braced tower…

A jib crane is a type of crane where a horizontal member (jib or boom), supporting a moveable hoist, is fixed to a wall or to a floor-mounted pillar. Jib cranes are used in industrial premises and on military vehicles. The jib may swing through an arc, to give additional lateral movement, or be fixed. Similar cranes, often known simply as hoists, were fitted on the top floor of warehouse buildings to enable goods to be lifted to all floors.

Jib Crane

A jib crane is a type of crane where a horizontal member (jib or boom), supporting a moveable hoist,…

A crane is a lifting machine, generally equipped with a winder, wire ropes or chains and sheaves, that can be used both to lift and lower materials and to move them horizontally. It uses one or more simple machines to create mechanical advantage and thus move loads beyond the normal capability of a human. Cranes are commonly employed in the transport industry for the loading and unloading of freight, in the construction industry for the movement of materials and in the manufacturing industry for the assembling of heavy equipment.

Crane for Lifting Cars

A crane is a lifting machine, generally equipped with a winder, wire ropes or chains and sheaves, that…

An illustration of a portable jib crane. A jib crane is a type of crane where a horizontal member (jib or boom), supporting a moveable hoist, is fixed to a wall or to a floor-mounted pillar. Jib cranes are used in industrial premises and on military vehicles. The jib may swing through an arc, to give additional lateral movement, or be fixed. Similar cranes, often known simply as hoists, were fitted on the top floor of warehouse buildings to enable goods to be lifted to all floors.

Portable Jib Crane

An illustration of a portable jib crane. A jib crane is a type of crane where a horizontal member (jib…

The titan crane refers to an extremely large cantilever crane.

Titan Crane

The titan crane refers to an extremely large cantilever crane.

A pulley with a convex rim, much used where various cases belts are in danger of slipping off.

Crown Pulley

A pulley with a convex rim, much used where various cases belts are in danger of slipping off.

An illustration of a derrick which is a lifting device made up of one pole which moves in all four directions between four lines.

Derrick

An illustration of a derrick which is a lifting device made up of one pole which moves in all four directions…

Device that is used for lifting and moving large objects; A framework that is constructed over a mine or oil well for the purpose of boring or lowering pipes

Industrial Derrick

Device that is used for lifting and moving large objects; A framework that is constructed over a mine…

"In the differential pulley, an endless chain is reeved upon a solid wheel that has two grooved rims and is carried in a fixed block above, and upon a pulley below." — Avery, 1895

Differential Pulley

"In the differential pulley, an endless chain is reeved upon a solid wheel that has two grooved rims…

"A moveable pulley is seldom used alone. It is generally combined with a fixed pulley, as shown [here]." —Quackenbos 1859

Fixed and Moveable Pulley

"A moveable pulley is seldom used alone. It is generally combined with a fixed pulley, as shown [here]."…

"A pulley is a wheel having a grooved rim for carrying a rope or other line, and tuning on an axis carried in a frame, called a pulley block. The pulley is fixed if the block is stationary." — Avery, 1895

Fixed Pulley

"A pulley is a wheel having a grooved rim for carrying a rope or other line, and tuning on an axis carried…

"A fixed pulley is one whose block is not movable. In this case, if the weight W be lifted by pulling down P, the other end of the cord W will evidently move the same distance upwards that P moves downwards; hence, P must equal W." — Hallock, 1905

Fixed Pulley

"A fixed pulley is one whose block is not movable. In this case, if the weight W be lifted by pulling…

"[This illustration] represents a fixed pulley. The block is attached to a projecting beam. P is the power, and W the weight. For every inch that P descends, W ascends the same distance." —Quackenbos 1859

Fixed Pulley

"[This illustration] represents a fixed pulley. The block is attached to a projecting beam. P is the…

A pulley with a sheave having its perimeter a rectangular or nearly rectangular groove. Used for transmitting power by ropes or bands.

Flat Rope Pulley

A pulley with a sheave having its perimeter a rectangular or nearly rectangular groove. Used for transmitting…

"In machinery, a form of slip-coupling applied in cases where the variations of load are sudden and great, as in dredging-machinery, etc. In the form illustrated a strong pulley, B, is keyed on the driving-shaft, and on the circumference of this wheel, A, is fitted, with a series of friction-plates, a, a, a, interposed, and retained in recesses formed in the eye of the wheel." -Whitney, 1911

Friction Wheel

"In machinery, a form of slip-coupling applied in cases where the variations of load are sudden and…

"A key is used to turn the cone, B. By doing so it wraps the chain around the cone and tightly coils the spring inside the barrel, A. The spring draws the chain off of the cone turning the barrel." —Quackenbos 1859

The Fusee

"A key is used to turn the cone, B. By doing so it wraps the chain around the cone and tightly coils…

"GIN-BLOCK. A simple form of tackle-block with a single wheel, over which a rope runs. It has a hook by which it swings from the jib of a crane or the sheer of a gin." -Whitney, 1911

Gin-Block

"GIN-BLOCK. A simple form of tackle-block with a single wheel, over which a rope runs. It has a hook…

A fixed pulley. It is called such because the block is attached to the ceiling and cannot move.

Simple Machine

A fixed pulley. It is called such because the block is attached to the ceiling and cannot move.

A moveable pulley. What differs between a moveable pulley and a fixed pulley is the fact that a moveable pulley, as its name entails, has a moveable block.

Simple Machine

A moveable pulley. What differs between a moveable pulley and a fixed pulley is the fact that a moveable…

A complex moveable pulley. It consists of a fixed and moveable block.

Simple Machine

A complex moveable pulley. It consists of a fixed and moveable block.

A combination of pulleys. P is power exerted on the rope and W is the weight.

Simple Machine

A combination of pulleys. P is power exerted on the rope and W is the weight.

"A pulley is a wheel having a grooved rim for carrying a rope or other line, and turning on an axis carried in a frame, called a pulley block. The pulley is movable if the block moves during the action of the power." — Avery, 1895

Movable pulley

"A pulley is a wheel having a grooved rim for carrying a rope or other line, and turning on an axis…

"A movable pulley is one whos block is movable. One end of the cord is fastened to the beam, and the weight is sspended from the pulley, the other end of the cord being drawn by the application of a force P. A little consideration will show that if P moves through a certain distance, say 1 foot, W will move through half that distance, or 6 inches; hence, a pull of 1 pound at P will life 2 pounds at W." — Hallock, 1905

Movable Pulley

"A movable pulley is one whos block is movable. One end of the cord is fastened to the beam, and the…

"[This illustration] represents a moveable pulley. A is the wheel. One end of the rope is fastened to a support at D, while the power is applied to the other at P." —Quackenbos 1859

Moveable Pulley

"[This illustration] represents a moveable pulley. A is the wheel. One end of the rope is fastened to…

"System of moveable pulleys. Each pulley has a separate rope attached to a fixed support at one end." —Quackenbos 1859

Movable Pulleys

"System of moveable pulleys. Each pulley has a separate rope attached to a fixed support at one end."…

"When a high degree of force is required, several moveable pulleys may be combined, as represented [here]. A and B are fixed pulleys; C and D are moveable ones, from the block of which the weight W is suspended" —Quackenbos 1859

Multiple Pulleys

"When a high degree of force is required, several moveable pulleys may be combined, as represented [here].…

A man using a pulley to lift a heavy barrel.

Pulley

A man using a pulley to lift a heavy barrel.

A wheel for transmitting power from, or imparting it to the different parts of machinery, or for changing the direction of motion by means of a belt, cord, or rope.

Pulley

A wheel for transmitting power from, or imparting it to the different parts of machinery, or for changing…

"A pulley is a grooved wheel, around which a rope is passed, and is either fixed or moveable." — Goodrich, 1844

Pulley

"A pulley is a grooved wheel, around which a rope is passed, and is either fixed or moveable." —…

"The pulley is a lever with equal arms of the first or second class, but, when it moves. the attachments of the forces are moved. The underlying fact that enables the pulley to afford any mechanical advantage is the uniformity of the tension of the cord in all of its parts, the pulley itself serving only to diminish the friction." — Avery, 1895

Pulley

"The pulley is a lever with equal arms of the first or second class, but, when it moves. the attachments…

One of the six simple machines or mechanical powers. It consists of a grooved wheel mounted in a block, and is used to increase power and transmit it, by means of a rope or flexible cord, in a changed direction.

Pulley

One of the six simple machines or mechanical powers. It consists of a grooved wheel mounted in a block,…

"[The pulley] consists of a wheel with a grooved circumference, over which a rope passes, and an axis or pin, round which the wheel may be made to turn. A represents the block, B the axis, C the wheel." —Quackenbos 1859

Pulley

"[The pulley] consists of a wheel with a grooved circumference, over which a rope passes, and an axis…

"A small wheel turning upon an axis." -Foster, 1921

Pulley

"A small wheel turning upon an axis." -Foster, 1921

"In the single fixed pulley (fig. 1) there is no mechanical advantage, the power and weight being equal. It may be considered as a lever of the first kind with equal arms. In the single movable pulley (fig. 2) where the cords are parallel there is a mechanical advantage, there being an equilibrium when the power is considered as a lever of the second kind, in which the distance of the power from the fulcrum is double hat of the weight from the fulcrum." -Marshall

Pulley

"In the single fixed pulley (fig. 1) there is no mechanical advantage, the power and weight being equal.…

"In a system of pulleys (figs. 3,4) in which the same string passes round any number of pulleys, and the parts of it between the pulleys are parallel, there is an equilibrium when the power is to the weight as 1 to the number of strings at the lower block" -Marshall

Pulley

"In a system of pulleys (figs. 3,4) in which the same string passes round any number of pulleys, and…

"In a system in which each pulley hangs by a separate cord and the strings are parallel (fig. 5), there is an equilibrium when the power is to the weight as 11 to that power of 2 whose index is the number of movable pulleys." -Marshall

Pulley

"In a system in which each pulley hangs by a separate cord and the strings are parallel (fig. 5), there…

A pulley (also called a block) is a mechanism composed of a wheel (called a sheave) with a groove between two flanges around the wheel's circumference. A rope, cable or belt usually runs inside the groove. Pulleys are used to change the direction of an applied force, transmit rotational motion, or realize a mechanical advantage in either a linear or rotational system of motion.

Pulley

A pulley (also called a block) is a mechanism composed of a wheel (called a sheave) with a groove between…

A pulley (also called a block) is a mechanism composed of a wheel (called a sheave) with a groove between two flanges around the wheel's circumference. A rope, cable or belt usually runs inside the groove. Pulleys are used to change the direction of an applied force, transmit rotational motion, or realize a mechanical advantage in either a linear or rotational system of motion.

Pulley

A pulley (also called a block) is a mechanism composed of a wheel (called a sheave) with a groove between…

A pulley, also called a sheave or a drum, is a mechanism composed of a wheel on an axle or shaft that may have a groove between two flanges around its circumference. A rope, cable, belt, or chain usually runs over the wheel and inside the groove, if present. Pulleys are used to change the direction of an applied force, transmit rotational motion, or realize a mechanical advantage in either a linear or rotational system of motion. Two or more pulleys together are called a block and tackle.

Pulley

A pulley, also called a sheave or a drum, is a mechanism composed of a wheel on an axle or shaft that…

A flat or slightly crown faced pulley.

Band Pulley

A flat or slightly crown faced pulley.

An illustration of a block pulley. A pulley (also called a block) is a mechanism composed of a wheel (called a sheave) with a groove between two flanges around the wheel's circumference. A rope, cable or belt usually runs inside the groove. Pulleys are used to change the direction of an applied force, transmit rotational motion, or realize a mechanical advantage in either a linear or rotational system of motion.

Pulley Blocks

An illustration of a block pulley. A pulley (also called a block) is a mechanism composed of a wheel…

An illustration of a block pulley. A pulley (also called a block) is a mechanism composed of a wheel (called a sheave) with a groove between two flanges around the wheel's circumference. A rope, cable or belt usually runs inside the groove. Pulleys are used to change the direction of an applied force, transmit rotational motion, or realize a mechanical advantage in either a linear or rotational system of motion.

Pulley Blocks

An illustration of a block pulley. A pulley (also called a block) is a mechanism composed of a wheel…

An illustration of a block pulley. A pulley (also called a block) is a mechanism composed of a wheel (called a sheave) with a groove between two flanges around the wheel's circumference. A rope, cable or belt usually runs inside the groove. Pulleys are used to change the direction of an applied force, transmit rotational motion, or realize a mechanical advantage in either a linear or rotational system of motion.

Pulley Blocks

An illustration of a block pulley. A pulley (also called a block) is a mechanism composed of a wheel…

A system of pulleys used to lift an object.

Pulley System

A system of pulleys used to lift an object.

A system of pulleys used to lift an object.

Pulley System

A system of pulleys used to lift an object.

A system of pulleys used to lift an object.

Pulley System

A system of pulleys used to lift an object.

A system of pulleys used to lift an object.

Pulley System

A system of pulleys used to lift an object.

A system of pulleys used to lift an object.

Pulley System

A system of pulleys used to lift an object.