### Applied Mechanics

An example of a pulley system.

### Atwood's Machine

Atwood's machine illustrates the effects of force in producing motion.

### Block and Tackle

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

### Block and tackle

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

### Block and tackle

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

### Compound Pulley

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

### Compound Pulley

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

### Compound Pulley

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

### Compound Pulley

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

### Differential Pulley

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

### Dumb Waiter

An illustration of a dumb waiter which is a moveable frame in a shaft which is suspended by a rope on…

### Early Elevator

This medieval elevator shows the use of two simple machines: wheel and axle on the right, and a pulley…

### Exercise

Woman using pulleys.

### Exercise

Woman using pulleys.

### Exercise

Woman using pulleys.

### Fixed and Moveable Pulley

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

### Fixed Pulley

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

### Fixed Pulley

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

### Fixed Pulley

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

### Friction Wheel

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

### Gin-Block

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

### Safety Purpose Lifting Hook

A lifting hook is a device used for grabbing and lifting loads by means of a device such as a hoist…

### Lapidary's Mill

"Part of Lapidary's Mill. A, upper summer (cut through); B, lower summer (cut through); C, spindle;…

### First Kind of Lever

"In straight levers of the first kind, the fulcrum is between the power and the resistance, as in fig…

### Simple Machine

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

### Movable pulley

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

### Movable Pulley

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

### Moveable Pulley

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

### Movable Pulleys

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

### Multiple Pulleys

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

### Pulley

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

### Pulley

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

### Pulley

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

### Pulley

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

### Pulley

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

### Pulley

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

### Pulley

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

### Pulley

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

### Pulley

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

### Pulley Blocks

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

### Pulley Blocks

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

### Pulley Blocks

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

### Pulley Example

An example of a pulley system.

### Pulley System

"A horse without machinery can not lift a weight; but he does it readily with the aid of the simple…

### Pulley System

A pulley, when fixed in such a way that it can only turn about a fixed axis, confers no mechanical advantage.

### Pulley System

This pulley arrangement gives a mechanical advantage of 2; for the lower, movable pulley may be regarded…

### Pulley System

This figure has six pulleys and one cord passes round them all. Each pulley is stretched with the same…

### Pulley System

This arrangement have three movable pulleys, each hanging by a separate cord. The mechanical advantage…

### Chucking Pulley

Chucking pulley with flat drill.

### Compound Pulley

"Many wheels may be combined together, and in many ways, to form compound pulleys. Whenever there is…

### Incline Plane Pulley

An illustration of an inclined plane pulley. "Let the weight w be started to move p the plane, and let…

### Loose Driving Pulley

"The belt is thrown on to set the machine in motion, the loose pulley is pressed aside by the spiral…

### Sash Pulley

A pulley is a mechanism of a wheel on an axle or shaft that may have a groove between two flanges around…

### Pulleys

"Pulleys designed to allow the weight to be pulled up while the power is applied downwards." -Avery…

### Pulleys - Smeaton's Blocks

"A system of pulleys in two blocks, so arranged that the parts of continuous rope are approximately…

### Grooved Pulleys

These pulleys are grooved such as to guide the inner belt, in this system there is less of a chance…

### Building the Pyramids

Egyptians using pulleys to build a pyramid.

### Detail of Wheeler and Wilson Sewing Machine

A detail of the Wheeler and Wilson Sewing Machine. "s, thread-leader; t, face-plate covering...; v,…

### Shafting

"In machinery, the system of shafts which connects machinery with the prime mover, and through which…

### Shoe Block

"Nautically, a block with two sheaves, whose axes are at right angles to each other, used for the buntlines…