This science ClipArt gallery offers 84 illustrations of a simple machine, screws. Screws are made of a coninuous inclined plane (threads) on a surface, and is used to convert force from rotational to linear, or linear to rotational. The ratio of threads determines the mechanical advantage.
Archime' dean Screw
A cylinder with a triple threaded screw in a water tight case that revolves ater to the top for the…
Archimedean Screw
Archimedean screw, gravity principle. Illustration of an unsuccessful scheme for a perpetual-motion…
Archimedean Screw
"A device for raising water, said to have been invented by Archimedes."-Whitney, 1902
Archimedes Screw
"A machine for raising water, said to have been invented by Archimedes, during his stay in Egypt for…
Archimedes' Screw
A machine used for lifting water, thought to have been invented by Archimedes in egypt for draining…
Archimedes' Screw
"Invented to raise water. A hollow tube wound spirally around a solid cylinder. As the cylinder is turned,…
Archimedes' Water Screw
"It consists of a tube, made of lead, or strong leather, coiled round a cylinder of wood or iron, as…
Lathe Attachment Turning Astragals
An astragal attachment for a hand crank lathe. Astragals are used to create mouldings with a raised…
Auger
An auger is a device for moving material or liquid (see Archimedes' screw) by means of a rotating helical…
!["[Left] Cook's Auger; [Right] Expanding Auger."-Whitney, 1902.](https://etc.usf.edu/clipart/15600/15601/augers_15601_mth.gif){kind=small}
Auger Bit
Common boring tool used with a bit brace. The cutting end has a tapered lead screw, two cutters, and…
Carriage Bolt
Carriage bolt is a fastener with a round head with a square head, and tightened by using a nut and wrench.…
Expansion Bolt
Expansion bolt is used to fasten lightweight objects. The bolt has an expansion jacket, where the mechanism…
Eye Bolt
Eye bolt has a looped end with threads at the opposite end. The bolt is primarily used in attaching…
Hanger Bolt
Hanger bolt is a fastener used in wood working with two different sized threads and some have no center…
Hex Bolt
A hex bolt used in carpentry is identified by its hexagonal head and (shown here) fully threaded.
Hex Head Bolt
The hex head bolt and nut illustrated and head, diameter, pitch, and lenght identified.
Spiraling Conveyer Belt
A mechanical apparatus consisting of a continuous moving belt that transports materials or packages…
Endless Screw
"The threads of the screw act upon the teeth cut into the wheel. As the screw turns, each thread catches…
Hunter's Screw
"Under intense pressure, the smaller threads on the screw may break. Therefore a larger screw with a…
Simple Machine
A screw is a cylinder with a groove wrapped helically around its circumference. The groove is called…
Nut Fixed Screw
"The nut, N, through which the screw passes, answers also for one of the beams of the press. If the…
Wing Nut
Wing nut is a fastener with a threaded hole used to keep objects in place. Wing nut can be loosen or…
Bookbinder Press
"When force is applied at bar P which turns the screw. The plate B moves vertically with the screw,…
Using a Screw to Raise Weight
"A screw is a cylinder with a helical proection winding around its circumference. This helix is called…
Spiral Roller
A rolling pair of cylinders which metal is passed through to form bars, plates, or sheets.
Screw
"The screw may be considered as a winding wedge; for it has the same relation to a straight wedge that…
Screw
"The screw is the sixth and last simple mechanical power. It may be consdered as a modification of the…
Screw
"Cylinder with a spiral of winding parallel ridges called Threads. If the Threads were unwound from…
Screw
The screw is the case of the inclined plane, with the length of one convolution of the thread being…
Screw and Nut
"Power is applied to the head of the screw. Each time the screw is turned into the nut, it advances…
Screw and Wheel
"It is apparent by turning the crank, C, the wheel will revolve, for the thread of the screw passes…
Screw Fixed Screw
"In this, the screw is fixed, while the nut, N, by being turned by the lever, L, from right to left,…
Screw press
"A screw is a cylinder, generally made of wood or metal, with a spiral ridge (the thread) winding about…