The Machine Parts ClipArt gallery offers 194 illustrations of couplings, valves, escapements, pumps, governors, and more.

An automatic valve used to relief pressure.

Pop Valve

An automatic valve used to relief pressure.

An automatic valve used to relief pressure.

Pop Valve

An automatic valve used to relief pressure.

A type of valve in which the rotation of a passage or passages in a transverse plug regulates the flow of liquid or gas through the attached pipes. The common stopcock is the simplest form of rotary valve.

Rotary Valve

A type of valve in which the rotation of a passage or passages in a transverse plug regulates the flow…

This steam valve design features revolving cup valves which are able to cut off steam at any given revolution inside an engine.

Steam Valve

This steam valve design features revolving cup valves which are able to cut off steam at any given revolution…

"The amount that the valve overlaps the steam ports is called the lap of the valve. It will at once be seen that both the admission and exhaust ports may remain closed during a part of the stroke, thus making expansion and compression possible." —Derr, 1911

Slide Valve of Steam Engine

"The amount that the valve overlaps the steam ports is called the lap of the valve. It will at once…

Any of various devices that regulate the flow of gases, liquids, or loose materials through piping or through apertures by opening, closing, or obstructing ports or passageways.

Water Distribution Valve

Any of various devices that regulate the flow of gases, liquids, or loose materials through piping or…

This illustration shows a six cylinder motor and its many parts: Intake Manifold, Centrifugal Pump, Magneto, Carburetor, Spark Plug, Tractor Screw Shaft, Intake Valve, Exhaust, Exhaust Valve, Water Outlet.

Vertical Type Motor, Six Cylinder

This illustration shows a six cylinder motor and its many parts: Intake Manifold, Centrifugal Pump,…

Two vessels from the Thomas Savery first steam engine. The right tank fills up with water while the left fills up with steam to create a pressure in the vessel. At certain pressure, the lever lets cools the right vessel by pumping the water out of it.

Two Vessels from Thomas Savery First Steam Engine

Two vessels from the Thomas Savery first steam engine. The right tank fills up with water while the…

"Volumetric Governor (Peebles)." — Encyclopedia Britannica, 1893

Volumetric

"Volumetric Governor (Peebles)." — Encyclopedia Britannica, 1893

To join multiple metals by applying heat, sometimes with pressure or with an intermediate or filler metal having a high melting point.

Process of Welding Metal

To join multiple metals by applying heat, sometimes with pressure or with an intermediate or filler…

A wheel with pointed and anglar teeth, against which a ratchet abuts, used either for converting a reciprocating into a rotary motion or for admitting motion in one direction only.

Ratchet Wheel

A wheel with pointed and anglar teeth, against which a ratchet abuts, used either for converting a reciprocating…

A wheel with pointed and angular teeth, against which a ratchet abuts, used either for converting a reciprocating into a rotatory motion on the shaft to which it is fixed, or for admitting of circular motion in one direction only, as in a winch.

Ratchet Wheel

A wheel with pointed and angular teeth, against which a ratchet abuts, used either for converting a…

"Drawing showing completed 50-foot diameter sand or tailings wheel." -Meese, 1913

Tailings Wheel

"Drawing showing completed 50-foot diameter sand or tailings wheel." -Meese, 1913

An illustration of creating a hand wheel by spinning while moving threaded tool to the desired radius.

Turning Hand Wheels

An illustration of creating a hand wheel by spinning while moving threaded tool to the desired radius.