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

A portable engine used for small machines.

Engine

A portable engine used for small machines.

A machine that converts energy into mechanical force or motion.

Explosion Engine

A machine that converts energy into mechanical force or motion.

Escapement is a mechanical device intervening between the power and the time-measurer of a clock or watch, and whose purpose is to secure uniformity in the rate of movement.

Escapement

Escapement is a mechanical device intervening between the power and the time-measurer of a clock or…

"A crank which regulates the motion of the chief or escapement wheel of a train of clock-work worked by the pendulum or spring." — Williams, 1889

Escapement

"A crank which regulates the motion of the chief or escapement wheel of a train of clock-work worked…

The contrivance in a time-piece which connects the wheel-work with the pendulum or the balance, giving to the latter the impulse by which it is kept in vibration.

Escapement

The contrivance in a time-piece which connects the wheel-work with the pendulum or the balance, giving…

A faucet of which the valve is secured to its seat by a spring to prevent the passage of the liquid, a lever lifting it when the liquid is to be drawn off.

Self Closing Faucet

A faucet of which the valve is secured to its seat by a spring to prevent the passage of the liquid,…

A regulator for controlling the flow of a liquid from a reservoir

Standard Use Faucet

A regulator for controlling the flow of a liquid from a reservoir

A device for regulating the flow of a liquid from a reservoir such as a pipe or drum. See Regional Note at andiron.

Plumbing Fixture

A device for regulating the flow of a liquid from a reservoir such as a pipe or drum. See Regional Note…

The hydraulic brake is an arrangement of braking mechanism which uses brake fluid, typically containing ethylene glycol, to transfer pressure from the controlling unit, which is usually near the operator of the vehicle, to the actual brake mechanism, which is usually at or near the wheel of the vehicle. Within a hydraulic brake system, as the brake pedal is pressed/ brake lever is squeezed, a push rod exerts force on the piston(s) in the master cylinder causing fluid from the brake fluid reservoir to flow into a pressure chamber through a compensating port which results in an increase in the pressure of the entire hydraulic system. This forces fluid through the hydraulic lines toward one or more calipers where it acts upon one or two additional caliper pistons secured by one or more seated O-rings which prevent the escape of any fluid from around the piston.

Fluid Pressure Brake Apparatus

The hydraulic brake is an arrangement of braking mechanism which uses brake fluid, typically containing…

An example of the turning tendency of force.

Force

An example of the turning tendency of force.

"The operation of the force-pump is similar to that of the suction-pump. The outlet-valve generally opens from the cylinder, the piston being made solid." — Avery, 1895

Force pump

"The operation of the force-pump is similar to that of the suction-pump. The outlet-valve generally…

A kind of pump used to throw water to a distance, or to force it onward by the direct action of the piston.

Forcing-pump

A kind of pump used to throw water to a distance, or to force it onward by the direct action of the…

A Frue Vanner is a shaking, rubber belt used to concentrate gold ore 'pulp'.

Frue Vanner (End View)

A Frue Vanner is a shaking, rubber belt used to concentrate gold ore 'pulp'.

A Frue Vanner is a shaking, rubber belt used to concentrate gold ore 'pulp'.

Frue Vanner (Side View)

A Frue Vanner is a shaking, rubber belt used to concentrate gold ore 'pulp'.

"Every retort is furnished with a seperate mouthpiece, usually of cast iron, with a socket b for receiving the stand-pipe or ascension-pipe, and there is a movable lid attached to the mouth, together with an ear-box cast on each side of the retort for receiving the ears which support the lid." — Encyclopedia Britannica, 1893

Gas Cover

"Every retort is furnished with a seperate mouthpiece, usually of cast iron, with a socket b for receiving…

That part of a gas fixture where the gas is burned as it escapes from one or more minute orifices.

Gas-burner

That part of a gas fixture where the gas is burned as it escapes from one or more minute orifices.

An instrument for measuring or testing.

Instrument Panel Gauge

An instrument for measuring or testing.

Mechanism that connects the coupler to the frame of the car. In model railroading, the coupler mounting box is often so-named.

Draft Gear

Mechanism that connects the coupler to the frame of the car. In model railroading, the coupler mounting…

A Joy valve gear for steam engine rotating the wheel in the direction of the arrow. The lever F changes the direction the wheel would turn when turned to point B.

Joy Steam Engine Valve Gear Rotating Wheel

A Joy valve gear for steam engine rotating the wheel in the direction of the arrow. The lever F changes…

An outline of the Marshall gear from a steam engine. The piston rotates the crank shaft at point H around axis S. The rod F is connected to the bottom rod E. Rod F rotates at axis P to rotate the engine backwards and forward.

Outline of a Steam Engine Marshall Gear Reducing Friction and Wear

An outline of the Marshall gear from a steam engine. The piston rotates the crank shaft at point H around…

Equipped with or connected by gears or having gears engaged

Mechanical Gearing

Equipped with or connected by gears or having gears engaged

"The main valve controls admission, release, and compression; the other (valve) regulates the cut—off only, which may be changed without in any way affecting the other events of the stroke. This cut—off valve may be placed in a separate valve chest, or it may be placed in the back of the main valve." —Derr, 1911

Close up View of Double Sliding Valve Gears from Steam Engine

"The main valve controls admission, release, and compression; the other (valve) regulates the cut—off…

This illustration shows a Gnome motor with revolving cylinders and its many parts: Spark Plug; Conducting Wire from Collector Ring; Distributor Brush from Magneto; Electric Collector Ring; Fixed, Hollow Crankshaft; Connecting Rod; Piston; Revolving Crankcase; Tappet Cams (male and female); Exhaust Valve Tappet; Exhaust Valve; Intake Valve; Air-Cooled Cylinder. Gnome was the leading type of air cooled motor in the 1920s.

Gnome Motor, with Revolving Cylinders

This illustration shows a Gnome motor with revolving cylinders and its many parts: Spark Plug; Conducting…

Governor, used for regulating output of steam engines.

Governor

Governor, used for regulating output of steam engines.

A contrivance connected with mills, steam-engines, or other machinery, for maintaining uniform velocity with a varying resistance.

Governor

A contrivance connected with mills, steam-engines, or other machinery, for maintaining uniform velocity…

"Diagrammatic section of the common form of a station governor." — Encyclopedia Britannica, 1893

Governor

"Diagrammatic section of the common form of a station governor." — Encyclopedia Britannica, 1893

"Sugg's Consumers' Governor" — Encyclopedia Britannica, 1893

Governor

"Sugg's Consumers' Governor" — Encyclopedia Britannica, 1893

"Consumers' Governor (Peebles)." — Encyclopedia Britannica, 1893

Governor

"Consumers' Governor (Peebles)." — Encyclopedia Britannica, 1893

"Of all the contrivances for regulating the motion of machinery, this is said to be the most effectual. It will be readily understood by the following description. It consists of two heavy iron balls b, attached to the extremities of the two rods, b, e. These rods play on a joint at e, passing through a mortice in the vertical stem d, d. At f, these pieces are united, by joints to two short rods, f, h, which, at their upper ends, are again connected by joints at h, to a ring which slides upon the vertical stem d d." —Comstock, 1850

Governor

"Of all the contrivances for regulating the motion of machinery, this is said to be the most effectual.…

A spindle governor where both balls are connected to the base. The governor is used to regulate the amount of fuel of the steam engine. As the governor spins, the diameter of the circle increases.

Governor with the Balls Connected to the Base for Steam Engine

A spindle governor where both balls are connected to the base. The governor is used to regulate the…

"A wheel which contains and supports the various parts of the governor is keyed to the shaft. Two arms, having weights A A at the ends, are pivoted to the arms of the wheel at b b. The ends having the weights are connected to the collar on the loose eccentric C by means of rods B B." —Derr, 1911

Buckeye Engine Governor

"A wheel which contains and supports the various parts of the governor is keyed to the shaft. Two arms,…

"Governor of a Steam-engine. GOVERNOR. In machinery, a self-acting regulator which controls a supply of steam, gas, or water; especially, any device for automatically regulating the amount of power developed in a machine, as in a steam-engine." -Whitney, 1911

Electric Governor

"Governor of a Steam-engine. GOVERNOR. In machinery, a self-acting regulator which controls a supply…

"All fly—wheel governors operate by shifting the eccentric either to change the angular advance, the travel of the valve, or both. The principle of a governor arranged to give decreasing lead under the head of governors." —Derr, 1911

Top View of the Fly Wheel Governor Turning Clockwise

"All fly—wheel governors operate by shifting the eccentric either to change the angular advance,…

"Porter's governor, a modification of Watt's original model."—Finley, 1917

Porter's governor

"Porter's governor, a modification of Watt's original model."—Finley, 1917

"This type of governor is used frequently on throttling engines; it consists of a pendulum governor with springs added to counteract the centrifugal force of the balls. Thus the height and sensitiveness are increased." —Derr, 1911

Spring Governor for Steam Engines

"This type of governor is used frequently on throttling engines; it consists of a pendulum governor…

A straight line engine governor illustrating the direction of the ball (B) is going. The single ball is rotated around by spring S, spinning the wheel. The valve closes as the wheel spins.

Straight Line Engine Governor

A straight line engine governor illustrating the direction of the ball (B) is going. The single ball…

"In this goveror the weights are always in the same plane, the variation in height being due to the action o the bell crank levels connecting the balls and spindle. When the balls move outward the spindle moves downward and tends to close the valve." —Derr, 1911

Waters Spring Governor with Safety Stop

"In this goveror the weights are always in the same plane, the variation in height being due to the…

An exterior view of a waters spring governor. The governor is used to regulate fuel by closing and opening the valves. The valve is opened or closed by rotating the two heavy balls.

Exterior View of Waters Spring Governor

An exterior view of a waters spring governor. The governor is used to regulate fuel by closing and opening…

Three types of governors: a, Watt's; b, Pröll's; c, Spring. A governor is a device that maintains "a uniform velocity with a varying resistance." -Foster, 1921

Governors

Three types of governors: a, Watt's; b, Pröll's; c, Spring. A governor is a device that maintains…

"The sectional form of the guideblade chamber and the wheel and the curves of the wheel vanes and guideblades, when drawn on a plane development of the cylindrical section of the wheel; a, a, a are the sluices for cutting off the water; b, b, are apertures by which the entrance of exit of air is facilitated as the buckets empty and fill." — Encyclopedia Britannica, 1893

Guideblade Chamber

"The sectional form of the guideblade chamber and the wheel and the curves of the wheel vanes and guideblades,…

"The sectional form of the guideblade chamber and the wheel and the curves of the wheel vanes and guideblades, when drawn on a plane development of the cylindrical section of the wheel; a, a, a are the sluices for cutting off the water; b, b, are apertures by which the entrance of exit of air is facilitated as the buckets empty and fill." — Encyclopedia Britannica, 1893

Guideblade Chamber

"The sectional form of the guideblade chamber and the wheel and the curves of the wheel vanes and guideblades,…

"The click barrel-ratchet R is set upon another larger ratchet-wheel, with its teeth pointing the opposite way, and its click rT is set in the clock-frame. That ratchet is connected with the great wheel by a spring ss' pressing against the two pins s in the ratchet and s' in the wheel. When you wind up the weight, the click Tr prevents the ratchet from turning back or to the right; and as the spring ss' is kept by the weight in a state of tension equivalent to the weight itself it will drive the wheel to the left for a short distance, when its end s is held fast, with the same force as if that end was pulled forward by the weight; and as the great wheel has to move very little during the short time the clock is winding, the spring will keep the clock going long enough." — Encyclopedia Britanica, 1893

Harrison's Going-Ratchet

"The click barrel-ratchet R is set upon another larger ratchet-wheel, with its teeth pointing the opposite…

"Hero's Machine. The generation of steam from water by the application of heat, and the mechanical force produced by this means, appear to have been understood at a very remote period; but their application to machinery devoted to the purposes of locomotion, is a discovery of recent date. The ingenious contrivances of early discoverers were devoted to objects of minor importance, as those of raising water and propelling smoke upwards." —Comstock, 1850

Hero's Machine

"Hero's Machine. The generation of steam from water by the application of heat, and the mechanical force…

A jointed or flexible device that allows the turning or pivoting of a part, such as a door or lid, on a stationary frame.

Door Hinge

A jointed or flexible device that allows the turning or pivoting of a part, such as a door or lid, on…

This is a battery holder with two compartments for holding batteries in place.

Battery Holder

This is a battery holder with two compartments for holding batteries in place.

A device on an automobile for making a warning noise.

Automobile Horn

A device on an automobile for making a warning noise.

The central part of a car wheel (or fan or propeller etc) through which the shaft or axle passes

Wheel Hub

The central part of a car wheel (or fan or propeller etc) through which the shaft or axle passes

A passive electrical component that can store energy in a magnetic field created by the electric current passing through it. An inductor's ability to store magnetic energy is measured by its inductance, in units of henries.

Alternator Inductor

A passive electrical component that can store energy in a magnetic field created by the electric current…

A pivoted joint in the nature of a hinge joint, whereby two thin flat strips may be so united that each edge will turn edgewise towards and from eachother.

Prop Joint

A pivoted joint in the nature of a hinge joint, whereby two thin flat strips may be so united that each…

Fastening designed to unite abutting ends of rail.

Rail Joint

Fastening designed to unite abutting ends of rail.

"The upper edge of the shelf on which the weights slide is graduated into equal divisions, and the weight is provided with a sharp tongue of metal in order that its posistion on the shelf may be accurately determined." —Encyclopedia Britannica, 1910

Slider of Kelvin Ampere Balance

"The upper edge of the shelf on which the weights slide is graduated into equal divisions, and the weight…

A leyden jar.

Leyden Jar

A leyden jar.

A lighter for cigars or cigarettes

Cigar Lighter

A lighter for cigars or cigarettes

Circuit protecting fuse contained within a wire.

Fusible Link

Circuit protecting fuse contained within a wire.

"As the speed increases, and the link is 'notched up', the lead is increased as the cut—off is shortened, and at high speed we have a large lead. With the Gooch link, the lead can be set for average running speed, and although a little too great for good work at slow speed." —Derr, 1911

Steam Engine Gooch Link and Valve Gear Arrangement

"As the speed increases, and the link is 'notched up', the lead is increased as the cut—off is…

Locomotive steam engine, with parts named.

Locomotive

Locomotive steam engine, with parts named.

This is a tap and dye machine or cutting tool, which is used when creating screw threads.

Pipe Fitting Threading Machine

This is a tap and dye machine or cutting tool, which is used when creating screw threads.

General arrangement of machinery.  A, upcast shaft; b, winding gear; c, downcast shaft; d, porch; e, cage; f, wire rope; g, head-gear pulley; h, winding engine; k, "tipplers"; l, screens.

Machinery

General arrangement of machinery. A, upcast shaft; b, winding gear; c, downcast shaft; d, porch; e,…

An arm attached at right angles to a rotating shaft by which reciprocating motion is imparted to or received from the shaft. It is used to change circular into reciprocating motion, or reciprocating into circular motion.

Crank Mechanism

An arm attached at right angles to a rotating shaft by which reciprocating motion is imparted to or…

"To make the ligament, a very large number of exceedingly fine copper wirers laid close together are soldered to the upper surface of the upper trunnion." —Encyclopedia Britannica, 1910

Kelvin Flexible Metallic Ligament

"To make the ligament, a very large number of exceedingly fine copper wirers laid close together are…