A man exercising with chest weights. In this position, he bends over and straightens his body with his hands over his head.

Chest Weights

A man exercising with chest weights. In this position, he bends over and straightens his body with his…

A man exercising with chest weights. In this position, he has bent over and now straightens his body with his hands over his head.

Chest Weights

A man exercising with chest weights. In this position, he has bent over and now straightens his body…

A man exercising with chest weights. In this position, he pulls his arms down and back, alternately repeating.

Chest Weights

A man exercising with chest weights. In this position, he pulls his arms down and back, alternately…

A man exercising with the treadles, the predecessor to the treadmill.

Treadles

A man exercising with the treadles, the predecessor to the treadmill.

A man exercising with the bridle. This device is used for neck exercises.

Bridle

A man exercising with the bridle. This device is used for neck exercises.

A man exercising with the stirrup. This device is used for leg exercises.

Stirrup

A man exercising with the stirrup. This device is used for leg exercises.

A man exercising with the traveling parallels. This device is used for upper body exercises.

Traveling Parallels

A man exercising with the traveling parallels. This device is used for upper body exercises.

A man exercising with the short inclined plane. This device is used for leg exercises.

Short Inclined Plane

A man exercising with the short inclined plane. This device is used for leg exercises.

A man exercising with the lifting machine. This device is used for leg exercises.

Lifting Machine

A man exercising with the lifting machine. This device is used for leg exercises.

A man exercising with the chest developer.

Chest Developer

A man exercising with the chest developer.

A man exercising with the chest expander.

Chest Expander

A man exercising with the chest expander.

A man exercising with the traveling bar.

Traveling Bar

A man exercising with the traveling bar.

A man exercising with the finger machine.

Finger Machine

A man exercising with the finger machine.

A man exercising with the long inclined plane, used for the upper body.

Long Inclined Plane

A man exercising with the long inclined plane, used for the upper body.

A man exercising with the giant pulley, used for chest and arms.

Giant Pulley

A man exercising with the giant pulley, used for chest and arms.

A man exercising with the high pulleys used for chest and arms.

High Pulleys

A man exercising with the high pulleys used for chest and arms.

A man exercising with the low pulleys used for chest and arms.

Low Pulleys

A man exercising with the low pulleys used for chest and arms.

A man exercising with the low pulleys used for chest and arms.

Low Pulleys

A man exercising with the low pulleys used for chest and arms.

A man exercising with the quarter circle used for chest and arms.

Quarter Circle

A man exercising with the quarter circle used for chest and arms.

A man exercising with the head lifting machine.

Head Lifting Machine

A man exercising with the head lifting machine.

A man exercising with the wrist machine.

Wrist Machine

A man exercising with the wrist machine.

A man exercising with the inclined parallels.

Inclined Parallels

A man exercising with the inclined parallels.

A man exercising with the folding table for the upper body.

Folding Table

A man exercising with the folding table for the upper body.

A man exercising with the upright parallels.

Upright Parallels

A man exercising with the upright parallels.

A man exercising with the upright parallels.

Upright Parallels

A man exercising with the upright parallels.

A man exercising with the adjustable ladder parallels.

Adjustable Ladder Parallels

A man exercising with the adjustable ladder parallels.

A man exercising with the chair leg machine.

Chair Leg Machine

A man exercising with the chair leg machine.

A man exercising with the pronator and supinator machine.

Pronator and Supinator Machine

A man exercising with the pronator and supinator machine.

A man exercising with the leg rotating machine

Leg Rotating Machine

A man exercising with the leg rotating machine

A man exercising with the flexor, foot, and ankle machine.

Flexor, Foot, and Ankle Machine

A man exercising with the flexor, foot, and ankle machine.

A man exercising with the wrestling machine.

Wrestling Machine

A man exercising with the wrestling machine.

A man exercising with the flexor shoes.

Flexor Shoes

A man exercising with the flexor shoes.

A man exercising with the extensor shoes.

Extensor Shoes

A man exercising with the extensor shoes.

A man exercising with the rowing machine.

Rowing Machine

A man exercising with the rowing machine.

A man exercising with the paddling machine, high attachment.

Paddling Machine

A man exercising with the paddling machine, high attachment.

A man exercising with the paddling machine, low attachment.

Paddling Machine

A man exercising with the paddling machine, low attachment.

A man exercising with the sculling machine, used for the upper body.

Sculling Machine

A man exercising with the sculling machine, used for the upper body.

"Sectional view of perfumery still: a, b, junction between head (which is lifted for admission and withdrawal of material) and pan; c, d, false perforated bottom to prevent material from burning; e, f, condenser (tub of cold water with coil, which discharges at e, and overflow pipe passing off at f)." -Department of Agriculture, 1899

Perfumery Still

"Sectional view of perfumery still: a, b, junction between head (which is lifted for admission and withdrawal…

"The repairing of a rent in the nest of the red tree ant (Ecophylla smaragdina). The nest is made of leaves, held together with a silken web. The figure shows the workers repairing a rent, one brigade of them being occupied in drawing the edges of the leaves together, while the others on the inside of the nest move the spinning larvae back and forth across the gap." -National Geographic, 1912

Red Tree Ants

"The repairing of a rent in the nest of the red tree ant (Ecophylla smaragdina). The nest is made of…

Invented by Eli Whitney, the cotton gin is a machine that quickly separates the cotton from the seeds.

Cotton Gin

Invented by Eli Whitney, the cotton gin is a machine that quickly separates the cotton from the seeds.

When binding books they are "sewed on a frame, each sheet being attached by a thread to cords across the back. The sewing, though sometimes done by a machine, is cheifly executed by girls."-Lupton

Book Binding

When binding books they are "sewed on a frame, each sheet being attached by a thread to cords across…

The paper-making machine almost superseded the old hand making process of forming paper.

Paper Making Machine

The paper-making machine almost superseded the old hand making process of forming paper.

"The modern system of cotton manufacture dates no further back than back 1760. Prior the mechanical inventions of Hargeaves, Arkwright, Crompton and Cartwright, the arts of spinning and weaving were entirely domestic, and the instruments of manipulation much the same as those which had been in use in the East for centuries before." -Lupton

The Spinning Jenny

"The modern system of cotton manufacture dates no further back than back 1760. Prior the mechanical…

Open-delivery web machine of Hoe & Co.

Web Machine Printing Press

Open-delivery web machine of Hoe & Co.

A straight or slightly curved metallic bar, with teeth n one of its edge, adapted to work into the teeth of a wheel or pinion, for the purpose of converting a circular into a rectilinear motion or vice versa.

Machinery Rack

A straight or slightly curved metallic bar, with teeth n one of its edge, adapted to work into the teeth…

A machine for cutting down standing grain, usually worked by a pair of horses, the cutting machinery being driven by being connected with the wheels on which the machine is drawn over the field.

Reaping Machine

A machine for cutting down standing grain, usually worked by a pair of horses, the cutting machinery…

"The lever of the first class has the fulcrum between the power and the weight." Examples: a common crowbar, a pump handle, scissors, a seesaw. -Foster, 1921

First Class Lever

"The lever of the first class has the fulcrum between the power and the weight." Examples: a common…

"The lever of the second class has the weight between the power and the fulcrum." Examples: a nutcracker, a wheelbarrow. -Foster, 1921

Second Class Lever

"The lever of the second class has the weight between the power and the fulcrum." Examples: a nutcracker,…

"The lever of the third class has the power between the weight and the fulcrum." Examples: sewing machine treadle, forearm. -Foster, 1921

Third Class Lever

"The lever of the third class has the power between the weight and the fulcrum." Examples: sewing machine…

(1809-1884) American inventor of the first reaping machine and founder of the McCormick Harvesting Machine Company.

Cyrus Hall McCormick

(1809-1884) American inventor of the first reaping machine and founder of the McCormick Harvesting Machine…

Device for transferring water up from a lower body.

Archimedean Screw

Device for transferring water up from a lower body.

"Coiled baskets are made by sewing over and over with some sort of flexible material, each stitch interlacing with the one underneath." -Foster, 1921

Coiled Work Basket Weave

"Coiled baskets are made by sewing over and over with some sort of flexible material, each stitch interlacing…

"Coiled baskets are made by sewing over and over with some sort of flexible material, each stitch interlacing with the one underneath." -Foster, 1921

Coiled Work Basket Weave

"Coiled baskets are made by sewing over and over with some sort of flexible material, each stitch interlacing…

German for "running machine", the dandy horse was a two-wheeled vehicle propelled by the rider's feet.

Dandy Horse

German for "running machine", the dandy horse was a two-wheeled vehicle propelled by the rider's feet.

A safety-valve, in which a weight is employed. Here a is the valve, b b the boiler, c c the valve-seat, usually, like the valve itself, made of gunmetal, d the lever turning upon a fixed center at e, and pressing upon the valve by a steel point f, a guide for the lever g a weight which may be shifted backwards and forwards according to the pressure desired.

Lever Safety-valve

A safety-valve, in which a weight is employed. Here a is the valve, b b the boiler, c c the valve-seat,…

A form of spring safety-valve, in which a series of bent springs h h h are placed alternately in opposite directions, their extremities sliding upon the rod i, and the springs being kept down by the crossbar k; a being the valve, c the valve-seat, and b b part of the boiler.

Lever Spring Safety-valve

A form of spring safety-valve, in which a series of bent springs h h h are placed alternately in opposite…

"The principal working parts of the apparatus are the sheet of boiler plate a (fig. 100), the cylinder c, the piston head p, the screw s, and conduit plate d...f, frame." -Walcott, 1901

Intrusion Machine

"The principal working parts of the apparatus are the sheet of boiler plate a (fig. 100), the cylinder…

A machine for adding and subtracting by mechanical means.

Calculating machine

A machine for adding and subtracting by mechanical means.

This machine cuts the corn and binds the stalks in bundles ready for shocking.

Cutting Mechanism of Corn-Harvester

This machine cuts the corn and binds the stalks in bundles ready for shocking.

Two biplanes flying through the clouds.

Airplanes

Two biplanes flying through the clouds.