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…
A man exercising with chest weights. In this position, he pulls his arms down and back, alternately…
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.
"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…
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The paper-making machine almost superseded the old hand making process of forming paper.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…
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…
"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,…
"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…
"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…
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,…
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…
This machine cuts the corn and binds the stalks in bundles ready for shocking.