The air enters the sand blast through the pipe, at the same time, the sand enters the chamber by lifting the second stop. At the very top of the chamber, sand is fed into the system. The lever is pulled to make the air and sand mixture go through the flexible hose. Sand blasting is used to clean metal.

Metal Cleaning using Sand Blast

The air enters the sand blast through the pipe, at the same time, the sand enters the chamber by lifting…

A galloway boiler, section beyond the bridge.

Boiler

A galloway boiler, section beyond the bridge.

A lancashire boiler

Boiler

A lancashire boiler

A simple vertical boiler

Boiler

A simple vertical boiler

A vertical boiler with internal combustion chamber

Boiler

A vertical boiler with internal combustion chamber

A vertical boiler with internal combustion chamber

Boiler

A vertical boiler with internal combustion chamber

A vertical boiler with internal combustion chamber

Boiler

A vertical boiler with internal combustion chamber

A vertical boiler with internal combustion chamber

Boiler

A vertical boiler with internal combustion chamber

A siimple ended marined boiler

Boiler

A siimple ended marined boiler

A siimple ended marined boiler

Boiler

A siimple ended marined boiler

A double ended marine boiler

Boiler

A double ended marine boiler

A normand boiler

Boiler

A normand boiler

A normand boiler

Boiler

A normand boiler

A Thornycroft-Shulz water-tube boiler

Boiler

A Thornycroft-Shulz water-tube boiler

A furnace is a device used for heating, mostly for manufacturing. Heat energy usually comes from fuel combustion, or electricity.

Arch Plate for Furnace

A furnace is a device used for heating, mostly for manufacturing. Heat energy usually comes from fuel…

Crucible furnace used to melt metal. The stream of ignited gas enters the chamber to mix with air at the valve. The heat generated by this process will reach the metal's melting point to create a desired product.

Crucible Furnace for Melting Metal

Crucible furnace used to melt metal. The stream of ignited gas enters the chamber to mix with air at…

This illustration shows two glue cakes after the glue manufacturing process. The top image is a french cake, 7.5x7.5 inches square. The bottom image is an ordinary cake, a rectangle, 9 in by 5.5 in.

Glue Cake (Manufacturing)

This illustration shows two glue cakes after the glue manufacturing process. The top image is a french…

Three men at work grinding scissors.

Grinding Hull

Three men at work grinding scissors.

The hardening process for drop hammer dies is done by containing the hardening liquid, usually water, is contained in a containment vessel. The liquid is pumped into the container to cool the metal.

Hardening Dies for Drop Hammers

The hardening process for drop hammer dies is done by containing the hardening liquid, usually water,…

In 1911, there were many Indian Industrial Schools. Picture here are some Indian apprentices making harness.

Indian Apprentices Making Harness

In 1911, there were many Indian Industrial Schools. Picture here are some Indian apprentices making…

"Using the "stick" to mark size for which slate must be cut."—Finley, 1917

Marking slate

"Using the "stick" to mark size for which slate must be cut."—Finley, 1917

George Clymer improved upon Gutenberg's press by making it out of iron therefore reducing the force required.

Columbian Press

George Clymer improved upon Gutenberg's press by making it out of iron therefore reducing the force…

"Double cylinder press, 1835-1900. These presses were built up to 1900 and this picture shows the latest design brought out about 1882." -Hill, 1921

Double Cylinder Press

"Double cylinder press, 1835-1900. These presses were built up to 1900 and this picture shows the latest…

"Single large cylinder press, 1832-1900." -Hill, 1921

Single Large Cylinder Press

"Single large cylinder press, 1832-1900." -Hill, 1921

"Single small cylinder press, 1835-1900." -Hill, 1921

Single Small Cylinder Press

"Single small cylinder press, 1835-1900." -Hill, 1921

The hand printing press was invented by Peter Smith and manufactured by Robert Hoe in 1822.

Hand Press

The hand printing press was invented by Peter Smith and manufactured by Robert Hoe in 1822.

"Isaac Adam's bed and platen press, 1830." -Hill, 1921

Adams' Platen Printing Press

"Isaac Adam's bed and platen press, 1830." -Hill, 1921

"Treadwell's wooden-frame bed and platen power press, 1822." -Hill, 1921

Treadwell's Platen Printing Press

"Treadwell's wooden-frame bed and platen power press, 1822." -Hill, 1921

Charles Stanhope improved upon Gutenberg's press by making it out of cast iron therefore reducing the force required and increasing the printed area.

Stanhope Press

Charles Stanhope improved upon Gutenberg's press by making it out of cast iron therefore reducing the…

Showing the different stages of scissors manufacturing.

Scissors manufacturing

Showing the different stages of scissors manufacturing.

"When the soap is properly formed, the lye is carefully separated from it, and then it is removed in buckets to the 'frame room,' where it is poured into large frames which are like bins, their sides being bolted together." _Lupton

Manufacturing of Soap

"When the soap is properly formed, the lye is carefully separated from it, and then it is removed in…

Dressing slates.

Splitting slates

Dressing slates.

Splitting slates.

Squaring slates

Splitting slates.

A method to cool a large number of steel during the hardening process. The top barrel A drains the water into barrel B, then the overflow from barrel B goes is directed into barrel C. The pump transfers back the overflow back into barrel A using a pipe.

Cooling Water for Hardening Steel

A method to cool a large number of steel during the hardening process. The top barrel A drains the water…