"Bessemer Converting Vessel. Bessemer Steel is steel made direct from pig iron by a process patented in 1855, and subsequently, by Henry Bessemer. This process, as now worked, is briefly as follows: The pig iron is remelted in a cupola, and poured into a large vessel called a converter, lined with fire bricks and capable of revolving upon horizontal trunnions." -Vaughan, 1906

Bessemer Converting Vessel

"Bessemer Converting Vessel. Bessemer Steel is steel made direct from pig iron by a process patented…

"A projecting edge, rim, or rib on any object, as the rims by which cast-iron pipes are connected together, or the marginal projections on the tires of railroad-car wheels to keep them on the rails." -Whitney, 1911

Flange

"A projecting edge, rim, or rib on any object, as the rims by which cast-iron pipes are connected together,…

"A projecting edge, rim, or rib on any object, as the rims by which cast-iron pipes are connected together, or the marginal projections on the tires of railroad-car wheels to keep them on the rails." -Whitney, 1911

Flange

"A projecting edge, rim, or rib on any object, as the rims by which cast-iron pipes are connected together,…

"A projecting edge, rim, or rib on any object, as the rims by which cast-iron pipes are connected together, or the marginal projections on the tires of railroad-car wheels to keep them on the rails." -Whitney, 1911

Flange

"A projecting edge, rim, or rib on any object, as the rims by which cast-iron pipes are connected together,…

"A machine for bending the edges of boiler-iron, ship-plates, or sheet-metal to form a curved or bent edge or flange." -Whitney, 1911

Flanging Machine

"A machine for bending the edges of boiler-iron, ship-plates, or sheet-metal to form a curved or bent…

"A shallow frame of wood or iron used in foundries to contain the sand and patterns employed in molding and casting." -Whitney, 1911

Two-Part Flask

"A shallow frame of wood or iron used in foundries to contain the sand and patterns employed in molding…

A face plate for milling on a lathe. The circular blades used for milling can be adjusted by using loosening or tightening the nuts for different cuts.

Relieving Milling Cutters Lathe

A face plate for milling on a lathe. The circular blades used for milling can be adjusted by using loosening…

A spiral milling apparatus for a lathe to create drills and flutes. The working surface is fastened to the lathe by the bolt on the left. While the rod is spinning, a spindle is inserted in a hole at a desired angle.

Spiral Milling Lathe

A spiral milling apparatus for a lathe to create drills and flutes. The working surface is fastened…

"The cutting-tool in a screw-cutting machine; a screw-plate." -Whitney, 1911

Screw Cutting Die

"The cutting-tool in a screw-cutting machine; a screw-plate." -Whitney, 1911

A section of a screw-cutting die.

Screw Die Section

A section of a screw-cutting die.

"A handle for holding the threaded die by which the thread is cut on a bar, a nut, or a pipe; a die-stock; a screw-plate." -Whitney, 1911

Screw Stock

"A handle for holding the threaded die by which the thread is cut on a bar, a nut, or a pipe; a die-stock;…

"Jewelers' box of dies, stocks, and taps (called a screw-plate set." -Whitney, 1911

Screw-Plate Set

"Jewelers' box of dies, stocks, and taps (called a screw-plate set." -Whitney, 1911