Drop forging, die sinking and machine forming of steel; modern shop practice, processes, methods, machines, tools and details.. by Woodworth Joseph Vincent 1877-

Author:Woodworth, Joseph Vincent, 1877-
Language: eng
Format: epub, pdf
Tags: Forging, Dies (Metal-working), Steel
Publisher: New York, The Norman W. Henley publishing co.
Published: 1911-03-25T05:00:00+00:00

diameter, and finally piercing the flange for the eight rivets. It will be noted in Fig. 197 that the cast-iron hubs have a small triangular boss on one side. This touches both flanges and serves to locate the flanges and spokes midway of the hub length. This short boss might have taken the form of a circular flange, but this would increase the weight to no advantage.

The flange-blanks are heated to dark-red in a muffle having a bottom of broken fire-brick, kept red hot by a natural

FIG. 203.—Riveting spokes in wheels. Air-power hammer.

gas and air-pressure fire, same general arrangement as the welding fire, all as clearly shown in Fig. 20S, attended by a youth wearing London smoke goggles, who places the blanks on the muffle bottom and pulls them out with a long, slender, steel-rod hooked at the working-end, always keeping one blank heated red hot on the sill of the muffle-door at the left, ready to be taken with tongs by the pressman, who sits at the right of the press on a cushioned seat shown in Fig. 206, which shows the relative locations of the forming-press and the heating-muffle.

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