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 | | In electrical fot-gitig, the metal is quickly heated by a cutuetit f electricity, tue curt-cut being regu- lated by automatic devices, so that t in heating pieces of n~etah of tiliferetit ditaensions, the same degi-ec of heat cart lie utpphietl to each stucceetliug piece, regarti less tf its size. |
 | | By tite electric process, the heat, or current, is applied only so lomtg as needed, aitd all of tite heat is expended on time piece of metal in process of treatment. |
 | | The ordinary method of making chain links is to em~)loy a pai of (lies, the hottoni one, which is fixed, having in its face a Usliaped grooVe constructed to receive the end portion of the link to be welded, and the upper, or moving, one being a substantial counterpart of the lower one. |
| memory.loc.gov /ndlpcoop/nicmoas/manu/manu0024.sgm (15090 words) |
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