The American watchmaker and jeweler; an encyclopedia for the horologist, jeweler, gold and silversmith .. . Fig. 7f>. Fig. 75. for holding drills, made to fit in tail-stock spindles or taper chucks. illustrates the Gem Pivot Drill Chuck. Jeweling Chuck. The Hutchinson Jeweling Chuck, which is shownin Fig. 77, is intended as a substitute for wax, when manipulatingjewels. The cut represents a full size chuck, whichis made similar to the ordinary split chuck, but hasan adjustable center which can be moved backwardor forward by means of the screw in the rear, andis used to support the je
The American watchmaker and jeweler; an encyclopedia for the horologist, jeweler, gold and silversmith .. . Fig. 7f>. Fig. 75. for holding drills, made to fit in tail-stock spindles or taper chucks. illustrates the Gem Pivot Drill Chuck. Jeweling Chuck. The Hutchinson Jeweling Chuck, which is shownin Fig. 77, is intended as a substitute for wax, when manipulatingjewels. The cut represents a full size chuck, whichis made similar to the ordinary split chuck, but hasan adjustable center which can be moved backwardor forward by means of the screw in the rear, andis used to support the jewel while in place in thechuck. They are made in three sizes. Anotherform of jeweling chuck is shown in Fig. 78, and isknown as the Deuss Chuck. It is a self-centeringchuck which will hold all sizes of jewels and fits the^vheel or step chucks of all American lathes. Fig. 7S. Pivoting Chuck. The Gem patent pivoting chuck, shown in Pigs. 79and 80, is intended as a substitute for wax for pivoting and like 83 Chuck. By the means of the ball b, placed between the two sliding sockets c c,with the several other parts as represented in Fig. 79, a combination ofsliding and ball and socket movements in connection with a spring pumpcenter, is obtained. A set of ten or more, supplementary chucks^^ witlidifferent sizes of center holes, and attachment w, for all sizes of wiieels,are furnished with each chuck. The supplementary chuck^, in the form
Size: 1329px × 1880px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1800, bookdecade1890, bookidamericanwatc, bookyear1892
