. Railway master mechanic [microform] . ying engraving is the re-sult of years of experience to manufacturing and using a visewhich will stand the wear and tear of hard work. The jawsbeing extra heavy cannot, be broken with a hand hammer,making it an excellent chipping vise. They are faced withcarefully tempered tool steel pieces, which can be easily re-placed should they become worn or injured. The wroughtbar is machined perfectly square and parallel, and is wellfitted into the pocket in the back jaw. It will be noticed thatthe plain part of the screw extends well into the back jaw,which enab
. Railway master mechanic [microform] . ying engraving is the re-sult of years of experience to manufacturing and using a visewhich will stand the wear and tear of hard work. The jawsbeing extra heavy cannot, be broken with a hand hammer,making it an excellent chipping vise. They are faced withcarefully tempered tool steel pieces, which can be easily re-placed should they become worn or injured. The wroughtbar is machined perfectly square and parallel, and is wellfitted into the pocket in the back jaw. It will be noticed thatthe plain part of the screw extends well into the back jaw,which enables the vise to be opened far enough for ordinaryuse before the thread is exposed. The screw is large indiameter, with a strong, square thread, well fitted into theback jaw, the threaded part (or nut) being as long as thejaws are wide. The vise swivels on a large washer, and canbe turned to any position and securely held there by thebottom screw and the pin through a lug on either side of the November, 1904. RAILWAY MASTER MECHANIC 477. Wrought Bar Parallel-Swivel For strengthening rods, the anvil at the backwill be found very useful. Attention is directed to the following table of weights anddimensions: Widthof Jaw. 4 5 6% Open. Weight. 70 94 141 212 This vise is manufactured by Merrill Brothers, of Brook-lyn, N. Y. 9 1012 Size of Wrought Bar. I%x2% iv8x2y8 1%x23/8 iy2x3 1%1% 4 » » A New Design of Gas Engine The Adams Company, of Dubuque, la., have brought out arevolving cylinder, air cooled, gasoline motorwhich is claimed to have distinctive advan-tages because of its compactness, its perfectbalance, light weight, wide range of speedsand power and air cooling qualities. It reverses the ordinary practice, in that theengine cylinders revolve and the crank shaftis stationary. Three units, each being a com-plete sylinder, with cylinder head and one-third of a central crank case cast in one piece,are bolted together and bolted to a top andbottom c
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