American Machinist Volume 51

American Machinist Volume 51

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This historic book may have numerous typos and missing text. Purchasers can usually download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1919 edition. Excerpt: ...run continuously in oil and the thrust of the worm is taken against ball-thrust bearings. All of the gears subject to the greatest strains are of nickel steel, heat-treated and hardened. A olain block rest mounted on the cross-slide is regularly furnished, equipped with a single-screw toolpost and an adjustable positive cross-stop. A substantial compound rest can be supplied when conditions require it. The swivel is Targe in diameter and graduated in degrees for angular turning or taper boring. Adjustable taper gibs are provided to compensate for wear on the slides. The T-slot bolts are large in diameter and are placed in a circular T-slot enabling the top and swivel slides to be firmly clamped after setting. Lever-operated Quick-acting Tailstock A quick lever acting tailstock is provided to permit of the quick removal and replacing of work with a single movement of the operating handle. The center is brought into contact with the work at any desired pressure, by a conveniently placed lever, further movement of the same lever rigidly locking the tailstock barrel and clamping the spindle. The taper-turning attachment consists of a rigid bracket bolted to the front of the bed, which.arries an adjustable taper guide bar and a sliding shoe engaging the guide bar. The sliding shoe is attached to the cross-slide imparting to it an "in" or "out" movement with relation to the angular setting of the guide bar. The guide bar may be set from straight to 4i-in. taper per foot, either side of center, and clamped in the selected position by two heavy T-slot bolts. The taper guide bar and sliding shoe may be replaced by a form plate and roller for the automatic duplication of irregular shapes. Style B or C headstocks may be motor...show more

Product details

  • Paperback
  • 189 x 246 x 47mm | 1,628g
  • Rarebooksclub.com
  • United States
  • English
  • black & white illustrations
  • 123681150X
  • 9781236811509