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Title: |
1875 Article-Henderer Brothers, Alcott Lathe |
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Source: |
Knight's American Mechanical Dictionary 1875 pg 1535 |
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Insert Date: |
9/2/2011 8:56:34 AM |
Nulled-work — Turned work resembling a series of beads strung on a rod. Much used in spindles and rolls for bedsteads, chairs, cribs, and other articles of furniture.
It is made in lathes whose cutter is automatically raised and depressed as the feed-screw draws it along on the bed. Fig. 3337 shows Alcott's lathe with Rennie's attachment. This consists of the lever a, with the adjustable knife-holders b b and attached ami c, back-rest d and rack c, with which the arm c engages.
In operating the machine, the lever a is turned up and the carriage propelled forward, the stick being rounded by the knife a; the carriage is then brought back to its first position, and by moving the lever up and down, the carriage is, through the arm c engaging with the rack c, advanced the proper distance and the nulls or beads formed by the cutter h. A device for forming tenons on the ends of the piece may also be attached. |
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1875 Henderer Brothers, Alcott Lathe
1868 Ad from Scientific American
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