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Title: |
1900 Article-Selig, Sonnenthal & Co., Turret Lathe |
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Source: |
English & American Lathes, 1900 pg 153 |
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Insert Date: |
12/25/2012 12:34:11 PM |
Fig. 285 illustrates an English lathe by Selig, Sonnenthal & Co., which combines the functions of the turret machine with those of cutting off, drilling and forming. The advantages are that it can be used for cutting off and centring only, or for the turning of irregular shapes from the solid bar more cheaply than by forging and turning. The spindle is hollow to permit bars to be passed through it. In the 7½-in. centre lathe the hole will admit a 2½ in. bar; in the 9½-in. centre, a 3 in. bar. There is no interference of the various rests with each other, since the drilling-rest, and the adjustable stop-bracket swing back on a bar behind, and the turret-rest and slide can be moved to the extreme right when not required, and the cut-off rest can be similarly moved to the left next the headstock.
In Fig. 285 the cutting-off rest and the drilling attachment are seen in position for operating—the turret, and the adjustable stop being out of the way. The drilling apparatus is operated by a separate small countershaft, seen on the ground to the right, and by the hand-lever. It can be ungripped from the bed, and thrown back instantly. The cutting-off rest has two tool-slides, which work in unison, and the second tool can be adjusted while the lathe is running. The speed of the lathe can be accelerated as the tools approach the centre. The thrust of the headstock spindle is taken by ball bearings, running between adjustable collars of hardened steel. The lathe is very substantially built, and will cover a wide range of work. |
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1900 Selig, Sonnenthal & Co., Turret Lathe
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