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Title: |
1895 Article-Pedrick & Ayer, Cylinder Boring & Facing Machine |
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Source: |
Industry Magazine, Feb 1891 pg. 108 & Modern Mechanism 1895 pg 78 |
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Insert Date: |
12/9/2012 8:33:51 PM |
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Cylinder Boring and Facing Machine—Fig. 4 shows a machine built by Pedrick & Ayer, of Philadelphia, for boring cylinders up to 25 in. diameter. The boring-bar is solid forged steel, the screw is of steel with bronze thrust-bearings. The bar can be slipped through the bearing and gearing, or left standing, while the tail-bearing or back pedestal is taken away and the cylinder is placed in position over the bar. The feed-casing is made to feed either way, and has two changes, to operate which it is only necessary to push in or pull out a pin in center of the hand-wheel. The facing-head can be readily placed on the bar as desired, and, if necessary, can be operated at same time the cylinder is being bored. The cutter-heads have a long bearing on the bar and arc arranged for four tools, that number being found by experience the most desirable, as it distributes the stress or strain on the bar. The bed is movable on the shears, and is easily set in position by the hand-wheel at the forward end of the machine. |
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1891 Pedrick & Ayer, Cylinder Boring & Facing Machine
1895 Pedrick & Ayer, Cylinder Boring & Facing Machine
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