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Title: |
1887 Ad-Pedrick & Ayer, Locomotive Cylinder Boring Machine |
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Source: |
The Official Railway List 1887 pg 30 & Modern Mechanism 1895 pgs 78-79 |
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Insert Date: |
6/7/2011 8:57:25 PM |
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Portable Cylinder Boring-Machine.—Fig. 6 shows a portable machine built by Pedrick & Ayer, of Philadelphia, especially adapted to boring out locomotive-cylinders in their places, by removing only one or both heads and piston. The back-head, cross-head, or slides need not be removed, unless so desired. On removing the piston and leaving the front head and stuffing-box, a small cone takes the place of the stuffing-box, and with proper adjustment at the front head the machine is ready for work; it is fed with a constant feed of cut-gears. The clamps or cross-heads arc so arranged that they may Ik; used conveniently on locomotive-cylinders of all sizes. The same bolts or studs that fasten the cylinder-head on are used to bolt the bar supports also. Two rods are fastened to the ends of the cross-head that supports the bar in the cylinder and to an adjustable swivel cross-head on the end of the screw; these take the whole of the thrust and torsion strain of the bar. It makes no difference which position the bar is in, the end thrust is always in line with it, causing it to cut steady, smooth, and true. The feed can be thrown out of gear at any time, and the machine will also feed automatically. Another portable boring-machine, built by Pedrick & Ayer, is designed for reboring, in present positions, all makes and sizes of steam-engine cylinders. It is so constructed that the piece being bored serves as the bed or support of the bar. The cutter heads are fed by a screw in one side of the bar, and are operated by the feed-casing on the end that contains the gearing, by changing position of which two changes can be made, slow feed for roughing out, and fast for finishing cuts. The feed is automatic and constant, or at the pleasure of the operator. The bar is driven by a train of cut gears either with a crank or belt for power. |
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1887 Pedrick & Ayer, Locomotive Cylinder Boring Machine
1895 Pedrick & Ayer, Locomotive Cylinder Boring Machine
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