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Title: |
1892 catalog entry - Wrist Pin Machine |
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Source: |
1892 Manning, Maxwell & Moore's Illustrated Catalogue of Railway and Machinists' Tools and Supplies |
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Insert Date: |
9/5/2022 12:19:35 PM |
This machine is portable, and consists of two side castings or "housings," held together by two parallel rods, ground true. These rod serve as guides, on which the turning device slides. Between the two guide rods a screw is placed, as near as possible to the work; and this screw, being turned by gearing on the end of the crank shaft, becomes an automatic feed, which will operate in either direction; or, for convenience in finishing out the fillets at either end of ,the wrist pin, this feed can be thrown out, and the device worked by hand.
The sliding arrangement which carries the annular cutter-head or tool holder is composed of two parts, held firmly together by four steel collar bolts, the parting line being exactly in line with the guide rod and feed screw, and all together are on the centre line of the machine.
The cutter-head or tool holder is of steel, and its division allows it to be adjusted around the wrist pin to be turned. Gear teeth, cut out of a portion of its circumference, engage with others, operated by the crank shaft.
In the housings; centres are placed to hold the cross head to be operated on. These centres are in line with the main guide rod, and exactly central to the tool holder.
The tools are inserted in the sides of the tool holder, and are held in place by screws fitted into holes, countersunk for manipulation by a socket wrench, and can be readily taken out to grind.
These machines are also built for stationary use in shops; and those of the stationary type, being driven by power, are adapted to a great range of work.
The machine shown in the accompanying cut is of a size intended for general use in locomotive shops, either on new work, or for trueing oval or cut wrist pins.
Each machine, when received, has all the necessary wrenches, tools, etc., for immediate use. |
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