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Title: |
1893 Article-Rushworth & Co., Heavy Plate Edge Planing Machine |
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Source: |
The Engineer, V76, 27 Oct 1893, pg. 410 |
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Insert Date: |
4/10/2019 12:33:50 PM |
HEAVY PLATE EDGE PLANING MACHINE
We illustrate above a very large and fine machine tool, made by Messrs. Rushworth and Co. for a steel works in Scotland. It will plane plates 30-ft. long on the edge and will also plane the ends up to 6-ft. wide at one setting, and, at the same time, perfectly square. The turnover tool holders are of steel, cut both ways, and have both a vertical and transverse feed. The tool-box on end planer is arranged to cant, so as to bevel the edges of plates. The main screw is of steel, and works in brass bearings at each end, and is arranged with a loose cap at one end, so that the screw can be lifted out when required, by drawing it out of one bearing, &c. Under the screw is a continuous bearing, bored out full length, for supporting it, and to insure proper lubrication. At the extreme end of the screw is fixed a tail-bar or bridge, with an adjustable steel centre or pin to take up the slightest wear out of the screw and keep it in its own position. At the other end of the bed a similar bridge with two large brass washers, 7½-in, diameter, is provided to take the thrust, so the stress is all within the main casting, and not dependent on the separate bearing, which supports the screw at the pulley end. The driving pulleys are 30-in. diameter for 5-in. belts, with self-acting reverse motion, as illustrated. The machine can be stopped or started at the end of the bed, or by a handle on the tool carriage. The cramp rail is made very strong, and the screws can be made to slide to any part of it, so that as many screws can be got on a short plate as may be required. This is a great advantage in securing a plate to be planed. The table is 2-ft. wide, with brackets cast out at the back to support the plate being planed and stop-holes are cast in to hold the plates. These machines can be made to o any length, either on side or end, and, if required, can be arranged to have all the driving pulleys at one end, all on one shaft, to drive both separate or together. Its total weight is 20 tons. |
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1893 Rushworth & Co., Heavy Plate Edge Planing Machine
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