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Title: |
1892 Article-Springfield Emery Wheel Mfg. Co., Shimer Head Grinder |
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Source: |
American Machinist 28 Jan 1892 pg 07 |
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Insert Date: |
12/17/2011 4:35:46 PM |
Shimer Head Grinder — With this we present an illustration of a machine made especially for grinding the bits of Shimer heads or other similar work on wood-working machinery.
As will be seen from the engraving, the machine consists of a head supporting the emery wheel arbor at the top in such a manner as to be adjustable, and below this a head on which is supported an arbor to which the Shimer head is secured. This arbor can be raised or lowered for adjustment by means of a thread cut on the shank, and can be turned at any desired angle and clamped. When adjusted properly it is only necessary to bring the bits one after the other into position by revolving the arbor. They are ground by moving the carriage by the hand wheel shown. This insures uniform work, and, of course, the work is very quickly done, all the difficulties met with in grinding such bits by hand being entirely done away with. The machine weighs 420 pounds, or, without the table, 200 pounds. Its height from the table to the center of the spindle is 17", and from the floor 45". The emery wheel used is 10" x 3/8". There is a countershaft with T. & L. pulleys for a 3" belt, and it should run at a speed of 370 revolutions, giving the wheel a speed of 1,900 revolutions. It is made by the Springfield Emery Wheel Mfg. Co., Bridgeport, Conn. |
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1892 Springfield Emery Wheel Mfg. Co., Shimer Head Grinder
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