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Title: |
1921 Article-Oliver Machinery Co., Vertical Hollow Chisel Mortiser |
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Source: |
Oliver Machinery Co.-Vertical Hollow Chisel Mortiser-Machinery, V28, Oct 1921, pg. 163 |
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Insert Date: |
6/21/2016 1:31:01 PM |
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The illustration shows a vertical hollow-chisel mortiser on which the driving motor is built into the mortising head or ram. The motor operates on either two- or three-phase, 60-cycle current and at a speed of 3600 revolutions per minute. The machine is a product of the Oliver Machinery Co., Grand Rapids, Mich. The housing for the motor and head is in one piece, and the rotor of the motor is mounted directly on the machine spindle, which runs in high-grade ball bearings. The motor is connected by means of a flexible Greenfield conduit to a safety enclosed starting switch with fuses. This construction eliminates a countershaft, pulleys, and belts, and so saves floor space. The machine is equipped with a compound table having a hand-wheel rack and pinion feed and a clamp for the work. It is provided with the usual bushings, wrenches, etc. |
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1921 Oliver Machinery Co., Vertical Hollow Chisel Mortiser
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