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Title: |
1903 Ad-H. B. Underwood & Co., Portable Clyinder Boring Bar |
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Source: |
Cassier's Magazine May 1903 pg 11 & Street Railway's Journal Dictionary 1907 pg 95 |
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Insert Date: |
7/12/2011 9:57:55 AM |
Photos taken at the New York Museum of Transportation, Rush, NY.——
UNDERWOOD PORTABLE BORING BAR. Designed for general boring, and is made in several sizes. All kinds of engines, steam hammers, pumps, blowing enignes, air compressors, Corliss valves, etc., can be bored in place. It has fixtures for boring (with one or both cylinder heads off) in any position and in very cramped places, as on board ship, etc. It can be readily operated in a space that is large enough to take the piston out of the cylinder. Many times cylinders can be rebored in place in less time than they could be removed from fixed position, leaving all steam connections, holding-down bolts etc., intact. Enough cutter-heads are furnished with each size bar to bore diameters given for each diameter of bar. These bars are powerfully geared and can be driven by power or hand. bach bar has two changes of feed; the feed screw is steel; the feed nut is also made of steel, cut in a peculiar way, insuring great wear. Special sizes made for special work. —H. B. Underwood & Company, Philadelphia, Pa. |
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1903 H. B. Underwood & Co., Portable Clyinder Boring Bar
1903 H. B. Underwood & Co., Portable Clyinder Boring Bar
1903 H. B. Underwood & Co., Portable Clyinder Boring Bar
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