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Title: |
1921 Article-Curtis & Curtis Co., #430 Pipe Threading Machine |
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Source: |
Machinery, V28, Dec 1921, pg. 333 |
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Insert Date: |
6/17/2016 1:02:13 PM |
A No. 430 motor-driven pipe-threading machine has been designed by the Curtis & Curtis Co., 324 Garden St., Bridgeport, Conn., to meet the requirements for a portable outfit equally adaptable for use in the shop or in the field. The pipe is held stationary in a vise which forms part of the machine, and the dies, which are contained in a die-head, are screwed on the pipe, power being supplied by the motor through rawhide, steel, and cast-iron reduction gears.
The die-head is equipped with an automatic release which opens the dies at the completion of a threading operation while the machine is still running, so that the pipe may be removed without backing off the thread or stopping the machine. By turning a small lever, the dies are reset and the machine made ready for the next cut, which is identical with the preceding one, both as regards the length and diameter of the thread. The die release is adjustable to enable either long or short threads to be cut. The machine is equipped with a cutting-off attachment that cuts the pipe square without leaving a burr. High-speed steel tools and an oiling system with a pump are furnished with each outfit. The rating of the motor is 1 horsepower, and it may be run on ordinary lighting current. The machine, complete, weighs approximately 350 pounds. |
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1921 Curtis & Curtis Co., #430 Pipe Threading Machine
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