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Title: |
1892 Article-Hurlbut-Rogers Machine Co., Cutting-Off Machine |
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Source: |
American Machinist 11 Feb 1892 pg 5 |
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Insert Date: |
3/28/2012 9:46:04 PM |
A New Cutting-off Machine.
We give with this a general and a detailed view of a cutting off machine, which is provided with a device by which the motion of the spindle is accelerated as the tool approaches the center of the stock, and the cutting speed is thus kept at about 25 feet per minute until the tool is within 3/8 of the center.
The means by which this is accomplished will be readily understood by an inspection of the detail view, in which D D are disks of iron covered with hard leather, and driven in opposite directions by an arrangement of quarter-twist belts. Between these disks is a smaller cast-iron disk, to which motion is given by the two large disks which are forced upon it by the action of a spring. This smaller disk is moved to or from the center of the larger ones by a cam on the back tool slide, so that as the tool approaches the center the speed is increased.
Motion is transmitted from the small disk to the spindle by a train of gears, which are in the ratio of 8 to 1, so that the driving power is ample.
A wedge operated by a convenient lever is used to separate the large disks, thus stopping the machine, and allowing the tool slides to be placed in any position.
As would be expected, it is found that this device results in a very great increase in capacity, and the machine cuts easily three square inches of stock per minute. The accelerating device is the invention of Mr. Eugene Childs, and the machine is made by the Hurlbut-Rogers Machine Co., South Sudbury, Mass. |
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1892 Hurlbut-Rogers Machine Co., Cutting-Off Machine
1892 Hurlburt-Rogers Machine Co., Cutting-Off Machine Drawings
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