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Title: |
1919 Article-Thompson Grinder Co., Tool & Cutter Grinder |
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Source: |
Machinery Magazine, V25, Jun 1919, pg. 1001 |
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Insert Date: |
12/11/2017 7:24:56 PM |
THOMPSON TOOL AND CUTTER GRINDER
The Thompson Grinder Co., Springfield, Ohio, has recently redesigned its universal tool and cutter grinder, and among other changes, a two-speed mechanism for the longitudinal travel of the table has been Incorporated in the design. This is a distinct Improvement over the one-speed arrangement that was formerly used. For traversing the table forward and backward on the slow speed, the large handwheel at the front of the machine is used. On the other end of the shaft that carries this wheel, there is a worm meshing with a large spur gear which, in turn, meshes with a rack that is made an integral part of the ways on which the table lies. The quick action is obtained by movement of the lever that is attached directly to the end of the shaft on which is carried the large spur gear. Before it is possible to operate from this lever, the worm previously mentioned must be disengaged. This is easily accomplished by turning the small handle shown behind the handwheel, which operates an eccentric bushing and throws the worm out of mesh. Aside from the features Just described, the Thompson universal tool and cutter grinder is built along the same lines as machines formerly manufactured by this company, which were illustrated and described in the August 1918 number of Machinery. |
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1919 Thompson Grinder Co., Tool & Cutter Grinder
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