US Patent: 828,884
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| Double-Acting Ratchet
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Patentee:
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| Emanuel Henrikson (exact or similar names) - Bridgeport, Fairfield County, CT |
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Patent Dates:
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| Applied: |
Jan. 25, 1906 |
| Granted: |
Aug. 21, 1906 |
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Joel Havens
"Vintage Machinery" entry for Bullard Machine Tool Co.
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Description: |
| Abstract:
This invention relates to new and useful improvements in ratchets, and is designed with special reference to use upon boring-mills, planers, and other machine tools. The feed-shafts of machine-tools of the above class frequently require a slight movement i5 for the fine setting of adjustment of the tool.
Claim:
In a ratchet of the class described, the combination of a sleeve, an arm pivoted thereon, a spring-actuated plunger mounted therein to engage the sleeve, a lever pivoted in the arm having shoulders engaged by the plunger to normally retain the lever i an intermediate position and adapted to operate the plunger by either a forward or backward movement of the lever. "2. In a ratchet of the class described, the combination with a sleeve having & toothed periphery, of an arm pivotally mounted thereon, a plunger mounted in the arm and adapted to engage the teeth of the sleeve, means to normally hold the plunger away from the teeth, a lever pivoted in the arm adapted. to operate the plunger to engage said sleeve by either a forward or backward movement. |
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