US Patent: 1,228,850
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| Wrench
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Patentee:
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| Wilbur S. Upson (exact or similar names) - Mansfield, Richland County, OH |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
Mar. 06, 1916 |
| Granted: |
Jun. 05, 1917 |
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Stan Schulz
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Description: |
| John N. Bar - patent attorney
I claim:
1. In a side jaw wrench, a handle made integral with a stationary jaw and an intermediate enlarged portion, said enlarged portion having a guideway formed therein in angular relation with respect to the handle and also having formed therein an intersecting angularly related aperture, a phi secured in the enlarged portion of the wrench, a spindle pivotally secured to said, pin and adapted to extend across said intersecting aperture and to be moved to and from said guideway, a worm screw mounted upon said spindle, a movable jaw slidably mounted in said guideway and having a shoe thereon with a series of cog teeth, and yielding means adapted to normally maintain said worm screw in mesh with said cog teeth, but adapted to be withdrawn therefrom at the will of the operator, said last-mentioned means also performing the function of preventing the worm screw from turning under normal conditions because of the frictional yielding contact maintained between the parts by said yielding means and automatically taking up the wear thereof.
2. In a side jaw wrench, a handle made integral with a stationary jaw and an enlarged portion, a guideway formed integral in the enlarged portion in angular relation with respect to the handle which intersects an aperture formed in. said enlarged portion and which is angularly related thereto, a pin secured to the wrench, a spindle pivotally secured to said pin in such, a manner as to extend across the aperture and which is adapted to be moved to and from said guideway, a worm screw mounted on said spindle, a jaw slidably mounted in said guideway carrying a shoe having a series of cog teeth formed thereon and extending into said intersecting aperture, and yielding means adapted to normally maintain said cog worm in mesh with the teeth of the jaw, but which is arranged to be disengaged at the will of the user, said last mentioned means also performing the function of preventing the worm screw from turning under normal conditions because of the frictional yielding contact maintained between the parts by said yielding means and automatically taking up the wear thereof.
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