US Patent: 1,044,517 - Valve Lifting Device


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US Patent: 1,044,517

Valve Lifting Device

Patentee:

Bror Carl Ivar Hallgren (exact or similar names) - Pasadena, CA

USPTO Classifications:

29/221

Tool Categories:

specialty tools : valve spring tools

Assignees:

None

Manufacturer:

Not known to have been produced

Witnesses:

Patent Dates:
Applied:	Nov. 20, 1911
Granted:	Nov. 19, 1912

Patent Pictures:

Bror Carl Ivar Hallgren patent Nov. 19, 1912

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Description:

The focus of the patent is the notched arc and corresponding "half shaft" locking pin used to hold the jaw adjustment. The locking pin is turned by a wing nut; a stop prevents rotation of the locking pin past the point of full engagement.