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US Patent: 829,238
Lifting-jack
Patentee:
Edwin E. Thomas - Portland, OR

USPTO Classifications:
254/108, 254/133R, 254/2C

Tool Categories:

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
Elijah Corbett
F. G. Davis

Patent Dates:
Applied: Mar. 12, 1906
Granted: Aug. 21, 1906

Patent Pictures:
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Description:
The inventor was a prolific designer of sawmill machinery. This jack was designed to lift low loads but keep the operator a safe distance from the load, e.g., when positioning the jack. The jack also lifts across a width so that one jack can safely lift a load prone to tipping, such as a lumber stack.

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