Earth working – Guided by walking attendant; supported – propelled – or held... – Hand tool
Patent
1987-11-09
1989-12-12
Johnson, Richard J.
Earth working
Guided by walking attendant; supported, propelled, or held...
Hand tool
30318, 302961, 403273, 403282, 291483, A01B 110, A01B 122
Patent
active
048861251
ABSTRACT:
An improved accurate lightweight manual tool to cut suburban lawn and garden weeds efficiently and with little time and effort expended. It is like a miniature hoe half a man's height in length with a very thin very narrow blade, in length four to five times its width (FIG. 5). The chipper's light weight is achieved with a very lightweight conduit handle of any section joined at right angles by a secret joint to a backing plate for the blade and weighted with billet to increase and change the power for weight. A thin shock absorber is bolted between plate and blade by.
The secret joint uses a steel billet driven through the metal plate into the conduit handle thereby expanding the handle against the metal collar and plate which has a self-centering protrusion fitting into a recess in the collar. The permanent right angle secret locking joint uses totally prefinished components.
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Johnson Richard J.
Thompson Jeffrey L.
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