Geometrical instruments – Straightedge type – Wall guide and plumb
Patent
1979-09-28
1981-08-25
Phillips, Charles E.
Geometrical instruments
Straightedge type
Wall guide and plumb
G01C 1510
Patent
active
042851394
ABSTRACT:
Disclosed is a system of poles for aligning courses of brick of a brick wall wherein there is a pole disposed at each corner of said wall and at least one pole disposed intermediate between said corner poles, all of said poles containing line blocks which carry a tensioned line therebetween, the line block on the intermediate pole for ensuring that the line remains tensioned between said corner line blocks and all of said line blocks being synchronously adjusted in vertical height so that said tensioned line defines the horizontal component of each course of brick.
REFERENCES:
patent: 1234282 (1917-07-01), Butler
patent: 1989141 (1935-01-01), Leonard
patent: 2761214 (1956-09-01), Ruble
patent: 3038258 (1962-06-01), Pino
patent: 3101184 (1963-08-01), Allen et al.
patent: 3127683 (1964-04-01), Garton et al.
patent: 4144649 (1979-03-01), Huston
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