Building block guide with hand-cranked clamping means

Details Building block guide with hand-cranked clamping means Building block guide with hand-cranked clamping means

1988-08-15

1989-09-19

Haroian, Harry N.

Geometrical instruments

Straightedge type

Wall guide and plumb

G01C 1510

Patent

active

048668516

ABSTRACT:
For constructing walls of building blocks and the like a device is provided that can be clamped down upon a corner block by turning a hand crank at the top of a long rod that extends above the top of the wall. Slide grips for a running line are provided that fit vertical flanges on the device.

REFERENCES:
patent: 458464 (1891-08-01), Kelley
patent: 4651495 (1987-03-01), Scarano

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