Geometrical instruments – Area integrators – Electrical
Patent
1984-10-15
1986-04-29
Haroian, Harry N.
Geometrical instruments
Area integrators
Electrical
33481, 33482, 33474, G01B 330
Patent
active
045847754
ABSTRACT:
What is disclosed are novel tools for facilitating the laying of roof shingles so that shingles can be aligned on a roof to give regular and even courses. The tools provide an alignment and spacing of the shingles without the need of utilizing gauges or tools that require adjustments, and the lightweightness and small size of the tools provide easy storage at the worksite on the roof so that the workman need not make repeated trips to the ground to recover tools not having the advantages herein for storage, that have been dropped or dislodged.
REFERENCES:
patent: 368574 (1887-08-01), Eby
patent: 1645808 (1927-10-01), Gregel
patent: 2816367 (1957-12-01), Fink et al.
patent: 3548505 (1970-12-01), Candilo
patent: 4208799 (1980-06-01), Frantello
Haroian Harry N.
McKellar Robert L.
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