Geometrical instruments – Scriber – Curved line
Patent
1975-06-11
1978-04-18
Aegerter, Richard E.
Geometrical instruments
Scriber
Curved line
B44D 300
Patent
active
040843211
ABSTRACT:
An improved mason's guide for anchoring and positioning an aligning cord. The guide has a clamp element with a pair of adjustable fingers attached thereto, the fingers being designed to affix the guide temporarily to any one of a variety of masonry building units. The aligning cord is secured at one of its ends to a fixed point and at its other end by the cord being wound around one of the adjustable fingers and between the clamp and a convex washer attached thereon. A neoprene sleeve is located on one of the fingers for accurately positioning the aligning cord and allowing the mason's guide to clamp a masonry unit more securely. The guides may also be used to position an aligning cord at a point between its two fixed ends as is required when an obstruction lies in the path of the aligning cord.
REFERENCES:
patent: 2948065 (1960-08-01), Simonic
patent: 3436832 (1969-04-01), Juberigan
patent: 3698089 (1972-10-01), Huston
patent: 3751810 (1973-08-01), Valva
Aegerter Richard E.
Cox Jerome R.
Shepperd John W.
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