Geometrical instruments – Area integrators – Electrical
Patent
1975-12-30
1977-11-22
Aegerter, Richard E.
Geometrical instruments
Area integrators
Electrical
33174G, 33194, G01B 300, E06B 300
Patent
active
040589021
ABSTRACT:
A door hinge template is disclosed for locating and marking screw holes for hinges used for mounting doors. The template comprises a rectangular frame having a large rectangular central opening that is defined by two longitudinal and two transverse edge members. Each edge member has a rectangular central opening located in the corresponding longitudinal or transverse direction. Two measuring frames mounting a positioning rod are themselves slidably mounted in the transverse openings. Slidably mounted in one of the two longitudinal openings are a pair of positioning rods for gauging the transverse position of the hinge screw holes. The hinge screw holes are indicated by an equal number of pointers slidably mounted for movement in a transverse direction in the central opening of a corresponding frame. The frame is in turn slidably mounted for movement in the longitudinal direction in the longitudinally extending openings in the edge members.
REFERENCES:
patent: 2435256 (1948-02-01), Whitmore
patent: 2821027 (1958-01-01), Billhimer
Aegerter Richard E.
Little Willis
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