Non-destructive door frame tester

Details Non-destructive door frame tester Non-destructive door frame tester

G - Physics

01

N

73/77

G01N 3/02 (2006.01) G01M 99/00 (2011.01) G01N 3/00 (2006.01)

Patent

CA 1183369

ABSTRACT OF THE DISCLOSURE Apparatus for testing strength of door frames, consisting of a sturdy set of relatively movable pressure plates made of a heavy gauge sheet metal, designed for easy insertion into the usual space between the door and frame jamb at a position directly above the area of the latch bolt, and an interconnecting drive mechanism to apply a balanced force between the door and the frame on the inside only. Energy to drive the mechanism is supplied by the operator, using an ordinary drive socket and torque wrench with a modified scale that provides a direct indication of the force generated at the pressure plates. Frame spreading is also read on another scale and indicates an inverse measure of frame strength. Rotary motion from the wrench is converted to linear motion of the plates by means of a lever assembly which also multiplies the driving force to the high level required. This door frame tester provides the user with an accurate high strength means for non-destructive testing of new and older door frames.

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