Testing device for passing inside caliper gauges through pipes a

Details Testing device for passing inside caliper gauges through pipes a Testing device for passing inside caliper gauges through pipes a

1980-12-23

1982-05-25

Little, Willis

Geometrical instruments

Area integrators

Electrical

33178B, 33178F, G01B 508

Patent

active

043309437

ABSTRACT:
The inventive device (FIG. 1) comprises a hollow head 14 accommodating a resilient bush 22 having a slider 26 which is axially adjustable by means of an adjusting screw 30. Said bush is slotted to give radial leaf springs which co-operate with balls 36 held in recesses provided in hollow head 14 so as to be maintained in spring engagement with a slot 38 provided within a sleeve 16, which slideably accommodates said head 14 and removably holds caliper gauge D. When the latter becomes accidentally jammed in pipe A, operative connection between hollow head 14 and said sleeve 16 is cut off and said head is conveniently allowed to move forward and then quickly backward to bump against the jammed caliper gauge and knock it out of the pipe.

REFERENCES:
patent: 1805343 (1931-05-01), Robbins
patent: 2226078 (1940-12-01), Spahn
patent: 2888751 (1959-06-01), Pedrick
patent: 3872600 (1975-03-01), Siminsky
patent: 4028811 (1977-06-01), Hutter et al.
patent: 4058901 (1977-11-01), Lendi et al.

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