Buckles – buttons – clasps – etc. – Cord and rope holders – Sliding part or wedge
Patent
1977-03-24
1978-11-21
Gelak, Bernard A.
Buckles, buttons, clasps, etc.
Cord and rope holders
Sliding part or wedge
24115M, 212 94, 403369, 403374, F16G 1104
Patent
active
041259190
ABSTRACT:
A cable clamp includes a box-like housing with opposite sidewalls, an open top and opposite end openings. A clamping mechanism within the housing includes a pair of laterally and longitudinally movable, laterally spaced inner clamping blocks with replaceable wear plates on their inner faces defining a cable passage therebetween so that a cable can pass freely longitudinally through the housing. A pair of outer wedging blocks back up the inner blocks and are laterally but not longitudinally movable within the housing. The outer blocks are spaced inwardly from the sidewalls of the housing to define wedging spaces. Longitudinally double-tapered outer faces of the inner blocks mate with complementary inner faces of the outer blocks. The outer faces of the outer blocks are vertically tapered to receive correspondingly tapered wedging surfaces of activating wedges movable vertically within the wedging spaces to drive the outer and inner blocks laterally toward the cable, causing the wear plates to grip it. Thereafter, external forces tending to cause relative movement between the clamp and cable activate a longitudinal wedging action induced by the double-tapered mating surfaces of the inner and outer blocks, increasing the clamping force on the cable with increases in such external forces. Upon withdrawal of the activating wedges from the wedging spaces, a spring-operated clamp release retracts the inner blocks from the cable and a spring-operated centering mechanism returns the inner blocks to longitudinally neutral positions within the housing.
REFERENCES:
patent: 179936 (1876-07-01), Bowen
patent: 525775 (1894-09-01), Wainwright
patent: 875121 (1907-12-01), Shryock
patent: 1150870 (1915-08-01), Lincoln
patent: 1187726 (1916-06-01), Good
patent: 1458906 (1923-06-01), Morisette
patent: 2765140 (1956-10-01), Gerlach
patent: 3247933 (1966-04-01), Hanna
patent: 3844419 (1974-10-01), Holmes
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