Chain – staple – and horseshoe making – Chains – Links
Patent
1976-07-12
1978-07-25
Kundrat, Andrew V.
Chain, staple, and horseshoe making
Chains
Links
403 6, 403 9, 403154, 403157, 85 5N, F16B 2100, F16G 1306
Patent
active
041021240
ABSTRACT:
A pin or bolt slidingly supportable in rings at opposite ends, or throughout its body in a sleeve, such as through the eyes of a clevis, is usefully locked against axial displacement by a radially sliding spring-biased detent which fits into a groove of a supporting ring or sleeve, securing it against axial displacement. The supporting ring has a slot extending inward from a support surface and sized to receive a key, such as a disc or a coin, which may be inserted in the slot to engage and depress the detent against its biasing spring, sufficient to displace it from the groove of the ring and thus unlocking and allowing the pin to be displaced in its support by sliding therefrom axially. In a modified form, where the supporting rings of a clevis are dimensioned so small that the radially cut slot would tend to weaken them, the ends of the pin may be secured by extra annular rings or washers mounted adjacent to the main supporting rings of the clevis. In the modified form the extra locking rings are sized to receive the internal groove for retaining the tip of the spring biased detent, as well as the slot cut radially into the additional ring, through which the key-like coin is inserted for radial displacement of the detent and thus releasing a locked pin for axial movement. In a second modification the key may be a small plate resiliently supported in a slot between resilient pads in a keyway groove cut in a clevis ring from which the outer end of the key extends, allowing a finger to be inserted to press against the key plate, pressing it against the tip of the detent for unlocking the pin for axial movement.
REFERENCES:
patent: 389335 (1888-09-01), Spear
patent: 1852071 (1932-04-01), Becker
patent: 2209007 (1940-07-01), Stevenson
patent: 2369344 (1945-02-01), Ehmann
patent: 2399581 (1946-04-01), Spooner
patent: 2420256 (1947-05-01), MacKenzie
patent: 2476617 (1949-07-01), Mueller
patent: 2563166 (1951-08-01), Gardner
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