US 1441641 A
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Description (OCR text may contain errors)
Jem. 9, 1923.
c. W. mowsom PBESERVlNG BECEP'I'ACLE.
FILED MN. 29, 1921.
AT T QHNEYS the lo'we' erm portions 20 lengthwise, and exert an eective clamping pressure, through the jaws, on thecover, in addition tn the pressure caused by the resilience of the jaws.
When the clamps are being forcedto their closed positions, thejaws firstslide. across.
pivotally anchored to thereceptacle, upper armwportions extending inward at an angle with the said lower portions, and curved to form jaws, adapted :to extend across said ridge and bear on the cover at thel innerside y of the ridge when the clamps are closed, and a neck connecting the upper a'rin portlons, the lower arm portions being composed .1n
part o'f spring loops, which yieldingiy oon-- tract said portions lengthwise and constitute reinforcing springs adapted to exert an effectiveciamping pressure, through the jaws, on the cover, in addition to the pressure caused by the resilience of the yaws, said jaws being adapted to siide across the ridge when the clamps are being forced to their closed positions, and to. spring downward to chimp the cover and engagethe inner side of the ridge when Athe clumps are fully closed. i
n testimony whereof i have affixed my signature.
CHARLES WILLIAM THOMPSON,