Implements or apparatus for applying pushing or pulling force – Resilient tire-casing spreaders
Patent
1975-08-22
1976-08-31
Smith, Al Lawrence
Implements or apparatus for applying pushing or pulling force
Resilient tire-casing spreaders
254 62, A47G 2704
Patent
active
039776514
ABSTRACT:
A carpet tightening device enabling a suitable tightening force to be applied to a portion of a carpet without requiring substantial force to be delivered by the operator's knee, comprising an elongate housing having a knee pad mounted at its rear end, and a toothed carpet-engaging member mounted at its front end. The housing member is hollow and contains an elongate compression spring therein. An elongate handle is pivotally mounted atop the housing, and connected so as to enable an operator to apply a substantial compressive force to the spring. A forward portion of the spring is, on occasion of spring release, brought into contact with a portion of the carpet-engaging member disposed inside the housing, thus to cause the toothed portion of the carpet-engaging member to move forward with considerable force to accomplish a carpet tightening operation. Latch means under the control of the operator makes it possible for the spring to be maintained in a compressed condition until such time as the operator decides to release same, thus to allow the forward end of the spring to move into forceful contact with the aforementioned portion of the carpet engaging member disposed inside the housing. Advantageously, the handle is disposed so as to be moved in the carpet-engaging direction as the spring is being compressed, and a scale is provided on my device, revealing to the operator at a glance, the degree of compression of the spring. The latch arrangement enables the operator to release the spring, to bring about carpet-tightening, at whatever force level he deems appropriate at a given instance.
REFERENCES:
patent: 3022979 (1962-02-01), Dahlke
patent: 3572800 (1971-03-01), Graziano
patent: 3917225 (1975-11-01), Payson
Renfro Julian C.
Smith Al Lawrence
Watson Robert C.
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