Mechanical guns and projectors – Element – For archery projector
Patent
1991-01-22
1992-06-30
Reese, Randolph A.
Mechanical guns and projectors
Element
For archery projector
124 231, 24 711, F41B 500
Patent
active
051253895
ABSTRACT:
A tensioning apparatus for tensioning the limbs of a compound bow to enable the bow string to be removed from and installed onto the compound bow cable and/or to replace the bow cable and work on the bow comprises an elongate, flexible, non-extensible tensioning cable; retainers for detachably connecting end regions of the tensioning cable to distal ends of the limbs of a compound bow so that the tensioning cable extends therebetween, and a screwjack and three cable guides for forming an open loop of variable size in the tensioning cable. The screwjack is connected for moving at least one of the guides relative to at least two others of the guides to enable the size of the open loop to be increased or decreased thereby correspondingly decreasing or increasing the effective length of the tensioning cable, the decreasing of the effective length of the tensioning cable pulling the distal ends of the bow limbs toward one another so that a bow string connected between ends of the bow cable is slackened for removal or so that a bow string can be connected between the ends of the bow cable. Preferably at least one end region of the tensioning cable and retainer associated therewith are formed so that the retainer can be connected at different points along the cable end region so as to enable varying the effective length of the tensioning cable according to the span between the distal ends of the compound bow limbs.
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Hackler Walter A.
Reese Randolph A.
Thompson Jeffrey L.
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