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US 4,111,080 AGranted
Staple fastening tool
AssigneeFlexible Steel Lacing Company
InventorWinston C. Pray
Life of this patent
Estimating the term…
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AssigneeFlexible Steel Lacing Company
InventorWinston C. Pray
Estimating the term…
An applicator apparatus for securing belt fasteners to belt ends by staples comprises a staple guide block means having resiliently biased pin means for exerting a clamping force to hold the belt end against shifting during the driving of the staples through the belt and the clinching of the ends of the staples against the belt fasteners. The preferred applicator is formed to accommodate various widths of belts by releasably securing a series of separate applicator units each having a staple guide block and secured to a base plate in predetermined and aligned portions thereon. An adjustable cam lever allows shifting of the staple guide block means to accommodate different thicknesses of belts. A gauge pin is eliminated by having shoulder surfaces on the staple guide block means hold the belt fasteners with their hinge pin receiving ends in alignment with one another.
An applicator apparatus for securing hinge fasteners having alternating ribs to the end of a belt by staples, said applicator apparatus comprising an anvil means having an anvil surface for deflecting lower free ends of the staples to clinch the staples to the underside of the belt fasteners, a staple guide block means mounted over said anvil means with a portion thereof spaced from said anvil surface to admit a belt end therebetween, means mounting said staple guide block means for relative movement with respect to said anvil means between an open position admitting the belt end and a closed position for holding the belt for staple application, means for shifting said staple guide block means, means in said guide block defining vertically extending open shafts for receiving staples to be driven through said belt fasteners and the belt end, means for aligning the belt fasteners relative to said staple guide block means and to said anvil surfaces and including alternating slots to matingly receive alternating ribs in the hinge fastener, depending means on the outer edge of said guide block means for abutting the free ends of said belt fastener legs to hold said ribs of said fasteners in said slots during a stapling operation, and a resilient clamping means associated with said staple guide block means and said anvil means and engaging the belt end and applying a holding force thereto to resist shifting of the belt end during driving of the staples through the belt and the clinching of the staple ends.
An apparatus for the attachment of hinge fasteners to the ends of flexible belts by the insertion of staples through holes provided in said fasteners and through the belt thickness, comprising an anvil means having an impact surface including an impact portion and an orienting portion, an elongated lock pin having an attached end and an extended end, said attached end being attached to and projecting upwardly from said orienting portion of said anvil surface, a cam lever pivotally attached to said extended end of said lock pin, guide block means slidably mounted upon said lock pin between said anvil means and said cam lever whereby said guide means is movable between open and closed positions relative to said anvil means, said cam lever being positioned and shaped to selectively urge said guide block toward said anvil surface, said guide block means including a positioning portion having an exposed surface and an oppositely disposed inner surface and defining a plurality of receiving shafts therethrough between said exposed and inner surfaces, means orienting said guide block with respect to said anvil means with said inner surface of said guide block facing said impact portion of said anvil surface to co-operatively define a channel therebetween that is adapted to withdrawably receive a fastener and belt therein when said guide block is in an open position and means aligning said fasteners and holding the same against rearward movement and for retaining said fastener and belt in an aligned position with respect to said staple shafts when said guide block is in a closed position, driver means slidably and withdrawably received within said staple shafts, a retainer lip depending from said positioning portion of said guide block into said channel and toward said anvil surface to engage and hold the belt fastener against forward movement, pin means mounted in said retainer lip and depending beyond said retainer lip into said channel, and means resiliently biasing said pin toward a belt disposed in said channel to engage said belt and restrain the same against movement out of said channel when said guide block is in its closed position.
An applicator apparatus movable along a belt end to secure a row of aligned hinge belt fasteners to the belt end with staples, said applicator apparatus comprising an anvil means having a surface for deflecting the lower free ends of the staples to clinch the staples to the undersides of the belt fasteners, a staple guide block means mounted over said anvil means with a portion spaced from said anvil surface to admit a belt end and a plurality of belt fasteners, means mounting said staple guide block means for relative movement with respect to said anvil means between an open position admitting the belt end and a closed position for holding the belt for staple application, means in said guide block means defining openings for receiving staples and for guiding the staples into openings in the belt fasteners, means for holding belt fasteners against rearward movement and against forward movement and against lateral movement during staple application, and at least two separated resilient clamping means associated with said guide block means and said anvil means and engaging said belt at two locations and holding said belt to resist shifting of said belt or said applicator apparatus as would misalign hinge pin receiving openings in said hinge belt fasteners.
Dependencies are inferred from the claim text.