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US 6,782,591 B1Granted
Punch press tool
OwnerHerbert F. Hoffmaninventor
Life of this patent
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OwnerHerbert F. Hoffmaninventor
Estimating the term…
The punch press tool efficiently punches out a sheared sickle blade section bolt or a bolt from which the retaining nut has been removed in an implement using a reciprocating sickle bar. The punch press tool includes an elongated handle having a pair of rigidly connected parallel links pivotally connected to one end thereof to straddle a sickle bar. A removable transverse pin is engaged with end portions of the links in spaced relation to the end of the handle and oriented below the sickle bar when the handle and attached ends of the links are positioned above the sickle bar. The handle includes a radially extending heat treated projecting pointed pin spaced from the pivot axis of the handle to downwardly engage the end of a broken bolt in a sickle bar to force the bolt downwardly out of the sickle bar when the handle is pivoted toward the sickle bar. The handle also includes a protruding surface area on an edge thereof to engage the round head of a new shouldered bolt and upwardly forcing it into the sickle bar opening with the round head of the bolt engaging flush with the bottom of the sickle bar.
A punch press tool for removing and replacing retaining fasteners securing sickle blade sections to a sickle bar, said tool comprising a pair of spaced links for straddling a sickle bar and extending above or below the sickle-bar, a removable transverse pin inserted through said links at one end thereof in adjacent relation to one surface of said sickle bar, an elongated handle pivotally connected to said links at another end thereof in adjacent relation to another surface of said sickle bar, a fastener engaging member on said pivotal handle in spaced relation to the pivotal connection between said handle and links for engaging and exerting force on said sickle blade section fasteners to remove and replace said fasteners.
A hand tool for removing and replacing blade sections on a reciprocal sickle bar comprising an elongate handle having a structure pivotally connected at one end for engagement with a sickle bar on a surface opposite to the position of the handle in relation to the sickle bar, a first and a second projection means on said handle being on opposite sides of a pivot axis of the handle and in spaced relation to the pivot axis to engage a blade section fastener by said first projection means to exert a downward force on the fastener to downwardly remove the fastener when the handle is located above the sickle bar and to engage a new fastener by said second projection means to exert an upward force on said new fastener to install said new fastener when the handle is located below the sickle bar.
A hand tool for removing and replacing blade sections on a reciprocal sickle bar comprising an elongate handle having a structure pivotally connected at one end for engagement with a sickle bar on a surface opposite to the position of the handle in relation to the sickle bar, projection means on said handle in spaced relation to a pivot axis of the handle to engage a blade section fastener to exert a downward force on the fastener to downwardly remove the fastener when the handle is located above the sickle bar and exert an upward force on a new fastener to install said new fastener when the handle is located below the sickle bar, wherein said structure pivotally connected at one end of said handle includes a pair of rigidly spaced parallel links, one end of said links being pivotally connected to one end of said handle and oriented in straddling relation to a sickle bar, a transverse pin removably inserted through said links at another end of said links remote from the pivotal connection between the handle and links to enable the handle and removable transverse pin to be positioned selectively above and below the sickle bar for removing and replacing blade section retaining bolts.
A hand tool for removing or replacing a fastener in a support member comprising an elongated handle member having a structure pivotally connected at one end for engagement with the support member on a surface opposite to the position of the handle member in relation to the support member, a first and a second projection means on said handle member in spaced relation to a pivot axis of the handle member to engage the fastener in an opening of the support member by said first projection means to exert a downward force on the fastener to downwardly remove the fastener from the opening when the handle is located above the support member and to engage a new fastener by said second projection means to exert an upward force on said new fastener to install said new fastener when the handle member is located below the support member.
Dependencies are inferred from the claim text.