US 4,306,710 AGranted

Bar type jack having jaw extensions removably attached thereto

OwnerGeorge W. Vosperinventor

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Abstract

A bar type jack having first and second pipes of suitable length each threaded at at least one end thereof. The first pipe is substantially longer than the second pipe and has a first jaw member slidable therealong for quick positioning and lockable at any position. A mounting bracket having a threaded bore extending from one face thereof to and through an opposite face interconnects the first and second pipes. A second jaw member is slidable along the second pipe and movable by rotating a threaded rod that extends through an additional threaded bore in the bracket. A handle is swingably connected to one end of the threaded rod for use in rotating the rod. Removable jaw attachments are provided and so shaped as to permit jacking one member relative to another when the members to be jacked apart are located closely adjacent one another.

Claims3

Dependent claims

A jack comprising:

(a) a first pipe threaded at one end thereof;
(b) a first jaw member slidable longitudinally along said first pipe for quick positioning and having means to lock the same at any position therealong;
(c) a mounting bracket having first and second threaded bores extending therethrough parallel to and spaced apart from one another;
(d) a second pipe threaded at one end thereof, said first and second pipes being threaded into said first threaded bore respectively from opposite ends thereof;
(e) a second jaw member slidable along said second pipe;
(f) a threaded rod extending through said second threaded bore in the bracket and rotatably connected to said second jaw member to move the same during rotation of the threaded rod, said threaded rod being axially parallel with said pipes;
(g) handle means swingingly connected at one end thereof to one end of said threaded rod for rotating the same, said swingable handle permitting turning said threaded rod avoiding interference from said first pipe, said first and second jaw member each having an article engaging face and wherein said faces are directed away from one another with some selected minimum spacing therebetween;
and
(h) a Z-shaped jaw extension member slidably mountable onto and removable from each of respective ones of said first and second jaw members, said extension members having further article engaging faces directed away from one another with the spacing therebetween being substantially less than said minimum spacing.

6 more elements

Dependencies are inferred from the claim text.