Tire sling for heavy equipment tires

Claim 2

A tire sling for repairing and replacing heavy equipment tires comprising a ring member, a pair of chain pulleys carried by said ring member, each of said chain pulleys including a yoke having a housing on one side, a shaft rotatably carried by said yoke, a chain type sheave mounted on said shaft between the sides of said yoke, a toothed wheel mounted on said shaft within said housing, a lock member slidably mounted within said housing, said lock member having projections on one end which are cooperatively engageable with the teeth of said toothed wheel, means for moving said lock member selectively into and out of engagement with said toothed wheel, and chain means carried by said chain type sheave, whereby said chain type sheave selectively is freely rotatable or locked in fixed position by movement of said lock member.

Claim 3

The structure of claim 1, in which said means for moving said lock member includes a pin means rotatably carried by said lock member, said pin means having an operating handle adapted to selectively engage a lug having a tapered cam surface for selectively rAising and lowering said lock member.

Claim 4

A tire sling for repairing and replacing heavy equipment tires comprising a support member engageable with a lifting mechanism, a pair of chain pulleys slidably mounted on said support member, each of said chain pulleys including a freely rotatable shaft means, yoke means rotatably mounting said shaft means, chain type sheave means mounted on said shaft intermediate the sides of said yoke means, gear means mounted on said shaft exteriorly of said yoke means, a lock member slidably carried by said yoke means substantially in alignment with said gear means, said lock member having portions cooperatively engageable with said gear means, selectively operable means for moving said lock member into and out of engagement with said gear means, and chain means carried by said chain type sheave means, whereby said chain means is selectively locked in fixed position or freely movable through said chain pulleys.

Claim 5

A tire sling for repairing and replacing heavy equipment tires comprising a support member engageable with a lifting mechanism, a pair of chain pulleys slidably mounted on said support member, each of said chain pulleys including a freely rotatable shaft means, yoke means rotatably mounting said shaft means, chain type sheave means mounted on said shaft intermediate the sides of said yoke means, gear means mounted on said shaft exteriorly of said yoke means, a lock member slidably carried by said yoke means substantially in alignment with said gear means, said lock member having portions cooperatively engageable with said gear means, selectively operable means for moving said lock member into and out of engagement with said gear means, and chain means carried by said chain type sheave means, whereby said chain means is selectively locked in fixed position or freely movable through said chain pulleys.

Claim 6

The structure of claim 3, in which said means for moving said lock member includes pin means rotatably connected to said lock member and having an operating portion extending outwardly thereof, lug means carried by said yoke means and having an inclined surface engageable by said pin-operating means, whereby movement of said operating means up said inclined surface will move said lock member out of engagement with said gear means.

Claim 7

The structure of claim 4, including spring means for moving said lock member into cooperative engagement with said gear means when said operating means is removed from said tapered surface.

Claim 8

A tire sling for repairing and replacing heavy equipment tires comprising a ring member, a pair of chain pulleys carried by said ring member, each of said chain pulleys including a yoke having a shaft rotatably mounted therein, a chain type sheave mounted on said shaft between the sides of said yoke, at least one end of said shaft extending outwardly beyond said yoke, locking pin means mounted on said yoke in alignment with said outwardly extending portion of said shaft, lock means on said shaft selectively engageable with said locking pin means to permit or prevent free rotation of said shaft, resilient means normally urging said locking pin means toward engagement with the lock means on said shaft, and chain means carried by said chain type sheave and adapted to be placed about a heavy equipment tire, whereby said ring member can be raised to support a heavy duty tire and said chain type sheaves are selectively freely rotatable or locked in fixed position by movement of said lock pin means.

Claim 9

A tire sling for repairing and replacing heavy equipment tires comprising a ring member, a pair of chain pulleys carried by said ring member, each of said chain pulleys including a yoke having a shaft rotatably mounted therein, a chain type sheave mounted on said shaft between the sides of said yoke, at least one end of said shaft extending outwardly beyond said yoke, locking pin means mounted on said yoke in alignment with said outwardly extending portion of said shaft, lock means on said shaft selectively engageable with said locking pin means to permit or prevent free rotation of said shaft, resilient means normally urging said locking pin means toward engagement with the lock means on said shaft, and chain means carried by said chain type sheave and adapted to be placed about a heavy equipment tire, whereby said ring member can be raised to support a heavy duty tire and said chain type sheaves are selectively freely rotatable or locked in fixed position by movement of said lock pin means.

Claim 10

The structure of claim 6 in which said shaft lock means includes an opening of a size to receive said locking pin.

Claim 11

The structure of claim 6 in which said shaft lock means includes gear means mounted on the outwardly extending portion of said shaft, and said locking pin includes at least one projection cooperatively engageable with said gear means.