US1316181A - Planoqiial m l o - Google Patents

Description

W. M. PHARES.

HOIST.

APPLICATION FILED MAR. 13. IBM).

Patented Sept. 16, 1919.

INVENTDI? W. M FHA/V55 mvrrnn STATES PATENT clarion.

WALTER M. PHARES, OF SAN FRANCISCO, CALIFORNIA, ASSIGNOR TO DEAL SCOTT PHARES, OF SAN FRANCISCO, CALIFORNIA.

HOIST.

Application filed March 13, 1919.

To all whom it may concern:

Be it known that I, IVALTER M. PHARES, a citizen of the United States, residing at San F rancisco, in the county of San Francisco and State of California, have invented new and useful Improvements in Hoists, of which the following is a specification.

The object of the present invention is to provide a simple and cheap hoist for raising and transporting heavy objects, which can be operated at comparatively small expense.

In the accompanying drawing, Figure 1 is a side view of my improved hoist; Fig. 2 is a plan view thereof; Fig. 3 is an enlarged vertical section of the pivot of the hoist.

Referring to the drawing, 1 indicates a car mounted upon rollers 2, which can run upon rails 3 of a track, and having a hollow spherical metal top or fulcrum 41. Extending over said top is a beam 6, which may, for instance, be composed of three bars 7, of square cross section, bound together at suitable intervals by straps 8. Secured to said beam 6 directly over said top 4: is a post 9, the top of said post being tied to the ends of the beam by a tie-rod 10 extending in a groove 11 in the top of the post and attached at its ends to straps 12 around the ends of the beam 6. From the strap 12 around. the end of the longer arm 13 of the beam depends a loop 14 from which is suspended a rope or cable 16 which is used to encircle any object, such as a block of granite, or the like, to be raised and transported to another position. Upon the end of the shorter arm 17, of the beam is secured a platform 18 which is of a width gradually increasing from its inner end adjacent to the fulcrum 4 to the outer end adjacent to the outer end of the beam. The weight of this platform Specification of Letters Patent.

Patented Sept. 16, 1919.

Serial No. 282,329.

a round head 20 permitting the beam to rock upon said round fulcrum while retaining it in contact therewith.

Vvhen it is desired to transport a heavy object, such as a block of granite, from the place where it lies to another place, as a truck or car, the cable or rope 16 is first secured around said block and then the operator places upon the platform in succession a sufiicient number of bags 21 of sand to counterbalance the weight of the block so that both said block and said platform are suspended in the air, as shown in Fig. 1.

The operator then moves the beam horizontally upon the fulcrum, and, if necessary, adds further weight to the platform to raise the block to a sul'iicient height to deposit it in the truck or car in which it is to be placed and then swings said beam until said block is over said truck or car. He then allows the block to descend, either by applying manual force to either end of the beam or by removing some of the weight on the shorter arm of the beam. The cable is then removed from the block and the beam swung back again out of the way of the truck or car and is ready for another operation.

The advantage of the device is that it is comparatively simple in construction, re

quires but few parts, and is also simple and inexpensive in operation, since it requires only manual labor to transport very heavy objects, weighing a ton or more.

In a hoist, the combination of a suitable support having a hollow spherical fulcrum, a beam supported on said fulcrum, its under surface having a spherical cavity fitting closely on said spherical fulcrum, a bolt tying the beam to the fulcrum and extending through a hole in the'top of the fulcrum and having a round head within the fulcrum, said bolt being secured rigidly with reference to the beam, but being movable within the fulcrum, means suspended from the outer end of one arm of said beam for supporting an object to 'be transported thereby, and a platform for counterbalancing weights supported upon the other arm of said beam.

WALTER M. PHARES.

copies of this patent may be obtained for five cents each, by addressing the "Commissioner of Patents, Washington, D. G.

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