US1258698A

US1258698A - Hoist.

Info

Publication number: US1258698A
Application number: US14314017A
Authority: US
Inventors: Malcolm B Moyer
Original assignee: Individual
Current assignee: Individual
Priority date: 1917-01-18
Filing date: 1917-01-18
Publication date: 1918-03-12
Anticipated expiration: 1935-03-12

Description

M. B. MOYER.

H-OIST.

APPLICATIONJILED MN. 18. I911.

Patented Mar. 12, 1918.

2 SHEETS-SHEET 2 MALCOLM B. IVIOYER, 0F MONTEVIIDEO, MINNESOTA.

Holst i Specification of Letters Patent.

Patented Mar;12, 1918..

Application filed January 18, 1917. Serial No. 143,140.

To all whom it may concern:

Be it known that I, MALCOLM B. Mount, a citizen of the United States, residing at Montevideo, in the county of Chippewa and State of Minnesota, have invented certain new and useful Improvements in Hoists; and I do declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

My invention has for its object to provide a simply constructed yet efficient and durable. hoist having improved means wherebythe load is held against retrograde movement while being raised and whereby it may be gradually or suddenly lowered as occasion may demand.

\Vith the foregoing general object in view, the invention resides in certain novel features of construction and in unique combinations of-parts to be hereinafter fully described and claimed, the descriptive matter being supplemented by the accompanying drawings which constitute a part of this application and in which Figure 1 is a perspective view of the improved hoist in use;

Fig. 2 is an enlarged vertical longitudinal section thereof showing the relation of parts when lowering a load Fig. 3 is a similar view showing the relative positions of parts when the load is being raised;

Fig. 4 is a vertical transverse section on the plane of the line 44 of Fig. 2;

Fig. 5 is a perspective view of the hub of the operating wheel; and

Fig. 6 is a similar View of the collar which cooperates with said hub.

In the drawings above briefly described, the numeral 1 designates an arched casting having bearings at its lower ends in which approximately half the length of a horizontal shaft 2 is rotatably mounted, the other half of said shaft being flattened on opposed sides as shown at 3. Rigidly secured on or formed integrally with the first named half of the shaft 2 is a drum 4 on which a cable, chain or the like 5 is wound, the free end of said cable being provided with a grapple 6 preferably in the form of a hook as shown.

One or more ratchet disks 7 are mounted loosely on the flattened portion of the shaft and permit. said shaft to rotate independently of said disks when required, the edges of said disks having ratchet teeth 8 cooperating with the dog 9 pivoted to an arm 10 which extends laterally. from the upper end of the support 1. A clamp is provided for locking the disks 7 to the shaft, said clamp consisting of a fixed collar 11 and a movable collar 12, both mounted on the flattened portion of said shaft. The collar 11 is disposed at the juncture of the reduced half of the shaft with the other half there- 'of and isnot only'fixed against sliding, but

collar 12, said collar and

wheel having hubs

15 and 16 respectively which are thrown into contact with each other when the wheel 14 is caused to shiftlengthwise on theshaft by means to be explained.

The outer end of the hub 16 is in the form of a helix cooperatingwith a collar 17 which is mounted non-rotatably on the reduced end of the shaft 2; The inner face 'of said collar may be shaped similarly to the outer end of the hub 16 if required, but

in most cases said end of the hub will. co- 1 operate with a lug 18 cast on or rigidly secured to the collar 17. A pair of nuts 19 are threaded on the outer end of the shaft 2 for adjusting the collar 17 along the same and holding said collar in adjusted position.

In operation, the grapple 6 is connected with the load and by means of an endless cable or the like 20, the wheel 14 is turned in one direction. This causes the helical end of the hub 16 to engage the lug 18 so that said hub is shifted upon the shaft into contact with the hub 15 of the collar 12, then serving to force this collar toward 11 to clamp the disks 7 to the shaft. Further rotation of wheel 14 will turn the entire shaft 2 to wind the cable 5 on the drum 4. During this operation, the dog 9 cooperates with the teeth 8 to prevent retrograde movement of the drum and when lowering of the load is required, said disks cooperate with the

collars

11 and 12 and the disk 13 in allowing it to lower slowly or abruptly '14- is turned in a counter-clockwise direction,

t-he'disk 1.3 will. be free to rotate and thus permits rotation of the drum and shaft, to lower the load. Stopping of said Wheel, however, binds the disk 13 between disks 8 and the load is broughtto a standstill.

From the foregoing, taken in connection with the accompanying drawings, it will be observed that although the invention is of extremely simple nature, it will be highly eflicient and durable. For these reasons, the construction shown and described constitutes the preferred form of the hoist, but it is to be understood that within the scope of the invention as claimed, numerous changes may be made without sacrificing the principal objects.

1 claim A hoist comprising a frame having horizontally alined bearings, a horizontal shafthaving a portion of its length received rotatably in said bearings and provided with means for winding a chain or cable by the rotation of the shaft, the other end of said shaft being flattened on opposite sides and threaded at its free end, a fixed collar having an. opening snugly receiving said flattened portion of the shaft, said collar abutting the shoulder at the juncture of the fiattened and round portions of the shaft, a

non-rotatable on the flattened portion ofthe shaft, a dog carried by the frame and cooperating with said ratchet teeth, a control wheel having its hub mounted rotatably and slidably on the flattened portion of the shaft adjacent the outer face of the movable collar, the hub of said control wheelhaving its outer end of helical formation, a thrust collar mounted non-rotatably on the shaft and having means cooperating with the helical end of the hub, and one or more nuts threaded on the free end of the flattened portion of said shaft for holding said thrust collar in operative position.

In testimony whereof I have hereunto set my hand in the presence of two subscribing witnesses.

MALCOLM B. MOYER.

lVitnesses M. SILCOTT, V. H. STUABD.

Goples of this patent may be obtained for five cents each, byaddressihgthe Commissioner of Patents,

Washington, D. 63;

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