US512258A

US512258A - Hoisting-machine

Info

Publication number: US512258A
Authority: US
Publication date: 1894-01-02
Anticipated expiration: 1911-01-02

Description

(No Model.)

G. G. MURRBY. HOISTING MACHINE.

Alfo. 512,258. 'Patented Jan. 2, 1894.

UNiTE'TATEs Arnia GEORGE C. MURREY, OF SEATTLE, WASHINGTON.

HOISTING-*NlACI-HNE.

SPECIFICATION, forming part of Letters Patent No. 512,258, dated January 2, 1894.

Application filed September 22, 1892. Renewed December 12, 1893. Serial No. l193,506. (No model.)

.To all whom, it may concern:

Be it known that I, GEORGE C. MURREY, a cltizen of theUnited States, residing at Seattle, in the county of King and State of Vashington, have invented certain new and useful lmprovements in Hoisting-Machines; 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 artto which it appertainsto make and use the same, reference being had to the accompanying drawings, and to the letters of reference marked thereon, which form a part of this specification.

This invention relates to an improvement inthat class of hoisting machines usedl to operate pile drivers and similar machinery.

My object is to produce a device which may be quickly started andstopped and one which will occupyr as small a space as possible.

To this end myinvention consists of certain novel features and combinations of parts more fully described hereinafter and pointed out in the claim.

Referring to the accompanying drawings: Figure 1 represents a side elevation; Fig. 2 a longitudinal section; Fig. 3 a detail of the drum shifting mechanism.

The reference letter ct represents the foundation timbers to which the bed plate b, of

my machine is secured by bolts, pins, or in any other convenient manner. Arising from the bed plate b, are two pedestals or standards c and c thoroughly ribbed to insure strength and having the shaft d, immovably keyed in the openings or boxes e, formed midway their length. The shaft d has mounted on it the hoisting drum f, and gear wheels g and h, all of which revolve loosely thereon. Journaled in the highest portion of thestandard c and in the overhanging end of the standard c, is a shaft c' to which is imparted a continuous rotary motion by means of the crank disk i and wrist pin 2 to which pin the engine pitman is connected. Mounted on the shaft 1I are two pinions 3 and 4 the former, is, being mounted between the shaft bearings and theA pinion 4 being fixed to that end of the shaft which projects beyond the bearing in the Standard c.

The pinion 4 is adapted to mesh with the internal gear g which is as hereinbefore stated mounted loosely on the shaft (Z, and heldinis an annular friction platey` which is adapted to operatein conjunction with the slightly concave face j of the hoisting drum f.

The spur gear h is as the internal gear mounted loosely on the shaft d, and held ina Iixed position by means of the set collars h2, one on either side. This gear meshes with the pinion 3 and by its means it is given a continuous rotary movement such movement necessarily being in a direction opposite to that of the internal gear g. The gear h, is also provided with africtiou face h similar to that on the gear g and it is embraced by the concave end h2 of the hoisting drum.

Formed on one end of the hoisting drum, preferably the right hand end, is a countersunk recess 7c into which fits a ring lo of a size equal to that of the-recess. Securely fastened over the opening and ring is aplate or cap Z2, having a central opening to admit the shaft d. The ring Zo has securely fastened therein the bar 7a2-formed with an opening 7c3 p in its center. This bar is adaptedto reciprocate longitudinally in the elongated opening Z, formed in the shaft CZ, and is secured in the ring '7c' by inserting said opening when the ring is in place and then moving the ring up and over it, whereupon it may be fastened by means of the screws Z. Formed in the center of the shaft eZ and extending longitudinally therewith is a passage rml which projects up into the shaft until it comes up with the opening Z. In this passage is located the clutch operatin g red or bar n, which extends through the same and is connected to the bar k2 by means of the opening les formed therein. The remaining end of the bar n, projects out beyond the shaft d, and is connected to the operating lever o.

To use my improved machine the pinion shaft t' is set in operation which will in turn cause the gears g and h, owing to their peculiar arrangement, to revolve in opposite directions as explained before. The drum j", assuming that it is in the position shown by the drawings, will however remain at a stand still, until it is moved laterally on the shaft CZ, when its concave end will come into en- IOC gagement with the corresponding convex face of the gear g or h, as the case may be, for example say g. This movement will cause the drum to revolve in the direction that the gear g is revolving, as the two /are by means of the clutch clamped together. To reverse the drum it is shifted on its shaft to the gear h, to which it will be connected by means of the clutch before described. The drum is stopped by moving it such a distance from both of the gears g and h, that it will engage neither of them at which point it necessarily remains stationary. Y

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is-

In a hoisting machine, the combination of a stationary shaft, a drum mounted thereon, a gear wheel mounted vat cach end of the drum, friction plates fixed to the gears, on the side adjacent to the drum a revolving shaft havlng plnlons mounted thereonand meshing ring, a bar extending through the first named passage and connected to the ring, and an operating lever attached to the bar, substantially as described.

In testimony whereof I aflix my signature in presence of two witnesses.

GEORGE C. MURREY.

Witnesses:

GEO. H. KING, ARTHUR I. FoNDA.