US977613A

US977613A - Pulley-block.

Info

Publication number: US977613A
Application number: US55118010A
Authority: US
Inventors: John E Gilchrist
Original assignee: Individual
Current assignee: Individual
Priority date: 1910-03-23
Filing date: 1910-03-23
Publication date: 1910-12-06
Anticipated expiration: 1927-12-06

Description

To all whom fit may concern:

UNrrED s'friiiljns PATENT oFF-ron. y

JOHN neinonmsm, or soufrn BEND, WASHINGTON.

PULLEY-nnocx.

Be it known that I, JOHN E. GnioHnIsT, a citizen of the United States, residing at South Bend, in the county of Pacific and State of Washington, have invented a new.- and useful Pulley-Block, of which the following is a specication.

The pulley block forming the subject matter of this application may be em loyedunder a variety of conditions whic willl readily suggest themselves to a ig' er? However, it may be explainedthat 1n og-v ging operations, the line-whereby the lo` are dragged from the Woods to the saw mi or to the drive, is returned over a series o pulleys, commonly suspended at a considerable elevation. These return pulleys are in constant rotation, and on thisaccount fre-4 quently. runhot. -Owing toftheirV elevatedv positions, it is difcult to oil them, the-oiling process commonly being deferred until it is often found that the pulley has run hot and bound. g y' l It is thev object of this invention to -provide a pulley which will contain a considerable quantity of lubricant, and feed the L, bearing'pin of the same, automatically, and slowly, upon `the ulley. A Another object of) the invention is to providea pulley the component parts of which are assembled in a novel and improved manner. v Another object of the invention is to plrovide .a pulley, the bearing pin of whic is adequately protected against dirt and dust.

Another object of the invention is to provide a novel means for suspending the pulle yWith the above and other objects in View, the invention consists in the novel construction and arrangement of parts hereinafter' described, delineated in the drawings andi claimed, it being understood that changes, falling within the scope of what is claimed, may be made, withoutdeparting from the spirit of the invention.

Similar numerals of reference are employed to denote correspondinoarts throughout the several figures of tle rawin s. i

n the accompanying drawings,-Figure 1` is a side elevation, parts being broken away ;f Fig. 2 is a transverse section; Fig. 3 is a specincauovof amusement. 'Patented Dec, 6, 19,10 Appnoaeion'mea umn es', 1910. serial Nq. 551180.

top plan of the showing of Fig. ing removed; and'Fig. l is a spective of the bearing pin.

The pulley bloc@ now tb-be described, comprises arallel'des. 1 and 2. The side 1 is provi ed with an outstanding portion 3, the side being thus enlarged so that a chamber 4 may be formed in the interior thereof. In the upper face of the outstandin portion 3 of the side 1 is, as seen to'best adgvantage -in Fig. 3, an inlet 5 communieating with thechamberfl, and constituting -a meanswhereby a lubricant may be\i ntro duced into the chamber. The sides 1 and 2 are provided, upon their upper edges, with outstanding projections 6, oppositely disposed,` and adapted lto regis-v ter between lugs 7, outstanding laterally from that ortion of the device which heref inafter wil be denominated the top and denoted' by the .numeral 8. Through the elements Gand 7, pins 22 are extended,'the l pins being maintained'in place by means of cotter pins 23, or. the like, the 'construction being such that the `sides 1 and. 2 are hingedly connected with the top 8, by means 2 detail perpast the shank of the hook. 'Y By means of `the `construction last above pointed out, the pulley blockmay be mounted .for'swiveled construction,` the form 'ven to t e'hook 15 being such that the hoo the-su port when the-line which 1s moving throu the pulley blockis'zslackened, or 'jerk violent y. i' y In the "adjacent faces of the sides 1 and12 are annular recesses 17. A At the centers of the pins y22. Outstanding from the topmovement upon av support'of any`desiredf lthese recesses 17, are' threadedopenings-18,

parts bea link 14, with which vis lconnected a hook f 15, the point 16 of'which isv carriedY around will not' ump from y i roo' los

.Fig 4, is

extended into the chamber' 4, at the lower gagement in the openings-18 and 19, the

ends 25 defining shoulders 26 in the bearing pin. The sheave 20 is adapted to be journaled for rotation upon the bearing pin 24; and this sheave 20 is provided upon its outer faces, with bosses 21adapted to fit closely, yet antifrictionally, in the recesses 17 of the sides 1 and 2. The shoulders 26 upon the pin 24, prevent the sides 1 and 2 from bearing against the sheave 20.

n the bearing pin 24, there is an axial opening 27, communicating at one end with the chamber 4. Adjacent the middle of the pin 24, this axial opening 27 is extended through the side wall of the pin, and shown at 28. .A packing of some sort, denoted by the numeral 29, and preferably-'a piece of cotton wicking, is mounted in the axial opening 27 of the bearing pin. A

In practical operation, the lubricant is iiitroduced into the chamber 4 through the inlet 5. Theflubricant will find its way slowly through the axial openino' 27 of the bearing pin 24, and, passing out tirough the portion 28 of the opening in the pin, will serve to lubricate the sheave 20 as the same rotates upon the pin. The presence of the packing 29 in the interior of the bearing pin 24, serves to regulate the flow of the lubricant through the pin. Presupposing that the sides 1 and 2 are separated from the top 8 and the bearing pin 24, the operation-of the device is as follows. The pin -24 is threadf ed into one of the openings in the sides; say ist@ the opening 18 in the slee i. vThe sheave 20 is then mounted uponthepin 24 and the side 2 is rotated upon the opposite threaded end of the pin until both of the sides areq brought into abutment with the shoulders 26 in the pin; or nearly into abut ment therewith. The projections 6 upon the 'sides 1 and 2 are brought into alinement transversely of the' pulley block, and the top 8 is mounted in place upon the sides 1 and 2, thelugs 7 of the top 8 inclosing the projections 6 of the sides. The pins 22are mounted in place, and the Cotter pins 23 are inserted through vthe pins 22. Obviously, when the sides 1 and 2are separated, the top 8 need not be entirely removed from both of the sides. But one of the pins 22 may be removed, the top 8 being swung back pivotally upon the other pin 22 to permit the side from which the lugs 7 have thus been freed, to be rotated. l

It willbe seen that the construction of the device is such, that, although the chamber 4 may be entirely filled with. lubricant, the top may be removed, and the 8 may be unshackled from the side 2, permitting the said side to be rotated free from the bearing pin 24, whereupon the sheave ulley block repaired, without materially c anging the osition of the oil holding side 1 of the pulley block oremptying the chamber 4 of its contents.

' The parts 21 of the sheave 20 lit closely in the recesses 17 of the sides of the block, and the bearing pin 24 is so housed and protected that dirt will be prevented from accumulating about the bearing of the sheave, to interfere with the rotation thereof.` Having thus described the invention, wh'at isclaimed is i l. A pulley block consisting of sides,A one of which is provided with an interio'r oil chamber 4havingV an inlet adjacent the top of the block; a bearing pin terminallymounted in the sides and having an axial opening communicating' with the chamber and extended through the side wall of they pin; and fa' sheave journaled for rotation upon the p in between the sides.

2. A pulley block consisting of se arable sides; a top pivoted into one of said) sides; a bearing pin terminallythreaded to engage the sides; a sheave journaled for rotation upon the pin; and means for connectingtthe top with the other of said sides.

3. A pulley'block consistin of separable sides; a bearin pin terminaly engage the si es; a sheave journaled for rotation upon the pin; the in being provided with shoulders adaptedp to prevent the sides from binding against the sheave; a

threaded to top terminally provided with elements adapted to interlock with` the sides; and

means forfconnectin-g the top with the sides.l

4. A pulley block consisting of parallel- -sides having annular recesses in their ad .jacent faces, one of the sides being provided With an interior oil chamber having an inlet adjacent the top of the block; a bearing pin terminally threaded to engage the sides inthe recessed portions thereof, the pin having an axial opening communicating with the chamber and extended through theA side Wall of the pin; a sheave journaled for rotation upon the pin and having oppositelyA disposed bosses adapted to fit closely but anti-frictionally in the recesses, the pin having shoulders to engage the sides to prevent the same from binding'upon. the sheave; and a top removably connecting the sides above the sheave.

5. A pulley block consisting of parallel sides, one of which is rovided with an interior oil chamber having an inlet adjacent the top of the block; there being a threaded vopening in the Wall of said side communieating with thechamber adjacent the bottom thereof, and an opposilely disposed threaded opening in the other of said sides;

iis

a bearing pin terminally threaded to engage the threaded openings, the pin having an axial opening communicating with the chamber and extended through the side Wall of the pin; a sheave'journaled for rotation upon the pin; the sides having lateral projections at their upper ends; a top having spaced lugs between Which the projections et the sides are adapted to t;`and removfA able means for uniting the projections with 1o the lugs.

In testimony that I claim the. foregoing as my own, l have hereto aixed my signature 1n the presence of tWo witnesses.

JOHN E.` GILCHRIST. Witnesses C. A.' STOPBELMAN,' N. W. BAKER.