US922105A - Hoisting apparatus. - Google Patents

Description

E. N. DREW.

HOISTING APPARATUS.

APPLIUATION FILED 001214, 190B.

Patented May 18, 1909.

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` citizen of 'the United -ratus particularlyr ada UNITED STATES PATENT OFFICE.

EDWARD N. DREW, OF SOUTH CHICAGO, ILLINOIS, ASBIGNOR OF ONETHIRD TO AXEL E. ANDERSON AND oNE-'rmnn To PATRICK T.

Hors'rnm APPARATUS.

CHICAGO, ILLINOIS.

To all whom tt may concern:

Be it known that I EDWARD N. Dnnw,'a

a resident of South Chicago, county of Cook, State of' Illinois, have invented certain new and useful Im4 rovements in Hoisting Apparatus, of whic the following is a specification.

The main object of this invention is to provide an improved form of' hoisting appated forloading, unloading and iling rai s,-- lumber and other materials in the form of' bars of substantially uniform length. This Objectis accomplished by the device shownin the accompanying drawings, in which:

Figure Lis a side elevation of ahoisting apparatus constructed according to this invention. Fig.,2 is a detail of the yoke which connects the su porting cables. Fig. 3 is a detail showing t e manner in-which the load supporting bars engage the load. Fig. 4 isa perspective view of theap aratuswith its cad. Fig. 5 is a section t rough a pile of rails, illustrating the usual ing them. r

In the form shown in the drawings,.the load engaging members are in the form of angle bars, each having at each of its ends a staple 2extending transversely into the space between the vertical shoulder or flange 3 and the horizontal flange 4 of the respective bar and serving to connect it with a suspending cable 5. The cables are provided with loops 6 at their lower ends or are athen Wise arranged so as to have hinged connection 'with the bars be turned on their points-of suspension a out an imaginaryv axis lying along the bar and in the angle between the vertical and horizontal flanges thereof. The cables 5 are of equal length, and each is rovided with a loo 7 at lts upper end.. he

i 1of t e cables 5 are connected together by means of a yoke 8 which consists of a pair ,of bars connected together by four bolts-9 and 10. `'lhe bolts 10 pass throu li the eyes 7 of the cables and are brace 'by means of a 'strut 11 located betweenthe bars which is provided with an eye ateach end, which eyes engpge the bolts mounted. on 'the bolts 10 between the'points of attac ment of the cables, as illustrated in 2. Clevlses 12 9serve as spreaders tates of America, and.

1 1n such manner that' Bpeoication .et Letters Patent. appncaaon ined october 14, 190s.

,opposite ends to under the same DREW, BOTH OF SOUTH Patented Hay 18, 1909. Serial No. 457,685.

for the side bars of the yoke, and are connectedwith a which the yoke is `supported from a rin 14 so as to permit of supporting the w ole apparatus from the hook 15 of a crane or other hoist. p ,i

.Ineorder to spacethe 'bars 1 the desired distance apart, the cables 5are spread apart at a oint above the bars 1 by means of sprea ers 16 which are preferably. made in two parts, one telescoping the other so as to be adjustable to different lengths. The

pins 17 which extend through registering apertures in the telescoping1 parts of' `the` of t e spreaders. The ends 18 spreaders 16 are shaped so as to loosely engage the ,cables 5, and are supported by `shoulders 19. In the form shown, the ends of the spreaders are forked, and the cables are confined in the forks by cross-pieces which are secured by nuts.

The o eration of the device shown is as followsfy en the device is not loaded, the parts of the cables 5 which are below the spreaders 16 han downward, and the bars 1 hangin the ositlon shown by dotted lines in Fig. l. ven the device issupporti i a load, as, for instance, a row of rails 20, Ilagen the lower flange 4 of each bar 1 is placed under the load as in Fig. 1, and the vertical flangev 3 engages the ends of the rails. The vertical flanges 3 resist, the inward thrust `of the vbars 1 under 'the strain of the load upon the cables 5, and on account of the mannerin which the cables 5 are connected to the bars 1, there is no `danger of the bars 1 becoming tilted and dropping the load. The s `:readers 16 should, of course, be so ad juste as to permit the cables 5 to straighten out when under load'. The spreaders 16 may' be. light, as their strength need only be sufiicient to spread the bars 1 apart when unloaded.,

Rails are usually. stacked in the manner shown in Fig. 5. Cross-strips 21 support each 'row of rails near its ends and separate the successive rows, the rails in each row being alternately set upright and inverted so as to occupy a ymi-nimum amount of space. connecting the hoisting apparatus to the load, men are placed at opposite ends of the pile, and it is simpl necessa `for the men at sllp .the horizontal flanges 4 row of rails. When a strain pair of cables 13 by means of l length of the spreaders 16 is determined by out departing from the spirit'of this inventime as compared with that ref uired where is put upon the apparatus b hoisting the hook l5, the entire row of rai s which is engaged by the bars 1 will be su ported in the manner shown in Fig` l. A ter depositing the load, the bars 1 may be readily disenga ed when the cables 51 become slack.

his apparatus results in a great saving of the usual slings are first passe around the load, and it also has the advantage of lifting the load without disturbing the relation of the rails to each other, so that it saves the time of restacking them. If the rails are stacked so that their ends are uneven, the inward thrust of the bars 1 due to the first ull upon the cables pushes the pro'ecting ars inward and lines up the load efore it is lifted. The only limit to the capacit bf the apparatus is that which is determine( 4by the strength of its parts, since any number of rows of rails may be supported, each row serving as a platform upon which the successive row rests.

The device shown in the drawings is a preferred embodiment of this invention, but it `vill be readilv seen that numerous details fof the construction shown may be altered withtion.

1 The combination of.a yo'ke, two pairs of cables depending therefrom, and a pair of bars, each suspended in horizontal position by one of said pairs of cables and each comprising a horizontal flan e adapted to suport a load and a vertic flange adapted to ear inwardly against a load supported on said horizontal flange, and means connecting ada ted to be suspended from a said cables to their respective -bars and ar ranged so that the strain Von said cables `due l to a load on said bars will be directed into the angle between the flanges of each bar.

2. Alioisting apparatus,comprisin means p lgioistin cab e and a pair of bars separately suspende from said means and adapted to hang in` parallel relation to each other and substantially in tlie saine horizontal plane, each of said bars having a horizontal surface for supporting a load and havin a shoulder extending upwardly above said orizontal surface, the shoulders on said bars being spaced away from the inner edges of the bars and adapted to bear sidewise on the load, and a spreader extending between said suspending means ,and adapted to space said bars a predeter-` mined distance apart when no load is supported thereon.

` 3. The combination of two pairs of cables of substantially equal length, means connect ing said cables at their up er ends and adapted to be supported from a ioistin apparatus,

a pair of'bars, eachhaving its en s connected to the lower ends of the respective pair of cables, each of said bars comprising a vertical flange and a horizontal fiange, the horizontal llanges extending toward cach other from said vertical flanges and being located below the upper edges of the respective vertical iianges, and said cables having hinged connection with said bars and bein adapted to swing as on an axis parallel wit the re spective bar and located withinltlie angle' between the flan es of such bar. Signed at- Chicago this 12th'day of 'October, 1908.

EDWARD N. DREW.

Witnesses: i

EUGENE A. RUMMLER, VPirrir. T. Daaw.

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