US921821A - Clam-shell bucket. - Google Patents

Description

J. W. FRAZIER & J. POX.

GLAM SHELL BUCKET.

APPLIOATION FILED MAR.1G, 1908.

921 ,821 Paitented May 18, 1909. v

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.OLAM SHELL BUCKET.

APPLICATION FILED MAR.16, 1908.

Patented May 18, 1909.

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J. W. FRAZIER & J. H. POX.

GLAM SHELL BUCKET. APPLICATION FILED MARJG, 1908.

Patented May 18, 1909.

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WITNESSES.-

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J. w. FRAZIER & L11. FOX.

GLAll SHELL BUCKET.

APPLIOATIOI FILED HA3. 16, 1908.

- Patented May 18,1909.

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.UNiirED STATES mmmJam r WFEAZQE'B 'AND 93 6mg:-

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Toal l ivllomitmay concern} a I a Be it known that-we, James W. FRAzmR masons -H. Fox,.citizens' of the United States, residents of Cleveland, county .of'

- Cuyahoga, State of Ohio, have jointly invented a new and useful Improvement in.

- drawn together are adaptedtogat er,up.or scoop 1n the material whichljthey arejthen V adapted to carry to a pointmore or lessreposit suchload In the prevailing construction of clamshell buckets, two'rcables are required to motc,-and there, upon being;,opcned, to de-;

- operate the same, one regular'holstmg-cable to support and raise or lower thetbucket as a whole, and another to close athB-SOOOP members and so retain them untilthej bucket is to-be discharged.-

'2 1 The object of the present invention is the provision of a bucket of the .above general type that will require but asingle cable to ucket .and that of'supporting the same-incidentally to its raising and lowering and to its removal from one point to'another, 4

- To the'accomplishment of this and related objects, said invention, then, consists of the means hereinafter fully described and particularlypointed out'in the claims. I

The annexed drawings and the following description set forth in detail certain mechanism embodying the invention,'such' disclosed means constituting, however,'but several'ofvarious mechanical-forms in which' the principle of the invention maybe used.

said annexed drawings '1 is a side elevation of one type of clam s ell bucket in which "has been inco orated our several imptovemelltsi such 1 shown in its 0pm Posltion; ig: 2 is a side e evatlon of .the sametype of bucket, but'in its closed position; Fig. 3 is a central vertical transverse section of such bucket likewise in its closed gbgiyion; F '4' is a section through the 'ng: cabs utilized inconnection with Specification of Letters Patent. p I gramea lmeh' 16,1908. s nsin 421392. I

rform both the operation of closing the steame my 1a; isoe.

suchlbucket, showing the manner of incorporatingtherein an e ectncal conductor, the

function ofv which will be hereinafter more fullydescribed; Fig. 5 is a: sectional view similar to that in Fig.3, showing a slight. modification in construction; -Fig. 6 is a plan view of the top frame constitutin a portion .of -the structure shown in Fig. '5;'- igs..-7-and '8 are respectively a-plan viewand'a side elevation showing the arrangement ofcables employed in; connection. with a/buoket constructed as in Fig. 5;' Fig.r 9 is a. transverse cross-section of. the cable containing the electrical conductors utilized-7m connection with such bucket; Fig; 10 is]: side elevation; 1

showing an adaptation of our invention to a second type of bucket; Fig. 11 is a-pa-rtial vertical transverse cross'section anda partial end elevation of such bucket Fig;-12 is a sec tional detailof the same; ,andaF ig.13-shows the ap lication' of our-mventionto a simple dumpucket;

1' Referring first ofall tothe I bucket.

illustrated in Figs. -1-- toy5, inc usivey such bucket will beseen to comprise primarily a" frame Ato'which the various other-=parts of the bucket are either directly or indirectly connected. These other arts include-the twoscoo members B; the orrn of which is a matter 0 indifference, being dependent upon the character of the material which the bucket is to handle; The outerends'of members B areconnected to framc'iAz means of links b; the inner-"ends beararms pivotally connected together and joined by means of a chain 6, one oneachside ofthe bucket, to the frame A, by means of'whieh the bucket is prevented from opening more widely than is desirable; "The dis' ition of the pivotal axis about which the uckets' thus openand close, and the -oints of pivotal connectionof links, 12 are so etermined' that the weight of the scoop mcmbers Bte-nds to throw the bucket open. The inclusion "in ion the members of a load-ofmateriah-will course increase this tendency Verticallv 'tums of the hoisting cable, or, rather cables,

D, there being two sueh cables' as 'isordinarily' the case in devices-of-this sort moan. to hold-the bucket" against.- rotating Ti multiplicationof sheavesla c in frame A am blocks 10 respectively, "about which we fsuch'icab epasses is'governcd' bv the list-fat considerations, viz. that of the gt 0W6! available-and the character of the service re-' hoisting cables be connected as shown in- Figs. '3 and with block .0 or whether they be connected with frame A; their inner ends are of course attachedto the winding drum D of. the hoisting the usual way. t will be obvious that when blo'ckO is drawn approximately. against the under side of frame A (see Fig.2) it is'in efiect a part ofsuch frame and the bucket is then adapted to be supported or raised by meansof' the hoisting cable. Embodied in a unitary structure with'block C are means for securing the same to the inner pivotally connected arms 6' of scoop members B, operation oi snobs-means being electrically 'controlled as will now a pear. device illustrated in igs. 1 to 3, this engaging mechanism comprises two pendent latch member'sc' normally held in their outer positions by a spring 0 in which positions they are adapted to hook under a frame B form-v in effect the pivotal axis of arms-b. Located between the two latches is a solenoid or electro-magnet C so disposed that upon being energized it will drawlatch members 0 inwardly, disengaging the same from the frame. ,Asshown. in the particular form of the device in question, electrical connections. to such magnet are had through suitably insulated conductors d embedded 'one in each of'the twp hoisting cables D, Fig. 4.

The operation of the form of the inoperative, or open, position of the bucket illustrated in Fig. 1',.it may be swung about and finallyv lowered onto the ile of ore, coal orother material being hand ed, all. by. proper movement of the derrick'boom or other support over which cables D ass and by paying out: such cables. W ion the bucket .thns' rests. on the pile, any further ayingout of cables D will permit block 0 to rop to its lower position, where it engages frame B m' the manner previously de-- scribed. Upon no'wdrawing. in on said cables the initial effect will be to bring such block back again to its normal position just engine or.motor,F1g. 7 in In the form 01' "our bucket. Est described may now be briefly reviewed.

winding drum C such as that illustrated in characterized by having a winding drum A .chainsa are wound.

beneath frame A, and thereby, through its connection with frame B, to close the scoop members B, this being the position of parts shown in Fig. 2.- In this condition the bucket may be swung'around, or carried in caseit 1s. 5

suspended from a trolley, to the place where the material is to be dumped. Thereupon, by simply closing the electric circuit through solenoid C,'the frame B is disengaged from swing open as shown in Fig. 1, which is the position assumed at the beginning of this paragraph. r

the block and the scoop members allowed to may beemploycd here ln the, modified construct on illustrated in Fig. 5 the same general type of bucket 15 shown, the only chanigebeing in the arran ement of the electrica y controlled device ordisengaging theblock C from the inner ends (of the scoop members. Here the electro-magnet C is vertically dis osed, and the armature a in the form of a p unger, is connected by a means of toggle links 0 with the latches c"$o that upon energization of the magnet the latches will be disengaged. A further modification-incorporated in this same connection 4 consists invthe use of a separate cable Cfor the conductors c" as shown irfFig. 9. Such cable is kept drawn in and still left" free to follow the movements of the bucket by means of a Figs. 7 and S, or by other-equ valent, means. InFigs: 10, 11 'andfl 12, is.illustrated the manner of adapting our invention-to a'clam shell bucket of another type, which is incorporated in the structure of frame A'by rotation of which drum the inner ends of the scoop members B are adapted to be drawnupwardly, through the medium of chains (1 connected with a shaft 6 joining the ends of armsb. In this bucket as now constructed 'a'separate cable is required to wind in and unwind chains 0 in order to open and close the bucket. To adapt our invention to the bucket, we construct the -winding drum in effect of two parts, an outer art or parts a, about which the hoisting calile or cables D are wound (there being two of these as before), and an inner drum (1, about which the The outer drum is normally "connected with the inner drumby means of springressed plungers e, the reti'actioir o'i which is efiected by means of electro-magnets E in the same manner as was the withdrawal of the latches c in the previously described device. When thus retracted the smaller. inner drum is free to rotate and independently of the outer drum and the bucket will open. In conjunction with the outer drums a there is provided a coil spring E, Fig. 12, the efl'ect of which is to maintain suchdrums with a'sufficient length of cable wound thereabout, when the bucket is'restin'g on the pile of material, so that when the plungcrs'are again allowed-to connect the 1 15 two drums and the cables D thereupon drawn in, the initial effect will be to rotate the inner drum and draw u the inner ends of the scoop members. Vhen these are finally drawn up further winding in of the cables 20 cancel limited'in fts applioatigin to this-single type of bucket, oi' came'r. Accordingly we show in I3, the sametype-{of hoisting mechanism illustrated in Figs. 10,1 1 and 12, but'applied ti) 'an'jordinary dump-bucket, it being connection of the hoisting cable with the trapof the bucket that is here electrically controlled, instead of connection of such cablewvith :the scoop-members of a clamshell bucket. Obviously the principle of operation remains the "same where a single trolled.

Other modes of applying the rinciple of our invention may e employe instead of the one explained, change being made as regards the mechanism herein disclosed provided the means stated by any one of the following claims or the equivalent of such stated means be employed.

We therefore particularly point out and distinctly claim as our invention 1. In a device of the character described, the combination of a frame; scoop members movably connected with said frame; and I having their outer ends pivotally connected with said frame; an externally supported block vertically movable beneath said'frame and adapted to engage said frame to support and raise the same; means *borne b said block adapted normallyto mechanica ly-engage the inner'ends of said members; and

electrical means adapted to "render said engaging means inoperative.

6. In a deviceof'the -character described,

the combination ofa frame; scoop members having their-outer ends "pivotally connected with said frame; a 'block'vertically movable beneath said frame and adapted to engage said frame to support and raisethe same; means borne by said block adapted normally to mechanically engage the inner ends ofsaid members; electrical means adapted to render said engaging means/inoperative and a cable connected with said block and adapted to draw the same against said frame.

7. In a device of the character described, the combination of a frame; scoop members having their outer ends 'pivotally con nected with said frame; a blocii vertically movable beneath said frame and adapted to engage said frame to su port and raise 'e'same; latch members borne by said hi 0c and adapted normally to engage the n 1' ends of said scoop members; electrical, means adapted to withdraw said latch members from such engagement; and a cable connected with said block and adapted to draw the same against said frame.

electrically controlled means adapted to be i mechanically connected with said members i with said frame; a block vertically movableto draw the same toward said frame. said frame to support and raise the same; latch 2. In a device of the character described,

the combination of a frame; scoop members pivotally connected with said frame; hoisting means for the device adapted to be mechanically connected with said members to draw means for controlling such connection.

; 3.. In a device of the character described; the combination of a frame; scoop members having their outer ends pivotally connected with said-frame; a hoisting cable attached to said frame and adapted to be mechanically with the inner ends of said memb rs to draw the same toward said frame; and electrical means for controlling such connection.

5. In a device of the character described,

the same toward said frame ;-and electrical f 8. In a device of the character described, the combination of a frame; scoop members having their outer ends pivotally connected beneath said frame and adapted to engage members borne by said block and adapted normally to engage the inner ends of said scoop members; an electro-magnet adapted, when energized to withdraw said lat ch members from such engagement; a cable passing a plurality of times between said frame and block and adapted to draw the latter againstsaid frame; and electrical connections for said magnet provided in conjunction with said cable.

9. In a device of the character described,

the combination of a frame; scoop members;

links pivotally connecting the outer ends of said members with said frame; a transverse member forming a pivotal connection for the inner ends of said scoop members; a block vertically movable beneath said frame and adapted to engage said frame to support and raise the same; pendent latch members z-idapted normally to engage the member connecting the inner ends of said scoop members an electro-magnet ada ted, when energized, to Withdraw said late members fromsuch engagement ;'a cable passing a lurality 65th combination of a frame; scoop members i of times between saidframe and b ock and eeesei adapted to draw the letter against said; 1L The combination with a device of the 16 frame; and electrical connections for said' magnet provided in conjunction with said I cable.

10. In a, device of the character described, the combination of a frame; scoop members movably connected withseid frame hoisting l character described; of hoisting means therefor, such means including a; cable; and electrical connections to said device includin a conductor embedded in said hoisting 021' Le.

Signed by us 28th day of February,

means for the device, such means including" 1908.

two cables adaptedeto be connected with said 1 members to draw the same tows-rd said:

' frame; electrical means for controlling such connection; and electrical connections for;

said means including two conductors embed- Q deed in said hoisting cables respectively.

JAMES W. FRAZIER.

JOHN H. FOX.

Accessed by I MARY ISRAEL, JNo. F, OBEBLIN.

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