US1748400A - Digger-bucket control - Google Patents

Description

Feb. 25, 1930.

G. sABlN BIGGER BUCKET CONTROL Filed May 3, 1929 DE DE' wezaos,

@@@eez 2 Sheets-Sheet l Feb. 25, 1930. I H, G; sABlN 1,748,400

BIGGER BUCKET CONTROL Filed May 5, 1929 2,Sheets-Sheet 2 Patented Feb.- z5, y1930 PATENr AOFFICE HAROLD G. SABINLOF NEW HAVEN, CONNECTICUT BIGGER-BUCKET ooN'TRI.

Application filed May 3,

This invention relates to improvementin l digger-bucketcontrols andwhile primarily "designed as a toyy is applicable for usein c diggers for practical purposes, the object be- 1 5 ing vto provide means for controlling the f movement of the bucket so that by means of a single lever the bucket may be held stationary, allowed to run free, or upon the further movement 'of the lever to arrest one y of the control-ropes, so ythat lthe bucketwill open, andthe invention` consists inthe con-y parstruction as hereinafter described andl ticularly recited inthe claims.

y v f In yillustrating my invention, I have shown itin connection .with a toy of the tractor type, but this is immaterial as the invention may be used' in connection` with a boompor .f a crane. D In the accompanying drawings: 2()

vention; ,y Y Y Fig'. 2 is a top or plan view thereof;

mechanism" yon.` an enlarged scale;

Fig. 4 vis jafront"v1ew thereO;

Fig.. 5 is'a( perspective view of the control-w;

lever detached; n ,e Fig.y 6 is a vperspective view of theoperat`- 3.0 ing-ratchet and crank detached; and I "Fig 7 is aA front view of ,the portion of the buckets showing the connection of the ropes therewith.

In carrying out vmy lnvention, I employ a main shaftclO provided with `a crank 11 by whichit may be turned, andl secured to the.

" shaft are'the two ends' of a rope 12, the

' reaches 13 of which are eachg'iven a turn laround asecondary shaft 14 parallel with 49 the shaft 10, the said reaches being arranged on opposite'sides offlanges 15 and 16, vso ,as'to provide space between them for a rope .f 17, which is fastened to'the shaft 14. y From the shaft 14 the reaches 13 pass over the idlers 18 and 19 on a shaft 20 which kis mounted in they outer end of a boom 23, thence downward through a yoke 24, and vthence downward through a weight 25 on a shaft 26 to which buckets 27 and 28 are pivotevd, the said buckets being connected with v Fig.y 1 is a side view illustrating a formv of Adigger-bucket control embodying my 1n- Fig. 3 is aside viewfof the `bucket-controll Y, the bucket willnot rotate.

1929; Serial 170,360,154.

they shaft 26 and with the yoke 24 by links 29 and 30, in the usual manner of clamshell buckets.

The .rope 17 passes over an idler 31 between i e the idlersl8 and 19 and downward into con- 55 nection with the Center of the yoke 24 and between the reaches 13. l kOn the shaft 10 is a ratchet 32, and engaging with this ratchet is a pawl 33 formed as part of alever 34 which is normally held y60 in enga'gementY with the ratchet by a spring 35. The lever 34 extends beyond they shaft 14 and is formed with a notch 36 to engage with that 'shaft and preferably the surface M of thenotch will be serrated so as to allow 6,5

the lever to frictionally engage with said shaft so as to arrest the movement thereofn In al constructionv employing the boom 23 an additional shaft 37 will be employed provided'with a crank38k by which it may be 70 turned, and fixed to this shaft is a rope 39 extending overan idler 40 and thence to the outerend of the boom, whereby the boom may be raised or lowered.

When it is vdesired to raise the bucket, the

fcrank 11`is turned and this crank turns the lshaft l10 andwinds the rope 12 thereon, and asv they ends of the rope are wound on the shaft 10 they turn the shaft 14 vand wind the rope 17 thereon, the pawl 33, engaging f the ratchet 32, holds the rope 12 in any position ofv adjustment, and as the reaches are separated and held separate by the yoke 24,

*To allow the kbucket to lower, the ylever 34 willl be moved'so as to lift the pawl 33 out of engagement with the ratchet 32, thus freeing the shaftlO and allowing the bucket to drop. To open the bucket, however, the lever will be further advanced so as to engage with the shaft v14 and arrest the running'of the rope 17and hence stop the movement of the yoke 24. This permits the weight 25 to continue downward and open the buckets 27 and 28. If the shaft 14 is 'then' released, the 'buckets in their open position will continue to go down untilthe movement of the shaft 10 is arrested.

It will thus be noted that the action of the lever 34 is to permit the shafts 10 and 14 to be turned, then moved to release the shaft 10 and finally moved to hold the shaft 14. c y While I have shown a clam-shell bucket, it is robvious that the invention maybe used 5 in the so-called orange-peel7 type of bucket,

and it is obvious Without further illustration that instead of employing the boom, Iny control-mechanism might be mounted in an overhead crane'or'carriage. y I thus not only produce a very attractive toy which can be operated without havingvtheA ropes of the buckets twist but I also have det vised practical means for controlling the operation of buckets for practical .purposes.1 Iclaim:v

y1. `A bucket-control comprising two shafts, a rope having its ends attached to one shaft i and given a turn around the other shaft, another rope fixedto said second'y shaft, said ropes extending into connection with a'bucket, A y u' a ratchet fixed on the first shaft, and a pivotal i lever provided with a pawly adaptedv to engage said ratchet and formed with :a notch to engage with the second shaft. 2L A bucket-control comprising two shafts,

a'rope having its Vends attached to one shaft and: given a turnaround the other shaft, another rope Xed to said second shaftysaid ropes, extending into connectionV with a bucket, a ratchet fixed on the first shaft, and a spring-actuatedpivotal lever provided with a pawladapted to engagesaid ratchetjand formed Vwith a notch to engage with lthe y secondfshaft. v c 3. A bucket-control comprising aj main shaft with. means for moving the same, a secondary shaft parallel ,withv the first shaft, ,flangesmountedv on. said secondary shaft, a.v rope,th'ev ends of which are secured to the 10 first shaft and turned about the second shaft outside the flanges, whereby themovement of v the rope will turn said secondl shaft, a. rope fixedto said second shaft between saidflanges, i'dl'e'rs over-l which said ropes pass, the said Y ropes having separate connection with a p .bucket-mechanism, a ratchet connected withV said first shafta lever providedwithfa pawl tofeng'agevwith vsaid ratchet, and a spring tending to hold the pvawl in engagement with V50. said ratchet, said lever kextending beyond the second shaft andformed with a, friction=-sur faceto engage therewith landso designed that the lever normally holds the first shaft against rotating in one directioinithe first movement 55 ofthe lever releasing the first shaft without engaging the second shaft, leaving. both shafts free, and' further movement of the lever engaging the second shaft 13o-arrest the movement ther,eof. k y p' y "v y In testimony whereof,'I have signed this` specification.A p

, ,Y HAROLD G. rSABIN;Y

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