US2258430A - Dredge bucket - Google Patents

Description

I EETQ- \MLLIAMHTAYLUR v Get. 7, 1941.

DREDGE BUCKET w. H. TAYLOR 2,258,430

Filed Nov. 26, 1940 2 Sheets-Sheet l W QQQMX Oct. 7, 1941. w YL 2,258,430

DREDGE BUCKET Filed Nov. 26, 1940 2 Sheets-Sheet 2 \MLLI M I-LTAYLDR Patented Oct. 7, 1941 2,258,430 DREDGE BUCKET.

William Hoffman Taylor, Phillipsburg, N. J., assignor to Taylor-Wharton Iron and Steel Company, High Bridge, N. J., a corporation of New Jersey Application November 26, 1940, Serial No. 367,303

Claims.

The invention provides certain improvements in dredge buckets constructed, arranged, and

adapted for articulation through the medium of linkage pins formed of bar stock.

Although headless pins were suggested many years ago, and their economy long has been recognized, their use has been restricted because the locking provisions were unsatisfactory, the usual practice being to notch the pins so as to accommodate wedges mounted in the eyestock, and that construction and arrangement failed of its purpose because it is inadequate to prevent motion in the front eyes of the buckets.

The object of the invention is to permit the use of headless pins by obviating the shortcomings and disadvantages of the pin locking devices heretofore proposed and this is accomplished through the medium of male and female eccentric provisions which are fully adequate for the purpose.

The invention in its preferred embodiment is illustrated in the accompanying drawings wherein Figure 1 is an end view of enough of a dredge bucket to show the application of the wear compensating pin lock, parts being broken away the better to disclose the stud mounting.

Fig. 2 is a section on line 2-2 of Fig. 1.

Fig. 3 is a section on line 3-3 of Fig. 1.

Figs. 4 and 5 show, respectively, side and end views of the pin.

It will be understood that the pin 5 is supported at its ends in the conventional way by a pair of eyes, one of which is shown at 6. There is a notch at each end of the pin defined by a radial wall 1 and by an inwardly inclined wall 8. And the stock of each eye is relieved eccentrically of the pin and for the depth of the notches thereof, as defined by walls 9 and ID. The purpose and effect of this construction and arrangement is to provide a repository for an element H of generally half circular form, its rounded portion 12 serving as a cam or male eccentric which mates with the female eccentric wall or track Ill and has rolling contact therewith; and its cross wall I3 being inclined in coincidence with the inclined wall of the notch in the pin whereby the eccentric or cam is maintained in proper relation to its track and, of course, to the pin.

The curve of the arcuate wall or track III is generated from a point substantially tangential to the circumference of the pin, or its receptive eye, and extends to the clear to provide an entering slot for the cam motion pin lock ll.

The facial slot l4, when present, is useful to receive a bar or other implement to facilitate the mounting of the eccentric lock element ll. So also the cavities 15 in the end faces of the pin are useful to receive and cooperate with an implement for manipulating the pin as by rotating it to place upon its installation or upon its removal.

A bracket l6 serves for the mounting of a screw stud I! which may be advanced in a complemental guide or bore 22 so as to put thrust on the cam. The guide or bore 22 is of polygonal or equivalent section and the head of the stud has flat faces 2| whereby the parts are withheld from turning movement.

It will be understood that the end of the stud impinges upon the heel l8 of the cam under the actuation of an adjusting nut 19 and that the parts in the adjusted position are secured by a lock-nut 20. The guide passage for the stud in bracket I6 is so disposed with relation to the heel of the cam as to provide for the application at will of reactive forces for the purpose of preventing wear on the pin ends and their bearings in the front eyes.

Under preferred practice the buckets are provided with pin looks at each end of the pin to insure maximum resistance to torque and the walls 8 are so located with relation to the pin center that after a pin has worked in the position as first installed, it can be removed and reversed end for end to present a new wearing surface against the bushing in the rear eye of the adjoining bucket.

The operation of the improved locking means will be apparent to those skilled in the art, it being sufficient to add that under extraordinary conditions as, for example, when the maximum travel of the adjusting studs has been reached, further adjustment can be effected by the application of one or more shims between the proximate faces of the cams and the pins.

Having described the invention, I claim:

1. A locking assembly for dredge bucket pins of the headless type, comprising, in combination, a pin and its supporting bearings, a cam space defined in part by a flat surface on the pin and in part by a curved track in the bearing stock, a cam having a conforming fit, and a controlling reaction device operatively mounted with relation to the cam.

2. A locking assembly for dredge bucket pins of the headless type, comprising, in combination, a pin and its supporting bearings, a cam space defined in part by a fiat surface on the pin and in part by a curved track extending from one side of the pin to an entering slot, a cam introducible through said slot and coordinating with said fiat surface and with the track, and means for exerting pressure on the cam whereby it is effective to prevent motion of and Wear on the pin and in the bucket eyes.

3. A locking assembly for dredge bucket pins of the headless type, comprising, in combination, a pin and its supporting bearings, a cam space defined in part by a fiat surface on the pin and in part by a curved track extending from one side of the pin to an entering slot, a cam intro ducible through said slot and coordinating with said flat surface and with the track, and a screw stud operatively mounted with relation to the heel of the cam for maintaining pressure thereon to prevent motion of and wear of the pin and in the bucket eyes.

V 4, A dredge bucket having pin-receiving eyes with outwardly facing recesses whose large dimension is defined by an arcuate wall whereof one end is substantially tangential to the proximate eye and whereof the other end forms an entering slot for a filler for the recess when the pin is in place, a headless pin having radially relieved areas which constitute cooperating walls for the recesses, a filler cooperating with the respective arcuate wall and with the opposed relieved area, and means for applying end thrust to the trailing end of the filler.

5. A dredge bucket having cylindrical pin holes for reversibly receiving a coupling pin, said pin holes terminating in part in end recesses whereof each has a first wall generated on a curve whereof one end is substantially tangential to the circur'nference of the pin and whereof the other end is substantially spaced from the pin to provide a passway to the recess, a coupling pin having notches to provide second or cooperating walls for said recesses, and a member introducible through said passway and cooperating with the WILLIAM HOFFIVLAN TAYLOR.

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