US2007704A - Bucket - Google Patents

Description

July 9, 1935. H. w. BOTTEI;

BUCKET 2 Sheets-Sheet 1 Filed Jan. .17, 1934 ,1 IIIIIIIIIIJ I I 5 I Fla-2 HENRY W BOTTEN /74 H. w. BOTTEN July 9, 1935.

BUCKET 2 Sheets-Sheet 2 Filed Jan. 17, 1934 INVENTOR HENRY W. BOTTEN This invention relatesto mp ov m nt in Patented July 9; 1935 UNITED STATE.

YYYY

' BUCKET Henry W. Botten, Shaker Heights, Ohio, assignor to The Owen Bucket Company, Cleveland,

Ohio, a corporation of Application January 17,

Ohio 1 V 1934, serial No. 706,972

'6 Claims. (01, 37- 186) bucket of the grab or clarnshell type,

In handling material of heterogeneous character, such as miscellaneous rubbish or bo g d fuel, which is ground wood mixed with a certain percentage. of sawdust, it is difficult to obtain suitable filling of the usual bowl sections-of a grab or clarnshell bucket and it is one of: the objects of my invention to provide a bucket in which the I bowl sections are constructed in such a rnanner that they load satisfactorily when handling such materials; 1

- The materials mentionedabove are often handled-in bins where overhead space is at apremium". It is anotherobject of my; invention to provide a bucket in which the sheaves and coonterweight are arranged in a manner toconserve all possible head room and to. provide a bucket which will be suitable for use in all locations where; thehead room available for operating the bucket islimited. a

- Another object offthe invention is to provide a simple and cheaply constructed lower head or sheave block combined with a frame for housing the hinge pins, saidframe also providing additional weight adapted to open the bowl sections when the operating cable is slaokened.

2A further object of the invention is the provision of means forlubricating the operating sheaves and the cables" associated therewith;

Other objects and advantages will be apparent from the accompanying description together with the drawings, and the essential features will be summarized in the claims. l In the drawings; Fig. '1 is. a perspective view of a bucket embodying the improvements covered by "my invention; Fig. 2 is a side elevation ofithe bucket of Fig.1 in open position;v Fig..=3 is anern larged sectional view alongtheline 3+3 of Fig. 2; Fig.4 is'a sectional view along the line 4.4 of Fig. 5, showing details of the lower head or sheave block; Fig. 5 is 'asectional'view alongthe line 5-.5 of Fig. 4'; Fig. 6 is a sectional view along the line lie-e6 of Fig. 4; while Fig. 7. is an enlarged sectional view 'alongthe llne,1-."| of Fig.2;

l. have chosen to illustrate my invention as ap plied to a bucket having anupper supporting head and a lower head or sheaveblock movable verticallywith respect to the upperhead by means of an operating cable passing around sheaves ro tatalole in the upper and lower heads. "Two cooperating bowl sections are pivotally connected to the upper head by corner bars and pivot pins and are connected to the lower headby'hingelarms and hinge-pins," all in the well known manner. It

will beunder-Stood by those skilled in the art that certain ieatures of my invention are applicable to buckets of somewhat different construction than that illustrated herewith.

Rei rrins t F 1 and 2, an upp supporting o head It! is attached to the operating craneor; mechanism by means of holding or supporting cables H. in any s itabl m nne The lower head or sheave block I2 is movable vertically relae tive'tothe upper head by means of an operating 1o; cable It. which passes' ro e' t upp ad. controlled by bend sheav s M andguide sheaves l5, and isreeved around sheave l6 rotatably supported in the lower head, then through sheave l'l rotatably Supported in the upper head, thenre- 15.

turns about sheave ill in the lower head and is finally secured in any suitable manner to the upperhead; It will be noted that the axes ofsheaves I6, I! and I8 lie substantially in a vertical plane passing'through the meetingedges of the 29 bowl sections. Two sheaves are illustrated in the lower head but it will be understood that the num-- ber of sheaves is immaterial in the application ofmy invention. a J

' Cooperating bowl sections [9 and 20 are con- 25 nected by corner bars 2] to upper head Ill. The corner bars are secured at their lower ends to the upper outer edges of. the bowl sections by corner pins 22 rotatably mounted in corner brackets 23, andthe upper ends of the corner bars are pivotal- 3O ly connected to the upper head by pivot pins 24,

The bowl sections are connected with the lower head-by h nge arms 25 and hinge pins 26. The hinge pins of the two bowl sections are spaced apart laterally which gives a wider opening of 35 the bucket jaws. It will be noted that the distance between he hin e pi s i greater an h diameterof; the lower sheave. The arms of each section on opposite sides of the bucket may be connected: by a common hin p s is more clear- 40. 1y illustrated in Fig, 4:. These hinge pins may be rigidly secured to the hinge arms, asbymeansof pins 27,111 which case the hinge pins are rotatably supported in the lower head. By this construction the hinge pins also serve as spacer mem- 45 l sts for the bowl-sections.

To insure equal oscillating movement of the corner bars about the pivot pins in the upper head,

links 28, are pivotally connected between bars controlling the two bowl sections, and are mounted 5.0 on opposite sides of thepivot pins 24. In a similar manner, the hinge arms of the bowl. sections are constrain d t oscillat in equa ar s about the hinge pins 26 by means of links 29 pivotally connectedat tobetweenthehinee oi th 5.

two bowl sections and on opposite sides of the respective hinge pins. This arrangement of links 28 and 29 insures against tilt of the bowl sections with respect to the heads and insures equal digging effect of the cooperating bowl sections.

The manner of attachment of links 29 to hinge arms 25 is clearly shown in Fig. 7. A bushing 63 is inserted between pin 30 and the hinge arm. The links 29 are counterbored to receive the ends of the bushing which provides a bearing not readily attacked by the entrance of dirt or other abrasive material. A lock washer 64 and nut 65 complete the assembly. The pin 30 is prevented from turning in the links 29 by some suitable means such as the pin 66 which enters a notch in the link. The spaced members 29 give strength and provide for a wide bearing. Where the forces encountered require it the links 29 may be made solid. The use of links 29 is an improvement over the customary gear segments used to insure equal movement of the bowl sections about their hinge pins. Small particles are often caught in the gear teeth and cause rapid wear or broken teeth. The links 29 are free of such trouble.

The hinge pins are supported and connected by means of a frame indicated generally at 3 I, which in the form illustrated comprises an upper portion 32 in which the hinge pins are mounted, and a downwardly extending portion 33 which supports and encloses the sheaves i6 and I8. This frame is simply and cheaply constructed from plates and tubular sections all secured together by welding, although it will be understood that many of the advantages of my invention will accrue if the frame is formed of pressed or cast parts or otherwise suitably constructed. Referring more particularly to Figs. 4, 5 and 6, it will be noted that the'upper wall of the frame is formed by a plate 34, the lower wall by a plate 35, the side walls by plates 36 and 31, and the ends of the frame adjacent the hinge pins are closed by half-round tubular sections 38 and 39 secured by welding to the plates just enumerated. On each side of the sheaves I6 and 18 plates 40 and 4| extend through the upper portion of the frame and downwardly outside of the sheaves to form a housing and the bottom of this depending housing is closed by the plate member 42. A shaft supporting sheaves I 6 and I8 is suitably mounted in the walls 40 and 4| and the sheave housing may be further strengthened by brace members 46, as shown. The central portion of the housing surrounding the sheaves is preferably filled with oil or other lubricant which lubricates the sheaves and helps to maintain the flexibility of the cable I3. The sheave housing is supplied with a suitable cover plate 43 in which openings 44 are provided for the passage of cable I3. The sheaves are thus substantially completely enclosed and protected. The lower sheaves are set at an angle to the upper sheave to perfect the cable leads.

The hinge pins 26 are rotatably supported in the frame 3| in any suitable manner, but in my preferred form bosses 41 on the inside and 48 on the outside of the plates 36 and 31 are suitably secured in position, as by welding, and positioned by pins 49. These bosses support bushings 50 in which the hinge pins rotate. This construction provides ample bearings for the hinge pins so that-wear is reduced to a minimum. Also, the bearings are well protected from dirt and grit and the inner boss 41 may be extended any amount desirable to increase the length of the bearing.

The exterior bosses 46 are also'utilized o D ill stop members for the hinge arms to limit the opening movement of the bowl sections. To this end the bosses are provided with outwardly extending projections 5| and the hinge arms are formed with rib members 52 pressed or cast integrally therewith. The end portions of the ribs 52 are preferably curved, as at 53, to cooperate with similar curved portions 54 on the projections 5|. This construction is clearly seen in Fig.5.

It will be noted from a study of the drawings that the frame portion 32 is of limited height and is extended horizontally to provide the desired weight and to enclose the hinge pins. The height of this frame is substantially equal to half the diameter of sheaves I 6 and I8 and extends but very little above the top of the sheaves while permitting access to the sheave supporting shaft 45.

By its short vertical dimension and its position with respect to the sheaves, this frame conserves head room in that the vertical distance between the upper and lower heads is shortened. In other words, instead of providing a sheave block in the lower headand the usual depending weight therebelow, a compact construction is illustrated which permits the provision of a large counterweight in a very small space and substantially within the space necessary to accommodate the lower sheave. The frame portion 32 above the sheave axis 45 is materially heavier than the portion below the shaft. The heavier portion 32, however, is prevented from rotating by gravity about the shaft 45 when cable I3 is slackened, by the arrangement of the hinge arms and hinge pins together with the connecting link 29. This construction maintains the lower head and the frame portion 32 in a substantially horizontal position at all times. This is particularly important when taken in connection with the totally enclosed sheaves l6 and I8 and the arrangement of cable l3 passing through the openings 44. In this construction if the lower head should tilt, the cable would bind seriously against the sides of the openings 44.

In the embodiment illustrated, the upper frame portion 32 is hollow, but it will be understood that this frame could be additionally weighted inside or outside if desired.

The bowl sections are constructed so that the leading edges of the jaws will embed themselves in the heterogeneous material mentioned before and so fill the bucket to its capacity. To attain this end, theside walls 55 are cut back adjacent the bottom 56 so as to present leading edges 51 which are cut away progressively greater amounts from top to bottom. The leading edge or jaw 56 of the bottom thus extends beyond the side walls in a manner to bury itself in the material as the bucket closes. To support the leading edge of the bottom plates, substantially L-shaped reinforcing members 59 are secured to the side walls as by rivets, and the lower portions 60 of the members 59 extend beneath the projecting leading edge of the bottom and are suitably secured thereto as by means of the angle members 6| which, as shown, are riveted to members 59 and 58. The leading edges 58, which form the cutting jaws of the bowl sections, preferably meet in a substantially con-' tinuous line to avoid catching on the floor of a bin or other container. This portion of the bottom is preferably made in a manner to facilitate its renewal when necessary, as by means of a row of rivets 62. The leading edges of the bottom and side walls may be bevelled, as shown, to permit their easy passage through the material handled. When handling material having miscellaneous large pieces such as boxes, crates or chunks of wood mixed with finer material the cut-back portions of the sides accommodate the larger pieces while permitting the bucket to close completely upon a full load.

The'bucket illustrated has proved very eflicient in handling the type of loose and heterogeneous material above described, due to the combined arrangement of the jaws which easily enter the material; and the arrangement of the lower head and sheave block so as to conserve head room while at the same time permitting the loose material to pile up beneath the lower head. Buckets constructed after the manner disclosed have proved capable of handling 25% more material than buckets of the usual type of the same rated capacity.

What I claim is:

1. In a bucket of the class described, in combination, a pair of coacting bowl sections, each section having side walls and a bottom portion, said bottom portions having substantially continuous leading edges, said side walls being cut back, materially adjacent said bottom portions, and reinforcing members extending along said out back portions of said side walls and supporting the leading edges of said bottom portions.

2. In a bucket of the class described, the combination of a pair of coacting bowl sections, each section having side walls and a bottom portion and a renewable cutting jaw forming substantially an extension of the bottom portion beyond the side walls, and members secured to the side walls and extending beneath the jaw and secured thereto by connecting angle sections.

3. In a bucket of the class described, the combination of a pair of coactingbowl sections, each section having side walls and a bottom portion, the leading edges of said bottom portions meeting in a substantially straight line, the leading edges of said side walls being cut back progressive- I ly greater amounts from top to bottom, and substantially L-shape reinforcing members secured along the leading edges of the cut-back portions of said side walls and extending beneath the leading edges of said bottom portions.

4. In a bucket of the class described, the combination of an upper supporting head, a lower head, means for causing relative vertical move--v ment between said heads, a pair of coacting bowl sections connected by bars and pivot pins to said upper head and connectedby hinge arms and hinge pins to said lower head, the arms of each section on opposite sides of the bucket being connected by a common hinge pin, the hinge pins of v the two sections being spaced apart laterally, a frame associated with said lower head, said hinge pins being rotatably mounted in said frame and rigidly pinned to said armson opposite sides of saidframe, whereby said pins also act as spacer members. V

5. In a bucket of the class described, the combination of an upper supporting head, a lower head, cooperating bowl sections pivotally connected by corner bars and pivot pins to the upper head and connected by hinge arms and hinge pins to the lower head, means for causing relative movement between the two heads to open and close the bowl sections, a rigid link on each side of the bucket pivotally connected to the hinge arm of each bowl section, each link having portions embracing the hinge arm, each pivotal connection comprising a; pin passing through and substantially rigid with the embracing portions of the link, a bushing closely surrounding the pin in the hinge arm and extending at each end into counterbores in said embracing portions of the link, and the pivotal connections being spaced from the hinge pins and on opposite sides of the respective hinge pins, substantially as shownand described.

6. In a bucket of the class described, the combination of an upper supporting head, a lower head, bowl sections pivotally supported by both heads, a sheave in each head rotatably mounted and adapted to cooperate with an operating line to cause relative vertical movement between the heads and thereby to open and close the bowl sections, the axes of said sheaves lying substantially in a vertical plane passing through the meeting edges of the bowl sections, said lower head comprising a frame carrying pivot supports for said bowl sections above the lower sheave axis, and said frame extending laterally to space said pivot supports at a distance at least equal to the lower sheave diameter and to provide additional counterweight above the lower sheave axis.

HENRY W. BOTTEN.

Images