US3093917A

US3093917A - Bucket structure

Info

Publication number: US3093917A
Application number: US157359A
Authority: US
Inventors: Robert J Schroeder
Original assignee: Allis Chalmers Corp
Current assignee: Allis Chalmers Corp
Priority date: 1961-12-06
Filing date: 1961-12-06
Publication date: 1963-06-18
Anticipated expiration: 1980-06-18

Description

June 18 1963 R. J. scHRoEDER 3,093,917

BUCKET STRUCTURE Filed Deo. 6, 1961 United States Patent O 3,093,917 BUCKET STRUCTURE Robert J. Schroeder, Deerfield, Ill., assignor to Allis- Chalmers Manufacturing Company, Milwaukee, Wis. Filed Dec. 6, 1961, Ser. No. 157,359 8 Claims. (Cl. 37141) This invention relates to bucket structure and particularly to excavating buckets of the type used on tractor loaders.

It is an object of this invention to provide a bottom structure for a bucket which has superior strength to provide art bucke-t structures.

lt is a further object of this invention to provide a bucket structure having a new and improved core construction.

It is a further object of this invention to provide a bucket bottom structure having a backup plate behind the bucket blade and digging teeth with upper and lower legs extending rearwardly to be secured to bucked bottom through the backup plate and through the blade.

It is a further object of this invention to provide a bottom structure with removable teeth which reinforce the bucket bottom 'when installed.

These and other objects and advantages of this invention will become apparent to those familiar with the art when the following description is read in conjunction with the drawings in which:

FIG. 1 is a side View of a present invention;

FIG. 2 is a section of FIG. 1;

FIG. 3 is a section of FIG. 2;

FIG. 4 is a section view of FIG. l; and

FIG. 5 is a section View of FIG. 1.

Referring to the drawings, the bucket includes a pair of upstanding side walls `6, 7 which are secured by welding to a bottom wall 8. The bottom wall 8 has a front `flat section 9 and an upwardly sloping section `11 extending rearwardly from the front section. The rear wall 12 of the bucket is a continuation of the bottom wall 8. Brackets 13 are secured to the rear wall 12 to provide mounting points 14, -16 for attachment to suitable tractor mounting linkage. The bottom and sides of the bucket are reinforced by a wraparound plate -17 on the underside of the bucket. The wrap-around plate 17 extends upwardly at the laterally opposite sides of the bucket as shown in FIGS. 4 and 5 and is welded to the side walls 6, 7. Wrap-around plate `17 has a forward portion 18 which lies beneath and is Welded to ilat section 9 of the bottom wall 8. A rearwardly extending portion 19 of plate 17 is substantially coplanar with the forward portion 9 and extends rearwardly beneath the upward sloping section 11 in vertically spaced relation thereto. To add further strength to the bottom core construction, a channel member 21, with

yflanges

22, 23 diverging from a dat bottom web 24, extends the width of the bucket and has its ange edges welded to the upward sloping portion y11 of the bottom 3. The wrap-around plate 17 is secured as by welding to the channel 21 adjacent the junction of its flange 22 and web 24. The web 24 is substantially a continuation of the underside of the bucket bottom structure. The wrap-around plate 17, bottom 8 and the channel member 21 form a core construction for the bucket bottom, which is closed at the ends by addition of

end plates

26, 27 welded to the side walls 6, 7 and the ends of the channel 21.

A wrap-around blade 31 is secured to the bottom wall bucket incorporating the view taken along the line II-ll view taken along the line III-JH taken along the line IV-IV taken along the line V-V 8 and the wrap-around plate `17 by rivets 32 extending through the forward flat portion 9 of bottom wall 8 and the forward portion 18 of plate 17. Rivets 33 secure the upward extending ends of blade 31 to the wraparound plate 17 and side walls of the bucket. As is the practice in the trade, the cutting blade 31 may be removed by cutting the rivets by conventional means. A replacement blade may then be installed. A backup plate 34 is welded to the underside and vertical sides of the Wrap-around plate 17. The forward sides of the bucket are reinforced by

strips

51, 52 welded to the side walls 6 and 7, respectively. The backup plate 34 is slightly thinner than the rearwardly extending portion of blade Transversely spaced excavating teeth 41 are secured to the bottom of the bucket to aid in digging. Each tooth has an upper rearwardly extending leg 42 and a lower rearwardly extending leg 43. As shown in FIG. 3, a bolt 44 extends through holes in the upper and lower legs of the tooth 41, the bottom wall flat section 9, the forward portion I1S` and plate 34, and, together with nut 46, secures the rear end of the tooth to the bucket bottom. A bolt 47 extends through holes in the upper and lower legs -of the tooth 41 and through holes in the front section 9, forward portion 18 and blades 31. Bolt 47 and nut 48 rigidly secure the forward portions of the

legs

42, 43 to the bottom structure.

In the noninstalled condition of the tooth the legs 4t2, 43 are apart slightly further than when installed to permit the tooth to be slid easily in place. A recessed portion `di? permits the bottom leg of the tooth to be sprung suiiiciently to be drawn up tight as illustrated.

When the teeth 41 are installed on the bucket, it will he noted that they bridge the gap between the removable cutting blade 31 and the backup plate 34. This construction provides a stronger bucket than one without teeth. In constructing a bucket with `digging teeth strength is very important since such a bucket is subjected to greater stresses in view of their being used for prying out rocks, etc. The teeth extend the longitudinai dimension of the bucket bottom, thereby increasing the leverage on the bottom structure `during prying out operations.

From the foregoing it is obvious that an extremely strong bucket bottom has been provided. The core construction of the bottom extends from the rear end of the tooth to the rear of the bucket. The front section of my novel bucket construction permits a detachable blade to be secured and permits detachable teeth to be mounted in bridging relation to the removable blade 31 and the backup plate 34. This -bucket construction is economical to fabricate, gives Ilong trouble free service and is extremely strong for its weight. Also, the reinforcing teeth, actually serve t-o strengthen the bucket sufliciently to hold up under the additional stresses to which the bucket is subjected because of the addition of the teeth.

Although a single embodiment of this invention has be understood that it is intended that the claims should cover other embodiments which come fairly within their scope.

What is claimed is:

1. An excavating bucket comprising: a pair of spaced upstanding side walls; a longitudinally extending bottom wall rigidly secured at its laterally opposite ends to the bottom ends of said side walls, said bottom wall having a front flat section and an upward sloping section extending rearwardly from said front flat section; a wraparound plate having a forward portion in underlying contact with the flat section of said bottom wall and including upstairding end portions secured to the laterally outer sides of said side walls, said wrap-around plate presenting a rearward extending portion substantially coplanar with said forward portion and spaced vertically below said upward sloping section of said bottom wall; a wraparound cutting blade connected to the front of the bottom and sides of said bucket; a backup plate rigidly secured to the underside of said wrap-around plate at the rear of and parallel to said blade, and a plurality of laterally spaced reinforcing teeth having upper and lower legs secured to said bucket in bridging relation to the space between said blade and backup plate.

2. The structure set `forth in claim 1 and further including releasable fastening means for cach of said teeth including a rst fastening member extending through said bottom wall, wrap-around plate, blade and legs and a second fastening member extending through said bottom wall, wrap-around plate, backup plate and legs.

3. The structure set forth in claim l and further comprising a transverse reinforcing member extending between and rigidly secured to the rear end of said wraparound plate and said upward sloping section of said bottom wall.

4. An excavating bucket comprising: a pair of spaced upstanding side walls; a longitudinally extending bottom wall rigidly secured at its laterally opposite ends to the bottom ends of said side walls, said bottom wall having a front flat section and an upward sloping section extending rearwardly from said front at section; a wraparound plate having a forward portion in underlying contact with the at section of said bottom wall and including upstanding end portions secured to the laterally outer sides of said side rwalls, said wrap-around plate presenting a rearward extending portion substantially coplanar with said forward portion and spaced vertically below said upward sloping section of said bottom wall; a channel member rigidly secured to the rear end of said wrap-around plate and having lianges rigidly secured along their length to the underside `of said bottom wall; and a wrap-around cutting blade connected to the front of the bottom and sides of said bucket.

5. The structure set forth in claim 4 and further comprising a backup plate rigidly secured to the underside of said wrap-around plate at the rear yof and parallel to said blade.

6. The structure set forth in claim 5 and further comprising a plurality of laterally spaced teeth each having an upper vleg extending rearwardly above said bottom wall and a lower leg extending rearwardly below said bla-de and backup plate, and means securing said upper and lower legs to said bucket including a rst fastening member extending through said bottom wall, wrap-around plate and blade and a second fastening member extending through said bottom wall, wrap-around plate and backup plate.

7. An excavating bucket comprising: a pair of spaced upstanding side walls; la longitudinal-ly extending bottom wall rigidly secured at its laterally opposite ends to the bottom ends of said side walls, said bottom wall having a front at section and an upward sloping section extending rearwardly from said front flat section; a wraparound plate having a forward portion underlying and secured to said flat section of said bottom wall and including upstanding end portions secured to the laterally outer sides `of said side walls, said wrap-around plate presenting a rearward extending portion substantially coplanar with said forward portion and spaced vertically below said upward sloping section of said bottom wall; a wrap-around cutting blade connected to the front of the bottom and sides of said bucket', a backup plate rigidly secured to the underside -of said wrap-around plate at the rear of and parallel to said blade, and a plurality of laterally spaced reinforcing teeth having upper and lower legs secured to said bucket in bridging relation to the space between said blade and backup plate.

8. An excavating bucket comprising: a pair of spaced upstanding side walls; a longitudinally extending bottom wall rigidly secured at its laterally opposite ends to the bottom ends of said side walls, said bottom wall having a front llat section and an upward sloping section extending reanwardly from said front flat section; a wraparound plate having a forward portion underlying and secured to said fiat section of said bottom wall and including upstanding end portions secured to the laterally outer sides of said side walls, said wrap-around plate presenting a rearward extending portion substantially coplanar with said forward portion and spaced vertically below said upwand sloping section of said bottom wall; a channel shaped structure rigidly secured to the rear end of said wrap-around plate and having flanges rigidly secured along their length to the underside of said bottom wall; and a wrap-around cutting blade connected to the front of the bottom and sides of said bucket.

No references cited.

Claims

1. AN EXCAVATING BUCKET COMPRISING: A PAIR OF SPACED UPSTANDING SIDE WALLS; A LONGITUDINALLY EXTENDING BOTTOM WALL RIGIDLY SECURED AT ITS LATERALLY OPPOSITE ENDS TO THE BOTTOM ENDS OF SAID SIDE WALLS, SAID BOTTOM WALL HAVING A FRONT FLAT SECTION AND AN UPWARD SLOPING SECTION EXTENDING REARWARDLY FROM SAID FRONT FLAT SECTION; A WRAPAROUND PLATE HAVING A FORWARD PORTION IN UNDERLYING CONTACT WITH THE FLAT SECTION OF SAID BOTTOM WALL AND INCLUDING UPSTANDING END PORTIONS SECURED TO THE LATERALLY OUTER SIDES OF SAID SIDE WALLS, SAID WRAP-AROUND PLATE PRESENTING A REARWARD EXTENDING PORTION SUBSTANTIALLY COPLANAR WITH SAID FORWARD PORTION AND SPACED VERTICALLY BELOW SAID UPWARD SLOPING SECTION OF SAID BOTTOM WALL; A WRAPAROUND CUTTING BLADE CONNECTED TO THE FRONT OF THE BOTTOM AND SIDES OF SAID BUCKET; A BACKUP PLATE RIGIDLY SECURED TO THE UNDERSIDE OF SAID WRAP-AROUND PLATE AT THE REAR OF AND PARALLEL TO SAID BLADE, AND A PLURALITY OF LATERALLY SPACED REINFORCING TEETH HAVING UPPER AND LOWER LEGS SECURED TO SAID BUCKET IN BRIDGING RELATION TO THE SPACE BETWEEN SAID BLADE AND BACKUP PLATE.