US2838856A

US2838856A - Earth scooping bucket attachment for breaking hardened ground or the like

Info

Publication number: US2838856A
Application number: US573930A
Authority: US
Inventors: Buisse Charles
Original assignee: Individual
Current assignee: Individual
Priority date: 1956-03-26
Filing date: 1956-03-26
Publication date: 1958-06-17
Anticipated expiration: 1975-06-17

Description

C. BUISSE EARTH SCOOPING BUCKET ATTACHMENT FOR BREAKING HARDENED GROUND OR THE LIKE June 17, 1958 2 Sheets-Sheet 1 Filed March 26, 1956 R m w W ,4 T TOR/VEV June 17, 1958 c, u ss 2,838,856

EARTH SCOOPING BUCKET ATTACHMENT FOR BREAKING HARDENED GROUND OR THE LIKE Filed March 26, 1956 2 Sheets-Sheet 2 CHARLES BUIYSSE ATTORNEY EARTH SCOGPING BUCKET ATTACHMENT FDR BREAKING HARDENED GROUND OR THE LIKE Charles Buisse, Racine, Wis. Application March 26, 1956, Serial No. 573,930 Claims. c1. 37-142 This invention relates to earth working implements and, more particularly, it relates to an earth scooping bucket attachment for breaking hardened ground or the like.

It is well-known that a problem exists with respect to digging ground which is frozen and/or hardened by pressure such as that found in a dirt road. With respect to a road in a locale having freezing temperatures, the combined packed and frozen depth of the road often extends two feet beneath the ground line. This obviously creates a problem when attempting to use the normal digging equipment under the conditions mentioned. Attempts to use trenching buckets by dropping them, or otherwise causing them to strike the surface of the hardened ground, do not permit the buckets to break the ground sufiiciently for subsequent efiicient digging since the bucket is provided with a plurality of teeth, all of which simultaneously strike the ground and, therefore, do not penetrate it. Also, even when the usual bucket is employed for ground breaking, the teeth are often damaged, and costly repairs are then necessary.

nited States Patent Another method of breaking hardened ground is that which employs a pneumatic ram, such as the well-known air hammer, but this, of course, requires the special equipment, and it has, in fact, been found to take more time since the air compressor and hammer must be brought to the work site, and this equipment can break or chip only small areas of the ground which must be eventually scooped in a subsequent operation.

It is an object of this invention to provide a means for breaking hardened ground with the means being inexpensive, readily available, and eflicient in its operation.

A more specific object of this invention is to provide an attachment for the standard earth scooping bucket wherein the attachment can be readily attached and detached with respect to the bucket, and wherein the attachment can be attached to the bucket for use in the manner which avoids the danger of damaging the bucket.

Still a further object of this invention is to provide an earth scooping bucket with an attachment for breaking hardened ground and also for permitting scooping of the broken ground, with both operations performed in one motion of the bucket.

Other objects and advantages will become apparent upon reading the following description in conjunction with the accompanying drawings, wherein:

Fig. 1 is a front perspective view of a standard earth scooping bucket with a preferred embodiment of this invention attached to the bucket.

Fig. 2 is a side elevational view of Fig. 1.

Fig. 3 is a rear elevational view of Fig. 1.

Fig. 4 is a sectional view taken on the line 4--4 of Fig. 1. V

Similar reference numerals refer to similar parts throughout the several views.

ice

The drawings show a well-known form of earth scoop or bucket 10 with a preferred embodiment of an attachment 11 mounted on the bucket. It should be understood that the bucket 10 is operatively supported to depend from support arms 12 and cables 13 suitably attached to the boom of the supporting and controlling machine which is not shown. Thus, it should be understood that the connectors 12 pivotally attach to

cars

14 and 15 which are integral with the bucket 10. The means for pivotal attachment is shown to be

pins

16 and 17 while pins 18 suitably pivotally connect the cables 13 through a member 19 to the bucket ears 15. Referring again to the bucket 10, it will be noted that it consists of the usual sides 21 and the usual bottom section 22, with the sides and the bottom section suitably connected together in the usual manner such as welding at the junctures therebetween. Also, the bottom section of the bucket 10 terminates in the usual front edge or lip 23, and a plurality of bucket teeth 24 are suitably attached to' the bottom section 22 to project forwardly of the lip 23 with respect to the scooping direction of the bucket. It will be noted that the forward portion of the bottom section 22 actually is preferably composed of a heavier section 26 to which the teeth 24 are suitably welded or otherwise attached, as shown. The teeth are composed of a wedge shaped or pointed cap section which is snugly fitted over similarly wedge shaped base sections which are shown welded to the portion 26 of the bucket bottom section.

Since the foregoing is of a conventional nature, no further disclosure thereof is deemed to be necessary. However, it should be understood that the bucket could be provided with a different number of teeth, and also the precise construction and formation of the bucket could vary within the scope of this invention. Therefore, attention is directed to the fact that earth scooping buckets are, of course, heavy duty equipment, and

they are necessarily subjected to shock and heavy loads, and for this purpose, heavy sections, such as the portion 26, are preferably employed in these buckets. The fact that both the bucket and the attachment of this invention are to be employed in breaking and digging hardened ground further requires that the bucket be constructed to withstand the shock and impact loads applied to it.

The attachment 11 is shown to consist of a tooth 27 having substantially the same wedge shape as that of the teeth 24, and the tooth 27 terminates in an edge 28 which is forwardly disposed with respect to the direction of digging motion of the bucket. Members or four

plates

29, 3t and 31 are preferably formed as shown and secured together by weldingor the like to form a support member 32 for the tooth 27 which is shown attached to the support member by welding to the top plate 29. The two plates 30 form the opposite sides of the support member 32, and Fig. 1 shows the side plates 30 terminating rearwardly in portions 33 disposed along the top surface of the bottom section 22 of the bucket and, therefore, overlapping the bucket bottom to be in contact therewith. Also, the plates 30 preferably extend underneath the bucket bottom, as best shown in Fig. 2, and thus each of the plates 30 presents a rearwardly faced abutment, such as the abutment 34 shown in Fig. l. The abutments 34 are disposed in abutting relation with the edge or lip 23 of the bucket bottom 22, and the abutments are spaced apart along the lip 23, since the plates 30 acting on the bottom section of the bucket are not as effective as they would be if they were concentrated on the bucket through the width of one of the teeth shown.

Figs. 2 and 3, particularly, show two curved arms or connectors 36 suitable attached, such as by Welding along the lines 37, at their lower ends to' the sides of the plate 31 and they are thus connected with the support member 32. The arms 36 are curved, as mentioned, to conform to the curvature of the bottom section 22 of the bucket, and they extend to the top of the bucket to removably attach through a bolt 38 or the like to two plates or cars 39 shown welded to the bucket. Thus the bolt 38 is the only positive attachment between the bucket 10 and the attachment 11 and, of course, the bolt 38 can be readily removed for slipping the attachment off the bucket, and the attachment can be readily slipped onto the front edge of the bucket, and the bolt can be readily placed into the position shown for securing the attachment to the bucket.

Fig. 3 shows that the lower ends of the arms 36 can extend to the center one of the bucket teeth and thus flank the center tooth which then restricts the lateral movement of the attachment with respect to the bucket. Also, Fig. 3 shows two plates 41 which are suitably Welded to the top insides of the arms 36 to project toward the center of the teeth 24 to abut the center tooth upon lateral movement of the attachment and, therefore, further restrict said lateral movement.

In the use of the bucket, it should be understood that the bucket is suspended and moved in the usual manner, that is with the front or tooth edge of the bucket being moved downwardly toward the ground, at approximately an eighty degree ground-striking angle. With the attachment fixed to the bucket, as shown in the drawings, the bucket is preferably dropped onto the surface of the hardened ground, and the tooth 27 thus penetrates the ground under the force of the dropping bucket. Since only the tooth 27 penetrates the ground, the force of the dropping bucket is concentrated over a small area and, therefore, the hardened ground is penetrated, as desired, and pivotal movement of the bucket effected about the pins 16 through the usual pulling force on the cables 13. This action will cause the tooth 2.7 to tear out or gouge the ground around the area penetrated, and thus the hardened ground is broken up at least on the top layer. Also, continued movement of pivoting the bucket about the pin 16 and simultaneous lowering of the bucket, if necessary, will cause the bucket with the attachment to scoop the broken ground. Thus, in one continuous movement of the bucket and the attachment, ground penetration and scooping can be accomplished.

Since the bucket attachment and its manner of mounting onto a bucket result in a sturdy construction, it has been found that even a frozen and packed dirt road can be dug up in a fraction of the time required by other known equipment, and there is no damage to the attachment or the bucket. Also, shale, limestone, and the like can be penetrated and dug up.

While a specific embodiment of this invention has been shown and described, it should be obvious that certain changes could be made, and the scope of this invention should, therefore, be limited only by the appended claims.

I claim:

1. An attachment for an earth scooping bucket which has a body and a plurality of teeth projecting therefrom at the forward lip of the body, the combination of a tooth provided with a pointed end, a support member attached to said tooth at the end thereof opposite said pointed end, said support member disposed and extending on both sides of the vertical longitudinal plane of said tooth and away from said pointed end thereof, said support member disposed for abutting said forward lip of said body of said bucket on both sides of said vertical longitudinal plane of said tooth, said attachment including means flanking both sides of one of said teeth 4 of said bucket for restricting lateral movement of said attachment on said bucket, and connecting means attached between said support member and said bucket for securing said support member in the position for abutting said forward lip.

2. An attachment for an earth scooping bucket which has a body section and a plurality of teeth projecting therefrom along the forward lip of the body, the combination of a tooth having a pointed end constituting the forward end of said tooth, a support member attached to the rearward end of said tooth and extending rearwardly on both sides of said tooth and above and below said teeth of said bucket when said attachment is mounted on said bucket, a rearwardly faced abutment on said member on each side of said tooth and disposed offset to the vertical plane of the side of said tooth for engaging said lip of the bucket body when said attachment is mounted thereon, a connector attached to said member and adapted to be attached to said bucket at an underneath and rearward portion thereof for securing said member to said bucket with each said abutment engaged with said lip, said tooth and said member arranged to dispose said pointed end of said tooth forward of the projection of the front ends of said teeth of said bucket when said attachment is on said bucketv 3. An attachment for an earth scooping bucket which has a body and a plurality of permanent teeth projecting therefrom at the forward lip of the bottom section of said body, the combination of a tooth provided with a pointed end, a support member attached to said tooth at the end thereof opposite said pointed end and extending on both sides of said tooth and away from said pointed end thereof, said support member arranged for abutting said forward lip and overlapping said bottom nection of said bucket on both sides of the vertical plane of said tooth and for disposing said tooth forward of said permanent teeth, means included in said attachment for being disposed adjacent one of said permanent teeth of said bucket to restrict lateral movement of said attachment on said bucket, and connecting means attached to said member and adapted to be attached to said bucket for securing said member in the position for abutting said forward lip and overlapping said bottom section.

4. An attachment for an earth scooping bucket which has a body and a plurality of teeth projecting therefrom at the horizontal forward lip of the bottom section of said body, the combination of a tooth having a pointed end constituting the forward end of said tooth, a support member attached to said tooth and extending laterally and rearwardly thereof, said support member disposed in spaced apart portions for receiving one of said teeth of said bucket and disposed for abutting said forward lip of said bottom section of said bucket on both sides of said tooth, connecting means attached to said support member and adaptable to be removably attached to said bucket for securing said support member in the position for both receiving said one of said teeth and for abutting said forward lip, said spaced apart portions at the rearward end of said support member having vertically disposed openings for vertically snugly receiving said forward lip of said bottom section.

5. An attachment for an earth scooping bucket which has a body and a plurality of teeth projecting therefrom at the horizontal forward lip of the bottom section of said body, the combination of attaching means secured to the underside of said bottom section, a tooth having a pointed end constituting the forward end of said tooth, a support member attached to said tooth and extending laterally and rearwardly thereof for abutting said forward lip of said bottom section of said bucket on both sides of said tooth, connecting means attached to said support member and adaptable to be removably fastened to said attaching means of said bucket for securing said support member in the position for abutting said forward lip, a rearward portion of saidsupport member and a 5 6 portion of said connecting means formed to be vertically References Cited in the file of this patent spaced apart at the rearward end of said support member for vertically snugly receiving said forward lip of said UNITED STATES PATENTS bottom section, and means included in said attachment 1,197,104 Clark Sept. 5, 1916 for flanking one of said teeth of said bucket for restrict- 5 1,909,850 Youm'e May 16, 1933 ing lateral movement of said attachment on said bucket. 2,705,380 Hensley Apr. 5, 1955