US3426460A - Smooth bite attachment for a clam-shell bucket - Google Patents

Smooth bite attachment for a clam-shell bucket Download PDF

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US3426460A
US3426460A US609977A US3426460DA US3426460A US 3426460 A US3426460 A US 3426460A US 609977 A US609977 A US 609977A US 3426460D A US3426460D A US 3426460DA US 3426460 A US3426460 A US 3426460A
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attachment
clam
smooth
bucket
chain
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US609977A
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Walter D Hinkel
Russell G Hinkel Sr
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RUSSELL G HINKEL SR
WALTER D HINKEL
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RUSSELL G HINKEL SR
WALTER D HINKEL
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C3/00—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith and intended primarily for transmitting lifting forces to loose materials; Grabs
    • B66C3/02—Bucket grabs

Definitions

  • This invention relates to an attachment for certain earth moving machinery. More particularly it relates to a pair of devices to be removably attached to a clamshell bucket.
  • this invention is described as a smooth-bite attachment. It is intended to convert the standard clam-shell bucket for smoothing and other functions by providing a cover over the standard teeth thereof. While certain related expedients have been known in connection with other types of earth moving machinery, the present invention has particular advantages as to cost and speed of attaching and detaching.
  • a still further object of this invention is to provide a pair of easily attachable and detachable smooth-bite attachments adapted to fit over the teeth on each jaw of a clam-shell bucket, said attachments being secured by a chain, a hook attached to said chain, and a chain binder to tighten said chain.
  • FIGURE 1 is a side elevation view of a clam-shell bucket equipped with the smooth-bite attachments
  • FIGURE 2 is a front elevation view of a clam-shell bucket equipped with a smooth-bite attachment, taken along line 2-2 ofFIGURE 1;
  • FIGURE 3 is a partially fragmented view, partially in cross-section, taken along line 33 of FIGURE 2, of a detail of the smooth-bite attachment fitted over a bucket tooth.
  • This invention is primarily concerned with converting the normally toothed biting edge of the clam-shell bucket into a smooth edge for the purpose of facilitating certain earth operations such as smoothing.
  • Each attachment is essentially a cover or shield which fits over the teeth and is firmly affixed to the bucket structure. It is important that the attachment be rugged, be easily attached and detached, and be capable of fitting a wide variety of buckets without any extensive modification or elaborate adjustment procedures. 7
  • a clam-shell bucket is generally designated by reference numeral 100. Parts of this bucket not specifically important in connection with this invention are not further identified, since the clam-shell bucket is an item well known in the art.
  • the bucket 100 includes a pair of jaws 20. Each of the jaws 20 comprises an upper jaw 24 and a lower jaw 21. A plurality of teeth 22 are aflixed to each lower jaw 21. It is a common expedient to fasten the teeth 22 to lower jaw 21 by means of rivets or bolts, as best shown in FIGURE 2. While in many cases it might be theoretically possible to convert the jawed clam-shell bucket to a smooth-bite clam-shell bucket by individually removing each tooth 22 by unbolting, as a practical matter this is not feasible for a number of reasons.
  • each jaw In the typical clam-shell bucket illustrated in FIGURE 2, three teeth 22 are provided on each jaw. It is understood that a bucket may have a greater or lesser number of teeth 22 which may be spaced in different ways. It is also apparent that the length of projections of each tooth 22 beyond the lower edge of lower jaw 21 may vary in different clam-shell buckets. It is therefore necessary that the attachment of the present invention be capable of adapting to various length teeth.
  • the smooth-bite attachment is generally designated by reference numeral 10.
  • a major part of attachment 10 is the cover or shield 12.
  • the structure of the shield 12 is best understood in connection with FIGURES 2 and 3.
  • Shield 12 is fabricated of a generally rectangular sheet of heavy gauge metal. -It comprises a perforated section 12A.
  • the perforated section 12A is unitary with the remainder of shield 12. From the bottom edge of perforated section 12A, shield 12 then is bent outwardly as shown in FIGURE 3 so that the interior angle between the bent portion and the perforated section 12A is obtuse. Thereafter, at the lower edge of the bent portion, shield 12 is bent upwardly and outwardly to form outward section 12B which is at an acute angle with the adjoining portion of shield 12.
  • a cap or closure 11 is aflixed to complete the pocket.
  • This cap 11 takes the form of a generally triangular piece of heavy guage metal, preferably welded to shield 12. The main function of the cap 11 is to re-enforce shield 12.
  • Each perforated plate 12A is provided with a pair of holding holes 16. As best shown in FIGURE 2, these holding holes 16 are located near the ends of shield 12 and have the function of receiving the attaching means whereby the shield 12 is removably attached to clam-shell bucket.
  • the attaching means preferably comprises a chain 17 arranged to form a yoke. At each end of the chain a hook 17A is provided. Each hook 17A may be inserted and hooked into its holding hole 16 as best shown in FIGURE 2. Chain 17 is attached at about its mid-point to a chain binder 18.
  • the chain binder 18 is a device well known in the art by means of which a chain may be put under tension or released from tension by the cam and lever action actuated by its handle. It is understood that the illustrated chain binder is merely a preferable means of loosening or tightening chain 17, and that equivalent means, such as turnbuckles, are also suitable.
  • the particular chain binder shown has the advantage of speed of operation.
  • chain binder 18 terminates in a 3 heavy hook 19 which is adapted to fit over the upper jaw 24 of the jaw 20 of clam-shell bucket 100.
  • a plurality of bolt holes 15 are provided therein.
  • a typical and preferred arrangement is a series of groups of four such holes 15 arranged along the length of perforated section 12A.
  • a plurality of extensions 14 are fastened to the outer surface of perforated plate 12A by means of bolts 13.
  • each extension 14 may be provided to secure each extension 14 to perforated plate 12A by means of the matching holes in the extensions and in the perforated plate.
  • FIGURE 2 It is apparent from FIGURE 2 that upon preparing a smooth-bite attachment for fitting to a particular bucket 100, it is necessary to attach the extensions 14 so that they fall between teeth 22 when in the installed and attached position.
  • the plurality of holes 15 are provided to permit this adjustment. Once this adjustment is made and the extensions attached, the extensions may be left permanently in that position as long as the attachment 10 is used on the same or a similar bucket 100. It may also be necessary to adjust the length of chain 17 to fit a particular bucket.
  • the smooth-bite attachment 10 is installed on each jaw of the clam-shell buoket by slipping the teeth 22 of the bucket into the pocket formed in shield 12.
  • the upper edge of perforated plate 12A is positioned inwardly of teeth 22 and abuts the lower edge of jaw 21 of the bucket 100.
  • the extensions 14 are thus positioned against the outer surface of lower jaw 21, between teeth 22. These extensions 14 help to hold the smooth-bite attachment 10 firmly in position.
  • Heavy hook 19 on the attaching means is hooked over upper jaw 24 as shown and the chain binder 18 is tightened to hold the attachment 10 snugly against the jaw 20.
  • the attachment 10 may be installed on a clam-shell bucket merely by operating the chain binder, and may be removed in the same manner.
  • the clam-shell bucket 100 may be rapidly converted from its normal toothed jaw to a smooth jaw without the necessity of tedious fastening procedures.
  • a smooth-bite attachment for a clam-shell bucket said bucket having a jaw provided with a plurality of teeth extending therefrom; said attachment comprising a metal shield bent to form a pocket, said shield having an outer section adapted to bear against one side of said teeth, and a perforated section adapted to bear against the other side of said teeth, said perforated section being longer than said outer section, a cap connecting said outer section and said perforated section at each end of said shield, a plurality of holes in said perforated section, a plurality of extensions, each said extension being equipped with means removably connecting said extension to a.

Description

Feb. 11, 1969 w, HINKEL ETAL 3,426,460
SMOOTH BITE ATTACHMENT FOR A SLAM-SHELL BUCKET Filed Dec. 14, 1966 INVENTORS RUSSELL e. HINKEL, SR.
WALTER D. HINKEL A TTORNEY United States Patent 3,426,460 SMOOTH BITE ATTACHMENT FOR A CLAM-SHELL BUCKET Walter D. Hinkel, Philadelphia, Pa. (2410 High Road,
Huntingdon Valley, Pa. 19006), and Russell G. Hinkel, Sr., 3277 Parkview Drive, Bensalem Township, Pa. Substituted for abandoned application Ser. No. 107,819, May 4, 1961. This application Dec. 14, 1966, Ser. No. 609,977 US. Cl. 37184 1 Claim Int. Cl. B66c 3/02; E02f 9/28 This application is a substitute for abandoned application Ser. No. 107,819.
This invention relates to an attachment for certain earth moving machinery. More particularly it relates to a pair of devices to be removably attached to a clamshell bucket.
Throughout the specification and claims, this invention is described as a smooth-bite attachment. It is intended to convert the standard clam-shell bucket for smoothing and other functions by providing a cover over the standard teeth thereof. While certain related expedients have been known in connection with other types of earth moving machinery, the present invention has particular advantages as to cost and speed of attaching and detaching.
It is an object of this invention to provide a smoothbite attachment to a clam-shell bucket.
It is another object of this invention to provide a pair of smooth bite attachments to a clam-shell bucket with coaction between said attachments.
It is yet another object of this invention to provide a smooth-bite attachment over the teeth on each jaw of a clam-shell bucket.
A still further object of this invention is to provide a pair of easily attachable and detachable smooth-bite attachments adapted to fit over the teeth on each jaw of a clam-shell bucket, said attachments being secured by a chain, a hook attached to said chain, and a chain binder to tighten said chain.
Other aims and objects of this invention are made apparent herein.
The invention is best understood in connection with the accompanying drawings, in which like reference numerals refer to like parts and in which:
FIGURE 1 is a side elevation view of a clam-shell bucket equipped with the smooth-bite attachments;
FIGURE 2 is a front elevation view of a clam-shell bucket equipped with a smooth-bite attachment, taken along line 2-2 ofFIGURE 1;
FIGURE 3 is a partially fragmented view, partially in cross-section, taken along line 33 of FIGURE 2, of a detail of the smooth-bite attachment fitted over a bucket tooth.
This invention is primarily concerned with converting the normally toothed biting edge of the clam-shell bucket into a smooth edge for the purpose of facilitating certain earth operations such as smoothing. Each attachment is essentially a cover or shield which fits over the teeth and is firmly affixed to the bucket structure. It is important that the attachment be rugged, be easily attached and detached, and be capable of fitting a wide variety of buckets without any extensive modification or elaborate adjustment procedures. 7
As is explained in more detail below, when it is desired to provide a pair of the smooth-bite attachments of this invention on a clam-shell bucket, it may be necessary to make one adjustment of bolted parts to provide a proper fit, and thereafter, no bolting need be done to attach and detach the smooth-bite attachment. The advantages of this structure include increased speed and ease of attachment and detachment, elimination of possible misplacement of bolts and nuts on the job, and avoidance of ditfi- 3,426,460 Patented Feb. 11, 1969 "ice culties following the probable corrosion of bolts and nuts 1n use.
A clam-shell bucket is generally designated by reference numeral 100. Parts of this bucket not specifically important in connection with this invention are not further identified, since the clam-shell bucket is an item well known in the art. The bucket 100 includes a pair of jaws 20. Each of the jaws 20 comprises an upper jaw 24 and a lower jaw 21. A plurality of teeth 22 are aflixed to each lower jaw 21. It is a common expedient to fasten the teeth 22 to lower jaw 21 by means of rivets or bolts, as best shown in FIGURE 2. While in many cases it might be theoretically possible to convert the jawed clam-shell bucket to a smooth-bite clam-shell bucket by individually removing each tooth 22 by unbolting, as a practical matter this is not feasible for a number of reasons. In the typical clam-shell bucket illustrated in FIGURE 2, three teeth 22 are provided on each jaw. It is understood that a bucket may have a greater or lesser number of teeth 22 which may be spaced in different ways. It is also apparent that the length of projections of each tooth 22 beyond the lower edge of lower jaw 21 may vary in different clam-shell buckets. It is therefore necessary that the attachment of the present invention be capable of adapting to various length teeth.
The smooth-bite attachment is generally designated by reference numeral 10. A major part of attachment 10 is the cover or shield 12. The structure of the shield 12 is best understood in connection with FIGURES 2 and 3. Shield 12 is fabricated of a generally rectangular sheet of heavy gauge metal. -It comprises a perforated section 12A. The perforated section 12A is unitary with the remainder of shield 12. From the bottom edge of perforated section 12A, shield 12 then is bent outwardly as shown in FIGURE 3 so that the interior angle between the bent portion and the perforated section 12A is obtuse. Thereafter, at the lower edge of the bent portion, shield 12 is bent upwardly and outwardly to form outward section 12B which is at an acute angle with the adjoining portion of shield 12. It is apparent that the outward section 123 and the adjoining portion of the shield 12 together form a pocket into which teeth 22 may be inserted. The bends in shield 12 are provided to approximate as near as may be the angled ends of typical teeth 22. This is best illustrated in FIGURE 3.
At each end of the pocket formed in shield 12, a cap or closure 11 is aflixed to complete the pocket. This cap 11, as best illustrated in FIGURES 1 and 2, takes the form of a generally triangular piece of heavy guage metal, preferably welded to shield 12. The main function of the cap 11 is to re-enforce shield 12.
Each perforated plate 12A is provided with a pair of holding holes 16. As best shown in FIGURE 2, these holding holes 16 are located near the ends of shield 12 and have the function of receiving the attaching means whereby the shield 12 is removably attached to clam-shell bucket.
The attaching means preferably comprises a chain 17 arranged to form a yoke. At each end of the chain a hook 17A is provided. Each hook 17A may be inserted and hooked into its holding hole 16 as best shown in FIGURE 2. Chain 17 is attached at about its mid-point to a chain binder 18.
The chain binder 18 is a device well known in the art by means of which a chain may be put under tension or released from tension by the cam and lever action actuated by its handle. It is understood that the illustrated chain binder is merely a preferable means of loosening or tightening chain 17, and that equivalent means, such as turnbuckles, are also suitable. The particular chain binder shown has the advantage of speed of operation.
The upper portion of chain binder 18 terminates in a 3 heavy hook 19 which is adapted to fit over the upper jaw 24 of the jaw 20 of clam-shell bucket 100.
Referring again to FIGURE 2 and perforated section 12A it is seen that a plurality of bolt holes 15 are provided therein. A typical and preferred arrangement is a series of groups of four such holes 15 arranged along the length of perforated section 12A. A plurality of extensions 14 are fastened to the outer surface of perforated plate 12A by means of bolts 13.
Typically, as shown, four bolts 13 may be provided to secure each extension 14 to perforated plate 12A by means of the matching holes in the extensions and in the perforated plate.
It is apparent from FIGURE 2 that upon preparing a smooth-bite attachment for fitting to a particular bucket 100, it is necessary to attach the extensions 14 so that they fall between teeth 22 when in the installed and attached position. The plurality of holes 15 are provided to permit this adjustment. Once this adjustment is made and the extensions attached, the extensions may be left permanently in that position as long as the attachment 10 is used on the same or a similar bucket 100. It may also be necessary to adjust the length of chain 17 to fit a particular bucket.
After the above adjustments are made, the smooth-bite attachment 10 is installed on each jaw of the clam-shell buoket by slipping the teeth 22 of the bucket into the pocket formed in shield 12. The upper edge of perforated plate 12A is positioned inwardly of teeth 22 and abuts the lower edge of jaw 21 of the bucket 100. The extensions 14 are thus positioned against the outer surface of lower jaw 21, between teeth 22. These extensions 14 help to hold the smooth-bite attachment 10 firmly in position. Heavy hook 19 on the attaching means is hooked over upper jaw 24 as shown and the chain binder 18 is tightened to hold the attachment 10 snugly against the jaw 20.
It is apparent that the attachment 10 may be installed on a clam-shell bucket merely by operating the chain binder, and may be removed in the same manner. Thus, the clam-shell bucket 100 may be rapidly converted from its normal toothed jaw to a smooth jaw without the necessity of tedious fastening procedures. Other advantages of this present structure over prior expedients have been pointed out above.
The scope of this invention is to be determined by the appended claim and is not to be limited to the specific embodiment shown and illustrated which is intended to be illustrative and not limiting.
We claim:
1. A smooth-bite attachment for a clam-shell bucket, said bucket having a jaw provided with a plurality of teeth extending therefrom; said attachment comprising a metal shield bent to form a pocket, said shield having an outer section adapted to bear against one side of said teeth, and a perforated section adapted to bear against the other side of said teeth, said perforated section being longer than said outer section, a cap connecting said outer section and said perforated section at each end of said shield, a plurality of holes in said perforated section, a plurality of extensions, each said extension being equipped with means removably connecting said extension to a. selected hole of said plurality of holes, a chain yoke attached to said perforated section, a chain binder attached to the middle of said chain yoke, a hook attached to that portion of the chain binder remote from the chain yoke, and adapted to hold said smooth-bite attachment to said jaw.
References Cited UNITED STATES PATENTS 243,449 6/ 1 881 Irnhorst 37-187 842,221 1/ 1907 Martin 294-5l 947,964 2/1910 Collins et al. -37-117.5 X
969,307 9/1910 Sumerlin 3'7-117.5 X 1,762,946 6/1930 Atkinson 37-184 X 2,555,752 6/1951 Merola 29451 2,613,912 10/1952 Jordan 37--l17.5 X 2,783,558 3/1957 Morgan 3798 2,952,929 9/1960 Lindberg 37117.5 X 3,039,210 6/ 1962 Slaughter 37117.5 3,043,032 7/1962 Discenza 37-117.5
FOREIGN PATENTS 563,430 11/1932 Germany.
1,095,756 12/ 1960 Germany.
WILLIAM B. PENN, Primary Examiner.
EDGAR S. BURR, Assistant Examiner.
US. Cl. XzR. 37-1175

Claims (1)

1. AN SMOOTH-BITE ATTACHMENT FOR A CLAM-SHELL BUCKET, SAID BUCKET HAVING A JAW PROVIDED WITH A PLURALITY OF TEETH EXTENDING THEREFROM; SAID ATTACHMENT COMPRISING A METAL SHIELD BENT TO FORM A POCKET, SAID SHIELD HAVING AN OUTER SECTION ADAPTED TO BEAR AGAINST ONEE SIDE OF SAID TEETH, AND A PERFORATED SECTION ADAPTED TO BEAR AGAINST THE OTHER SIDE OF SAID TEETH, SAID PERFORATED SECTION BEING LONGER THAN SAID OUTER SECTION, A CAP CONNECTING SAID OUTER SECTION AND SAID PERFORATED SECTION AT EACH END OF SAID SHIELD, A PLURALITY OF HOLES IN SAID PERFORATED SECTION, A PLURALITY OF EXTENSIONS, EACH SAID EXTENSION BEING EQUIPPED WITH MEANS REMOVABLY CONNECTING SAID EXTENSION TO A SELECTED HOLE OF SAID PLURALITY OF HOLES, A CHAIN YOKE ATTACHED TO SAID PERFORATED SECTION, A CHAIN BINDER ATTACHED TO THE MIDDLE OF SAID CHAIN YOKE, A HOOK ATTACHED TO THAT PORTION OF THE CHAIN BINDER REMOTE FROM THE CHAIN YOKE, AND ADAPTED TO HOLD SAID SMOOTH-BIT ATTACHMENT TO SAID JAW.
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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5472249A (en) * 1994-01-24 1995-12-05 Fiedler; Paul H. Excavator grapple scoop attachment
US6523284B1 (en) * 2000-02-14 2003-02-25 Scot J. Clugston Multi-purpose material handling apparatus
US20140373400A1 (en) * 2011-12-30 2014-12-25 Caterpillar Inc. Wear pad assembly

Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US243449A (en) * 1881-06-28 Feedinand imhoest
US842221A (en) * 1906-05-04 1907-01-29 Fenton N Martin Snow-shovel attachment for pitchforks.
US947964A (en) * 1909-02-01 1910-02-01 Henry G Collins Hay or manure loading machine.
US969307A (en) * 1910-04-12 1910-09-06 Henry C Sumerlin Combination fork and shovel.
US1762946A (en) * 1926-06-04 1930-06-10 Hayward Co Bucket or grapple
DE563430C (en) * 1932-11-04 Heinrich Weilmuenster 6 Protection device for forks
US2555752A (en) * 1948-05-15 1951-06-05 Merola Anthony Shovel
US2613912A (en) * 1950-07-24 1952-10-14 L W Burgess Fence post setting and pulling rig
US2783558A (en) * 1955-02-14 1957-03-05 George C Morgan Trenching attachment for excavating buckets
US2952929A (en) * 1959-03-16 1960-09-20 Isaacson Iron Works Ripper tooth
DE1095756B (en) * 1958-05-19 1960-12-22 Braunkohlen Und Brikett Ind Ag Digging tool
US3039210A (en) * 1960-07-25 1962-06-19 James B Slaughter Adjustable ripper tooth for power shovels
US3043032A (en) * 1960-06-30 1962-07-10 Discenza Nelson Back-filling blade for a power shovel

Patent Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US243449A (en) * 1881-06-28 Feedinand imhoest
DE563430C (en) * 1932-11-04 Heinrich Weilmuenster 6 Protection device for forks
US842221A (en) * 1906-05-04 1907-01-29 Fenton N Martin Snow-shovel attachment for pitchforks.
US947964A (en) * 1909-02-01 1910-02-01 Henry G Collins Hay or manure loading machine.
US969307A (en) * 1910-04-12 1910-09-06 Henry C Sumerlin Combination fork and shovel.
US1762946A (en) * 1926-06-04 1930-06-10 Hayward Co Bucket or grapple
US2555752A (en) * 1948-05-15 1951-06-05 Merola Anthony Shovel
US2613912A (en) * 1950-07-24 1952-10-14 L W Burgess Fence post setting and pulling rig
US2783558A (en) * 1955-02-14 1957-03-05 George C Morgan Trenching attachment for excavating buckets
DE1095756B (en) * 1958-05-19 1960-12-22 Braunkohlen Und Brikett Ind Ag Digging tool
US2952929A (en) * 1959-03-16 1960-09-20 Isaacson Iron Works Ripper tooth
US3043032A (en) * 1960-06-30 1962-07-10 Discenza Nelson Back-filling blade for a power shovel
US3039210A (en) * 1960-07-25 1962-06-19 James B Slaughter Adjustable ripper tooth for power shovels

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5472249A (en) * 1994-01-24 1995-12-05 Fiedler; Paul H. Excavator grapple scoop attachment
US6523284B1 (en) * 2000-02-14 2003-02-25 Scot J. Clugston Multi-purpose material handling apparatus
US20140373400A1 (en) * 2011-12-30 2014-12-25 Caterpillar Inc. Wear pad assembly
US9469975B2 (en) * 2011-12-30 2016-10-18 Caterpillar Inc. Wear pad assembly

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