US3333717A - Attachment for load-handling machinery - Google Patents

Attachment for load-handling machinery Download PDF

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US3333717A
US3333717A US51408465A US3333717A US 3333717 A US3333717 A US 3333717A US 51408465 A US51408465 A US 51408465A US 3333717 A US3333717 A US 3333717A
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boom
jaw
arm
movement
end
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Charles A Scaperotto
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Charles A Scaperotto
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    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02FDREDGING; SOIL-SHIFTING
    • E02F3/00Dredgers; Soil-shifting machines
    • E02F3/04Dredgers; Soil-shifting machines mechanically-driven
    • E02F3/96Dredgers; Soil-shifting machines mechanically-driven with arrangements for alternate or simultaneous use of different digging elements
    • E02F3/963Arrangements on backhoes for alternate use of different tools

Description

Aug. 1, 1967 c. A. SCAPEROTTO 3,333717 ATTACHMENT FOR LOAD-HANDLING MACHINERY Filed Dec. 15, 1965 2 Sheets-Sheet 1 fig. 1.

I'NVENTORZ CHARLES AL-SCAPEROTTO ATTY5.

1, 1957' c. A. SCAPEROTTO 3,333,717

ATTACHMENT FOR LOAD-HANDLING MACHINERY Filed Dec. 15, 1965 2 SheetsSheet 2 mvgwron: CHAR LES A. SCAPEROTTO BY MW AT YS- United States Patent 3,333,717 ATTACHMENT FOR LOAD-HANDLING MACHINERY Charles A. Scaperotto, 931 Kenmore Road, Philadelphia, Pa. 19151 Filed Dec. 15, 1965, Ser. No. 514,084 3 Claims. (Cl. 214-147) ABSTRACT OF THE DISCLOSURE A crane boom for attachment to the end of the bucket arm of a backhoe. The crane boom has a pair of gripping jaws at its outer end which can be moved toward or away from one another to grab or release an article and are connected by means of linkage mechanism to the bucket cylinder so that actuation of the bucket cylinder will cause movement of the jaws.

The present invention relate to new and useful improvements in attachments for load-handling machines such as backhoes and more particularly to new and useful improvements in a boom structure which may be attached to a load-handling machine such as a backhoe to increase the utility and versatility of the machine.

At the present time, backhoes are used extensively for excavation in construction work, In many instances while the excavating is being done, the site is being prepared for later construction by the delivery of material and supplies and performing certain of the building operations. When this occurs, the contractor normally has to transport a small crane or hoist to the building site to help with the unloading of material and supplies and the initial construction work even though he might have one or more backhoes or similar equipment available at the site.

With the foregoing in mind, a primary object of the present invention is to provide a novel attachment for load-handling machinery such as backhoes which may be readily and easily attached to the machine to permit the performance of a variety of lifting and hoisting functrons.

Another object of the present invention is to provide a novel boom structure which may be secured to a backhoe in place of the usual bucket, may be easily controlled by the operator of the machine and which may be used to grab, lift and move heavy loads.

A still further object of the present invention is to provide a novel boom which may be used in conjunction with a backhoe or similar machine and which is of relatively simple construction and may be manufactured easily and cheaply.

These and other objects of the present invention and the various features and details of the operation and construction thereof are hereinafter more fully set forth and described with reference to the accompanying drawings, in which:

FIG. 1 is a schematic view of a conventional backhoe prior to attachment of the boom structure of the present invention;

FIG. 2 is a perspective view of a boom made in accordance with the present invention;

FIG. 3 is a fragmentary view of a portion of a backhoe with the boom of the present invention secured thereto and utilized to lift a piece of construction material;

FIG. 4 is a fragmentary side elevational view similar to FIG. 3 showing the boom of the present invention used in conjunction with a backhoe for moving and placing a piece of construction material;

FIG. 5 is an enlarged fragmentary longitudinal sectional view showing the construction of the outer end of ICC one form of boom made in accordance with the present invention;

FIG. 6 is a fragmentary sectional view taken on line 66, FIG. 5;

FIG. 7 is a transverse sectional view taken on line 7-7, FIG. 5; and

FIG. 8 is a fragmentary longitudinal sectional view taken on line 8-8, FIG. 2.

Referring more specifically to the drawings and FIG. 1, there is shown a conventional backhoe comprising a tractor 10 having a boom 11 mounted thereon in such a manner that the operator may effect pivotal movement of the boom 11 about both horizonal and vertical axes. A bucket arm 12 is mounted at the outer end of the boom 11 for pivotal movement about a horizontal axis. The bucket 13, in turn, is mounted at the outer end of the bucket arm 12 for pivotal movement about a horizontal axis. Pivotal movement of the boom 11, bucket arm 12 and bucket 13 about their horizontal axes is accomplished by a hydraulic boom cylinder 14, a hydraulic bucket arm cylinder 15 and a hydraulic bucket cylinder 16, respectively, all of which may be controlled by the operator'from conventional controls on the tractor 10.

In accordance with the present invention, a crane boom 17, as shown in FIG. 2, is provided which may be secured to the outer end of the bucket arm 12 in place of the bucket. The crane boom 17 may have a box frame structure comprising longitudinal side panels 18, 18, a top panel 19 and a bottom panel 20. Extending between the inner ends of the side panels 18 is a tube 21 which provides a bushing for a pivot pin 22 by means of which the crane boom 17 is pivotally secured to the outer end of the bucket arm 12 as shown in FIG. 4. A pair of bucket cylinder links 23, 23 extending from the end of the piston rod of the bucket cylinder 16 are pivotally secured as shown in FIG. 8 to opposite ends of an actuating pin 24 which extends transversely between the opposite side panels 18, 18 of the crane boom 17. The ends of the actuating pin 24 project outwardly beyond the side panels 18, 18 through substantially longitudinal slots 25, 25 formed in the side panels 18, 18. This provides, in effect, a lost motion linkage between the bucket cylinder and the crane boom. During normal operation, as the piston of the bucket cylinder 16 is retracted, the actuating pin 24 will be pulled toward the ends of the slots 25, 25 adjacent the inner end of the crane boom 17 and upon engagement of the actuating pin 24 with the ends of the slots 25, 25, the crane boom will be pivoted upwardly about its pivot pin 22. If desired, a lifting hook 26 may be secured to the bottom panel of the crane boom 17 to permit the lifting and moving of bulk loads of material by engaging cables or chains surrounding the load with the book 26.

An important feature of the present invention is the provision of novel gripping jaws at the outer end of the crane boom which may be caused to close about an article being lifted or moved and which are controlled by the operation of the bucket cylinder 16. This jaw structure includes a stationary and a movable jaw, with the movable jaw being interconnected by operating mechanism as more fully described hereinafter to the actuating pin 24 so that the initial retraction of the bucket cylinder 16 will cause the movable jaw to move inwardly toward the stationary jaw to securely grip the article to be moved. Thereafter, further retraction of the piston of the bucket cylinder 15 will cause the desired movement of the crane boom 17. Conversely, if an article has been gripped and lifted by the jaw structure at the outer end of the crane boom, the jaws may be caused to release the article by advancing the piston of the bucket cylinder 16.

The jaw structure at the end of the crane boom 17, as illustrated in FIGS. 5, 6 and 7 of the drawings, includes a pair of flanged side plates 27, 27 welded or otherwise secured to the ends of the top and bottom panels 19 and 20 as indicated at 28. A base plate 29 having a central opening 30 therein is riveted or otherwise secured to the flanges of the side plates 27, 27 with the base plate being spaced from the flanges of the side plates by a plurality of spacer lugs 31 as shown in FIG. 7. The stationary jaw 33 extends transversely of the base plate 29 and is bolted or otherwise secured directly to the base plate as indicated at 34. If desired, a series of bolt holes 37 may be provided in the base plate 29 to permit longitudinal adjustment of the stationary jaw 33, permitting the jaw structure to grip a wide variety of sizes of material. The movable jaw element 37 is bolted or otherwise secured to the base of a U-shaped supporting yoke 38 which is slidably mounted between the base plate 29 and the flanges of the side plates 27. The yoke 38 includes a pair of spaced arallel side arm portions 39, 39 which have a series of uniformly spaced teeth 40 in the upper surface thereof forming a rack extending the full length thereof. The outer side edges of each of the arms 39 are beveled as shown in FIG. 6 and are received within a series of concavely tapered guide rollers 41 which are rotatably mounted as indicated at 42 between the upper surface of the base plate 30 and the lower surface of the flanges of the side plates 27. These rollers 41 support the yoke 38 and permit free longitudinal movement of the yoke 38 and the movable jaw 37 relative to the base plate 30 and the stationary jaw 33.

Longitudinal movement of the yoke 38 and movable jaw 37 is effected by a pair of pinions 43, 43 keyed or otherwise fixed to a sleeve 44 rotatably mounted on a pinion shaft 44a which extends between the side plates 27, 27 The pinions are positioned in engagement with the teeth 40 on the arms of the yoke 38 and carry between them a chain sheave 45 about which a conventional link chain 46 passes. The link chain 46 has one end thereof connected to a tension spring 47 carried by the frame of the crane boom 17 and the other end thereof secured to a connecting rod 48. The connecting rod 48, in turn, is secured to the actuating pin 24, as shown in FIG. 8.

With this construction, as the actuating pin 24 is moved by means of the bucket cylinder toward the inner end of the crane boom 17, the link chain 46 causes rotation of the chain sheave 45 and pinions 43, 43 in the clockwise direction relative to FIG. 5. This in turn moves the yoke 38 and the movable jaw 37 to the left relative to FIG. 5, toward the stationary jaw 33. Upon release of any pressure on the actuating pin due to the weight of the crane boom and upon outward movement of the piston rod of the bucket cylinder 16, the tension spring 47 will pull the link chain 46 around the chain sheave 45 thereby causing counterclockwise rotation of the chain sheave and pinions moving the movable jaw 37 to the right relative to FIG. away from the stationary jaw and releasing the article supported by the jaw. If desired, a safety cable 49 may be positioned centrally of the tension spring 47 to prevent the chain from becoming disengaged from the chain sheave should the tension spring break or otherwise become distorted.

FIGS. 3 and 4 illustrate one of many possible uses of this invention. In the application of this invention as shown in FIGS. 3 and 4, a backhoe including a crane boom 17 is being used to lift shoring boards 50 from a stack of boards and stand the shoring boards in a vertical position within a trench which has previously been dug by the backhoe.

In performing this operation, the operator of the backhoe will move the backhoe to a position adjacent the stack of shoring boards and lower the jaw structure of the crane boom 17 to a position in engagement with the uppermost board of the stack of shoring boards. The operator will then advance the piston of the bucket cylinder 16, causing the jaws to open with the movable jaw on one side of the shoring board and the stationary jaw at the opposite side of the shoring board. The operator will thereafter retract the piston of the bucket cylinder 16 causing the movable jaw to move toward the stationary jaw until the shoring board is securely gripped.

Thereafter, further retraction of the bucket cylinder will pivot the crane boom 17 in the counterclockwise direction relative to FIG. 3. Simultaneously with this, the crane operator will also pivot the bucket arm 12 upwardly by retracting the piston of the bucket arm cylinder until the shoring board is in the desired vertical elevated position.

The operator will then transport the shoring board to the desired position and by the proper manipulation of the controls of the backhoe, lower the shoring board into the trench as shown in broken lines in FIG. 4. After the shoring board is in the desired position, the operator will advance the piston of the bucket cylinder so that the weight of the shoring board is supported by the trench permitting the tension spring 47 to move the movable jaw out of engagement with the shoring board. This procedure may then be repeated to place subsequent shoring boards into the trench.

From the foregoing it will be observed that the present invention provides a novel attachment for load-handling machines such as backhoes which substantially increases the utility and versatility of the machine and permits the machine to perform a variety of lifting and hoisting functions.

While a particular embodiment of the present invention has been illustrated and described herein, it is not intended to limit the invention to such a disclosure and changes and modifications may be incorporated and embodied therein within the scope of the following claims.

I claim:

1. A crane boom for pivotal attachment to an existing boom having a selectively controlled operating member thereon; said crane boom comprising a boom arm, means at the inner end of said arm to pivotally mount said arm to the outer end of said existing boom, a pair of jaw members carried by the outer end of said arm, at least one of said jaw members mounted for relative movement toward and away from the other jaw member, a pin slidably mounted for limited movement substantially longitudinally of said arm, said operating member being connected to said pin, and a link having one end thereof connected to said pin and the other end thereof interconnected with said one jaw member to cause movement of said one jaw member relative to said other jaw member upon movement of said operating members.

2. A crane boom in accordance with claim 1 including a rotatable member interconnected with said jaw to cause sliding movement of said jaw upon rotation of said rotatable member, and means connecting said other end of said link to said rotatable member to cause rotation of said rotatable member.

3. A crane boom in accordance with claim 2 wherein spring means are connected to said rotatable member to normally urge said rotatable member to rotate in a direction to cause said one jaw to move away from said other aw.

References Cited UNITED STATES PATENTS 2,814,396 11/1957 Neale 2143 2,831,589 4/ 1958 Way 214-147 3,221,908 12/1965 Larson 214147 3,273,729 9/1966 Holopainen 214-138 3,275,172 9/1966 Smith 214138 3,278,058 10/ 1966 Symmank 2l4147 HUGO O. SCHULZ, Primary Examiner.

Claims (1)

1. A CRANE BOOM FOR PIVOTAL ATTACHMENT TO AN EXISTING BOOM HAVING A SELECTIVELY CONTROLLED OPERATING MEMBER THEREON; SAID CRANE BOOM COMPRISING A BOOM ARM, MEANS AT THE INNER OUTER END OF SAID EXISTING BOOM, A PAIR OF JAW ARM TO THE OUTER END OF SAID EXISTING BOOM, A PAIR OF JAW MEMBERS CARRIED BY THE OUTER END OF SAID ARM, AT LEAST ONE OF SAID JAW MEMBERS MOUNTED FOR RELATIVE MOVEMENT TOWARD AND AWAY FROM THE OTHER JAW MEMBER, A PIN SLIDABLY MOUNTED FOR LIMITED MOVEMENT SUBSTANTIALLY LONGITUDINALLY OF SAID ARM, SAID OPERATING MEMBER BEING CONNECTED TO SAID PIN, AND A LINK HAVING ONE END THEREOF CONNECTED TO SAID PIN AND THE OTHER END THEREOF INTERCONNECTED WITH SAID ONE JAW MEMBER TO CAUSE MOVEMENT OF SAID ONE JAW MEMBER RELATIVE TO SAID OTHER JAW MEMBER UPON MOVEMENT OF SAID OPERATING MEMBERS.
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Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3524560A (en) * 1968-01-10 1970-08-18 Thomas R Hall All-purpose boom construction
US3633771A (en) * 1970-08-05 1972-01-11 Moore Corp Lee C Apparatus for moving drill pipe into and out of an oil well derrick
US3834560A (en) * 1972-05-11 1974-09-10 A Miller Pole holding and setting device
US4033080A (en) * 1976-01-20 1977-07-05 Nippon Concrete Industries Co. Ltd. Concrete pole to be connected with a wood pole and method of replacing the lower part of the wood pole with the concrete pole
FR2368604A1 (en) * 1976-10-19 1978-05-19 Perrier Henri Hydraulic mining prop placing equipment - comprises mobile machine with extensible boom and hydraulic system for supplying pressure fluid to prop
US4645410A (en) * 1984-06-04 1987-02-24 Julien Royer Blade-equipped vehicle tree gripping means
EP0310610A1 (en) * 1986-04-07 1989-04-12 LaBOUNTY, Roy Edward Auto body crushing device
US20060061113A1 (en) * 2004-09-21 2006-03-23 Hansen David K Lifting apparatus
US20070134075A1 (en) * 2005-12-13 2007-06-14 Nathan Bunting Vehicle for setting utility poles in a remote location
US20100308609A1 (en) * 2007-08-31 2010-12-09 Lavalley Industries, Llc Gripping assembly and gripping members for a grapple attachment
US20100329823A1 (en) * 2009-06-29 2010-12-30 Tts Sense Canada, Ltd. Method and apparatus for delivery of a tubular to a drilling apparatus
US7950709B1 (en) * 2008-03-27 2011-05-31 Orange Township Products L.P.A. Method and apparatus for gripping and installing pipe
WO2012054961A1 (en) * 2010-10-26 2012-05-03 John Eugene Hough Mobile lifting device with auxiliary lifting attachment
US20150047862A1 (en) * 2013-08-16 2015-02-19 Curtis Hull Multi-purpose grasping attachment accessory
US20150047861A1 (en) * 2013-08-16 2015-02-19 Curtis Hull Multi-purpose grasping attachment
US9073732B2 (en) 2012-07-27 2015-07-07 Lavalley Industries, Llc Grab arm housing for grapple attachment

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2814396A (en) * 1955-02-21 1957-11-26 Sr Dory J Neale Portable crane for handling and setting poles
US2831589A (en) * 1956-02-28 1958-04-22 Glenn W Way Articulated boom for mobile crane
US3221908A (en) * 1964-02-25 1965-12-07 Beloit Corp Material handling device
US3273729A (en) * 1965-01-04 1966-09-20 Clamping device
US3275172A (en) * 1965-05-04 1966-09-27 Wrex All Implements Inc Wrecking and loading tool for use with a back hoe
US3278058A (en) * 1964-05-21 1966-10-11 Yumbo Hoisting machine

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2814396A (en) * 1955-02-21 1957-11-26 Sr Dory J Neale Portable crane for handling and setting poles
US2831589A (en) * 1956-02-28 1958-04-22 Glenn W Way Articulated boom for mobile crane
US3221908A (en) * 1964-02-25 1965-12-07 Beloit Corp Material handling device
US3278058A (en) * 1964-05-21 1966-10-11 Yumbo Hoisting machine
US3273729A (en) * 1965-01-04 1966-09-20 Clamping device
US3275172A (en) * 1965-05-04 1966-09-27 Wrex All Implements Inc Wrecking and loading tool for use with a back hoe

Cited By (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3524560A (en) * 1968-01-10 1970-08-18 Thomas R Hall All-purpose boom construction
US3633771A (en) * 1970-08-05 1972-01-11 Moore Corp Lee C Apparatus for moving drill pipe into and out of an oil well derrick
US3834560A (en) * 1972-05-11 1974-09-10 A Miller Pole holding and setting device
US4033080A (en) * 1976-01-20 1977-07-05 Nippon Concrete Industries Co. Ltd. Concrete pole to be connected with a wood pole and method of replacing the lower part of the wood pole with the concrete pole
FR2368604A1 (en) * 1976-10-19 1978-05-19 Perrier Henri Hydraulic mining prop placing equipment - comprises mobile machine with extensible boom and hydraulic system for supplying pressure fluid to prop
US4645410A (en) * 1984-06-04 1987-02-24 Julien Royer Blade-equipped vehicle tree gripping means
EP0310610A4 (en) * 1986-04-07 1989-10-12 Labounty Roy E Auto body crushing device.
EP0310610A1 (en) * 1986-04-07 1989-04-12 LaBOUNTY, Roy Edward Auto body crushing device
US20060061113A1 (en) * 2004-09-21 2006-03-23 Hansen David K Lifting apparatus
US7204535B2 (en) * 2004-09-21 2007-04-17 David Keith Hansen Lifting apparatus
US20070134075A1 (en) * 2005-12-13 2007-06-14 Nathan Bunting Vehicle for setting utility poles in a remote location
US7448838B2 (en) * 2005-12-13 2008-11-11 Linecat, Inc. Vehicle for setting utility poles in a remote location
US7625165B2 (en) 2005-12-13 2009-12-01 Linecat, Inc. Vehicle for setting utility poles in a remote location
US20090104005A1 (en) * 2005-12-13 2009-04-23 Linecat, Inc. Vehicle for setting utility poles in a remote location
US20100308609A1 (en) * 2007-08-31 2010-12-09 Lavalley Industries, Llc Gripping assembly and gripping members for a grapple attachment
US9085944B2 (en) 2007-08-31 2015-07-21 Lavalley Industries, Llc Gripping assembly and gripping members for a grapple attachment
US8567836B2 (en) 2007-08-31 2013-10-29 Lavalley Industries, Llc Gripping assembly and gripping members for a grapple attachment
US7950709B1 (en) * 2008-03-27 2011-05-31 Orange Township Products L.P.A. Method and apparatus for gripping and installing pipe
US20100329823A1 (en) * 2009-06-29 2010-12-30 Tts Sense Canada, Ltd. Method and apparatus for delivery of a tubular to a drilling apparatus
WO2012054961A1 (en) * 2010-10-26 2012-05-03 John Eugene Hough Mobile lifting device with auxiliary lifting attachment
US9073732B2 (en) 2012-07-27 2015-07-07 Lavalley Industries, Llc Grab arm housing for grapple attachment
US20150047862A1 (en) * 2013-08-16 2015-02-19 Curtis Hull Multi-purpose grasping attachment accessory
US20150047861A1 (en) * 2013-08-16 2015-02-19 Curtis Hull Multi-purpose grasping attachment
US9470015B2 (en) * 2013-08-16 2016-10-18 Curtis Hull Multi-purpose grasping attachment
US9518405B2 (en) * 2013-08-16 2016-12-13 Curtis Hull Multi-purpose grasping attachment accessory

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