US2980268A - Transporting and dumping equipment - Google Patents

Description

April 18, 1961 e. R. DEMPsTER ET AL 2,980,268

TRANSPORTING AND DUMPING EQUIPMENT 5 Sheets-Sheet 1 Filed. Oct. 8, 1956 INVENTOKS BY g-mm;

ATTORNEYS April 18, 1961 ca. R. DEMPSTER EI'AL 2,980,268

TRANSPORTING AND DUMPING EQUIPMENT 5 Sheets-Sheet 2 Filed Oct. 8, 1956 April 18, 1961 G. R. DEMPSTER ETAL Filed Oct. 8, 1956 TRANSPORTING AND DUMPING EQUIPMENT 5 Sheets-Sheet 3 ATTORNEYS April 18, 1961 G. R. DEMPSTER EIAL 2,980,268

TRANSPORTING AND DUMPING EQUIPMENT Filed Oct. 8, 1956 5 Sheets-Sheet 4 uw" I Mv ATTORNEYS April 18, 1961 G. R. DEMPSTER ETAL 2,930,268

TRANSPORTING AND DUMPING EQUIPMENT 5 Sheets-Sheet 5 Filed Oct. 8, 1956 ATTORNEYS R. Dempster, No. 2,281,183

assaas s Patented Apr. 18, Iiiifii 2,980,268 TRANSPORTING AND DUWING EQUETVENT Filed Oct. 8, 1956, Ser. No. 614,683 9 Claims. (Cl. 214-75) This invention relates to improvements in transporting and dumping equipment, and more particularly to the type of equipment set forth in the prior patent of George granted April 28, 1942.

7 Equipment of the type set forth in u as manufactured and used heretofore, comprises a hoisting unit upon which a container is adapted to be supported during transportation to a desired point for dumping. The hoisting unit comprises a frame having a bucket rest or support mounted thereon upon which the container is adapted to be seated during transportation. A boom is mounted on the frame and has means for attachment to the container for lifting the container onto the bucket rest or support. A skid frame is also mounted on the frame of the hoisting device against which the container may rest and be drawn up in moving to its supported and dumping positions.

The bucket rest or support for the container is usually so located on the hoisting frame as to dispose the center of gravity of the container and its contents substantially "x1e of the vehicle or just slightly forward of the rear axle where the major part of the load can be takn by the latter during transportation of the vehicle. Containers of standard or conventional sizes can be accommodated on the bucket rests of hoisting units of However, for relatively lightweight material's extremely large or elongated containers are often desirable. If such containers, however, were used on conventional sized hoisting units, they would overhang danger of falling on the vehicle becoming overbalaiiced either during picking up or dumping. No adequate provision has been made heretofore for handling such abnormally large containers as is often desirable. v

One object of this invention is to overcome the objections noted especially for abnormally large or long containers that may be accommodated on the bucket rest and yet will not seriously overhang the back end of the vehicle during transportation.

Another object of the invention is to improve the construction of the bucket rest to accommodate containers of different sizes, both the conventional sized containers and those that are abnormally large, and yet to provide for efiective support thereof on the vehicle.

Still another object of the invention is to provide for the shifting of the bucket rest to respectively, so as to desired size in either The extended bucket rests hoisting unit or asattachthe aforesaid patent,

ments for the conventional bucket rests, slid-able there over and capable of shifting movement to retracted and extended positions. Suitable means may be used for eifecting the shifting of the bucket rests to their respective positions or these may be shifted by hand, according to the diiferent embodiments set forth in the drawings.

In the accompanying drawings:

Fig. 1 is a side elevation of a hoisting unit and container supported on the bucket rests in retracted position.

Fig. 2 is a similar view showing an enlarged container mounted on the extended bucket rests.

3 is a perspective view of the bucket rests in extended position and supporting the container.

Fig. 4 is a top plan view of one of the bucket rests with one form of operating means therefor;

Fig. 5 is a side elevation thereof;

Fig. 6 is a perspective view showing the bucket rests in retracted positions; 7

Fig. 7 is a cross-section through the mounting of a bucket rest, substantially on line 7-7 in Fig. 5;

Fig. 8 is a side elevation showing a modification of the operating means for the bucket rests; and

Fig. 9 is a side elevation, showing a further modification of the. bucket rest extension therefor. I

The invention is illustrated as applied to a hoisting unit substantially of thecharacter set forth in the aforesaid patent of George R. Dempster, No. 2,281,183, granted Apr'l 28, 1942. This hoisting unit is mounted on a truck chassis, the frame of whichis indicated generally by the numeral 1, supported on wheels 2. The cab is shown at 3.

Mounted on the chassis frame 1 is a subframe 4 extending lengthwise of the vehicle in this embodiment of the invention. A boom is indicated at 5 comprising a pair of spaced arms on opposite sides of the chassis, pivotally supported at 6 on the subframe 4. The boom 5 is adapted to be raised and lowered with respect to the sub'fra'me 4 by hydraulic power devices generally indicated at '1'.

At the rear end of the subfrarne 4 and mounted thereon are bucket rests rests 8 are located on opposite sides subframe 4 and are formed of structural members rigidly secured to the subframe. Each of the boom rests usually has an inclined upperedge surface shown at 9 upon which a container is adapted to be seated during transportation of the unit; I V

The container is shown, in Fig.1 at C, being a conventional form of drop 4 which does not-unduly overhang the rear end of the hoisting unit. Each container usually has lifting pins 1% and operating means the lifting pins 10 through flexible cable devices generally indicated at 11, and which usually comprise lifting chains. A movable carriage is shown at 12 operatively mounted supported thereon. Each of the extensions 15 is U} shaped 'in"cros's-'section,'enib"racihg' the upper edge of bottom container, of normal size,

solenoids.

/ power devicesu29 maybe the bucket rest 8 and being connected therewith by a transverse bolt 16 as shown in Figs. 4, and-7. The" The extensions 15 may be moved with respect to the essence for secure support of the containe some extension of the boom rest surfaces 9 is needed In that event," the extensions 15 are operated to be moved to the extended positions shown in Figs. 3 to 5 and thereby extend the surfaces 9 suihciently toform secure supports underneath the elongated container C. The length of these extensions 15 will depend upon the size of the container to be handled thereon but shouldbe sufficient so that the major part of the load will rest surfaces with no appreciable danger of tipping of the container off these surfaces during transportation. The container rests against the movable carriage 12 at the forward end of the boom rest surfaces 9 in" an inbucket rests 8 either manually or by power devices'such as hydraulic, vacuum orair cylinders, linkage or electric As shown in Figs. 3 to 6, a bell crank lever 18 is pivotally connected at 19 with each of the extension members 15, at one end of the bell crank lever 18,,while the opposite end of said bell crank lever is pivotally supported at 20 on the subframe 4. A rod 21 extends lengthwise of the subframe 4 and is pivotally connected at 22 to the bell crank lever 18 intermediate its ends. 7 Any suitable means may be used as desired for actuating the rods 21 to move the extension members to.

extended and retracted positions, respectively. Such actuating means may be operated manually or by power,

examples of which are shown in Figs. 4, S and 8, 7

As illustrated in Figs. 4 and S, lever arms 23 are connectedwithrespectivepush and pull'rods 21 by. being v are located forward of clined position as will be apparent from thefdrawings. Some overhang beyond the ends of the extensions 15 is not objectionable so long as the major part of the load is carried forward of the rear ends of these extensions.

The boom rest extensions 15 in their retracted positions therear apron be drawn bythe'hoisting unit container is adapted to Sand lifting chains 11.

and particularly by the boom When thus lifting the container up the hoistingunit, the carriage 12 is in itsrearmost posipivoted to the free ends thereof at 24. Each lever arm 23 is pivotally supportedat 25 on a mounting bracket 26 secured on the subframe member 4. Also fixed to the lever arms 23' at the pivots 25 are lever arm extensions 27 which are connected together by ahandle 28 extending transversely across the hoisting unit. .The extension lever arms 27 being fixed to the arms 23 will causemovement thereofand of the push and pull rods 21 upon manipulation of the handle 28, to the different positions illustrated'by full lines and dotted lines in Fig. 5, thereby to move the extension members 15 between the extended and retracted positions thereof as will be apparent from:

Fig. 5.

It is also possible, as noted above, to use suitable power means for operating the push and pull rods 21. by conthereto as illustrated in Fig. 8 and the numeral 29. Eachof the connected between the respecand thelmounting brackets 26 necting power devices designated generally by tive push and pull rods 21 substantially in the same relation indicatedin/Figs. 5

be used for this i and 8. Any suitable power devices may purpose, such as hydraulic, vacuum or air cylinders,

electric'solenoids or the like, and which are generically illustrated in Fig. 8.

The operation of the apparent from the foregoing with the illustrations in the drawings. 15 are shown in difierent positions according to'the size of container that is to be handled by the hoistingunit The operation of the hoisting means is described more in detail in the prior patent of George R. Dempster, No.

boom restextensions' will be description in connection These extensions 2,281,183, and need not be repeated herein since these hoisting units are well known in the art.

Where containers of the normal conventional sizes, such as indicated at C in Figs. 1 and 6, are tobe handled on the hoisting unit, the boom rest extensions 15 are to their retracted positions and the boom'rests with their moved inclined upper surfaces 9 will be sutfieiently extended to supportthe container transportation. This also locates the center of gravity securely' on the vehicle during ofthe load substantially over. the rear axle or slightly 7 forwardthereof.

' For an abnormally large container that would not be accommodated on the boom rest surfacesv 9 without materialoverhang, as indicated' atl Cf in igs. 2 3,

tion as indicatedin Fig. 6..

movement will not be extensions 15 which the boom rests, the extensions 15 can be projected to their extendedpositions shown in Figs.,3 and Sunderneath or ,by the 7 power means described above, and thereafter uponmnvementof the carriage 12 forwardtothe front ends of the boom rest surfaces, as

illustrated in Fig.7 5, the. container can be set down uponthe boom rest surfaces as in Fig. 3. Inthis position it can be carried to the point of dumping and thereafter it can be moved to the point of use for refilling In the modification illustrated in Fig.9, the bucket rest 1 and extension, and parts which correspond with those I described above, are identified by the same numerals applied thereto. In this form, the extensions 15, instead of being operated by bell cranks 158, or, other means at the front ends of the extensions, have the push bars connected with the rear end portions, thereof.

Each of the extensions [15 has apush barfio'pivotally skirt on" the extension, at the The rear endof the push bar 30 of a lever arm 33; The lever 33 is permanently fixed at its" lever arm 34, and f connected with the lateral point indicated at 31, is pivotally connected at32 to the depending end upper end portion to an upstanding these leverarrns 33-34 are pivotally mounted at 35 on a. bracket 36 on the subframe 4. p the lever arm 34 is a contact bar isfixed to the leverarm 34 by a locking clutch engagement therewith, indicated generally 1 At theupper end of 37, one end of which at 38. The opposite end of the contact/bar'37 has a laterally extending rounded nose portion, cated at 39, inposition to engage thecarriage hoisting means beneath'a 12. This shoulder may be formed by welding a clip to the forward face of thecarriage channel, or'by other suit- 12 of the able means as desired. 7

Normally, tions relative to the, positions by coiled springs 41 that are anchored in suitable'positions on the subframe 4j and connected with the 1 depending arms 35., These normalpositions areillustrated by dotted lines in Fig. 9,

therefrom that the 1 springs 41 also project the. contact bars 37 to the forward dotted line'positions; illustrated in the drawing. a

be carried on the boonr 50 upwhich the for transportation on Thus, the container can'jbe, drawn up along the skid surfaceon the carriage and interferred with by .thebooin restthen would 'be in their retracted positions, as shown therein. After the container is thus,

" raised'to a position above the container either by 'hand hereits contents can be discharged generally indistop shoulder 40,011 the carriage the 'extensions15'are their retracted posii bucket rests 8,.being. held in such and it will be apparent .When an extra widecontainer hasbeen picked up by the hq m s F 9 e d 9. ,thasa sse... 2.; i

moved inward with the carriage, as described above. When the channel on the forward face of the carriage reaches the dotted line position illustrated in Fig. 9, the forward face thereof engages the nose 39 on each contact bar 37. 'Ihis contact bar 37 is fixed in relation to the lever arm 34 so that it cannot swing with respect thereto, and the continued forward movement of the carriage l2 pushes on the contact bar 37, thereby swinging the lever arm 34 about the pivot 35, thus moving the lever arm 33 against the tension of the spring 41 to the full line position shown in Fig. 9. The lever 33 causes forward linear movement of'the push bar 30 to project the extension 15 to the full line position shown in Fig. 9, beneath the enlarged container C (Fig. 2),v The container then may be set down on the bucket rest 8 and extension 15, and will be supported effectively thereon during transportation.

As soon as the container is picked up by the hoisting means ofi the bucket rest 8 and extension 15, and the carriage 12 moved rearward of the subframe 4 beyond the point indicated in dotted lines in Fig. 9, the springs 41 acting on the lever arms 33 will swing the latter to the dotted line positions shown, thereby pullingthe bars 30 and extensions v15 to their retracted dotted line positions.

When the extensions 15 are not needed, they can be put out of operation merely by swinging the contact bars 37 to the intermediate dotted line positions shown in Fig. 9. This may be done by loosening the clutch connections 38 and swinging these contact bars back. The lever arms 34 and contact bars 37 are displaced laterally of the channels of the carriage 12 so as not to engage the latter when the nose portions 39 are moved to such retracted positions. These nose portions normally overlap the rear faces of the channels, forming lateral projections on the contact bars.

We have provided a very simple and effective extension of the boom rests on hoisting units which allows us to carry extra long containers, the center of gravity of which would not allow them to be carried on conventional bucket rests. The extensions are simple and inexpensive and may be added to conventional equipment without appreciable modification and at little cost.

While the invention has been illustrated and described in certain embodiments, it is recognized that other variations and changes can be made therein without departing from the invention, as set forth in the claims.

We claim:

1. In transporting equipment adapted to be mounted on a vehicle chassis and including a pair of bucket rests having supporting surfaces adapted to be mounted on the rear end of the chassis to receive a container thereon, and means for lifting a container to a seated position on the supporting surfaces of the bucket rests, the combination therewith, of extension members slidably mounted on the rear ends of the bucket rests to support an oversized container, each of the extension members being substantially U-shaped in cross-section and embracing the supporting surface of a bucket rest, and means connected to said chassis and extension members for mounting said extension members to extended and retracted positions substantially in alignment with the supporting surfaces of the respective bucket rests to cooperate therewith in supporting the container.

2. In transporting equipment adapted to be mounted on a vehicle chassis at the rear end thereof and including a pair of bucket rests having supporting surfaces adapted to receive a container thereon, and means for lifting a container to a seated position on the supporting surfaces of the bucket rests, the combination therewith, of extension members, each of the extension members being substantially U-shaped in cross-section and embracing the supporting surfaces of the bucket rests, and means mounting the extension members on the bucket rests for sliding movement to extended and retracted positions with re- 6 spect thereto substantially in alignment with the supporting surfaces of the respective bucketrests to cooperate therewith in supporting the container, bell crank levers connected with the extensions, and push and pull rods con'-. nected with the bell crank levers for moving said extensions with respect to the bucket rests.-

3. In transporting equipment, the combination with a vehicle chassis having a depending apron at the rear end thereof, of a hoisting unit mounted on the vehicle chassis comprising a pair of bucket rests extending forwardly of the apron with supporting surfaces inclined toward the rear of the vehicle chassis, a container mounted on the bucket rests and extending rearwardly of the apron therefrom, hoisting means for raising and lowering the container with respect to the bucket rests and for moving the container to a seated position on the supporting surfaces thereon, and extension members slidably mounted "on the rear ends of the bucket rests to support an oversized con tainer and arranged substantially in alignment with the supporting surfaces of the bucket rests and extending rearwardly of the apron underlying and supporting the container, and means connected to said chassis and extension members for moving said extension members to extended and retracted positions with respect to said bucket rest.

4. In transporting equipment adapted to be mounted on a vehicle chassis and including a pair of inclined bucket rests having supporting surfaces adapted to be mounted on the rear end of the chassis to receive a container thereon, and means for lifting a container to a seated position on the bucket rests, the combination therewith, of extension members slidably mounted on the rear ends of the bucket rests to support an oversized container and arranged substantially in alignment with the supporting surfaces of the bucket rests, and means connected to said chassis and extension members for moving said extension members to extended and retracted positions with respect to said bucket rests in alignment with the supporting surfaces to support the container thereon.

5. In transporting equipment the combination with a vehicle chassis having a depending apron at the rear end thereof, a pair of bucket rests mounted on the vehicle chassis forwardly of said depending apron and having supporting surfaces thereon, an oversized container seated upon the supporting surfaces, means mounted on the vehicle chassis for raising and lowering the container with respect thereto, U-shaped extension members slidably mounted on the supporting surfaces of the bucket rests and extending rearwardly beyond and upright plane through the depending apron in underlying supporting relation with the container, and means connected to said chassis and extension members for moving the extension members to extended and retracted positions with respect to the bucket rests.

6. In transporting equipment adapted to be mounted on a vehicle chassis at the rear end thereof and including a bucket rest adapted to receive a container thereon, and means for lifting a container to a seated position on the bucket rest, the combination therewith, of an elongated extension member, means mounting one end of the extension member on the bucket rest for lengthwise sliding movement relative thereto, and means for rocking the opposite end portion of said extension member vertically during the sliding adjustment thereof.

7. In transporting equipment adapted .to be mounted on a vehicle chassis and including a bucket rest adapted to be mounted on the rear end of the chassis to receive a container thereon, and means for lifting a container to a seated position on the bucket rest, the combination therewith of an extension member slidably mounted on the rear end of the bucket rest to support an oversized container, and means connected to said chassis and extension member for moving said extension member to extended and restricted positions with respect to said bucket rest.

-8. In transporting equipment adapted tohe mounted on a vehicle chassis and including a bucket rest adapted to bemouinted on the rear end of the chassis to receive a' container thereon, ,means for lifting a container to a seated-position on the bucket rest, the combination therewith, of an extension member slidably mounted on the rear end of the bucket restto supportan oversized container, said extension member ,being movable to extended 'and retracted positions with respectito said bucket rest, and means movable by the forward-movement of the container'when lifted above the bucket rest by said lift 7 ing means to automatically move the extension member; to'the extended position 9. 1n transporting equipment on a vehicle chassis and including abucketrest adapted to extended and retracted bucket rest. 11

adaptedtobe mounted l to be mounted on the'rearend of the chassis to receive a container thereon,and means for iiftinga container toa seatedposition on .the bucket rest, the combination therewith, of an extension; member. slidably; mounted on the 7 rear end of the bucketrest to supportian oversized con tainer, andlever means connected to said chassis and extension member for moving said extension membe'f positions :with respect to said ence Cited in the fiie'of atent Brooks,- May 7, 1940 D 3,194

Apr. ,28, 1942 Apr. 26, 1949 Germany Mar; 29, 1954

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