US2404619A

US2404619A - Loading machine

Info

Publication number: US2404619A
Application number: US585881A
Authority: US
Inventors: Gilbert E Coats
Original assignee: Individual
Current assignee: Individual
Priority date: 1945-03-31
Filing date: 1945-03-31
Publication date: 1946-07-23
Anticipated expiration: 1963-07-23

Description

July 23, 1946;

G. E. coATs LOADING MACHINE Filed March 31, 1945 4 Sheets-Sheet 1 July 23, 1946. G. E, COATS LOADING MACHINE Filed March 31, 1945 4 Sheets-Sheet 2 Jhz/en for G/fiberff. Coais w/fffaaw July 23, 1946. G. E. coATs LOADING MACHINE Filed March 31, 1945 4 Shets-Sheet 3 "Euenm Gi/berf ECoafs yw w Jul y 23, 1946. G. E. CO ATS LOADING MACHINE Filed March 31, 1945 4 Sheets-Sheet 4 Inf/ Qi/beri [Loads WXM any;

Patented July 23, 1946 UNITED STATES PATENT OFFICE 2,404,619 LOADING MACHINE Gilbert E. Coats, Fort Dodge, Iowa Application March 31, 1945, serial no. 85,8l

'7 Claims.

This invention relates generally toloading machines and in particular to a lpading attachment for a tractor for picking up and stacking or loading hay, manure, snow and like material. This application is an improvement of co-pending application Serial No. 537,945 filed en May 29, 1944.

An object of this invention is to provide a loading machine in which a load-carrying unit is supported on telescoping pivoted lifting arms which are extended, as they are elevated, by the action of arm lifting cables. 7 I

A further object of this invention is to provide a tractor mounted loading attachment which can be quickly and easily mounted on and removed from different types of farm tractors and operated by the usual side belt pulley on a, tractor.

Another object of this invention is to provide an improved latch and trip mechanism for the load-carrying unit in a loading machine.

Yet a, further object of this invention is to provide a snow scoop, fora tractor mounted loading attachment, which is readily interchangeable with other load-carrying units for the attachment. I

Another object of this invention is to provide a tractor mounted loading attachment having an upright frame and a pair of pivoted lifting arms arranged at opposite sides of the frame, in which a load-carrying unit I on the front end. of the arms is maintained substantially adjacent the forward side of the upright frame at all elevated positions of the arms. v I s I A feature of this invention is found in the provision of a tractor mounted loading attachment having a pair of extendible liftin arms arranged at opposite sides of the tractor, and an upright frame at the forward end of the tractor for supporting lifting cables, in which the lifting cables are inclined rearwardly and downwardly from the upright frame at all pivotally moved positions of the arms. I I I A further feature of this invention is found in the provision of a tractormounted loading attachment having a pair of oppositely arranged pivoted load lifting arms, in which an upright means for guiding the arms in theirup and down movement is provided with a pivoted extension at its lower end movablein at forward and rear ward direction t accommodate changes in elevation in a ground surface over which the tractor is travelling.

Further objects, features and advantages of this invention will become apparent from the filllowin'g description when taken in connection with the accompanying drawings in whichf Fig. i is a site erevanonh view (if the loadin attachment of thisinventionin assembly relation with a farm tractor of a usualtype; 4

Fig. 2 is a plan view of the loading attachment and tractor assembly; I H I II Fig. 3 is a sectional view taken on the line 3-'j3inFig.2; I I I Fig. 4 is a front elevational viewof the loading attachment and tractor assembly with certain parts broken away to more clearly show the construction of the attachment; I

Fi 5 is a sectional View taken on the line 5'-'5 in Fig. 4 showing the clutch mechanism for controlling the arm lifting cables; v Fig. 6 is a fragmentary rear elevational view of the top portion of the upright frame of the at- I tachment showing the pulley supports for the arm-lifting cables; II I I I Fig. '7 is a sectional view as seen along the line l-'| in Fig. 6;

Fig. 8 is a sectional view taken on the line s 's in Fig. 6; I I I I Fi 9 is an enlarged elevatienal detail view of a tightening device for the drive belt connected with the tractor belt pulley; I

Fig. 10 is a sectional View as seen on the line |0 IllinFig.9; I

Fig. 11 is a fragmentary rear detail view, partly in section, of a lower end extension on one of the guides for guiding the up and down movement of thepivoted lifting arms; I

Fig. 12 is a sectional view as seen on the line I2-I2 in Fig. 11 showing the parts thereof in changed positions; and I Fig 13' is a sectional view taken on the line 13-13 in Fig. 2 showing the assembly of the lifting arms with a, load-carrying scoop;

With reference to'the drawings the loading attachment of this invention is illustrated in Fige. 1 and 2 mountedon a farm tractor of a usual type having a body frame or chassis 15, rear wheels l6 and front steering wheels ll. A usual side belt pulley is indicated t a in I operative association with the tractor transmission mechanism (not shown) I I The loading attachment of this invention includes a pair of pivoted teles'coped lifting arms [9 and 29 arranged at opposite sides of, the tractor frame l5 and pivotally Sup orted at their rear ends 22 on brackets 23 carried on the tractor rear axle 24. Each lifting arm 19 and 2l l'is comprised of a pair of pipe or

arm members

25 and 26 arranged in a telescopic relation, with the arm member 26 telescoped over the forward portion or the arm member 25 which has its rear end and a lower member 3?.

22 pivoted onra bracket 23'. The arm member 25 is thus axially or longitudinally movable relative to the arm member 2%, with the rearward longitudinal movement of the arm 26 being limited by

bers

25 and 26 with such contracted position be- 1 ing dependent on the length of the tractor upon which the loading attachment is to be mounted. The front ends of the arm members 26 are pro Jected forwardly of the tractor and connected to- 1 gether at such" front ends by a frame structure comprised of a pair of

channel beams

29 and 3| (Figs. 3 and. 4) which are secured to opposite sides of the arm members 26, .with the top beam 29 located rearwardly of the front side of the 7': bottom beam member 3!. A load-carrying scoop, indicated generally as 32, is pivotally supported at 33 on the front ends of the lifting arms I9 and 7 2B in a manner which will be later described.

In order to releasably hold the scoop 32 in a loading position there is provided a latching mechanism including an upright pivoted latch 34 (Figs; 3 and 4) comprised of an upper member 36 through the lower member 31 is receivable in a slot 39 formed in the upper member 36 to provide for the adjustment of the length of the latch 34.

The latch adjacent its upper endis formed A bolt 38 extended otally moved forwardly by the action of the trigger member 58 so as to be in a position to releasably engage the catch member 44 on the return movement of the scoop 32 to a loading, position. Adjustmentof the bottom of the scoop 32 relative to the ground is accomplished by adjusting the length of the latch 34 through the bolt 31 connecting the latch upper member 36 and lower member 31. Thus when it is desired to elevate the front end of the scoop 32 the latch 34 is shortened, while to lower the scoop front end the latch .34 is lengthened.

The lifting arms i9 and 20 are pivotall raised and lowered by means including a pair of lifting cables Si] and 5! (Figs. 1 and 4) The cables are supported from adjacent the top of an upright downwardly from the upright frame members 62 withan opening 43 of a size to receive, in releasable engagement, a catch member Ml projected rearwardly and slightly upwardly from the 3 back side 46 of the scoop 32.

A rearward extension 41 adjacent the top of the l latch 3H is formed at its free end with an opening '43 for slidably receiving the free end'of a trigger or release member 49 which is projected radially from the inner end of a rock shaft 5i rotatably supported in bearings 52 carried on the upper side of the top beam member 29. The outer end i of the shaft 52 carries a rock lever 53 (Figs. 1

and 2) which is pivotally connected at its upper end with one end of a rod 54, the opposite end of 3 which is pivoted to a handlever 56 pivoted at its lower end 51 on'the top of the arm member 25 for the lifting arm 19. The lever 53, and in turn 1 the shaft 52, are continuously biased in a clockwise direction as viewed in Figs. 1 and 3, by a tension spring 58 connected at one end to the lower end of the rock lever 53 and at its opposite end to a lug 59 carried on the arm member 26, of the lifting arm 19, at a position rearwardly of the Shaft 52.

This biasing action of the" spring 58 acts to continuously urge the trigger member 49 forwardly, or in a clockwise direction, as viewed in Fig. 3, with the member 49 in turn acting on the latch 34 to move and yieldably maintain the 1 latch opening 43 in a position for engaging the patch 44 on the scoop 32.

".In the operation of the latching mechanism to release or dump the scoop 32 the hand lever 58 and $3 for connection with the tractor frame l5. Each cable 60 and 6! is operatively associated with a pair of spaced

pulleys

65 and 66 rotatably supported at the top of the upright frame for rotation in a plane transversely of the tractor frame 15. The pulleys 66 have their adjacent ends located inwardly of

corresponding frame members

62 and 63 while the outer end of each pulley 65 is adjacent a corresponding end of the transverse frame member 64 for a purpose which will appear later.

As best appears in Figs. 6, 7 and 8 the

frame members

62, 63 and 64 are of an angle iron construction, with the transverse frame member 64 having the angle thereof at the top and front side of the upright frame. A supporting plate 6'! is welded to the bottom of the top horizontal leg of the frame member 64 over the end portion thereof defined by a pair of associated

pulleys

65 and 66, with such pulleys being rotatable on pins 68 extended between the front leg 69 of the frame member 64 and a plate 6?. Extended transversely across each end of the frame member 64 is a supporting plate 10.

The movable or telescoping member 25 of each lifting arm l9 and 20 has a bracket H of a substantially inverted U shape welded on its upper side at a position substantially intermediate the ends of an arm member 26. As clearly appears in Fig. 1 when an arm member 26 is in a telescoped or contracted position the bracket H is located rearwardly of the upright frame which is supported at the front end of the tractor frame [5. 1A pulley 12 is rotatably supported within each bracket H on a pin member 13. In one embodiment of the invention the arm member 26 is about eight feet long and the pulley pin 73 is located about three feet rearwardly from the free end of the arm member 26.

Since the assembly of each cable SO and 6| With its

associated pulleys

65 and 66 is the same only the assembly of the cable 60 will be referred to in detail in the following description. The cable 60 has one end (4 (Fig. 1) connected to the front end of the supporting plate 10, and is then extended downwardly for passage about the pulley 72 carried'in the bracket 7!, from which pulley the cable is passed upwardly over the pulley 65 and through an opening 16 in the a leg I! of the upright frame member 92 over the pulley 96 '(Fig. 6). From the pulley 69 the cable 69 extends downwardly forconnection of its other end about awinding drum I8 (Fig. 4). The cable 6| has a corresponding winding pulley 89.

The Winding pulleys l9 and 99 are mounted on a common transverse shaft (9 rotatably supported in bearings '8I carried on the forward side of the

upright frame members

92 and 93. The bearings 8I are secured to a

corresponding frame member

62 and 93 by bolts 82 extended therethrough and through slots '93 in the frame members whereby the shaft I9 is adjustable in an up and down direction on the upright frame for a purpose which will appear later.

Mounted on the shaft 19 between the winding drums I8 and 89 is a sprocket 84 connected by a sprocket chain 86 to a sprocket 9! carried on a sleeve member 88 which is rotatable on a driving shaft 89 located below the shaft I9 and rotatably supported in bearings 99 and 92 secured to the

frame members

92 and 69, respectively, in the upright frame. Integrally formed with the sleeve member 89 is a shell member 93 which constitutes one of the units in a friction clutch mechanism indicated generally at 99. A second clutch unit 99 is of a conical shape, adapted to be received in frictional engagement within the shell member 93, and mounted on the driving shaft 89. By moving the shell member 99 axially of the shaft 99 into and out of frictional engagement with the second clutch unit or conical member 99, power is transmitted from the shaft 89 to the shaft I9 through the sprocket and

chain assembly

84, 89 and 81 (Figs. 4 and 5).

This movement of the shell member 93 relative to the cone member 99 is accomplished by means including a clutch lever 9! integrally formed with a hub portion 99 which is rotatable on the driving shaft 89 at a position adjacent to the sleeve member 88. The lever 91 extends upwardly to a position adjacent the transverse frame member 94 of the upright frame and is of a form to be received within the winding drum I8 for movement radially of such winding drum without interfering with the wrapping and unwrapping of the cable 99 relative to the winding drum, as is clearly illustrated in Fig. 5. The hub 98 is formed with a cam surface 99 for operative association with a corresponding cam surface I9I formed on the inner side of the bearing member 99. Referring to Fig. 4 the bearing member 99,-hub 98, and sleeve member 98 are seen to be in a stacked relation on the driving shaft 89.

Thus on pivotal movement of the clutch lever 91 in a direction rearwardly of the tractor, or toward the left, as viewed in Fig. 5, the sliding engagement of the cam surfaces 99 and I9I moves the hub 99 and sleeve 88 toward the right, as viewed in Fig. 4, to in turn move the shell member 93 axially on the shaft 89 into frictional engagement with the cone member 99. Since the cone member 99 rotates with the driving shaft 89 this frictional engagement of the

members

93 and 96 connects the shaft I9 with the shaft 89 through the sprocket and

chain assembly

94, 89 and '87. The shaft 89 has one end projected laterally from the upright frame member 92 which projected end carries a pulley I92 connected through a belt I93 with the tractor belt pulley I8 (Fig. 1).

The connection and disconnection of the shafts 1'9 and 89 to pivotally move the lifting arms I9 and 29, and to retain the scoop 32 at any elevated I or moved position of the lifting arms, is controlled entirely by the manipulation of the clutch lever 91 in a manner now to, be described. With reference to Fig. l the lever 91 is shown with its upper or free end pivoted to an actuating rod I94 which extends toward the rear of the tractor to a position conveniently accessible to the tractor operator. The rod I94 is slidably supported in an upright frame member I99 mounted on the tractor frame I5, and its rear end is formed with a hand grip I91.

Pivoted at one end adjacent the lower end of the lever 91 (Fig. 5) is a link I98'the opposite end of which is pivotally connected at I99 with the arm III of a bell crank H9 of an irregular shape. A shaft portion I I2 connected between the crank arm I III and a crank arm H5 is rotatably supported in a bearing H3 mounted on a bottom transverse frame member H4 extended between the

upright frame members

62 and 63. The crank arm I I5 is extended laterally and forwardly from'the shaft portion H2 and then parallel and away from the shaft portion IIZ. A brake band I'Ii is positioned about the upper half of the clutch shell member 93 and has one end IE8 pivoted to the crank arm I I5 and an opposite end H9 pivoted on a bolt I2I secured to the bottom transverse frame member H4.

The brake band II! is normally held in frictional engagement with the clutch shell member 99 by a spring I22 connected at one end to a bracket I23 on the upright frame member 92 and at its opposite end to the free end I24 of the bell crank arm III. On actuation of the clutch lever 91 in a direction toward the rear of the tractor, or in a counter-clockwise direction as viewed in Fig. 5, the shaft portion H2 is rotated in a counter-clockwise direction, as also viewed in Fig. 5, by the action of the link I98 on the bell crank II9 whereby the end IIB of thebrake band II! is moved upwardly. This movement of the brake band HI releases its frictional engagement with the clutch shell member 93. leased, the scoop 92 is free to move downwardly from any "elevated position due to theaction of gravity. On a continued movement of the clutch lever 9I in a counter-clockwise direction the cam surfaces 99 and I9I are relatively moved a distance sufficient to frictionally engage the shell member 93 with the cone member 96, in the manner above fully described, to provide for the driving of the shaft I9 from the shaft 89.

When the clutch lever 9! is released the brake band II! is automatically moved into a braking position with the shell member 99 by the action of the spring I22. It is thus seen that the elevating of the scoop 32, its retention in an elevated position, and its release for falling downwardly to the ground by the action of gravity is controlled entirelyby theactuation of the clutch lever 91.

In the operation of the loading machine of this invention assume the lifting arms I9 and 29 to be in their lowered and contracted positions shown in Fig. 1, that is with the arm members 29 moved to their rearward positions against the stop pins 21. With the lifting arms I9 and 29 thus positioned the pulleys I2 for connecting the cables 69 and BIwith the lifting arms are located rearwardly of the upright frame. On manipulation of the clutch lever S'Lin the manner above described, to release the brake band Ill and connect the shaft I9 in a driven relation with the- When the shell member 93 is thus reshaft 89, the cables to and st are wound'about their corresponding drums I8 and 80 to elevate the lifting arms I9 and '29. During the elevation of the liftingarms I9 and 20 the cables 69 and GI tend to assume a position vertically down- This action of the cables In other words, due to the the arm members26 are extended from their con- 1 tracted or telescoped positions, shown infull lines in Fig. 1, to their dotted line positions, also shown in Fig. 1, concurrently with the elevating of the lifting arms I9 and 29, whereby'the scoop 32 is retained in a position adjacent the forward side of the upright frame at all pivotally moved positions of the arms I9 and 20.

The scoop 32 maybe dumped at any elevated position by the actuation of the hand lever 56 to 1move the latch 34 out of engagement with the I catch 44 as was above fullydescribed. The dumping movement of the scoop. 32 is limited by the I,

provision of a pair of lug members I65, welded or otherwise secured to the bottom of the scoop at a position forwardly of the scoop pivots 33, and

adapted to engage the under side of the arms I9 and 29 to stop a dumping movement of the scoop. .A tension spring I10 (Figs. 1 and 4) connected at ione end to the top transverse frame memberv 64,

and at its other end to a chain Ill is passed under a pulley I12 on the beam member 29 for connection at I13 with the scoop back wall 46; When the scoop 32 is dumped, its pivotal movement in a clockwise direction, to a position at which the lugs I65 engage the liftingarms, stores or builds lup a pressure in the spring I19. When-the load .is dumped from the scoop the pressure thus stored in the spring acts to return the scoop to its loading position at which the latch 34 is releasably engaged with the catch 44. The spring and chain assembly I19I (I thus functions to automatically return the scoop to a loading position. 7

Since the cables 60 and GI are normally exitended rearwardly from their corresponding pulleys 35 to one side of the plane of rotation of the pulleys 65 means are provided to guide the cables 69 and SI for their movable support at all 8 pins 21 to in turn carry the pulleys l2 rearwardly of the upright frame. When the scoop 32, theree fore, is to be lifted again the cables 60 and 6| are inclined rearwardly from the upright frame and positioned to extend the arm members 26 concurrently with an elevation of the scoop 32.

}and is of an arcuate shape bent inwardly under.

On lowering of the scoop 32 by gravity, the

cables 63 and GI are unwound from the drums :28. The lifting arms I9 and 29, when the scoop 32 is dropped to its lowermost position, may have the members 26 thereof in a partially extended position. However, on loading of the scoop 32, by a usual bucking operation, the arm members 26 are moved to their stop positions against the To stabilizethe lifting arms I9 and 20 against movement laterally or transversely of the tractor at substantially all elevated positions of the arms, there is provided an arm guide means (Fig. 4) which iscomprised of a pair of guide members I39 and I3I oppositely arranged in a spaced relation to the outside of the

uprightframe members

62 and 63, respectively. Each guide member I39 and I3I is of a pipe construction and is suitably secured at its upper'end, as by welding or is welded between the lower end of an arm I30 and I3I and the lower end of a corresponding

upright frame member

62 and 63. The spaced relation of the guide members I39 and I3I from the corresponding frame members 62 and 63' is such as to provide for their contact engagement with the inner sides of the lifting arms l9 and 20, and for a sufficient clearance relation of the pulley I92 between the guide member and the frame member 62. It is seen, therefore, that the guide members I39 and I3I thus stabilize the lifting arms I9 and 29 against lateral movement at all lifted positions of the arms I9 and 20 over the distance defined by the length of the guide members I39 and I 3|.

Since the guide members I33 and I3I, as shown in Fig. 1, terminate at a position above thefront axle for the steering wheels I? each guide member I39 and I3I has a pivoted lower unit to provide for a guiding of the lifting arms I9 and 23 at all pivotally moved positions thereof. Each lower unit includes a sleeve member I33 rotatably supported on a vbrace member I32 andextended between a guide member I30 and I3I and a corresponding frame member 62 and-63 (Figs. 4 and 11). Welded to the bottom side of the sleeve member I33 i a supporting plate I34 ex tended in a spaced relation below the lower'end of a guide member I 39 and I 3i. An extension I36 for a guide member I33 and I3I is welded to the bottom side of a supporting plate I34 in ver tical alignment with an associated guide member. A'brace member I3? is welded between the lower end of the extension I36 and the outer end I38 of the supporting plate I34. It is seen, there fore, that the extension I36 is pivotally movable about the pipe member I32, as an axis, in a direction forwardly and rearwardly of the tractor while being retained at all times in the vertical plane of an associated guide member I39 and I3I. The pivoted lower unit is normally yieldably retained in an upright position by the provision of a tension spring I39 connected at one endad jacent the inner end of a sleeve I33, and at its opposite end to a bracket IdI projected outwardly from a guide member I30 and I 3| at a position spaced upwardly from the brace member I32.

The extension I36 in conjunction'with an associated guide member I39 and I3I provides for the stabilizing of the arms I9 and 29 against lateral movement for all pivotally moved positions of the lifting arms from substantially a ground level to the top of the upright frame; By virtue of the pivoted assembly of an extension I36 with a guide member I39 and I 3| such extension is freely movable when it strikes an obstruction or the like in the path of advance of, the tractor, as

indicated in Fig. 12 for a pivotally moved position of the extension I36. The projection of the lifting arm guide means to a position substantially adjacent the ground surface thus in no way interferes with the travel of the tractor over rough or uneven ground while providing a guiding action for the lifting arms I!) and 2f over their full pivotal travel.

As shown in Figs. 4 and 6 the cable 55 and GI extend substantially vertically downwardly from their corresponding pulleys 65 for wrapping about the winding drums l8 and 8B. In other words,

even though a drum I8 and 8B and an associated pulley 85 are rotatable in plane normal to each other a cable 60 and SI passes from one the other in a straight line path so as to be always centered relative to a pulley 66 and a drum I8 and 85. In order to provide for thi assembly of the cables 63 and BI with the pulleys 6t and drums 18 and 80 it is necessary that the drums I8 and 8!) be rotated in a counter-clockwise direction, as viewed in Fig. 1, to wind the cables thereon. Likewise the pulley I02 would be rotated in a counter-clockwise direction as also viewed in Fig. 1. Since the standard rotation of the belt pulley $8 in commercial type tractors is generally in a clockwise direction, as viewed in Fig. 1, the belt I03 for connecting the pulleys I8 and I 62 is twisted to provide for a reverse rotation of the pulleys I8 and I02.

A belt tightener for the belt I63 (Figs. 9 and 10) includes an idler roller, I52 rotatably supported between arm-s M3 supported in a spaced relation on a sleeve member I4 3. The sleeve member I44 is rotatable about a shaft Hi having one threaded end I41 extended through a slot I48 formed in the upright frame member and an opposite threaded end I59 extended through a slot I5! formed in a lug member IE2 secured to and extended rearwardly from the guide member I35. Welded at one end to the sleeve member I44 and extended forwardly from the sleeve member is an arm member I52a having a tension spring I53 connected to its free end ififi. The opposite end of the spring I54 is connected to the free end of an arm member I55 which is secured to, and extended rearwardly from, the frame member fi'l. By virtue of the pivotal support of the sleeve member I54 on the shaft I46 the spring I54 acts to urge and yieldably maintain the roller I42 against the bottom side of the belt I83 as is clearlyillustrated in Fig. 9. The extension of the shaft ends I41 and M9 through the slots I48 and ISI, respectively, provides for a tilting adjustment of the idler M2 relative to the belt I53 to hold the belt againstaxial travel on the pulley I02 and in a substantially centered position on the pulley I02. An adjusted position of the shaft I66 is maintained by the tightening of nuts I56 threadable on the shaft ends I41 and I49 and against the frame member 62 and bracket I52, respectively.

The load-carrying unit 32 is illustrated in the drawings as being a snow scoop, although it is to be understood that a hay buck, manure scoop or the like may be substituted for the snow scoop 32. With reference to Figs. 2, 4 and 13 the snow scoop 32 is seen to be of a length substantially equal to the transverse width of the tractor, and to extend to the outside of the lifting arms I9 and 20. The back wall it of the scoop 32 is formed with a pair of longitudinally spaced forwardly and downwardly inclined housing members I58 constituting hollow brace members connected between the back and bottom of the scoop.

of available commercial tractors.

The members I58 are of a size to receive the forward ends of the lifting arms !9 and Ziltherein.

The scoop 32 i pivotally supported on theforward ends of the lifting arms I?! and 20 by means of the bolts 33 whichare extended therethrough and through the side walls of the housing members I58. Nuts ISI for the bolts 33 are positioned to the outside of the housing members and readily accessible from the inside of the scoop. The stop lugs I65, for limiting the dumping movement of ;the scoop 32, are secured to the bottom of the scoop and extended across the open bottom sides of the housings I58 forwardly of the arms I9 and 2B. Skids I52 extended transversely of the scoop to each side of a housing member I58 slidably support the scoop for travel along the ground surface during a bucking operation. It is seen, therefore, that the scoop is of a rela tively large size for plowing and lifting snow and of a construction for ready assembly with and removal from the load-lifting arms I9 and 2%.

From a consideration of the above description it is seen that the invention provides a loading attachment which is of a simple and rigid construction and readily attachable to different types The assembly of the cables 60 and 6| relative to the telescoping lifting arms I9 and 20 provides for the function of the cables not onl to lower and to raise the lifting arms, but to extend the arm members 26 concurrently with the elevation of the lifting arms so that the scoop 32 is maintained adjacent the forward side of theupright fram at all pivotally moved positions of the lifting arms. Further all of the control levers for dumping the scoop and operating the lifting arms are readily accessible to the operator so as to be conveniently manipulated and available atlall times. 7

Although the invention has been described with respect to a preferred embodiment thereof it is to be understood that it is not to be so limited since changes and modifications can be made therein which are within the full intended scope of this invention as defined by the appended claims.

Iclaim: I i i 1. A loading machine including a portable frame and an upright frame carried at one end of said frame, a pair of pivoted telescoped lifting arms arranged at .opposite sides of said frame, means pivotally supporting said arms at their rear ends on said portable frame, with each of said arms including a telescoping member movable forwardly of said upright frame, a load carrying unit, supported on the front end of said telescoping members, flexible lifting, means for said arms, means supporting said flexible lifting means at one of their ends adjacent the top of said upright frame, means connecting the opposite ends of said flexible lifting means at positions on said telescoping members such that when said arms are telescoped and in a lowered position, said flexible lifting means are inclined rearwardly and downwardly from the top of said upright frame, and means for concurrently raising and lowering said flexible, lifting means to pivotally move said arms, said liftin means, on raising thereof, being movable to positions substantially within the plane of said upright frame whereby said telescoping members are extended forwardly of said upright frame;

2. A loading machine com rising a portable frame and an upright frame supported at one end I of said frame, a pair of pivoted telescoped liftin arms arranged at opposite sides of said frame,

11 means pivotally supporting said lifting arms at their rear ends on said frame, with a telescoping member'of each arm being extendible forwardly of said upright frame, a pair of flexible lifting means corresponding to said arms, with each of said lifting means being movably supported adjacent the top of said frame and connected with a corresponding telescoping member at a position rearwardly of said upright frame when an arm is lowered and in a contracted position, and means for concurrently raising and lowering said lifting means including a winding drum for each of said lifting means rotatably supported on said upright frame, with said lifting means, on raising of said arms, being movable toward a position substantially Within the plane of said upright frame to extend said telescoping members forwardly of said frame.

eluding a pair of flexible lifting means movably supported adjacent the top of said upright frame,

and connected with said front member at positions rearwardly of said upright frame to provide for the extension of said front members concurrently with the elevation of said arms.

4. A loading machine including a portable frame and an upright frame at the forward end of said portable frame, a pair of pivoted lifting arms arranged at opposite sides of said portable frame, with each of said arms including a rear member and, a front member movably supported on a rear memberfor relative longitudinal movement ,to extended and contracted positions, a load-carrying unit supported on the forward ends of said front members, means pivotally supporting said flexible lifting means adjacent the top of means for concurrently elevating and lowering said lifting means, with a flexible lifting means,

} ing each rear member on said portable frame, a pair of flexible lifting means for said arms, with I flexible lifting means being connected with a corresponding front'member at a position rearwardly of said upright frame when said front member is in a contracted position, means movably support- 12 on being elevated, acting to move a corresponding front member toward its extended position.

5. A loading machine comprising a portable frame and an upright frame at the forward end of said portable frame, a pair of pivoted lifting arms arranged at opposite sides of said frame, having their front ends projected forwardly of said upright frame, means pivotally supporting at opposite sides of said frame, means for elevating and lowering said lifting means, means for guiding said arms against movement laterally of said frame comprising a pair of upright guide members positioned at opposite sides of said frame for contact engagement with the inner sides of said arms, pivoted lower extensions for said guide members pivotally movable longitudinally of said frame, and means for normally yieldably retaining said extensions in upright positions. I

'7. A loading machine comprising a portable frame and a pair of pivoted arms arranged at opposite sides of said frame, a load carrying unit pivotally supported-on the forward ends of said arms, a catch member extended rearwardly from said unit, a transverse frame structure connected between said arms rearwardly of said unit, a pivoted upright latch pivotally supported on said frame structure for pivotal movement longitudinally of said frame, said latch having an opening adjacent the upper end thereof adapted to receiv the free end of said catch member in releasable engagement, a transverse rock shaft on said frame structure having an upright radial member, a rear extension on 'said latch slidably engageable with said radial member to provide for pivotal movement of said latch in response to a rocking movement of said shaft, means for rocking said shaft in one direction to release said catch member from engagement with the latch at said opening, and tension means for rocking said shaft in an opposite direction to pivotally move and yieldably hold said latch in a position for engaging said catch member.

GILBERT E. COATS.