US1442117A - Loading machine - Google Patents

Description

Jan. 16, 1923.

F. BILLINGS'ET AL. LOADING MACHINE- FILED SEPT. :6. 1918.

4 SHEETS-SHEET l- Jan. 16, 1923.

7| 1 1-H 2 4 1 L A l F- S G N nL m ch LOADING MACHINE. FILED SEPT. 16, 1918.

4 SHEETS-SHEET 2- Jan. 16,- 1923;

F. BILLIINGYS ET AL.

LOADING MACHINE.

FILED SEPT. 16. 1918.

I 4 SHEETS-SHEET a.

Jan. 16, 1923. 1,442,117. F. BIL LINGS ET AL.

LOADING MACHINE. FILED SEPT. 16, 1 918. 4 sucsrs snzn 4.

III

5 o L p. llllllllllllllll llllflfl 65 Patented Jan. 16, 1923.

UNITED STATES FRANK BILLINGS AND awe-e swi er r emissary-9m sell? e re iser A is -res. r sA e BI -tires;

LOADING MACHINE.

Application filed September To all whom it may concmm:

Be it known that we, FRANK BI LiNns and Roennr P. Gnnnurlnar, citizens of the United States, and residents, respectively, otCleveland, in the county of Cuyahogaand State'oi Ohio, and Cleveland, in the county of Guyahoga and State of Ohio, have invented a certain new and useful Improvement in Loading- Machines, of which the following is] a fulh clear, and exact description.

This invention relates tofloading appa ratus, and is in some respects an improvement over the construction constitutii'ig the subject matter of our prior application filed July 9, 1917, SerialNo. 179,301, renewed February 21, 1918, Serial No. 218,592, now

Patent No. 1,286,168, issued November 26,

shifted. the arms and shovel are given a combined movement of translation and r0 tation so as to carry the shovel from a point 7 in front of the machine. rearwardly and back over the machine to dumping point, and from the dumping; point back to diging position, the shovel being filled on the forward stroke of the ram.

The present inrentionhas for its chief olojeets the provision of means Whereo in a machine of the general type-above described the she-rel will he given a greater linear movement while heingturned so as to, carry it over the machine. so-that the shoyel will discharge. well toward the middle of the car which is designed to receive the material at the rear of the machine. Additionally the invent-ion aims to provide means whereby the desired linear and rotary movements are obtained with relatively small gears. and with the gears and racks located well above the vground. and the racks which impart the 16, 1913. SerialNo. 25;,262.

rotary movement,- inuerted' so that they are.

not easily fouled with dirt or ore.

Still furtherthe. invention aims to provent the shovel being extended upward-1y more than a predetermined d stance .QIlQQYB.

the mac ine, While the swinging and rotary movement are tak ng place, and which in -iact swing r meve in such t shi nhat the point .ofthe shov lis never higher a any part f th path t he vs inging m v t than When in the .clischarging p sition at the rear of the ma ine,

Further the inventionaims to provide a meehinerha ng a large rang if movem nt tha the d gg gan co v ying member can be caused to operate on the material ughout a i 'evl te mine l range whi h file pends upon the length of the ra n stroke;

h nv tiim m y b efiy summar zed as consisting in certain novel details of construction and comhinations and-: arrangent of, eel-t w ich will e .cl scri ed n the ep ific -ti n and te th i the anapended claims.

n-th a c mpany ng sheets f drawing Fig. 1 is a side elevation of our i nprgnedniaehine with theshovel shown i? lines 111 damning po it- .01 and n let mes-1x io th i esition b ive e ll damn; i

s an iss n P on 11* is 2 e mp.

P View cf he Sam With-th sh v emit:

d; nd he sl1 r lS e1n t ng brek e awav' Fin". 3' is a: side .-vie\ with the matime .Y

h n xtende and al o sums t po itiee a gh n le t th hem t ei ht ng e t th p si o w 11. Figs 1 and" 2; Fig. 4: is a detail sectional iew through the trolley and through the shoxfel swinging,

Fii 5 is s hin sh win h forward end of the mm; Fig. 6 is a rear iew ge ars associated thereivitl tial front view of the mgr of the n achine-rvith the shovel indunrping p si e a iS ec na V w substantially along the line 77-? of 1F ig 1 and Fig. 8 is a partial transverse sectional yiew sub} stantfially fi lOll l' -ieline 8+8 of 1.

The machine includes an, truck 10,, with Wheels'll, designed to, run over the rails of a track 12 towhich the machine may he clamped with quick acting screw track clamps 13, which can be hooked over the ends of the machine, and require no bolts for their attachment. The truck can be braced against tipping when the digglng and conveying mechanism is swung to one side of the machine by quick acting jack arms 14 which can, be attached to the truck by hook plates and require no bolts, one of the jack arms being shown in Fig. 3.

In addition to the parts above mentioned, the truck includes a semi-circular track 15 and a fixed gearlfi acting as a fifth wheel for supporting the superstructure Mounted on the truck by means of a pivotal kingpin 17 (see Fig. 8) at the centerof the fixed gear, and by means of rollers 18 engaging the semi-circular track is thesuperstructure consisting, of the digging, swinging and dumping mechanism and supporting parts designed to be swung on the truck through a complete semi-circle so that material at the sides as well as in front or" the machine can be reached and loaded into cars brought up to the rear of the machine.

This superstructure includes a large cylinder 19, forming part of the reciprocating motor which actuates the ram, this motor and two additional motors to be referred to, being preferably actuated by compressed air, though it is not essential to our invention that air motors, or even reciprocating motors be employed, for we now contemplate manipulating the operating parts embodying the features of this invention by one or more electric rotary motors.

This cylinder 19 which extends lengthwise of the superstructure and is fixed relative thereto, is supported at its rear end by the fixed gear 16, and forwardly of the gear by the rollers 18.

At opposite sides of this cylinder are U-shaped guides or trackways 20, each con sisting in this case of angles forming outwardly facing channels. These guide-ways are fixed relative to the cylinder 19. Though these U'shaped guides or track-ways 20 may be formed in other ways than herein illustrated, in Fig. 7 each guide-way is shown as composed of an upper angle, and a lower angle 20 having their. horizontal flanges facing outwardly and their vertical flanges overlapping so that they may be secured together and to a part 2O which may be a part of the cylinder '19 or a member secured thereto.

The plunger 21 of the cylinder 19 actu ates a forwardly and rearwardly reciprocating ram formed in two parts, each at one side of the cylinder, and each part composed of two angles 22, spaced apart, forming aslotted guide or runway, each ext-ending substantially the full length of the ram.

The forward ends of the two parts of theram are connected to a heavy cross-head 23,

to which the piston rod of the cylinder 19 is connected, as shownin Fig. 1. Additionally the side sections of the ram are connected together from their rear ends to about the middle of the ram by a cylinder 24: of a trolley actuating motor.

This ram and the parts carried by it are mounted for reciprocating movements in the guide-ways 20 by rollers 25 carried by the rear portions of the ram, and the ram is further supported by rollers 26 carried by the forward ends of the guide-ways and engaged by the ram.

Arranged to run lengthwise of the slots of the ram between the angles 22 composing each side thereof, is a trolley or carriage 27 each side formed by an angle 28 having a pair of spaced rollers 29 engaging the flanges of the angles forming the guide-way or slot at the corresponding side of the ram. This trolley is actuated by a cross-head 30 connected to the plunger 31 of the upper cylinder 24, which as before stated, is carried by the ram and connects together the two sides thereof.

This cross-head, as will be seen by F ig., 7, has at its ends a pair of pinions 32 which,

engage two pairs of racks including two upper racks 33 and two lower racks 34- carried by the angle members 28 on the two sides of the trolley. The upper pair of racks are connected to the upper portions of the two sides of the ram by U-shaped crosspieces 35, whose ends are attached to angles 36 secured to the upper pair of angles 22 of the ram. It might be mentioned at this point, that the cross-head 30 which reciprocates the pinions 32, has a pair of Z-shaped guide members 37 (see Fig. 7) whose upper outer ends slide in grooves of guide-ways formed between the racks 33 and bars 38 attached to the U-shaped crossmembers I Thus it will be seen that as the cross-head is reciprocated relative to the ram, the pinions 32 are carried backwardly or forwardly, and since they engage the relatively stationary racks 33 (carried by the ram) and the racks 34 carried by the trolley, the trolley 27 is reciprocated and is given twice the movement of the cross-head, and is actuated at twice the speed of the cross-head. Through this mechanism including the rack and pinion gearing by which the movement of the cross-head 30 is multiplied, or by which the stroke of the trolley is made twice as great as the stroke of the actuating are run up onto the track at the rearv of the machine, one of these cars being shown at 39 in Fig. 1, by a-shovel 40, similaryto that" shown in our prior application-,zthis shovel having a lower digging edgeand an open front so that the material can be scooped up on theforward'stroke of the ram. As in our :prior application ,th-isshovel is; given a combined" rotary movement andmovem'ent of translation 'so as to cause it to be moved from a'position in front of the machine upwardly and rearwardly to dumping position. and forwardly and downwardly to digging position, but the mechanism for accomplishing this is specific-ally 2 different from that shown in our prior application, and has certain: advantages over the. latter. In accordance 'wi'h our present invention, each side of thetrolley-ihasa'gear41 which meshes with an overhead inverted rack 42 instead of a lower-rack'whose teeth project upwardly as in our priorapplication,but in view of the long movement f the carriage in this-instance, as evidenced by the lengthiof the racks 42* which'are carried by the ram and extend throughout. the major portion of the length of the latter, not only in one stroke ofthe trolley would. a greater angular movementheimparted to these gears 41 than could be imparted to the shoveland the arms connecting it tothe trolley, but since the racks 42 are inverted, the gears 41 rotatein the opposite direc-v tion to the rotation of the shovel and shovel supporting arms. We'therefore; employ a form of compound-gearing to cause the linear movement imparted tothe trolley to impart rotary movement to the shovel, and provide at the side of each gear 42, whichis preferably mounted on the pin which supports the forward roller 29*of: the trolley (see Fig. 4) a ;'pinion 4.4, which pinion rotates with the associated gear 41 and may be integral therewith as indicated in Fig.

4, or, of course, may be a: separatelpinion. secured to the gear '41. Each pinionf44 meshes with a gear 45 and rotatesit in the opposite direction to the rotation of the pinion 44, which gear 45 is .j'ournaled' on the pin 46 which supports the rear rollers of the trolley, this pin beingfixed -in :position. The direction of rotation ofthe gears 45, (one at each side of the trolley).is the same as the direction of rotation of the shovel supporting arms, and-*the sizes' off the gears are so selected that with a given stroke of "the trolley the desired'..angular movement is imparted to the gears 45, which angular movement is the same as the' an gular movement of the shovel supporting arms in their travel from digging position to dumping position, and vice versa.

Fixed to these gears :45 in any-suitable" manner so as to rotate"therewith',} area 48. are two additional shovel supporting rms-49., which are secured to thesi'des of the-ishovel4 O by" bolts or otherwise. The

angular-positions of the arms 49 and shovel 40 can-be adjusted to adapt the'lower digging. edge of the shovel for any selected depth of cut.

; Inaddition to. these' pivoted arms 47 and .49, certain links are utilized to control the relative angular positions of the arms and" to. change the relative positions of the arms as'the shovel is passing through its cycle of movement, and thereby control or'limit the pathof movement of "the highest point of the shovel in. its swinging movement over long links-5.0 which are pivotally connected at 51' .to the forward arms 49 a short distance beyond the pivotal: "points 48.:

' the machine. These links. include relatively The lower or inner ends of these links 50 are pivotally connected at 52 to relae tivelyshor-t links 53' which in turn are piv- I I oted at 54 to short fixed arms 55 which are secured to the fixed roller supporting pins 46. These arms 55 at-"all. times project rearwardly substantially as shown in Fig. l and in Fig.1 3. Each arm 55 is provided with a shoulder 55 which is engaged by one face or edge 53 m. the associated short link 53 to limit the movement ofthe link in 'one directionre'lativeto this arm, and the shoulder55 is engaged by a second shoulder .53 of thelink to limit its swing;

ing movement relative to the arm in the Likewise each of. the

opposite direction.

arms 49 has a shoulder 49wvhich adaptf ed to beengaged by one edge of the asso} ciated arm 47 to limit'the swing of the arm-49 in one direction-relative to the as.- sociate-diarm 47 g f :The mechanism so far described, operates in the following manner. I tarting with the parts inthe position shown in Fig. 1, which shows the shovel in" "its extreme rear, or dumping position, the cross-head 3Oconne'cted to'the plunger of the upperjcylinder 24 is'moved forwardly, and this movement through the racks 33 and 84 and the pinion 32j'fmoves the-trolley: forwardly a distance equal to twice the movement ot' the crosshead, and sufliciently, in factpto carry the 1 shovel f roma 'po'sitionwell back of the ina- 1 chine toward the middle of the receii' ing car 39,-to digging'position in front of the inachinew The forward niovenientofthe trolley through :the racks 42 and" gears 41, 44

and-45 causes the shovel and shovel support- 7 111 51 arms't'o be swung with a coinbined ro'stary and 'linearmovement from the duniping position shown in Fig. l to digging position in front ofthe machine, and the reverse movement of the cross-head connected.

to'the plunger'o'i the upper"cylinderswings .the loaded shovel from the front .of the mament of the ram, and in fact, the pistons in the cylinders of both motors may be actuated simultaneously or successively. In practice the shovel will be elevated slightly after being moved outwardly to filling position, and then the pistons of both cylinders may be retracted at about the same time so that the upward and rearward swinging movement of the shovel can takepla'ce while the ram is being retracted to save time, but the ram can be wholly retracted before the upward and rearward swinging movement is given to the shovel to dump the contents of the shovel into the car.

When the shovel. starts to swing forwardly from the position shown in Fig. 1, the links 50 for a period act as thrust or compression members tohold'the shovel and arms 49 upwardly, the edges 53 of the short links then engaging the shoulder 55 of the fixed arms 55, and as the shovel swings from its rearward position forwardly toward the overhead position, the angularity of the arms 47 and 49 gradually decreases at such a rate that the highest point of the shovel, which is the digging point, travels forwardly in substantially a straight line and at no part of its path of movement is it higher than the shovel is in the fulllinc position of Fig. 1.

As the shovel continues its forward movement, the arms 47 and links 50 gradually assume a crossed position, and when the center of gravity of the moving parts passes beyond the vertical line, the links 50 become tension members and allow the angle between the arms 47 and 49 to gradually increase until the shoulders 49 of the arms 49 engage the edges of the arms 47 after which all the swinging parts including the arms 47 and 49 and links 58 swing as a unit said links 53 then turning about the axes 54 to permit this action and the shoulder 53" engaging the shoulders 55 when the shovel reaches its lowermost position. If thetrolley is permitted to move forwardly to the limit of its forward permissible movement, the shoulders 53 and 55 engage, but otherwisethey do not.

When in digging position, shown in Fig:

3. the links 50 resistcollapsing of the arms 47 and 49 under the thrust created by the,

forward movement of the shovel into the material, these links then acting as struts or compression members, but when power is applied through: theqgearing to the arms-:47 to elevate the shovel, the links will not preventthis movement nor the relative shifting of the arms'47 and 49 during the, backward and upward travel of theshovel to dumping position.

To permit rapid operation of the ma chine, buffers are providedto limit the rearwardand forward swinging of the parts and the rearward andfo-rward movements of the trolley, and in addition the forward buffers which are capable of adjustment, are utilized to vary the forward travel of the trolleyi-elative to the ram, and hence the height of the shovel from the/ground, ,this beingrof importance when it is desired to vary the plane of cut. I 4 v The bufiers which limit or stop the rear-.

wardmovement, consist of pins or plungers 56 (see particularly Fig. 2), the rear ends ofthese plungers having laterally extended portions 56 adapted to be engaged by the arms 47 as the latter are approaching-the end oftheir rearward swinging and: linear movement. These. plungers 56: which are carried by the ram, aresurrounded by buffer springs 57, each located between one of the I guides 58 for the plunger anda shoulder 59 movable with the plunger. 7 i l The forward movement of the trolley isv checked yieldinglyvby ani adjustable device at the forward end of the ram, this device consisting of a pair of yieldable plungers- 60, surroundedby coil springs 61 and carried at. the outer ends of a cross-piece 62 at the extreme frontl'endof the rain, these plungers 60 being in the path of movement of, and adapted to be engaged by the for f ment of the shovel and shovel supporting arms-is derived from'the movement of the trolley, by stopping the forward movement of thetrolley at varyingdistances from its extreme forward movement, the height ofthe digging edge of the shovelcan be varied. In addition to the buffers above described,

cushioning effects can be obtained in the cyl inders through the compression of air ina well known manner.

When the material is located at any considerable distance from the center of the track, it will be necessary to swing the superstructure about-the axis of the king.-

pin, and thisis accomplished in this case by a third motor including a small, cylinder 65 whose plunger 66 carriesfla rack 67 (see Fig, 2) which rotates .a pinion- 68 meshing with the fixed gear lfi it being understood that the pinion 68 aswell the rack and cylinder which operate it are carried by the superstructure so that all these parts can turn with reference to the axis of the gear 16 which is the center of movement ofthe superstructure. i i

Thus it will be seen thr'ough the twopairsof racks 33 andBt, and the pin-ions 32, so as to have the long linear movement which is] imparted to the shovel supporting arms, and when combined with the rotary movementis such that material will be carried from infront of the machine and dumped or discharged well back of the machine, and preferably near the middle of the car to minimizespillage, and to do away with the necessity of a laborer to level or spread-v the -material dumped intothe car. I

Additionally it will be seen that by the compound gearing by which rotary movement is imparted-to the shovel and shovel supporting arms, the right angular movement is imparted tothe shoveland arms without requiring exceedingly large gears, and the gears as well as the racks which cooperate therewith may be located well above the ground, and furthermorethe racks which co-operatelwith these gears may be inverted so that they are, not easily cloggedwith dirt. Finally it maybe noted that thera'm is covered entirely by ;a metal roof which excludesdirt from the gearing and otheryop-i crating parts, this being particularly useful in view of the fact that the shovel loaded with-material is swung over the'machine. There is only one pair of racks withteeth extending upward, but these r'aclzs are well under the cover or roof 70', so that dirtor other material is not. liable tolodge between their teeth.

' The particular advantage Of'lihfl' supporting mechanism for thefshovehi. e; the mechanism connecting the shovel andthe'trolley lies vin the factth-at with-the pivoted: arms,

and the links whichcontrol the angulari'ty or relative swinging movement of these-arms, the path of movement 'of thehighest point of theshovel can be controlled. with; the parts} working smoothly and withoutbinding, regardlessof; the position of the shoveland of the supporting parts; associated with it. I

Having described our invention, we claim:

1. In a loading machine, a frame or truck,

a shovel adaptedto be filled withmaterial at the front owfi :the machine, means forgiving said shovel a filling stroke, and additional means forgiving said shovelra combined-rot'ary! movement and a "movement oftransla that with the mechanism above described, the trolley is actuated tion over the machine, said means comprising I a forwardly and rearwa'rdly' reciprocating and rearwardly reciprocating device connected to the shovel, and mechanismbetween power actuated device, a 'secondrforwardly said reciprocating devices byiwhichl the first I the econd I, a multi li d mow translation over the machine, said means I comprising a reciprocating ram for-moving thefshovel forwardly (and rearwardly, a car.-

riage movable lengthwise offthe ramjand connected 'to the'jshovel, and mechanismfor actuating I the carriage including a' j'recipro-o eating multiplying member, and movement actuating mechanism between'saidactuating memberand-thecarriage; i

3. Ina loading machine, aj'fra'rne or truck,

a shovel adapted to be filledwith material at th frontl of the machine, meansfor giving said shovel a filling stroke and additional means for giving said shovel a combined r0'-' tary movement andfa movement of-translae tion over the m'achine-,-said means compris ing a'forwardly and rearwardlymovable trolley, a r forwardly and rearw-ardly; movable actuating devicefor the trolley-andmultiplying gearing between saiddevicejand the trolley. u 4. In a loading machine, a; frame orjtruck,

a shovel adapted to. be moved. forwardly and l ar ly at. h fron f theimae ne, and r means forgiving said Qshoyel a'i filli ng stroke d a eomblned ot ry movem nt d; movement of translat on over the machine whereby material may be dumped at the rear x thereof, saidmeans comprising at-rec procate.

ing rain havingguide-ways' a trolley movried by the rain for shifting thetrolley, and

, movement multiplying; gearing! between said mechanism and the "trolley.

rearwardly'at the front of themachine, and

{able along the guide-Ways-andconnected to; the "shovel, power actuateclmechanism care" means for giving said shovel a, combined ro;

tary movement and. a movement of 'tr-ansl a tion over the machine whereby material'may be dumped at the rear thereof,- said'I-mecha nism comprising a carriage orl trolley contnected to the shovel, and gearifng-fprimparte ing rotary movement asthe carriage or--trel,.

ley is reciproe-ated; comprising aninverted rack,l a1id' agar-engaging the-same. ,6. In a loading machi e, a frame or truck, a shovel adapted to be" filled' with material at front of t achine, i lm a v for-g v 'ing said shovel acombined rotary movement.

nea movement; of;

tran lation n er th ea of the arms.

chine, said means comprising a forwardly and 'rearwardly reciprocating trolley connected to the shovel, and means for'imparting rotary movement during the reciprocation of the carriage or trolley comprising a rack and a trainof gears, one engaging the rack and a second which derives its motion from the first and has its own rotary motion transmitted to the shovel.

- 7. In a loading machine, aframe or truck, a shovel adapted to be filled with material at the front of the machine, and means for giving said shovel a combined rotary movement and a movement of translation over. the machine, said means comprising a for wardly and rearwardly movable trolley, arms connecting the shovel to the trolley and rotatably' supported thereby, an inverted rack, and a trainv of gears including oneengaging the rack and one connected to one of said arms. v

8. In a loading machine, a frame or truck, a shovel adapted to be filled withmaterial at the front of the'machine, and means for giving said shovel a rotary movement and a movement of translation over the machine, said means comprising a forwardly and rearwardly reciprocating device, arms connecting the shovel to said device and rotatably connected therewith, a pair of racks, and two trains of gears each having a gear engaging on of the racks and a gear connected to oneof the arms, said second-named gear deriving its motion from the first-named gear, but rotating slower than the latter;

9; In a loading machine,a frame or truck,- a shovel adapted to move forwardly and rearwardly at the front of the machine, means for giving said shovel a forward and rearward movement at the front of the machine and a combined rotary movement and linear movement over the machine whereby material may be dumped at the rear thereof, said means comprising a forwardly and rearw'ardly reciprocating ram, a carriage adapted to be reciprocated lengthwise of the ram and carried by the latter, arms connecting the shovel to said carriage andr'otata-bly connected therewith, racks carried by the rain, and trains of gears between said racks and said arms, each train of gears including a gear engaging one of the racks, and a sec- 0nd gear which derives its motion from the first,'but is rotated at a less speed than the first, said second gear being connected to one 10 Ina loading machine, a frame or truck, a shovel, means for movinmthe shovel forwardly and rearwardly at the front of the machine whereby itmay be filled with material and for giving said shovel a combined rotary movement and a movement of trans v lation over the machine, said means comprismg a reciprocatmg ram, a power actuated device movable forwardly and rearwardly 'ing a gear engaging one of saidracks and a gear driven by the first-named gear and having a connection with one of said arms.

11. In a loading machine, a frame or truck, a shovel adapted to be filled with material at the front of the machine, means for causing said shovel to be swung over the machine so that the material may be dumped at the rear thereof, said 'means comprising a member movably supported by the frame; or truck, a pair of arms connecting-said. member to the shovel, one arm connected to the shovel and the other connected to said member, and the inner portion of thefirst arm and-the outer portion of the second arm pivotally connectedtogether, and means for causing said arms to be moved relatively about their pivotal axes while the swinging movement of the shovel is taking place whereby the height of the shovel above'the ground is controlled.

12. In a loading machine, a frame or truck, a shovel adaptedto be filled with material at the front of the machine, means for swingiiig said shovel from in frontof the machine to the rear thereof and back tov the front, said means comprising a member movably supported on the frame or tru 'ck,-'and two pairs of arms connecting said member to the shovel, the arms of each pair being connected, one to the shovel and the other to'said member, and the inner portion of the first and the outer portion of the second being connected together between the shovel and said member, and means for causing a relative angular movement between the arms of each pair during the swinging movement whereby the height of they shovel above the ground is controlled. and limited.

131111 a loading machine, a frame or truck, a shoveladapted to be filled with material at the front of the machine, means for giving said shovel a combined movement 'of' translation and a swinging. movementover the machine to dumping position at the rear thereof, said'means comprising a forwardly and. rearwardly traveling member, arms connecting said. member to the shovel and adapted to be turnedduring the forward and rearward movement, said arms being, pivotally connectedtogether between the shovel and said-member, and one being rotatably connected to said member and. the-other connected to the shovel, and means for causing. the angle between said arms to change while the turning movement is taking place.-

14. In a loading machine, atruck'or frame,- a" ram supported-for forward an r arward,

movement, a trolley adapted to be reciprocated forwardly and rearwardly along the ram, a shovel adapted to be filled with material at the front of the machine on the forward stroke of the ram and be given a combined movement of translation and a turning movement over the machine, arms connecting the shovel to the trolley, means for turning said arms as the trolley is shifted, said arms comprising parts one connected to the trolley, and the other to the shovel, and at a point between the trolley and shovel being pivotally connected together, and means comprising links connected to certain of said parts for causing the angle between the latter to vary as the shovel is swung over the machine.

15. In a loading machine, a frame or truck, a shovel adapted to be filled with material at the front of the machine, a member movahly supported by the frame or truck, means connecting the shovel to said member and adapted to be turned to impart a swinging movement, said means comprising arms, one extending outwardly from said member, and having its outer portion connected to the inner portion of the second arm, and the latter having its outer portion connected to the shovel and means for resisting relative turning movement between said arms while the shovel is being filled.

16. In a loading'machine, a frame or truck, a shovel adapted to be filled with mate-rial at the front of the machine, means for causing said shovel to be given a combined movement of translation and a swinging movement over the machine, said means comprising a forwardly and rearwardly moving member, and means connecting said member to the shovehadapted to be turned to impart the swinging movement, said means comprising a pair of arms, one rotatively connected to said member, and the other connected to the shovel, and the two arms connected together between said mem her and the shovel.

'17. In aloading machine, a frame or truck, a shovel adapted to be filled with material at the front of the machine, means for causing said shovel to be given a combined movement of translation and a swinging movement over the maclnne, sald means comprisv ing a forwardly and rearwardly moving member, means connecting said member to the shovel adapted to be turned to impart the swinging movement, said means comprising arms, one connected to the shovel, and having its inner portion. connected to the outer portion of the second arm, and the wardly, a shovel, arms connecting the shovel to the trolley, saidarms being pivotally connected together and adaptedto be swung relatively about their pivotal axes during portions of the swinging movement of the shovel, and means comprising engaging shoulders by WhlCh the arms are held against relative swinging movement during certain portions of the movement of the shovel.

In testimony whereof, we hereunto affix our signatures.

' FRANKBILLINGS.

ROBERT P. GREENLEAF.

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