US1246762A - Loading-machine. - Google Patents

Description

N. D. LEV IN.

LOADING MACHINE- APPLICATION FILED' JAN. 13. 1912. RENEWED OCT. 1. P911.

Patented Nov. 13, 1917.

5 SHEETS-SHEET l- N. D. LEVIN.

LOADING MACHINE.

APPLICATION FILED ]AN. 13.1912. RENEWED OCT. 1.1911.

Patented Nov. 13, 1917.

5 SHEETS-SHEET 2.

N. D. LEVIN LOADING MACHINE.

APPLICATIUN FILED 1M. 13.1912. RENEWED'OCT. I, 1911.

Patented Nov. 13, 1917.

5 SHEETS-$HEET 3.

ounce-once ooneo 0000 Pigented Nov. 13, .1917. Q s SHEETS-SHEET 4 gk &

N. D. LEVIN.

LOADING MACHINE. APPLICATION FILED JAN. 13; I912- RENEWED OCT. 1917- 1,246,762.

w v 1 1 h mm I N. D. EEVIN.

LOADING MAQHINE.

APPLICATION FILED 1AN.I3.I9I2. RENEWED OCT. 1.1911.

Patented Nov. 13, 191'} 5 SHEETS-SHEET 5- BEST AVAILABLE COP UNITED srarns PATENT. ()FFICE.

NILS n. LEVIN, or oo UM'BUs, onro, ASSIGNOR are THE JEFFREY iamwrncr'unme COMPANY, A. conrona'rron or 0310.

LOADING-MACHINE.

Specification of Letters Patent.

Patented Nov. 13, 191?.

Application filed-January 13, 1912, Serial No. 671,037. Renewed October 1, 1917. Serial No. 194,285.

l0 -The invention relates to mechanism designed for the loading of loose materials.

4 'The. objects of the invention comprise the provision in a machine having relatively fixed and movable frame parts of an im- .5 proved construction and arrangement of power mechanism for operating the machine. Afurther object is the proved construction an mounting of the conveyer part of the machine to a cilitate '0 the delivery of the material into cars.

I have sought furthermore to design a loadin machine adapted for use in mines to loa the coal broken down at the face into cars b which it is transported from {-the'mine.-. 11 coal mines the head room is fusually quite limited and there are relatively narrow entries with sharp bends through which any machine that is to be used must be transported. Various features of my im- 0 proved machine are incident to these workmg conditions as will readily be understood from the description which follows.

The invention consists of the construction,

arran ement and combination of parts set 5 forth in the followin description andclaims inconnection with t e accompanying drawings which show the preferred form of'the invention.

Ofthe drawings,

0 Figure 1 is a side elevation of the machine in operative position. p y 0 Fig. 2 is a somewhatdiagrammatic detail view showing the manner of using a rope in connection with certain of the machine parts to move .the machine from its inop erative position, in which it is adapted to be transported from place to place, as shown in Fig. 3, to its operative position, as shown in Fig. 1.

Fig. 3 is a side elevation showing the machine in inoperative position, that is, in position for transportation.

Fig. 4 is a somewhat diagrammatic detail provision of an imviewshowing the manner of'using a rope to move the machine from the operative position, shown in Fig. 1, to the inoperatlve position shown in Fig. 3.

F1g. 5 is a plan view ofthe machine.

' Fig. 6 is-a plan view of the truck which.

supports the conveyor part of the machine.

Fig. 7 is a detail plan view of the bracket or arm upon'which the conveyer frame is swiveled.

Fig. 8 is an enlarged fragmentary detail view showing some of the driving mechanism of the loader, some of the parts shown being in vertical section taken in thecentral Ylo'ngitudinal plane of the machine, while other parts are shown in elevation.

Fig. 9 is an enlarged front elevation of some of the parts shown in Fig. 8.

Fig. 10 is an enlarged detail view of the driving pawl which actuates the drum and cable mechanism.

Fig. 11- is an enlarged plan view of the drum winding mechamsmwhich is arranged beneath the pan or frame of the conveyer.

Fig. 12 is an enlarged upright sectional view of the supporting bars and plates carried on the under side of the conveyor frame,

the section being taken on the line 21-21 of Fig. 13.

Fig. 13 is an enlarged longitudinal section taken on the line 22-22of Fig. 12.

Referring indetail to the construction illustrated, 1 designates the main frame or body part and 2, 2 the wheels of a truck designed to run upon track rails and, to afi'ord suitable support for the working parts of the-"loader. This truck has a rear-' ward extension comprising side bars 3-, 3, a front cross-bar 4 and a rear cross bar 5, This'extension is swiveled upon the rear axle of the truck and carries forward projecting arms 3, 3 which extend beneath the body 1 o'fthe truck and serve to limit the relative movement of said body and of the extension I about the axis of the rear axle of the truck.

Upon the outer ends of the cross bar 5 of the truck are mounted flanged track wheels 6, 6. The cross bar 4 of the truck extension carries a pivoted dog 7 which is adapted to be enga ed with a plate 8 carried by an upright lock 9 onthe frame 1 of the truck.

When the truck extension is raised and the dog 7 is swung over to engage the plate-8} BE T AVAILABLE COP the extension isheld in elevated position, as shown in Fig. 3; but the locking dog 7 can be lifted to allow the truck extension to fall and its flanged wheels 6 to rest upon the track rails, as shown in Fig. 1.

The side barsl 3, 3, of the truck extension have upward" extending arms 3", 3 which support an arm or bracket, which is designatedas an entirety by 10. This arm or bracket 10 consists of two upright bars 11, 11, each of which is pivotally supported at its lower end on one of the arms 3", and a triangularframe 12 which is slotted at its front side to receive the upper ends of the bars 11 and which'is pivotally connected to said bars.

The truck extension bars 3 or 3 are provided with a series of holes 13' and the bracket bars 11 can have their lower ends pivoted in either of said series of holes except the upper one which is designed to receive a pin 14 to hold the bars 11 in upright position, as shown in Fig;- The triangular bracket part 12 is formed at either side with depending lugs 12* and each of the arms 11 carriesan adjustable contact screw 15' adapted to engage the adjacent lug 12,

these lugs and screws bein designed to form an adjustable stop to, llmit the '"relative movement in one direction pf the bracket parts 11 and 12. p

The rear end of the bracketlO forms apivotal bearing support for the rear end of a conveyer which comprises an elongated frame designated as an entirety by 16. This {frame consists of a pan part 17 which has sfiaring side walls and which is divided into I two parallel troughs by the two parallel longitudinally extending chain guides, each 0 of which consists essentially an upper angle bar and a lower an le bar 19. The pan parts '17 and the angle ars,18 and 19 are rigidly vconnected by various transverse structural bars, plates and castings, such as the bars 20, plates 21 and 22 and castings 23 and 24:, the casting 23 being at the lower end of the inclined part of the conveyer frame while the casting 24 is at discharge end.

The forward gathering end" of the conveyer comprises a section which is pivotally connected with the main part of the conveyer frame. This front section of the frame has a casting 25 which is pivotally connected to the frame casting 23 and carries a shoe 25 adapted to rest upon and slide its rear or over the ground. At the front end of the section-there is a two-part casting 27, 27, and these castings 25 and.27, 27 are connected bythe chain guide angle bars 18 and 19, the whole forming a rigid frame structure adapted to rest upon and follow the surface of the ground. This front frame section while pivotally connected to the main section is limited in its'movement relative to the latter by a rearward extension of the casting 25 which is adapted to engage the casting 28 on the main section.

The lower edge of the angle bars 18-is the motor to be hereinafter described. The

shaft of this drive sprocket has its lower end mounted in a socket the lower end of which is rounded and fits loosely in the socket 12 at the inner end of the triangular frame 12, This provides a loose pivotal connection for the forward end of the conveyer which permits it to rock vertically, as well as be moved laterally.

At the front or oiiter end of theconveyer the chain passes around an idler sheave or sprocket wheel carried by the casting 27, 27., which are secured together by olts, or other suitable means. These casting-parts are preferably shaped to form a semicircular continuation of the chain guide formed bythe angle bars 18 and 19. Inthis way the flights of the conveyer are firmly supported as they pass around the front end or nose. This firm support is necessary because the material is taken on the flights as they move around the forward extension of the conveyer frame and it is essential'that the flight be held firmly to the work in order that they may be forced under the material to be loaded.

It will be noted on referring to Fig. 5 that the pan part of the conveyer frame is-cut away at the front end of the machine so as to expose the flights as they move around the front pivoted extension and enable them to advantageously attack the mass of material which is to be taken on and conveyed to the point of discharge. The pan structure is cut away similarly on both sides so that the conveyer can be swung on its rear pivotal support either to the right or to the left to advance the flights agalnst the material, it being understood that the conveyer chain is driven in one direction when the machine is swung to the left and in the opposite direction when the machine is swung to the right.

At the rear or discharge end of the conveyer also the pan part of the frame is cut away so that the flights are freely exposed on all sides as they pass around the rear side of the driving sprocket wheel. As the flights move around the sprocket wheel they are separated from each other so that much of the material carried upon the flights will arts BEST AVAILABLE COP fall of its own accord from the conveyer. But toinsure the discharge of all the material an adjustable knock-off device is provided. This is preferably in the form of a metal brush 39 mounted on the end of a swinging arm 40 and disposed so as to lie directly over the flights as they pass around the driving sprocket wheel and scrape from the flights any material that does not fall. of its own accord. The arm 40 is pivotally mounted on a pin 41 carried by shaft 32 and a plate 42. The brush 39 carries a depend- .ing arm 39 arranged to swing between and engage the inner edges of aprons 48, 43 which are secured to the conveyer frameas shownin Fig. and iserve tokeep the dischargeof material within suitable bounds. The conveyer flights tend to drag the knockofl brush with them in their movement sov that the brush is heldwith its stop arm 39" against one or the other 'ofthe aprons 43 according to the direction of movement of the flights; and when the movement of the flights is reversed the brush is automatically swung from one side to the other and is therefore always in suitable position to effect the discharge of material from the conveyer.

When the machine is in operative position, as shown inFig. 1, the conveyer frame is supported from the truck at one point only, namely, at the rear end of the arm or bracket 10,the' front end-of the conveyer frame resting upon the ground. But when the machine is being moved from place to place it is necessary that the conveyer frame e carried entirely by the truck, as shown in' Fig. 3. The truckis'therefore provided with'a bail 44 pivoted above the rear a'xle ofthe truck and having a transverse part 44 at its free or swinging vend disposed above the front axle of the truck. 45, 45 are notched segmental arms swiveled upon the front axle of the truck and adapted to receive lateral extensions of the crossbar 44 so as to support said bar at different elevations. i

When the truck is in operative position 'she segments 45 are swung downward, .as shown in Fig. 1, and when the machine is to ac transported from one place to another shese segments can be swung upward into OII16 such position as that shown in .Fig. 3, where the bail is shown in a raised os1- aion such that the cross bar. 44" furnishes m elongated support for -the front part of ;he conveyer frame, the said frame being rovided on its under side with'-longitudi-' ially extending bars46 and 47, thelatter 1f which is arranged to rest upon the cross )ar 44 of the truck bail. When the forvard part of the conveyer is thus supported he rear end is supported not on the rear and of the armbut-on the transverse-bar .2 of the arm section 12, the conveyer frame having a transverse bar or plate arranged to rest upon the said'cross bar 12.

Thus when the machine has been moved into the position shown in Fig. 3 the weight of the rear part of the conveyer is transmitted through the bracket arms 11 to the truck.

drive the conveyer chain and to feed the machine is mounted entirely upon the swing ing conveyer frame. 49 is a motor, preferably an electric motor, though a compressed air orother engine may be employed. The motor is suitably supported'from the frame of the conveyer with the axis-of its armature shaft extending longitudinall of the conveyer-frame.- At its front end t e armature shaft carries a pinion 50? which drives a gear 51 and this gear is connected by means of a friction clutch 52 with a longitudinally extending shaft 53. shaft carries a pinion 54 that drives a gear 55" which is fast on a shaft 56. The shafts 53 and 56 are suitably supported in bearings carried by the conveyer frame, as shown'in Fig. 8. 57 is a shaft disposed in'axial alin'ement with the shaft 56. The front end of the shaft 57 is keyed to a sleeve 58 which has a ball and socket'bearing support 59. The back or inner end of shaft 57 is connected, by gear and pinion means, or other suitable means, to the drive sprocket so as to cause rotation of the same. .Thesleeve 58 is formed with clutch teeth or extensions 58* and a sliding clutch 62 is keyed upon the adjacent end ofithe shaft 56 and can be moved into and out of engagement with the clutch teeth 58 by means of a suitable handlever 63. When the clutch is thrown into engagement the power of'the motor is transei mitted through the several gears and shafts described to the driving sprocket wheel 30 at the rear end of the conveyer, the ower transmitted being determined by the friction clutch 52 which can be adjusted to limit the powertransmitted.

The following devices are provided to swing the conveyer toward the right or left At its rear end this to feed the flights to the material to be loaded. 64 and 65are winding drums loosely mounted on a transverse shaft 66 carried in suitable bearings on the under. side of the conveyer frame. -These drums are formed on their inner Sides with clutchiteeth 64 s ifting the clutches 67 and 68and tlrese 1 5e BEST AVAILABLE COP levers are connected to a transverse shifting bar 71 so that the clutches can be simultaneously operated to'engage one and disengage the other. The shifting bar 71 is formed witha locking lug 71 arranged to cooperate with a notched plate 72 carried by the conveyer frame, the bar 71 being pressed into engagement with said plate . by'spring 73, 73 on the levers 69 and 70. The arrangement is such that the clutches can be set in either of three positions, that 1s, with both through'the following connections. 79 is an eccentric disk sleeved upon the shaft 56 and arranged to be driven therefrom through a friction clutch 80 which can beadjusted to transmit more or lesspower as may be desired. part 81 to engage the eccentric 79 and is connected at its lower end to a cross head 82 which is supported by guides-88 on the conveyer frame. This cross head is connected by means of link bars 84, 84 with the swinging arms 76, 77 which carry the driving pawl 75 (so that the reciprocation of the cross .head "82'reS11lting from the rotation of the shaft 5 56 causes the oscillation of the pawl 75 and 8 '-.,a consequent intermittent movement of the ratchet wheel.

To vary the speed of rotation of the ratchet wheel, and consequently of the winding drums 64 and 65, independently of the speed of rotation of the motor, I provide in connection with the ratchet wheel a segmental guard plate 85 which overlies the teeth of the ratchet wheel for the portion of its circumferen e adjacent the range of movement of the. driving pawl, and which is carried on an arm 86 swiveled on the shaft 56. The arm 86 carries a segmental gear 87 I which meshes with a gear 88 on a transverse shaft 89. This shaft is provided at each end with a handle 90, so that the shaft 89 can be turned to set the guardplate 85 in different positions such that the driving pawl 75 will ride idly upon the guard plate during more or less of its oscillatory movement. The ratchet wheel 74 is held against retrograde movement by a spring-pressed pawl 91. Mounted upon the drums 64 and 65 are cables 92 and 93. These cables pass forward .and around guide sheaves 9e and 95 on the under side of the conveyer frame from which they can be extended the one 81 -is a pitman having a strapv toward the left and the other toward the right and made fast to ,an anchor, jack or the like. When one of the cables is thus arranged and connected it is clear that the roation of its winding drum will cause the swinging of the conveyer frame toward the anchor or jack to which the cableis secured. To facilitate the handling of the machine when-it is being changed from the operative position shown in Fig. 1 to the position shown in Fig. 3, or vice versa, I mount on each end of the transverse shaft 66 a nigger head 96 and these nigger heads extend from either side of the conveyer frame so that a rope can readily be iven several turns around them. In substantial alinement with these nigger heads are idler sheaves 97, 97 mounted on a transverse bar 98 on the front end of the supporting truck and also two pairs of idler sheaves 99 mounted upon the lateralextensions of the arm 12 which supports the conveyer frame.

When the machine is to be changed from the inoperative position shown in Fig. 3 to I a the operative position shown in-Fig. 1,-a

rope 100 can have one end secured as by a hook 101 to the transverse bar 98 of the truck and can then be passed rearward around the inner idler 99, thence forward and around the idler 97, thence rearward and around the outer idler 99, thence forward and one or more times around the nigger head 96.

This arrangement of the rope is indicated in dotted lines in Fig. 1, and is shown somewhat diagrammatically in Fig. 2. The machine runner by pulling upon the free end of the rope 100 can cause the rotation of the nigger head 96 to draw the idlers 99 toward the idler 97 which results in swinging the upright arms 11, 11 of the supporting bracketlO from their inclined position shown in Fig. 3 to the position shown in Fig. 1. During this movement the conveyer frame is moved forward off the transverse supporting bar 44; allowing the front end of the conveyer to be lowered to the ground while the rear delivery end is lifted from the ,po-

sition shown in Fig. 3 to that shown in" 1%: is desirable before effecting this change in the position of the machine to lower the truck extension so that its wheels 6 rest upon the track rails, as this can be done more readily when the machine is-in the position shown in Fig. 3 than after it has been moved to the position shown in Fig. 1. Ordinarily, too, during this operation the clutch 62 will be disengaged so that the conveyer flights will not .be driven. When the parts have been moved to the positions shown in Fig. 1 it will be seen that the rear end of the conveyer is supported by the bracket 10, which in turn is carried by the truck extension. Thus the weight of the rear part of the conveyer is transmitted to the track rails through. the two rear wheels of thetruck land the wheels 6, 6 of the truck extension.

When the machine is to be changed from its operative position, as shown in Fig. l, to a position shown in Fig. 3 for transportation, the rope 100 can be hooked to an extension 102 on the uprights 3 of the truck extension, and the rope given a suitable number of turns around the adjacent nigger head 96, as shown in Fig. 4. Then when the operator pulls upon the rope the rotation of the nigger head causes the rope to draw the "upper end of the arm 3 of the truck extension toward the nigger head. And this results in swinging the truck extension upward off the track so that the hook 7 can be thrown over into locking engagement with the bar 8, and simultaneously forces the conveyer frame rearward relative to the truck, the upright arms 11, 11 swinging rearward to lower the rear endof the conve'yer while the front end of the conveyer rides upright on the front truck support 4A. Obviously in changing the machine from the operative to the inoperative position, or vice versa, the object will be accomplished most readily by havingtwo ropes, one on either side of the machine, so that the lifting force will be applied to both sides of the machine simultaneously.

To enable the machine to be coupled to a locomotive an elongated coupling bar 103 can be, connected to the front end of the.

truck, as shown in Figs. 3 and 6.

The manner of handling and operating the machine Will be readily understood from the foregoin description. Inasmuch as the operation 0 the machine when used for loading coal in mines will be essentially the same as when loading other materials, a description ofthe machine when used in a mine will suffice.

Assuming, for example, that the mine is one worked on the room and pillar plan, the'machine,arranged as shown in Fig. 3, will be drawn on the. mine truck through the entries into a room where the face of the coal has been undercut and the coal broken down. Mine entries are often narrow and the track curves in passing from main entry to branch entry andfrom entry into a room i proved loader, while 0 sharp, but-my imconsiderable length is able to pass through these entries and around relatively sharp curves becausethe elongated conveyer frame is free to swing entrance are necessarily laterally upon the two supports 12 and 44 and about the axis of the pivotal connection at the rear or discharge end of' the conveyen If the mine room narrow the entering track can be arrangedjn the middle of the room so that whenthe machine, has been moved up to the mass of broken coalit can be swung both to the right and to the left and so cover a relatively wide range. With the machine standing in the, room in the position shown in Fig. 3 the machine runnersfirst lower the truck extension to the track, then apply the ropes 100, as indicated in Fig. 4, to move the machine, in the man-- the winding drum 64 causing the latter to wind up the cable 92 and draw the front end in Fig. 1, is then run into the position of the conveyer to the left, the said conveyer being free to swing upon the pivotal support at its rear end. During this movement the winding drum 65 is free to turn on the shaft 68 so that the cable 93 willbe paid out as-the machine swings.

As the conveyer flights move forward and around the front section or nose of the conveyer they are forced edgewise under the coal and drag it along upon themselves into and up the inclined trough of the conveyer frame to the rear endthereof where it falls.

or is knocked from the flights as they swing around the driving sprocket. Inasmuch as the frictional drag of the flights on the ground is greateras they move along the v left or advance side of the front section or nose of the machine than as they move along the right or rear side of the machine, the flights in the former case being loaded with the coal while in the latter case they are not, there is a constant tendency to draw the machine endwise toward the coal and it is thus held automatically up to the work.

When the machine has swung as far as possible, or as far as desired, toward the left, the motor is reversed so as to reverse the direction of travel of the conveyer flights and the clutch 67 is disengaged and the clutch 68.engaged to cause the right cable 93 to be wound upon the drum 65 and the machine to be swung toward the right. Thus the machine can be swung alternately to the left and to the right until the coal has" flights through the friction clutch 52 which can be operated independently of the travcan be adjusted to give way under any desiredload so that the conveyer parts are protected from breakage. Furthermore, the power which is transmitted from the motor to the Winding drums to cause the advance movement or feeding of the machine is transmitted through an independent friction clutch 80 which can be adjusted to give way to any desired load which may be, and

preferably will be, relatively less than that at which the clutch 52 is set to give way. Thus, if the load encounters abnormal re sistance, the forward feed of the machine will first stop, due to the slippage of the clutch 80, while the conveyer will continue to run, thus tending to clear away the abnormal obstruction to the advance of the machine. At any time the rate of feed of the machine can be varied by adjusting the handle 90 to vary the effective throw of the driving pawl 75.

By throwing the clutch 62 out of engagement it is obvious that the winding drums eling conveyer for the purpose of swinging the machine or moving it bodily under its own power.

When all of the broken coal in the room has been loaded and it is desired to move the machine to some other part of the mine the machine runners apply the ropes 100 in the manner shown in Fig. 4 and restore the machine to the inoperative position shown in Fig. 3, in the manner previously described.

The machine can then be run over the mine tracks to any desired place for further use.

It will be understood that when the machine is employed in a mine where the vein is thin so that the head room is very restricted, the arms 11, 11 will be pivotally connected to the truck extension at the lowermost set of pivot holes 13, as shown in Figs. 1 and 3. On the other hand, if there is ample head room the lower ends of the bars 11 can be connected to the truck extension in the middle set of holes 13. This latter arrangement, of course, gives the loader a higher point of delivery and permits the use of higher cars. A further adjustment of the arm 10 is afforded by the screws 15 which can be used in conjunction with main adjustment given by the series of holes 13 to secure the desired inclination of mine floor regardless of the raising and lowthe arm 10. Thus when the bars 11 are adjusted to their higher position it will ordinarily be found "desirable to turn the screws 15 to lift the triangular part 12 of the arm 10 to a greater inclination to the horizontal in order to better conform with the general lines of inclination of the conveyer frame. This vertical adjustment of the rear end of the conveyer does not interfere with the proper working of the flights at the front end of the conveyer because the front end of the conveyer frame is pivotally connected to the main part and is, therefore, free to follow the surface of the ground or ering of the rear end of the conveyer within the limits of the adjustment provided.

While the operative parts of the mechanism are shown as combined with or supported upon a wheeled truck, and, too, a truck which is fitted to track rails, it will be seen that as concerns a number of matters incident to the mechanism there can be modification in this respect; for that part which I refer to as the truck is essentially a supporting structure having parts adapted to carry and hold the conveyer mechanism under one relationship of parts when it is moving to and is sustained in the working position, and in another relationship of .parts when it is moving to and supported moving toward or from the position of normal operation the centers of gravity of the differing parts, aswell as the main center, can be so shifted that it will assist in giving firm support to the adjustable part of the mechanism, which, it will be understood, is exceedingly heavy. By throwing it longitudinally rearward when bringing it into position for transportation, the center of gravity can be brought over the vehicle or truck so that it will rest thereon with steadiness.

I am aware of the fact that portable ele- 'vators having their front ends arranged to be shiftable laterally during the time that they are taking on the load at the front end have had their rear end portions sup--- ported upon trucks. But I am not aware that anyone has ever designed the relationship of parts which I have produced in apparatus of this class. Heretofore the custom has been to have one truck for the front end portion of the conveying apparatus or elevating mechanism and another separate truck for the rear portion. The total wheel basein such an apparatus is so elongated thatiitis impracticable to follow this principle of construction in making apparatus to run on the tracks in storage yards, in mines or in some other places where curves are necessarily of short radius. The dificulties are obviated with a mechanism such as I have herein shown, as the wheel base is actually shortenedwhen the apparatus is being transported from place to place either around the sharp curves or along straight track; and in turn, this base is lengthened when the several parts of the mechanism are to be put in the positions they occupy when at work. The truck element, as will be seen, is in two sections, one of which.1s constantly-bearing and the other intermit tingly bearing downward upon or toward the ground. The intermittingly working section is so disposed that it extends the wheel base or supporting base farther under or toward the main pivot of the conveyer mechanism, so that the latter can be firmly supported at its discharge end at ground points well outside of the center ofgravity, while the forward end can be shifted laterally for the purpose of sweeping through a wide are for picking up load material, it moving laterally across the longitudinal vertical planes of the truck element freely and without obstruction therefrom, the gfront end of the apparatus, as above described, at such times receiving its vertical support independently'of the truck What I claim is:

1. In a loader, the combination of a support, a bracket arm thereon adapted to overhang a car that is placed adjacent the, support, and a conveyer having its discharge end pivoted on the overhanging part of the bracket and its receiving end adapted to swing laterally. v

2.. In a loader, the combination of a truck, a rearward extension on the-truck adapted to move downward and receive support from' the floor, a bracket arm mounted on said truck extension adapted to overhanga car positioned adjacent the truck, and a conveyer having its discharge end pivoted on the overhanging part of the bracket arm and its receiving end adapted to swing latorally.

3.. In a loader, the combination of a movable support, an adjustable bracket extend- ;ing from said support, an elongated conveyer having its discharge end pivotally mounted upon the outer end of the bracket and its receiving end arranged to rest in operative position u on theground, said bracket being adapts when in one-position of adjustment corresponding to the opera tive position of the conveyer .to receive at its outer end the weight of the conveyer and whenin another position of adjustment corresponding to the inoperative position of the conveyer to receive said-weight at a point nearer its supported end, and means on the said support forming an additional point of support for the conveyer-when the bracket is in its last named position of adjustment ground, said bracket being adapted when in one position of adjustment corresponding to the operative position of the conveyer to receive at its outer end the weight of the swinging conveyer and when in another position of adjustment corresponding to the inoperative osition of the conveyer to receive said weig t at its joint, and means on the said support forming an additional point of support for the conveyerwhen the bracket is in its last named position of adjustment and the receiving end of the conveyer. is raised from the ground. 1

5. In a loader, the combination of a 'movable support, a' vertically swinging'eXtension carried by said support and adapted to be raised from and lowered to the ground, an adjustable bracket mounted on said extension, an elongated conveyer havingits discharge end pivotally mounted on the outer end of said bracket and its receiving end arranged to rest in operative position upon the ground, said bracket being adapted when in one osition of vadjustment corresponding to t e operative position of the conveyer to receive at its outer end the weight of the conveyer and when in another position of adjustment corresponding to the inoperative position of the conveyer to receive said weight at a point nearer its sup ported end, and means on the said support forming an additional point of support. for the conveyer when the bracket is m its last named position of adjustment and the receiving end of the conveyer is raised from the ground.

6. In a loader, the combination of a movable'support, a vertically adjustable extension on said support adapted to be moved downward to and upward from the ground,

an adjustable bracket pivotal-1y mounted on said extension and having a joint between otall mounted on the outer end of the brac et. and its receiving end arranged to restin operative position upon the ground,

said'bracket being adapted when in one position of adjustment corresponding to the veyer and in another position'of adjust ment corresponding to the inoperative position of the conveyer to receive said weight at its joint, and means on the said support forming an additional point of support for the conveyer when the bracket is in its last mentioned position of adjustment and the receiving end of the conveyer is raised from the ground.

7. In a loader, the combination of a movable support, an adjustable bracket extending from said support, an elongated conveyer having its discharge end pivotally supported upon the outer end of the 'bracket and its receiving end arranged to rest in operative position upon the ground, said bracket being adapted when in one position of adjustment corresponding to the opperative position of the conveyer to receive at its outer end the weightof the conveyer and when in another position of adjustment corresponding to the inoperative position of the conveyer to receive said weight at a point nearer its supported end, means on the said support forming an additional point of support for the conveyerwhen the bracket is in its last named position of adjustment and the receiving end of the conveyer is raised from the ground, and power devices for effecting the adjustment of the bracket.

8. In a loader, the combination of a support, a bracket arm mounted on the support and projecting therefrom so as to overhang a car positioned adjacent the support, an

elongated conveyer having its discharge end a projecting bracket arm thereon adapted.

to overhang a car positioned adjacent the truck, an elongated conveyer having its dis charge end pivoted on the overhanging part of the bracket arm and its receiving end movable laterally, and a vertically adjustable support on the truck for the receiving end of the conveyer, the said support being elongated transversely of the conveyer whereby the conveyer is sustained when it is swung laterally. 10. The combination of a support, an elongated conveyer, a vertical pivot connecting the said conveyer to the support at a vertical line outside of the base of the support around which the conveyer swings laterally at its front lower end, means connecting the lower end with a stationary abutment for moving it laterally and power devices mount-. ed on the conveyer, power transmitting means between the power devices and the conveyer, and power transmitting means between the power devices and the means for swinging the forward end of the conveyer laterally. 11. A conveying apparatus having in combination a truck formed in two sections permanently secured together, one section being intennittingly operative as a ground support, an endless conveyer, a conveyer frame resting at one of its ends upon one of the truck sectionsand at its other end supported independently of the truck, when in working position, and supported upon the other truck section when it is in non-working position and is arranged for transportation, bodily.

12. The combination of a two part truck with one part intermittingly andthe other part constantly bearing upon the round, a conveyer mechanism,-a frame t erefor adapted when in one position relative to horizontal planes to bear downward exclusively upon the truck and through the truck to the ground, and to bear downward upon the truck and upon the ground independently of the truck when the conveyer frame is, bodily, inanother position relatively to horizontal planes.

13. In apparatus of the character described, the combination of a truck, an endless conveyer, an elongated frame for said conveyer extending from points in front to points in rear of the truck, means on the truck for pivotally supporting the frame with freedom to swing laterally across the top of the truck said pivotal support being movable forwardly and backwardly in relation to the truck, and the conveyer frame being vibratable vertically in relation to the pivotal support.

14. The combination of a truck, an endless conveyer, an elongated fraine for the conveyer, a pivotal support for the conveyer frame mounted on the truck, said support permitting the conveyer frame to swing lat- 106 erally' with its receiving end on the ground and to vibrate vertically, and means for additionally supporting the conveyer on the truck when the receiving end of the conveyer is raised 0E the ground.

15. The combination of a truck, a bracket arm projectingrearwardly from the truck, an endless conveyer, an elongated frame for the conveyer pivotally supported at the dis charge end 0 the conveyer on the bracket arm with its receiving end free to move laterall upon the ground and to vibrate vertical y, and means on the truck for additionally supporting the conveyer frame when itsreceiving end is raised from the ground.

16. The combination of a-truck having two frame parts pivotally connected on a transverse axis, wheels supporting the frame parts at said axis, additional wheels supporting each frame art at a distance from the said axis,.an en less conveyer, an elongated frame therefor pivotally mounted on one of the frame parts of the truck with its receiving end free to move laterally on the ground and vibrate vertically, and means for suping part of the bracket and its receiving end adapted to swing laterally. 10

In testimony whereof I afiix my signature,

in presence of two witnesses.

NILS D. LEVIN.

Witnesses: 4

DUDLEY T. FISHER, F. C. Cosn.

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