US2303792A - Self-loading device for shaker conveyers - Google Patents

Description

Dec. 1, 1942. 1.. o. HAGENB'OOK SELF-LOADING DEVICE FOR SHAKER CONVEYERS 5 Sheets-Sheet 1 Filed April 24, 1941 I illll LvllllrkLLulllllnl Dec. 1, 1942.

L. o. HAGENBOOK SELF-LOADING DEVICE FOR SHAKER CONVEYERS Filed April 24,- 1941 5 Sheets-Sheet '2 F llihllr Dec. 1942- L. D. HAGENBOOK SELF-LOADING DEVICE FOR SHAKER CONVEYERS Filed April 24, 1941 5 Sheets-Sheet 3 .Z wanfar en bod/L 5 Sheets-Sheet 4 L. D. HAGENBOOK Filed April 24. 1941 SELF-LOADING DEVICE FOR SHAKER CONVEYERS Dec. 1, 1942.

4 L. o HAG'ENBOOK 2,303,792

SELF-LOADING DEVICE FOR SHAKER C(QDNVEYERS Filed April 24, 1941 5 Sheets-Sheet s 4 A 'IIIIIIIII- 'II Patented Dec. 1, 1942 SELF-LOADING DEVICE FOR SHAKER CONVEYERS Loy D. Hagenbook, Chicago, 111., assignor to Goodman Manufacturing Company, Chicago, 111., a corporation of Illinois Application April 24, 1941, Serial No. 390,022

14 Claims.

This invention relates to improvements in selfloading devices for shaker conveyers of the type utilized for picking up and transporting loose material such as coal, rock or the like.

The principal objects of my invention are to provide a novel and efiicient form of mobile selfloading device of the class described including a base with a reciprocating and an extensible trough section connected thereto for lateral swinging movement with respect thereto, together with a simplified form of self-contained power means for laterally swinging the reciprocating and extensible trough sections, for positioning a shovel on the forward end of the extensible trough section, for gathering material from the far corners of a working place.

Other objects of my invention will appear from time to time as the following specification proceeds and with reference to the accompanying drawings wherein:

Figure 1 is a top plan view of a loading device constructed in accordance with my invention, with certain parts of the reciprocating and extensible trough sections broken away in order to show certain details of the supporting frame therefor;

Figure 2 is an enlarged fragmentary plan view of the forward portion of the loading device and showing certain details of the mechanism for extending the shovel and extensible trough section with respect to the reciprocating trough section;

Figure 3 is a view in side elevation of the forward portion of the loading mechanism drawn to substantially the same scale as Figure 2, with certain parts broken away and certain other parts shown in longitudinal section;

Figure 4 is a transverse sectional view taken substantially along line 44 of Figure 2;

Figure 5 is a transverse sectional View taken substantially along line 5-5 of Figure 2;

Figure 6 is a partial fragmentary sectional view taken substantially along line 6-6 of Figures 2;

Figure 7 is a partial fragmentary transverse sectional view taken substantially along line 'I-'I of Figure 2;

Figure 8 is an enlarged detail horizontal sectional view, illustrating certain details of the control linkage for the feeding mechanism for the extensible trough section;

Figure 9 is an enlarged detail plan view of the rear portion of the loading device, with certain parts broken away and certain other parts shown in section in order to illustrate certain details of the geared drive, for swinging the reciprocating and extensible trough sections;

Figure 10 is an enlarged view in side elevation of the rear portion of the loading device, with certain parts broken away and certain other parts shown in longitudinal section, in order to illustrate certain other details of the swinging mechanism not shown in Figure 9;

Figure 11 is a transverse sectional view taken substantially along line I I-II of Figure 9;

Figure 12 is a transverse sectional View taken substantially along line I2-I2 of Figure 9; and

Figure 13 is a transverse sectional view taken substantially along line I3--I3 of Figure 9.

Referring now in particular to the drawings, the embodiment of my invention illustrated therein includes generally an extensible trough section Ill having a shovel II on the forward end thereof, for picking up loose material from the ground. Said extensible trough section is mounted for extensible or retractible movement with respect to a reciprocating trough section I2, and said reciprocating and extensible trough sections are reciprocably supported and guided in an elongated frame I3, pivotally connected at its rear end to a base I4, for movement about the vertical axis of a bearing boss I5. Said base is adapted to be held from movement with respect to the ground during the loading operation, by means of suitable jacks or the like (not shown).

The elongated frame I3, as herein shown, extends along opposite sides of the reciprocating trough section I2 and the extensible trough section I I and is provided with laterally spaced upright bearing members I6, I6 having bearing engagement with opposite sides of said extensible trough section, for laterally swinging said extensible trough section, upon lateral swinging movement of said frame. Said frame is mounted for transverse movement along the ground at its forward end on a plurality of laterally spaced rollers [1, Il, journaled in a rectangular frame I8, for movement about parallel axes extending lzongitudinally of said frame (see Figures 1 and The rectangular frame I8 forms a supporting means for the forward end of the elongated frame I3, through a pair of laterally spaced arms I9, I9, pivotally connected to opposite sides of said rectangular frame for movement about transverse axes, and extending rearwardly from said frame. Said lever arms have connection at their opposite ends with a shaft 20, pivotally mounted in said elongated frame at its ends. Lever arms 2|, 2| project upwardly iro m said shaft and are secured thereto. Said lever arms are adapted to abut a stop 22, threaded on a vertically extending bolt 23, mounted in said elongated frame (see Figure 3). Adjustment of said stop along said bolt serves to elevate or lower said elongated frame with respect to said rollers. The construction just described enables the rollers I11, I! to follow an uneven mine bottom, but the lever arms 2i, 2i and stops 22, 22 limit downward movement of said elongated frame with respect to said rectangular frame and form a support for the forward end of said frame on said rollers.

The means for feeding the extensible trough section It) with respect to the reciprocating trough section l2 includes a pair of laterally spaced carrier members 25, 25 having grip blocks 25 and 2'! pivotally mounted therein and adapted to engage the upper and lower sides of bearing plates 23, 29, extending along and projecting laterally from the upper flanges of said extensible trough section. Said grip blocks are engaged with or disengaged from said bearing plates in a manner somewhat similar to that disclosed in an application Serial No. 371,553, filed by me on Dec. 24, 1940, so will only herein be described insofar as is necessary to make my present invention readily understandable.

The bearing plates 29, 29 are slidably mounted between pairs of vertically spaced flanged rollers 38, 35, mounted in upright brackets 3|, 3! on opposite sides of the reciprocating trough section l2 and herein shown as being formed integral with a U-shaped frame 32, secured to the forward end of the reciprocating trough section l2 and extending upwardly along opposite sides thereof (see Figures 2 and 3).

The reciprocating trough section [2 is reciprocably mounted on the elongated frame i3, for reciprocable movement with respect thereto on rollers 33, 33, mounted in bracket members 34, 34, disposed adjacent the forward end of said reciprocating trough section (see Figure 6). Said rollers are rotatable about vertical axes and have substantially V-shaped engaging faces adapted to engage V-shaped laterally spaced longitudinally extending supporting guide tracks, formed by angles 35, 35, which are mounted on bracket members 36, 35, secured to and projecting outwardly and upwardly from the elongated frame l3, to form a support for the forward end of said reciprocating trough section.

A floating frame forms a support for the carrier members 25, 25 and the operating mechanism therefor and is pivotally connected to opposite sides of the U-frame 32, in bracket members 40, 45, by means of pivotal pins 4!, 4|. Said frame extends forwardly from said U-frame along opposite sides of the extensible trough section. The forward portion of said frame includes upright sides 43, 43 extending upwardly along opposite sides of said extensible trough section and a cross member 42 extending beneath said trough section and connecting said upright sides together. Said upright sides have vertically spaced flanged rollers 44, 44 mounted therein, for rotation about parallel spaced transverse axes. Said flanged rollers are adapted to engage the upper and lower sides of the bearing plates 29, 29, to slidably support said extensible trough section and to prevent vertical displacement thereof.

The carrier members 25, 215 and their operation and connection to said floating frame are each the same so one only need herein be described in detail.

The carrier member 25 is connected to the pivoted frame 39 by means of a link 45, herein shown as being threaded within an eyebolt 46, pivotally connected to the upper end of said carrier member. Said link extends rearwardly from the upper end of said carrier member in a downwardly inclined direction and has a bifurcated lower end provided with longitudinally extending slots 41, 41 formed in the furcations thereof. Said slots slidably engage spaced blocks 48, 48, pivotally mounted on the outer end of a transverse shaft 49, which extends transversely across said floating frame and which is journaled therein.

A yieldable link 53 is pivotally connected to the lower end of said carrier member and extends rearwardly therefrom. Said link includes a bifurcated rear portion 54 having longitudinally extending slots 55, 55 formed in the furcations thereof. Spaced blocks 56, 56 have engagement with said slots and form a slidable supporting guide for said link. Said blocks are pivotally mounted on the outer end of a transverse shaft 51, journaled in opposite sides of said floating frame.

The carrier member 25 is urged in a gripping position by means of a spring-pressed plunger 59 having pivotal connection with said carrier member at its upper end and slidably mounted in the bracket formed by the vertical side 43 of the U-shaped forward end of the frame 39 (see Figure 3). A spring-pressed plunger 59 is pivotally connected to the lower end of said carrier member and is slidably mounted in the lower end of the upright side 43. Said plunger is arranged to urge the lower end of said carrier member towards the forward end of the extensible trough section. The springs of said plungers are only strong enough to hold the carrier member in a position so its grip blocks may grip the bearing plate 29 at the beginning of the forward or return stroke of the conveyer, and are not strong enough to cause any gripping action between said grip blocks and bearing plates.

When the links 45 and 53 are slidably movable with respect to the respective blocks 48 and 56, the grip blocks 25 and 21 will exert no gripping action on the bearing plates 29, 23 of the extensible trough section, but when the link 45 is held from movement with respect to its respective block 48, and the link 53 is slidable with respect to its respective blocks 56, said link 45 will exert a pulling action on the upper end of said carrier member during the return stroke of the conveyer, to grip said grip blocks with said bearing plates and to move said extensible trough section rearwardly along said reciprocating trough section. Upon the forward stroke of the conveyer said link will exert a pushing force on the upper end of said carrier member, to release said grip blocks from said bearing plates.

A cam 63, mounted on the transverse shaft 49, and adapted to engage a roller 64, mounted on the link 45, is provided to hold the link 45 from slidable movement with respect to the block 48.

In a like manner, when the link 53 is held from movement with respect to the block 56 and the link 45 is slidably movable with respect to the block 48, said link 53 will exert a pushing force on the lower end of the carrier member 25 during the forward stroke of the conveyer, to move the extensible trough section with the reciprocating trough section, and will exert a pulling force against the lower end of said carrier member, to release said grip blocks from said bearing 69 mounted on said transverse shaft on the right hand end thereof, when looking towards the front of the machine. Said sector depends from said 'shaft and is connected with a lever arm 70 depending from a hollow transverse shaft 1!, by means of a yieldable link 12. Said hollow transverse shaft is journaled at its ends in the side frame members of the pivoted frame 39 (see Figures 2, 3 and 7). Hand levers l3, 13 are provided on opposite ends of said shaft to pivot said shaft and lever arm and to move said cams to an engaged or disengaged position with respect to said rollers. A spring 14 is connected between the frame 39 and the sector 69, to hold said sector and the cams 63 in a locked position with respect to the rollers 64.

The cams 65 are moved into locking engagement with the roller 66 by means of a sector I mounted on the transverse shaft 51 on the left hand side thereof, when looking towards the front of the machine. A yieldable link 13 connects said sector with a hand lever 71, which is mounted on the outer end of a shaft 19. Said shaft extends through the hollow shaft H and is pivotally movable with respect thereto. A hand lever Ila is provided on the opposite end of said shaft, to permit operation of said cam from opposite sides of the machine. A spring 8|] is connected between the frame 39 and sector 15, to

hold the cam'65 in looking engagement with respect to the roller 66.

Thus when the hand is removed from either of the hand levers l3, l3 and H, Ha, the extensible trough section In will be reciprocably moved with the reciprocating trough section l2 by means of the grip blocks 25, 26 and 21, 2'! and when either of the hand levers l3, 13 are moved in a clockwise direction, to disengage the cams B3, 63 from the rollers 64, 65 the link 53 will engage the grip blocks 26 and 21 with the bearing plates 29, 29 upon the forward stroke of the conveyer and will release said grip blocks from said bearing plates upon the return stroke of the conveyer, to extend said extensible trough section from said reciprocating trough section. The instant the hand is released from either of said hand levers, the spring 14 will again move the earns 63, 63 into locking engagement with the rollers 64, 64, to cause the two trough sections to reciprocate together.

When either of the hand levers T! or 11a is moved in a clockwise direction and the hand is removed from both of the hand levers 13, the cams 65, 65 will be released from the rollers 66, 66. This will permit the links 53, 53 to slidably move along the blocks 56, 56. The links 45, 45 will thus exert a force on the upper end of the carrier member 25, to engage the grip blocks 26 and 27 with the bearing plates 29, upon the return stroke of the conveyer and will exert a pushing force against the upper end of said carrier member upon the forward stroke of the conveyer, to reretract the extensible trough section with respect to the reciprocating trough section.

A pair of auxiliary holding grip blocks l8, 18 are provided on each side of the extensible trough section [0, to hold the extensible trough section from backward slipping movement, when the conveyer is operating upwardly along a, grade. Each of said grip blocks is mounted in a carrier member 8|, connected to a bracket member 82 by means of yieldable links 83 and 83a: Said bracket member is connected to box-like supporting members 34, 94 at its opposite sides, which are slidably mounted on longitudinally extending rods 84a, 84a, spaced upwardly from opposite sides of the floating frame 39 and mounted at their ends in brackets 84b, 84b, projecting upwardly from opposite sides of said floating frame. Said bracket member is held from reciprocable movement with the conveyer by means of two pairs of laterally spaced engaging members 85, 85 projecting upwardly from opposite sides of the frame I3 and adapted to engage opposite sides of a cross frame member 85a of said bracket.

A hand lever 86 is secured to the upper side of each carrier member BI and projects outwardly and rearwardly therefrom, for moving said carrier member and the grip blocks 18, 78 to a griplease said grip blocks from said bearing plates, to

ping position with respect to the bearing plates 29, 29. As soon as pressure is released from said hand lever, said grip blocks will be released from said bearing plates.

The mechanism for reciprocably driving the reciprocating and extensible trough sections is indicated generally byreference character 87 and is mounted on the base M, adjacent the rear end thereof. A motor 88 is provided to drive said drive mechanism. Said drive mechanism may be of any well'known construction, but is herein shown as being of a construction similar to that disclosed by Patent No. 1,908,087 which issued to R. A. Walter on May 9, 1933, so will not herein be shown or described in detaiL- Said drive mechanism includes a cross head 89 reciprocably driven in a guide 99, extending longitudinally of the base 14. Said cross head is reciprocated by means of a cross link 9| having pivotal connection with said cross head, intermediate its ends. Said link is reciprocably driven by means of crank pins 92, 92 depending from the lower sides of spur gears 93, 93 and engaging slots 93a, 93a'extending along said link.

A drive member 99 is mounted on and projects upwardly from the cross head 89 and is guided in a longitudinal slot formed in a central portion 94 of a casing 95, for the drive mechanism. Said drive member extends between connecting members 96, 96 depending from a trough section 91, and is pivotally connected with said connecting members, by means of a pivotal pin 98. The trough section 97 is connected With the reciprocating trough section l2, for reciprocably driving said trough section, by means of an intermediate laterally swingable connecting trough section W9. Said intermediate trough section has arcuately formed laterally flared forward and rear ends which conform to the form of the forward end of the trough section 91, and to the form of the rear end of the trough section l2.

The trough section 91 is reciprocably supported on the base it on a pair of laterally spaced rollers till, Nil, rotatable about vertical axes and mounted on brackets I92, I02, secured to and projecting laterally from. opposite sides of said trough section. gaging surfaces which engage V-shaped guide Said rollers have vshaped en tracks I03, I03. Said guide tracks are mounted on the base it by means of brackets I04, I04.

A reinforcing plate I05 extends across the bottom of the forward end of the trough section 91 and has a slot I36 extending longitudinally of the central portion of said trough section. A pin I81, secured to and depending from the rear end of the intermediate connecting trough section Illii, is adapted to have guiding engagement with said slot, for guiding said intermediate trough section upon lateral swinging movement thereof. The outwardly flared rear portion of the trough section I2 has pivotal connection with the intermediate connecting trough section Ifill by means of a bearing boss I38, depending from said reciprocating trough section and having said connecting trough section pivotally mounted thereon. Said bearing boss is mounted at its lower end on a transversely extending bracket I69 having supporting rollers IIII, I Ill mounted on opposite sides thereof, for rotation about vertical axes. Said rollers engage and are supported by guide tracks H2, H2 mounted on brackets II3, I I3, projecting upwardly and laterally from opposite sides of the elongated frame I3.

The means for laterally swinging the elongated frame I3 and the trough sections I and I2, as herein shown, includes a gear sector H5, journaled on the bearing boss I5 and having the rear end of said elongated frame pivotally connected thereto on laterally spaced upwardly projecting support members H3, IIS by means of pivotal pins II1, I51. An idler gear H50, meshes with said gear sector. A spur pinion I I8 on the lower end of a vertical shaft IIS, meshes with said idler gear. The vertical shaft II!) is suitably journaled within a gear housing I and is selectively driven from a worm gear I2I, disposed coaxially of said shaft.

A winding drum I23 is freely mounted on the lower end of said shaft and is journaled on its hub in the lower end of said gear housing and forms a means for moving the base I4 and the reciprocating and extensible trough sections about the mine, to position the shovel I I for load- Suitable clutch means are provided for selectively connecting the worm gear I2I with either the vertical shaft I I9, for driving the pinion H8, or the winding drum I23, which are herein shown as being of an ordinary jaw type of clutch including a clutch sleeve I24 freely mounted on said shaft and rotatably driven by said worm gear. Clutch jaws I25, I25 are provided at the upper end of said sleeve, for engaging clutch jaws I25, depending from a member I21, keyed on the upper end of said shaft, for driving said shaft. Clutch jaws I29 depend from said sleeve and are adapted to engage clutch jaws I30 on the upper side of the winding drum I23, for driving said drum.

The clutch sleeve I24 is moved along the shaft H9 by means of a clutch collar I3I, engaged by a clutch yoke l32. Said yoke is mounted on a rock shaft I33, which is rocked or held in a fixed position by means of a suitable system of levers which are not herein shown or described in detail since they are no part of my present invention.

The worm gear I2;I is driven from a worm I35, which is mounted on a longitudinally extending shaft l36. A pair of spur gears I31 and I38 are freely mounted on said shaft and are selectively connectible therewith by means of a clutch collar I39, herein shown as being of the jaw clutch type,

for driving said shaft in reverse directions without reversal of the motor 88. The spur gear I31 is meshed with a spur pinion I40 on 'a longitudinally extending shaft MI. The spur gear I38 is meshed with an idler gear I42, which idler gear in turn is driven from a spur pinion I43 keyed on the shaft MI. A worm and worm gear drive generally indicated by reference character I is provided to drive said shaft from the motor 83. The elongated frame I3 and shovel II may thus be laterally swung about the axis of the bearing boss I5 on the rollers I1, I1 in opposite directions without reversal of the motor 88, for positioning said shovel to gather fromthe extreme corners of a working place.

While I have herein shown and described one form in which my invention may be embodied, it will be understood that the construction thereof and the arrangement of the various parts may be altered without departing from the spirit and scope thereof. Furthermore, I do not wish to be construed as limiting my invention to the specific embodiment illustrated, excepting as it may be limited in the appended claims.

I claim as my invention:

1. In an apparatus of the class described, a base, a reciprocating trough section, an extensible trough section extensible from or retractible within said reciprocating trough section, a shovel On the forward end of said extensible trough section, a gear mounted on said base for rotation about a vertical axis, power means for rotatably driving said gear, and means for connecting said reciprocating and extensible trough sections with said gear and for laterally swinging said trough sections upon pivotal movement of said gear including a frame extending forwardly of said base along said reciprocating and extensible trough sections and having said reciprocating and extensible trough sections mounted for reciprocable movement therealong and having bearing engagement with opposite sides of said extensible trough section, and a floating connection between the rear end of said frame and said gear to permit the forward end of said frame to engage and conform to an uneven floor while being moved thereacross by said gear.

2. In an appparatus of the class described, a base, a reciprocably driven trough section, an extensible trough section extensible from or retractible within said reciprocably driven trough section, a shovel on the forward end of said extensible trough section, a gear mounted on said base for rotation about a vertical axis, power means for rotatably driving said gear, and means for connecting said reciprocating and extensible trough sections with said gear and for laterally swinging said trough sections upon pivotal movement of said gear including a frame extending forwardly of said base and forming a support for said reciprocating and extensible trough sections and having bearing engagement with opposite sides of said extensible trough section, said frame being mounted for slidable movement along the ground at its forward end, in advance of said base, and having transverse pivotal connection with said gear.

3. In a self-loading device for shaker conveyers, a base, a swiveled trough section mounted on said base for lateral swinging movement with respect thereto, a reciprocating trough section mounted on the end of said swiveled trough section, an extensible trough section telescopically movable with respect to said reciprocating trough section, and means for laterally swinging said reciprocating and extensible trough sections ineluding a frame pivotally connected to said base and extending along said reciprocating trough section and having said reciprocating and extensible trough sections slidably mounted thereon and having slidable engagement with opposite sides of said extensible trough section, a motor mounted on said base, and a geared drive connection between said motor and said frame for laterally moving said frame and said reciprocating and extensible trough sections about the point of pivotal connection of said frame to said base.

' 4. In a self-loading device for shaker conveyers, a base, a swiveled trough section mounted on said base for lateral swinging movement with respect thereto, a reciprocating trough section mounted on the end of said swiveled trough section and an extensible trough section telescopically movable with respect to said reciprocating trough section, and means for laterally swinging said reciprocating and extensible trough sections including a frame pivotally connected to said base and extending along said reciprocating trough section and having said reciprocating and extensible trough sections slidably mounted thereon and having slidable engagement with opposite sides of said extensible trough section, a motor mounted on said base, and a geared drive connection between said motor and said frame for laterally moving said frame and said reciprocating and extensible trough sections about the point of pivotal connection of said frame to said base including an arcuate rack and a pinion meshing with said rack.

5. In a self-loading device for shaker conveyers,

a base, a shaker conveyer operating mechanism mounted on said base, a motor for driving said operating mechanism, a trough section mounted on said base and reciprocably driven by said shaker conveyer operating mechanism, an extensible trough section extensible from or retractible within said trough section, a shovel on the forward end of saidv extensible trough section, a mounting for said trough sections, for swinging said trough sections laterally with respect to said base including an elongated frame having slidable engagement with the ground at its forward end and being slidably engaged by opposite sides or said extensible trough section, and a connection between said frame and saidbase for swinging said frame laterally with respect to said base including a gear mounted on said base for rotation about a vertical axis and a floating connection between-the rear end of said frame and said gear.

6. In a self -loading device for shaker conveyors, a base, a shaker conveyer operating mechanism mounted on said base, a motor for driving said operating mechanism, a trough section mounted on said base and reciprocably driven by said shaker conveyer operating mechanism, an extensible trough section extensible from or retractible within said trough section, a shovel on the forward end of said extensible trough section, a mounting for said trough sections, for swinging said trough sections laterally with respect to said base including an elongated frame, a gear mounted on said base for rotation about a vertical axis, a drive connection from said motor to said gear, and a transverse pivotal connection between the rear end of said frame and said gear, for swinging said frame and shovel laterally with respect to said base upon pivotal movement of said gear.

7. In a self-loading device for shaker conveyers,

a base, shaker conveyer operating mechanism mounted on said base, a motor for driving said operating mechanism, a trough section mounted on said base and reciprocably driven by said operating mechanism, a frame connected to said base, adjacent its rear end, and having slidable engagement with the ground at its forward end for lateral movement with respect to said base, a reciprocating trough section mounted on said frame, a swiveled trough section connecting said trough sections together to form a continuous trough between said trough sections, and means self-contained on said base for swinging said frame laterally by power including geared driving means having operative connection with said frame.

8. In a self-loading device for shaker conveyers, a base, shaker conveyer operating mechanism mounted on said base, a motor for driving said operating mechanism, a trough section mounted on said base and reciprocably driven by said operating mechanism, a frame connected to said base, adjacent its rear end, and having slidable engagement with the ground at its forward end for lateral movement with respect to said base, a reciprocating trough section mounted on said frame, a swiveled trough section connecting said trough sections together, to form a continuous trough between said trough sections, and means self-contained on said base for swinging said frame laterally by power including a spur gear forming a support for the rear end of said frame, and a geared drive connection from said motor to said gear, for laterally moving said frame.

9. In a self-loading device for shaker conveyers, a base, shaker conveyer operating mechanism mounted on said base, amotor for driving said operating mechanism, a trough section mounted on said base and reciprocably driven by said operating mechanism, a frame connected to said base, adjacent its rear end, and having slidable engagement with the ground at its forward end for lateral swinging movement with respect to said base, a reciprocating trough section mounted on said frame, a swiveled trough section connecting said trough sections together, to form a continuous trough between said trough sections, and means self-contained on said base and driven by said motor for swinging said fram laterally by power in opposite directions while said motor is rotating in one direction including a spur gear, a floating connection between the rear end of said frame and said gear permitting said frame to slidably move along an uneven floor, and reverse gearing connecting said motor to said spur gear.

10. In a self-loading device for shaker conveyers, a base, shaker conveyer operating mechanism mounted on said base, a motor for driving said operating mechanism, a trough section mounted on said base and reciprocably driven by said operating mechanism, a frame connected to said base adjacent its rear end, and having slidably engagement with the ground at its forward end for lateral movement with respect to said base, a reciprocating trough section mounted on said frame, a swiveled trough section connecting said trough sections together to form a continuous trough between said trough sections, an extensible trough section mounted for extensible or retractible movement with respect to said reciproeating trough section, means operated by the action of the conveyer, for extending or retracting said extensible trough section with respect to said reciprocating trough section, a slidable connection between opposite sides of said frame and said extensible trough sections, and means selfcontained on said base for laterally moving said frame and reciprocating and. extensibl trough sections, including a gear vertically pivoted on said base and projecting rearwardly from said frame, a floating connection between the rear end of said frame and said gear, and a drive connection from said motor to said gear for swinging said frame and extensible trough section laterally by power.

11. In an apparatus of the class described, a base, a reciprocating trough section, an extensible trough section reciprocably driven by said reciprocating trough section and mounted for extensible or retractible movement with respect thereto, means for extensibly or retractibly moving said extensible trough section with respect to said reciprocating trough section, a frame extending forwardly of said base and having engagement with the ground at its forward end,

means on said frame for supporting said reciprocating and extensible trough sections for reciprocable movement with respect thereto, means on said frame having engagement with opposite sides of said extensible trough section, for laterally swinging said trough sections upon lateral movement of said frame, and self-contained power operated means mounted on said base and having operative connection with said frame, for laterally swinging said frame and reciprocating and extensible trough sections across the forward end of said base.

12. In an apparatus of the class described, a base, a reciprocating trough section, an extensible trough section reciprocably driven by said reciprocating trough section and mounted for extensible or retractible movement with respect thereto, means for extensibly or retractibly moving said extensible trough section with respect to said reciprocating trough section, a frame extending forwardly of said base and having engagement with the ground at its forward end, means on said frame for supporting said reciprocating and extensible trough sections for reciprocable movement with respect thereto, means on said frame having engagement with opposite sides of said extensible trough section, for laterally swinging said trough sections upon lateral movement of said frame, and self-contained power operated means mounted on said base and 1 having connection with said frame, for laterally swinging said frame and reciprocating and extensible trough sections across the forward end of said base including a motor on said base and an interengaging drive connection between said motor and said frame.

13. In an apparatus of the class described, a base, a reciprocating trough section, an extensible trough section reciprocably driven by said reciprocating trough section and mounted for extensible or retractible movement with respect thereto, means for extensibly or retractibly moving said extensible trough section with respect to said reciprocating trough section, a frame extending forwardly of said base and having engagement with the ground at its forward end, means on said frame for supporting said reciprocating and extensible trough sections for reciprocable movement with respect thereto, means on said frame having engagement with opposite sides of said extensible trough section, for laterally swinging said trough sections upon lateral movement of said frame, and self-contained power operated means mounted on said base and having connection with said frame, for laterally swinging said frame and reciprocating and extensible trough sections across the forward end of said base including a motor on said base, a member pivotally mounted on said base for movement about a vertical axis and forming a supporting connection for the rear end of said frame on said base, a transverse pivotal connection between said frame and'said member, permitting said frame to follow an uneven mine bottom during lateral swinging movement of said frame across the forward end of said base, and an operative connection between said motor and said member for pivotally moving said member and said frame about said vertical axis.

14. In an apparatus of the class described, a base, a reciprocating trough section, an extensible trough section reciprocably driven by said reciprocating trough section and mounted for extensible or retractible movement with respect thereto, means for extensibly or retractibly moving said extensible trough section with respect to said reciprocating trough section, a frame extending forwardly of said base and having engagement with the ground at its forward end, means on said frame for supporting said reciprocating and extensible trough sections for reciprocable movement with respect thereto, means on said frame having engagement with opposite sides of said extensible trough section, for laterally swinging said trough sections upon lateral movement of said frame, and self-contained power operated means mounted on said base and having connection with said frame, for laterally swinging said frame and reciprocating and extensible trough sections across the forward end of said base including a motor on said base, a member pivotally mounted on said base for movement about a vertical axis, an interengaging drive connection between said motor and said member for pivotally moving said member about said vertical axis, and a floating connection between the rear end of said frame and said member, permitting said frame to follow an uneven mine bottom while moved across the forward end of said base by said member.

LOY D. HAGENBOOK.

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