US1449716A

US1449716A - Excavator and loader

Info

Publication number: US1449716A
Application number: US373045A
Authority: US
Inventors: Norman C Woodin
Original assignee: Individual
Current assignee: Individual
Priority date: 1920-02-07
Filing date: 1920-04-12
Publication date: 1923-03-27
Anticipated expiration: 1940-03-27
Also published as: US1369446A

Description

Mar. 27, 1923.

N. 0. WOODIN. EXC'AVATOR AND LOADER ORIGINAL FILED APR. I2, 1920.

Patented Mar. 27, 1923.

UN'EED NORMAN G. WOODIN, OF PRAIRIE DU SAC, WISCONSIN.

EXCAVATOR AND LOADER.

Application filed April 12, 1920, Serial No. 373,045. Renewed September 9, 1922. Serial No. 587,226.

To all whom it may concern Be it known that I, NORMAN C. Woonm, a citizen of the United States, and resident of Prairie du Sac, in the county of Sauk and State of Wisconsin, have invented certain new and useful Improvements in EX- cavators and Loaders; and I do hereby. declare that the following is a full, clear, and exact description thereof.

My invention relates to new and useful improvements in excavating and loading apparatus of that type including a suitably supported inclined trackway upon which a drag line scoop or scraper is adapted to ride whereby to procure a desired elevation of the scoop or scraper for dumping the same into a wagon-body or other receptacle located below the upper end of the trackway.

i It is in general the object of my invention to simplify and otherwise improve the structure and to lessen the power requirements of apparatus of this character and increase the convenience of operation thereof.

It is more particularly an important ob ject of my invention to provide an arrangement whereby an ordinary drag scoop or scraper may be caused to ride upwardly on an inclined trackway and to effect a positive dumping action upon reaching the upper end of the trackway.

A more detailed object resides in the provision of a carriage-member riding on the trackway and adapted to receive the scoop or scraper to carry the same upwardly and dump it upon reaching the upper end of the trackway.

A still further object resides in the pro-.

vision of an arrangement for imparting an automatic continuous jarring action to the scraper bucket in its dumping position on the machine whereby to insure the dislodgment of material which may tend to stick in the bucket.

With the above and other objects and advantages in view, my invention resides more particularly in the novel combination, formation and arrangement of parts'hereinafter described and pointed out in the appended claims.

In the accompanying drawings I Figure 1 is a plan view of an excavating and loading machine embodying my invens tion;

Figure 2'is a side elevational view of the machine, the dumping position of the ll ucket and carriage being shown in dotted ines.

Figure 3 is an end view of the machine;

Figure 4 is a detailed sectional view of the brake mechanism for the drag-line drum. v

Referring now more particularly to the accompanying drawings, the present embodiment of my invention is mounted on a turn-table frame 10 carried by the frame 11 of a truck including the rear drive. wheels 12 and the front wheels 13 which may be' steered in any suitable manner (not shown) whereby the entire machine may be readily transported from place to place, the turntable mounting of the frame 10 facilitating the placing of the trackway structure in desired position;

A track-supporting superstructure is mounted on the frame 10,-comprising a pair of bars 14 extending from one end of the frame obliquely upward thereover and projected outwardly of vthe other end of the frame and terminating in an end head 1=5 carrying a cablersheave 16, vsaid head being braced by oblique bars 17 extending from the head to the adjacent end portion of the frame 10 and secured to the housing of an engine 18 for supplying the necessary power. A sheathing-plate 19 is secured to the super-structure bars 1 1 and covers the operating mechanism hereafter to be described, said sheathing terminating in adepending discharge chute 20 adjacent the up, per end of the super-structure.

Channel-tracks are mounted at the sides of the inclined super-structure, each track comprising a lower channel-beam 21 rigidly secured to the super-structure by bars- 225' and an upper channel-section 23 having its adjacent .end beveled to abut the correspondingly beveled upper end of the lower section 21, and having its upper end piv otally connected with the superstructure," this pivotal connection being procured in the present instance by arms 24 projecting downwardly from the upper. ends of the channel-sections and provided adjacent said sections with longitudinal slots receiving" the end portions of a pivot-shaft 25. The rear ends of the channel-sections 23 are connected by a transverse bar 26 which seats upon the superstructure whereby the-chan nel-sections of the trackway are normally disposed in alignment. A scoop-receiving carriage 27 is movable along the trackway and is provided with forward and rear pairs of rollers 28 engaging in the track channels, this carriage comprising a bottom and sides to house the scoop, and being open at its ends.

The scoop or scraper bucket employed is of the usual type comprising a pan-shaped body 30 carrying rearwardly projecting handles 31 and open at its forward end, a bail 32 being pivoted to said forward end and connected with a draft-cable 33 which in the present instance is trained through a roller guide 34 carried by a frame 35 upstanding from the carriage 27, the cable being then extended to the upper end of the superstructure and trained about. the pulley 16 and thence extended to a suitable drum mechanism later to be described.

The scoop or scraper rides upwardl to its engagement with the carriage on an inclined slideway 86, said slideway being carried by a pair of bars 37 hinged to the adjacent corners of the frame 10, and the up per edge of the slideway terminates short of the frame. The lower portions of the lower track channels 21 are projected beyond the frame and inclined downwardly to receive the rear carriage rollers 28 whereby a corresponding inclination is imparted to the can riage in its lower position, to depress the outer edge of the carriage below the plane of the slideway 36 and thus facilitate the engagement of the bucket in the carriage.

When the machine is not in use, the slideway may be swung upwardly over the track structure and ample ground clearance is thus provided for travel of the machine. To in sure proper steadiness of the machine in operation, support legs38 are threadedly con nected to the corners of the frame adiacent the slideway, said legs being adjusted by their threaded connection to engage on a suitable base 39.

aking up now the operating means for the dragbucket 30, a counter-shaft 40 is mounted on the frame 10 and has drive connect on 41 with the engine 18. This shaft carries a pair of high and low speed gears 42 and 43, respectively, meshing with a pair of gears 44 and 45 respectively, mounted on a drumshaft 46 journaled on the frame 10. A winding-drum 47 is mounted on the shaft between the gears 44 and 45,'said drum being loose on the shaft and adapted for connection selectively with either of the gears by suitable clutch mechanisms such as shown at 48 and 49 respectively. The gear 44 is fixed to the drum shaft 46. A bucket-retracting drum 50 is loosely mounted on the outer end of the drum-shaft and is adapted for connection therewith by a suitable conventionally shown clutch 51. The countershaft 40 in addition to driving the drums, also affords a drive for the truck of the machine, and thus a pair of beveled gears 52 are loosely mounted on the crankshaft and controlled by a conventional clutch 53 and lever 54, said gears meshing with the gear of a centrally depending shaft 55 having beveled gear connection with a truck counter-shaft 56 from which chains 57 extend to the drive wheels 12 of the truck.

The drag-line 33, trained about the pulley 16, is wound on the drum 47. A second line 58, for retracting the scoop or scraper bucket, is wound on the drum 50 and is extended rearwardly through suitable roller guides 59 on the end of the frame. In operation of the apparatus, this line 58 is trained about a pair of pulleys (not shown) located at remote points on the ground and then secured at 60 to the rear end of the scoop or scraper.

In the operation of the apparatus, the drag-line drum 47 is driven by actuating either of its clutches 48 or 49 to draw the scoop or scraper toward the apparatus and to procure its proper load, the clutch 48 furnishing the low speed drive for the scraping or digging action, while the clutch 49 furnishes a relatively high speed drive to effect the travel of the scoop or scraper on the machine. As the scoop or scraper approaches the machine, it will ride upwardly on the slideway 36 and move into the carriage. The carriage is normally held against upward movement on the trackway by a piv' oted detent lever 61 thereon engageable with a stop 62 on the trackway. As the bucket moves to carriage-engaging position, however, the bail 32 of the bucket engages and rocks an angular lever 63 which is pivoted on the frame and connected by a cord 64 with the detent 61. The carriage is then free to move upwardly, and as the pull on the drag-line continues, the carriage and its contained bucket move upwardly onto the upper section of the trachway constituted in the present instance by the channel track sections 23, the forward rollers 28 of the carriage abutting the ends of the arms 24 secured to said track sections, which thus form stops limiting the movement of the carriage on the upper track sections. Further continued pull on the drag-line will then cause the upper track section to swing upwardly about its pivot, thus assuming the position shown in dotted lines in Fig. 2, wherein the carriage and scoop or scraper are in dumping position to dischargethe contents of the scoop or scraper into a wagon which may be driven thereunder, since the scraper bucket in its dumping position is disposed well to the side of the machine frame by reason of the extension of the super-structure.

is the carriage-track and scraper reach cured, the other end of the bandbeing slidably mountedon a bolt 69 and-engaged by a spring 70 also mounted on said bolt whereby to impart braking tension to the band. This tension is relieved in operation of the drum by a wedge lever 71 engageable under the movable end of the brake lever to oppose the action of the spring, and said lever 71 is connected with the knockout rod 66, as shown, to. apply the brake simultaneously with release of the clutch and thus hold the scoop and carriagein dumping position,the brake being partly released when it is desired to return the carriage andbucket, which movement is effected by gravity.

While held in dumping position, a continuous jarring action is imparted to the carriage and bucket by means of a plurality of cam projections 72 carried on a shaft 73 having drive connection 74 with the counter-shaft 40, these cam projections being engag-sable by the. roller-carrying outer en portions of arms 24 which, are secured to the.track sections 23, said outer end portions of the arms comprising sections hinged-to the main portions of the arms and resiliently urged to alignment therewith by springs 75 whereby to permit a slight yielding of the arms when necessary in engaging the cam projections inasmuch as it is impossible to procure an exact action of the knockout mechanism in releasing the clutch and applying thebrake of the drag,

line drum. When the carriage and bucket move to dumping position, a continuous jarring action is thus automatically setup in the direction of sliding movement of the track ivots afforded by the slots of the arms 24, whereby any dirt or clayey matter which may tend to stick in the scoop or bucket will be loosened therefrom and dumped.

Summarizing now the structure and operation of the, entire machine, it will be seenthat I have provideda comparatively simple and highly efficient apparatus which may be most conveniently and efiiciently operated to elevate and dump successive loads of material gathered in the scoop or scraper bucket 30, said bucket moving from the g n t i nga e t in the l afl s and thence to its dumping position with the carriage upon a continuous and even winding action on the drag-line 33, the operation of the apparatus being semi-automatic and thus imposing minimum requirementsof at;

tention on the operator.

While I have shown and described a preferred embodiment of my invention, it will be appreciated that various changes and modifications OfStl'LlCtllIB to meet different conditions of use and that various phases of my invention may be employed independently of the complete structure described without departing in any manner from the spirit of my invention as defined by the ap pended claims. i

What is claimed is:

1. An apparatus of the class described comprisinga pair of inclined tracks having opposed channel portions, a dump carriage, rollers on said dump carriage engaged in the channel. portions of the tracks, .the upper end portions of the tracks bein oted, and a draft member connected with said carriage for moving it along said tracks and for rocking theupper end portions of the tracks to dump 'the'carriage.

2. An apparatus of the class -described including an inclined trackway having a piv oted upper portion, a carriage movable along said trackway, a load-carrying mein ber engageable with said carriage, and a drag-line connected with said member and extending beyond the pivoted portion of the trackway.

3. Anapparatus ofthe class described'ineluding an inclined trackway, a carriage movable along said trackway, means for dumping the carriageat the upper end of the trackway, a load-carrying member mov; able toward and away from .the apparatus and engageable with the carriage, and a drag-line connected with said member and extending along the trackway.

4. An apparatus of the class described including an inclined trackwaypa carriage movable along said trackway, means for.

dumping the carriage at the upper end of the trackway, a load-carrying member movable toward and away from the apparatus. and engageablewith said carriage, a guide carried by the carriage, and a drag line connected with said load-carrying -member andextended through the guide and along the trackway.

operable by i traclrway, power actuated means for drawing said dragdine, and means automatically -..=ovement oi the carriage to dumping position :t'or halting operation ct said power actuated means.

6. An apparatus of the class described in cluding an inclined trackway, a carriage movable along said trackway, means for dumping said carriage the upper end or" the trackway, aload-carrying member movable toward and away from the apparatus and engageable with the carriage, a dragline connected with said member and extending along the tracltway, and means for holding the carriage against movement on the trackway releasable by movement of the load-carrying member toward the carriage.

7. An apparatus of the class described including an inclined traclzway. a carriage movable along said trackway, means for dumping: said carriage at the upper end of the trackway, a load-carrying member movable toward and away from the apparatus and engageable with the carriage, a dragline connected with said member and extending along the trackway, a stop member adjacent the lower portion of the trackway,

a movable detent on the carriage engageable with said stop-member. and means operable by engagement of the load-carrying member therewith for releasing said detent.

S. An apparatus of the class described including an inclined trackway, a carriage movable along said trackway, means for dumping said carriage at the upper end of the trackway, a load-carrying member movable toward and away from the apparatus and engrageable with the carriage, a dragline connected with said member and eX- tending alonp; the tracltway, a. stop member adjacent the lower portion of the trackway, a movable detent on the carriage engageable with said stop member, a lever carried by the carriage and engageable by the load-carrying member upon movement thereof to engagement with the carriage. and a connection between said lever and detent.

9. An apparatus of the class described ineluding an inclined trackway, a carriage movable along said trackway. means for dumping said carriage at the upper end of the trackway, a load-carrying member movable toward and away from the apparatus and engageable with the carriage, a dragline connected with said member and extending along the trackway, an upstanding trame on the carriage, a guide for the drag line carried by said fran'ie, a stop member adjacent the lower end of the trackway, a movable detent carried by the carriage and engageable with said stop member, and a lever pivoted to said frame and connected with said detent member and engageable by the drag-line connecting portion of the load-carrying member to release said detent.

10. An apparatus of the class described comprising a main inclined trackway portion, an upper trackway portion forming a continuation of the main traclrway portion and pivotally mounted at its end remote from the main tracltway portion, a carriage movable along said trackway portions, a load-carrying member movable toward and away from the apparatus and engageable with said carriage, and a drag-line connected with said load-carrying member and extending along the trackway beyond the pivoted portion thereof.

11. An apparatus of the class described including'a wheeled frame, a slide-way pivoted to one end portion of the frame and adapted to extend adjacent the ground, an inclined trackway mounted on said frame and extending upwardly from said end portion thereof, a carriage movable along the trackway and adapted to tilt at the upper end portion thereof, a load-carryingxmember movable toward and away from the apparatus and adapted to move over said slideway to engagement with the carriage, and a drag-line for said load-carrying member eX tending along the trackway.

12. An apparatus of the class described including a base-frame, a super-structure mounted on said base-frame, a pair of inclined track members supported by said super-structure, a second pair of track members supported by said super-structure and normally disposed in alignment with the upper portions of the first named track members, the remote ends of the upper track members being pivotally connected with the super-structure, a carriage, rollers on said carriage engageable with the track members, a drum on the main frame, a load-carrying member movable toward and from the apparatus and engageable with the carriage, a sheave on the super-structure located beyond the pivoted portions of the upper track-members, and a drag-line connected with said load-carrying member and trained about the sheave and wound on the drum.

18. An apparatus of the class described including an inclined trac-kway, a load-carrying member movable along the trackway, means for procuring dumping movement of said load-carrying member at the upper portion of the tracltway, and means operable incidental to said dumping movement for continuously automatically jarring said load-carrying member.

14:. An apparatus of the class described including an inclined trackway, a load-carrying member movable along the trackway, means for procuring dumpingmovement of said load-carrying member at the upper portion of the trackway. a driven arring member, and an arm movable with the load-carrying member and engageable with the jarring member upon dumping movement of said load-carrying member to continuously automatically jar said load-carrying member in dumping position.

15. An apparatus of the class described including an inclined trackway having a pivoted upper portion, a load-carrying member movable along said trackway, means for moving said load-carrying member along the trackway and rocking the pivoted portion of the trackwayto procure dumping position of the load-carrying member, and means connected with the pivoted portion of the trackway for continuously jarring said trackway and load-carrying member in dumping position thereof.

16. An apparatusof the class described including an inclined trackway having a pivoted upper portion, a load-carrying member movable along said trackway, means for moving said load-carrying member along the trackway and rocking the piv oted portion or the trackway to procure dumping position of the load-carrying member, an arm projecting from the trackway, and a driven jarring member engageable by said arm in dumping'position of the track way and load-carrying member.

17. An apparatus of the class described including a main inclined trackway portion, an upper trackw-ay portion adapted to form a continuation of said main trackway portion and having a slidable pivot mounting at its end remote from the main trackway portion, a load-carrying member movable over said trackway portions, a drag-line connected with said load-carrying member and extended beyond the pivoted upper portion of the traokway to swing said track portion to dumping position upon movement of the load-carrying member there- .over, and means engageable with said track member for jarring said track member in the direction of sliding movement of its pivot connection.

18. An apparatus of the class described including a main inclined trackway portion, an upper trackway portion adapted to form a continuation of said main trackway portion and having a slidable pivot mounting at its end remote from the main traclrway portion, a load-carryingmember movable over said trackway portions, a drag-line connected with said load-carrying member and extended beyond the pivoted upper portion of the trackway to swing said track portion to dumping position upon movement of the load-carrying member thereover, a driven jarring member, and an arm projecting from the pivoted track portion and engageable with said jarring member in dumping position of said track member.

19. An apparatus of the class described including a main inclined trackway portion, a movable upper trackway portion adapted to form a continuation of the main trackway portion, a pivot shaft having limited slidin pivotal connection with the upper end or the upper trackway portion, a load-carrying member movable over said trackway portions, a drag-line connected with said member and extended beyond the upper track'- Way portion to procure dumping pivotal movement of the upper. traclrway portion upon movement of the load-carrying member thereo-ver, a driven jarring member, and

an abutment carried by the upper trackway portion engageable by said member in dumping position of the upper track portion.

:20. An apparatus of vthe class described including an inclined trackway, a load-carrying member movable along the trackway, means for procuring dumping movement of said load-carrying member at the upper portion of the traclrway, a driven jarring member, and a resiliently yieldable member movable with the load-carrying member and engaging said jarring member upon move ment of the load-carrying member to dumping position. I p

21. An apparatus of the class described including an inclined trackway, a load-carrying member movable along the trackway, means for procuring dumping movement of said load-carrying member at the upper portion of the trackway, a driven jarring member, a resiliently yieldable member movable with the load-carrying member and engaging said jarring member upon movement of the load-carrying member to dumping position, means for moving said load-carrying member along the trackway to dumping position, and means for automatically halting operation of the first named means upon said load-carrying member reaching dumping position. a

22. An apparatus of the class described including a main inclined trackway portion, a movable upper trackway portion adapted to form a continuation of the main trackway portion, a load-carrying member movable over said trackway portions, means formoving the load-carrying member onto the up per trackway portion, and then rocking said upper trackway portion to. dump the loadcarrying member, a driven jarring member, and a resiliently yieldable arm projecting from the upper trackway portion and engageable with said jarring member in clumping position of the trackway portion.

23. An apparatus of the class described including an inclined trackway, a load-carrying member movable along the trackvvay; means for procuring dumping movement of said load-carrying member at the upper portion of the trackway, a drivenjarring memher. and a resiliently yieldable arm movable with the load-carrying member and engaging said jarring member upon movement of the load-carrying member to dumping position, the resiliently yielding action of said arm being exerted transversely of its direction of movement by the arring member.

2a. An apparatus of the class described including a pair of inclined tracks having opposed channel portions, the upper end portions of the tracks being pivoted, a dump carriage, rollers on said dump carriage enthe channel portions of the tracks a load-carrying member movabletoward and away from the apparatus a line-guide on the carriage, and a drag-line secured to said load-carrying member and passed through said guide and extended along the tracks beyond the pivoted upper end portions thereof.

25. An apparatus of the class described includinga wheeled frame arms pivoted to said frame and adapted to eXtend outwardly therefrom adlyent the ground in inclined positioma shdeway mounted on said arms, the inner er ge of said slide-way being spaced from the frame, an inclined trackway mounted on the frame and extending upwardly from the portion thereof adjacent the slideway, a carriage movable along the trackway and adapted to project beyond the frame with its receiving edge portion adjacent the inner edge of the slidewa-y a loadcarrying member movable toward and away from the apparatus, a drag-line connected with said member and extended along the trackway, and means for procuring dumping movement of said carriage adjacent the upper end of the trackway.

26. An apparatus of the class described including an inclined trackway, a load-carrying member movable along said trackway, means for procuring dumping movement of said member incidental to its movement at the upper end portion of the trackway, a sheave adjacent the upper end portion of the trackway, a drum, clutch-controlled means for driving said drum, a brake for said drum, a drag-line connected with the load-carrying member and trained about said sheave and wound on the drum, and means operable upon dumping movement of the load-carrying member for automatically releasing said clutch and applying the said brake to maintain the load-carrying memher in dumping position.

27. An apparatus of the class described including an inclined trackway, a load-carrying member movable along said trackway, means for procuring dumping movement of said member incidental to its movement at the upper end portion of the trackway, a sheave adjacent the upper end portion of the trackway a drum, clutch-controlled means for driving said drum, a. brake for said drum, a drag-line connected with the loadcarrying member and trained about said sheave and wound. on the drum, means operable upon dumping movement of the loadcairying member for automatically releasing said clutch and applying the said brake to maintain the load-carrying member in dumping position and means for automatically imparting jarring movement to said load-carrying member in dumping position thereof.

In testimony that I claim the foregoing I have hereunto set my hand at Milwaukee, in the eounty of Milwaukee and State of Wisconsin.

NORMAN C. WOODIN.