US1025569A - Road-grading and excavating machine. - Google Patents

Description

E. A., HOLLENBEGK. ROAD GRADING AND EXOAVATING MACHINE. APPLICATION FILED MAR-29, 1910.

1,025,569. PAtentedMay'P, 1912.

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E. A. HOLLENBEOK. ROAD GRADING AND EXGAVATING MACHINE. APPLICATION TILED MAR. 2. 9, 1910. 7 1,025,569, Patiented May 7, 1912.

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A. HOLLBNBEOK. ROAD GRADING AND EXGAVATING MACHINE.

APPLICATION FILED MAR.29, 1910. 1 ,O25, 569, Papented May 7, 1912.

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UNITED STATES PATENT OFFICE.

ELIJ'AH A. I-IOLLENBECK, 0F HOLDREGE, NEBRASKA, ASSIGNOR TO THE I-IOLLENBECK MANUFACTURING 00., OF HOLDREGE, NEBRASKA.

ROAD-GRADING AND EXCAVATIN G MACHINE.

Specification of Letters Patent.

Patented May '7, 1912.

To all whom it may concern:

Be it known that I, ELIJAH A. HOLLEN- BECK, a citizen of the United States of America, and resident of Holdrege, in the county of Phelps and State of Nebraska, have invented certain new and useful Improvements in Road-Grading and Excavating Machines, of which the following is a specification.

This invention relates to excavating machines and is designed as an improvement in the mechanism described and claimed in my Patent Number 900,369, issued October c, 1908.

An object of this invention is to provide a novel attachment for traction engines which may be readily applied to the boiler and parts of a traction engine in a manner to allow its ready removal when the traction engine is to be used for other purposes, the

a said attachment being designed for the purpose of grading roads or treating surfaces of earth for the purpose of converting it into a road or way.

A further object of this invention is to provide a road grader having a conveyer with novel means for automatically adjusting the conveyer belt according to the weight of the material carried thereby; furthermore, an object of this invention is to provide power transmitting devices having a clutch and having novel means for controlling the cluteh coupled with a frame for suspending the conveyer and the operating parts of the excavator from the boilen. and frame of a traction engine.

A still further object of this invention is to provide novel means for controlling the action of the excavator proper and its relation to the inner end of the conveyer, novel means being also provided for coupling the excavator frame to the traction engine in order that said excavator will take motion therefrom.

Many other objects are attained through the provision of novel mechanism to be hereinafter described and specifically claimed.

In describing the invention in detail, reference will be had to the accompanying drawings, forming part of this specification wherein like characters denote corresponding parts in the several views, in which- Figure 1 illustrates a view in perspective of the complete apparatus for attachment to a traction engine; Fig. 2 illustrates a front view of a traction engine with the front truck removed and with the attachment ap plied thereto; Fig. 3 illustrates a side elevation of a traction engine in outline showing that part of the apparatus on one side of the traction engine in elevation; Fig. 1 illustrates a detail view of a portion of the conveyer embodying a dust-proof boxing for a roller thereon; Fig. 5 illustrates an enlarged detail view of a fragment of the drive roller for the conveyer showing its automatic bearing alinement and reversible gear; Fig. 6 illustrates a detail sectional view with the lower roller of the conveyer in elevation and a knife for removing earth from the roller and a receptacle for containing the earth removed from the roller. Fig. 7 is a detail view of the screw conveyer, for removing the dirt from the receptacle or trough 79, and Fig. 8 illustrates a perspective view of a fragment of the conveyer rails and parts associated therewith.

In these drawings, I have shown hangers 10 provided with heads 11 which are designed to be bolted to the boiler casing of a traction engine, the said hangers having their lower ends connected to the sills 12 which form the frame for supporting nearly all of the apparatus comprising the excavator and conveyer. As shown in Fig. 2, the sills extend under the boiler 15 of the traction engine transversely thereof. The

ends of the sills that project at one side of the engine and at the inner end of the conveyer to be presently explained, are connected to an end sill 16, thus forming with the sills 12 a rigid frame with relation to which the excavator and conveyer are adjustable.

The sill 16 may be connected to the rear traction wheel in any appropriateway and said sill 16 carries a standard 17 to which are pivotally connected the bars 18 and 19. The pairs of bars 18 and 19 just mentioned embrace the standard 20 of the mold board 21 of the excavator, which mold board is set to direct the earth of excavated matter to the mouth of the conveyer as shown. The standard 20 is pivoted to the bars or links 18 and 19 by means of fastenings 22 of any appropriate type. The forward ends of the bars are pivotally connected to a rod 23 which is suspended by a chain 24: adapted to be wound on a shaft 25. I provide the shaft with a worm wheel 26 in mesh with a worm 27, the said worm being mounted on a shaft 28 provided with a hand wheel 29 for rotating the same. The shaft 25 is journaled in extensions of the arms or posts 30 which are supported by the sill 16, the said sill 16 having its end bent in a manner to form a support for one of the posts 30, whereas the main portion of a sill 16 supports a companion post 30. By means of the foregoing mechanism, the standard 20 and excavator blade 21 may be raised and lowered at will; the standard 20 retaining its substantially perpendicular relation to the sill 16, in all its adjusted positions; as is readily discernible in Figs. 1 and 3. As a means for moving the mechanism with the traction engine, the sill 16, as stated, is connected to the rear traction wheel and a pull rod 31 is connected to the sill 16 and extends upwardly and forwardly of the boiler of the traction engine and is secured to said boiler as well shown in Fig. 3.

By reason of the elements and their relation to one another heretofore described, it will be apparent that the excavator may be elevated or lowered through the manipulation of the hand wheel 29 and that, thereafter, the depth of the cut made by the excavator may be varied to suit the conditions of the road and the particular requirements. The conveyer hastwo side rails 32 and 33 connected at their inner ends by a shoe 34 which shoe is turned up at its end at 35, in order that it may slide over the surface of the earth.

The side rails of the conveyer have the dust-proof journal boxes 36 which receive the shaft 37 of the lower conveyer roller 38 over which the conveyer belt 39 is run. The side rails are also provided with journal bearings for the conveyer belt supporting rollers 40 which are tapered in diameter toward their centers in order that the conveyer belt running thereon will have a trough-like formation for the purpose of confining the earth or excavated material therein, as the belt travels thereon. The outer drum or roller 41 of the conveyer has a shaft 42 with a beveled gear wheel thereon which is in mesh with a gear wheel 43, said wheel 43 being mounted on a tumbling rod 44. The shaft 42 is journaled in a bearing 45 secured in one side rail of the conveyer. Said bearing has arms 46 and 47 terminating in bearings 48 and 49 respectively for the tumbling rod 44. The raising and lowering of the elevator frame, which action will be presently explained, makes it impractical to have the journal bearing 45 rigid on the conveyer and therefore the shank of the journal bearing is made round in order that it may revolve and assume any desired angle necessary to conform to the direction assumed by the tumbling rod. The ournal bearings 48 and 49 serve the double purpose of retaining the bearing in line and permit the changing of the small beveled gear wheel to the opposite side of the companion gear wheel when it is desired to run the conveyor belt in the opposite direction, the relation of these companion gear wheels being defined by the direction of rotation of the line shaft of the engine to which the excavating and conveying apparatus is applied.

The tumbling rod 44 has a knuckle joint 50 by which it is connected to the shaft 51, the said shaft having a clutch 52 by which the shaft 51 is drawn into and out of connection with the shaft 53, which shaft 53 is provided with a sprocket wheel to engage a sprocket chain 55 taking motion from the shaft 56 of the engine through its engagement with the sprocket wheel 57 on said shaft 56. By reason of the connection just indicated, the conveyer is driven as the engine is operating although the said conveyer may be drawn out of action by the clutch just described.

The inner side rails 32 and 33 of the conveyer frame are in lapped and parallel relation to the outer side rails 32 and 33 respectively, the latter being provided with slots 34 at their inner ends which receive the studs 67; the latter being secured to the inner rails 33 and extending through the substantially horizontal links 60 and through the substantially vertical links 66, for the purposes hereinafter explained, and the studs 67 are slidably movable in said slots, whereby a relative movement of the lapped ends of the said rails is obtained, by means of the following described mechanism. The outer side rails of the conveyer frame have the levers 58 pivoted to them at 59, said levers being also pivoted to the links 60; and hence as the said levers 58 are oscillated, the outer side rails of the conveyer frame are moved longitudinally, proportionally to the movement of the levers 58 and thus the length of the con veyer frame is increased or diminished for the purpose of tightening and loosening the conveyer belt. The levers 58 have rods 61 connected to them and to chains 62 which are run over sheaves 63 on a shaft 64, and shaft 64 has a hand wheel 65 by which it may be rotated for the purpose of adj usting the position of the levers 58. The links 66 having their lower ends pivoted to the studs 67 and having their upper ends journalcd on the crank 68, carried by a rotatable shaft 69, which is provided with a hand wheel 7 O, for the purpose of turning the shaft to adjust the position of the links serve as means for raising and lowering the outer portion of the conveyer frame. The shaft has a ratchet wheel 71 thereon which is engaged by a dog 72 for the purpose of holding the shaft 69 at its different positions of adjustment. Brackets 7 3 are connected to the boiler 15 at the points 7l75 and the said brackets brace the frame on which the bearings for the shafts 69 and 64: are rotatable.

The inner end of the conveyor frame is adapted to be raised and lowered in unison with the excavator 21 through the medium of an arm 76, to which a chain 77 is attached; this chain is connected to the conveyer frame. The arm 76 is attached to the standard 20 and moves, as stated, with the excavator. In order to prevent the accumulation of earth on the roller at the inner end of the conveyer, I provide a knife 78 which has its edge in close proximity to the periphery of the roller in order that any accumulation of earth on the roller will come in contact with the edge of the knife and will be dislodged thereby. The knife is formed integral with the box or receptacle 79, which is designed to receive the earth which is dislodged from the roller. By this means, the roller is kept clean in order that the conveyer belt may have proper action on its surface. The outer end of the conveyer frame is provided with a shield or housing 80 which is a frame like structure designed to protect the conveyer belt when the conveyer is close to the ground or is being operated in filling carts, wagons, or other vehicles.

In order to remove the material scraped from the roller, I provide a pulley a designed to rotate the shaft of the screw conveyer Z), and the said shaft of the screw conveyer is journaled in brackets a secured to the elevator frame.

I claim: I p

1. In a road grading machine, a frame adapted to be connected to a traction engine comprising a sill in substantially horizontal alinement with the line of travel vof said engine, said sill having a substantially vertical standard secured to its rearward portion, substantially parallel bars pivoted at their rearward ends to said standard and attheir forward ends to a vertically reciprocable rod, anexcavator blade having a substantially vertical standard extending upward therefrom and pivoted to said parallel bars, and means coacting with the rod for raising and lowering the excavator, whereby the said standard thereof retains its vertical relation in its different adjusted positions.

2. In a grading machine, a combination of a conveyer and an excavator and means for movably supporting the conveyer and excavator embodying a frame consisting of a sill and vertical posts on the sill, said frame being connected with the conveyer, a vertical standard supported by the sill, bars pivotally secured to the standard above and below the sill, a vertical rod pivotally connected to the bars, an excavator-blade pivotally connected with the bars, and means embodying said posts and said vertical rod for raising and lowering the excavator-blade relative to the conveyer.

In testimony whereof, I hereunto affix my. signature in the presence of two wltnesses.

ELIJAH A. HOLLENBEOK.

Witnesses:

R. W. MORTIMER, JOHN IMERSLUN.

'Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. G.

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