US619802A - stubbs - Google Patents

Description

No. 619,802. Patented Feb. 2|, I899- J. STUBBS.

EXCAVATING MACHINE.

(Application filed June 14, 1898.) (N 0 M 0 d e I.)

2 Sheets-Sheet I.

No. 6l9,802. Patented Feb. 2|, |a99.-

J. sTuBBs.

EXCAVATING MACHINE.

(Application filed June 14, 189B.)

2 Sheets-Sheet 2.

(No Model.)

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UNITED STATES PATENT OFFICE.

JESSE STUBBS, OF MOUNT PLEASANT, IOWA, ASSIGNOR TO THE IOWA BALLAST AND IMPROVEMENT COMPANY, OF SAME PLACE.

EXCAVATlNG-MACHIN E.

SPECIFICATIONforming part of Letters Patent No. 619,802, dated February 21, 1899.

Application filed June 14,1898. Serial No. 683,448. (No model.)

:[b all whom it may concern:

Be it known that I, J ESSE STUBBS, a citizen of the United States, and a resident of Mount Pleasant, in the county of Henry and State of Iowa, have invented certain new and useful Improvements in Excavating-Machines, of which the following is a specification, reference being had therein to the accompanying drawings.

The object of this invention is to provide an excavating-machine which will be especially adapted for use in forming drainingditches or for doing other excavating work and for digging clay and depositing it upon a kiln to be burned to form clay ballast for use on railway road-beds and similar purposes.

The invention consists in the novel combination and arrangement of parts hereinafter a detail end elevation thereof, and Fig. 4 is a detail view of the clutch mechanism.

Referring to the various parts by letters and figures, A designates a suitable support mounted upon wheels and adapted to run on suitably-laid tracks. This support may be of any desired form, but is shown in the drawings as. a railway box-car; Extending laterally from said support isa frame E. This frame is supported at the upper end of thecar A and is provided near its outer-end ,with a pair of guide-rollers Z, between which slide a guiderod F, whose lower end is secured to the center of a yoke f, the ends of whichare pivoted to the forward upper end of a scoop D. This scoop is tubular in form, its front edge inclining forward and downward to form the lower cutting edge D, the yoke f being pivoted to the scoop near the upper end of said inclined front edge. Near the forward end of the bottom of the scoop is pivoted the rear ends of a bail or yoke e by means of eyes n, secured to the sides of the scoop. To this yoke is secured one end of a rope K, whose other end is passed over a pulley H, which is supported on the frame E, near the inner end thereof, and is then carried around a windingdrum C, mounted upon the support A.

lower ends.

The rear of the scoop is closed by a gate a,

which is pivoted to lugs secured upon the upper surface of the scoop. Upon the edge of the gate are formed two upward and forward extending arms h, which extend between the pivot-lugs carried by the scoop, the pivotbolts 12 passing through these arms at their Connecting these arms h at their upper ends is a cross-bar c, which is formed midway between the arms h with an eye, to which is connected a rope I. The other end of'this rope is carried overapulley G, secured to the outer end of the frame E, and is then carried to a winding-drum B, mounted on the support A.

Mounted in suitable guides at the middle of thelower edge of the gate a is a spring latch bolt n, whose lower end engages a keeper 0, carried by the rear edge of the bottom of the scoop, the spring m maintaining said bolt in engagement with said keeper. Secured to said latch-bolt and extending rearward and downward therefrom is a trip-arm d, which is adapted to contact with a stop andrelease the gate to deposit the contents of the scoop. p

Carried by the support A and extending longitudinally thereof under the inner end of the frame E. is a strongly-built stationary hopper M,whose ends are open and whose sides I) incline inward and downward, the bottom of said hopper being narrow and open, as shown. Below this hopper and running parallel therewith is a conveyer N, which receives the material from the hopper M, the

bottom of the said hopper opening directly over the center of the conveyer N. This latter conveyer carries material to a conveyer L, which projects outward at right angles to conveyer M and extends a suitable distance away from the support in order to deposit the material at the desired place. This conveyer L is pivoted at its inner end on horizontal pivots h, and its outer end is supported and raised and lowered by means of a rope m and suitable sheaves 2' and 7c, the latter being connected to the outer end of the frame E. Any suitable mechanism may be employed for actuating the conveyers and the winding-drums B and C.

If it is desired to limit the inward and upward movement of the scoop, a bell-crank lever 1 is pivoted upon the support A above the hopper M in such a position that the horizontal arm thereof will be engaged by the cutting edge of the scoop just as the load of material is dumped into the hopper. To the vertical arm of the lever is secured cords or rods 2, which are connected to brake-straps 3. These straps are adapted to be applied to the drums l3 and C to check the winding up of the ropes I and K. To release the drums from the driving mechanism at the instant the brakes are applied, the drums are loosely mounted upon their shafts and are provided with clutches 4, which are released by means of levers 5 and ropes 6. Ropes 6 are connected to ropes 2 in such a manner that a pull on these latter ropes will apply the brakes and simultaneously release the clutches of the drums. By these means the scoops will be brought to a stop in the proper position over the hopper and held there until released and lowered. It also will be obvious that if the operator fails to stop the drums at the proper instant no injury to the machine will result, as the mechanism just described will automatically act.

The hopper M is rigidly mounted on the support A and is built very strong in order to sustain the repeated shock of the material falling from the scoop. The sides of the hopper are inclined toward each other, and the narrow bottom is left open in order to feed the deposited material to the conveyerbelow without jar or shock to the conveyer. This conveyer is located a sufficient distance below hopper M to insure the material passing through the hopper-bottom and being spread upon the conveyer. The open ends of the hopper permit the material to slide laterally from the hopper to the conveyer and permit the conveyer to readily take the material from the hopper.

The mechanism for automatically stopping the scoop is shown merely in outline in the drawings, and it may be varied as desired. It has therefore been deemed unnecessary to illustrate this mechanism in detail.

The operation is as follows: When the parts are in the position shown in dotted lines in Fig. 1, the rope K is wound on its drum and the scoop is drawn toward the support A and takes up a scoopful of material. hen it is full, the ropes I and K are so manipulated that the scoop is raised and carried inward to the top of the hopper M and is carried over the top thereof rear end downward in such a manner that trip-arm (1 contacts with the outer top edge of the hopper and releases latchbolt 71 from keeper 0 and permits gate a to open and discharge the material into the hopper. The hopper receives the jolt and jar of the dumped scoop-load and then permits the material to gradually slide through to the conveyer M, by which it is carried to conveyer L. By means of this latter conveyer the material is carried to the desired place of deposit. After the scoop-load has been deposited the scoop is drawn outward by means of the rope I. The first pull on this rope through the medium of the arms h swings the gate a 011 its pivot and closes it and causes latch-bolt n to engage keeper 0. The scoop is then manipulated by means of the ropes I and K until it is in position to take up another scoop-load. The rod F guides the scoop and maintains it in its proper position for convenient manipulation and prevents a too great lateral movement of the scoop.

Having thus fully described my invention, what I claim, and desire to secure by Letters Patent, is

1. In an excavating-machine the combination of a support, a lateral frame extending therefrom, a scoop, ropes and winding-drums for raising or lowering the scoop and for drawing it toward and from the support, a hopper carried by the support, said hopper being formed with downward and inward inclined sides and an open bottom, a conveyer carried by the support below the hopper and adapted to receive the material from the hopper, and means for automatically dumping the scoopload into the hopper, substantially as described.

2. In an excavating-machine, the combination of a support, a lateral frame extending therefrom, a scoop, an end gate therefor, means for securing said gate in its closed position, means for raising and lowering the scoop and for drawing it toward and away from the support, a rigid hopper carried by the support, said hopper being formed with downward and inward inclined sides and an open bottom, a conveyer mounted on the support below the hopper and adapted to receive the material therefrom, and a device carried by the scoop end-gate and adapted to contact with the hopper and release the end-gate, substantially as described.

3. In an excavating-machine the combination of a support, a frame extending laterally therefrom, a hopper, a scoop, ropes for drawing said scoop toward or away from the support, winding-drums for said ropes, brakes adapted to engage said drums, and a device in the path of the scoop and adapted to be engaged thereby after it has discharged its contents into the hopper, means connecting said device to the brakes, substantially as described.

4. In an excavating-machine the combination of a support, a frame extending laterally therefrom, a scoop, ropes for manipulating the scoop, winding-drums for said ropes, said drums being loosely mounted on their shafts, brakes adapted to engage said drums,clutches carried by the shafts of the winding-drums and adapted to engage the drums, a device in the path of the scoop and adapted to be engaged thereby after it has discharged its contents into the hopper, and means connecting this device to the brakes and clutches of the winding drums, whereby said brakes and clutches will be simultaneously operated, substantially as described.

5. In an excavating-machine the 'combination of a support, aframeextendinglaterally therefrom, a scoop, an end-gate hinged to the rear upper end thereof, a latch-bolt carried bysaid gate, a keeper for said bolt carried by the scoop, a trip-arm carried by said bolt, a fixed stop adapted to engage said trip-arm, a forwardly and upwardly extending arm carried by the end-gate at its hinged end, a rope connected to said arm wherebya pull on said rope will close the end-gate, a rope connected to the forward end of the scoop, sheaves for said ropes, and suitable winding-drums for said ropes carried by the support, substantially as described.

6. In an excavating-scoop the combination of a tubular body portion having a forward cutting edge, means attached to the forward end thereof whereby the scoop may be drawn forward, an end-gate for the rear end of said scoop, said gate being pivoted to the upper side of the body portion, a spring latch-bolt carried by said gate, a keeper for said bolt carried by the rear edge of the scoop, a triparm carried by the latch-bolt and adapted to engage a stop torelease the latch-bolt, an up ward-extending arm carried by the gate, said arm extending above the end-gate hinge, and a rope secured to said arm wherebyapull on said rope will close the end-gate, substantially as and for the purposes set forth.

In testimony whereof I affix my signature in presence of two subscribing witnesses.

JESSE STUBBS.

Witnesses:

O. M. DRUMMOND, WARREN B. STUBBs.

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