US1015488A - Excavator. - Google Patents

Description

A. D. HADSEL.

EXGAVATOR. APPLICATION FILED APR. 29, 1909. RENEWED JULY 12, 1911.

L15,488. Patented' Jan. 23, 1912.

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1015,488. 4 Patented Jan. 23, 1912.

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BXGAVATOR.

ArPLIoATIoN FILED 1211.29, 1909. RBNEWED JULY 12, 1911.

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EXCMMOR.4 y APPLICATION FILED APR.29, 1909. RENEWED JULI l2, 1911.k Patented Ja11.23, 1912.

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EXCAVATOR. A

APPLICATION FILED APR.29, 1909. RENEWEI) JULY l2, 1911.

1,01 5,488. 4 Patented Jan. 23, 1912.

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i ALVA 1)..HADSEL, 0F WILKES-BARRE, PEN NSYLVANIA, ASSIGNOR T0 CABLE EXCA- 'V'ATOR COMPANY, 0F PHILADELPHIA, PENNSYLVANIA, ACOPARTNERSBIP.

' EXCAVATOB.

Patentedaan. 23,1912.

Application led April 29, 1.909, Serial No. 492,815. Renewed July 12, 1911. Serial No. 638,211.

To all whom it may concern.'

Be it known that I, ALvAH D. HADsEL, a citizen of the United States, residing at l/Vilkes-Barre, in the county of Luzerne and State of Pennsylvania, have invented certain new and useful Improvements in Excavators, of which the following is a speciicajf tion.

This invention relates to power excavators and has especial reference to certain improveniente in this class of invention whereby the same are rendered more easy and certain of manipulation andvhence of greater capacity for the conveyance ofearth.

The invention consists incertain novel details of construction which will be hereinafter fully described and claimed and illustrated' in the accompanying drawings, in which--` f' Figure 1 is a side elevation of the invention; Fig. 2 is a plan view ofthe same; Fig. 3 is a front elevation and Fig. 4 is a rear ele vation of the same; Fig. 5 is a detail of the steering mechanism; Fig. 6 is a detail of the catch hereinafter described; Fig. 7 is a perspective detail of parts described below; Figs. 8, 9, and 10 are diagrams illustrating three dilferent positions of theY machine; Figs. 11 and 12illustrate a modification, and Fig. 13 is a detail of a part of the machine shown in Figs. 11 and 12.

Throughout the following description and on the several figures of the drawings similar and corresponding parts are referred to by correspondlng reference characters.

In the form of the invention illustrated in Fig. 1 et seg. there is used a distant oWer device in the form of an engine 10, sultably located at any desired stationary position and having independently operated drums L11 and 12. The excavator proper includes a frame 13 comprising al pair of channel beams 13 and 13, the major portions of which are parallel and substantially horizontal while the other portions thereof extend upwardly at one end and converge at their extreme rear ends where they receive there L between the journal or head 14 for the steer- Aand 13 approximately ing fork 15 in which is mounted the steering wheel 16. A transverse channel bar 17 is secured rigidly between the main channels 13 at the angles between the horizontal and inclined portions strengthen this portion of the frame and for other purposes to be hereinafter noted. A yoke 18embraces the lower end of the fork 15 and the axle for the wheel 16is connected thereto as wellas to the fork 15. The front edge of the yoke 18 is provided with gear teeth 18 provided with a rib 18Il parallel to the row of teeth 18. Secured rigidly to the .rear face of the transverse beam 17 is a bracket 19 which extends downwardly therefrom and then rearwardly, the rear end thereof embracing said rib 18a of the yoke, whereby the yoke is lmaintained in proper operative relation to the main frame of the machine. A steering wheel 20 is carried by a shaft 21' suitably journaled in bearings inthe framef including a bearing in the horizontal portion ofy said bracket 19. '.Rigidly connected to said shaft 21 andmeshingrl with the rack 18 is a pinion 22, whereby't e yoke 18 may be operated to steer the machine.. The wheel 20 is located in easy reach of an operator on the platform 23.

T he main channels 13 and 13" near their front ends are pierced by a peculiar axle 24 ,upon the ends of which are secured main' supporting wheels 25. That portion of the axle upon which the main frame is sup orted is offset or eccentric to the axis ofthe Wheels. By this means the main frame is susceptible of two distinctpositions Vof adand on its lower surface the yoke is Y soA justment. As shown in Fig. 1 in full lines the frame is held in its elevated position, the eccentric portion of the axle being above the axis of the wheels. By swinging the axle Aaround so that the eccentricy portion thereof will come to a lower osition the frame will .partake of a slight c ange of position with respect to thewheels as lndicated in dotted lines in the same ligure. One of the means which may be employed for controlling the position of the axle 24 consists of a pair of yokes 26, one on each side of the frame and havin shouldered portion of the axle. Each/of ,saidV yokes extends approximately at a right angle to the said shouldered portion of the axle 'and' rearwardlyA therefrom when the frame iselevated as shown in Fig. 1. A lug 27 is rigidly connected tveach of the main frame channels and adapted to co rate therewith is a stop 28 secured to the yo e 26. By this means t e rearward movement of the yokes is limited. A pair of catches 29 are pivoted at 30 to the main channels 13' direct embracing connection with the -A pair oflinks 32 connect the upper end of the catches 29 with a pair of cranks 33 connected to a rock shaft 34, operated by a leve;` 34 within reach of the operator on the platform. When the operator by this means withdraws the catches 29 from the hooks 28 the-front end of the frame and the load carried thereby -will gravitate downwardly swinging the axle through approximately ninety degrees and carrying the yokes 26 forwardly to a like extent, as indicated in dotted lines in Fig. 1.

The scoop 35 is swung at its front open end on the eccentric portion of the axle 24 between the main channel beams 13 and 13. The depth of the scoop'with respect to the axle on which it is hung is such that when the axle is elevated the cutting edge of the scoop will swing clear of the ground on which the wheels 25 are supported, but when the axle and :trame are dropped said cutting edge of the scoop will engage and enter the earth beneath the bottom line of the wheels in order that the scoop may be filled when the Vmachine is drawn toward thel engine. The rear end of the scoop is `supported on the upper edges of the main channel members by means of an angle bar 36 secured rigidly to the rear end of the scoop and projecting laterally beyond the sides thereof-suiiiciently far to engage the main frame members. This angle bar 36 limits the downward movement of the scoop but does not prevent the elevation of the rear c nd thereof. A pair of hooks 37 are operatlvely connected to a rock shaft 38 journaled m vthe inclined portions of the main trame members and which is operated in turn by a lever 38 adjacent to the operators platform. Said hooks 37 engage the upper edge of the rear end of the scoop to hold the same downwardlypwith the angle memvist ber. 36 against4 the main frame members. This position of the hooks 37 is maintained .during the filling operation of the scoop.

A rope A is connected to the drum 11 of the engine and adjacent to the excavator proper is divided into two parts, said arts eing passed around or over a series o pulleys 39, 40, 41, and 42, the ends of the said l rope members being connected to the upper edge of the scoop near its rear end at 43.

, The pulleys 41 arev j ournaled on the rear end of the scoop and all the others are journaled on the frame. A second power ropel B is connected to drum 12 of the englne and passes preferably over the top of the excavator over the pulleys 44 and 45, thence around thevfixed pulley 46, thence it is divided and the parts passed over or around direction pulleys 47 and tee-ir ends being connected to the upper ends of the yokes 26 by means of links 48.

When it is desired to load the scoop the rope B is slackened and the operator on the excavator withdraws the catches 29 from the hooks 28', permitting the frame to t'all as previously described thus bringing the cutting end of the scoop into engagement with the earth. Power being applied to the rope A will cause the entire machine to be drawn toward the engine filling the scoop with earth. When the scoop is loaded the draft on the rope A may or may not be stopped but power is applied to the drum 12 to wind the rope B thereon at a relatively greater speed, whereby the yokes 26 will be drawn l rearwardly with respect to the frame 13, thus elevating the frame and scoop to the carrying position indicated in full lines in Figpl. The operator will then cause the catches 29 to engage and hold the yokes in said position. When the machine thus loaded is drawn to the place et deposit the operator will disengage thel hooks 37 from the rear end of the scoop permitting a con tinued draft on the rope A to elevate the rear end of the scoop to the dumping position indicated in the diagram of Fig. 10.

The weight of the scoop will restore the same to its normal carrying position after being dumped.

. The form of the invention indicated in Figs. 11 and 12 is adapted for use in connection with a traction engine where long hauls are required, although it will be understood that thisvform of the invention is adapted for general operation. Inthis form of the invention the frame 131 is connected directly and permanently to the main front axle 49 on which the main wheels 50 of the traction engine are j ournaled. The rear end of the frame is supported upon a caster wheel 51 of any suitable construction. The

scoop 35v in this form of the invention 1s 4 similar in all substantial respects to that previously described, and is supported at its'rear end on the frame by an angle bar 36. The front end of the scoop is shown as being supported and elevated by differential ulley mechanism connected to the main rame. Said mechanism comprises a pair of differential hoists 52, the upper blocks of which are connected rigidly to a'shaft 53 journaled in the upright portion of the frame. The lower blocks 54 of the hoists have direct connection to the front end of the scoop. Connected to the shaft 53 is a drum 55 around which is 'an endless rope 56 driven from a reversible winch 57 mounted on the engine. When the winch 57 is operated in one direction the differential hoists 52 will permit the front. end of the scoop to in proper operative relation to theA main' frame 13'L and to prevent the rearward thrust thereof dueto the engagement of the earth from pushing the scoop rearwardly, a pair of linksvor barsv 58 are pivotally connected to the front end ofthe scoop at the points where the lower blocks 54 are connected and at their rear ends at 58 t-o the main frame members. This connection between the scoop and the frame will permit the lscoop to be raised or lowered at its front end during the operation of lilling and also the elevation o the rear end during the operation of dumping. Power ropes A are connected to the scoop in a manner quite similar to the connection of the rope A in the previous example, and at their forward ends are conneoted'to drums 11 carried by the engine and under the direct control of the engineer. These ropes A', however, are employed only for the purpose of dumping in this form of the invention.

Having thus described the invention, what is claimed as new is: l 1. An excavator comprising a frame includmg an upright, a plurality of pulleys carried by the upright, a scoop mounted within the frame, a pair of pulleys on the rear end of the scoop, means to support each end of the scoop so that'it may be elevated lndependently of any movement of the other end of the scoop, a rope connected tothe rear end of the scoop and passing thence over certain of the upright pulleys, thence over the scoop pulleys, and thence over other of the upright pulleys for the purpose of lifting the rear end of the scoop, and another rope serving to hoist the front end of the scoop.

2. In an excavator, the combination of an axle having an eccentric portion, supporting wheels connected to the concentric 'portion of the axle, a frame connected to the eccentric portion of the axle, a scoop supported at one end on the eccentric portion of the axle within the frame and rotatable on said eccentric portion independently of the frame, the other end of the scoop being supported on the frame, and meansy to swing the axle above the axis of the wheels :forA the a ortion eccentric to the axis of the wheels,

a rame having members mounted on the ec- 'centric portion of the axle, a scoop swung at one end on the eccentric portion of the axle and supported at its other end on the frame members, means to swing said raxle about the axis of the wheels to raise and lower the proximate end of the scoop, and means to raise the opposite-end of the scoop.

4. In an excavator, the combination of wheels, an axle on which certain of said wheels are mounted and having an eccentric portion, the eccentric and concentric portions of the axle having shouldered connections, a frame, a scoop mounted within the frame and pivotally connected at its front scoop mounted thereon, and means for elel vating the rear end of the scoop independently of movement of the front end.

5. In an excavator, the combination of support-in wheels, an axleon which certain of said w eels are mounted and having a portion Veccentric to the axis of said wheels a frame, a scoop mounted within the frame and swung at one end on the eccentric p ortion of the axle, a pair of yokes cooperating with the axle to control Ithe position thereof and thereby the elevation of that end of the scoop swung thereon, interlocking means between the yokes and theframe to ma1ntain the yokes in one position, and means to elevate the opposite end of the scoop.

In testimon whereof I afiix my signature in presence o two witnesses.

ALVAH D. HADSEL.

Witnesses:

EDMUND E. JoNEs, HlLMA PnTnRsoN.

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