US1060558A - Excavator. - Google Patents

Description

W. L. REED.

EXGAVATOR.

APPLICATION FILED JUNE 8, 1912 Patented Apr. 29, 1913.

6 SHEETS-SHEET 1.

' v W. L. REED.

EXOAVATOR.

APPLICATION FILED JUNE 8,1912.

Patented Apr. 29, 1912 6 SHEETS-SHEET 2.

mamas.

(Z. 73. mim.

W. L. REED.

EXCAVATOR.

APPLICATION FILED JUNEB, 1912.

Pate med Apr: 29, 1913.

6 SHEETSSHEET 3.

Snow 1 W. L. REED.

EXCAVATOR.

APPLICATION FILED JUNE 3, 1912.

Patented Apr. .29, 1913.

6 SHEETS-SHEET 5.

wi tmeoozo UNITED STATES PATENT OFFICE.

WILLARD L. REED, OF WASHINGTON, PENNSYLVANIA.

EXCAVATOR.

To (1/! 101mm it may concern.

Be it known that I, VVILLARD L. Reno, at

citizen of the United States, residing at \Vashington, in the county of lVashington and State of Pennsylvania, have invented certain new and useful Improvements in EXCZIVfli-(II'S. of which the following is a specification, reference being had to'the ac conipanying drawings.

This invention relates to excavating inaehines and has for its object to provide inachineof this charactcr which will operate etficiently upon either light or heavy materials, is strong and durable in construction and may be economically manufactured.

nothe1"object of the invention resides in the provision of a pivotally mounted swinging boom, a bucket to travel thereon and improved means for duiu ing the bucket. .\..further object of t einvention is to provide operating means for the traveling bucket to move the sameback and --forth upon the boom. said operating nwans-ineluding a cable which attached' tttthe bucket and is adapted to. move the same into closed position against a stationary end wall after the inaterial'has been dumped.

- A further and more specific object of the invention is to provide a bucket carriage to travel upon the pivoted boom. said carriage including an end plate which constitutes one end of the bucket when the same closed. a latch device mounted upon the carriage to engage the bucket and hold the same in closed position, and improved means for actuating said latch device atany point in the movement of the carriage to release the bucket and dump the material.

till another object of the invention is to generally improve and simplify the constrnction .of excavating machines of the above character whereby they will occupy eoin 'iarativcly small space-and may be ad vantageously employed -in excavating work without interfering with trath'c.

With the. above and other ob ects in view as will become apparentas the. descr ption proceeds, the-invention consists in certain constructions, combinations /and arrangements of the parts that I'shall hereinafter fully describe.

For a full understanding of the invention reference is to be had to the followii'ig description '1 and whioh--- Figure 1 is a side elevatiouot' an tXt'tH'u accompanying drawings. iu

Specification of Letters Patent.

Application filed June 8, 1912.

I l i l Pat ented Apr. 29, 1913. Serial No. 702,522.

ing machine embodying the present invention sl'iowiiig the bucket in position upon the boom to enter the "embankment and receive its load. Fig. 2 is a similar view showing the bucket on the outer end of the boom and its position after the load hasbcen dumped: Fig. 3 is a top plan view: Fig. 4 is section taken on the line 44 of Fig. 2; Fig. 5 is an enlarged section of the bucket showing the same upon the boom and in its closed position; Fig. 6 is a sectitin taken on the line 6-45 of Fig. 5; Fig. 7 is an enlarged detail section taken .on the line 77 of Fig. 4: Fig. 8 is a detail perspective view of theearriagc showing the'lateh member thereon: Fig. 9 is a detail perspective view of the drums and clutch operating means therefor; and Fig. 10 is a detail fragmentary section of one of the drums.

Corresponding and like parts are referred min the following description and designated in the accompanying drawings by like reference characters.

Referring in detail to the drawings 5 dcsigi'iates a base upon which the support-ingmembers 6 are mounted at one end thereof. These supporting members are connected b means of a transverse sill 7 upon which the inclined uprights 8 are erected, said uprights being, connected at their upper ends by a cross bar 9 and by the intermediate strengthening bar 10. inclined bracing beams 11 are secured to the. upper eiidsof the uprights and to the rear endof the platform or base 5.

Upon the sill 'i' a plate 12 is rigidly se-- cured, aid plate having a forwardly extending horizontal portioirupon the. under side,

of which the turn table 13 is mounted. This turn table provided with a peripheral groove to receive a cable 14. 'lhe,plate 12 is provided upon its edge with downwardly turned tongues or flanges 1.5 which extend beneath the turn table, at its outer edge and retain the same in position. The turn table is provided, with a central opening it; which coincides with an opening in he plate. 12.

the purpose of which will be more fully apparentas the dcscriptiow proceeds. The forwardly extending portion of the. plate 12 is, hracediiy. means of the 'bars li', the upper ends of which are bolted or otherwise securelyfixed to the uprights S.

To the under side ofthe turn table 11-, the depending hanger plates 18 are secured. and the lower ends of these. plates are connected by means of the transversely disposed rod the track flanges 24, whereon the traveling bucket carriage to be later described is adapted to move." To the forward end of the boom a sheave is attached which is traversed by a cable 26. Oneend of this cable is'fixed to the bar 9 of the frame structure, and the same passes around a second sheave or pulley 27 supported upon said bar. From this latter sheave the cable v .asses downwardly around a sheave 28 which is mounted upon a bearing plate 29 tixcd to the sill bar 7. From this sheave the cable passes rearwardly and is secured to a drum 30 upon which the same is adapted to be wound and unwound toraise or "lower the bucket carrying boom.

- The bucket carriage which is mounted to j move longitudinally on the boom embodies a body plate 31. to which spaced pairs of arms 32 are rigidly secured. These arms extend upwardly upon opposite sides of the boom and are provided with rollers 33 which are rotatably mounted upon the arms and rotate upon the track flanges 24 of the plate 23. To the forward end of the. body plate 31' and at opposite sides thereof the downwardly extending bearing members 34 are secured between which the bucket 35 is mounted, the side walls of the'bucket being pivotally mounted upon said bearing members at their forward ends by means of the short pins 36. The bottom wall of the bucket is forwardly extended to provide a dipper or scoop 37 which is adapted to cut into the soil as the bucket is moved upon the boom at the start of its outward movement when disposed in the'position shown in Fig. 1. The body plate 3,] of the bucket carriage has its rear end disposed at a right angle and downwardly extended to form the rear end wall of the bucket'when the same is in its closed position. as indicated 2t 38. This end Wall adjacent its upper end i provided with a slot 39 to receive the shouldered end 41 of a latch member 40-which is pivotally mounted as at 42 upon one of the hanger arms 32 of the bucket carriage. This shouldered end of 'the latch member whendisposed through said slot engagesbeneath the rear end of the top wall of the bucket and maintains the same in its closed position. The other end of the latch member 43 is vertically disposed andis adapted to be engaged b a trip rod 44. This rod extends longitu inally upon the boom and intermediate portion thereof other end of said cable is may be of any'desircd length, the ends of the rod beingdisposed at right angles to the and pivotally mounted upon the bearing plates 45, which are fixed upon the'boom. This trip rod is yieldingly held against downward movementinto engagement with the latch member by means of a leaf spring 46 which is fixed at one end to the boom and bears at its free end againsteone end of said rod.

The trip' rod is actuated by means of a bell crank lever 47 fulcrumed upon a supporting plate 48 secured to the boom. One end of this bell crank lever is laterally extended aat- 49 and disposed over the longitudinally 30 extending trip rod. To

the other end of said lever one end of a wire 50 is connected, the othereend of's'aid wire being connected to a plate 5l loosely' mounted upon the boom supporting rod 19. A second 'wire 52 has 5 one of its ends connected to said plate 'upon the opposite side of the rod 19 and extends upwardly through the central opening in the turntable 1?; and is connectedto one end of a lever 53 mounted uponthe transverse frame bar 10. v

Upon the forward end of the bucket carriage and beneath the boom, a sheave or pulley 54 is mounted in suitable hearin s or supports and around the same a cable 55 extends. One end of this cable is fixed t0- the outer end of the boom and from the sheave or pulley 54 the same extends around a. pulley 56 rotatably mounted in the outer end of the boom. ram this latter pulley the cable extends rearwardly and around a pulley 57 mounted upon the rod 19. The same is then passed upwardly through the opening in the turn table and over a pulley 58 mounted'upon the bearing plate 29. The

secured to a Second drum 59 and is adapted to be Wound thereon. I

The body plate otthe bucket carriage is provided with an opening (30 through which the end of a cable61 ispassed and attached in any preferred manner to the rear end of the-pivotally mounted bucket. This cable extends rearwardly beneath the boom and passes around asheave or pulley 62 mounted upon the rear curved end thereof. From this pulley the cable extends around a second pulley (33 mounted bet-ween the hanger plates 18 and then upwardly through the opening in the turn table and over another pulley 64 which is mounted upon the hearing plate 29. From this latter pulley the cable extends reamvardly and has its ends secured to a third drum 65.

Upon the shaftof each of the drums 30, '59 and 65 a sliding friction clutch member",

66 is arranged and: is adapted for enga ement with a friction surface on one of t e headwalls of the drum. Each of these clutch members is actuated through the mehers 66 upon the shafts crank willbc seen that when the'lever 70 is moved i clutch men-iber crank lever 68.

diam of a bell crank lever, said levers being designated 67, 68 and 69, respectively, which are fulcrumed upon suitable supporting members secured to the frame on which the drums are mounted. The clutch-memot' the drums 59 and (t5 whereon the cables for moving the bucket are wound and unwound, are adapted to be actuated through the medium of asingle lever 70 which is fulcrumed,intermediate of its ends and carries the usual spring pressed dog for engagement with the teeth of a rack 71. The lower end of this lever is connected bymean's of a rod. 72"tothe bell -An' arm 73 is .pivotally mounted upon the lever below its fulcrum point and isconnected to the other bell lever 69. From this construction, it

in one directioin'one of the bell crank levers will be actuated-to move the clutc'h member into frictional engagement with its drum head and the other lever will be act'uatedto move the other clutch member in. a reverse directionaud release the other of thedrums.

lhus the cable. will be; wound upon one .drum when the same is rotated and W111 1:11P" wind from the loose drum.

The reverse movement of the lever 70 \V IllIOf-QQIIISB, reverse therelatlve movementof the clutch- 'inembers., When the lever is standing in a vertical position.

both clutches are released. The bell crank lever 67-which.sl-1ifts the 66 upon the shaft of the drum 30"upon which the cable-26 is wound to i'aise and lowert'hc boom i's'connectedby' 'means of a rod '74 to thelo'wer. end of a lever 75 fulcrumed upon thcrack 'g' 6. A collar 77 is fixed upon the rod-74 and is adapted to engage a sleeve TSfformed' upon one end ofarod 7 9, the other'end of which is connected adjacent the slcevc 73' on end of the rod 79.

I the head walls to a bell crank lever 80'. To one arm of the lever v8O the end of a friction brake hand 81 is attached. -This band'is'adapted for engagementupon the periphery of one of of the drum 30 and isrlgidly fixed at its'other end in any suitable.iuanucr A toot levcr Sfiis also.

an upwardly disposed cud SEE-which,is'pivot'ally conncctcd to thc rod T!) at a. point the end of said rddf By means of this arrangement it will bc readily seen that upon shiftingt'hc' level" 75 ino uc direction; the clutch .mcmhcn iti is thrown into lockiugcngagcinent with the drumand ,Xvhen said lover is shittct-l in the opposite dircction. the clutch is. rclc ascd and the brake band's] also tightened-upon the drum'head theciigage ncnt of the collar 'TT-on the-rod T-l with the sleeve 78 on the 84 indicates an engine of any preferred form, the shaft of \Ylllt'll l:i connected'by'an "the frame structure,

shifting of this lever bers out, of engagementwith" n ig that the v in the carriage Ibuckct by v ate the bell crank 47 to force 1 he 'load carried thercbv.

upon the drum shafts whereby said'shafts' are rotated in the same direction. The shaft of the drum .is provided with an addi- '5 ed in. suitable bearings upon the frame strttctureQ On this shaft site ends thereof mounted.

adjacent the oppodrums 88 are loosely Conical friction clutch members '89 are keyed. upon the shaft 87 for slidin movementinto and.o.ut of engagement witthe friction surfaces provided upon the opposed ends of the drums 88. These cone members are connected by means of. the bar {)0 through the medium of which the same are actuated. :lhr ends of'the cable 14 which operates the turn table the-drums A level-.91 is mou nted upon and is connected by Ineans'of the 'rod 92 to the bar 90. The clutches 89 into engagement withits drum SB-and nim esthd'other of the clutch memits drum, whe eby onelofnthe drums will be locked 'u'po ,theshaft -ST that "one end ofthe cable 13 is wound upon the fixed drum and unwinds from theloose drum. In this manner the turn table may be rotated in either direction to' swing the boom laterally. By means of the foot 30 ,at any time independently of; the lever 13 are connected to uioves' one of the v' for rotation therewith, so

member the bra-keband 81 maybe. applied to drunr 'so that the vertical movement. of' the boom quay be controlled.

From the above the operation of the inachine will be understood as follows:,Assum traveling bucket is in the osition shown'in Fig. 1 of the drawings, w iercupwardly curved end of' the boom, and the bucket positioned at an angle with its scoop or dipper pointing downwardly. the

filled witlrea rth. \Vhen the bucket is disposed at. a desired point upon the outer end of. the boom. the ;boom is lifted'by winding the cable on the drum 30 and then swung laterally.

' The operator now releases the manipulating the lever 53 to actudowuwardly"upon the upper end -of.tho latch member 40. thcrclr 'pernnttiug the and release the bucket to swing downwardly rotated and thc ctiblc 'vl first returns the bucket to position beneath the body of the endless sprocket chain to sprocketsfixed l carriage and'causes the latch member which is arrangedmpon the rear.

the. bucket -outwardly- 'tliestraightportion tl'icrcof, the bucket is trip rod 4 1 projects'through the slot in the end of the carriage to again engage the end of the bucket and to support the same. Upon the further winding of-the cable upon the drum, the bucket is moved inwardly upon the rear curved end of the boom into position to receive another load. The above described operations are repeated with each movement of the bucket outwardly and inwardly upon the boom.

From the foregoing it is believed that the construction and manner of operation of my improved excavator will be fully understood. Owing to the specific construction and mounting of the parts and the manner in which the power is applied for the operation of the boom and bucket, it is not necessary that the frame structure be of great weight in excess of the strength required to support the boom, as is usual in machines of this character. The boom may be easily and quickly adjusted and swung to either side of the machine in' position to dump the contents of the bucket. The device is adapt ed for grading purposes, and is capable ofremoving successive surface layers of the grade without requiring any hand labor. Owing to the facility with which the operation of the bucket may be controlled the work may be quickly completed and the sides or surface of an embankment-may be neatly trimmed or finished entirely by the machine, thus eliminating hand labor which has heretofore been necessary. As but comparativ'ely few parts are employed in the construction of the device, it will be obvious that the same may be inexpensively manufactured, is extremely light as well as strong and durable in its construction and may be readily moved from place to place.

\Vhi'le I have shown and'described the preferred constructionand arrangement of the various elements, it will be obvious that the invention is susceptible of considerable modification without departing from the essential features or sacrificing any of the advantages thereof.

Having thus described the invention, what is claimed is:

1. ln an excavator, a pivoted boom, a carriage to travel longitudinally upon said boom, means to move the carriage back and forth upon the boom, a, bucket pivotally mounted upon the carriage for vertical swinging movement. sa d carriage having a downwardly extending plate constituting a stationary. end wall for the bucket, a latch device mounted upon the carriage to hold the bucket in its load receiving position with relation thereto, and means to actuate said latch device to release the bucket and permit the same to swing downwardly to dump the contents thereof.

2. In an excavator, a pivoted boom, :1 carage to travel longitudinally upon said boom, said carriage including a body plate having a downwardly extending end portion, a bucket pivotally mounted upon the other end of said plate, said downwardly disposed portion of the plate constituting a stationary end wall for the bucket, a pivoted latch member mounted on the carriage and adapted to engage one end of the bucket to support the same against pivotal movement and maintain the bucket in its loading position, means for moving the carriage back and forth upon the boom, a strip mem--' ber mounted upon the boom to engage the latch device and release the bucket, and means for actuating said trip member.

3. In an excavator, a pivoted boom, :1. carriage longitudinally movable upon the boom, said carriage including a longitudinally disposed body plate having a downwardly ex tending end portion. a bucket pivotally mounted'upon the other end of said plate,

said downwardly extending end of the plate one end to the bucket and adapted to return the same to its load receiving position.

4. In an excavator, a pivoted boom, aca'rriage to travel longitudinally on said boom, a bucketpivotally mounted for vertical swinging. movement on the carriage, a latch device mounted upon the carriage to engage said bucket and support the same in its load a receiving position, a longitudinally extending trip rod pivotally mounted upon the boom,-a bell crank lever mounted upon the boom and having one of its ends disposed in engagement with the trip rod, means to actuate said lever and cause the trip rod to engage the latch member whereby the bucket is released for swinging movement to dump the load carried thereby, and means for moving the carriage and bucket back and forth upon the boom, said means inllt eluding a cable connected at one end to the mounted on the boom and having one end engaged with said rod, a lever, a flexible connection between the lever and the bell crank to actuate thelatter and force the trip rod into engagement with the latch member to disengage said member from the bucket and permit the bucket to swing upon the carriage to dump the load carried thereby, and means for moving the carriage and bucket back and forth upon the boom, said means including a cable connected to the bucket and. adapted to return the same to its load receiving position after the contents thereo have been dumped.

6. In. an excavator, a pivotally mounted boom, a carriage to travel longitudinally upon the boom, a bucket pivotally mounted at one of its ends upon the carriage, a latch member mounted uponthe carriage to en-.

gage the bucket and support the same against pivotal movement, a pivoted trip member mounted uponthe boom to engage the latch member and release the bucket for movementto its dumping position manually operable means to actuate said trip member, and means to first return the bucket to its normal position upon the carriage and then move the carriage upon the boom to dispose the bucket in its load-receiving position thereon.

'7. In an'excavator, a pivotally mounted boom, a carriage to travel longitudinally upon said boom, a bucket ivotally mounted upon the carriage, a late member to support the bucket upon the carriage against pivotal movement, a trip member to engage said latch member and release the bucket for movement to its dumping position, a menually operable member pivotally mounted upon the boom to engage and actuate said trip member, and means to return the bucket to its normal position upon the carriage for engagement by said latch member.

8. ln an excavator, a pivotally mounted boom, a carriage longitudinally movable upon said boom, a bucket pivotally mounted at one of its endsnpon the carriage, means mounted on the carriage to engage said bucket and support the same against pivotal movement, a trip member mounted upon the boom to engage said supporting means and release the bucket for movement to its dumping position, a manually operable element pivotally mounted upon the boom to engage and actuate said trip member, and means connected to the carriage and to the bucket to return the same to its load-receiving position upon the boom, said means including a *able connected to the bucket to return the same into position upon the carriage for engagement by said supporting-ineans after the load has been dumped.

In testimony whereof I hereunto afiix my signature in the presence of two Witnesses.

WILLARD L. REED.

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