US1360681A - Excavating apparatus - Google Patents

Description

J. L. AND J. LE R. POTTER.

EXCAVATING APPARATUS.

APPLICATION F|LED DEC. 24. 1917.

1,360,681, Patented Nov. 30,1920.

WITNESS:

'6. K zfMwc/z/ ATTORNEY.

, novel parts and in the combinationsandar rangements' ofparts or elements as herein- UNITED STATES PATENT OFFICE.

JOSEPH LEWIS POTTER, AND JOSEPH LE ROY POTTER, 0E INDIANAPOLIS, INDIANA.

EXCAVATING APPARATUS.

Application filed December 24, 1917.

To all whom it mayconcern:

e it known that we, JOSEPH LEWIS POT-'- Tim and JOSEPH Ln ROY POTTER, citizens of the United States, residing at Indianapolis, in the county of Marion and State of Indiana, have invented a new and useful Improvement in Excavating Apparatus, of which the following is a specification, ref.- erence being had to the accompanying drawings, and to the letters and figures of reference marked thereon.

This invention relates to the type of excavating apparatus which is adapted for slack-line work with a scoop or drag bucket, the invention having reference more ticularly to means for mounting the bucket on a controllable cable or slack-line for movably supporting the bucket and permitting" it to be controlled soas to quickly dump 1tsv cavating apparatus which shall be especially adapted to be efliciently used and operated by the minimum number of operators or attendants. whereby a high degree of economy in operation may be attained. v

A further object is to provide improved drag bucket construction and improved means for supporting and controlling the operations of the bucketcwithout requiring troublesome structural features such as drop bottoms, latching device's, springs or other elements that are liable to become damaged or deranged due to rough usage with consequent expense for repairs.

With the above-mentioned and other objects in view, the invention consists in an improved dumping bucket or scoop having improved supporting and controlling apparatus whereby to operate the bucket and automatically control the bucket so that it shall be tilted forward to dump its load and again righted to receive another load.

The invention consists also further. in the Specification of Letters Patent.

Patented Nov. 30, 1920. Serial No. 208,682.

after particularly described and further set forth in the accompanying claims.

Referring to the drawings :F igure 1 is a side elevation of the improved excavating apparatus in working position for trench work, a hoisting machine of well-known construction being indicated by broken lines as being adapted for use in connection with the invention; Fig. 2 is a side elevation of the principal features of the invention in 4 which the bucket is shown as when being carried with a load to be dumped, the carr age of the apparatus being in vertical sectron; Fig. 3 is an end elevation of the carrlage comprised in the invention; Fig. 4 is a section on the line IV-IV on Fig. 2; and, Fig. 5 is a side elevation, partially in sec tion, of the principal elements of the invention, the bucket being shown in the position required for dumping the load.

Corresponding reference characters on the different figures of the. drawings indicate like elements or features of construction herein referred to.

On the drawings the numeral 1 indicates a section of the earth 'in which a trench 2 is partially made, and ahead of the trench is a car 3 that has an upright frame 4 and also winding drums 5 and 6 so as to constitute a hoisting machine. Opposite to the car and beyond the trench is a suitable post or anchor block 7 to which a slack-line or aerial cable S'is connected and slackened or tightened by means of tackle blocks 9 and 10, and a cable 11 which is connected with the winding'drum 5. The frame supports a sheave 12 on which the cable 11 is guided and it supports'alsoa guide sheave 13 below the sheave 12. The tackle block 10 is arranged sufliciently high to support the adjacent end of the cable 8 at a higher altitude than the opposite end of the cable, so that the cable is inclined and may be slackened according to common practice.

An improved carriage is provided whichcomprises two side members 14.- and 15 suitably connected together with space between them and provided with carrying wheels 16 and 17 between the members, the wheels beingarranged to run upon the cable 8. The carriage is provided between the side mem-; ar it a suppo ting s eav l an a-g d sheave 19 and also lugs 20 and 21.

The improved drag bucketor scoop comprlses a body portion 22 having a bottom 23 and a forward extension 24, the forward end of the bottom being provided with di ging teeth 25. The extension of the-body portion .is provided with .a sheave 26 which preferably is arranged on an arch or top 27 forming a portion of the bucket. 'The top 27 has also a rigid longitudinal rib 28 thereonhaving a plurality of apertures 29 therein. A cable 30 is hung on the lug 20 and extends under the sheave 26, thence over the sheave 18 and thence to the rib 28 and adjustably connected thereto by means of one of the apertures 29, so as to tiltinglysupport the bucket on the sheave 18. it draglineor draft cable 31 is connected with the winding drum6 and extends over the sheave l3andthence below the cable 8 and it has ayoke portion 32 connected with the forward portion-of the bucket, and also a branch 33 connected to the'lug 21. The bucket has a hacker rear end 3 which is provided with an arm orba'il35. The latter preferably. being-designedtoconstitute a link is connected by means ofa pivot 36 with ears 27 pro jecting from the rear end of the bucket bot tom-23. A. controlling cable 38 is connected to the end of the arm or bail and extends over the guide sheave 19 for controlling the tilting of the bucket. The cable 38 preferably 'is'controlled'bymeans of a yoke which comprises "two side members 39 and LLO secured to spacing blocks 4L1 and 42 and provided with a lug 43, the opening between the side members receiving the cable 8 which supports the spacing block 4-1. The yokeis adapted to'be held against therear end of the carriage by the cable 38 which is connected to'the lug 43. A stop block is is socured to the cable 8 and is adapted to prevent the yoke from being drawn over it but is sufliciently small to be received 1n the space provided in the carriage and permit the carriage wheels to roll over it.

In practical use the carriage rolls by the force of gravity down'the inclined cable 8 and carries the bucket to the desired position for excavating, after which the cable 8 is slackened so asto lower the bucket as may be required, the yoke on the cable 8 be c ing pushed along 'by'the carriage as the latte -r descends. Upon properlyoperating the winding drum 6 the bucket is drawn forward untiliillod, after which the winding drum 5 is properly operated to draw up the cable 8 as may be required to hoist the bucket from the trench; 'The bucket on being' ho'isted and carried by the carriage is caused-by the load therein to tilt as indicated in Fig. 2 so as to retain the load.

' The draft yoke '32 being s'lackenedpermits the branch-33- to draw the carriage forward andoverthe stop block 45%, the cable 38 beingiheld tauti'by the bucket and drawing the yoke members 39 and 40 against the carriage until the yoke is brought into contact with the block 44 and stopped while the carriage is drawn farther forward, the action causing the cable 38 to be drawn up over the guide sheave 29 andthusforceihe rear end of the bucket upward, resulting in the bucket being tilted over relatively to the sheave l8 and the arm 35 with the forward ,end of the bucket downward so that the load must be discharged from the bucket. Onpermitting'the' cable 31 to be unwound from the winding drum 6, the carriage again descends until it engagesthe yoke on the cable 8 and carriestheyoke downward as beforepthecable 38 being thus permitted to run down over the sheave 19 so that the bucket again becomes rightedas it is lowered into the trench to repeat theexcavating operation. The whole proceeding, as will be seen, is automatic upon operation and control of the winding drums 5 and 6. l'lavingthus described the invention, what is claimed as new is I 1; An excavating apparatusincluding an aerial cable, hoist-ing means for slackening or 'tighten'ing the cable, a block secured to the cable, ,a carriage adapted to receive the block and having wheels'mounted, on the cable to roll overthe'block, the carriage being provided with a guide sheave, a yoke movably supported on one cable on the side of .the carriage to be moved thereby away from the hoisting means, a drag bucket tiltingly supported by the carriage and provided with a controlling cable extending over the guide'sheave and secured to the yoke to hold-the yoke to the carriage or per- 7 mit the block to stop theyoke when the carriage receives and passes the block, and a drag=line connected with the bucket and having a branch connected-to the carriage.

2. Inan excavating apparatus, the combination with an inclined cable, and a stop block secured to the cable, of a carriage movably mounted on the cable and adapted to receive and pass over thestop block, the carriage being provided with a guide sheave, a yoke movably mounted on the with the bucket and the yoke and extending over the guide sheave. V

3. In an 'excavating apparatus, the combination with ,a carriage having .a supportings'heave and a guide s'heave,of a dra bucket comprising a 'body with top and? bottom and also a rear end, the top of the bucket body having a rib longitudinally arranged thereon, the rib having a plurality of apertures therein, an arm pivotall y connected with the rear end of said body adj acent to said bottom, a supporting cable connected with said rib in one of said apertures and extending over the supportin sheave to and cooperating with the forward portion of said body top to tiltingly support the bucket, and a cable secured to the arm and extending over the guide sheave to control 10 the tilting movement of the bucket.

In testimony whereof, we affix our signatures in presence of two witnesses.

JOSEPH LEWIS POTTER. JOSEPH LE ROY POTTER. Vitnesses:

E. T. SiLvros, O. L. CROUCH.

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