US1313911A - Planooraph co - Google Patents

Description

- J. L. AND 1. LE R. POTTER.

EXCAVATI NG APPARATUS.

APPLICATION FILED 0c.24. 19w.

Patented Aug. 26, 1919.

eff 447 INVENTORS:

ATTORNEY X f 23 a a THE COLUMBIA VHNOGRAPH C0,, WAIIIINGTON, I). C.

UNITED STATES PATENT OFFICE.

JOSEPH LEWIS POTTER AND JOSEPH LE ROY POTTER, OF INDIANAPOLIS, INDIANA.

EXCAVATING APPARATUS.

Specification of Letters Patent.

Patented A11 26, 1919.

Application filed December 24, 1917. Serial No. 208,683.

To all whom it may concern:

Be it known that We, J OSEPII LEwIs Por- TER and JosEPH LE 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, reference being had to the accompanying drawings and to the letters and figures of reference marked thereon.

This invention relates to excavating apparatus of the type which is adapted for drag-line work with a scoop or drag bucket, the invention having reference more particularly to means for dragging the bucket and for lifting and carrying the bucket and permitting it to be manipulated so as to quickly dump its load; the invention having reference also to means for operating and controlling the bucket generally in operation.

An object of the invention is to provide improved means which shall be simple and inexpensive for handling excavating buckets conveniently, expeditiously and economically.

Another object is to provide improved excavating apparatus which shall be especially adapted for use in connection with a hoisting machine and more particularly one having a swinging boom.

A further object is to provide improved apparatus for ditching work which shall be so constructed as to be free from troublesome features, such as drop bottoms, latching devices, springs or other devices liable to become damaged or deranged in operation and entail expense for repairs, which apparatus shall be adapted to be efliciently used and simply controlled by the minimum number of operators or attendants.

lVith the above mentioned and other objects in View, the invention consists in improved excavating apparatus comprising a dumping excavating bucket and controlling appliances therefor whereby the bucket may be operated as a scoop and lifted with its load, and whereby the bucket may be shifted relatively to its support and caused to tilt or turn over and dump its load. The invention consists alsofurther in the novel parts, and in the combinations and arrangements of parts or elements, as hereinafter particularly described and further defined in the appended claims.

Referring to the drawings, Figure 1 is a side elevation of the improved apparatus in working position for trench work, broken lines indicating a hoisting machine of well known construction with which the invention adapted to be used; Fig. 2 is a side elevation of the improved drag bucket and its controlling appliances arranged as when the bucket is being hoistedwith its lead; Fig. 3 is a side elevation of the drag bucket and its controlling appliances arranged as when the bucket is in dumping position; and, Fig. 1 is a rear elevation of the drag bucket.

Similar reference characters on the different figures of the drawings indicate corresponding elements or features of construction hereinafter referred to.

()n the drawings the numeral 1 indicates a section of the earth in which a trench '2 partially niade and ahead of which a car 3 is arranged; and the car has a boom 4 that is supported and raised or lowered by means of a cable 5, and a winding drum (3 on the car. The car has also winding drums 7 and S thereon and the end of the boom has a sheave 9 thereon; the foregoing being of well known or any suitable or desired con- Stl'llt'tlOH.

The dumping drag bucket comprises a body portion 10 having an upper forward portion 11 that extends past the forward end of the bucket bottom 12, the latter having digging teeth 13. The upper forward portion of the bucket body has an arch 1% provided on its top with a longitudinal centrally arranged rib 15 whereby to lift the forward end of the bucket, the rib having a plurality of apertures 16 therein. The bucket has a back or rear end 17 and is pro vided also with a. bail or arm 18 which is pivotally connected as a link with the bucket adjacent to the bottom thereof; but to permit the bucket to freely work in a trench so that the bail or arm shall not drag against the sides of thetrench, the bail or arm is preferably connected by means of a pivot 19 to cars 20 that project rearward from the back 17. The bail is adapted to stand up against the back 17 when the bucket is at work and is swung away while the bucket is caused to tilt or turn over in dumping operations, the swinging end of the bail being provided with a sheave 21 and also a guard 22 extending rearward of the sheave.

. cable 26 is connected with the winding drum 8 so as to be wound thereon and this extends over the sheave 9 and thence downwardly for lifting or lowering the bucket, being connected to a pivot pin 27 on which a pulley block 28, having a pulley or sheave 29, is hung. A suitable cable 30 is connected to the Y 24, so as to be practically connected with the cable 23, and this extends over the pulley 29 to the rib 15 with which it is connected by means of one of the apertures 16. A yoke 31 is pimtttllY. connected also to the pivot 27 and supports a sheave 32. A link or yoke 33 preferably is provided also and connected to the pivot 27 whereby a cable 3-1 which is directly connected to the link is thereby connected with the pivot. The cable 3 1 extends downward and under the sheave 21, thence upward and over the sheave 32 and thence downwardto the rib 15 to which it is connected by means of one i of the apertureslG. The cable 34 can be adjusted along the rib 15 so as to practically shift the bucket body forward or rearward relatively to the supporting sheave 32, as may be found desirable; and likewise the cable 30 may be re-adjusted relatively to the rib 15.

In practical use the bucket is carried by means of the cable 26 and by controlling the winding drum 7 the cable 23 is controlled so as to hold up the forward port-ion of the bucket, somewhat as shown ,in Fig. 2, and as the bucket is lowered to the ground or into the trenchor ditch, the cable26 is permitted to run slack while the cable 23 is wound upon the winding-drum 7 so as to drag the bucket forward until filled, after which the bucket is hoisted by means of the cable 26 while the cable 30 drawn taut by the cable 23 prevents the bucket from tilting forward, in case the load in the bucket is so distributedv as to cause tilting while being hoisted, the cable 23 being permitted to run out in some cases with the winding-drum under control. After hoisting the bucket sufficiently high it is usually swung around so as to deposit the earth along the side of the trench or ditch, or the bucket may be permitted to swing back to dump its load into the ditch in which masonry work may Copies of this patent may be obtained for have been completed to be covered with the earth; in order to discharge the load the cable 23 is slackened, so that the cable 30 runs over the pulley 29 and permits the forward end of the bucket to descend, in which operation the cable 34 runs over the sheave 32 and around the sheave 21, the bail 18 being drawn away from the back of the bucket so as to cause the bucket to be tilted to dump its lead, as shown in Fig. 3. The bucket may again be righted by drawing on'the cable 23 so as to pull the cable 30 over the pulley 29 and draw up the forward end of the bucket. Having thus described'the invention, what is claimed as new is- 1. In an excavating apparatus, the com bination of a drag bucket, an arm pivoted to the bucket, a bearing sheave mounted on the arm, a hoisting cable, a yoke carried by the cable, a carrying sheave carried by the yoke, and a carrying cable connected to the bucket and to the hoisting cable and eX tending over the carrying sheave and under the bearing sheave.

2. In an excavating apparatus, the combination of a carrying pivot, a pulley block' and a yoke connected to the pivot to swing separately thereon, a carrying sheave mounted in the yoke, an excavating bucket, a bearing sheave mounted on the bucket, a carry ing cable having connection with the carrying pivot adjacent to the yoke and secured to the bucket, the cable extending under the bearing sheave and over the carrying sheave, and a controlling cable extending through the pulley block and secured to the bucket.

3. In an excavating apparatus, the combination of an excavating bucket, a bail pivoted to the bucket, a bearing sheave mounted on the bail, a carrying pivot, a pulley block and a yoke and also a link connected to the pivot to swing separately thereon, a pulley mounted in the pulley block, a carrying sheave mounted in the yoke, a carrying cable secured to the link and extending under the bearingsheave and thence over the carrying sheave and to the bucket and secured thereto, a guard on said bail adjacent to the bearing sheave to retain the cable on the sheave,-a draft cable connected to the bucket, and a branch cable connected to the draft cable and secured to the bucket separately from the carrying cable, the branch cable extending over said pulley.

In testimonywhereof we aifix our signatures in presence of two witnesses.

lVitnesses E. T. SiLvrUs, C. L. CROUCH.

five cents each, by addressingthe Commissioner of Patents, Washington, D. 0.

Images