US1457594A - Excavating device - Google Patents

Description

June 5, 1923.

. L45 7,5% P. NEARY EXCAVATING DEVICE Filed May 17, 1922 3 Sheets-Sheet ljune 5, 1923.

P. NEARY EXCAVATING DEVI CE 5 Sheets-Sheet 2 Filed May 17, 1922 @emula June 5, 1923. 3,457,594

P. NEARY EXCAVATING DEVI CE Patented .lune 5, 1923.

UNITED STATES PATENT OFFICE.

EXCAVATING- DEVICE.

Application led May 17, 1922. Serial No. 561,568.

T0 all whom z't may concern.'V

Be it known that PHILIP NEARY, citizen of the United States of America, residing at Seattle, in the county of King and State of Washington, has invented certain new and useful Improvements in Excavating Deljr'ices, of which the following is a specificaion.

This invention relates to an improvement in excavating means of that type embodyinga power operated shovel-like excavator, adapted to force or cut its way into the material to be excavated, and to receive a load from such operation for transportation and dumping at a remote point.

In excavators of this type, considerable difficulty has been experienced in properly loading the excavator by forcing vor drawing the same into the material, as thru the shovel-like type of the usual excavator, any obstruction in the path thereof tends to tilt or deflect the excavator, with a consequent reduction in the quantity of material picked The present invention aims to overcome this particular objection, among others, by constructing the excavatorjproper of cylindrical form, and'mounting it for free rotative movement in the supporting frame, whereby in the event of an obstruction in the path of the excavator', a simple rotative movement ofthe excavator results without in any way interfering with a proper'dig ging and cutting movement of the excavator. Therefore, a full digging load is assured under all circumstances.

In excavators of the usual type,'it is customary to provide a door or closure capable of being released from a remote point when it is desired to dump the load of the excavator. .f Heretofore, the door locking means has formed a part of the excavator proper, and as such accumulated dirt inthe use of the excavator, and required frequent cleaning for satisfactory service.

A further object of the invention is the provision of door locking or holding means arranged remote from the excavator proper and as such ordinarily free of dirt accumulation, hence insuring a proper release and locking of the door under all working circumstances.

The invention is illustrated in the accompanying drawings, in which:

Fig. l is a perspective view of the improved excavator.

Fig. 2 is a front elevation of the excavating receptacle.

Fig. 3 is a detail, sho-wing particularly the door controlling means.

Fig. 4 is a transverse section thru the excavating receptacle, showing particularly the details of construction.

Fig. 5 is a transverse section thru the excavating receptacle, showing the means for rotatably supportingthe same.

The improved excavator isy of the type designed more particularly for slidable support on a cable-like member, indicated at 1, the excavator being drawn along thls member to accomplish the excavating work.

The excavating receptacle comprises a cylindrical shell 2, open at both ends and exteriorly reinforced by longitudinally arranged narrow strips 3 having outturned edge fianges 4.v The strips extend from the forward edge of the shell to a point short of the rear edge thereof, and are bolted or otherwise secured at 5 to the shell. In applied position, the reinforcing strips have their edge flanges 4 spaced apart, and strengtheningv bars or ribs 6 are secured between adjacent edge flanges by bolts or rivets 7. i

The projection ofthe shell beyond .the rear end of the reinforcing strips provides an annular channel 8, the strips being interrupted slightly ini rear of the forward end of the shell to provide a second similar annular channel 9. The ribs 6 are omitted between the edge iianges 4 of the reinforcing strips 'and digging teeth 10 of an appropriate form are removably secured between'the edge flanges 4 of the reinforcing strips at this forward portionof the reinforced excavating receptacle. The diggmg teeth 10 are of usual digging point form, and rearwardly of the point are recessed rto receive the forward ed e of the shell. These teeth on the` ,Outer .si e of the yshell have rearwardly extending portions which are inserted between the flanges 11 of each pair and secured thereto.

As thus arranged, the receptacle is of cylindrical form, presenting exteriorly a series of longitudinally arranged ribs, which reinforce the receptacle and at the same time provide against excessive wear of the body thereof, the forward circular edge of the receptacle being provided thruout with a series of spaced cutting or digging teeth.

The receptacle as a whole is supported in a frame including longitudinal frame bars 11, 12, and 18, the bars 11 and 12 being diametrically opposed with respect to the receptacle, and the bar 13 being centrally above the receptacle. Annular hangers 14, secured to the respective bars 11, 12, and 13, seat in annular channels 8 and 9 of the receptacle, to thereby rotatively support the receptacle in the frame.

An upstanding frame work indicated generally at 15 is connected to the longitudinal frame bar 13 and braced at 16 from the side frame bars 11 and 12. Upper and lower guide rollers 17 are mounted in the frame 15 'at appropriate points, the rollers being grooved to cooperate with the cable 1, whereby the excavator as a whole is adapted for appropriate movement longitudinally of the cable. The inclined frame bars 27 forming part of the frame 15, are inclined upwardly and forwardly and are connected at their upper ends above the upper guide rollers 17 by longitudinal bars 28. These bars extend rearwardly of the rearmost bars 27 and are connected to the upper end of rods 29, which at their lower ends are connected to a. curved frame 30, the forward end of which is connected to the bars 13, and the rear end of which is provided with 'a roller 31 to cooperate with the arm 20 of the door.

The rear end of the excavating receptacle is closed by a door 18 pivotally supported at 19 at the rear end of the longitudinal frame bar 13, an arm 2O rising from the pivotal connection as a rigid part of the door structure. The door is adapted to be closed by gravital movement, and to be held closed by a. series of interconnected levers 21, which extend thru and terminate in advance of the receptacle in a trip lever 22, pivoted between the forward bars 27 and provided with a weight 23 adapted for adjustable positioning on the trip lever. The free end of the re'armost lever 21 which is pivotally supported between the rear bars 27 is adapted to rest normally immediately in advance of ythe arm '20, thus preventing opening of the door, the'systein yof levers being adapted for adjustable connection one to the other, through a link 24 adapted for connection with any one of a series of holes in each of the levers, When the trip lever is moved ranged for adjustable connection with the cable 1, and is of a. form to pei-init the free end of the trip lever to ride therein, so that further forward movement of the receptacle will operate the series of levers to release the door. The door operating means, as well as the means for holding the door in closed position, are thus arranged wholly beyond the excavating receptacle, and are little liable to become inoperative thru the accumulation of dirt.

The side frame bars 11 and 12 are formed at their forward ends for the removable connection thereto of a draft means 26, here shown as a chain, thru which the excavator may be forced into the material to bev excavated or drawn from place to place after being loaded.

As stated, the excavatingreceptacle is inoiiiited for free rotation in the hangers 14, and as the receptacle is of cylindrical form` it is of course apparent that it would be effective for loading purposes in any rotative position. Therefore, if obstruction is encountered in digging, the natural tendency to deflect the edge of the receptacle, which in the usual shovel typev would prevent proper loading, will, in the present type, merely turn the receptacle in its bearings until the obstruction is displaced or the receptacle rides around the same. 1n any event, a normal load will be obtained under all conditions of operation.

Claims:

1. An excavating receptacle vcomprising a shell of cylindrical form, longitudinally arranged reinforcing strips seciired on the exterior of the shell and having out turned flanges and reinforcing bars secured between said flanges.

2. An excavating receptacle comprising a cylindrical shell, spaced strips having out turned edge flanges secured to the exterior .of the shell adjacent one end thereof, and

digging teeth removably secured between said flanges.

3. An excavator including a frame, annular hangers carried thereby, and a cylindrical excavating receptacle mounted for free rotative movement in the hangers.

l. An excavator including a freely rotative excavating receptacle, av door closing one end thereof, and means arranged wholly beyond the receptacle for holding the door in closed relation, said means being operable to release the door for opening under gravital influence.

5. ln an excavator, a frame work, a receptacle revoluble therein and having a cutting edge, door for the receptacle, a cable lupon which the frame work is mounted for sliding movement, and means arranged beyond the receptacle for tripping the door.

6. In an excavator, a Jframe Work, a reoeptaele revoluble therein and having a out- 5 ting edge, a door Jfor the receptacle, a cable upon which the frame Work is mounted for sliding movement, and tripping means adjust-ably secured upon the cable, lever mechanism on the receptacle cooperating with the door and adapted to be engaged by the tripping means for automatically releasing the door in the travel of the frame Work on the cable. v

In testimony whereof I alix my signature.

PHILIP NEARY.

Images