US534510A - Excavating-machine - Google Patents

Description

v G; W; KING. -EXOAVA TING MACHINE.

' (No Model.)

No. 554,510. P5555555 P55. 19, 1895.

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UNITED STATES PATENT Orrrcn.

GEORGE W. KING, or MARION, OHIO.

EXCAVATlNG-MACHINE.

SPECIFICATION forming part of Letters Patent No. 534,510, dated February 19, 1895.

Application filed July 18, 1894.. Serial No. 517,870- (No model.)

To all whom it may concern:

Be it known that I, GEORGE W. KING, of Marion, in the county of Marion and State of Ohio, have invented certain new and useful Improvements in Excavating-Machines; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it pertains to make and use the same.

My invention relates to improvements in excavating-machines; and it consists in certain features of construction and in combinations of parts hereinafter described and pointed out in the claims.

The subject-matter of this application pertains more especially to the means employed for actuating the shovel or dipper-arm longitudinally in order to thrust the dipper oris a plan, partly in section, of a portion of the reversingear employed.

Referring to the drawings, A represents the car or body-portion of the machine, the same,

at one end, being provided with a turn-table,

B, that is mounted on an upright hollow shaft 0. A boom or crane, D, is suitably secured to the turn-table, as at D, in any approved manner. The boom or crane consists, in the main, of two upwardly and outwardly inclined beams or timbers d d located a suitable interval apart (see Fig. 2), and suitably tied together. The boom or crane is also shown connected with the top portion of the adjacent end of the car or body-portion of the machine, preferably to a bracket E that is pivotally supported, as at e, from the body-portion of the machine in such a manner, as to accommodate the swinging of the crane or boom in a horizontal plane, by actuating the turn-table with which the crane or boom, as already indicated, is suitably connected. The turn-table is actuated by means of a continuous chain, B, that engages said table, and that is attached, at opposite ends, to windingdrums B 13?, respectively, the turn-table-actuating-chain being paid out by the one drum while it is wound upon theother drum, and the turn-table being actuated in the one direction or the other according as the operating-chain is wound upon the one winding-drum or the other.

The shovel-proper or dipper F is swung in a vertical plane in any approved manner, the apparatus employed for the purpose, consisting, preferably, of a continuous chain, G, that, at one end, is secured to the craneor boom, as at G, and thence leads downwardly to and under a sheave or pulley G pivotally connected with the shovel-proper or dipper, and thence returns and leads to and over a sheave or pulley G supported by the crane or boom in suitable proximity'to point G. From sheave or pulley G the chain leads to sheaves or pulleys G carried by bracket E; thence, leads in a horizontal or approximately horizontal plane to and over a sheave or pulley G carried by the top portion of the carer bodyportion of the machine, and thence leads downwardly to and is suitably attached to a winding-drum G supported inany approved manner on the body-portion of the machine.

By the apparatus just described, it is chvious that the shovel-proper or dipper is hoisted or elevated by actuating the windingdrum in the direction to take up the chain or cable, and that the dipper is permitted to descend by gravity upon actuating the windingdrum in the direction to pay out the hoistingchain.

The means employed for actuating the shovel or dipper-arm, f, longitudinally, as required to thrust the shovel-proper or dipper in and out in the operation of the machine,

and that, as already indicated, constitutes the subject-matter of this application, is shown to chain leads to and over an idler M, and thence leads to and over another pocket-pulley N, also loosely mounted upon said shaft; thence leads to a guide-sheave or pulley I supported in suitable proximity to pulley or sheave I and thence leads downwardly to its lower point of attachment to the shovel or dipperarm, as at H any suitable number of guidesheaves or pulleys h being employed between pulleys I I and pulleys K N. Shaft L is adapted to be rotated continuously in one direction, and the arrangement of parts is such that chain or cable II is actuated in the one direction or the other according as operative connection is established between said shaft and the one or the other of pocket-pulleys K and N, the result being that the shovel or dipper-arm is actuated longitudinally in the one direction or the other, to thrust the dipper in or out, according as said chain is actuated in the one or the other direction. Shaft L is rotated continuously in one direction in any approved manner, the same being provided with a driving-wheel L to which the power is applied.

Beams or timbers cl d of the boom or crane are, of course, located a suitable interval apart to accommodate, between them, the lo cation and operation of the shovel or dipperarm and sheaves or pulleys I I I would here remark thatthe driving-wheel L of shaft L is preferably a sprocket-wheel or chain-pulley and is operatively connected by means of an endless-chain with a sprocketwheel 0' operativcly mounted on shaft 0 that is supported from the car or body-portion of the machine and driven in any approved manner, and upon which shaft 0 are loosely mounted the winding-drums for operating the turn table actuating chain and hoistingchain, and which drums, by means of suitable clutch-mechanism (not shown), are capable of operative connection with their supporting-shaft.

A suitable clutch is provided for each of the loose pulleys K and N for establishing operative connection between the respective p ulley and its supporting-shaft. Friction-clutches are preferably employed for the purpose. The one member P of said clutchesis carried by the respective pulley, and the othermembers P of the clutches are rigid with the shaft. The two pulleys K N are located a suitable interval apart to accommodate the clutches between them, and any approved mechanism (not shown) is employed for establishing and interrupting operative connection between the companion clutch-members. Hence, by the construction just described, it will be observed that the shovel-proper or dipper is thrust in or out according as pulley K or pulley N is operatively connected with shaft L.

What I claim is In an excavating-machine, the combination with the shovel or dipper-arm, and the boom or crane that carries the shovel-proper or dipper, of a continuous chain attached at 01pposite ends to opposite ends, respectively, of the shovel or dipper-arm, guide-sheaves or pulleys suitably supported from the crane or boom, in suitable proximity to the shovel or dipper-arm and a shaft adapted to rotate continuously in one direction, two pulleys loosely mounted upon said shaft, a clutch for each of said loosely mounted pulleys for establishing operative connection between the re spective pulley and the supporting-shaft, an idler supported in suitable proximity to said clutch-member-bearing-pulleys, and the aforesaid chain leading from its upper point of attachment to and under one of the aforesaid guide-sheaves or pulleys, thence into operative engagement with one of the clutchmember-bearing-pulleys, thence to and over the idler, thence into operative engagement with the other clutch-member-bearing pulley, thence to and over the other of the aforesaid guide-sheaves or pulleys and thence to its lower point of attachment to the shovel or dipper-arm, all arranged and operating substantially as set forth.

In testimony whereof I sign this specification, in the presence of two witnesses, this 20th day of January, 1894:.

GEORGE W. KING.

IVitnesses:

JOHN A. WOLFORD, FRED. W. Purses.

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