US1088031A - Dipper-dredge. - Google Patents

Description

G. H. LUTZ.

DIPPER DREDGB.

APPLICATION FILED OUT. 30, 1912.

1,088,031 Patented Feb. 24, 1914,

GEORGE H. LUTZ, OF DAHLONEGA, GEORGIA.

DIPPER-DRED GE.

noeaosi.

Specification of Letters Patent.

Patented Feb. 24:, 1914:.

Application filed October 30', 1912. Serial No. 728,715.

'1 0 all whom it may concern:

citizen. of the United States, and a resident of Dahlonega, in the county of Lumpkin and State of Georgia, have invented certain new and useful Improvements in Dipper- Dredges, of which the following is a specification.

This invention relates to dredges operating upon the principle of a scoop or dipper for raising material, and particularly to such dredges as are used for raising material from the bed of a body of water.

It is customary to provide dredging dippers with movable bottoms or rear ends which can be opened when the dipper reaches the dumping point for the purpose of discharging the contents. But it is difficult to effect a tight closure or" dippers of this class, even by the use of expensive packings or gaskets, and impracticable to maintain tight closures without repeated renewal of the packings. The result is that there is more or less leakage in the operation of the dredge and when used in working gold bearing deposits, the finely divided values largely escape with the leakage.

The object of the presentinvention is to provide an absolutely tight dredging dipper and means for conveniently operating the same, both for gathering and discharging the material.

In carrying out the invention, the dipper is made with its side and end walls permanently and hermetically united so that it will hold all material which may enter it, up to its full capacity, without leakage; and to provide for dumping, the dipper is mounted and equipped to be rotated upon an arms.

The invention will be fully understood upon reference to the accompanying drawing, in which,

Figure 1 is a general view of a dredge in which my improvements are embodled; and Fig. 2 is a detailed view of the dipper, and a portion of its mounting.

1 represents the dipper which has 1ts *rear end wall 2 permanently and hermetlcally united with its side walls 3 so that when the dipper is elevated, the contents W1ll not leak out. It the dipper is to be operated 1n a more or less vertical position, as suggested in Fig. 1, it will also have a forward wall, which will likewise be hermetically unlted with the side walls 8 and be suitably constructed to gather the material by scooping action. The dipper 1 is conveniently mounted upon a beam 5 for the purpose of directing its movements and is suitably connected with the operating cable 6 for imparting the scoopmg and elevating movements to the dipper. In order that the dipper may be delivered of its contents, after it has been ra sed and swung to the dumping position, it is mounted to rotate upon an axis, preferably extending longitudinally of the dipper. This is conveniently accomplished by providing the dipper with a rotating shank 7 mounted in bearings 8 upon the beam 5, and in order that the necessary rotation for dumping may be imparted to the dipper at Wlll, it is provided with rotating'means, such for instance as the gear wheel 9 on the shank 7 and the driving pinion 10. The latter may be conveniently driven through the means of a shaft 11, extending from any suitable source of power, such for instance as the prime mover 12 in the form of an electric motor. In the illustrative embodiment, the motor 12 is mounted on the beam 5 and drives the shaft 11 through the medium of the gearing 13. To avoid interfering with the rotation of the dipper 1 by the driving connection 6, the dipper is supported by said driving connection, through the medium of the endless belt 14, preferably in the form of a chain, passing through the pulley 15 and around the dipper 1, so that the dipper may freely turn when desired. To confine the chain against displacement upon the dipper, when the draftis more or less in the direction of the axis of the dipper, the dipper is equipped with curbing 16, conven iently provided from angle-iron.

With the dipper constructed and operated as above described, the fine material, in which the values mainly lie in gold dredging, for instance, is entirely saved.

I claim 1. In a dredge, a dipper having hermetically united confining walls, a rotary mounting for said dipper comprising a non revoluble oscillating beam, an operating connection for oscillating said beam with the dipper and a sling through which the operating connection supports the dipper and which permits rotation of the dipper relatively to said operating connection, said rotary mounting being carried on one side of said beam, said operating connect-ion having a pulley around which said sling passes, and said dipper having an external. curb means comprising an endless belt surrounding the dipper, a pulley for said belt on said operating connection, and a confining curb for said belt on said dipper permitting the bend of said belt in the vertical plane of said carrier.

The foregoing specification signed at Dahlonega Ga. this tent-h day of August,

GEORGE H. LUTZ. In presence of two witnesses: WM. S. HUFF, H. D. GURLEY.

Copies of 1:111: patent may be obtained for five cents each, by addressing the Commissioner of Patents. Washington, D. G.

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