US357520A - William butlee - Google Patents

Description

(No Model.) 2 Sheets-Sheet 1.

'W. BUTLER, Jr, & W. H. CLARKE. DERRICK FOR USE ON DREDGING MAGHINES.

No.;35'7,5201. "Pat 26d Feb. 8, 1887.

. 1755555. [UV/917127751 M284, gag

(No Model.) 1 2 Sheets-Sheet 2.

W. BUTLER, Jr, 85'. W.H. CLARKE. DERRICK FOR USE ON DREDGING MACHINES.

No. 357,520. Patented Feb. 8, 18 87.

. the class of machines in which dredges, steam- ,of the class above stated.

UNITED STATES PATENT lrricn.

WILLIAM BUTLER, JR, AND WILLIAM H. CLARKE, OF LOOKPORT, N. Y.

DERRICK FOR USE ON DREDGlNG-MACHINES.

SPECIFICATION forming part of Letters Patent No. 357,520 dated February 8, 1887.

Application filed July 22, 1886.

To aZZ whom, it may concern:

Be itknown that we, WILLIAM BUTLER, J12, and WILLIAM H. CLARKE, both citizens of the United States, and residents of Lockport, in the county of Niagara and State of New York, have invented certain new and useful. Improvements in Derricks for Use on Dredging-Machines, of which the following is a specification.

Our invention relates to improvements in shovels, derricks, and the like are embraced, which embody a swinging boom, crane, arm, or table; and it has special reference to swinging derricks or derrick, being used in connection with the boom or crane of the dredge, said derricks or derrick being built on and forming part of the complete dredge, in place of using a separate and distinct derrick placed on trucks, for which a track has to, be laid on the ground at the side of the out being made by the dredge, for which work an extra gang of men is employed, and in many places a sort of trestle has to be built to support the track; also, by our invention, when the dredge is moved ahead for making another cut the derrick is moved with it and at the same time, as the derrick or derricks form part of the dredge. Such moving ahead by the old method necessitated two gangs of men, one for the dredge and another for the derrick. In some classes of work a separate derrick cannot be used. In Very many such cases the use of our invention would materially lessen the cost of the dredging being done.

In the drawings we represent our invention as applied to a dredging-machine. It is, how ever, applicable also to the machines gener'all y The same letters refer to the same parts in both the figures.

Figure 1 represents a side elevation of the invention. Fig. 2 represents a plan of the same.

A is the dredge hull or float.

B is the boom or crane.

O is the dipper-handle, and D is the dipper or bucket.

E is the A-franle for supporting the boom.

F F E are the anchors or spuds for holding the machine to its work.

Serial No. 208,893. (No model.)

G G G are the anchor-slides for guiding the anchors, which may also be utilized as part of frame to support bearings b b of derrickmast H.

I I are the derrick-booms supported by the guys a a a a.

.TJ are the swinging circles, around which a chain or wire rope,h h, is passed and made fast to said circle, and then led back to the swinging drums, which form part of the inside machinery placed, as desired, in the hull.

K K K are braces for the purpose of supouter end of the derrick-boom, as shown on g V drawings, the other end passing over sheaves to the winding-drum located in the machineryroom of the dredge. It will be understood that as this chain is wound on the windingdrum the box f is raised vertically, and as the chain is unwound or allowed to run from the winding-drum the box f is lowered vertically.

The swinging circles J J are circles or segments of circles built of wood or iron, and are used to spread the swinging chains h it apart from the center lines of booms,in order that a greater purchase may be obtained tb swing said booms. The swinging chains h it pass along the outer circumference of the circles on their way to the winding-drums inside the dredge. V

The operation of our invention as applied to a dredge is substantially as follows: The dipper D is lowered and brought into position to commence a cut of the depth desired, and is then drawn forward and upward by means of the hoisting-chain e and machinery (not shown) until it is raised above the surface of 100 the water. It is then swung round to a position convenient for dumping the load into the derrick-box f, which has in the meantime been lowered into a convenient position for receiving its lead. The derrick-box is then raised by means of the hoisting-chain g and machinery in the hull (not shown) high enough to clear any obstructions there may be in the way. The der rick-boomI is then swung by means of the chain h around the swinging circle J and machinery (not shown) to the place it is desired to dump the load 011 the bank. Theloaded box is then dumped and returned to its position to receive another load, which the dredge proper has dug in the interval.

XVe do not limit ourselves to the details of construction shown and described, since it will be obvious to all who are familiar with this art that they may be somewhat departed from and yet our invention be employed.

Havingvdescribed our invention,we claim That improvement in derricks for use on dredges comprising a swinging boom carrying a scoop, in connection with a supplementary swinging boom or derrick mounted on the same support and carrying a receptacle adapted to receive the load from the scoop and convey and deposit it, whereby the reach of the first-mentioned boom is greatly increased, substantially as described.

Signed at Lockport, in the county of Niagara and State of New York, this 19th day of July, A. D. 1886.

WILLIAM BUTLER, JR. \VM. Pl. CLARKE. Witnesses:

ROBERT COOHRAN, IRVING M. Jones.

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