US392858A - Dredging-machine - Google Patents

Description

(No Model.) 2' Sheets-Sheet 2 J. G. FALCON.

DREDGING MACHINE. No. 392,858. Patented Nov. 13, 1888.

F In ven'for.

WZ' Zn eases:

UNITED STATES PATENT OFFICE.

JOSEPH G. FALCON, OF CHICAGO, ILLINOIS.

om-zoeme- MACHINE.

SPECIFICATION forming part of Letters Patent No. 392,858, dated November 13, 1889.

Application filed February 20, 1887. Serial No.264,680. (N0 model.)

To. aZZ whom it may concern:

Be it known that I, JosEPH G. FALCON, a citizen of the United States, and a resident of Chicago, county of Cook, and State of Illinois, have invented new and useful Improvements in DredgingMachines, of which the following is a specification, reference being had to the accompanying drawings, (two sheets,) forming a part of this specification.

Figure 1, Sheet 1, is a side elevation of a dredging-machine in which is embodied my invention; Fig. 2, an enlarged side elevation of the drum, which isapart of the mechanism for adj usting the scraper to the depth required; Fig. 3, an enlarged end elevation of the drum with lever and spiral-band attachment; Fig. 4, Sheet 2, an enlarged front end view of the dredge shown at Fig. 1, the drum being omitted, the better to show the other parts.

The purpose of this invention is to provide suitable mechanism in connection with a suitable scow for leveling the beds of streams and sinking such beds in places and dumping the earth in the water to obviate the use of a mudscow.

Thisinvention consists, in brief, in a dredging-scraper which is made inflexible as against the earth to be removed, and which is jointed, that its cutting-edge may be brought forward and upward to discharge the load at the back portion thereof, a cable being employed to give a forward movement to the scow and to raise the scraper, and another cable being employed to dump the scraper and draw back the scow. Only one engine is employed to operate both cables.

A represents the scow, which is suitable to carry the framework and mechanism; and R P B 10 Q Q is the frame-work, which is attached to the scow and supports the mechanlsm.

T T are the shears, to which are attached the racks U. To the lower ends of the shears is jointed the scraper G by means of the shaft H. The scraper consists of a horizontal lower cutting-edge, D, back E, and sides V. The

racks U mesh in double pinions W on the ends of shaft 2 and in double pinions X on a shaft, 3, shaft 2 having bearings on the frame part P P and the shaft 3 bearing on the frame part B R. The drum 4. is affixed to shaft 3, and to the scow A is secured a metal band, 5,

the attaching end of the band being shown at 6, Fig. 3. This band passes spirally around the drum 4, and the other end is fastened to a lever, 7, Fig. 3, and the lever, by means of a box, 8, has a bearing on a shaft, 9, which extends from side to side of two frame-pieces, 10. This construction is such that when the free end of lever 7 is elevated the shears T T will pass down by their gravity. A cable, L, is attached to a sheave, I, passes up and over a sheave, N, thence down under sheave I, up Ward and over sheave M, and thence forward to the operating-engine, the attaching end being shown at 12. A cable, J, is attached by means of a chain, F F, to the lower front corners of the scraper and passes up and over sheave K, back and over pulley 13, and passes through thesnatch-block11,andisthenbrought forward and around the same drum which drives cable L, the cable being paid out and taken in in opposite directions. The snatchblock 11 is to be secured either to a pile or anchored buoy, and the scow supporting the engine is to be suitably anchored.

Operation: Raise lever 7 and slacken cable L. The scraper will then pass down to the water-bed. Lever 7 then is depressed. The cable L is then drawn forward till the scraper O is filled. Then, if a bar is being leveled, the earth is to be dumped by drawing on the cable J, which dumps the load and pulls the scow A back to its first position; but if the earth is to be carried a distance to be dumped the lever 7 is elevated to first raise the scraper by drawing on cable L to the position shown at Fig. 1. Dotted lines 14 show the scraper as when cutting the earth. 15 shows the water line.

I claim and desire to secure by Letters Patent- The scraper C and shears T U, jointed together by the shaft H, in combination with drum 4 and the band 5, wound spirally around it and attached to the scow A at one end, and the lever 7, attached to the other end of the band, the pinions W X, the sheave-blocks I N M K, snatch-block 11, and cables J L, as and for the purpose specified.

JOSEPH G. FALCON.

Witnesses:

G. L. CHAPIN, HIRAM A. SMITH.

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