US678108A - Unloading device. - Google Patents

Description

. U w. 9 I u l. d e t n e t a P N 0 S N H 0 J P .r 8 m 7 6. 0

UNLUADING DEVICE.

(Application filed Apr. 18, 1999.

(No Model.)

Inventor.

' \N'innesses.

Attorneyzfi UNITE STATES? PATENT OFFIC FRANK P. JOHNSON, OFWALTHAM, MASSACHUSETTS.

UNLOADING DEVICE.

SPECIFICATION forming part of Letters Patent No. 678,108, dated July 9, 1901.

Application filed April 18, 1899- To all whom it may concern.-

Be it known that I, FRANK P. JOHNSON, of

the city ofWaltham, county of Middlesex, Commonwealth of Massachusetts, have invented a new and useful Improvement in Breaking-Out or Unloading Devices, of which the following is a full, clear, and exact description when taken in connection with the accompanying drawings, which form a part thereof, and in which Figure 1 represents a section of a vessel and in side elevation a breaking-out or unloading device embodying myinvention; Fig. 2, a vertical section of my device on lines 2 2 of Fig. 1; Fig. 3, a vertical sect-ion on lines 3 3 of Fig. 2, and Fig. 4 a similar view of another form of the device.

In all figures similar letters of reference represent like parts.

This invention relates to devices for unloading cargoes laden in bulk from vessels or other receptacles. In unloading vessels of liquid or semiliquid cargo-such as grain, coal, sand, pitch, molasses, oil, and other similar substancesladen in bulk a considerable portion of the expense is incurred in unstowing such a portion that the operators may work on a level or a smooth surface and easily unload the remainder.

This invention has for its object the production of a device for readily accomplishing this breaking out of the cargo; and it consists of the combination of parts more fully set forth hereinafter.

Referring to the drawings, the parts desig-' nated by the letter A represent the section of a vessel in which the cargo B of coal or other substance is laden in bulk.

0 represents a removable bottomless hollow box or receptacle forming an inclosure in the vessel, from which the cargo is excluded. The box or receptacle 0 may be formed in sections 0 and 0 as shown in Figs. 2 and 3, so that it may be built up to the desired height. On the sides of the box or receptacle areopenings E, permitting egress of the cargo into the inclosure, and the openings are closed when desired by slides or gates or valves F, controlled or operated by rods G, which may be jointed, as shown at H, to correspond with the height of the box or receptacle O. Inclined chutes or guides are shown on the inside of the openings E, and pivoted to their inner ends may be extension-chutes Serial No. 713,521. (No model.)

K, which are swung on their pivots by rods chutes K are turned up to the position shown in Fig. 3 on the right to prevent egress into the inclosure, and the cargo is then filled in about the box, Fig. 1. When it is desired to break out the cargo, the slide or gate F is pulled away from one of the openings or the valve opened to allow the cargo to pass through the opening into the bucket. In case the extension-chutes K are used they are lowered into the position shown on the left, Fig. 3. By opening the various gates or extension-chutes all that part of the cargo designated by the letter B. is gradually allowed to enter theinclosure, from whence it is hoisted by the bucket or other suitable means. When the cargo is broken out sufficiently, the box C may be removed and a level or smooth floored spot in the midst of the cargo is provided, from which the operators may work on the remaining portion of the cargo. I am aware that wells or shafts have been permanently built into vessels for use in unloading cargoes, and I therefore do not claim, broadly, the idea of a shaft or well for such a purpose. 1'

Having now described my invention, what I claim, and desire to secure by Letters Patout, is-

The combination with a vessel A; of a removable bottomless shaft 0 adapted to rest on the flooring of said vessel, so that the cargo may be placed about it, and provided with openings E in its sides and gates for said openings, said shaft being adaptedto be removed when the cargo is broken out above said openings, substantially as described.

In witness whereof I have hereunto set my hand this 8th day of April, A. D. 1899.

i FRANK P. JOHNSON. Witnesses:

SAMUEL H. FISHER, ELIZABETH K. PENDLETON.

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