US1320350A - Carrying and dumping- box - Google Patents

Description

F. SUMMERS. CARRYING A'ND DUMPING BOX. APPLICATION FILED JUNK-I21. 1919.

Elwumtoz THE COLUMBIA PLANSU RXPH C0, WASHINGTON, n. c.

Patnted Oct. 28,1919.

2 SHEETSSHEET l- F. SUMMERS. RRRR YI'NG AND DUMPING BOX.

Patented Oct. 28, 1919.

2 EEEEEEEEEEEE 2 lTE ST CARRYING AND DUMPING BOX.

Specification of Letters Patent.

Patented Oct. 28, 1919.

Application filed June 21, 1919. Serial No. 305,800.

a box of this character intended for use in loading and unloading material.

An object of the invention is to provide a box which may be built of wood rein forced with metal, or of metal, and which is so slung from carrying cables that shifting of the load cannot causethe box to dump, thus making the box particularly adaptable and safe for use in hoisting and swingingcoal, dirt, and the like to be loaded into wagons, on shipboard, and in other connections where workmen are likely to be beneath the load orwhere accidental dumping of the same would cause injury to the structure therebeneath or the material would be lost.

A further object resides in so constructing the box that the. bottom thereof is made up of tWo doors, hinged at opposite edges of the box, and which: open for dumping to confine the discharge ofmaterial to a limited area, thus adapting it particularly to loadino: into a wagon, aboat hatch, or the like.

et another object is'to arrange the cablesbywhich thebox isslung so that these cables hold the'doors of the box closed and as the load within the box is increased these cables draw with greater tautness to retain thefidoors against opening, the arrangement being such that they cables can be released from the door holding position to leave the doors free to open and to discharge the contents of the box..

With these andiflother objects in View, which will be apparent from the specification, drawings, and claims this invention includes certain novel features of construction and combinations of parts which will now be set forth it In the drawings: p Figure 1 is a view inperspective showing my improved box as the partswould appear when the boxis loaded.

Fig, :2 is a view in side elevation showing the box with the doors thereof released and open to discharge the load.

Fig. 3 is a View in elevation showing a modified arrangement of the cable sling for the box. a

Fig. 4. is a perspective view showing one of the doors, for the box.

Figpois a detail view illustrating one of the cable hooks as carried by thedoors.

In the present practice it is customary, in hoisting and carrying material to be handled from one point to another,to employ a box or skip given a two or three point suspension and arranged to be unloaded by beingtilted to dump the load. Further, buckets having the bottom made as a door, held by a trip latch and to be opened to dump the load, are employed. In the use of either the box or bucket as described there is always the possibility that the load may shift and the contents will be prematurely dumped, and further, with either form of device the sudden dumping of the entire load will place an excessive and breaking strain upon a wagon, a boat .deck, or other structure into or onto which the load is discharged.

To overcome these objections and to provide acarrying and dumping box which will in other respects be more efficiently and effectively used, I propose to arrange a sling mounting which ositively precludes dumping of the load tirough shifting of the weight within the box and to provide dumping doors which will discharge the material gradually thus avoiding undue strain upon the box or the structure to which the material is discharged.

In accomplishing the above objects and purposes, I provide a box body 1, which is made up of wood or metal, of a size to best accommodate the material to be handled. This body is open at boththe top and the bottom, and if made of wood will preferably be reinforced.

Doors 2 and 3, provided with segmental side flanges 4: and 5 and preferably constructed substantially as shown in Fig. 4:, are mounted by hinges 6 and 7 to close the open bottom of body 1. These doors are preferably made to overlap when closed and to have the flanges thereof overlap each other and the sides of the body when the doors are opened, and chains 8 and 9 are connected with-the body 1 1 and with the rounded on their outer edges so that as the box is set down, with the doors open, these doors will swing to the closed position.

On each upper corner of the sides of the body adjacent which flanges i and 5 are disposed sheaves 10 are mounted, and hook brackets 11 are secured on flanges 1 and 5 of the doors 2 and 3. These hook brackets have sheaves 12 mounted in the bends there of, and keepers 13 are hingedly mounted on the bill of each of the hooks. These keepers are pivoted to swing inwardly, as indicated by the dotted lines in Fig. 5, and are made sufficiently long that they will not swing outwardly.

A link or shackle 14: has cables 15, 16, 17, and 18 secured thereto or attached to rings connected therewith, as shown in Fig. 1, and the free ends ofv these cables are carried around sheaves 10 at the four corners of the body of the box. Studs or pins 19 are secured on the sides of the body, centered between and disposed somewhat lower than the sheaves 10, and the ends of cables 15 and 17 are connected with pin 19 on one side of the box, cables 16 and 18 being attached to pin 19 on the opposite side.

In the use of the box, when a load is to be taken, attachment is made through link or shackle 14 to a crane line or other suitable cable or chain and the various cables 15, 16, 17, and 18 are slackened in that portion between sheaves 10 and pins 19 to catch within the hook bracket 11 and bear around sheave 12 of the adjacent flange of one of the doors. Assuming the cables to be arranged and that connection hasbeen made through link 14?, as set forth, a direct pulling strain is exerted by the several cables to retain the two doors in the closed positions, and fine or coarse material can be loaded into the box, the pulling strain upon the cables to retain the doors being proportionately increased as the load is increased. The box thus loaded can be safely hoisted and swung above the heads of workmen or wherever else is desired without danger of dumping or of spilling any part of the load, as the doors will be held in the closed position while the cables are under strain and as the overlapping of the doors and flanges securely closes the bot tom; also, through the four point suspension of the body tilting due to uneven balancing of the load or shifting of the weight is prevented.

In unloading, the box is set down and the several cables are slackened sufiiciently that by raising keepers 13 these cables are removed from engagement within the hook brackets 11, and when the box is again lifted a direct pull from pins 19 around sheaves 10 is accomplished. This direct pull will raise the box, and as the doors are released the weight of the load thereagainst will cause these doors to swing open, as shown in Fig. 2, to the full limit permitted by chains 8 and 9.

When the box is again rested the edges of doors 2 and 3 will-be first to bear and the weight of the body 1 will be suflicient to swing these doors to the closed position, after which the cables are slackened sufliciently to be caught within the hook brackets, keepers 13 guarding against accidental or casual loosening from the hook brackets.

In some instances the box may be used in carrying and dumping material where it will not be convenient to set the same down and slacken up on the cables so that the doors can be released to open, and under these conditions it will be desirable to make use of two separate hoisting cables, one to support the box and the other to control the doors. With this in mind I provide the sling fastening eyes 20 on the sides of the box, and in the uses mentioned a supporting cable sling is connected in these eyes to raise and lower and at all times support the box. The cables connected with link 14 are caught within the corresponding hook brackets and a door controlling cable is attached to this link. By taking in on the cable attached to link 14 the doors are closed and as long as the tension is maintained will be held closed, slacking out on this cable loosening cables 15, 16, 17 and 18 suficiently that the doors can swing to the open position.

In Fig. 8 the main portions of the structure are substantially identical with the parts hereinbefore described, but the cable ends 16 and 18, and 15 and 17 respectively are made as two continuous lengths, the cable being caught within hook brackets 11 to hold the doors closed and studs or pins 19 taking the strain at the central portion of each of these. cables when the doors are released.

While, in the foregoing, I have described specific embodiments, and have mentioned only certain possible modifications, it will be appreciated that my purpose is to provide a carrying and dumping box which will accomplish the objects and overcome the obj ections hereinbefore set forth, in View of which it is to be understood that I do not wish to limit myself to such specific details as herein mentioned, but may resort to any practical modifications falling within the scope of the invention as defined in the appended claims.

I claim:

1. A carrying and dumping box including with a body portion open at the bottom, hinged doors to close said bottom, hook brackets carried by said doors, and sling cables connected at their ends near the top of said box body arranged to be looped and caught within said hook brackets to swing said doors to and retain the same in a close position, said sling cables being provided as the sole support for the box body when caught within the hook brackets and when released therefrom.

2. A carrying and dumping box including with a body portion open at the bottom, a pair of doors each provided with side flanges hinged at opposite sides of said body portion to swing up to close the open bottom thereof and having their flanges interfltting over the remaining sides of the body portion, sheaves mounted at the upper corners of said body portion on those sides over Which said flanges lap, hook brackets secured on each of said flanges, and cables by which said box is slung led around said sheaves and arranged to be caught within said hook brackets to close said doors and retain the same in a closed position as long as tension is maintained on said cables.

3. A carrying and dumping box including with a body portion open at the bottom, a pair of doors each provided with side flanges hinged at opposite sides of said body portion to swing up to close the open bottom thereof and having their flanges interfitting over the remaining sides of the body portion, sheaves mounted at the upper corners of said body portion on those sides over which said flanges lap, hook brackets secured on each of said flanges, cables by which said box is slung led around said sheaves and arranged to be caught within said hook brackets to close said doors and retain the same in a closed position as long as tension i maintained on said cables, said hook brackets constructed to allow removal of the cables therefrom when slackened to free said doors for opening, and means to limit opening movement of said doors.

4. A carrying and dumping box including with a body portion open at the bottom, a pair of doors each provided with side flanges hinged at opposite sides of said body portion to swing up to close the open bottom thereof and having their flanges interfitting over the remaining sides of the body portion, sheaves mounted at the upper corners of said body portion on those sides over which said flanges lap, hook brackets secured on each of said flanges, cables by which said box is slung led around said sheaves and arranged to be caught within said hook brackets to close said doors and retain the same in a closed position as long as tension i maintained on said cables, said hook brackets constructed to allow removal of the cables therefrom when slackened to free said doors for opening, and means associated with each of said hook brackets to retain said cables against other than manual removal.

5. A carrying and dumping box including with a body portion open at the bottom, a pair of doors each provided with side flanges hinged at opposite sides of said body portion to swing up to close the open bottom thereof and having their flanges interfitting over the remaining sides of the body portion, sheaves mounted at the upper corners of said body portion on those sides over which said flanges lap, hook brackets secured on each of said flanges, cables by which said box is slung led around said sheaves and arranged to be caught within said hook brackets to close said doors and retain the same in a closed position as long as tension is maintained on said cables, said hook brackets constructed to allow removal of the cables therefrom when slackened to free said doors for opening, and studs on said body portion to take the full strain of said cables when the same are released.

6. A carrying and dumping box includ ing with a rectangular body portion open at the top and bottom, a pair of doc-rs hinged at opposite sides of said body portion to swing up to close the bottom thereof and provided with side flanges interfitting over the remaining sides of said body portion, sheaves carried at the upper corners of the body portion on those sides over which the flanges lap, studs secured on said sides centered between and somewhat below said sheaves, four cables each having connection with a link and each passed around one of said sheaves and secured to the adjacent stud, and hook brackets mounted on each of the flanges of said doors positioned to catch said cables as the same are slackened around said sheaves.

7. A carrying and dumping box including with a rectangular body portion open at the top and bottom, a pair of doors hinged at opposite sides of said body portion to swing up to close the bottom thereof and provided with side flanges interfitting over the remaining sides of said body portion on those sides over which the flanges lap, studs secured on said sides centered between and somewhat below said sheaves, four cables each having connection with a link and each passed around one of said sheaves and secured to the adjacent stud, hook brackets mounted on each of the flanges of said doors positioned to catch said cables as the same are slackened around said sheaves, the arrangement of parts being such that as tension is applied to said cables these cables draw u to retain said doors in closed positions, keepers associated with said hook brackets to retain said cables against other than manual removal, and means to limit opening movement of said doors when the cables are removed from said hook brackets.

In testimony whereof, I aflix my signature,

FRED SUMMERS.

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

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