US1485631A

US1485631A - Dumping device

Info

Publication number: US1485631A
Application number: US547721A
Authority: US
Inventors: William C Shea
Original assignee: Individual
Current assignee: Individual
Priority date: 1922-03-29
Filing date: 1922-03-29
Publication date: 1924-03-04
Anticipated expiration: 1941-03-04

Description

March 4: 19240 1,485,63H

Y W. C. SHEA DUMPING DEVICE Filed March 29. 1922 Patented Mar. 41, I924.

WILLIAM C. SHEA, OF PETALUMA, CALIFORNIA.

DUMPING DEVICE.

Application filed March 29, 1922. Serial No. 547,721.

To all whom it may concern:

Be it known that I, WILLIAM C. SHEA, a citizen of the United States, and a resident of Petaluma, county of Sonoma, and State of California, have invented a new and useful Dumping Device, of which the following is a specification.

The present invention relates to improvements in dumping devices and is intended to be used principally in connection with trucks having bodies or boxes adapted to dump their load, such as gravel for instance, on being lifted at one end. It frequently happens in dumping devices of this character that even though the front end of the body or box is lifted a portion of the load will stick to the bottom and to the sides and the edges of the box, and has to be removed by auxiliary means. If this remaining portion of the load is removed by hand with the aid of such tools as may be at the disposal of the operator it takes considerable time, and thereby detracts substantially from the advantages gained by the use of an automatic dumping device. It is the object of the present invention to provide auxiliary means for a box of the character described which will clean the same thoroughly during the dumping operation.

With this object in view I have illustrated the preferred form of my invention in the accompanying drawing, in which Figure 1 shows a side elevation of the rear end of a truck having a box thereon adapted to be lifted at the front end and having my device attached thereto; Figure 2 a similar view of the same truck showing my device in a slightly modified form; Figure 3 a perspective detail view of my device; Figure 4 a sectional detail view of a drum and its driving means; Figure 5 a side elevation of the same, and Figure 6 a perspective detail view of my device in the modified form used in Figure 2.

The body of the box 1) is shown in the drawing as resting on the frame (2), the rear end of which is pivotally secured to the main frame (3) as shown at (4). In front of the box there is supported on the main frame (3) a suitable means for lifting the front end of the box when it is desired to unload the same. This means is shown in the drawing as comprising a hydraulic ram (6), the plunger (7 of which carries a pulley (8) over which is passed a cable (9), one end of which is secured to the frame of the ram while the other end is led underneath the body and secured to the underside of its supporting frame (2) in any suitable manner, as for instance, by the bracket (11). The device thus far described is commonly used at the present time and no novel features are claimed on the same. Its operation will be easily understood. \Vhen the plunger (7) is forced upward the cable (9) will lift the front end of the box and the loose gravel within the box will slide out of the same rearwardly, a hinged rear gate (12) opening at-the same time.

My attachment in its principal features comprises a scraper (13) and a support 14) hingedly connected thereto, as at (16), and pivotally supported above the box as at (17) so as to allow the scraper (13) to plunge forward when the front end of the box is lifted sufficiently high, and to thereby thoroughly clean the box. The scraper is shown in the drawing as consisting of a plate co-extensive in width with the box and lying flat on the bottom of the same normally close to its rear edge. The support (14) is also preferably made of a plate co-extensive with the width of the box so as to scrape the sides of the same when plunging forward. In the form shown in Figure 3 the plate (14) is pivotally supported on a horizontal rod (17) mounted above the box between two standards (18). The plates (13) and (14) are hingedly connected to each other so that the hinge normally lies against the rear edge of the box. Springs (19) are introduced tending to force the plates apart so that the whole device tends to straighten out as the plate (13) plunges forward.

Special means are provided for the return of the scraper to its original position when the front end of the box is lowered again. These means comprise a cable (21) having one end attached to an eye (22) secured to the scraper near the hinge and having its other end fastened to a drum (23) adapted to be actuated by a gear wheel (24) supported co-axially with the drum in brackets (26) secured to the front of the frame (2). The gear wheel (24) is engaged by a stationary rack (27) and caused thereby to rotate when the box is lifted or lowered. The rotation of the gear wheel is transpivotally secured to the side of the gear wheel as shown at (31), the ratchet (32) forming an integral part of the drum (23) and a spring (33) holding the pawlc'i'n-enga-gement with the ratchet.

in operation it will be seen that when the front end of the box is lifted the gear wheel will be rotated to'the' right as viewed in Figure 2. or to the left as viewed in Figure While rotating in this direction it will not affect the:drun1 and the latter therefore will not begin to unwind its cable until the weight of the sc'aper causes the same to plunge forward. This will happen only afterthe front end of the box has been lifted through a ,consit'lerablc distance. While plunging forward the scraper cleans the box of all of its load and the box is then allowed to fall back to itsoriginal position. lVhile doing this'the gear wheel (24) again en-Y gages the rack'(1i') and iscaused thereby to rotate in theopposite direction. that is to the left' as'viewed in Figure 2, and to the right as viewed in Figure "lhis rotary motion is transmitted to the drum by means of the pawl and ratchet arrangement shown in Figure 5. and the drum in winding up the cable pulls the scraper back to its original position.

- In the-device describedhereinabove the support for the scraper is stationary and thescraper itself only cleans the front part of the box, which under'ordinary circumstances is all that is required since ordinarily the load has a tendency to lodge in the front corners only, the rear end of the box being kept scoured by the constantly passing gravln case,

el. or whatever the load may be. however, it is desired to have the cleaning process extend through the whole box, my modification shown in Figure 2 may be used to advantage. In this form the stationary supports (18) are replaced by a carriage (36) at either end of the rod (LT), the carriages being adapted to ride on the side members (37) of the box. When constructed like this the scraper is allowed to slide forward throughout the length of the box, its forward motion being stopped only by lugs (38) secured near the rear end of the box and preventing the carriages from going too far. The construction of all the other members of the modification shown in Figure 2 is substantially the same as that of the device shown in Figure 1, it being nec essary of course to provide a longer cable and to increase the size of the drum relative to the size of the gear wheel.

I claim:

.1. Cleaning means for a box adapted to be emptied by the lifting ofone end, romprising a horizontal plate (o-extensive in .width with the bottom of the box, a vertical member hingedly connected thereto with the hinge lying against the lower edge 'of the box and a pivotal support for the vertical member allowing the latter and the plate to plunge forward when the end of the box is lifted.

2. Cleaning means for a box adapted to be emptied by the lifting'of one end, compris-' ing a horizontal plate co-extensive in width with the bottom of the box, a. vertical plate co-cxtensive with the width of the box hingedly connected thereto with the hinge lying against the lower edge of the box and a pivotal support for the vertical plate al-' lowing both plates to plunge forward when the end of the box' is lifted.

3. Cleaning means for a box normally dis posed horizontally and adapted to be emp-" tied by the lifting of one eml,"comprisi1ig scraping means for the bottom of the box, a hinged support for the sanie allowing the scraping means to plunge forward when the end of the box is lifted, and means'for auto matically returning the' scraping imeans when the box returns to a horizontal position.

A et..Cleaning means for a box adapted to be'emptied by the liftingof one end, com prising scraping means forthe bottom of the box, a hinged support for the same allowing the scraping means to plunge forward when the end of the box is lifted, and' means for automatically returning the scraping means when the box returns to its original position, comprising a drum supported on the box, a 'cord secured to the scraping means wound on the drum and means for rotating the drum when the box' returns whereby the scraping means is returned.

5. Cleaning means for a box adapted to be emptied by the lifting of one end comprising scraping means for the bottom of the box, a hinged support for the same al lowing the scraping means to plunge forward when the end of the box is lifted, and means for automatically returning the scraping means when the box returns to its original position, comprising a drum havin a gear wheel associated therewith supported on the box, a cord secured to the scraping means wound on the drum and a stationary rack engaging the gear wheel when the box returns for rotating the drum whereby the' scraping means is returned.

WILLIAM C. SHEA.