US1658873A - Loading device - Google Patents

Description

Feb. 14, 1928.

.J. YOUNKMAN ET AL LOADING DEVICE Filed Jamze. 1927 2 Sheets-Sheet l 'U" 31142-0 l cfa/liz 15u/z man l .MEQ/gif Stroll we Feb. 14, 1928. 1,658,873

J. YoUNKMAN ET AL LOADING DEVI CE @not we Patented Feb. 14, 1928.

. u.N1TED1ysTATI-;s

. JOHN YoUNK-MAN AND GEORGE w. HARGETT, Carnon-ENCE, KANSAS.

LOADING. DEVICE.

, applicati@ inea kJanuary 29, i927. serial No. `164,599.k

This invention relates V to new andfuseful improvements in loading devices, andv particularly to ldevices forloading trucks.

One object is to provide vaI device of this character which is mountedy on a truck, and which is operated to lift an object from the ground and deposit such object on the truck, by. a single operating mechanism.

Another object is to provide a device of this character which is simple in construction, durable and efficient in operation, and which is automatic in its movement to place a lifted objectfabove a truck.

l Other objects and advantages will be apparent from the following description when taken in connection-with the accompanying drawings.

ln the drawings:

Figure 1 is a side elevation of the loading device, mounted on a truck, and in position to lift an object from the ground.,

Figure 2 is a side elevation of the device, showing the parts in the position assumed when the object lifted is suspended over the truck. v

Figure 3 is atop plan view of the device, in the posit-ion of Figure 1. n

Figur-e 4 is an enlarged vertical sectional detail view on the line lf--et of Figure 3,

showing the pull rope brake.

Figure 5 is a longitudinal sectional view through one of the slidable braces.

Referring particularly to the accompany ing drawings, 10 represents the plat-form of an automobile, or other truck, and 11 the cross sills thereof, these sills projecting beyond the sides of the platform, as clearly shown in the drawings. f

Pivotally connected at their lower ends to the projecting ends kof the rear sill 11, are

the upwardly and inwardly converging sup-` porting posts or upright-s 12. Disposedv transversely of the upper ends of the posts 12, and having its ends extended downwardly, into the said upper ends of the posts, is a shaft 13, on which is supported a. large giooved pulley 111. rlhe horizontal portion of the shaft 13, at opposite sides ofthe pulley 1/1, is disposed through the eyes 15, on the upper ends ofthe tubular braces 16. Movably connected to 4each of the projecting ends of the front sill 11 is the lower end of a U-shaped member 17, the closed end of which is slidably disposed in the lowerend of one of the tubular braces 16, a bolt 18 being disposed through the brace, and between the legsof the rbjolt so that bight of `said bolt will engage therewith,y to limit the outward sliding movement of thebrace and bolt, with respect to each other. Encircling each bolt, and resting onthe projecting lend of the said sill, is a strong coil buffer spring 19," against which the lower end of vthe tubularbrace engages, when the upper structure swings inwardly over the truck platform, as will be more clearly described hereinafter.

Mounted on the shaft 13 is a frame 20, and suspended on the rear end thereof is a yoke 21, to which is connectedV one end of a rope 22. This rope passes around or through a pulley block 23, said block being adapted to be engaged with an object to be loaded'onto the truck. The rope then passes upwardly and over the large pulley 111 and thence forwardly and downwardly, where it is secured to, and adapted to be wound on the drum 24. After passing over thelarge pulley 14, the Vrope passes through the channel 25, of the frame20,jand beneath a cam member' 26, said cani member being mounted on a shaft 27 whose end projects beyond the side of the frame and has a radial arm 2S, to which is connected a pull-rope or cord 29, said cord extending to a point convenient for the driver of the truck to reach. The drum24= is provided with a crank handle 30 Vand the ordinary pawl and ratchet checking means 31.

In the operation of the device, the truck is backed up to the place from which the articles to be loadedV are to be obtained. The upriglits or posts 12 are swung so that they extend beyond the rear end of the truck. The block 23 is lowered into position to permit the engagement thereof with the article to be lifted. The operator then rotates the crank of the winding drum, which elevates the article and the block 23. When the article is above the level of the platfcrrnfofv the truck, the operator pulls the cord 29, whereby to force the cam into engagement with the rope 22, and thus prevent any further movement of the rope around the pulleys. Further rotation of the drum causes the rope to exert rearward pull on the upper ends of the posts 12, with the result that such posts will swing inwardly over the truck, while at the same time the braces will properly telescope, until the tubular members 16 engage Awith the springs 19, causing t-he compressionthereof, and the stopping of the lrearward movement of the device, without jar or jerk. This places the article directly above the platform of the truck, so that Jthe operator simply releases his hold on the cord so that the Cam is rocked out of engagement with the rope. The article can then be easily lowered to the platform of the truck.

What is claimed is:

A. truck loading device comprising a support mounted on the truck for swinging movement into and out of position over the truck, telescoping braces between the support and truck, springs between the braces and truck, and a lifting means on the support including a pull rope and means for `11 stopping the pulling action of the rope upon the load at a. predetermined point whereby the initial movement of said rope elevates the load andthe final movement of said rope swings the support inwardly over the truck.

In testimony whereof, we aiiiX our ysignatures. f

JOHN YOUNKMAN.

GEORGE W. HARGETT.

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