US1824419A

US1824419A - Sand spreading mechanism

Info

Publication number: US1824419A
Application number: US261732A
Authority: US
Inventors: George C Abbe
Original assignee: AMERICAN ROAD MACHINERY COMPAN
Current assignee: AMERICAN ROAD MACHINERY COMPAN; AMERICAN ROAD MACHINERY COMPANY Inc
Priority date: 1928-03-15
Filing date: 1928-03-15
Publication date: 1931-09-22
Anticipated expiration: 1948-09-22

Description

Se t. 22 1931. G c, BBE 1,824,419

SAND SPREADING MECHANISM Filed March 15, 1928 2 Sheets-Sheet l 4rro/mosya.

Sept. 22, 1931. c, ABBE 1,824,419

SAND SPREADING MECHANI SM Filed March 15, 1928 2 Sheets-Shem- 2 grra/iwzys.

Patented Sept. 22, 1931.

UNITED STATES PATENT OFFICE GEORGE C. ABBE, OF KENNETT SQUARE, PENNSYLVANIA, ASSIGNOR T0 AMERICAN ROAD MACHINERY COMPANY, INC., 0F KENNETT SQUARE, PENNSYLVANIA, A COR- PORATION OF DELAWARE SAND SPREADING MECHANISM Application filed March 15, 1928. Serial No. 261,732.

This invention relates to a sand spreading mechanism which consists of a bin and spreading means and which is provided with a feeding means for feeding sand or the like from the bin to the spreading means.

In machines of this character heretofore used, the bin has been mounted either on a truck chassis or on a trailer and a rotating spreader to which sand is fed from the bin has been provided to spread the sand over a road or other surface which it is desired to render non-slippery. In these machines it has been customary to provide a conveyor or the like for supplying sand from the bin to the spreader. The spreader and conveyor have been operated at constant speeds, so that the only method of effectively changing the amount of sand distributed over a given surface consists in changing the speed of the truck or tractor in the ordinary manner. This, however, does not make for the highest efliciency, since the time necessary to cover a surface is dependent upon the concentration of sand applied.

It is accordingly the object of the present invention to provide a sand spreading mechanism in which the distribution of the sand may be varied independently of the speed of the truck or the speed of the spreader, which latter speed determines the distance to which the sand is thrown.

While in the following description the spreader is described as applied to the distribution of sand, it will be clear that other materials, for example, cinders or ashes may be applied by the sand mechanism.

In the drawings:

Fig. 1 is a diagrammatic sectional elevation of a part of the improved mechanism;

Fig. 2 is a plan view partly in section of the improved speed changing device; and

Fig. 3 is a side elevation of the, subject matter of Fig. 2.

There is indicated at 2 the chassis of a truck or trailer which carries a bin 4 adapted to receive sand or other material which it is desired to spread. Extending longitudinally of the bottom of the bin 4 and also through an extension channel 6 thereof is a screw conveyor 8 formed upon a tubular shaft having suitable hearings on the chassis. Extending through the tubular conveyor shaft is a second shaft 10 which is similarly provided with bearings on the frame. The forward end of the screw conveyor is provided with a sprocket wheel 12. The forward end of shaft 10 is similarly provided with a sprocket wheel 14.

To drive the conveyor on shaft 10, apower shaft 16 is provided which may be driven from a suitable source of power, not shown, which may be either the engine which serves to drive the truck or an auxiliary engine or motor. Splined on shaft 16 is a clutch member 18 provided with

engaging members

20 and 22. Mounted for free rotation upon shaft 16 is a clutch member 24 adapted to cooperate with engaging member 20 and having a hub which carries a sprocket wheel 26. A similar clutch member 28 engaging member 22 is also mounted for rotary motion about shaft 16 and carries a sprocket wheel 30.

Sprocket wheel 26 is connected with a sprocket wheel 32 by means of a suitable chain, while sprocket wheel 30 is similarly connected with asprocket wheel 34, sprocket"

wheels

32 and 34 being mounted on a countershaft 36 having suitable hearings in the frame. Countershaft 36 also carries a sprocket wheel 38 connected by a chain 40 to, sprocket wheel 12. W

A sprocket wheel 42 fixed on shaft 16 is connected by a chain 44 with sprocket wheel 14.

Clutch 18 may be manually operated to engage either

clutchmembers

20 and 24 or

clutch members

22 and 28 by means of a lever 46 which may be manual y operated to move link 48 and lever 50 to slide clutch member 18 longitudinally along shaft 16.

At the rear end of the bin there extends downwardly a chute 52through which sand.

may be delivered by the screw conveyor from channel 6 into ring 56 of spreader 54 carried by a vertical shaft 58. Spreader 54 consists of a plate having outwardly extending vanes which serve, during the rotation of shaft 58, to throw off the sand and thus spread it about the road. A bevel gear 60 is mounted on the P upper end of shaft 58 and meshes with the corresponding bevel gear 62 secured to shaft 10.

From the above description, it will be clear that if shaft 16 is driven at constant speed, spreader 54 will likewise be driven at constant speed, so that thesand will be distributed over a given surface of road. By increasing or decreasing the speed of counter shaft 36 the extent of distribution of the sand may be regulated.

The concentration of the sand over a given area may be readily regulated not only by changing the speed of the truck but also independently of the speed of the truck by means of the clutch mechanism described, through which shaft 36 may be regulated to drive through sprocket wheel 32 or sprocket wheel 34. By the means described, it is unnecessary to slow down the truck in order to secure a more concentrated distribution of sand or other material. 7

What I claim and desire to protect by Let ters Patent is:

1. A sand spreading mechanism comprising a bin, rotary sand spreading means, a screw conveyor for feeding sand from the bin to the spreading means, a power driven shaft, connections between the shaft and spreading means, a plurality of clutch members, connections between each of the clutch members and the conveyor, and a manually controlled clutch member rotating with the shaft and selectively movable to engage either of the aforementioned clutch members whereby the speed of the conveyor may be adjusted relatively to that of the spreading means.

2. A sand spreading mechanism comprising a bin, rotary sand spreading means, a screw conveyor for feeding sand from the bin to the spreading means consisting of a sleeve carrying a screw blade, a shaft extending through the sleeve and connected to the spreading means, a power driven shaft, means connecting the first mentioned shaft 'with the power driven shaft, and manually controllable connections between the power driven shaft and the conveyor whereby the speed of the conveyor may be varied relatively to that of the spreading means.

In testimony of whichinvention, I have hereunto set my hand, at Kennett Square, Pa., on this 1st day of March, 1928.

,- GEORGE C. ABBE.