US509063A - Automatic wagon-brake - Google Patents

Description

(No Model.)

J, WBNNBERG su' o. LINDSTROM.

' AUTOMATIG WAGON BRAKE.

'Patented Nov. 21, 1893.

` y .Zhi/@wrs l UNITED STATES4 *PATnlSrr OFFICE.

JOHN WENNBERG AND'OLE `LINDSTROM, OF FERTILE, MINNESOTA.

AUTOMATIC WAGON-BRAKE.

SPECIFICATION forming part of Letters Patent No. 509,063, dated November 21,1893. Application filed December 6, 1892. Serial No.`454,230. (No model.)

To @ZZ whom t may concern:

Be it known that we, JOHN WENNBERG and OLE LINDSTROM, both of Fertile, in the county of Polk and State of Minnesota, have invented certain new and useful Improvements in Automatic Wagon-Brakes, of which the following is a specification.

Our invention relates to automatic wagon brakes and the object of the invention is vto provide a brake which will be operated by the back pressure transmitted through the neck-yoke and which, consequently, will be entirely automatic in its action.

To this end our invention consists in the combination with the wheels and the axle, of the hounds, the pole, and levers, bearing brake-shoes, pivoted upon said hounds, said levers being arranged to'be operated by a rod extending forward and connected with the neck-yoke.

Our invention will be more readily understood by reference to the accompanying drawings, forming a part of this specification, in which- Figure lis a plan showing the front wheels,

hounds and tongue of a vehicle and automatic brake embodyingY our invention. Fig. 2 is a side elevation with one of the wheels removed. Fig. 3 is a rear elevation of the same. Fig. 4 is a detailed view showing the meansfor locking the rod upon the tongue.

As shown in the drawings, 2, 2 represent the front wheels of a wagon or vehicle.

3,4 and 5 represent the axle, the sandboard, and thebolster, respectively.

The hounds 6 and the circle 7 are of the usual construction and the pole 8 is secured theretoin the usual manner, and an ordinary rubber iron is also provided. Behind the wheels we provide the two short horizontal levers 10 and 11 provided with the brakeshoes 12 and having slotted inner ends which are connected by the bolt 13. On the back of the circle is the iron strap 14 secured thereto in any suitable manner and 'having the back- Wardly extending ends 15 provided with the curled ends 16 in which the pivot bolts 17 of the levers are secured. Short braces 18 extend between the angle ends 15 and the inner part of the strap 14. These levers are normally held in the position shown by the flat pillow spring 19 having the ends 2O fastened upon the studs 21 projecting from the tops ot the levers. The bow of the spring thus presses against the inner ends of both levers. From the bolt 13 extends the brake rod 22, preferably formed in a loop bent about the kingbolt 23 and extending thence down to a point beneath the tongue where it is coupled by the hinged joint 25 to the rod 26 extending forward to the tongue and having'the shoulder 27 to be engaged by the ring'28 of the neckyoke 29. It will be seen that when a backward pull is exerted Yupon the neck-yoke, as by the backing of the horses in going down hill, the brake-rod will be forcedbackward against the pressure of the pillow spring 19 to straighten the levers and press the brake shoes against the wheels. The pressure exerted upon the draft-rod is greatly increased by the long leverage of the levers which as shown are pivoted near their outer ends.

It is often desired to back the wagon and in order that this may be done `when the team is hitched thereto, and without applying the' brakes, we preferably flatten the rod 26 at 30 and Vprovide therein the hole 3l,which is nor" mally beneath a hole provided in the tongue.

'Before backing the team, the driver, by inserty o Patent- 1. The combina-tion, inangautomaticbrake,

of the front wheels of the vehicle, with the axle `3, the circle "7*, the strap 14 secured to `said circle 7 and having sleeved ends 16, brace 18, the levers 10 and 11 pivoted on said ends 16 and pivotally connected, brake-shoes on said levers, a spring 19 `for normally holding said levers andl brake-shoes out of` engagement with said wheels, and automatic means for forcing said levers andl brake-shoes into engagement with said wheels, as and for the purpose set forth.

2. The combination, in an automatic wagon brake, of the front wheels of the vehicle, with the axle 3, the circle 7, the pole, the metal strap 14 secured to said circle 7 and nhaving IOO 3. The combination, with the front Wheels,

of the hounds and circle, the pole, short 1evers 10 and 11 pivoted on said circle andhaving brake shoes to engage said wheels, a bowspring arranged on said levers, the neck-yoke, and a rod extending therefrom to a pivotal connection With the inner ends of said levers, substantiallyas described and' for the purpose specified.

4. The combination with the wheels, of the Azo hounds and circle, 'the'f pole, brake levers mounted on's'aid circle, means'for normally holding the sanne out of engagement with thel Wheels,"and a brake rod extending from sald levers to the end ofl said pole, said rod pro- 25 .vided with the'hole 30,A and the tongzgue'y with the corresponding hole, and a bolt 32 to be in serted therein to lock said rod and the brake,

dsubstantially as described.

In testimony whereof We have hereunto set 3o our hands this 28th day of November, A. D.

JOHN WENNBERG. OLE LINDSTROM.

In presence of- A. NELSON, E. L. JOHNSTON.

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