US394820A

US394820A - Wagon-jack

Info

Publication number: US394820A
Authority: US
Publication date: 1888-12-18
Anticipated expiration: 1905-12-18

Description

(No Model.)

W T. BROWN.

WAGON JACK.

No. 394,820. Patented Dec. 18, 1888.

' vwawtoz, m'ELBmu/M l vitmeooeo UNITED STATES PATENT OFFICE.

IVILLIAM T. BROW N, OF SIVAN, KENTUCKY.

WAGON-JAG K.

SPECIFICATION forming part of Letters Patent No. 394,820, dated December 18, 1888.

Application filed tcmbct 25, 1888. Serial No. 286,357. (No model.)

To all whom it Hwy concern:

Be it known that 1, WILLIAM T. BROWN, a citizen of the United States, residing at Swan, in the county of Graves and State of Kentucky, have invented new and useful Improvements in lVagon-Ja-cks, of which the following is a specification.

My invention relates to improvements in wagon-jacks; and it consists in certain novel features hereinafter described and claimed.

In the accompanying drawings, Figure 1 a perspective view showing the device adjusted to raise the front axle of the wagon. Fig. 2 is a side elevation showing it adjusted to raise the rear axle. Fig. 3 is a sectional view showing the device locked to hold the rear axle raised.

Referring to the drawings by letter, A designates the standard, having a notch, 13, in its upper end and provided at its lower end with an extension, 0. The said extension has a tenon or tongue, E, which is inserted in a notch, E, in the lower end of the standard and is pivoted therein by means of a screw or pin, F, inserted through the standard and the upper end of the tongue. .Vhen the extension is lowered, as shown in Figs. 2 and 3, it is held against movement by means of a removable pin or peg, G, inserted transversely through the lower end of the standard and the tongue E, as shown. v

\Vithin the notch B in the upper end of the standard I pivot the lifting-lever H and the operating cam-lever I. The lifting-lever is pivoted at an intermediate point of its length, and has one end projecting in front of the standard and adapted to engage under the axle of the wagon, as clearly shown. The rear end of the lifting-lever projects from the standard and is connected to the operating camlever by means of a link, J. The said link J has its lower end pivoted to the rear end of the lifting-lever and has its upper end provided with a longitudinal slot, K, which is engaged by a pin, L, projecting laterally from the cam-lever. The cam-lever is pivoted at its front end within the notch of the standard and projects rearward therefrom a suitable distance, as shown. The said lever is provided at its front end with a depending cam, M, having a transverse shoulder, N, and faced with metal to prevent wear. This cam M bears upon the upper edge of the lifting-lever, and the shoulder N is adapted to engage a transverse shoulder, O, on the said lifting-lever, when the device is in use, as most clearly shown in Fig. The edges of the lifting lever are also faced with metal to prevent wear.

In operation the cam-lever is depressed to raise the lifting-lever, and the weight of the wagon will cause the shoulders N O to engage, and thereby lock the device. As the cam-lever is depressed, the cam, bearing on the up per surface of the lifting-lever, depresses the rear end thereof and raises the front end, thereby lifting the wagon-axle, so that the wheel will be raised from the ground and can be easily removed and the axle lubricated. Upon the pressure being relieved from the cam-lever the weight of the wagon depresses the front end of the lifting-lever, thereby raising the rear end and drawing the shoulder 0 against the shoulder N, the slotted construe tion of the link J causing the same to slip past the pin K, so that the cam-lever will not be raised. In order to disengage the levers, the cam-lever is given a slight downward push and is then quickly raised, so that the shoulders N 0 will clear each other, and the pin K will draw upon the link J and thereby raise the rear end of the lifting-lever, consequently depressing the front end and lowering the axle.

hen the device is used for raising the rear axle, the extension C is lowered, as shown in Fig. 3, and when it is used for raising the front axle it is thrown upward, as shown in Fig. 1, thereby decreasing the height of the jack to accommodate it to the difference in height between the front and rear axle. \Vhen in the position shown in Fig. 1, the extension 0 also serves as an additional brace to hold the jack firm and steady while in use.

Having thus described my invention, what I claim, and desire to secure by Letters Patent, is-

1. The combination of the standard having a notch in its lower end, an extension having a tongue, E, pivoted at its upper end in said notch, and a removable peg or pin inserted transversely through said tongue and the standard, as specified.

2. In a wagon-jack, the combination of the to the standard above the lifting-lever, and having a shoulder, N, adapted to engage the lifting-lever, and a link, J, pivoted to the lifting-lever and provided with a longitudinal slot engaged by a pin on the eamlever, as specified.

In testimony that I claim the foregoing as my own I have hereto affixed my signati'n'e in presence of two witnesses.

\VILLIAM BROWN.

\Vitnesses:

II. C. SHELTUN, C. XVI-IITTEMORE.