US361564A - Lifting-jack - Google Patents

Description

(ModeL) J. WILSON.

LIFTING JACK.

No. 361,564. Patented Apr. 19,1887.

JAMES \VILSON, OF MOUNDSVILLE, IVESI VIRGINIA.

LIFTING=JACK.

SPECIFICATION forming part of Letters Patent No. 381,564, dated April 19, 1887. Application filed August I4, 1886. Serial No.2lll9l9. (Model) T 0 all whom it may concern.-

Be it known that 1, JAMES WVILsoN, of Moundsville, in the county of Marshall and State of \Vest Virginia, have invented certain new and useful ImprovementsinLifting-Jacks; and I do hereby declare the following to be a full, clear, and exact description of the'invention, such as will enable others skilled in the art to which it pertains to make and use it, reference being had to the accompanying drawings, which form part of this specification.

My invention relates to an improvement in lifting-jacks; and it consists in the combination of the standard having an iron bar or brace secured to one side, and which is pro: vided with notches upon one edge of an oblong shape, with the lever, the lever-supporting arm, which has the lever pivoted upon it, and which is provided with a hook at each one of its ends, and a lever-adjusting arm by means of which the lever is held in any desired position, as will be more fully described hereinafter.

The object of my invention is to provide a lifting-j ack in which the lever-supporting arm to which the lever is pivoted is made to catch upon opposite sides of the standard, and at the same time form a bearing for the lever-adjusting arm, so as to hold the operating-lever in any desired position. 1

Figure 1 is a side elevation of a lifting-jack embodying my invention. Fig. 2 is a perspective of the operating-lever and its attachments alone. Fig. 8 is a perspective of the standard alone.

A represents the base, to which the standard B is secured in the usual manner. Secured to one edge of the standard is the casting O,which is provided with a number of notches of an oblong shape, and in which the upper end of the casting applied to the lever is made to catch. In case the standard is made entirely of iron, instead of partly of iron and of wood, as here shown, this casting G will be formed as a part of the standard. .Securedto oneside of the standard is an iron rod or flange, D, against which the lower end of the casting which is applied to the lever is made to catch. This rod extends vertically up the side of the standard to a suitable height, so that the lower end of the casting which is applied to the handle can be freely adjusted up and down in relation to it.

The operating-lever E,instead of being connected directly to the standard, is here pivoted upon the lever-supporting arm F. This casting is provided with a hook, G, at its upper end, to catch in the oblong recesses in the casting 0, and with a second hook or catch H,at its lower end, and which passes around the edge of the standard and catches over the flange or rod, which is secured to the side of the standard. The hook G extends a suitable distance above the top edge of the lever, While the lower hook or catch, H, projects horizontally from the front edge of one of the prongs which comprise the lever-supporting arm. The two prongs of the casting are separated a suitable distance from each other, so as to allow the lever-adjusting arm I to play freely back and forth between them, and the upper ends of the two prongs catch upon opposite sides of the lever, as shown. The lower end of the lever-supporting arm at J forms the part upon which the lever-adjusting arm catches. This lever-adjusting arm is pivoted upon the side of thelever and passes down through the leversupporting arm at its lower end, and has its lower end to project a suitable distance above the top edge of the lever, and to which upper end the operating-rod 0 is connected. By pulling upon the outer end of this rod 0 the lever-adjusting arm can be released from the part J, and the lever thus adjusted into any desired position. hen the weight of the wagon is brought to bear upon the front end of the lever, the lever-adjusting arm is made to catch tightly against the part J, and thus prevent the end of the lever from sinking downward beyondthe desired point.

When so desired, the lever and its attachments can be removed entirely'froin the standard,and the parts packed away without taking up very much room. This is especially convenient in transportation where it is desired to save as much room as possible.

In order to adjust the lever up and down,it is only necessary to detach the upper hook from the notches in the casting 0, when the lever can be freely adjusted into any desired position, or moved upward from the top of the standard when it'is desired to separate the in the oblong notches, and a hook at its lower end to catch behind the rod D, and a notched adjusting rod or lever which is passed through the lever-supporting arm and is adapted to parts. catch upon the lower part, J, of the said arm,

Having thus described my invention, I substantially as shown and described. clain1 In testimony whereof I affix my signature in In a liftingjack, the combination of a standard provided with suitable notches upon one edge, and a rod or flange, D, upon one side, the operating-lever, the lever-supporting arm I provided with a hook at its upper end to catch l presence of two witnesses.

. JAMES WILSON. Witnesses:

J. M. TURNER, J OHN R. \VHARRY.

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