US541345A - Lifting-jack - Google Patents

Description

(No Model.)

J. W. GURRIER'.

LIFTING JACK.

Patented June 18, 1895.

Fig-2- Fig.1-

WIT M55555- INVl-ZN TU R UNITED STATES PATENT OFFICE.

JOHN WV. CURRIER, OF LOS ANGELES, CALIFORNIA.

LlFTING-JACK.

SPECIFICATION forming part of Letters Patent N 0. 541,345, dated June 18, 1895.

Application filed March 5, 1895. Serial No. 540,654.

To all whom it may concern:

Be it known that I, JOHN W. CURRIER, residing in Los Angeles, county of Los Angeles, and State of California, have invented an Improvement in Lifting-Jacks, of which the following description, in connection with the accompanying drawings, is a specification, like letters and numerals on the drawings representing like parts.

This invention relates to a lifting jack and is more particularly an improvement on lifting jacks of the class employed to raise the axles of wagons, carriages and light vehicles.

This invention has for its object to improve, simplify. and cheapen the construction of lifting jacks of the class referred to, whereby the same may be more quickly and easily ad justed for use with axles of varying heights above the ground as will be described.

The particular features in which this invention consists will be pointed out in the claim at the end of this specification.

Figure 1 represents in perspective a liftingjack embodying this invention. Fig. 2 is a vertical section of a lifting-jack similar to that shown in Fig. 1, showing a modified form of holding device for the operating-handle.

Referring to Fig. 1, A represents an upright or standard for supporting the operating parts of my improved jack, the standard A being secured to a suitable base plate A. The upright or standard A is made tubular or hollow preferably for the whole of its length and is provided on one side with a longitudinal slot or opening a through which extends the rear portion of a rest or step 0. upon which, in practice, the axle is to be supported.

The rest or support a is movable vertically in the slot at of the hollow upright A, and this movement, in accordance with this invention, is effected by means of a substantially flat rod or bar I) provided on one side with notches or teeth I) inclined downwardly as clearly shown in the drawings.

The toothed or notched bar I) has its lower end pivoted as at b to the rest or step a. The notched or toothed bar I) constitutes the lifting bar for the step or rest a, and extends upward within the hollow upright and projects above the same and is embraced at its upper end above the hollow standard or upright by the forked arms 0 c of an operating (No model.)

lever 0 pivoted as at 0 10 a bracket suit- A ably secured to the slotted upright or tube A,

0 0 located on opposite sides of the liftingbar I) and serving to loosely connect the said lifting bar to the operating lever 0 The pin 0 is adapted to engage with the teeth I) on the lifting bar and serves to fasten the lifting bar to the operating lever when it is desired to raise the lifting bar by means of the operating lever. The distance between the pins 0 e is greater than the width of the lifting bar 17, so that the operating lever 0 may be turned so as to place the pins in a plane substantially at right angles to the said bar, in which position a tooth on the lifting bar can be disengaged from its co-operating pin 0 by moving the lifting bar outward or in the direction indicated by arrow 20, Fig. 1, and when so disengaged, the said bar is free to be raised and lowered through the slot or opening in the operating lever formed by the forked arms 0 c and the pins 0 0 It will thus be seen that the lifting bar I) may be quickly and easily adjusted so as to be broughtin contact with the under side of the carriage axle before the latter is lifted, and when brought into its adjusted position, the lever c is again engaged with the said bar and the full movement of the lever can be utilized in lifting the axle.

When the lifting bar has been raised by turning the operatinglever down into the position shown in Figs. 1 and 2, at which time the axle is supposed to have been raised, the operating lever 0 may be positively locked by means of a pawl catch (1 shown i'n Fig. 1,

engaging a finger d on the bracket 0 the said pawl being pivoted as at d to the operating lever c and being adapted to be disengaged from its co-operating finger d by the rod d secured at one end to the said pawl and movable in suitable guides d carried by the operating lever.

Instead of the particular construction shown in Fig. 1, the operating lever 0 may be secured by means of a notch or toothed bar 6 pivoted as at e to the bracket 0 and co operating with the pin 6 carried by the operating leverc after the manner shown in Fig. 2.

The upright A is preferably made tubular or hollow throughout its length and its bottom portion is closed by a suitable plug or capf (see Fig. 2), so that the lower portion 10 of the upright below the bottom of the slot a, may form a reservoir or chamber, which in practice may be filled with oil indicated at f, and the top of the oil chamber or reservoir may be closed by a removable stopper or plug f. The upright A at its lower end may be provided with an outlet p'ipef provided with a cook or valvej through which the oil in the reservoir 10 may be drawn off to fill the oil can f which I prefer to detachably secure in any-suitable manner to the said upright. In the present instance, the oil can is represented as detachably secured to the upright A by makingthe handle for the said oil can in the form of spring jaws or clamps to grasp or embrace the upright A.

I claim- In a lifting jack, the combination of the following instrumentalities, vizz-the hollow upright A provided with the longitudinal slot a extended from its top toward its bottom but partially the length of the said upright, the rest or support a extended through the slot a, the lifting bar- I) located within the hollow upright and projecting above the same and pivoted at its lower end to the rest or support a, and provided with the teeth I), the operating lever c forked atits end to embrace the said lifting bar, the pins c 'carried by said

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