US 373744 A
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Description (OCR text may contain errors)
Patented NOLZZ, 1887..
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SPECIFICATION forming part of Letter-s Patent No. 373,744, dated November 22, 1887.
To @ZZ whom tV may concern:
Beit known that I, PATRICK LAEKIN, a citi zen of the United States, residing at Viraseca, in the county of Waseca and State of Minne- Sota, have invented a new and useful Tracle Jack, of which the following is aspecilication.
This invention relates to trackraisers for railways, the object of the invention being to enable the lever or clawhar to be shifted to a higher fulcrum without changing the position of the base and standards comprising the fulcrnm-bloch.
To this end the invention consists in novel features of construction and combinations, to be hereinafter fully described and claimed.
In the accompanying drawings, Figure 1 is a side elevation of the device in position for raising one side of a track. Fig. 2 is a bottom plan View of the lever. Fig. 3 is a rear elevation of the fulcruni-block. Fig. 4 is a front elevation of the saine.
The fulcrum-hloek consists of a rigid base or platform, a, of a width to fit between crossties of a track, to the upper side of which,near the front end, are bolted the foot-pieces b of the standards b. These standards are arranged parallel with each other and at right angles with the base or platform a, their rear edges being provided with downwardly-inclined notches b2, to receive the fulcruin stud or pin d' of the lever or claw-bar d. To the rear outer edges of the base a. are bolted the lower ends of bracerods c, said brace-rods being inclined forwardly and inwardly, and connected at their upper ends to the upper ends of the standards b bya stayholt,f, which also serves to brace the upper ends ofthe standard at the proper distance apart and to secure a handle or bail, e, as shown.
The lever d may be a claw-bar of ordinary construction, except that it is provided at a little distance from its lower end with a transverse fulcrnnistud, d, the ends of which project at either side of the lever and are adapted to engage the inclined notches bt in the rear vertical edges of the standards b.
In operation the end ofthe base or platform e, extending forward ofthe standards, is shoved beneath a rail-chair between the cross-ties, with the front edge of the standards in juxtaposition with the foot ofthe rail. The lower end of the lever d is now to he inserted heneath the rail; or, in case the latter rests upon the ground, beneath the head of the rail, and the stud d dropped into a pair of notches, b2, abreast the point of contact between lever and rail. The free end of the lever is now depressed to raise the rail and cross-ties for tamping or other purposes, and this operation may be repeated until the rail and ties are raised the required distance by simply moving the fulcruin-stud of the lever to a higher pair of notches, and without moving the base and-standards nearer to or farther from the rail, as the series of notches are in a vertical plane. A
Having thus described my invention, What I Claim, and desire to secure by Letters Patent, is-
In a track-raising device for railways, the combination, substantially as described, of the fulcrurn-block comprising a dat hase, parallel standards rising vertically from the hase and having their rear notched edges at right angles thereto, the bracerods and handle secured t0 the upper ends of the standards by a staybolt, and the lever provided at a distance from its lower end with a fixed fulcrnm-stud projecting on either side ofthe leverand adapted to engage the notches in the rear edges of the standards, whereby the fnlcruln-stud of the lever may be shifted to a higher pai r of notches without changing the position of the fulcrumblock.
PETER MCGOWNE, JOHN MADIGAN.