US557579A - Lifting-jack - Google Patents

Description

(No Model.)

LIPTING JACK. I No. 557,579. Patented Apr. 7, 1896.

J id r u I UNITED STATES PATENT OFFICE.

JAMES D. GURGANUS, OF \VHISTLER, ALABAMA.

LlFTlNG-JACK.

SPECIFICATION forming part of Letters Patent No. 557,579, dated April 7, 1896.

Application filed June 24, 1895. Serial No. 553,860. (No model.)

T at whom it may concern.-

Be it known that 1, JAMES D. GURGANUS, of the city of WVhistler, Mobile county, State of Alabama, have invented certain new and useful Improvements in Lifting-Jacks, of which the following is a full, clear, and exact description, reference being had to the accompanying drawings, forming a part hereof.

My invention relates to an improved liftingjack; and it consists in the novel construction combination, and arrangement of parts hereinafter described and claimed.

In the drawings, Figure 1 is a vertical sectional View of an ordinary car-wheel and journal-box and showing my improved lifting-jack in position relative said wheel and box. Fig. 2 is a view in perspective of a yoke of which I make use in carrying out my invention. Fig. 3 is a side elevation of a screw-seat used in carrying out my invention. Fig. 4 is a vertical sectional view taken approximately on the indicated line 4: 4 of Fig. 3. Fig. 5 is a side elevation, partly in section, of the screw, such as is contemplated by my invention.

Referring by numerals to the accompanying drawings, 1 indicates an ordinary car-axle, the same having the wheel 2 fixed thereon in the usual manner, and the end of said axle 1 is journaled in the ordinary box 3.

The yoke of which I make use comprises the base portion 4:, the ends 5 of which are bent upwardly and inwardly. Formed integral with the upper ends of these upwardlybent portions 5 are horizontally-arranged arms 6, the outer ends of which are brought together, and formed integral with said outer ends is a laterally-projecting block 7, the end 8 of which is curved downwardly and terminates a slight distance below the plane occupied by the lower faces of the arms (3.

The screw-seat of my improved jack comprises a metallic block 9, that is preferably angular in cross-section and provided on its upper end with laterally-projecting lugs 10, the lower faces 11 of which are convex. Vertically arranged within this block 9 is a screwthreaded bore 12, that communicates with a recess 13, formed in the extreme lower end of said block 9.

14 indicates a screw, which is of such size that it may be readily operated in the screwthreaded bore 12 in the block 9. A head 15 is formed integral with the upper end of this screw 14, and said head is provided with intersecting horizontal apertures 16, in which may be located a suitable handle. Formed integral with said head and extending upwardly therefrom is a trunnion 17, on which is mounted for rotation a block 18. The upper end of this block 18 is corrugated or roughened in any suitable manner.

Heretofore it has been the practice when the journal-boxes needed certain repairs to raise the entire trucks of a car and then to move the wheels and axles of said trucks downwardly in order to repair or replace the certain parts within the boxes, this procedure entailing much time and labor. These inconveniences are overcome by the use of my improved jack, the operation incident to the raising of the car-trucks being as follows: The base at of the yoke is placed upon the surface of the road-bed in such a manner as that the downwardly-bent end 8 of the block 7 rests upon the inner face of the flange that comprises the rim of the wheel. This brings the arms 6 into an approximately horizontal plane. The screw-seat 9, having the screw 14 located therein and at the lowermost limit of movement, is now located in the yoke in such a manner that the convex faces 11 of the lugs will rest directly upon the upper faces of the arms 6 of the yoke. This brings the block 18 directly beneath the outer end of the box 3. The operator now passes a bar or handle through one of the apertures 16 in the head and by properly manipulating said handle raises the screw-14 from the screw-seat in the usual manner. As soon as the block 18 011 the upper end of the screw 14 engages with the box 3 said box and trucks to which it is fixed will be raised in the desired manner, while the wheel and axle will remain in their normal horizontal planes. hen said box has been raised a sufficient distance from the journal at the end of the axle, said box may be opened and the bearing-plates or other parts desired removed therefrom. By forming the under sides of the lugs 10 convex the screw and screw-seat may be tilted to slight angles relative the yoke and box.

By using a lifting-jack of my improved con struction the boxes and trucks of cars may be lifted independently of the car-wheels and axles, and said jacks are very compact, simple in construction and operation, and are very durable and efficient.

I claim- 1. In a device of the class described, a yoke adapted to rest at one end upon the road-bed and engage with its opposite end the peripheral flange of the car-Wheel, a separate screwseat located loosely upon and sustained by said yoke, and a screw arranged to operate in said screw-seat.

2. In a device of the class described, a yoke arranged to rest on the road-bed and engage the peripheral flange of the car-wheel, a screwseat having laterally-projecting arms whereby said screw-seat is suspended within the yoke, a screw arranged to move vertically within said screw-seat, and a bearing-block mounted for rotation upon the upper end of said screw.

3. In a device of the class described, the combination of a yoke comprising a base portion, horizontallyarranged arms formed integral with said base portion, a lug formed integral with the meeting ends of said horizontal arms, a screw-seat provided with integral lugs having convex end surfaces by means of which lugs said screw-seat is suspended in the yoke, a screw arranged to move vertically within said screw-seat, and a bearing-block mounted for rotation upon the upper end of said screw.

In testimony whereof I affix my signature in presence of two witnesses.

JAS. D. GURGANUS.

\Vitnesses:

BENJ. JOHNSTON, ONEY J AOKSON.

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