US560056A

US560056A - Raiford a

Info

Publication number: US560056A
Authority: US
Publication date: 1896-05-12
Anticipated expiration: 1913-05-12

Description

(No Model.)

R. A. ARNOLD.

LIFTING JACK.

No. 560,056. Patented May 12, 1896.

$55720 ZzZ- iJNiTEn STATES PATENT ()FFICE.

RAIFORD A. ARNOLD, OF SAN ANTONIO, TEXAS, ASSIGNOR OF ONE-HALF T O PAFL MAUREAUX, OF SAME PLACE.

LlFTlNG-JACK.

SPECIFICATION forming part of Letters Patent No. 560,056, dated May 12, 1896.

Application filed February 26, 1896. Serial No. 580,856. (No model.)

To aZZ whom, itmay concern:

Be it known that I, RAIFORD A. ARNOLD, of the city of San Antonio, Bexar county, State of Texas, 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 is an improved lifting-jack designed expressly for track-levelers, although the construction may be varied for other purposes, or it may be used for other purposes in the form shown.

Myinvention consists of the novel construction, combination, and arrangement of parts hereinafter described, shown, and claimed.

In the drawings, Figure 1 is a perspective of my improved lifting-jack in use as atracklevelers tool. Fig. 2 is a cross-sectional view on the line 2 2 of Fig. 1. Fig. 3 is a perspective of a pawl-headed lever used in my invention. Fig. 4 is a detail view of a ratchet and lever of which I make use. Parts are broken away. Fig. 5 is a sectional detail on the line 5 5 of Fig. 1. Fig. 6 is a detail perspective of the shaft and liftingpinion used in my invention.

Referring by numerals to the drawings, 1 is the base of my liftingjack.

2 and 3 are posts, the inner edges of which are grooved, as shown in Fig. 2.

4 is a cross-bar connecting the top ends of the

posts

2 and 5 is a toothed rack sliding in the grooves of the

posts

2 and 3, as shown in section in Fig. 2.

G is a plate attached to the lower end of the toothed rack 5 and is designed to be inserted under the end of a railroad-tie or under a rail or other object which is to be lifted. There is a rectangular opening 7 in the base 1, which allows the plate 6 to sink down flush with the base.

8 and 9 are ears bolted to the

posts

2 and 3 by the bolts 10 and 11. The

ears

8 and 9 have horizontally-alined bearings 12 and 13, in which the shaft 5 rotates. The shaft 14:

has the pinion 15 near its center, which ongages the teeth of the rack 5.

16 is a ratchet-wheel located upon the shaft 11 and beside the pinion 15. The teeth of this ratchet are engaged by the ratchet-face of the pawl 17. (Shown in perspective in Fig. 3.)

18 is a lever by which the shaft let is rotated. 5 5 One end of this lever is bifurcated and the parts are bored.

19 is a ratchet-wheel having a square hole in its center and hubs on each side. This wheel runs between the bifurcated parts of the lever 18, and the hubs fit in the bores in said parts.

20 is a spring-pawl fastened to the back side of the lever 18, and one end engages the teeth of the ratchet-wheel19. The shaft 11 has a square portion 21 on one end to fit in the square hole in the ratchet-wheel 19.

22 is the end of a rail resting on the plate c in position to be lifted.

The operation of my lifting-jack is as fol- 7o lows: The plate 6 is lowered into the opening 7 in the base 1. The base 1 is inserted under the rail, tie, or other object to be raised. The lever 18 is then operated up and down like a pump-handle. Pressing down raises the toothed rack 5, and the ratchet-face 17, engaging the wheel 16, holds the load while the lever 18 is being raised. To lower the load, the pawl 17 is raised out of engagement with the wheel 19.

My lifting-jack is strong, durable, and easy to operate.

I claim A lifting-jack comprising the base 1, the

posts

2 and 3 projecting upwardly from said base and parallel to each other, the inner edges of said posts being grooved and the upper ends being tied .together, the toothed rack 5 sliding in the grooves between said posts, the plate 6 attached to the lower end 0 of said toothed rack, there being a rectangular opening in said base 1 to receive said plate 6, the shaft 11 positioned in bearings at the upper end of the

posts

2 and 3 and transversely thereof, the pinion 15 on the center of said shaft and engaging the teeth of said rack 5, the ratchet-Wheel 16 on said shaft 1i and outside said pinion 15, the pawl 17 pivoted to the upper end of the post 3 and having the ratchet-face engaging the teeth of the ratchet-Wheel 16, the lever 18 upon the end of the shaft 14, the ratchet-wheel 19 between V the parts of the bifurcated end of said lever 18, and the spring-pawl 2O fastened to the le- 10 ver 18 and engaging the teeth of said ratchetwheel 19.

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

RAIFORD A. ARNOLD. Witnesses:

M. G. BENARIDES, JAS. OOoNNoR.