US602048A - Ambrose f - Google Patents

Description

A. I'. JACKSON. SPIKE BXTRAGTOR.

Patented Apr. 5, 1898.

(No Model.)

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AMBROSE F. JACKSON, OF OKLAHOMA, OKLAHOMA TERRITORY.

SPIKE-EXTRACTOR.

SPECIFICATION forming part of Letters Patent No. 602,048, dated April 5, 1.898.

Application iile. August 14 1897.

To a/ZZ whom it may concern.-

Be it known that I, AMBRosE F. J AoKsoN, a citizen ofthe United States,residing at Oklahoma, in the county of Oklahoma, Oklahoma Territory, have invented a new and useful Spike-Extractor, of which the following is a specification.

The invention relates to improvements in spike-extractors.

The object of the present invent-ion isto improve the construction of spike-extractors and provide a simple, strong, and durable device capable of readily withdrawing a spike without bending or otherwise injuring it, so that the spikes may be used more than once.

The invention consists in the construction andinovel combination and arrangement of parts hereinafter fully described, illustrated in the accompanying drawings, and pointed out in the claims hereto appended.

In the drawings, Figure 1 is a side elevation of a spike-extractor constructed in accordance with this invention. Fig. 2 is a vertical longitudinalsectional view of the same, the lever being in a vertical` position in full lines and in an inclined position in dotted lines. Fig. 3 is a detail view of the` claw. Fig. 4 is a detail perspective view of the casing.

Like numerals of reference designate corresponding parts in all the figures of the drawings. 1 designates a casing constructed of suitl able metal and provided with a vertical tubular portion 2, having its lower portion or base extended rearward at 3 to increase the base of the casing and to provide a fulcruming-toe, so that the entire device may operate as a lever in completing the extraction of a spike, as hereinafter described. v The tubular portion 2, which is preferably rectangular in horizontal section, receives a vertically-movable fulcrum-block 4c, having its upper end bifurcated to receive an operating-lever 5, and provided at its rear face with a series of `ratchetteeth 6, adapted to be engaged by a spring-actuated pawl 7, whereby the fulcrumblock is prevented from dropping back into vthe casing after it is drawn out.

The operating-lever 5, which has a limited swing in the bifurcation of the fulcrum-block, carries a claw 8 at its front and is provided at its back with a shoulder 9, adapted to en- Serial No.'648,250. (No model.)

gagethe fulcrum-block between the ears 10, formed by the bifurcation, whereby the swing of the operating-lever 5, independent of the fulcrum block, is limited. The fulcrumlblock is provided between the perforated ears 10 with an inclined shoulder or bearing-face 11, which forms a stop for the shoulder 9 and enables the same to fit squarely against the fulcrum-block when the operatingflever is swung partially downward. The fulcrumblock is cut away at an angle at the front of the space between the perforated ears 10, as clearly illustrated in Fig. 2 of the accompanying drawings, to provide a sufficient space v to permit the necessary movement of the operating-lever. The lower end of the operating-lever is cut away at an angle to provide a toe at the front, and the toe or projecting portion 12 is perforated and has a link 13 pivoted to it and forming the connection between it and the claw 8.

The claw 8, which engages the head of a spike, is preferably provided at its front face with a recess 14 and at its bottom or lower end with an opening 15. The recess 14 conforms to the configuration of and receives the head of a spike, and the opening 15 is provided for the reception of the shank and permitsthe claw to be readily slippedover a spike-head. f v

The rear or inner face of the claw is straight and bears against the straight front face of thetubular portion 2 of the casing 1, and its upward movement is guided by the latter. The arrangement of the operating-lever and the disposition of the claw enables a straight lift to be exerted on a spike during the rst portion of the extracting operation. In extracting the spike the operating -lever is swung down and rearward until the shoulder 9 contacts with the stop 1l. Itis then thrown forward, which operation raises the fulcrumn block in the casing and enables the lever to exert another straight vertical pull on the spike. When the lever is swung backward a second time, it contacts with the fulcrumblock, and the rearward movement of the lever is continued, causing the entire device to swing rearward on the fulcruming extension or toe 3 of the casing 1, which completes the extracting operation. Any amount of straight lift may be exerted on the spike by means of the ratchet mechanism, and the pawl which is pivoted between its ends at 1-6 has its -lower arm engaged by a spring 17, and is provided at its upper end with teeth for engaging those of the fulcrum-block. The casing is provided at its back with vertical side flanges l8,which strengthen the structure and reeeive'the pawl. The spring 17, which is located between the side flanges, is secured at its lower end to the extension 3 ot' the casing, and the lower arm of the pawl is arranged in convenient position to be engaged `by the foot of the operator. l The vertical movement of the fulcrum-block is limited by a stop 19, consisting of a plug' secured in a perforation of the block near the f lower end thereof and projecting therefrom into a vertical slot 2O .of the casing. vIzhwe plug is detachable and may be readily removed;

when it is desired toseparate :the parts.

Thre invention has the following .advainl tages: The ydevice is simple, strong, and dii-,I rable, and is adapted to withdraw spikes@ without bending or otherwise injuring them, f

and enables them to be used again.

It isi readily manipulated, the pawl being arranged i within convenient position to beoperated iby E the foot, and it is capable of exertingthe necessary vertical lift `on the spike and .of being swung bodily to complete the extracting roperation.

Changes in the form, proportion, and minor g details may be resorted to without departing from the spirit or sacrificing any of the advantages ofthe invention.

What .I claim is- 1. A spike-extractor, comprising a casingi forming a support, a vertically-movable fulcrum-block mounted in the casing, an .operating-lever fulcrumed on :the block and arranged to engage the same to limit its movement and permit the device .to be swung .bodily, anda spike-engaging device carried Aby the lever., substantially as described.

2. A `spike-extractor comprising a casing having a vertical tubular portion anda rearward extension forming a fulcrum, a vertically-movable fulcrum-block mounted in the tubular portion of the casing, a lever fulcrumed on the block and adapted to engage the same to limit its swing, a spike-engaging device carried by the lever, and a pawl mount- 1 ved on the casing and engaging the block, substantially as described.

3.. A spike-extractor, comprising a casing forming a fulcrum, a vertically-movable fulcrum-block mounted in the casing and provided with ratchet-teeth, a pawl `mounted on the casing and engaging the ratchet-teeth for holding the fulcrum-block elevated, a lever fulcrumed on the block, and a spike-engaging device carried by the lever, substantially as described.

4. A spike-extractor comprising a casing `provided with 4a straight vertical front face Vforming a guide, a verticallymovable fulcrum-block mounted in thecasin g, a lever fulcrumed on the block, and a spike-engaging `claw guided on the straight front faceof the casing and connected with the lever, substantially as described.

5. A Vspike-extractor comprising a casing provided with side flanges, a vertically-movable fulcrum-iblock'mounted in the casing and having its upper end bifurcated and provided i between the sides of the bifurcated portions

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