US821404A - Spike-puller. - Google Patents

Description

No. 821,404. PATENTED MAY 22, 1906. O. B. CRAFT.

SPIKE FULLER.

APPLICATION FILED JUNE 6, 1905.

PATENT OFFICE.

UNITED STATES OWEN BRADFORD CRAFT, OF HAWTHORN, PENNSYLVANIA, ASSIGNOR OF ONE-HALF TO J. A. F. HOY, ()FCLARION, PENNSYLVANIA.

1 SPIKE-FULLER;

Specification of Letters Patent.

Application filed June 6. 1905. Serial No. 263.965.

To all whom it may concern.-

Be it known that I, OWEN BRADFORD CRAFT, a citizen of the United States of America, residing at Hawthorn, in the county of Clarion and State of Pennsylvania, have invented certain new and useful Im rovements in Spike-Pullers, of Which the ollowing is a specification.

This invention relates to new and useful improvements in nail-extractors, and is intended more particularly to be used in withdrawing spikes.

It is the object of this invention to provide a novel device of this kind desi ned primarily for use in pulling railroad-spikes, wherein the action of the wheel forces the claws of the puller in such position to exert a pull on the With the foregoing and other objects in view the invention consists in the details of construction and in the arrangement and combination of parts to be herelnafter more fully set forth and claimed.

In'describing the invention in detail reference will be had to the accom anying drawin s, forming part of this speci 1cation,wherein like characters denote corresponding parts in the several views, in which Figure 1 is a view in perspective of the invention. Fig. 2 is a fragmentary sectional view. Fig. 3 is a perspective view of the pawl used in this invention, illustrating the beveled edges thereof, said pawl being shown detached. Fig. 4 is a sectional view taken on the line 4 4 of Fig. 1, and Fig. 5 is a sectional view of a modified construction.

In the drawings, '1 indicates a suitable handle terminating in a head 2, having extending therethrough an opening 3, the end walls of which bein rounded, as at 4 4. On the end of the head are formed the claws 5 for the purpose readily understood. Within the opening 3 of the head is a ratchet-wheel 6, having its teeth 7 extending backward on an incline. The wheel 6 is mounted on a pin 8, journaled or held in the side walls of the head. On the upper surface of the head and communicating with the opening 3 is a pocket or recess 9, which has 1ts inner end tapered to a point. The walls of the tapered portion are beveled inwardly. Fitting with the pocket 9 and corresponding to the shape thereof is a pawl 10, which has the edges of its tapered portion 11 beveled outwardly to lit within the beveled portion of the pocket, and thereby form a dovetailed connection. The pawl extends partly within the openin 3 and engages the teeth of the wheel 6 anc holds thesaid wheel against movement in one direction. To hold the pawl within the pocket, a plurality of screws 12 or the like pass through the pawl and engage the head 2.

'By the fact of having a dovetail connection between the pawl and the pocket the strain on the pawl is distributed to the head and I almost entirely removed from the securing means 12. This is a great advantage in practice, as the life and utility of the device are greatly prolonged.

As the o eration of the device is thought to be clear y apparent from the foregoing, a

detail thereofis thought unnecessary.

Although this invention has been described as used as a spike-puller, it is to be understood that it can be used with equal success as a nail-extractor, tack-extractor, or for other similar uses.

In the modification shown in Fig. 5 I provide a head 1* with claws 5. The head is provided with a recess 3 in its under surface, in which a wheel 6 is rotatable, said wheel having a series oi teeth 7*. The wheel 6 is held against retrograde movement through the medium of the pawl 10*, which is secured in place by means of the screw 12. The wall 4' of the cavity or recess extends only partially through the head, so that said head has its u per surface undisturbed and may be utilize as a hammer or driver.

Having fully described my invention, what I claim as new, and desire to secure by Letters Patent, is

In a device of the character described, a head having a recess, a handle for the head, a wheel mounted within the recess, said wheel having teeth projecting from its periphery, all of said teeth being lnclined in one direction, claws carried by the free end of the head, a pocket formed in the head and communicating with the recess, said pocket having its inner end a proximately V-shaped and hava ing the wal s of its \l-shaped portion beveled inwardly, a pawl fitting within the pocket and extending Within the recess and engaging the teeth of the wheel, said pawl having an end approximately V-shaped to fit within 10 the \!shaped portion of the pocket, the

edges of said V-shaped pawl being beveled outwardly to engage the bevel portion of the recess.

' In testimony whereof I afiix my signature,

in the presence of two witnesses, this 2d day 15 ofJune, 1905.

OWEN BRADFORD CRAFT. Witnesses:

DANIEL M. GEIsT, J. M. MoYER.

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