US1961050A

US1961050A - Spike puller

Info

Publication number: US1961050A
Application number: US657137A
Authority: US
Inventors: George W Johnson
Original assignee: BOWDIL CO
Current assignee: BOWDIL CO
Priority date: 1933-02-16
Filing date: 1933-02-16
Publication date: 1934-05-29
Anticipated expiration: 1951-05-29

Description

May 29,1934. G. w. JOHNSON SPIKE FULLER Filed Feb. 16, 1933 eozlge Joiz'ow.

Patented May' 29, 1934 Istres.

Price SPIKE FULLER.

George W. Johnson, Canton, (ihio, assigner to The Bowdil Company, Bowdil, Ohio, a corporation of Ohio Application February 16, 1933, Serial No. 657,137

11 Claims.

This invention relates to spike pullers and has for its object to provide a comparatively sime `ple and inexpensive device of this character yembodying in its structure a rocking iulcrum whereby to increase the leverage and permit extraction of a spike from a cross tie or other support with greater facility and less exertion on the part of the operator than heretofore.

A further object is to provide a spike puller having a claw detachably secured in Vposition on the head of the implement so as to permit the ready removal thereof to facilitate dressing when necessary or replacement by claws of different sizes according to the size of the spike or other fastening to be extracted.

A further object is to provide a hand tool of this character the construction of which is such that a spike may be quickly pulled or extracted without the necessity of the operator bending over the work and in which the extracting claws are relatively small and made of high grade steel so as to increase the eiiective life of the tool.

A still further object of the invention is generally to improve this class of devices so as to increase their utility, durability and emciency.

In the accompanying drawing forming a part of this specification:

Figure 1 is a side elevation of a spike puller constructed in accordance with the present invention and showing in full lines a claw positioned over a spike and in dotted lines the position assumed by the parts when the tool is rocked on its iulcrum to pull the spike.

Figure 2 is a vertical sectional View of the head of the implement and its associated parts.

Figure 3 is a transverse sectional view taken on the line 3-3 ci Figure 2.

Figure 4; is a bottom plan view of Figure 2.

Similar numerals of reference indicate corresponding parts in all the figures of the draw- The improved spike puller forming the subject matter of the present invention comprises a hollow cylindrical head 5 preferably formed of metal and of any desired length and cross secn tional diameter, said head being provided with an upstanding boss 6 the interior walls of which are threaded at 7 and adapted to engage the correspondingly threaded end 8 of an operating lever 9. The lever 9 is preferably cast or otherwise formed with longitudinal strengthening ribs l0 and terminates at its outer free end in a smooth portion constituting a handle 1l. The

' head 5 isprcvided with oppositely disposed seating recesses 12 in which is detachably tted a removable claw indicated at 13.- This claw 13 is relatively small so as to permit the claw to be made of high grade steel at very little additional cost and the opposite ends of the claw (Cl. 25d-25) are curved or deilected upwardly to form curved terminals i4 having seats l5 and 16 formed therein and adapted to receive a spike indicated at l'. The lower surface of the head 5 constitutes a iul- Crum i3 on which the implement is rocked in the act or pulling or extracting a spike and irnmediately above the fulcrurn 18 the head is provided with a flat bearing surface i9 preferably disposed at a slight angle to the horizontal axis of the head, as shown. the claw i3, where it rests on the fiat surface i9, is cut away to form oppositely disposed shoulders 20 which bear against the exterior wall of the head and serve tc center the claw within said head. The upper surface of the claw is preferably formed with a shallow concave socket 2l and the recesses 12 are slightly larger than the thickness of the claw so as to permit the claw to be inserted within the head from either side thereof. That portion of the operating lever immediately below the threads 8 terminates in a smooth cylindrical extension 22, the lower face oi' which is convex and is adapted to enter the concave seat 21 whereby when the lever 9 is rotated, the convex end of the extension 22 will bear against the claw and rmly clamp said claw within the head. A nut 23 engages the threads 8 on the lever and bears against the adjacent end of the boss 6 for locking the lever against rotation after said lever has been adjusted to clamp the claw within the head.

The lever 9 is preferably of suflicient length to permit the operator to position the claw over a spike and extract the saine without the necessity of bending over the work and thus permits the I f extraction of a spike with very little exertion on the part of the operator. The spike engaging seat 16 is preferably larger than the seat l5 so as to permit the tool to be used for extracting spikes of different sizes and inasmuch as the claw i3 is jon a cross tie when pulling or extracting a spike 1 therefrom.

In operation, the implement is positioned adjacent the spike to be extracted with the head of the spike seated in either one of the seats 15 or The lower surface oi l" 16, as shown in full lines in Figure 1 of the drawing. The handle 11 is then pulled rearwardly to the dotted line position shown in Figure 1, which causes the fulcrum 18 to rock on the cross tie or other support and lift or extract the spike therefrom. If a larger spike is to be extracted,

the claw 13 may be readily removed by releasing the clamping nut 23 and rotating the lever 9 until the cylindrical extension 22 is disengaged from the claw when, by elevating the claw slightly to permit the shoulders 20 to clear the head 5, said claw may be readily removed from the head from either side thereof through the adjacent seating recess 12. n tting a new claw to the head it is merely necessary to reverse the operation, that is to say, insert the claw within the head through either recess 12 and position the shoulders 20 over the adjacent wall of the head and then rotate the lever until the extension 22 enters the socket 21, when the claw will be firmly clamped in position on the head and in which position it may be rigidly supported by adjusting the nut 23. With a tool constructed in this manner, a plurality of claws may be kept in stock and a desired claw selected from the stock and inserted in the head according to the work to be performed. Therefore the head and its associated parts may be used for an indefinite period as the only part which needs renewal is the Claw. 1t will, of course, be understood that the tool may be made in diierent sizes and shapes and constructed of any suitable material without departing from the spirit of the invention.

Having thus described the invention, what l'. claim is:

l. An implement of the class described cornprising a substantially cylindrical head, a reversible claw detachably secured on the head, a handle threaded through the head and engaging the claw for securing the claw in position thereon, and means carried by the claw and engaging the head for preventing lateral displacement of said claw.

2. An implement of the class described comprising a hollow substantially cylindrical head having oppositely disposed recesses formed therein, a removable extracting claw seated in said recesses, an operating handle threaded in the head and bearing against the claw for clamping the claw in position on the head, and means on the claw engaging the head at the recesses therein for preventing lateral displacement or" said claw.

3. An implement of the class described comprising a hollow substantially cylindrical head having oppositely disposed recesses formed therea detachable claw fitted in said recesses and provided with spaced shoulders bearing against the head, and an operating handle having a threaded portion extending within the head and bearing against the claw for clamping the claw in position on the head.

4. An implement of the class described comprising a substantially cylindrical head, a removable extracting claw seated in the head and having its opposite ends curved upwardly. lower curved portion of the head between said upwardly curved portions constituting a fulcrum, an operating lever extending within the head and bearing against the claw for detachably securing the claw in position on the head, and means independent of the lever ior preventing lateral displacement of the claw within the head.

.5. An implement of the class described comprising a head, the lower portion of which is curved and constitutes a ulcrum, a removable extracting claw tting within and extending transversely of the head, an operating lever threaded in the head and bearing against the claw for clamping the claw in position on the head, and means on the claw coacting with the head for preventing lateral displacement of said claw.

6. An implement of the class described comprising a hollow cylindrical head having an internally threaded boss projecting therefrom, a removable claw carried by the head and extending transversely thereof and having its upper surface provided with a socket, and an operating handle having its lower end threaded in the boss and provided with a terminal convex end adapted to iit within the socket and clamp the claw in position on the head.

7. An implement of the class described comprising a hollow cylindrical head having oppositely disposed recesses formed therein and provided with a threaded boss, a detachable claw carried by the head and removable therefrom through either recess, an operating handle having a threaded portion engaging the threads in the boss and bearing against the claw for clamping the claw in position on the head, and a nut engaging the threads on the operating handle and bearing against the boss.

8. An implement of the class described comprising a hollow cylindrical head provided with oppositely disposed recesses and having its lower portion provided with a dat bearing surface disposed at an angle to the horizontal axis of the head, a removable claw having a lat lower surface engaging the flat bearing surface and dening oppositely disposed stop shoulders for contact with tl e head, and an operating handle threaded in the head and having its lower portion bearing against the ciaw for securing said claw in position on the head.

9. An implement of the class described comprising a hollow cylindrical head having oppositely disposed recesses termed therein, a detachable claw seated in said recesses and having its opposite ends deected upwardly and previded with lower curved surfaces, the exterior surface of the head between said ends forming a continuation of said lower curved surfaces and constituting a ulcrum, and an operating handle extending within the head and bearing against the claw for detachably securing the claw in position on the head.

l0. An implement o1 the class described comprising a head having a cylindrical portion constituting a rocking fulcrum, an extracting claw removably iitted within the head and provided with spaced shoulders, and an operating handle extending within the head and bearing against the claw for clamping the shoulders in engagement with the head.

il. An implement of the class described comprising a hollow head having a cylindrical portion constituting a iulcrum and provided with 1f.

oppositely disposed seating recesses, a removable extracting claw iitted within said recesses and provided with spaced shoulders deiining terminal upwardly deiiected portions disposed on opposite sides of the fulcrum and having spike receiving seats formed therein, and an operating handle threaded in the head and having a terminal portion adapted to bear against the claw and clamp said shoulders against the head on opposite sides of the fulcrum.

GEORGE W. JOHNSON. [L.S.]