US764216A

US764216A - Self-feeding hammer.

Info

Publication number: US764216A
Application number: US15928103A
Authority: US
Inventors: James W Thompson
Original assignee: Individual
Current assignee: Individual
Priority date: 1903-05-29
Filing date: 1903-05-29
Publication date: 1904-07-05
Anticipated expiration: 1921-07-05

Description

No. 764,216. PATENTED JULY 5, 1904.

r J. WFTHOMPSON.

SELF FEEDING HAMMER.

APPLICATION nun MAY 29. 1903. no MODEL. v 2 SHEETS-SHEET 1.

H g E.

. James 717. Jinn 75021 PATENTED JULY 5, 1904- No. 764,216- r j J. W. THOMPSON.

sELE FEEDING HAMMER.

APPLICATION FILED MAY 29, 1903.

2 SHEETS-SHEET 2.

N0 MODEL.

UNITED STATES Patented July 5, 1904.

PATENT OFFICE.

SELF-FEEDING HAMMER.

SPEGIFIQATION forming part of Letters Patent No. 764,216, dated July 5, 1904.

Application filed May 29, 1903. Serial No. 159,281. (No model.)

To all whom it may concern.-

Be it known that I, JAMES W. THOMPSON, a citizen of the United States, residing at Deer River, in the county of Itasca and State of Minnesota, have invented a new and useful Improvement in Self-Feeding Hammers, of which the following is a specification.

This invention relates generally to hammers, and more particularly to a magazine-hamrner or one adapted to contain a number of nails which are fed to the head of the hammer in successive order.

The object of the invention is to provide a hammer of thisdescription particularly adapted for the use of lather-s whereby a'number of nails can be started in rapid suceession and then subsequently driven in to the full extent.

Another object of the invention is to provide a hammer of this kind in which the starting of one nail into the'wood will effect the release of the next adjacent nail from the magazine and put it in position to be driven.

With these and certain other objects in view the invention consists in the novel features of construction, combination, and arrangement, all of which will be fully described hereinafter, and pointed out in the claims.

In the drawings forming part of this speciiication, Figure 1 is a perspective view of a magazine-hammer constructed in accordance with my invention. Fig. 1 is a detail perspective view of a hatchet-head which may be used in connection with my improved hammer. Fig. 2 is a vertical longitudinal sectional view of the same. Fig. 3 is an inverted perspective view of the connecting-block adapted to hold the sections of the handle and magazine together. Fig. & is a detail perspective view, partly in section, showing the two sections of the handle and the grooves produced in the contiguous faces thereof. Fig. 5 is a transverse sectional view on the line 5 5 of Fig. 2.

tional view of said head, taken on the line 8 8 of Fig. 7. Fig. 9 is a detail horizontal section on the line 9 9 of Fig. 7. Figs. 10 and 11 are detail perspective views of the plunger shown.

in different positions. Fig. 12 is a detail perspective view of the block carrying the springpawl. Fig. 13 is an inverted perspective view of the top portion of the head of the hammer. Fig. 14 is a perspective view of one side of the lower portion. Fig. 15 is a perspective view of the opposite side of the lower portion. Fig.

16 is a detail perspective view of the spring for holding the nail while being operated upon by the anvil.

In carrying out my invention I construct the head of the hammer of two sections, the upper section A and the lower section B, and this lower section is divided vertically vinto two parts B and B said parts being reduced at their upper ends and threaded, as shown at B", and upon which screws the upper section A, as most clearly shown in Figs. 1, 2, 7, and 8. The handle (J is preferablyconstructed integral with the lower section of the head, and it also is composed of two portions C and C the sections of the handle being held together by means of a connecting-block D, which has a dovetailed longitudinal projection D upon the bottom face thereof, which is adapted to engage the undercut face of the longitudinal ribs the outer face of said longitudinal ribs being engaged by the side extensions D formed upon opposite sides of the connectingblock, and by means of this construction the sections of the handle will be securely held together, it being understood that the connecting-block slides freely upon the handle for the purpose hereinafter explained. hen the handle-sections are connected, there is a vertical slot or opening E extending from one end of the handle to the other, said slot being enlarged at the top by means of the grooves E, produced in the contiguous face of the hammer-sections, said grooves being intended to receive the head of the nail F, while the slot receives the shank or body of the nail.

The handle constructed as herein shown and described constitutes the magazine of the hammer, and for the purpose of feeding the nails to the head of the hammer I employ a cushsaid block, said bore also containing the spiral spring G which presses against the block, and consequently forces the pusher forwardly or toward the head of the hammer, and inasmuch as the lower portion of said pusher rests within the slot in the handle and bears against the rearmost nail of the series. it is obvious that the spring-pressure upon said pusher will tend to feed the entire series of nails forwardly. The sections B and B of the head of the hammer are each provided with chambers in their contiguous faces, so that when the sections of the head of the hammer are placed together ample space will be provided for the parts necessary to effect the receiving of the nail from the magazine and the driving of the same into the wood. The section B is formed with an opening H, in which fits a block I, and it will be noted that the upper end of the opening H is curved, as shown at H, and the bottom reversely curved, as shown at H and that the ends of the block I are correspondingly shaped, as shown at I and I, so

that when the block is inserted and secured by means of a screw H it will be securely ency of which is to throw the pawl inwardly, so that it will engage and receive the head of the nail forced from the magazine, said nail resting upon the pawl and between the head of the pawl and the anvil. The other sideof the pawl is constructed with a curved shoulder L the purpose of which will appear hereinafter.

M indicates a plunger working in the chamber in the head of the hammer, said plunger being of a length substantially equal to the entire length of the head, and it will be noted that the upper section of the head is also provided with a chamber A, in which said plunger works, said chamber also containing acoilspring A which is adapted to bear against the head M of the plunger M. This plunger has a finger M extending downwardly from the head M to a point adjacent the center of the plunger, and just below the lower end of the finger M the plunger is cut away, as shown at M and the lower portion of the plunger is grooved, as shown at M", for the purpose of guiding the nail. A spring N is arranged in the lower portion of the head of the hammer, the free end thereof resting adjacent the plunger, the purpose of said spring being to hold the nail firmly against the said plunger.

In operation the magazine or handle is filled with nails and the connecting-block arranged upon the said magazine so that the pusher will contact with the last of the series of nails. The various parts are then in the position shown in Fig. 2, and by pressing upon the lower end of the plunger the said plunger is forced upwardly, and as soon as the finger M passes beyond the pawl L the foremost nail will drop upon said pawl and be held there. As soon as the pressure is removed from the plunger the spring A will force the plunger outwardly and the finger M will contact with the head of the nail. At the same time the plunger operating upon the curved shoulder L of the pawl will force the said pawl outwardly, so as to release the head of the nail, and the nail will be forced downwardly alongside the anvil and will finally pass beyond the same and will be held in such position by the spring N. By means of a short quick blow the nail can be started into the wood, and then by quickly pulling the head of the hammer away the nail will be left in the wood. When the nail is being driven in by the anvil, the plunger will be forced upwardly to the position shown in Fig. 7, thereby permitting the next nail to drop down into a position for feeding, and as these operations are continued the nails will be successively fed from the magazine or handle to the head or driving portion of the hammer, and after a sufficient numberof nails have been started the hammer'can be reversed and the nails driven completely home by striking them with the section A of the head. The spring-actuated pusherwill operate to feed the nails along the magazine, and by moving the connecting-block,which carries the pusher forward step by step as occasion may require, a constant pressure can be maintained upon a series of nails, and for the purpose of permitting this forward movement step by step I provide a spring 0, which is connected to the connecting-block and is adapted to engage the series of notches 0, produced in the undercut edges D of one of the sections of the handle.

In Fig. 1 I have shown an upper section A, having a hatchet-blade formed integral with the body portion of the upper section'of the head, thus combining a hatchet with the hammer.

It will thus be seen that I provide an exceedingly simple and eflicient construction of self-feeding or magazine hammer.

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

1. The combination with-a hollow hammerhead, of a handle formed in two sections spaced apart, longitudinal ribs on said sections, means for holding nails between the two sections, a slidable, grooved block adapted to fit over the ribs and hold the sections together,

means for advancing nails step by step to the head, and a plunger working in the head and adapted to receive the nails.

2. In a hammer of the kind described, a handle composed of two sections grooved as dethe handle-sections,substantially as described.

ranged therein, a spring-actuated plunger working in the said head said spring-actuated plunger having a depending finger, an anvil and a spring-actuated pawl arranged within the head of the handle, and a spring for bolding a nail against the plunger, substantially as set forth.

5. In a hammer of the kind described, the head composed of the upper and lower sections, the lower section being divided vertically as described, of a block fitted in one portion of thelower section, an anvil rigidly connected to said block, a spring-actuated pawl carried by the block, a plunger working in the head of the hammer and provided with means for engaging the pawl and the finger carried by the plunger and adapted to engage the head of the nail, and the spring arranged in the head of the hammer for the purpose of holding the nail against the lower portion of the plunger, substantially as described.

JAMES W. THOMPSON.

WVitnesses:

GEORGE CHANDLER, THOMAS CoLLINs.