US802932A - Automatic magazine nail and tack hammer. - Google Patents

Description

' No. 002,032. TATIINTND 00T. 24, 1905.

I. I. IIAMMNS 0 I. A. MAGNT. AUTOMATIC MAGAZINEJ NAIL AND TACK HAMMER.

APPLICATION FILED DEG. 30, 1904.

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FREDERIC J. HAMMES AND JOSEPH MAGEE, OF PHILADELPHIA, PENNSYLVANIA; SAID HAMMES ASSIGNOR TO ANNA D. HAMMES, OF PHILADELPHIA, PENNSYLVANIA.

AUTOMATIC MAGAZINE NAIL AND TACK HAMMER.

Specification of Letters Patent.

Patented Oct. 24, 1905.

Application filed December 30,1904. Serial No. 239,048.

To @ZZ/whom t may concern:

Be it known that we., FREDERIC J. HAMMEs and J osEPH A. MAGEE, citizens of the United States. residingin the city and county of Philadelphia, State of Pennsylvania, have invented a new and useful Automatic Magazine Nail and Tack Hammer, of which the following is a specification.

The object of our invention is'to provide a tack-hammer in which the tacks are retained within the device and are readily accessible and easily presented for driving processes.

A further object of our invention is to use a novel construction of magazine mechanism for placing the tacks in position to be driven.

Our invention further consists of novel details of construction, all as will be hereinafter fully set forth.

Figure 1 represents a perspective View of a construction involving our invention. Fig. 2 represents a fragmentary verticall longitudinal section. Fig. 3 represents a fragmentary vertical longitudinal section of one ond of our construction, showing the parts in a different position from that shown in Fig. 2. Fig. 4 represents a transverse section upon line y y of Fig. 2. Fig. 5 represents a transverse section upon line a .e of Fig. 2. Fig. 6 represents a bottom plan view of a portion of our device.

Similar numerals of reference indicate corresponding parts in the figures.

Referring lto the drawings, 1 designates a handle, to which is attached barrel 2, having at its opposite end head 3. Within this barrel is located a plunger 4, pressed forward by spring 5 and controlled from the exterior by projecting pin 6, passing through slot 7 in the under side of the barrel. Upon the opposite side of the barrel from slot 7 is placed a magazine having loading-aperture 9 and T-shaped groove 10` within which the heads of the tacks are adapted to move. The plunger 4 is provided with a lug 11, projecting into this T- shaped feeding-slot and engaging with the heads of the tacks. This plunger is drawn back until block 11 is behind the loading-aperture before the tacks are put in. They are then inserted singly and allowed to drop down toward the head of the mechanism, the points of the tacks being directed toward the center of the barrel.

When the magazine is sufficiently loaded,

in line therewith.

the plunger 4 is allowed to engage with the heads of the tacks, and its spring engagement therewith constitutes a continual feeding force of approximately uniform pressure. The magazine in the form shown is attached by screws with aperture 15 and sliding bar 16 Bar 16 is pressed toward its retracted lposition by spring 17 in groove 18 of the head pressing against lug 19, projecting from said bar and maintained-centrally of said lug by pin 20. The head of bar 16 is provided with spring-clips 21 and stop 22. l

The head 3 is formed in two parts, of which 23 is rigidly attached to the barrel and 24 is removable therefrom, the parts 23 and 24 thus providing a casing, within which are located the bar 16 and cam 25. This cam is mounted upon shaft 26, upon the outer end of which beyond part 24 is located gear 27, engaging segmental rack 28, which is pivoted upon screw 29. Eccentrically of this pivot-point 29 is attached rod 30 by screw 31.

Rod 30 passes through guide 32 upon the side of the barrel and is pressed forwardly from said guide by a spiral spring 33. Upon the opposite end rod 30 is pivoted to one arm of a three-armed lever 34 by screw 35. One of the arms 36 of this lever-is pivoted at 37 to lug 38, rigidly attached to the barrel or to the magazine at this point.

Trigger 39, forming the third arm, is so located that strain upon it will draw rod 30 toward the handle of our device against the pressure of the spring 33 and will throw rack 28 and turn cam 25 to the position shown in Fig. 3. Bar 16 under pressure of spring 17 will follow up this cam and also come to the position shown in Fig. 3, in which position a tack is Jfed between the spring clips or jaws 21 and against stop 22. Release of the trigger 39 results in the return of the bar to the position shown in Fig. 2 with the tack in place,

as there shown. In Vthis position the tack may be driven as with an ordinary hammer, but without danger of accidental release of the tack or of the hammer failing to strike the same properly. l

It will be evident that various changes may be made by those skilled in the art which will come within the scope of our invention and we do not. therefore, desire to be limited in every instance to the exact construction herein shown and described nor to the use of the device for tacks, as it is equally serviceable for feeding and driving nails, rivets, and the like.

Having thus described our invention, what we claim as new, and desire to secure by Letters Patent, is-

1. In a magazine tack-hammer, a trigger, a spring-pressed pivotally-mounted segmental rack, a pinion engaging therewith, a cam movable with said pinion, a vertically-reciprocatory bar in constant engagement with said cam, a magazine, means for feeding the tacks in said magazine and means upon the head of the bar for yieldngly holding one of said tacks.

2. In a magazine tack-hammer, a verticallyreciprocatory bar, a spring pressed cam, means for moving said cam to reciprocate said bar, means upon the head of the bar for holding a tack thereon and means for feeding a tack tothe end of said bar.

3. In mechanism of the class described, a magazine, a spring-retracted tack-holder movable at an angle thereto and capable of aline- Inent therewith, a spring-pressed cam, and

cam-operatngmeans for vertically reciprocating said tack-holder.

4f. In mechanism of the class described, a barrel,atrigger in proximity thereto, aspringretracted rod operated by said trigger, a rack eccentrically connected with and operated by said rod, a tack-holding mechanism mounted for vertical reciprocation and means whereby the operation of the rack moves said tackholding mechanism.

5. In mechanism of the class described, a pivotcd trigger, a cam, a gear, a segmental gear engaging the same and spring-pressed means lntermediate said segmental gear and trigger for actuating said cam, and a reciprocable tack-holding means constantly held in contact with said cam.

FREDERIC J. HAMMES. JOSEPH A. MAGEE.

Witnesses:

JOHN A. VVIEDERSHEIM, S. R. CARR.

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