US406075A - Albert white - Google Patents

Description

(No Model.) 2 Sheets-Sheet 2. A WHITE STAPLE DRIVER.

No. 406,075. Patented July 2,(1889.

"LUI tr] 255515 ZMMWQW NITE STATES PATENT OFFICE.

ALBERT WHITE, OF LOVELL, MASSACHUSETTS, ASSIGNOR TO FREDERICK TAYLOR, OF SAME PLACE.

STAPLENDRNER.

SPECIFICATION forming part Of Letters Patent N0. 406,075, dated July 2, 1889.

Application filed June 2l, 1888. Serial No. 277,811. (No model.)

To all whom t may concern:

Be it known that I, ALBERT WHITE, a citizen of the United States, residing at Lowel1,in the county of Middlesex and Commonwealth of Massachusetts, have invented a certain new and useful Improvement in ,Staple-Drivers, of which the following is a specification.

My invention relates to staple-drivers.; and it consists, principally, in means, hereinafter described, for holding said staples, means for feeding said staples, one at a time, to the plunger, means for preventing a second `staple from getting under the plunger until the first staple Vis discharged, and in the devices and combinations hereinafter described and claimed.

In the accompanying drawings, on two sheets, Figure l is a vertical central section of the vertical part of the frame, the knob or handle, and the plunger-lifting spring, and a front elevation of the horizontal arm of the frame, the staple-carrying bar, thespring which retains said bar in position, the follower, the spring which actuates the follower, the plungemthe spring' which prevents the return of the plunger, and of staples arranged on the staple-carrying bar, the middle portion'of the horizontal arm and staple-carryin g bar being broken out and turned ninety degrees, and shown in cross-section; Fig. 9, a vertical central section on the line a: Je in Fig. l; Fig. 3, a left side elevation of a part of the plunger, the upper part of the frame, the spring which prevents the return of the plunger,an d the lever which disen gages said spring from the plunger; Fig. l, a perspective view of said lever; Fig. 5, a section on the line y y in Fig. l Fig. (i, a rear elevation of apart of the horizontal arm, staple-carrying bar, and bar-retaining spring, the follower and a part of the cord attached to the same, showing the follower arranged in its retaining-notch; Fig. 7, a perspective view of the spring shown in Fig. G; Fig. 8, a horizontal section on the line z z in Eig. 2 Fig. 9, a front elevation, and Fig. 10 a side elevatiolnof the shoe; Fig. 1l, a right side elevation of the plunger, except the'knob, and of the frame, the follower-cord, and its actuating-spring; Fig. l2, a rear elevation of the staple-driver, the outer ends of the horizontal arm and stapleca1'rying bar being,`- omitted; Fig. lil, a right side elevation of the lower part of the frame, showing the wiregripping lever; Fig. it, a rear elevation of the lower part of the frame, adjacent parts of the horizontal arm and staple-carrying bar, and a rear elevation of the wire-gripping lever, the staple-driver in Figs. lf3 and il being shown applied to a wire; Fig. l5, a central vertical section of the vertical part of the frame and an elevation of the plunger, its retaining-spring, a front elevation of a part of the horizontal arm and a part of the staple-carrying bar, staples arranged on said bar, and the follower, the plunger being depressed below the staple-carrying bar and held from rising by said spring or pawl.

The. frame or stock A is provided with a horizontal arm A', formed, preferably, in a separate piece therefrom and riveted or otherwise secured thereto, the line of division between the two parts being marked r1. (See particularly Figs. l2 and le.)

The plunger B is preferably cylindrical throughout the greater portion l) of its length, the lower portion b of the same being rectangular in horizontal cross-section and as large as a similar section of the staple C to Ibe driven thereby, the upper portion of the plunger sliding in a vertical hole a in said stock and the lower portion of said plunger in the rectangular hole c2, arranged vertically in the lower portion of `the stock. Dividing the stock on the line a allows the vertical contiguous faces of the stock proper and arm A to be the one plane andthe other grooved at a2 toJ receive and fit the rectangular part of the plunger. \Vithin the central cavity ai of the frame A a spiral spring S surrounds the plunger and is compressed between the shoulder a* and an annular collar o on said plunger, said collar being adjustable on the plunger to vary the compression of the spring and being held by a set-screw c, which turns in said collar and vthrusts against said plunger. A stop a? (represented in the drawings as a screw) limits the upward motion of the plunger, and is so placed as to allow the lower end 'of the plunger to rise just above the staplecarrying bar D, hereinafter described. The

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downward movement ofthe plunger is limited by the knob or enlarged head B', secured to the top of the plunger and adjustable thereon, the upper end (Z2 of the plunger being screwthreaded and entering a threaded hole b3 in said head, so that by turning the head on the plunger the length of the stroke of the plunger may be varied todetermine the distance to which a staple driven by a full stroke of the plunger shall project from the surface into which it is driven.

` The staple-carrying bar D is a horizontal bar, over which are placed the staples C, the endof said bar entering a hole (1,8 into the groove a2, and the staples are drawn along toward said groove by a follower F, which straddles the bar D, and is drawn toward the plunger by a spiral lspring E, the upper end of which is secured to the vertical part of the frame A and the llower end of which is provided with a ring or eye e, through which is passed a cord F', one end of which is secured to a stud or l screw f, driven into said frame below lsaid spring E, and the other end of which passes through said frame andv is coni.

nected to said follower.

The staple-carrying bar D' is arranged-horizontally below the arm KA', and is supported at'one end in the hole as and at the other end' by a leaf-spring D of the form shown in Fig. 7, one end of which last-named spring is se cured tothe top of the arm A andthe other end of which is bent under the outer end of the bar D, the spring Vjust -above its lower end pressing against the outer end of the bar D and being provided with years d3 d4, which prevent the bar D from, lateral motion. The

innerend of the bar D is rounded or beveled oft' on top at "d5 for a distance sufficient to al'- low the plunger to crowd said bar D longitudinally outward. The bar D when the plunger is raised is forced by the spring D against the plane surface of the main part of the frame A, as shown in Fig. 1, so that there will always be when the bar D is iilled with staples andthe plunger is raised, one staple immediately below the plunger so that depressing the plunger will crowd one staple downward oif from the inner end-of the bar D and discharge it from the lower end of the frame A. .By pulling the lower end of the spring D outward the barD may be removed for the purpose of filling it with staples, and

at such times the follower may be conven' iently held in the dovetail notch a forlned in the under side of the arm A', the follower being rst'drawn upward into the outer deeper part of saidv notch a." until the inner end, of the follower can be lifted into the inner shallower part of said notch, against which it will be drawn by the spring E and cord'F, the follower being retained in said notch, owing to the fact that the opening of the notch is narrower than the follower. The spring F. and a part of the cord F are concealed and protected by a shield or guard A2, secu red by screws am to the frame A.

In order that a second staple may not getunder the plunger before the 'rst staple isl driven or discharged from the staple-driver, the plunger is the staple-carrying bar after the iirst stroke is given to the plunger by notches in the vshank of' said plunger, and by a spring-pawl G, of the form shown in Figs. Vl and 2,'the free end of which is bent`horizontally, passes through a hole' am in the frame, and engages said notches, the vertical part of said spring G lying in a groove'a in fthe outside of said frame and being held in spring G being bent, as shown at g2, and the The pawl Gis disengagedfrom the notches a by a lever, preferably formed of wire, and bent into the form vshown in Figs. 3 marked H. The middle of the lever His bent into a loop h, and the parts h Hh2 of the wire or leve' nearest to said loop are bent out from said loop horizontally in'opposite directions and rest in transverse grooves a. inthe side ofthe frame A. The portions of the wire or lever H nearest the ends of the same are bent so as toflie nearly against the front and back of said frame at an angle with the plane of said loo verpare held in said groove 0.14 by the press- .ure of the spring-pawl G.` It is evident that by depressing the free ends of the lever H the loop h'will be forced against the spring-pawl 'and cause said pawl to be disengaged from the notches a. and allow the plunger to be raised 'by the spiral spring, as above de'- iscribed.v Inpractice the verticalpart of the frame A is grasped by the left hand and the plunger is struck by the right hand, or by a mallet held in the right hand. To avoid in jury of the surface into which the staples are to be driven, a foot'AS, having a large surface, as shown in `Figs.'9 and l0, may be applied to the lower end of the vertical part of the frame and retained thereon by a set-screw al". The lower end of the frame is provided which it is intended to secure by staples, and 'in order that the wire may be held taut a gripping-lever K is pivoted at loto the side of the frame, being let into a recess a in said k or upper end of said lever' being bent around onto thel back side of the frame into a position' to allow of its being grasped by the Ybetween said lower end and theI back side of from the lever, the lever is restored to position by the spring k2, arranged between .the handle of the lever and the frame.

I claim as my inventionwith notches, the spring to return .the same, and a spring-pawl ,engaging said notches to prevent the return of said plunger to its prevented from rising above' said groove, by a cap-screw g', the wire orhead of said screw resting'upon the same.

and 4 and with a transverse groove al, to admit a wire the groove als. Vhen the 1in gers are removed l. The combination of the plunger providedh, and the horizontal portions of said le- IOO IIO

frame, iiush with said frame, and the handle fingers of 'the left hand to bring the lower end l n of said lever against the wire, which is grasped J- startingpoinu as and for the purpose specilied.

2. The combination of the frame provided with a staple-guiding groove and with a hole opening laterally into said groove to admit staples, the plunger provided with a collar, a spring surrounding said plunger within a central cavity, with which said frame is provided, and compressed between said collar and a shoulder in said central cavity, said plunger being provided .with notches, and a spring-pawl to engage said notches and prevent said plunger when forced downward from rising above said hole and admitting a second staple below said plunger, as and' for the purpose specified.

a. The combination of the frame provided with a staple-guiding groove and with a hole opening laterally into said groove to admit staples, the plunger provided with a collar, a spring surroundin g said plunger within a central cavity, with which said frame is provided, and compressed between said collar and a shoulder in said central cavity, said plunger being provided with notches, a springpawl to engage said notches and prevent said plunger when forced downward from rising above said hole and admitting a second staple below said plunger, and a lever turning on said frame to force said pawl out of said notches to allow said plunger to be raised, 'as and for the purpose specified.

l. The combination of the frame, the staplecarrying bar removable therefrom, and the spring-impelled follower arranged to travel on said bar, said frame having an arm arranged above said staple-carryin g bar and provided with a notch to secure said follower to said frame while said.staplecarrying bar is removed therefrom and to hold said follower in a position to receive said staple-carrying bar when said baris replaced in said frame, as and for the purpose specified.

5. The combination of the frame, the plunger movable therein, avspring attached to said frame and provided with a loop, a cord one end of which is attached to said frame and the other end of which is attached to a follower, said follower, and a staple-carrying bar ou which said follower travels, said cord passing through said loop to draw said follower on said bar toward said plunger to feed staples on said bar under said plunger, as and for the purpose specified.

6. The combination of the frame provided with a horizontal arm and with a hole, a spring secured to the free end of said arm, and a staple-carrying bar adapted to be engaged by said hole and said spring and to be held in place thereby, as and for the purpose specified.

7. The combination of the frame provided with a horizontal arm and with a vertical staple-guiding groove and with a hole opening into said groove, a staple-carrying bar having the top of its inner end beveled olf, said inner end being adapted to enter said hole and to be held centrally therein by staples on said bar, a spring secured to the free end of said horizontal arm to engage the outer end of said staple-carryin g bar, and a plunger moving in said frame at right angles tosaid staple-carrying bar, as and for the purpose specied.

8. In a staple-driver, the combination of the frame provided with a groove to receive the wire to be secured bystaples, and a grippinglever pivoted on said frame within a recess formed in said frame to grasp a wire between said lever and the side of said groove, as and for the purpose specified.

In witness whereof I have signed this specication, in the presence of two attesting witnesses, this 12th day of June, A. D. 1888.

ALBERT VHITE.

Vtnesses:

ALBERT M. MooRE, KIRKLEY HYDE.

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