US112719A - Improvement in machines for making and setting blind-staples - Google Patents

Description

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JEREMIAH KEITH, OF C/HARLTONQMVAS Letters Patent No. 112,719, dated March 14,

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IMPROVEMENT IN MACHINES FOR MAKING AND SETTING BLIND-STAPLES.

- l The Schedule referred to in these Letters Patent and making part of the same.

Taal! whom it may concern:

Bc it known that I, Ji-:nEMLtH KEITH, of Charlv ton, in the county of 'orcester and State ot' Massachusetts, have invented an Improved Machine for Making and Setting Blind-Staples; and I do hereby declare that the following, taken in connection with the drawing which accompanies and forms part of this specification, is a description of my invention sutticient vto enable those skilled in the art to practice it. l

My invention relates to a new construction or organization of machines for forming blind-staples and driving them into blind-slats and the'blind-slat rods, the invention consisting in the various details of arrangement and method of operation of the mechanism.

The drawing represents a machine embodying the invention..

A shows the mechanism in front elevation.

'B is an end view ofit.

C, a rear elevation.

a denotes the bed or frame, which, in connection with an upright, l1, supports the mechanism.

c is a verticaily-adjustable table, upon which the l Slat or rod to be"stapled is placed, the lower edge resting on this table, ami the upper edge extending under a shoulder, d, 4the back of the slat being supported against a vertical face, c.

The top ofthe shoulder d, and another shonlder,j, form ways, in which travels a reciprocating slide, f, on the front, and near the opposite ends of which are two plates g 71, in each of whichl is a horizontal hole for passage of the staple-forming wire i, said wire entering the machine through a. stationary eye-piece It, and passing under a spring-stop, I, which permits the wire to be drawn forward, but prevents its slipping back.

The wire passes under a spring-feeder, m, on thc slide f, and as the slide moves forward this feeder isv cramped down upon the wire and draws it forward with it, the projected end ofthe wire extending through a guide-eye, n, over a ledge or bed, o, through a guideeye, p, and over a beak or anvil, q, the guide-eyes being formed in a plate, 1', fastened upon the front of the upright` b. The inner face of the plate r, at its front end, is incliued,aud the guide-erop leads out to such face.

Over the face is a cutting-edge, s, on the bottom of a vertically-sliding bender-plate, t, the cutting-edge being the converse of the inner face of the plate r,

and so that, as itdesceuds, it strikes the wire at the end of the eye p andclips it 0d', cutting it on an angle, and thereby pointing it.

Before or just as the cutter reaches the wire, (in the descent of the bender t,) the bottom of the plate strikes the wire over the top ofthe beak q.

The bottom of the plate has a vertical slot, u, of a width exceeding the thickness of the former, and as the plate moves down it bends the opposite end of the wire over the beak q and down against its sides, and thereby forms the wire into a staple, the end of the wire projecting beyond the beak being ofthe length to form one ot the staple-legs, and the length ot' wire from the beak to the mouth ofthe eyepbeing the same, and forming the other leg.

'hen the staple is thus formed it-s two points are just above the edge of the slat to be stapled, and the bottom ofthe bender-plate descends against the slat and holds it.

The vertical movement of the bender is effected by a lever, r, one arrn of which extends into a, slot, w, in the bcuder-plate, and this lever is actuated byauother lever, ce, a piu, y, from one arm of which extends into a bent slot, s, in the lever lv.

After the lever-arm a2 has eicoted vthe movement of the bender-plate down upon the Slat the arm still further descends, but without imparting movement to the bender, and strikes the head ofa driver, b2.

The bottom ofthe driver is in line with the formed staple and over the beak, and just before the lever drives down the staple, an incline, ci, at the lower end of a lever, (Z2, is forced in between an arm` e,

-from the end of which projects the beak q, and the upright b, and presses said beak back from under the staple out of the path of movement of the driver, the upper' arm of the lever di havinga cam-slot, f2, into which projects the pin y, the pin striking one incline of the Yslot as it moves down, and thereby causing the lower end of the lever to force back the beak.

When the piu rises it strikes another incline ofthe slot and throws up the lower end of the lever', freeing the beak-arm, which is then pressed forward again by a suitable spring. v

The beak having been thrown back, the driver descends upon the staple and forces it into the slot.

When the next staple is formed by the descent of the bender, the driver gives way as the bender de scends.

The carrier or slide f is moved forward by the lower 'arm g2 of the lever I, the forward movement of this arm causing it to strike the plate h and more the slide, and withI it the wire, this movement taking place just after the same movement of'the levcr x has effected the rise of the cutter, bender, and driver, and the forward movement of the beak leaving these parts in position to receive the advancing end of the Wlle.

When the wire is being cui; and formed by the descent of the upper arm of lever x, the arm g2 moves back, striking the plate g, and returns the carrierslide to its normal position, the stop an. yielding and allowing the plates g h to slip upon the wire, the stop lholding the wire stationary during the back'movement ot'tbe carrier-plate. VFixedto the lever-arm s is a. cutter-stock 7L, having at its bottom end two cutters i, and just as the arm is completing its descent these cutters strike the opposite sides of the wire. cutting'npon euch side a nick. k, :1s seen at D, the wire'being subsequently cut off between the two nicks, so that a-nick is formed upon one end of one staple and one end of another by each action of the cutters.

The metal displaced in cutting euch nick forms a barb, which helps to confine the staple to the Slat.

When the Slat-rod is to have the staples applied t0 it, tbc table cis raised and fastened in position, to enable the slut-rod to be properly supported und presented to the action of the stnple-driving` mech anism. l

To feed the rod, n rocker-arm, l2, may be connected by a. link, m2, to the lever-arm g, and a projection, n,upon this arm, in its forward movement, strikes one of a'scries ot' teeth ou a strip or rae-k fastened to tbe rod.

"Vhen the slats are being stapled the link is unjointed from the lever, :ind the rocker-arm may then act as a presser to keep the sint up to the face e, for

2. In combination with the mechanism for cutting,

forming, and driving,r the wire-staples, the cutters i', for nieking;` the wire, substantially :ts shown und described.

3. In conibinaton with the bender und driver, the benk q, nmde to retreat after the wire is bent and hel'ore the driver deseen-ls, substantially ns described.

4. 1n combination with the feeding, cutting, heiniing, and driving mechanism, the :lrni l" and link m2,

for efecting the feed movcmenblof the shrewd, substantially ns described.

Witnesses:

E. C. THAYER,

Seru L. CARL-ESTER.

JEREMIAH KEITH.

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