US402061A - Machine for making tack-strips - Google Patents

Description

' (No Model.) 2 Sheets-Sheet 1.

M. BROOK. MACHINE FOR MAKING TACK STRIPS.

110.402.061. Patented Apr. 23, 1889.

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2 Sheets-Sheet 2.

MAGHINE FOR MAKING TACK STRIPS.

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PatentedApr. 23, 1889.,

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UNITED STATES PATENT OFFICE.

MATTHIAS BROOK, OF BOSTON, MASSACHUSETTS, ASSIGNOR TO THE MCKAY & COPELAND LASTING MACHINE COMPANY, OF PORTLAND, MAINE.

MACHINE FOR MAKING TACK- STRIPS.

l SPECIFICATION forming part of Letters Patent No, 402,061, dated April 23, 1889.

Application filed December 18, 1888. Serial No. 298,943. (No model.)

To all whom itmay concern.

Be it known that I, MATTHIAS BROOK, of Boston, county of Suffolk, State of Massachusetts, have invented an Improvement in Machines for MakingTack-Strips, of which the following description, in connection with the accompanying drawings, is a specification, like letters on the drawings representing like parts.

This invention is intended as an improvement upon the class of machines represented in United States Patent No. M2143, dated September 13, 1881. That patent describes mechanism for driving tacks into a strip of paper, the heads of the tacks being covered by a second paper strip, so as to retain the tacks in place as the said strip is used in a machine for driving the said tacks. In the machine described in the said patent the tacks, when driven into the strip, are engaged by a feed-Wheel to feed the strip, the feed movement depending upon the insertion of a tack in the strip, and the tack as it is driven is made by its point to actuate parts which permit the pawl for moving the feed-wheel ratchet to come into operation. In this way the points of the tacks are frequently so blunted that they cannot be properly driven. To obviate this difficulty I have constructed a machine in which the strip, after each tack is properly driven, is fed forward by the action directly against the last tack driven of a reciprocating feeding-finger made as a pawl, the pawl part of the said finger co-operating with a ratchet-wheel forming part of a spacing mechanism, to be described, whereby, after the insertion of a given number of tacks into the strip, the said strip will be fed a greater distance, to thus leave a space through which the strip may be severed, to thus cut the substantially continuous strip into short stripsfor use in machines having means for driving the said tacks from the strip into the article to be united or produced.

My invention in tack-strip-making machines consists, essentially, in'a' slotted roadway to receive the shanks of the tacks driven into a the strip, a driveway or throat, and a driver,

combinedwith a reciprocating slide having a finger provided with a shoulder to act against a tack after the same has been driven into the said strip, thereby feeding the same along the said roadway, substantially as will be described; also, in the combination, with a ratchet-wheel, of a finger having a projection and an inclined surface, and a shoulder, combined with means to move the said finger in the direction of the tack last driven into the strip, the presence of a tack acting through the beveled face of the finger to cause the engagement of the finger with the rotation of V the ratchet-wheel, substantially as will be described; also, in the combination, with a driveway or throat and a driver and a ratchet-Wheel, of a reciprocating pawl having an incline to act against a tack driven into the strip and throw a projection of the said pawl in to engagement with the ratchet-wheel, and with means to move the said finger, substantially as will be described.

Figure 1 is a side elevation of a sufficient portion of a tack-strip-making machine to enable my invention to be understood. Fig. 2 is a top or plan view of Fig. l, but with the driver and throat or driveway omitted. Fig. 3 is a right-hand end view of the parts shown in Figs. 1 and 2, with the post to support the rear end of the roadway broken out. Fig. 4 is an enlarged plan view of the finger a, with a portion of the foundation-strip of paper in place. Fig. 5 is a plan View of the rocking sleeve detached. Fig. 6 shows in front and side elevation a lever, 6 detached; Fig. 7, a modified form of finger, and Fig. 8 a detail showing the lever 34. Fig. 9 is a sectional detail showing the driveway or throat enlarged, with a driver therein and a tack about to be thrust out of the throat; Fig. 10,

'a sectional detail, chiefly to exhibit the hollow sleeve a and parts carried by it; Fig. c 11, details showing the lever d detached. Fig. 12 is a top or plan view of the carriage removed from the machine, and Fig. 13 a detail showing the lever f.

The driver C and the driveway or throat in which the tack enters to be driven by the driver into the paper or other strip, and the arm d and the roadway E in which travel the shanks or bodies of the tacks after they have been driven into the usual paper or other I00 strip, (shown only in Fig. 4,) are the same as in the said patent, the tack-strip lying upon the said roadway and being moved intermittingly thereon in the direction of the arrow 2 by devices to be described.

It will be understood, in practice, that the machine herein described will be provided with suitable mechanism or devices to feed the tacks singly into position under a driver and with a driver and means to move it to drive the said tacks or usual nails into a paper or other strip. The patent referred to shows one form of such mechanisms or devices which may be employed for such purpose, and as my invention does not include any special form of tack-driving mechanism or race for delivering the tacks to the driveway or throat I have omitted from the drawings the tack driving and presenting devices, except the driver and the driveway or throat, which, as stated, are and may be as in the said patent.

The frame-work A of the machine contains bearings for the diiferent working parts.

Referring to the drawings, it will be noticed that the roadway E or a part coinciding with it, is extended toward the right-hand end of the machine, and is provided at its upper side (see Fig. 2) with a groove, 2, of dovetail shape in cross-section, the said groove receiving in it a dovetail projection of a slide, a, upon which is pivoted at 3 a feeding-finger, a, (see Fig. 2, and enlarged in Fig. 7,) having a beveled side, 4:, a shoulder, 80, and a projection, 5, which project-ion, when a tack is properlypresented to the finger in its forward movement, is made to enter as a pawl the teeth of the ratchet-wheel a and rotate it, the said wheel a being attached to a sleeve, a the lower end of which rests on the base-plate of the frame-work.

The sleeve a (see Fig. 1) has secured to it a bevel-gear, a which engages a bevel-pinion, a mounted loosely on a stud, 6, held in the stand a by a nut, a The sleeve a receives through it and is free to rotate about a shouldered vertical stud or bolt, a The hub of the pinion a has secured to or forming part of it a shoulder-plate, 13, and loose on the stud 6, at one side of this plate 13, is a disk, 19, forming part of the spacing mechanism,the said disk having a notch, 8, in its periphery (see Fig. 3) and a cam portion, 0. The plate 13 referred to receives in it a screw, 10, which is passed loosely through a slot, 12, in the said disk and in the said cam c, the said slot 12 permitting the said cam and disk to be changed as to their relative positions during each rotation.

The roadway-extension E referred to at the right-hand end of the machine is enlarged or extended laterally, as at E the under side of the said enlargement (see Fig. 3) having a groove of dovetail shape, which groove receives in it a projection, 20, of dovetail shape, the said projection forming part of a sliding carriage, d. This carriage has a fixed stud,

d, (see Fig. 3,) extended from one side thereof,

upon which is mounted to turn a lever, 1),

shown as composed of a sleeve portion having at one end a short arm, 14, and at its other end a long arm, 15, having a pin, 16. (Shown by dotted lines in Figs. 1 and 2 and by full lines, Fig. The arm 14 normally rests on the periphery of the disk 1'), and the pin 16 enters a slot, 17, (shown by dotted lines, Fig. 1,) in a lever, 6 mounted loosely upon a headed stud, 18, held in stand I) by a nut, 12. The arm 14 has attached to its inner side a spring, 21.

In the rotation of the disk b,when the notch 8 thereof arrives under the arm 14 of the rocking sleeve 1;, the said arm, and also the arm 15, drops, and the pin 16 is moved. down in the cam-slot 17 of the lever 6 The lever (Z mounted loosely on the sleeve and moved as in the said patent, has erected upon it two studs, as 22 23. The stud 22 enters a transverse slot at the under side of the sliding carriage (Z. The stud 23 enters a cam-slot, 24, at one end of apawl-moving lever, 25, pivoted at 26 upon a rigid part of the frame, the said lever at its end opposite the said slot 2% having a pawl, 26*, (see Figs. 2 and 3,) attached thereto byaknuckle-joint of any usual construction, the said pawl in practice being normally retained pressed against the side of the disk I), and also against the periphery of the cam c, as in Fig.

The frame-work c has a suitable guideway, in which slides vertically a presser-foot, e, provided, preferably, with a block, c of indiarubber or other suitable elastic material to act upon the pasted strip, (not shown, but of usual construction,) which strip is to be pasted down upon the usual foundation-strip, w, in which the tacks are driven, but not, however, until after the said tacks have been driven.

The presser at its outer side has a slot which receives apin, 28, of an elbow-lever, f, (shown in Figs. 1 and 2,) the said lever beingmounted loosely on a stud, 29, that arm of the said lever f which is extended upwardly having jointed to it one end of a connecting-rod, f, which rod at its other end is jointed bya pin to an ear of the sliding carriage d.

To cut the substantially continuous strip at the proper timeas, for instance, after a predetermined number of tacks have been driven into the strip wI have provided the machine with a slide, g, having a knife, g, the said slide deriving its movement from a lever, g having its fulcrum 011 the stud 29, the inner forked end of the said lever (see Fig. 1) engaging a pin, 33, at the forked end of a bell-crank lever, 34, the upper end of which has a laterally-extended arm, 35, (see Figs. 2 and 8,) which arm is struck at stated intervals by a projection or part of the lever b when the same has imparted to it its abnormal long stroke, as Will be described, the finger at at such time having about twice or, it may be, more its usual throw, to thus give to the tack-strip a long feeding movement suflicient to leave a space between the tack last driven and the tack next to be driven,

IIO

through which space the cutter described may act on the strip to sever it. v

The lever 192, as will be understood from the foregoing description, derives its motion from the pin 16, moved bythe carriage d, and the extent'of movement of the said lever is more or less according to the position of the pin 16 in the slot 17, 1 The lever 11 has a branch, 36, which is extended under and up at the outer sideof the race E where the forked end of the said branch embraces a block, 37, on a :pin, 38,extended outwardly from the slidea,

carrying the finger a',' Consequently the finger a. is moved at times for a greater distance than at other times, the greatest movement taking place whenthe strip is to be fed for a long distance, so as to leave a space for severingthe strip.

In operation a tack having been deposited in usual manner in the driveway or throat is acted upon by the driver-bar and is driven ;-down into and through the tack-strip w in usual manner. As the finger a is moved forward after driving the tack, the beveled side 4 of the finger acts against the body of the driven tack, and as the finger is moved for- ;ward the projection 5 of the finger enters a space between the teeth of the ratchetwheel a and thereafter in the further forward movement of the finger the projection 5 rotates thesaid ratchet-wheel for the distance 3 of onetooth, and the shoulder 80 of the finger a, by coming squarely against the body of the tack, moves the foundation-strip w forward. If the driver fails to drivea tack into "the foundation-strip, then it will be obvious that the finger a will not be turned aside to cause i 21, attached to the arm 14, preventing the descent ofthe said arm let until. the lever (1 has completed its full backward stroke. -Were it not for the spring 21 the arm 14 would drop into the notch 8 at the commencement of the backwardthrow of the lever 01 in the direction of scended into the bottom of the cam-slot 17,-

the arrow 40, and would cause the lever 19 to be moved back twice as far as desired, which is unnecessary. The arm let having dropped into the notch S and the pin 16 having dethe lever (Z in its forward movement, as described, effects a' movement of the lever 6 the slide a, and the finger a for twice its usual distance, so that the shoulder 80 of the said finger again, strikes the driven tack against which it last acted and gives to the strip w an additional movement to leave a sufficient space between that tack and the one next to be driven for the cutter to rise and cut the strip. As the lever (Z arrives in its farthest backward position in the direction of the arrow 40, as stated, the free end of the pawl 26* drops from the high part of the cam 0 down upon its low part, and as the lever 01 is thereafter moved forward to cause the shoulder 80 of the finger af to act upon a tack in and feed the strip, the pin 23 of the lever 01 working at the same time in the slot 24 of the lever 25 andturning the said lever so that the said pawl acts upon the shoulder of the cam c, and pushes the said cam and the plate b forward on the shoulder 13, such movement being permitted bythe slot 12. As the plate I) is moved, as described, by the pawl 26* and the cam c, the cam part of the notch 8, acting on the arm 14, turns the lever b and moves the stud 16 of the arm 15 thereof upwardly in the slot 17. In the further rotation of the cam 0, while the pawl 26* rests upon the portion of the said cam of smallest diameter, the said cam has its movement somewhat retarded, so that the opposite end of the slot 12, or that end of the slot in the direction of movement of the cam 0, comes against the screw-stud 10.

Referring again to the finger a, it will be noticed that it has a toe, 82, which is somewhat upturned neXt that edge of the foundation-strip to which is provided with the notches w. In practice this foundation-strip, preferably composed of paper and about one-quarter of an inch in width, has notches w in one edge about one-sixth of an inch apart, that being about the distance of each feed movement of the foundation-strip. This toe 82, as the finger is moved aside by reason of the contact of its beveled face 4.- against the body of a driven tack is made to enter one of the notches w of the strip, thus aiding in feeding the strip. This finger may be made to move the strip incase it is not desired to push upon the tack.

I claim 1. In a tack-strip-making machine, a slotted roadway to receive the shanks of the tacks driven into the strip, the driveway or throat, and a driver, combined with a reciprocating slide having a finger provided with a shoulder to act against a tack after the same has been driven into the said strip, thereby feeding the same along the said roadway, substantially as described.

2. In a tack-s trip-makin g machine, a ratchet-wheel, a slide, a finger mounted thereon having a projection, an inclined surface, and a shoulder, combined with means to move the said slide and finger toward the tack last driven into the strip, the presence of a tack in the strip acting against the beveled face of the finger and causing the projection of the finger .to engage and move the said ratchetwheel, substantially as described,

3. In a tack-strip-making machine, the combination, with the slide and its finger having a projection and'an inclined surface and a shoulder and the ratchet-wheel, of a spacing mechanism, substantially as described,-

whereby the strip is moved for a greater dis tance at stated intervals, substantially as described.

4. In a tack-strip-making machine, the combination, with the slide and its finger having a projection, an inclined surface and a shoulder, and the ratchet-wheel, of a spacing mechanism, substantially as described, whereby the strip is moved for a greater distance at stated intervals, and with cutting mechanism to sever the strip at intervals, substantially as described.

5. In a tack-strip-making machine, the slide having upon it a feeding-finger, the lever I), having arms 14 15, and a pin, 16, combined with a slotted lever, b and a cam to control the movement of the 1e"er l), as and for the purposes set forth.

6. In a tack-strip-making machine, the lescribing witnesses.

MATTHIAS BROOK. Witnesses:

G. W. GREGORY, B. DEWAR.

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