US402069A - Machine for making tack-strips - Google Patents

Description

(No Model.)

J. A; OROSBIE. v MACHINE FOR MAKING TACK STRIPS.

No. 402,069. Patented Apr. 23, 1889.

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UNITED STATES. PATENT OFFICE.

JOHN A. OROSBIE, OF METHUEN, MASSACHUSETTS, ASSIGNOR TO THE MCKAY & COPELAND LASTING MACHINE COMPANY, OF-PORTLAND, MAINE.

MACHINE FOR MAKING TACK-STRIPS.-

SPECIFIGATION forming part of Letters Patent No. 402,069, dated April 23, 1889.

Application filed October 18, 1888. Serial No. 288,434:- (No model.) I

To an whom, it may concern.- out of engagement with the feed-ratchet, thus Be it known that I, JOHN A. OROSBIE, of leaving the feed-wheel at rest. Methuen, county of Essex, State of Massachu- Figure 1 shows a sufficient portion of a masetts, have invented an Improvement in; Machine for making tack-strips to enable my in- I 5 chines for Making Tack-Strips, of which the vention to be understood, atack having been following description, in connection with the presented in the strip;-Fig. 2, alike view, but accompanying drawings, is a specification, with the pawl-controller in a different posilike letters on the drawings representing like tion, as itwill be when a tack has not been par spresented. Fig. 3 is a view of Fig. 1, looking 10 This invention has for its object to improve at it in the direction of the arrow 2; and Fig. the machines described in United States Pat- 4, a partial right-hand elevation of Fig. l. ents Nos. 230,386 and 247,143, to which ref- The feed-Wheel D, pawl 0, detentpawl O, erence may be had. In the patents referred lever (1 having the slot (Z and the roadway to a series of tacks are driven into a strip of E are and maybe all'as in United States Pat- .15 paper, and the feed movement of the paper is cut No. 247,143, wherein like letters are used made dependent upon the insertion of atack to .designate like parts. The feed-wheel D at the proper time. In these machines renext its under side has fastened to it a gear, ferred to the point of each tack is made to a, and the said gear has fixed to it a ratchetdepress a spring-supported latch, and therewheel, I), the feedrwheel, gear, and ratchet- 20 after thefeed-wheel is rotated; butif the latch Wheels being free to rotate in unison about is not depressed the feed-wheel stands still. the stud a. The gear a and the ratchet b In practice it often happens that the needleare shown but not lettered in the said patent. points of tacks being inserted in the strip These parts, with the exception of the pawl 0,

. are blunted by striking the said latch or a are all to be actuated as provided for in the 25 part thereof to depress the latch, as stated. said patent.

The object of this invention is to prevent The pawl 0 is mounted upon a bell-crank the blunting of the tacks. In this invention lever, c 0, (shown partially by dotted lines, the side of the tack is operated upon above its Fig. 1,) having its fulcrum on the stud a, the point or between the point and head by a end 0 of the said lever being downturned,

3o feeler, which, whena tack is present, enables (see Fig. 3,) and having connected to it by a the usual feeding-pawl to act..upon the feedscrew, 3, a support, 0 which is extended upratchet and move the feed-wheel, and with it wardly almost to the under side of the feedthe strip in which the tack has been driven; wheel D, the said support normally standing but in case a tack has not been entered into at one side of a notch in the feed-Wheel, in

3 5 the strip then the feeler acts to prevent the which is to descend the tack which is to be feeding-pawl from engaging the feed-ratchet. inserted in the paper or in the strip 5, the said In the present embodiment of this invention support being so located that the point of the the feeler is made to act upon a pawl-contack in its passage through the said strip cantroller which directly engages the said pawl not meet the top of the support. 40 when the feed-ratchet is not to be moved. The roadway-block, as herein shown, hasa The tack while being acted upon by the feeler lug, 4, on which is erected a stud-screw, d, is supported laterally between its ends, so as which serves as the fulcrum for the feeler, not to tip. composed, essentially, of a lever, d, having a,

My invention consists, essentially, in the blade, as d", which, after each descent of the 45 combination, with a feed-wheel and its actudriver (not herein shown, but common to the ating-pawl, of a feeler and means between it patents referred to) has driven a tack into the and the said pawl whereby when the tack is strip .9, is moved to press the blade d against present the feeler permits the pawl to actuate the body of the tack in the strip, the body of the feed-ratchet and feed-wheel, and when the which tack below that part thereof which is 50 tack is absent causes the pawl to be thrown acted upon by the blade d at such time rest- I00 ing close to or against the side of the support 0 This feeler derives its motion of vibration from a pin, 6, projecting from a lug, 7, e011- nected to or forming part of the arm or lever d", the said pin at each movement of the said lever (1" in the direction of the arrow 8 withdrawing the blade (Z to permit the descent of a tack through the strips andthrough one of the openings directly under it at the edge of the feed-wheel, and after the descent of the usual. driver to drive a tack the lever (15 is moved in the opposite direction, permitting the spring 6, connected to a fixed stud, 10, and to the pawl-controlling lever e, pivoted at 12, to act upon and turn the said lever, so that the latter through a slide-pin, 13, or its equivalent, a link, acts upon the end of the feeler-lever opposite the blade (I and causes the said lever to be turned with a yielding pressure in the direction to place the edge of the blade (i against the body of the driven tack close to the under side of the feed-wheel D. Vhen a tack is present in the strip and the blade comes in contact with it, the tack acts to limit the movement of the feeler-lever, and consequently of the controller-lever c, so that the latter is prevented from moving far enough under the action of the spring 6 to place the notched part 1a of the controller in the path of movement of the pin or lug 15, erected upon the outer end of the pawl 0, which is moved to engage the ratchet-wheel Z2 and rotate the feed-wheel D, the lever c c, carrying the pawl 0, as herein shown, derivingits motion in the direction to cause the pawl 0 to move the feed-wheel by the pressure against the support 0 or it may be the arm 0' of the said lever c c of the finger g, at tached to the lever cf, the lever c c deriving its movement in the opposite direction from the spring 0 connected thereto and to the stud 0 In case a tack should not come under the driver, and consequently a tack should not be driven into the strip 8 at any one descent of the driver, then in such case the blade (1 does not have opposed to it a tack, and consequently the movement of the feeler-lever by the spring 8 is far enough to enable the controller to be turned about its fulcrum 12 sufficiently to place the notched part let of the pawl-controller in line with the pin or projection 15 of the pawl 0, so that as the lever c 0' starts to move the pin 15 in contact with the projection H of the controller-lever 6' immediately acts to throw the point of the pawl 0 out from engagement with the teeth of the ratchet-wheel I), and consequently the pawl fails to act upon and move the feed-wheel. In this way the feed-wheel is moved after a tack has been inserted in the strip 8, and the point of the tack touches nothing but the strip.

Believing myself to be the first to provide a vibrating feeler to contact with the side of the tack to determine whether or not the feedwheel and strip shall be moved, I desire to say that I do not intend to limit my invention to the exact form of feeler herein shown, but desire to include asof my invention any form of i'eeler which has a movement toward and from the body of the tack, or at an angle to the longitudinal center of the body of the tack; nor do I desire to limit my invention to the exact connection shown between the feeler and the pawl-controller for the pawl, as such connection, and also the pawl-controller, might be variously modified in construction and yet be comprehended in my invention.

I claim 1. In a machine for making tack-strips, a feed-wheel and a pawl to move it, combined with a feeler to contact with the side of a tack driven into the strip and enable the said pawl to act and move the said feed-wheel, substantially as described.

2. In a machine for making tack-strips, a feed-wheel, a pawl to move it, and a pawl-controller, combined with a feeler to contact with the side of a tack driven into the strip and keep the pawl-controller in position to enable the said pawl to act and move the said feedwheel, substantially as described.

3. A feed-wheel, a pawl to rotate it, a sup- I G. W. GREGORY, MABEL RAY.

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