US615900A

US615900A - prince

Info

Publication number: US615900A
Authority: US
Publication date: 1898-12-13
Anticipated expiration: 1915-12-13

Description

No. 615,900. Patented Dec. I3, I898. J. A. PRINCE.

AUTOMATIC STOP ATTACHMENT FOR PAPER EMBDSSING MACHINES. (Appliation filed Feb. 12. 1898. (N0 Model.)

2 Sheets-Sheet l.

No. 615,900. Patented Dec. 13, I898.

J. A. PRINCE.

AUTOMATIC STOP ATTACHMENT FOR PAPER EMBDSSING MACHINES.

(Application filed Feb. 12, 1898., (No Model.) 2 Sheets-Sheet 2.

NITED STATES PATENT OFFICE.

JOHN A. PRINCE, OF NEW' YORK, N. Y.

AUTOMATIC STOP ATTACHMENT FOR PAPER-EMBOSSING MACHINES.

SPECIFICATION forming part of Letters Patent No. 615,900, dated December 13, 1898.

Application filed February 12,1898. Serial No. 670,037. (No model.)

T0 at whom, it may concern.-

Be it known that I, JOHN A. Person, a citizen of the United States, and a resident of New York, in the county and State of New York, have invented a new and useful Improvement in Automatic Stop Attachments for Paper-Embossing Machines, of which the following is a specification.

My invention relates to an improvement in automatic stop attachments for paper-embossin g machines in which the machine is antomatically stopped by an increased thickness in the paper being fed thereto. The object of providing this stop attachment is more particularly to prevent the feeding of the joined ends of different sheets of the paper to the embossing-roller, the said thickened portion of the paper having a tendency to mar the impression-roller and produce inferior work on the remaining paper fed thereto.

A practical embodiment of my invention is represented in. the accompanying drawings, in which- Figure 1 represents an end view of an embossing-machine with my improved stop attachment applied thereto. Fig. 2 is a partial front view of the same. Fig. 3 is a vertical section through the machine from front to rear in the plane of the line 3 3 of Fig. 2. Fig. 4 is a view of the latch-bar and its adjacent parts, the latch-bar being shown in full lines engaged with its catch and in dotted lines the position which it assumes when raised by the tripping-arm. Fig. 5 is a view of the same parts, showing the position which they assume after the latch-bar has been released. Fig. 6 is a vertical cross-section in the plane of the line 6 6 of Fig. 5, and Fig. 7 is a detail View of the tripping-arm-operating cam.

A A designate the side frames of the embossing-machine, between which are mounted the usual embossing-roller B and impression-roller C. These rollers are geared together by spur-gears b c, exterior to the side frame A. The impression-roller B is geared to and rotated by a drive-shaft D, suitably mounted in the machine, which drive-shaft is provided with a fast or drive pulley d and a loose pulley d. The drive-shaft D is rotated by a belt E, running to a source of power; (Not shown.)

A belt-shifter F is mounted to reciprocate upon suitable guide-rods ff, extended outwardly from the side frame A. This beltshifter F is provided with a suitable loop f which engages the drive-belt E.

A guide-roll G is mounted across the front of the machine in suitable vertically-adjustable bearings g, and a smaller guideroll H is mounted between the side frames A A at a point to the rear and slightly below the guideroller G.

A roll of paper I is Wound upon a suitable beam 1, which is mounted in suitable supporting-brackets t" on the side frames A A at the front of the vertically-adjustable guide-roll G. The paper isled over the guide-roll G, under the guide-roll H, and between the embossing-roller B and the impression-roller C, and from thence partially around the roller 0, and is then led from the machine.

The automatic stop attachment which I have provided for stopping the machine when paper of an undue thickness is being fed thereto consists of the following parts: A roller J is mounted in suitable bearings j on the side frames A A, the said roller J being located directly above the guide-roller G, the distance between the two rollers being accurately adjusted by the raising and lowering of the'said roller G. The distance between ,these two rollers is just sufficient to permit the paper of the required thickness to pass therethrough without engaging the roller J; but the space is so small that if the paper should be increased in thickness, as by the overlapping of two adjacent ends or by wrinkling or folding of the paper, the roller J would be rotated. A cam K is secured to the end of the shaft of the roller J, exterior to the side frame A. A tripping-arm L is hinged at Zto the side frame A, and at its free end the said arm is provided with a roller Z, which rests upon the periphery of the cam K. This cam is preferably provided with a slightly depressed portion lc,within which the roller seats, so that the roller J will not be caused to rotate unintentionallya s, for instance, by the jar of the machine. A rock-shaft M is mounted in suitable bearings or upon the side frame A,which shaft is provided with front and rear upwardly-extended arms m m the arm m being provided with a suitable handle m at its free end. The free end of the rear arm m is connected with the belt-shifter F by a connecting-bar m whereby the rocking movement of the shaft M will cause the belt-shifter to shift the belt E from one to the other of the fast and loose pulleys (1 cl on the driveshaft D. A retracting-spring N extends from the end plate f of the belt-shifter guide to the arm mithe tendency of the said spring being to shift the belt E from the fast pulley onto the loose pulley. The belt-shifter F is,

held against the tension of the spring N with the driving-belt in engagement with the fast pulley d by means of a latch-bar O, hinged at o to the upwardly-extended front arm m of the rock-shaft M, which latch-bar is provided with a suitable notch 0, which is engaged by a catch P, secured to the front of the side frame A. The latch-bar O is provided with a lug 0 which rests in close proximity to the top of the tripping-arm L when the latch-bar is held in its locked position.

To positively insure the working of the stop attachment instantaneously, the roller J is flattened along the element of surface normally adjacent to the roller G, as shown at 3', thereby causing the space between the two rollers to be decreased immediately after the roller J is started in its movement by the engagement of the thickened portion of the paper, thus insuring the firmer gripping of the paper by the rollers preventing it from slipping therebetween.

The operation of my attachment is as follows: As the paper is being fed to the machine,when a thickened portion thereof passes between the rollers G and J the said thickened portion will causethe roller J and its cam K to rotate, thereby swinging the tripping-arm L upwardly, which in turn will raise the latch-bar O and release it from its catch. The retracting-sprin g N will rock the shaft M outwardly, thereby causing the belt-shifter to shift the belt E from the fast pulley (1 onto the loose pulley (Z and cause the machine to stop. After the thickened portion has been removed, as for instance by cutting it out of the strip, the machine may be again started by grasping the handle m of the front arm m" of the rock-shaft M and rocking the shaft inwardly until the latch -bar 0 drops into engagement with its catch. By the use of this automatic stop attachment the paper which is being fed to the embossing-machine does not have to be watched by an attendant, and the class of work turned from the machine is much better, for the reason that the surface of the impression-roll is not unduly indented by thickened portions of the paper passing between the embossing-roller and the said impression-roller.

It is evident that the stop attachment as above described may be employed in connection with other machines than paper-embossing machines, and it is also evident that changes might be resorted to in the form and arrangement of the several parts without departing from the spirit and scope of my invention. Hence I do not wish to limit myself strictly to the structure herein shown and described; but

What I claim is 1. A stop attachment comprising a normally stationary roller, a cam carried thereby, a trip-arm engaged with the cam, a latch-bar in position to be engaged by the trippingarm, a belt-shifter and a rock-shaft having one arm connected with the belt-shifter and another arm connected with the latch-bar whereby the rotary movement of the said roller will operate the belt-shifter, substantially as set forth.

2. A stop attachment comprising a roller, a cam carried thereby, a tripping-arm engaged by the cam, a latch-bar in position to be engaged by the tripping-arm, a belt-shifter, a rock-shaft having one arm connected to the belt-shifter and another arm connected to the latch-bar, a spring tending to hold the beltshifter at the limit of its movement in one direction and a catch engaging the latch for holding the belt-shifter at the limit of its movement in the other direction, substantially as set forth.

3. In a stop attachment for paper-embossing machines, a guide-roller, a second roller mounted in proximity to the first-named roller, stop mechanism under -the control of the said second roller, the said second roller being flattened along its element of surface normally adjacent to the first-named roller whereby the space between the two rollers will be decreased when the second roller is rotated, substantially as set forth.

In testimony that I claim the foregoing as my invention I have signed my name, in pres ence of two witnesses, this 31st day of January, 1898.

JOHN A. PRINCE.

\Vitnesses:

FREDK. HAYNES, EDWARD VIEsER.