US703835A

US703835A - Brake.

Info

Publication number: US703835A
Application number: US73683599A
Authority: US
Inventors: Vernon Royle
Original assignee: Individual
Current assignee: Individual
Priority date: 1899-11-13
Filing date: 1899-11-13
Publication date: 1902-07-01
Anticipated expiration: 1919-07-01

Description

No. 703,835. Patented July I,- I902.

\I. BOYLE.

BRAKE.

(Application filed Nov. 13, 1899.)

(N0 Model.)

UNITED STATES;

PATENT OFFICE.

VERNON RQYLE, OF PATERSON, NEW JERSEY.

SPECIFICATION forming' part of Letters Patent No. 703,835, dated. July 1, 1902.

Application filed November 13, 1899. Serial No. 736,835. (No model.)

To all whom it Weary concern. I

Be it known that I, VERNONRQYLE, a citi-. zen of the United States, and aresident of Paterson, in the county of Passaic and State ofNew Jersey, have invented a new and useful Improvement in Brakes, of which the following is a specification.

My invention relates to an improvementin machines for punching jacquard cards, and more particularly to that type of machine shown, described, and claimed in United States Patent No. 644,871, granted me March 6, 1900, in which the mechanism for feeding the cards and operating the punches is thrown into and out of action by clutching a driveshaft to a continuously-driven pulley.

My present improvement is directed to means for promptly arresting the rotary movement of the shaft when the clutch is released.

In the accompanying drawings, Figure 1 is a view in front elevation of so much of the machine as will suffice to illustrate a practical embodiment of my invention. Fig. 2 is a View of the same in side elevation, partlyin section. Fig. 3 is a view in detail showing the clutch in the position which it assumes when the shaft is locked to the drive-pulley, and Fig. 4 is a similar view showing the position which the clutch assumes when the shaft is released from the drive-pulley.

The supporting-frame is denoted by A and may be of any well-known or approved form suitable for supporting the different operating mechanisms. Near its base a drive-shat t B is mounted in an elongated bearing 1) and is connected at its front end by means of suitable cams and eccentrics with pitm'an G, for operating the punches and a rod D for operating the escapement which controls the feed.

On the rear-end of the shaft B a drivepulleyEis loosely mounted and is driven from a suitable source of power. (Not shown.) The pulley E is clutched to and'released from the shaft B by means of a pair of pedals F F, which operate a clutching mechanism as follows: A pair of 'clutching-shoes(denoted by G G) have a radially-sliding connection witha supporting-plate g, fixed to rotate with the shaft B, and are connected by toggle-dogs g g with a hub 1), free to rock on the shaft B. The hub Z) has radiating therefrom arms 12 b the free ends of which are connected by springs H H with the opposite ends of the supporting-plate g, as at h h. The tension of the springs H H is such that when permitted to act they will rock the huh 1) into the position shown in Fig. 3, with the toggledogs g g in radial lines to throw the clutchshoes G G into engagement with the rim of the drive-pulley E, and hence cause the shaft 13, tovwhich the supporting-plate g is fixed, to rotate, together with the drive-pulley E. The huh I) is, however, positively rocked in the oppositedirection againstthe tension of the springs HH by means of a rocking dog I, carried by the supporting-frame g and arranged to'be forced against a third arm b extending from the hub 12', by the engagement of one arm of the dog I with a nose 7:; on a sleeve K, arranged to he slid along the bearingb into and out of a position to engage and operatethe dog I. The sleeve K is slid by means of a short link it, connected with the downwardly-extended arm k of a tribrake-wheel M and fixed to rotate with the shaft B, the opposite end of the strap or band brakeL being fixed to the supporting-plate g by means of a screw-threaded bolt m, provided with a nut m for adjusting the brake relatively to the 'periphery of the brake-wheel. By this arrangement whenever the sleeve Kis drawn out of engagement with the dog I and the springs H H permitted to act and throw the-clutches into engagement with the drive-pulley the hub b will be rocked in a direction to-release the strap or hand brake L from the brake-Wheel, permitting the shaft B to turn freely. On the other hand, whenever the sleeve K is slid into position to engage the dog I, and thereby rock the huh I) by the engagement of the dog with the arm b on the hub, the band or strap brake will be caused to promptly hug the periphery of the brake-wheel and promptlystop the rotary movement of the shaft B.

The escapement-operating rod D, hereinabove referred to, is connected with the escapement-rod N by means of a crank-arm 'n. The escapement-rod N is essentially a rock shaft mounted in suitable bearings underneath the feed-table and carries an escapement mechanism comprising dogs constructed and arranged to engage successive teeth 0 on the rack-bar O to permit the feed table or carriage to be drawn rearwardly by an actuating-springon a drum P, the drum being connected with the carriage by a cord 19. The particular structure of the escapement mechanism is fully set forth and claimed in the patent hereinbefore referred to and is briefly referred to here only for the purpose of showing the connection therewith of the improved operating-rod D.

As heretofore constructed the laterallyvi'brating dogs carried by the shaft N for engaging the teeth oon the rack-bar, have from one cause or another caught the teeth 0 instead of sliding between two successive teeth, and the positive movement of the rod D has caused the breaking of the dog or some part of the mechanism which refused to yield as the rod was positively reciprocated by the drive-shaft B.

I provide against liability of breakage as follows: The rod D has a free sliding movement in an elongated bearing d, pivoted to the crank-arm n, and also in bearings d d connected with the eccentric-strap which embraces the eccentric b The said rod D has further fixed to it a collar 61 below the bearing (1 and a collar 61 below the bearing d Coil-springs Q Q connect the bearing 01 with the collar (1 on the rod and the bearing d with the collar d" on the rod, respectively, and the tension of these springs is relied upon to operate the rock-shaft N and throw the dogs into and out of engagement with the teeth on the rack-bar when the parts are working in perfect order; but when for any cause one of the escapement-dogs happens to engage the end of a tooth 0 instead of entering the space between two consecutive teeth the operatingrod D will be allowed to move laterally under the positive motion of the drive-shaft B, the spring Q or Q, as the case may be, yielding to permit the rod D to move without endangering the integrity of the tooth or the dog.

To bring the punch-keys R on the front of the punch-head, which are intended to control the punches for punching the peg and lace holes in the card, within convenient reach of the operator, while the fingers of the hand are manipulating the keys R on the opposite side of the punch head and which keys control the punches for punching the pattern-holes in the card, I provide a lateral,

the middle key R audits free end carried into such position with relation to the two keys to the right of it as the drawing is held that the thumb of the right hand of the operator may cover the two keys and the end of the extension 1', which controls the third key, while the thumb of the left hand of the operator readily controls the other two keys at the left of the center.

The foregoing matter, relating to the means for preventing the feed-driving mechanism from causing injury to the escapement when the latter fails to register and for relieving the strain upon the hand of the operator in manipulating the punch-keys, is not claimed in the present application, but forms the subject-matter of a divisional application, Serial No. 38,624, filed December 4, 1900.

What I claim is 1. The combination with the drive-pulley and drive-shaft, the former being free to rotate relatively to the latter, of clutch-shoes arranged to engage the drive-pulley, aspringactuated hub mounted on the drive-shaft for locking and releasing the clutch-shoes, a brake under the control of said rocking hub to be set and released and means under the control of the operator for causing the said hub to rock in a direction to release the brakeshoes and set the brake, substantially as set forth.

2. The combination with the drive-pulley and drive-shaft, the former being free to rotate relatively to the latter, of a clutch arranged to engage the drive-pulley, a springactuated hub mounted on the drive-shaft for locking and releasing the clutch, a brake under the control of said hub to be set and released, hub-controlling means and a pair of pedals for positively operating the hub-controlling means to set the clutch and release the brake and to release the clutch and set the brake, substantially as set forth.

In testimony that I claim the foregoing as my invention I have signed my name, in presence of two Witnesses, this 18th day of October, 1899.

VERNON BOYLE.

Witnesses:

FREDK. HAYNES, C. S. SUNDGREN.

extension 0, which may be fixed to the end of 1