US634068A - Mechanism for operating intermittingly-rotating shafts. - Google Patents

Description

No. 634.068. Patented Oct. 3, 1899.

H. W. PORTER.

IEGH RNISI FUR UPERATING INTERIITTINGLY ROTATING SHAFTS;

(pplication filed June 21, 1899.

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No. 634,068. .Patentad Oct. 3,1899.

H. W. PORTER.

IEGHMIISI FOR OPERATING IIITERITTTIN6LY ROTATING SHIFTS.

(Appliatica and June 21, 1299.1

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' UNITED STnTns PATENT OFFICE.

HENRY 'WQPOR'TER, OF FORESTVILLE, CONNE TIC T, nsslenon To PETER T. FARRELL AND JOHN M. TOOHEY,OENEW BRITA1N,CONNEOTICUT;

MECHANISM FQROPERATING INTERMlTTINGLY-ROTATING.SHA'FTS.

sPEcIFrcnTron forming part of Letters Patent ne'eeaoes, dated October 3,1899.

Application filed June 21, 1899. Serial No. 721,370. (No model-l To all whom it may concern:

Be it known that I, HENRY PORTER, a citizen of the UnitedStat'es, residing' at Forestville, in the county of Hartford and State of Connecticut, have invented certain new and useful Improvements in -Mechanism for OperatingIntermittingly-Rotating Shafts, of which the following is 'a specification.

My invention relates to mechanism for operating intermittingly-rotating shafts; and the objects of my invention are simplicity in construction and eificiency in operation.

In the accompanying drawings, Figure 1 is a front elevation of my machine, the upper portion of the standards being represented as broken 0E. Fig.- 2 is a side elevation of the same, showing the left-hand end. Fig. 3' is a side elevation as seeu from theright, but with the right-hand standard and movement-plate removed in order to better show the other parts. Figs is a sectional side elevation on the line a: m, Fig. 1. Fig. 5 is a detached and enlarged side elevation of one of the tripsprings, and Fig. 6 is a'detached view of a part of the stop-disk with one of the. tripsprings removed in order to show the socket for securing the same to the said stop-disk.

My machine is applicable for use in various mechanisms where an iutermittingly-rotating shaft is employed. In the form shown it is especially designed for operating intermittingly the rotary shaft A of a machine for exhibiting transparencies, the said shaft being provided with heads 7 7 for carrying the transparencies, which may be arranged in any suitable holder mounted on and carried by the said heads. The side ears o'r'lugs 8 on the said heads are to prevent the holder from working. laterally out of place Any other devices for any desired purpose in connection with an intermittingly-rotating shaft may be substituted on the said shaft for the 7 heads 7 7. Y

B, Fig. 1, designates a base to which the standards 9 are secured. The tops of the standards may be of any desired shape and extend to any desired height," according to circumstances. For the purposes ofgny invention it is only necessary that the righthand standard, asviewed in Fig. 1, shall extend high enough to support the time-train O and the other high enough to support the spring-motor D, and I have therefore represented said standards asbroken off just above these trains.

My machine is especially designed to operate the shaft A. Said shaft is mounted to revolve in suitable bearings on the standards 9 9, the said bearings onone side being formed directly in the movement plate 10 of the spring-motor train D and on the other side in themovement-plate 11 of the train 0. The standards are centrally and vertically slotted, as at 12, whereby the respective trains or movements 0 D or other parts may be adjustably secured thereon by means of screws 13 and washers 14,- Fig. 2, the said screws passing through the washers and standards and dinary construction, and any other known driving mechanism that will have a tendency said motor-train D is composed of a frame, two springs 15, main wheels 16, pinions 17, and wheel 18, that engages with and drives the pinion 19 on the shaft A. The parts of the said wheels and pinions that are hidden by other parts in Fig. 2 are indicated by broken circles in said figure. Rigidly mounted on the opposite end of the shaft A is the stopdisk E, having upon one side a series of stoppins20 and on its other side a corresponding series of trips 21, pivoted to said disk, as at 22, with their beveled ends projecting there from. Said trips are normally forced against their steps .23 by means of the springs 24.. These springs are rigidly secured by one end to the stop-disk E in any proper manner. In Figs. 5 and 6 I have illustrated one way of securing said springs to said disk. Each spring is provided at its heel with a lug 25, and the diskis provided with slits or sockets 26, into which the said lugs may be forced with sufficient friction to hold them in place. The rigid ends of the springs are thus secured to the stop-disk, which serve as stops to limit shaft A within it, as shown; but it is only necessary that it shall be fixed relatively to the said movement-plate. The companion movement-plate 27 for the said train 0 is only large enough to confine the parts belonging specifically to the said train. Upon a post 28 on the plate 11 I mount the angle-lever 29 30, of which 29 isits stopping-arm, and 30 its tripping-arm, thelatter being provided with a lateral wing 31, that extends over the edge of the disk E and its trip for engaging the same, as hereinafter described. Rigidly connected with this angle-lever is a tripping-lever 32, the curved upper end of which extends upwardly to the fly-wheel or time-train in position for being acted upon by the trip-pins 33 of the wheel 34 of the said train at regular intervals of time.

I call the train 0 a time-train, because it is a spring-motor whose motion is retarded or prolonged by a fly-wheel for making the train run slowly for a considerable time and to revolve its Wheels at a regular speed, so that one of its wheels 34, earring trip-pins 33, will revolve in a given predetermined time and act upon the tripping mechanism hereinafter described to operate it at regular intervals of time. As shown, said train consists mainly of a frame, two main wheels, and springs 36, and wheels 37 34: 39 40, fly-wheel ii, and connectingpinions, the same being a well-known train and for which other analogoustrains may be substituted. The anglelever 29 30'is provided with a spring 38, which has a constant tendency to force the said lever in a direction to disengage its stoppingarm from the stop-pins 20 of the stop-disk E. The two members of the angle-lever are so related to each other and the stop-disk that when the tripping-arm 30 has its wing 31 in engagement with the edge of said disk the end of the stopping-arm will be carried out of the path of the stop-pins 20, and as soon as the trips act to slightly elevate the said wing 31 from said disk, as shown in Figs. 3 and 4, the said arm will be in the path of the said stop-pins, and consequently will engage one of the said stop-pins and prevent the motor D from driving the shaft A so long as the said arm remains in the path of the said pin. When the time-train is' in motion, the wheel 34: revolves slowly, and at each third of a revolution (when the wheel has three trip-pins) one of the trip-pins 33 engages the trip-lever32 and moves said lever in the direction to lift the tripping-arm 30, so as to lift it over the end of the trip 21 with which it may be engaged. The spring 2a immediately moves said trip out of the way of the wing 31, While the stopdisk is still held by the stop-lever 29 in engagement with one of the stop-pins. Soon after the trip is released the trip-pin 33 passes the downwardly-projecting curved upper end of the trip-lever 32 and releases said lever and connected angle-lever to the force of its spring 38, carrying said levers to the position indicated by broken lines in Fig. 3, the wing 31 of the tripping-arm 3O falling upon the edge of the stop-disk, while the stop-lever disengages the stop-pin 20 to release the stop-disk to the force of the motor D, so that said shaft moves forwardly. The succeedingtrip will engage the wing 31 of the tripping-arm 30 and move said trip on its axis in the direction to compress its spring as far as the said spring will permit, and then said trip will force the tripping-arm upwardly and bring the stop-lever into the path of the pins 20, so as to arrest the movement of the-stop-disk after it has moved one-sixth of a revolution, this position of the said parts being illustrated in connection with the upper one of the trips in Fig. 4. At the next third of a revolution of the wheel 34 another one of the pins 33 engages the trip-lever 32 and again releases the shaft A to the action of its driving mechanism, permitting it to move another sixth of a revolntion, as before described, and so on repeat edly as long as the train is in motion and power is applied to the drive-shaft A a fraction of a revolution every time it-is released by the said fly-wheel train. In the particular machine from which the accompanying drawings were made the shaft A moves forward regularly once in every five seconds. Its movement is made in less than one second, so that it remains at rest fully four seconds between each intermittent movement.

While I prefer to lift and release the tripping-arm of the angle-lever by the time-train, it is evident that the action of the said trippin g-arm relatively to the stop-disk would be the same if the said tripping-arm were lifted and released by other mechanism or by hand.

It is apparent that some changes from the specific construction herein disclosed may be made, and therefore I do notwish to be understood as limiting myself to the precise form of construction shown and described, but desire the liberty to make such changes in working my invention as may fairly come within the spirit and scope ofthe same.

I claim as my invention 1. The combination of the stop-disk E having a series of stop-pins, with a series of spring-pressed trips pivoted on said disk, the angle- lever 29,30, for acting on the said pins and trips, and a time-train for controlling the action of the said angle -lever, substantially as described.

2. The combination of the shaft A, a motor acting to drive the said shaft when released, a stop-disk having a series of stop-pins, a series of spring-pressed trips pivoted on said disk, the angle-lever for acting on the said pins and trips, a trip-lever, rigidly secured to and extending beyond the reach of the said angle-lever, a spring for pressing the said angle-lever in one direction and a trippin wheel revolving at a given speed for acting on the said trip-lever at regular intervals of time, substantially as described.

3. The combination of the stop-disk having a series of stop-pins and a series of springpressed trips projecting from its edge, and the of said disk, the angle- lever 29, 30, for en-' gaging the said stop-pinsand trips, a spring for forcing the said angle-lever in'the direction to release it from the said stop-pins and 10 a time-train for operating the said angle-1e ver at regular intervals of time, substantially as described.

HENRY W. PORTER.

Witnesses:

LOREN D. PENFIELD, M. P. MONARYJ

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