US719198A

US719198A - Pinwheel and star-wheel motion.

Info

Publication number: US719198A
Application number: US13147902A
Authority: US
Inventors: Joseph T Cyr
Original assignee: Crompton and Knowles Corp
Current assignee: Crompton and Knowles Corp
Priority date: 1902-11-15
Filing date: 1902-11-15
Publication date: 1903-01-27
Anticipated expiration: 1920-01-27

Description

No. 719,198. PATENTED JAN. 27,1903.

J. T. OYR. PINWHEEL AND STAR WHEEL MOTION.

APPLICATION FILED NOV. 15, 1902. I0 IODEL.

2 SHEETS-SHEET 1.

No. 719,198. PATENTED JAN. 27, 1903. J. T. GYR. PINWHEEL'AND STAR WHEEL MOTION. APPLICATION FILED NOV. 15, 1902. 'no MODEL.

2 SHEETS-SHEET 2.

UNITED STATES PATENT OFFICE.

JOSEPH T. CYR, OF WORCESTER, MASSACHUSETTS, ASSIGNOR TO CROMPTON & KNOWLES LOOM WORKS, OF WORCESTER, MASSACHUSETTS, A COR- PORATION OF MASSACHUSETTS.

PINWHEEL AND STAR-WHEEL MOTION.

SPECIFICATION forming part of Letters Patent No. 719,198, dated January 27, 1903. Application filed November 15, 1902. Serial No. 131,479- (No model.)

To aZZ whom, it may concern.-

Be it known that I, JosEPH T. CYR, a citizen of the United States, residing at Worcester, in the county of Worcester and State of Massachusetts,haveinvented certain new and useful Improvements in Pinwheel and Star- Whcel Motions, of which the following is a specification.

My invention relates to a pinwheel and star-wheel motion, technically termed Geneva motion, in which a continuous rotation of the pinwheel communicates an intermit tent rotary motion to the star-wheel; and my invention more particularly relates to a modified construction of the pinwheel and starwheel motion shown and described in my United States Letters Patent No. 699,910. In said patent the pinwheel only has one driver-pin; but in my present invention the pinwheel has two driver-pins and two oppositely-arranged curved offset flanges and two pair of pins or studs to operate in connection with projections on the segments of the starwheel to lock or hold the star-Wheel when one of the driver-pins is not in engagement with one of the slots in the star-wheel.

Referring to the drawings, Figure 1 is a side View of a pinwheel and star-wheel motion embodying my improvements. Fig. 2

corresponds to Fig. 1, but shows the reverse view of the pinwheel and star-wheel motion.

Fig. 3 corresponds to Fig. 2, but shows a different position of the pinwheel; and Fig. 4

corresponds to Fig. 3,but shows a difierent.

5 position of the pinwheel.

In the accompanying drawings, 1 is a pinwheel secured on a driven shaft 2, in this instance by a set-screw or bolt 3. The pinwheel 1 has the two driver-pins 4E and 5 extending out from the same side thereof upon opposite sides of the shaft 2. On the same side of the pinwheel 1 as the driver-pins 4 and 5 are two curved flanges or extensions 6 and 7 upon opposite sides of the shaft 2 and 5 intermediate the

pins

1 and 5. Also on the same side of the pinwheel 1, on opposite sides of the shaft 2 and outside of the flanges 6 and 7, are two pairs of pins or studs 8 8 and 9 9.

The star-wheel 10 is in this instance keyed on a shaft 11 to communicate an intermittent motion thereto and has six radial slots or recesses 12 in its periphery to be engaged by the driver-pins 4 and 5. Intermediate theradial slots 12 the periphery of the star-wheel 10 has the concave recesses or

depressions

13, 5 5 the curvature of which corresponds to the curvature of the two offset flanges 6 and 7. Upon the side or face of the star-wheel 10 contiguous to the pinwheel 1 and at the outer or open ends of the radial slots 12 are projec- 6o tions 14, having their inner edges slightly curved. The width or thickness of the projections 14 is a little less than the distance between one of the offset flanges 6 or 7 and a pair of pins or studs 8 8 or 9 9, so that said projections can pass between the same. (See Fig. 2.)

The operation of the pinwheel and starwheel motion shown in the drawings and above described will be readily understood by those skilled in the art. The continuous motion of the shaft 2 communicates a continuous revolution to the pin-wheel 1, and the engagement of one of the driver-pins 4: or 5 with a radial slot 12 in the star-wheel 1O communicates a partial rotation to said starwheel, in this instance one-sixth of a revolution, and then there is a dwell of the starwheel. The pinwheel 1, with the two driverpins 4 and 5, communicates two partial revo- 8o lutions to the star-wheel 10 at each complete revolution of said pinwheel.

By means of the two curved flanges 6 and 7 and the two pair of pins or studs 8 8 and 9 9 and the projections 14 on the star-wheel 1O the star-wheel is locked or held in position during the time it is stationary or when one of the driver-pins4 or 5 is not in engagement with one of the slots 12 in the star-wheel.

Referring to Fig. 2, it will be seen that 0" when both of the driver-pins' i and 5 ar M15 of engagement with the star-wheel and at equal distances therefrom, as shown 1n said figure, the projections 1 1 on the edge of the star-wheel will extend between one, of the 5 curved flanges 6 0167 and one pair of pins or studs 8 8 or 9 9 m the pinwheel 1, and thus lock or hold the j tar-wheel stationary. The continued revcilution of the pinwheel 1 in the direction/f arrow a will cause one of the driver-pins, as 5, to enter one of the radial slots 12 in the star-wheel 10, and at the same time one of the pairs of pins, as 8 will pass beyond the projection 14: on the star-Wheel (see Fig. 4) and leave the star-wheel free to be moved by the engagementof the pin 5 with the radial slot 12, and the continued revolution of the pinwheel 1 moves the star wheel 10 from the position shown in Fig. 4- to the position shown in Fig. 3, carrying the projection 14 on the star-Wheel 10 away from the curved flange 6 and the pin or stud 8 and leaving the star-wheel free to be turned by the revolution of the pinwheel. As the driverpin 5 passes out of the radial slot 12 in the star-Wheel 1O (supposing the pinwheel to be revolving in the direction of arrow Z), Fig. 4) the projection 14 enters between the curved flange (j and the pin or stud 8 to lock or hold the star-wheel in position after the driver-pin 5 passes entirely out of the radial slot 12.

The advantages of my improvements will be readilyappreciated by those skilled in the art.

By means of two driver-pins on the pinwheel two partial rotations are communicated to the star-Wheel at every complete revolution of the pinwheel, and by means of the curved flanges 6 and 7 and the pairs of pins or studs 8 8 and 9 9' the star-wheel is firmly held or locked in position every time it comes to a stop.

It will be understood that the details of construction of my improvements may be varied, if desired. For example, a pinwheel with more than two driver-pins may be used.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is

1. In a pinwheel and star-wheel motion, a pinwheel having two driver-pins, two curved flanges or extensions and two pairs of pins or studs, intermediate the driver-pins, and a star-wheel having radial slotsin its periphery, and concave recesses or depressions intermediate said slots, and projections at the outer ends of said slots, on the side of the star-Wheel contiguous tothe pinwheel, substantially as shown and described.

2. In a pinwheel and star-Wheel motion, the combination with a pinwheel having a plurality of driverpins, and a plurality of curved flanges orextensions and pins or studs, to hold or lock the star-wheel, of a star-Wheel having radial slots in its periphery and concave recesses or depressions intermediate said slots, and projections at the outer side of said slots on the side of the star-Wheel contiguous to the pinwheel, substantially as shown and described.

JOSEPH T. OYR. \Vitnesses:

J. O. DEWEY, M. I-IAAs.