US511391A

US511391A - Clutch

Info

Publication number: US511391A
Authority: US
Publication date: 1893-12-26
Anticipated expiration: 1910-12-26

Description

W. WOMRSLBY. CLUTCH.

No. 511,391. Bahama Dec. 26, 189s.

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UNITED STATES WILLIAM WOMERSLEY, OF POUGHKEEPSIE, ASSIGNOR TO D. H. BURRELL n OO., OF LITTLE FALLS, NEW YORK.

CLUTCH.

sPEcIFIcATIoN forming part of Letters Patent No. 511,391, dated Deeember 26, 189s.

Application iled April 29. 1893. Serial No.y 472,347. (No model.)

To @ZZ whom it may concern:

Be it known that I, WILLIAM WOMERSLEY, a citizen of the United States, residing at Poughkeepsie, in the county of Dutchess and State of New York, have invented new and useful Improvements in Clutches, of which the following is a specification.

This invention relates to a clutch for driving one machine from another when the driving shaft and the driven shaft run at different speeds and which, when disengaged, permits one machine to be actuated independently of the other and which, upon being engaged, sets the driven machine in motion only at that point at which both machines run in correct register. A clutch of this kind is described and claimed in an application for Letters Patent filed by me December 27, 1892, Serial No. 456,314. The clutch of this present application differs somewhat in its construction from that of my former application and this present application is, therefore, restricted to such features of diierence.

In the accompanying drawingsz-Figure l is a side elevation of an automatic paper feeder and a printing press connected by my registering clutch. Fig. 2 is an end elevation of the clutch, on an enlarged scale, showing the same thrown out of gear. Fig. 3 is a sectional elevation at right angles to Fig. 2, showing the parts in the same position, the section being taken in line 3-3, Fig. 2, looking to the left. Fig. 4 is a sectional elevation of the sleeve carrying the pawl and trip pin, the section being also taken in line 3 3, Fig. 2, but looking to the right. Fig. 5 is a vertical section of the clutch showing the same thrown into gear, but before the star wheel has been engaged with the coupling pawl. Fig. 6 is a sectional elevation at right angles to Fig. 5, the section being taken in line 6 6, Fig. 5, but showing the star wheel engaged with the coupling pawl.

Like letters of reference refer to like parts in the several iigures.

A represents a printing press having its driving shaft ct journaled in bearings a/ on the main frame. n

B represents an automatic paper feeder of any suitable construction which feeds sheets of paper successively to the printing press.

The paper feeder is provided with a driving shaft b having a sprocketwheel bat one end.

O represents a sprocket wheel mounted loosely upon the press shaft and connected with the sprocket wheel of the feeder shaft by a chain belt c.

D represents astar wheel whichis mounted upon an arbor d secured to the front side of the sprocket wheel C, parallel with the axis thereof. This star wheel is provided in its periphery with four equidistant concave faces e which are separated by radial slots or notches f. The star wheel is also provided on its front side with a projecting pin g.

H represents a sleeve which is arranged on the press shaft in front of the sprocket wheel C and its star wheel D, and which is connected with the shaft by a feather h entering a groove, so that the sleeve is compelled to turn with the shaft,'but can be moved toward and from the sprocket wheel. The diameter of the sleeve is such that the concave face e of the star wheel, which happens to be the lowest, bears against the upper portion of the cylindrical surface of the sleeve, as shown in Figs. 3 and 6, whereby the star wheel is pre- Vented from turning on its arbor. The sleeve is provided with a radially projecting arm I carrying a rearwardly projecting trip pin if which is adapted to engage in one of the radial slots of the star wheel, andv turn the latter when the sleeve turns independently of the press sprocket wheel. The star wheel is held against rotation on its arbor during an entire revolution of the sleeve by one of the concave faces engaging against the convex surface of the sleeve. At lthe end of each revolution of the sleeve, the trip pin engages in one of the notches in the star wheel and 9o turns the same the distance of the face. The periphery of the sleeve is provided, opposite the trip pin, with a recess c" which permits the star wheel to turn when the trip pin engages therewith. The sleeve H isprovided with another arm J extending radially from the sleeve diametrically opposite thearm I. The arm J carries a coupling pawl K which is pivoted to the outer end of this arm by a screw lo and provided at its inner end with a rearwardly projecting nose lo which strikes the pin g on the front side of the star wheell IOO When the sleeve has been moved rearwardly on the press shaft to throw the clutch into engagement. The paw] K is positively held against movement in one direction by a stop Z formed on the arm J near the inner end of the pawl, and is yieldingly held in the opposite direction by a spring m which is secured to the sleeve and bears with its outer end against a dat sided face n on the pawl. This permits the shaft of the printing press to be reversed without disturbing the paper feeder. In the absence of that requirement the pawl maybe omitted and the arm J or a rigid stop on the same, may be arranged to engage With the pin of the star Wheel. The sleeve is provided with an annular groove l in which the shifting lever L engages.

In the position of the parts shown in Figs. 2 and 3, the sleeve is Withdrawn with its pawl from the pin of the star wheel,and the clutch is thrown out of engagement. The press sprocket wheelis,in this position of the parts, uncoupled from the sleeve, and remains stationary so that the press can be operated Without operating the feeder. Vhen the press shaft is rotated under these conditions the trip pin turns the star Wheel, but the latter is not interlocked with the pawl and the sprocket wheel is, therefore, not carried around with the sleeve. When itis desired to connect the feeder with the press, the sleeve is shifted toward the sprocket Wheel, so as to place the nose of the pawl in the path of the pin on the face of the star Wheel, as represented in Fig. 5. The intermittent rotation of the star Wheel by the trip pin now brings the pin on the front side of the star wheel at the proper time in engagement with the pawl, as represented in Fig. 6, and causes the sprocket Wheel to begin its rotation with the sleeve when the machines are in proper register.

The number of concave faces and slots 1n the star wheel is regulated in accordance with the relative speed of the driving and driven shaft, as stated in my aforesaid application for patent.

I claim as my invention- 1. The combination with the driving shaft, the driving Wheel loosely mounted thereon, and a star wheel mounted on said driving wheel, of a sleeve rotating with the driving shaft and capable of movement thereon, to- Ward and from said star wheel, and a coupling device attached to said sleeve and adapted to engage with said star Wheel, substantially as set forth.

2. The combination with the driving shaft, the driving wheel loosely mounted thereon, and a star Wheel mounted on said driving Wheel and provided on its front side with a projection, of a sleeve rotating with the driving shaft and capable of longitudinal movementthereon, toward and from said star Wheel, a pawl supported on said sleeve and adapted to interlock with the projection on the star Wheel, and a stop and spring whereby the pawl is held positively in one direction and yieldingly in the other, substantially as set forth.

Witness my hand this 18th day of April, 1893.

WILLIAM XVOMERSLEY.

Witnesses:

ISAAC BURRELL, JOHN K. SAGUE.