US1152600A - Cam-movement. - Google Patents

Description

H. O. CARLETON & E. W. NELSON.

CAM MOVEMENT. APPLICATION FILED OCT. 23. I913.

Patented Sept. 7, 1915.

2 SHEETS-SHEET I.

H. O. CARLETON & E. W. NELSON.

CAM MOVEMENT. 1

APPUCATION FILED cm. 23, 1913.

1 1 ,UU Patented Sept. 7, 1915.

2 SHEETS-SHEET 2.

WITNESSES: Jan/M /1245 TORS 65% I WM A TTOR/IIE Y HERBERT 0. CARLE'ION, OF NEW YORK, AND ERIK W. NELSON, OF NEW ROCHELLE,

NEW YORK.

CAM-MOVEMENT.

Specification of Letters Patent.

Patentedfiept. 7, 1915.

Application filed October 23, 1913. Serial No. 796,882.

Tooll whom it may concern Be it known that we, HERBERT 0. (Luann-- TON, a citizen of the United States, and resident of the city of New York, borough of Brooklyn, county of Kings, and .State of New York, and ERIK W. NELSON, a citizen of the United States, and resident of New Rochelle, VVestchester county, and State of New. York, have invented certain new and useful Improvements in Cam- Movements, of which the following is a specificatio This invention relates to a cam'movement adapted for various uses Where it is desired to translate a rotary movement into straight line movements in different directions. .7

The object of the invention is to provide a simple construction for a cam movement for accomplishing the above purpose in. a positive and efficient manner.

In carrying out the invention we employ an eccentric curved face cam and a cam frame of peculiar construction whereby, when the cam is rotated, four-direction straight line movements and a rectilinear movement will be imparted to the cam frame.

As an illustration of one of the many uses to which this cam movement may be put we have shown the same as applled to a motion picture machine for feeding the film. In this connection part of the movement is utilized for the feeding and a part of the movement for operating mechanism for alternately holding and, releasing the film, all of which to be explained more fully hereinafter in connection with the desoription of the invention as an illustration in the accompanying drawings.

In the drawings like parts in the several views have been given the same reference numerals.

Figure 1 is a sectional side elevation of a cam movement and mechanism operated thereby. Figs. 2, 3, 4 and 5 represent successive positions of the cam and frame during one complete revolution. Fig. 6 is a front view taken from the right of Fig. 1.

A suitable support for the cam and associated parts is indicated at 1. The motive extends'through an extension 6 from the support 1, the cam 4 being attached to one face of the hub 5. A. camframe 7 is positioned about the cam 4:. This frame is formed of four rectangular faces each encc gaging the cam 4. The cam 4; is formed with three faces each formed on circular arcs, joined by smaller arcs, thus forming a triangular curved face cam. "Ihe cam is mounted to rotate about the center ofjone to of these ares. An extension 8 from the cam frame 7 is pivotally attached at 9 to a guide 10, so that as the cam is rotated the lower end of this extension will have a vertical, rectilinear, reciprocating motion and, at the same time, an oscillating motion will be imparted thereto. A pair of fingers 11 may be attached to the pivot pin 9, which is attached to the lower end of the extension 8 of the cam frame. The upper ends of the fingers 11 are formed so as to engage the usual openings in the film 12. It will thus be seen that as the cam 4 is rotated in the direction indicated by the arrows, the frame Wlll first assume the position shown in Figs. 1 and 2 and, during the next quarter turn, will be moved downwardly in a straight line into the position shown in Fig. 3. From this position the upper end. of the cam frame will be moved, during the next quarter turn, to the left to the position shown in Fig. 4:, the extension 8 moving about the center of the pivot pin 9. During the next quarter turn the frame is moved from the position shown. in Fig. 4 up wardly in a straight line in the position shown in Fig. 5, and, during the next quar ter turn", will be moved to the right to the positlon shown in Figs. 1 and 2, the exten- S1011 8 moving about the center of the pin 9. It will be seen that the successive movements cause the fingers 11 to move the film 12 downward during the-first period of the motion, then moving the fingers 11 out of engagement with the film during the second period of the motion, then moving the fingers upward during the third period of the motion and then to .the right during the fourth period of the motion again into engagement with the film, when the operation M5 is repeated.

Another operation is performed by the cam movement when used in connection with a motion picture machine. A colored glass 13 is loosely mounted in a frame 14. 11%

and normally held tightly against the'film gular faces each engaging said cam, where- 12 by means of a hinged member 15 and its by a four-direction straight line movement spring 16. A sliding pin 17 is mounted in is imparted to said cam frame as the cam and extends through the support 1 in posiis rotated, said cam frame being also pro- 5 tion to be engaged at its inner end by the vided with an integrally formed extension, 25 cam frame 7 when the same is moved to the a rectilinear guide having a projection, said position shown in Fig. 1 andthe pin 17 is extension being pivotally attached to said thus moved outwardly and engages a porprojection, whereby a reciprocating and ostion or extension 18 from the member 15 cillating motion is imparted thereto and 10 and moves the same outwardly, releasing the the extension caused to move toward and 30 pressure on the glass 13 and the film 12 away from said guide. while the same is being advanced or moved Signed at New York city, in the county downwardly by the fingers 11, as already and State of New York, this 18th day of desgrriibed. 1 October, 1913. 15 at we c aim is 4 A cam movement comprising an eccentric LETON' curved face cam and a cam frame operated Q thereby, said cam being formed with three Witnesses:

faces-each formed on circular arcs andlsaid Lnv vrsg DooLlr'rma, n r 20 camiramenbeingiormedxwithiournrectan I10UELLA FIlT'lLE.

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