US1834496A - Intermittent film moving mechanism - Google Patents

Description

Dec. 1, 1931. F. H. OWENS y 1,834,496

INTERMITTENT FILM MOVING MECHANISM Original Filed Oct. 18. l1928 INVENTOR. Feu/MN bf OWL-MS'.

Patented Dec. 1, 1931 UNI-TED STATES PATENT VOFFICE'.

FREEMAN H. OWENS, F NEW YORK, N. Yu,

AssIGNORATo OWENS 'DEVELOPMENT con.-

PORATION, OF NEW YORK, N. Y., A CORPORATION oF NEW rom:

INTERMITT'ENT FILM MOVIN MEUHAN'ISM Application led October .18, 1928, Serial No. 313,306. Renewed June 22, 1931.

y'construction and arrangement of parts will be apparent as the description proceeds, reference now being had to the figures of the accompanying drawings forming a part of thisy application and wherein like reference numerals indicate like parts. y

In vthe drawings Figure 1 is a topplan view partly in section illustrating m invention. p

Figure 2 is a' detail view showing a strip of film of one form with which my improved mechanism is particularly adaptable.

Figure 3 is a. side view of the intermittent mechanism, certain parts being broken away for clearness.

Figure '4 is a detail front view of the mech anism.

In carrying out my invention, I provide a.`

main driving shaft 1,- receiving its driving power by means of a pulley 2, mounted on the shaft, and a belt 3 passing over the pulley and around a pulley 4 on the shaft 5 constituting the power source. This shaft 5 may be the armature shaft of a motor.

' Also mounted upon the shaft 1| is a gear 5 meshing with a gear 6 upon a stub shaft 7 A suitably ournaled between the sup-ports. 8 and 9. l i

Also supported by the supporting plate 8 and 9 and extending between them isa guide pin 10, the purpose of which will be presently apparent.

Mounted vin operative relation to these elevments just describedis a film` moving shuttle 11 having its rear end bent at rright'fanglesand then back parallel with the body portion thereof as at 12. This end of the shuttle 11 is slotted as at 13 to receive the guide pin 1,0 whereby the shuttle 11 is guided in. its longitudinal movement and at the same time permitted to rock pivotally upon the pin 10.

The shuttle 11- is offset intermediate its ends as at 14 and ata point just beyond the offset 14jis provided with inwardly turned laterally extending spaced flanges 15. Beyond these flanges 15 the frontend of the shuttle4 11 is formed as a film engaging claw 16.

Mounted upon the shaft 1 and positioned directly between the lateral flanges 15 of the shuttle is a cam 17 which serves as a support for the front end of the shuttle and also provides means for verticallyreciprocating the cla-w 16; that is, rocking the shuttle vertically on its pivot. I A

' Rotatable withA the shaft 7 and preferably carried upon the gear 6 is a cam ring 18, the peripheral edge of which is adapted to be engaged by the bifurcated lug or ear 19 on the shuttle 11. This lug 19 is preferably integral with the shuttle 11 and is turned at right angles from the upper edge therefor for engagement with the cam ring 18. Obviously therefore, rotation of the cam ring 18 will cause the shuttle 11 to ,reciprocate longitudinally inasmuch as the lug 19 follows the cam ring including the inwardly formed portions 20 thereof.

Obviously, the cam 17 effects one complete vertically reciprocating film feed and re= turn movement of the claw 16 with each revolutiony thereof. Likewise the cam ,ring

18 edects one complete longitudinal vfilm engaging and return movement of the claw 16 with each revolution thereof. The two cams'17 and 18 are arranged in such timed relation that the cam 18 will effect film engaging andl disengaging movement on the part of the claw with but one of each plurality of feeding movement of the claw, and as preferably constructed, the film is advancedduring but one of each two revolutions of the cam 17. u The result 'of this timed relation between the cam and the shuttle is that the film advancing periods are relatively short and the rest periods are corout of engagement with said lm and supported by the pin 28 engaging in the elongated slot 29 in said member. @ne end ot this member 2? is 'formed as a claw as at 30 and the opposite end has pivoted connection with the upper end of a link 31 pivoted intermediate its ends on the shaft 27. The lower end of this link is provided with a. pin 32 engaging in a slot 33 in the shuttle 11. The result oi: this arrangement is that when the shuttle 11 is moved out of film engaging position, the link 31 will move the member 27 into ilm engaging position, whereby to hold the ilm against movement during' the rest or projection period. Ubviously, also, upon movement of the shuttle 11 into film engaging position, the member 27 will be withdrawn irom the iilm, permitting the claw 16 to feed the same.

A strip of motion picture ilm 21 is led over a guide member 22. and is held i n iiatengagement therewith by a suitable iilm gate 23, for ,projection through the usual lens member 24.

l have illustrated one form of motion picture lm with which my intermittent mechanism is particularly adaptable, but it will be clearly understood that I do not limit myself thereto. This ilm 21 is asshown clearly in Figure 2 provided with a single central row of periorations at 25, leaving spaces on each side thereot1 for the picture frames 26. Theclaw 16 engages the central perforations 25 and the illuminating arrangement forthe projection of the picture frame (not shown) is in such case so positioned as to project through one row of picture frames only'. With this type of film', the same may be reversed and the row on the opposite side of the perforations projected. It will be obvious to those skilled in the art, however, that my improved ilm moving mechanism is equally adaptable to the regular standard motion picture film having perforations along the'edge thereof. Ob-

Leegte@ Iguide for said shuttle, a pair of spaced flanges on said shuttle, a cain rotatable between said flanges'i'or reciprocating said shuttle and claw for lm feeding and return,

a bifurcated lug on said'shuttle and a second cam engaging said lug and operable in timed relation to said iirst cam :tor moving said shuttle and claw to and from film engaging position.

3. An intermittent lm moving mechanism comprising a shuttle plate having a claw at one end, a pair of spaced flanges extending laterally from said`shuttle, a rotatable cam between said flanges :tor reciprocating said shuttle Jfor iilm 'feeding and return, a bifurcated lug on said shuttle, and a second rotatable cam `engaging said lug and operable in timed relation to said first cam for moving said shuttle to and from `ilm engaging position. f

ln testimony whereof, I aix 'my signature.

' FREEMAN H. OWENS.

viously, also, the film moving member 11 could be provided with two claws instead of the single claw 16 if desired. Many other changes in details of construction and operation may be made without departing from the spirit and scope of my invention. 'I do not limit myself therefore, to the'exaet structure herein shown and described other than by the appended claims.

Iclaim: Y

1. An intermittentv film moving 'mechanism comprising a shuttle having a claw at one end and a slot `at its oppositeend, means engaging in said slot for supporting and' guiding said shuttle at that end, a cam engaging said shuttle adjacent said claw for supporting and moving the same for film feeding and return, a'bifurcated lug on said shuttle and a second cam engaging said lug and operatedin timed relation to said first

Images