Film-guiding tracks or channels in cinematographic apparatus

Claim 1

A FILM GUIDE TRACK FOR CINEMATOGRAPHIC APPARATUS FOR CONTROLLING THE BRAKING OF FILM AS IT MOVES LONGITUDINALLY ALONG SAID GUIDE TRACK COMPRISING TWO SPACED OPPOSING STRIPS HAVING V-SHAPED GROOVES MOUNTED ON A FIXED PLATE AND ADAPTED TO BE OPPOSITELY ENGAGED BY THE LONGITUDINALD EDGES OF THE FILM THEREBETWEEN, AT LEAST ONE OF SAID STRIPS BEING MOVABLE AND SUBJECTED TO THE ACTION OF SPRING MEANS TOWARDS THE OTHER STRIP, SAID STRIPS BEING INTERRUPTED IN THEIR LENGTHWISE DIRECTION ABOUT A PORTION OF SAID PLATE WHERE AN IMAGE APERTURE IS LOCATED, A FILM GATE AND A SHOE COOPERATING WITH SAID FILM GATE LOCATED AT SAID APERTURE BEING LOCATED ON EITHER SIDE OF SAID PLATE, SAID FILM GATE AND SAID SHOE IN COMBINATION BEING ADAPTED TO BEAR UPON PERIPHERAL MARGINS OF THE FILM, SAID MARGINS BEING EXTERIOR AT LEAST OF THE IMAGE TRACK, WHEREBY SAID STRIPS INSURE THE BRAKING OF THE FILM WHILE SAID FILM GATE AND SAID SHOE INSURES THE FLATNESS OF THE FILM AT THE LOCATION OF SAID IMAGE APERTURE.