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Mar 22, 1885.J THE PHOTOGRAPHIC NEWS. 325 reverse or unsensitized side of the film, substantially a 8 described. 6. The combination, in a roller-holder, of the film-carrying rolls D and E, friction-pieces J and K, and springs b substanti ally as described. 7. The combination, in a roller-holder, with the film-carrying rolls, of a measuring-roll provided with a series of film-perfor ating devices arranged longitudinally of the roll, and the latter having its circumference equal to the length of the film required for a single exposure, substantially as described. 8. The combination, in a roller-holder, of the film-receiving roller E, provided with mechanism which prevents its reverse motion,and the film-carrying roller D, having connected there with the spring x, arranged to operate as a film-straining device, substantially as described. 9. The combination, in a roller-holder, of the removable film carrying roller D, sliding spindle c, and spring r substantially as described. 10. The. combination, with the film-receiving roller E, provided with ratchet h' and spring-pawl u, of the film-carrying roller D, provided with spring x, the outer end of which revolves against a friction-resistance, substantiallly as described. 11. In combination with the inclosing-case and the measuring- roller contained therein, the removable end piece carrying the indicator, the latter when the said end piece is applied to the case being brought into operative connection with said measuring roller, substantially as described. 12. The combination, with the roller D, of the spring x, collar z, and ratchet M, the inner end of said spring engaging notches in the collar 2, and the outer end resting in frictional contact with the teeth of ratchet M, substantially as described. 13. The combination, with the roller D, of the spindle c, collar z, spring x, and a frictional piece, M, attached to the holder, substantially as described. 14. The combination, with the roller D, of the sliding spindle e, and the collar z and spring x, arranged within a suitable recess in the wall of the holder, substantially as described. 15. The combination with the roller E, of the sliding spindle s, and ratchet W provided with a spring-pawl, and arranged within a recess in the wall of the holder, substantially as de scribed. 16. In a roller-holder for exposing photographic films, the combination, with the winding and unwinding rollers located in the inclosing case and provided at one end with the fixed bearings therein, of the removable side or end piece, and the devices mounted thereon for engaging the ends of the said rollers and affording bearings for the latter, substantially as described. 17. In combination with the supporting-frame of a roller holder, a rotary tension device independently mounted or supported upon said frame, and a spool upon which the film is wound detachably applied to said tension device, substantially as described. 18. In a roller-holder for photographic films, the combina tion with the frame, of the spindle supported therein and pro vided with means for engaging the end of the spool, and a yielding tension device applied intermediate the said spindle and the frame, substantially as described, whereby the spool can be removed, or applied to the tension device and spindle at will. 19. In a roller-holder such as described, wherein the film supply is wound upon a spool and drawn therefrom at intervals to expose a limited surface, and in combination with said spool, a longitudinally-adjustable Spindle provided with a means for engaging the end of the removable spool, and a yielding tension device applied to said spindle, substantially as described. 316,952. GEORGE Eastman and William H. WALKER, Rochester, N.Y., assignors, by mesne assignments, to the Eastman Dry Plate and Film Company, same place. “ Photographic film holder.”—Filed August 8th, 1884. (No model.) Claim.—1. The herein-described photographic film-holder consisting of the plate or support S, and open frame F, provided with clips C C, adapted to fit over two opposite sides of the support, and to hold the film against against the face side of the support, substantially as and for the purposes set forth. 3. Tho herein-described photographic film-holder, consisting of the plate or support S, and open frame F, having one or more truncated corners, D, and provided with clips, C C, adapted to fit over two opposite sides of the support, and to hold the film against the face side of the support, substantially as and for the purposes set forth. 317,049. William H. Walker and GEORGE Eastman, Roches ter, N.Y., assignors, by mesne assignments, to the Eastman Dry Plate and Film Company, same place, “Roller-holder for photographic films.”—Filed August 8, 1884. (No model.) Claim.—1. The combination, in an apparatus for exposing sensitive flexible photographic films, of two parallel rollers for operating the film, one of which is provided with a brake or friction device, while the other has applied to it a spring, which maintains the film in tension, substantially as described. 2. The combination, with the frame F F, of the spool C, hav ing friction device applied thereto, film-support I, reel D, spring R, and ratchet and pawl q r, substantially as described. 3. The combination, in a roller-holder, for exposing photo graphic films, of the spool C, reel D, film-support I, and guide rollers J and K, with a device acting to maintain the film in a tense condition during exposure, substantially as described. 4. In a roller-holder for exposing photographic films, the reel