US810234A - Developing-machine. - Google Patents

Description

No. 810,234. EATER TED JAN. 16, 1906. W. MLTOWERS & H. S. HARRINGTON.

DEVELOPING MACHINE. APPLICATION FILED mm: 20,1905.

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Specification of Letters Patent.

Patented Jan. 16, 1:106.

Application filed June 20, 1905. Serial No. 266,102.

1'0 a whom it may concern:

Be it known that we, NILLIAM M. Townns and HERBERT S. HARRINGTON, citizens of the United States, and residents of Rome, in the county of Floyd and State of Georgia, have made certain new and useful Improvements in l)eveloping-Nlachines, of which the following is a specification.

()ur invention an improvement in ma chines for developing and. fixing photographic films; and it consists in certain novel constructions and combinations of parts hereinafter described and claimed.

Referring to the drawings forming a part hereof, Figure 1 is a vertical longitudinal section of our invention. Fig. 2 is a similar section of the cover. Fig. 3 is a detail oithe crank. Fig. 4 is a detail of the nut. Fig. 5 is a side view of the bracket. Fig. 6 is a top plan view thereof, and Fig. 7 is a detail of the clamp.

In the practical application of our inventionwe provide an outcr'cylindrical easing A, having a closed end a and an open end (1 An open-ended inner casing B is arranged to telescope Within the outer casing, packingrings 1) I) being arranged between the casing to prevent leakage of fiuid therebetween.

A cover C, having a flange c to fit without the ihner casing and a flange c to fit without the outer casing,is provided to close the open ends. Astud-shaft c is journaled vertically in the cover at the center thereof, a space 0 being provided encircling the shaft for a packing-ring to prevent leakage around the shaft. The inner end of the shaft is provided with a nut 0 cut away, as at c,to lit the slot in the end of the film-spool X, while the outer end is provided with a crank c 1' con vcuien ce in rotating the shaft.

A'support Dis secured to the inner face of the cover and extends into the casing, a bracket (1 being slidably mounted upon the support and having at its free end a pin d for engaging the opposite end oi the lilmspool. A set-screw d, traversing a scrcw-threaded opening in the bracket and engaging the support,is provided for maintaining the bracket in. its, adjusted position, and upon the support between the bracket and the cover is a U-shaped clamp d for securing the free end of the cover paper to the support.

A screw-tlncaded opening it is provided in the cover adjacent .to the edge thereof for l convenience in filling the casing, the opening 1 being normally closed by a screw-threaded I plug or cap 6. In operation the cover of the machine is removed, and, if necessary, the inner casing is drawn out a suilicient extent, so that the spool when in place will occupy only about half the length oi the casing. The lower half of the casing is then filled with any suitable developing fluid. The film spo0l is placed with the slot in engagement with the inner end of the stud-shaft, and the bracket is pushed up until the pin engages the spool, after which the set-screw is manipulated to secure the bracket in position. The seal of the film is broken and the paper cover of the l film unwound the proper distance. The slip of paper found on the end of the film is pasted to the covering-paper, the surplus coveringpaper torn oil", and the paper slip is wrapped around the support and the clamp moved thereover to secure it in place. The cover is placed on the casing and the crank turned from left to right a sulficient number of times to open. up the film, but not enou h to detach it from the spool. When this is done, the casing inverted to submerge the film in the fluid, the machine being gently agitated until the film is developed. After developing, the plug is poured off, and the casing is filled with water and agitated for a short time, after which the water is poured oil and a suitable fixing fluid poured into the casing. After fixing, the film may be was red in the usual way. It will be understood that the developing or of time and not by sight.

it will be evident from. the description that our invention while simple in construction is yet efficient in operation, the development and fixation being uniform throughout the length of the film.

By means of the adjustable support and the telescoping of the casing the machine may be at p ted for use with difi'erent widths of film. will be evident that the support D is made lon enough to support the largest size film-spool that may be used in the devel l oping-machine. The purpose of a tcloscopi ing casing is to provide sulnciont room ior containing the solution out of contact with in developing the largestthc liliirspool.

the casing not be extended l size filni should removed, the developing fluid fixing operation is determined by the lapse the solution will be all the time in contact With the film. 7

WVhen it is desired to extend the casing, the outer casing A unscrewed from the cover and slipped down on the inner casing a sullicient cxtcnt thatis, an extent to equal approximately the length of the film-spool. This increases the length of the casing an amount equal to the distance the outer casing is drawn oil the inner casing. The cover and inner casing remain in the same position with respect to each other that they were before.

llaving thus described our invention, What we claim as new, and desire to secure by Letters Patent, is-- 1. In apparatus of the character specified, the combination with a lilm-spool. 01'' a cylindrical casing comprising telescoping sections, a cover Forthe open end of the casing, and provided with a screw-threaded opening, a stud-shaft journaled in the cover, and having its inner end cut away to tit the slot in the end of the film-spool, a crank on the outer end of the shaft, a support secured to the cover and extending into the casing, a clamp on the support, a bracket slidably mounted on the support, a set-screw in the lnackct and engaging the support, a pin on the free end of the bracket for engaging the opposite end of the lilnr-spool, and a screw-threaded plug for engaging the opening in the cover.

2. in apparatus of the character specified, the combination with a tilmspool ot' a cylindrical casing comprii-iing telescopin sections, a cover for the casing provided with an opening, meai'is on the cover for engaging the slot ted end of the filin-spool and for rotz'tting the same, a support secured to the cover and extending into the casing, a bracket slidaloly mounted thereon, a set-screw in the bracket and engaging the support, a pin on the free end of the bracket for ei'igaging the opposite end of the filnl-SPOOl, and means for closing the opening in the cover.

2%. .ln apparatus of the character specified, the combination with a film-spool of a cylindrical easing comprising telescoping sections, a cover tor the casing, means on the cover l or engaging the slotted end of the film-spool and for rotating the same, a support attached to the cover and extending into the casing, a clamp on the support, means 011 the S1l]).)01i3 for engaging the opposite end of the ihnspool and means for adjusting the engaging means.

4'. In apparatus of the character specified, the combination with a film-spool of a cylindrical casing comprising telescoping sections, a cover for the casing, means on the cover for engaging the slotted end of the film-spool, m aans for rotating said engaging means, means secured tTTthe cover for engaging the opposite end of the film-spool and means for adjusting said last-na1ned engaging means. 5. in apparatus oi the character specified, the combination with a film-spool of a cylindrical casing, a cover for the casing, means on the cover for engaging the slotted end ol" the 'liln'i-spool and for rotating the same, means connected with the cover for engaging the opposite end ol the film-spool, and means for adjusting said engaging means.

Wl LLIAM M. lUlVEHS. llilfiitlil llt'l S. l'IAHHlN l'lON. l Vi tnesses c H. W. Rnnsn, S. F. MQ-xenunnn.

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