US1615880A - Developing container - Google Patents

Description

Feb l 1927' F. F. LUCAS DEVELOPING CONTAINER Filed Feb. 25, 1922 4 sheets-sheet 1 Feb. 1,1927. 1,615,880

F. F. LUCAS DEVELOPING CONTAINER A 4 Sheets-Sheet 2 Filed Feb. 23. 1922 Feb. 1 1927. 1,615,880

F. F. LUCAS DEVELOPING CONTAINER Filed Feb. 25. 1922 4 sheets-sheet 5 Feb. 1,1927. F. F. LUCAS DEVELOPING CONTAINER Filed Feb. 23, 1922 4 Sheets-Sheet 4 Patented Feb. 1 1927.

UNITED STATES FRANCIS E. LUCAS, F EAST ORANGE, NEW JERSEY.

DEVELOPING CONTAINER.

Application led February 23, 1922. Serial No. 538,535.

',lhis invention relates to receptacles for developing photographic films and like' articles.

An object of this invention is to provide improved means in compact form for developlng photographic films and llke articles of relatively long ength, whereby the man1pu lation and developing ofthe film are more efl'ectually carried out.

A further object of the invention is to provide means for conveniently and readily receiving a film inA rolled condition and improved means for separating the convolu* tions of the roll to afford access by the developing .fiuid to the entire sensitized surface of the film.

A further object of the invention is to provide a device, all parts of which subjected to chemicals are of non-corrosive metal or like inert material; a further object is to arrange the movable parts of my device in a manner to safeguard againstdislocation when in use or when assembling or disassembling.

With the above and other objects in view, a preferred form of my invention comprlses a rotary container, a removable support thereinlfor receiving the rolled. film, a member for holding the free end of the film, and a guide member cooperating with such hold ing element and provided with spirally eX- tending means for guiding the convolutions ot the film upon being unwound and for holding the convolutions apart and a cover provided for means for admitting the developing fluid through its inlet and capable of rotation relative to the container While protecting the enclosed film from the light, which rotative movement in coaction with the holding member'and the guidingmeans causes the film to be unwound. l

Further features and objects of the invention will be more fully understood from the following detail description and the accompanying drawings, in which- J Fig. 1 is a side elevation of t-he developer,l showing the cover Aassembled and one locking hook in locked position and the other locking hook in unlocked position;

Fig. 2 is atop plan view of F' 1; Fig. 3 is a bottom plan view olfgthe developer, and partially broken away on section line 3-3 of'Fig. 5;

Fig. 4 is a vdetail bottom plan view of the cover and attached spiral guide member;

Fig. 5 is a vertical ,sectional elevation viewed on section line 5-5 of Fig. 2;

Fig. 6 is a perspective view ofthe false bottom and of the member for holding the free'end of the film:

Fig. 7 is a detail perspective view of the trap in the inlet of the cover;

Fig. 8 is a detail perspective view of a( collet;

Fig. 9 is an exploded view showing, bottom to top, firstly, the container; secondly,l the false bottom, with a film roll positioned on itsksupporting member, and its free end secured to the holding member, both carried by the false bottom, and thirdly, the guide member and cover; f

Fig. 10 is a perspective view showinga modified form of the invention in which the film roll is held within a resilient housing during the stage of assembling the developing device, to safeguard against self-unrolling of the film;

Fig.' l1 is 4a vertical central section of Fig. 10; and

Fig.` 12 is a detail sectional view, on an enlarged scale, on line 12-12 of Fig. 11.

Referring to the.v drawings, and particularly Fig. 9, the developer comprlses the container 1 0 shown in the form of a round vessel having `on its inner face the stop .11 adapted to receive any one of the notches 12 of the false bottom 13, and serving tov preclude rotation of the false bottom 13 as will be understood moreI fully hereinafter.

The container 10 is also provided with the oppositely ldisp`osed cam locks 14, lsee also Fig. 1, for locking thevcover 15. Each camv lockl comprises a base 16 riveted or otherwise secured to the exterior of the can, a-link 17 and a. hook member 18 pivoted at one end to the free end of the link 17 and' looped at its free endfor engagement with the cover when the lock 14 is moved to its self-lockingposition. -The false bottom 13 may be providedwith four'notches-12, see

Figs. 6 and`9 referably formed by partlally slitting at the'fcirculsredge o f the plate 13 and bending down the material between the slits to, form the depending lugs 19 serving as feet of the false bottom to rest on the bottom of the container 10, as is indicated in Fig. 5.

At the center of the false bottom 13 is provided an opening 20 about which is secured the centrally recessed disk 21 riveted at 22, 22, to the false bottom 13 and serving as the support for one of the end disks 23, see Fig. 9, of the spool 24 of the film roll. The downward end 25, see Fig. 5, of the rod 26 passing through the spool 24 is received within the recess of the disk 21 and the opening 2O of the false bottom 13. Upon placing the false bottom 13 with one of its notches 12 about the stop 11, see Figs. 5 and 9, the false bottom is prevented from rotation relative to the container 10.

Extending radially from the central opening 20 of the false bottom 1,3, I provide the slot 26 through which extends the bottom end 27, see Fig. 5, of the member 28 for holding and pulling the protecting paper to which the filmis attached as will be understood, to unroll 'the same.

The lower end 27 of the holder member 28 is slidably retained in the slot by 'means of the upper washer 29 and the lower washer 30 secured by swaging or otherwise to the end 27 of the holder 28. The holder 28 is provided with the longitudinally extending slot 31 ythrough which is threaded the free end`32 of the protecting paper to which film is attached. t the upper end of the holder 28 I swage or otherwise secure the block 33.

The guide member 34, see Figs. 9, 5 and 4, comprises an upper plate 35 on whose lower face depends the irally arranged strip 36, as is indicated in ig. 4, or e uivalent; the outer end 37 of the spiral strlp 36 may be secured bv rivets 38, 38, to the outer circular side 39 of the guide member 34. The spiral stri 36 at its inner end is bent at 4() curvedly bac on itself to form a substantial] circular opening, andagain bent at.41,1n the reversed substantially circular curve to form the opening 60 within which is received the film roll 24 and its aligning rod 26.

At the top of the circular opening 60 is secured the friction colle-t 42, see Fig. 4, secured by rivets 43, 43, to the end face of the upper plate 35 of the guide member 34, which friction disk 42, shown in perspective in Fig. 8, is slitted, as is indicated at 44, 44, to provide for the resilient tongues 45, 45., adapted as `1s indicated in Fig. 5, to resiliently engage and brake the upper disk 46 of the roll spool 24 when unrolled. The up er end 47 of the spool rod 26, is received wit in the central opening of the disk 42.

The upper plate 35 of the guide member 34 is provided with spaced slots 48, see Fig. 4, to afford passage for the developing fluid.

The cover 15 of the'container 10 is preferabl formed at its circular periphery with the old 49 and the downward, inwardly resilient flange 50 serves as an apron when the cover is positioned on the container 10, as is indicated in Fig. 5. When assembled, the guide member 34 including the upper plate 35 andthe spiral 36 may be held within the fold 49 of the cover 15.

The cover 15 is provided with the receiver 51, see Fig. 5, in which is located the trap 52, formed, as is indicated in Fig. 7, of metal having the spaced, downwardly turned extensions 53 serving as feet, and the spaced, upwardly turned extensions 54 for engagement with the top 55 of the receiver 51 to hold the trap 52 in approximately central position. The top 55 of the receiver 51 is riveted as is indicated at 53, see Figs. 2 and 5, to the upper flange of the receiver 51 to bind the trap 52 in its central position. The top 55 is provided with the inlet 56 and the bottom o the receiver 51 is provided with an outlet 57, see Fig. 5; in forming such outlet 57 the material of the bottom of the receiver 51 is preferably turned and swaged to bind the receiver 51 to the cover 15, as a unit.

When using my developing device, the cover 15 is removed, while the false bottom 13 may be left in position within the container 10; `upon removing the cover the guide member 34 is removed therewith. The roll film 24 is positioned upon the centering rod 26 and the free end 32, of the protecting paper is threaded through the slot 31 ,of the holding member28. Upon replacing the cover 15 and the guide member 34, the block 33 of the holding member 28 is received within the spiral slot, see Fig. 9, and the spool of roll film 24 is passed within the circular opening 60. The developing fluid is now poured through the inlet 56 of the receiver 51, from whence, as is indicated by the arrows in Fig. 5, it passes by gravity about the trap 52, thence through the outlet 57,`

thence over the upper plate 35, through the slot-s 48 and thence into the container 10. The amount of developer is added to bring the level of the developer to the proper height, as will be understood. The stopper 61 of cork or similar material is then positioned in the opening 56. The cam locks 14 are now closed to partial locking position. While holding the cover 15, say with the left hand, or otherwise, the container 10 is rotated by the other hand in clockwise direction, as is indicated by the arrow 62 in Fig. 4, thereby rotating` the false bottom 13 and therewith the holding member 28 is actuated through the passage between the spiral convolutions 36 of the guide 34and progresses the film and protecting paper within the passages of the spiral convolutions 36, until the holder 28 is brought to a final position, say at theterminal location 6l, see

lltl

lcontainer 10. The block 33 Fig. 4. At 63, in Fig. 4, the holder'28, is indicated at an intermediate position. In such movement of the holder 28 it is guided at its lower end by the slot 26 to move outwardly radially relatively to the false bottom 13 and the false bottom 13 is prevented by the stop 11 from rotation relative to the at the upper end of the holder 28 is held from unwinding by engagement with the opposite faces of the spiral passage, thereby preventing the end of the protecting paper of the film from being pulled out of the Slot 31 of the holder 28; the friction disk 42 brakes the spool as the film is thus unwound.

In the operation of pulling the film through the spiral convolutions, the clamps 14, 14 hold the cover 15 from springing from the upper edge of. the circular side of the container 1() while permitting rotation of the 'container 1() relative toits cover 15,` and accordingly the downwardly extending flange 50 with the outer periphery of the plate 35 of' the guide member 34y located Within t-lie fold 49, protects the film from leakage of light.

After the film has been fully-developed, the cork 61 is removed, and the' container 10 is then inverted to pour out the developing fluid; the fluid at this stage takes the paths reversed to those indicated by the arrows in Fig. 5. The film may be washed thoroughly While still in the container 10 by pouring in fresh water into the container 10, pouring the same out and rewashing as often as desired.` The container may then be opened and the film taken out and at once fixed in the usual manner. Or, the film may be taken out of the container and washed in a suitable bath and'thereafter fixed.

It may be also desirable to fix the film while still in the container and after rewashing as above described, the fixing liquid is poured into the container 10. the precaution being taken that the fixing liquid be thoroughly washed from the container beiore another film is developed.

IrVlien it is diredto develop another film thel holding member 28 is pushed from its outer position in the slot 26 to its inner end and the operations hereinabove described are repeated.

From the above, it will be seen that I have provided in. most compact form, a developer for roii films, in which al1 the parts may be made of metal or other non-corrosive o1 inert material, and the movable parts of' which are arranged to obviate dislocation. My invention secures effectual access to the emulsified face of the film by the developer' and the various lconvolutions of the film are positively precluded from contacting one another at all stages.'

It will also be noted that the film when unlolled is positioned with its sensitized' face 1n a vertical plane and that all portions throughout the length of the film are exposed to the chemicalfiuid. The length of the spiral may be selected for the particular lengths of the usual dimensions of films now on the market; it will be apparent that the length of the spiral may be chosen to accommodate more than one film length, the holder for. the lesser film lengths attaining a position between the intermediate convolutions of the spiral.

- For the purpose of expediting the flow of the fluid within the convolutions of the spiral, I may provide the vents 65, see Figs. 4 and 5 in the upper plate 35 of the spiral holder 36, affording egress of the air and entrv of the fluid therethrough.

v The spiral 36 may be supported in any suitable manner, and in the drawings I have indicated as one preferred form, the pin 66 passing through the slot formed at the portion 4 0 of the spiral which is bent back on itself, its head 67, see Fig. 9, engaging the llower edge of the spiral 36 and its upper end 68 soldered or swaged or otherwise secured in a suitable opening inthe top late 35. The spiral 36 may be supported rom the upper plate 35 at points intermediate its terminal portions by means of the teats 69 integral with the spiral 36, passing through suitable openings in the top plate 35 and bent into engagement with the upper face of the plate 35.

Preferably, means are provided forpreventing unrolling of the film when positioned on the false bottom 13 preparatory to insertion with the spiral 36. I have shown in Figs. 10, 11 and 12 the resilient, enclosing clip 75, loosely mounted on the circular plate 76, secured by rivets 77 or the like to the false bottom 13, such clip extending about the film roll when located therein, the clearance 78 between the free ends 79, 80 of the clip 75 affording a path for the free end'of the protecting paper to be secured in the slot 31 of theholder pin 28 and to permit the film to be paidvout when the film has been positioned within the opening 60. It will be notedthat the enclosing clip '7 5 upon receiving the film roll 24, as is indicated in Fig. 11, is of a. dimension tobe readily received within the opening 60. The clipf75 may be stamped from metal, to have the lower, reentering fiat portion 81, to loosely engage under and about the circular stud 76 to prol vide for free movement of the 'clip 75 thereon.

The gasket 70 is provided for sealing the joint between the upper edge of the coi'itainer 10 and the cover l5. ,y i

If desired, the container, with the cork 61 positioned in .the inlet 56,may be inverted intermittently during the process of developing to cause a circulation of the developing fluid and dislodge any air bubbles.

It will also be noted that the spacing between the spiral convolutions are of relativel large magnitude .whereby to afford amp e clearance for the film and its sup orting paper and is of sufficient magnitu e to react against the tendency of air bubbles to l g necting with the free end of the film and for moving the free end of the film through said guide member and means connecting said cover with said movable means for actuating said movable means.

2. Apparatus for developing or fixing roll films comprising a container, a support therein for a film roll, a cover for said container, means for holding said support in non-rotative relation to said container, a holding member for the free end of the film, a guide member carried by said cover and having a curvedly extending passage and movable means for connecting with the free end of the film for movement of the free end of the film through said guide member.

3. The combination of a'circular container,

a circular cover for said container, a guide member carried by said circular cover and having an opening for the reception of a film roll and further having a passage communieating with such opening and for receiving the film when unrolled and means disposed within said container for connecting with the free end of the film and directing the free end of the film through said passage.

4.' The combination of a container, a cover therefor, a guide member having an opening for the reception of a film roll and further having a passage communicating with such opening for receiving the film when unrolled, means for attaching said guide member to said cover and means disposed within said container for unrolling the film and directing the unrolled portion of the film through said passage.

5. The combination of a container, a cover therefor,a guide member having an o ning for the reception of a film roll and urther having a passage communicatingwith such opening for receiving the -film when unrolled, means for attaching said guide member to said cover operated upon relative rotation between Said container and said cover, and

means disposed within said container for un rolling the film and directing the unrolled portions of the film through said passage.

6. The combination ofa container of substantially symmetrical cross-section, a cover therefor of substantially similar symmetrical cross-section, a guide member having an opening for the reception of roll film in rolled 'condition and further comprising spirally arranged convolutions providing a spiral passage communicating with i said opening, an arm for holding the free end of a roll film and means operative from the exterior iof said casing for moving said arm through said spiral assage, to thereby unroll said film roll and) pull the same through said spiral passage, said exterior operative means including a false bottom for said container and provided with a slot for movably locating said arm. y

7. The combination of a container, a cover therefor, a guide member having an opening for the reception of a roll film,in rolled condition and further comprising spirally arranged convolutions providing a spiral passage communicating with said opening, an arm for holding the free end of a roll film and means operative from the exterior of said casing for moving said arm through said spiral passage, to thereby unroll sald film4 roll and pull the same through said spiral passage, said exterior operative means including a false bottom for said container and provided with a radially extending slot for movablyT locating said arm and means for pivoting the spool of the roll film on said false bottom.

8. The combination of a container, a cover therefor, aguide member having an opening for the reception of a roll film in rolled condition and further comprising a spirally arranged guiding wall providing a spiral passage communicating with said o ning, an arm for holding the free endof t e protecting pa er of a roll film and means operative from t e exterior of said casing for moving said arms through. said spiral passa e, to thereby unroll said film roll and pu the same through said spiral passage, said exterior operative means including a false bottom of said container and provided with a slot for movably locating said arm and means for precluding rotation of said false bottom relative to said container.

9. The combination of a container, a cover therefor, a guide member having an opening for the reception of a roll film in rolled condition and further comprising a spirally arranged guiding wall providing a spiral passage communicating with said o enin an arm for holding the free end o a rol film, and means operative from the exterior of said casing for'moving said arm through said spiral Vpassa e, to thereby unrollsaid film roll and pul the same through said spiral passage, said exterior operative means including a false bottom for said container and provided with a radially extending slot for movably locating said arm, a stop carried by said container for restricting rotation of said false bottom relative to said container and means for pivoting the spool of the roll film to said false bottom.

10. The ycombination of a container of substantially circular cross-section, a cover therefor of substantially circular cross-section, a guide member having an opening or the reception of a roll-film in rolled condition and further comprising a spirally arranged guiding Wall providing a spiral pas'- sage communicating with said opening, a slotted arm for attachment for the freeend of a roll film and means operative from the exterior of `said casing for moving said arm through said spiral passage, to thereby unroll said film roll and pull the same through said spiral passage.

11. The combination of a container of circular cross-section, a cover therefor of substantially circular cross-section, a guide member having an opening for the reception of a roll film in rolled condition, and further comprising a spirally arranged guiding wall providing aspiral passage communicating with said openin holdin the free end of ne protectingpaper of a ro l film, and means operative from the a slotted arm forexterior of said casing for moving said arm through said spiral passage, to thereby unf roll said film roll and pull the same through said spiral passage, said exterior operative means including a false bottom for said container and provided with a radially extend- .ing slot for movably locating said arm, means for pivoting the spool of the roll film to said false bottom, and a stop carried by said container for restricting rotation of said false bottom relative to said container.

l2. The combination of a container, a cover therefor, a guide member having an opening for the reception of a film roll and further having a passage communicating with such opening for receiving the film l when unrolled, means for attachingy said guide member to said cover and light-excluding fluid inlet means for said container.

13. The combination of a container, a cover therefor, a guide member having an 'opening f'or the reception of' a film roll and further having a passage communicating with such opening for receiving` the film when unrolled, means for attaching said guide member to said cover operated upon relative rotation between said container and said cover, and light-excluding fluid inlet K means for said container.

In testimony whereof I have signed this specification this 20th day of Februar 1922.`

FRANCIS F. LU AS.

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