US1560959A - Photographic-printing device - Google Patents

Description

Nov. 10 1925 1,560,959 T. C. WILLSON PEOTOGRAPHIC PRINTING DEVICE Filed May 23. 1924 2 Sheets-Sheet l 25 E W i 1,560,959 T. c. WILLSON Y v PHOTOGRAPHIC PRINTING DEVICE Nov. 10, 1925.

Filed May 2:; 1924; 2- Sheets-Shale Patented Nev. if,

UNITED STATES THQMAS CARROLL WILLSON, OF PHILADELZPHIA, PENNSYLVANIA.

PHOTOGRAPHIC-PRINTING- DEVICE.

Application filed May 23', 1924,. Serial No. 715,412.

T!) (1-1; LG/101M it may concern.-

Be it known that I, Tnonas Gannon SVILLSON, a citizen of the United States. re- 1 siding at Philadelphia, in the county of Philadelphia and State of Pennsylvania,

have invented certain new and useful linproveinents in Photographic-Printing Devices; and I do declare the following to be a full, clear, and exact description; of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention. relates to photographi' printing apparatus by which sensitized paper or a positive motion picture film may be printed from. a negative motion picture film.

The principal object of the invention is to provide a simple and inexpensive printer of this character which is small and co1-n pact so that it may be easily carried from place to place and used in any dark room, and by which either paper or film may be printed rapidly and efiicient-ly by the amateur as well as the professional photographer.

According to the invention the device is in the form of a hollow casing or box having arranged therein a sens tized film com partment and an adjacent negative film compartment. These compartments are provided with adjacent film passages which are arranged to guide the films into contact i1nmediately aft-er they pass therethrongh. The device also contains a novel film guiding means which extends from the film passages of the two compartments just men tioned to one end of the cas ng. One end of the guiding means includes a means for moving the films and the other end includes a means for retarding the films. so that as they pass by the exposure light they will be maintained in printing contact. The device also in lndesanovel arrangement of an observat on window and light by which the density of the negative film may be ob served just before it passes into printing contact with the sensitized film.

The present application is a continuation in part of my application Sr. 30.1358321 filed August-20. 1923.

The invention is hereinafter more specifically described with reference to the accompanying drawings. in which similar reference characters are used to designate the corresponding parts throughout the several views. and in which V Fig. l is a front elevation of a device constructed in accordance withthe principles of the invention, illustrating two of the cover plates in open position and broken away and in section and the remaining cover plate closed but broken away with certain other parts in section.

Fig. 2 is ahorizontal sectional View through the device taken substantially on the: line 2-2 of Fig. 1.

Fig. 3 is a vertical transverse sectional view taken substantially on the plane indicated by the line 3.3 of Fig. l.

' Fig. 4 is a vertical longitudinal sectional view of a portion of the device, illustrating more particularly the above referred to observation window and observation light and the film guiding means associated therewith.

Fig. 5 is a vertical transverse sectional view of a portion of the device taken substantially on the plane indicated by line 55 of Fig. 1; and

Fig. 6 is a vertical longitudinal se"tional view of a portion of the film guiding means.

The preferred embodiment of the inventionas illustrated in the drawings comprises a hollow casing or box 1. the front of which is open but provided with a hinged coverQ. Preferably the cover 2 is hinged at 3 to the lower side of the casing, so that when. the device is in use it may be swung downwardly to a substantially horizontal position. it being understood that the casing itself will be disposed in the upright position shown in Figs. 1 and 3 when in use. When the cover 2 is closed it may b secured in this position by means of suitab e co-acting elements 4 carried by the cover and the upper side of the casing. The casing 1 is relatively thin, inasmuch as the side formed by the cover 2 and the opposite side are in closely spaced relation. Access to the casing may. however. be obtained by swinging cover 2 downwardly.

Arranged within the casing 1 are merging partitions 5 which form an upper sensitized 'filnr compartment 6 and a lower negative film compartment 7. These compartments may'of course be arranged otherwise than as'shown. but it is probably essential that they be disposed. adjacent each other, for they are each provided with film passages,

the numeral 8 designating the passage leading from the compartment 6 and the numeral 9 designating the passage from the compartment 7 As will be observed these passages 8 and 9 are disposed adjacent each other and are arranged so as to guide the films into printing contact immediately after they pass therethrough. In other words, it is essential that the partltions merge some where near the center of the casing, and that the passages 8 and 9 leading from adjacent compartments be close together so that they will merge into the adjacent end of the film guiding means which is hereinafter described.

The upper sensitized film compartment 6 is preferably provided with a hinged cover plate 10 so as to exclude light from the compartment even though the main cover plate 2 may be open. The other compartment 7 is likewise provided with a cover plate 11. This is hin ed as at 12 along its lower edge so that it may be swung downwardly to lie substantially horizontally over the main cover plate 2 when the latter is open.

In each of the compartments 6 and 7 there is mounted a rod 13. upon which the films may be supported. In the drawings the numeral 14: designates a roll of sensitized film supported upon the rod 13 in the compartment 6, the numeral 15 designates a roll of negative film supported upon the rod 13 in the compartment 7. Mounted wi hin the casing 1 and extending from the film passages 8 and 9 to one end of the casing is a novel film guiding means. This means consists of a substantiallvtriannular shaped block 16 arranged as shown in Figs. 1 and 6 of the drawin s and having its upper side disposed so that the two strips of film come into printing contact and slide thereover a ter they pass through the passa es 8 and 9. v The corner o the block 16 remote from the passages 8 and 9 is rounded as at 17. and th s ro nded edge as we l as the upper side of the block is covered with a str p 18 of felt or other suitable material which would retard the film as it passes thereover. The films are maintained in printing contact. with one ofthem in engagement with the strip of felt 18 by means of a block' 19 mounted upon a vieldable bracket 2 se ured to the rear side of the casing. This block 19 has its lower surface and ends covered with a strip of felt 21. which bears upon the uppermost strip of film. In order to guide the elements prop erly around the rounded corner or edge of the blo k 16 the outer s dev of this corner or edge 17 is flan ed,jthis preferablv being done by means ofa circular plate 22.-

After passing around the rounded corner or ed e 17 of the block 16 the films pass around thelowe'ii-sideof a roller 23 which is rotatablyinountedupmi a spindle secured.

to the back of the casing. From there the films pass around another roller 24, which is fixed upon a rotatable shaft. The rear end of this shaft extends back of the casing 1, where it is provided with an operating handle so that it may be rotated. At each end the roller 24 is provided with a sprocket wheel 26 adapted to engage the series of perforations along the edges of the films. It will therefore be seen that as the handle 25 is turned and the roller 24 and sprocket wheels 26 are rotated the films will be compartments 6 and 7.

After passing around the roller 24 the films pass throu h a slot 28 arranged in the film may be passed into the developing ap aratus.

In order to hold the two films in a proper enga ement with the sprocket wheels 26, a roller 29 s arranged to bear upon them.- As will be observed from Fig. 5, this roller is provided at its ends with peripheral ogives 39. into which the sprocket wheels 26 t. offset relation upon the lower end of a plunger 31. This plunger 31 is slidaloly mounted upon the aforesaid end of the casing 1. It is preferably in the form of a plate having a pin and slot connection 32 with the end of the casing and is provided at its upper end with a rod 33 which passes throu h the aperture in an angular guide plate 34 secured to the end of the casing. Surrounding the rod 33 and disposed between the horizontal portion of the guide plate 34 and a similar portion of the plate 31 is a coil spring 35. This is adapted to vieldably maintain the plunger 31 in its lowermost position with the roller 29 in enga ement with the films. However, it permits the plunger and roller 29 to be raised so that the films may be disengaged from the sprocket wheels 26. When raised. the plun er 31 may be sli htly canted or tilted so that either a portion of it or the rear end of the roller 2-9 may hook over a shoulder 36 formed upon the rear wall of the casing 1 to hold the plun er and roller in rais d posit on. This position of the parts is llustrated bv dotted lines in Fig. 5.

Disposed within the casing 1 is a small housing 37. in which is mounted an electric light 38. The upper side of this housing has a slot 39 disposed close to and directly below the roller 23. and the light 88 is disposed directly below the slot. so that the rays of light from the bulb will pass through the slut39 on to the films as they pass around the roller 23. The cover plate 11 for the compartment '7 also closes the front of the housi g", it being provided with a por ion drawn through the guiding means from the 1 The roller 29 is mounted in an 4-0 designed to enter the front end of the housing.

The hereinbetore mentioned block 16 and the housing 3'? serve as partitioning means in conjunction with the partitions 5.

The other end of the casing 1 is provided with an observation opening 41. A hinged cover plate l2 fits in this opening. This cover plate is adapted to be opened by swinging it downwardly, and when closed it may be locked by a suitable element d3. Arranged in the compartment 7 in line with the observation opening 41 is a housing 44 in which is mounted an electric light bulb l5. This housing A is arranged in slightly spaced relation from the end of the casing 1 and from the lower side of the horizontal partition 5, so that it terms a means to guide the negative film 15 past the observation opening 41, that is, between said opening and the light as, on its way to the film passage 9. By this means the density of the negative film may be observedjust prior to the time that portion of the film is printed, so that the operator will be able to judge how fast to turn the handle 25.

If desired the device may contain a push and pull or other suitable switch 46 for controlling the electric current through the electric light bulbs 38 and 45.

In using the device the sensitized paper or film should be placed in the compartment 6 as hereinbetore indicated and the negative film should be placed in the compartment 7. The ends 01" these films should be passed through the passages 8 and 9, the negative film 15 being passed around the housing it-1t as shown in Fig. 1. After passing through the passages 8 and 9 the films will be brought into printing contact between the upper side of the block 16 and the lower side of the block 19. They will then pass in this relation around the rounded corner or edge of the block 16 and then around the lower side of the roller 2-3, then around the upper side of the roller 24 under the roller 29 and through the slot 28 in the end of the casing. With the parts arranged in this relation and with the various cover plates closed, the printing of the sensitized film may be done simply by turning the handle at the proper speed depending upon the density of the negative as can be observed when the cover as of the observation opening 41 is open.

From the foregoing description, taken in connection with the accompanying drawings, the construction, operation, use and advantages of the invention will be readily underste od, so that further explanation is unneces sary, except to en'iphasize that the device is of very simple and compact structure so that it may be easily moved from place to place and set up for use in any dark room.

It is obvious that various changes may he made in form, proportion, and in the various features of construction without departing from the spirit and principle of the in' vention or without sacrificing any of the advantages thereof, so that it is to be under stood that changes 01" this nature may be made without departing from the meaning and scope ot the appended claims.

I claim:

1. A photographic printer comprising a hollow casing provided on the inside with merging partitions dividing it into compartmentgstrip guiding means mounted in said casing and extending from the point where said partitions merge to one end of said casing, the partition structure at said point being provided with passages leading from two of said compartments, said passages merging into the adjacent inner end of said guiding means, the last mentioned compartments being adapted to receive a supply of developed negative and sensitized photographic strips and a. light mounted in one of said compartments other than the last mentioned to shine upon said strips as they pass along said guiding means.

2. A structure as specified in claim 1, in which the casing has closely spaced opposed sides, one of which is outwardly movable to give access to the compartments within the casing.

3. A photographic printer comprising a hollow casing provided on the inside with transverse partitions, said partitions merging at substantially the central portion of said casing, forming an upper sensitized photographic strip compartment, a lower negative film compartment beneath said strip compartment, and a lower exposure light compartment beside said film compartment, strip and film guiding means mounted in said casing and extending from the point where said partitions merge over one of the partitions forming said exposure light compartment to one end of said casin the last mentioned partition having a slot, the partition structure at said point being provided with passages leading from said strip and film compartments, said passages merging into the adj acentinner end of said guiding means, and a light mounted in said exposure light compartment below said slot to shine through the latter onto the strip and film as they pass along said guiding means.

4:. A device of the class described comprising a hollow casing having arranged therein a sensitized film compartment and an adjacent negative film compartment, said compartments being provided with adjacent film passages arranged to guide the films into contact immediately after passing therethrough, film guiding and feeding means mounted in said casing and extending from said passages to one end of said casing,

lUO

Said means including a driven roller provided with sprocket wheels at the ends thereof to engage the perforations with which the films are provided and a peripherally.

grooved roller co-operating With the first mentioned roller and said sprocket wheels, a plunger on which the last mentioned roller is mounted, said plunger being slidably mounted in said casing and being spring pressed into engagement with the first mentioned roller, a shoulder formed in said casing at a position to engage and hold said plunger with the last named roller out of engagement with the first mentioned roller while the films are being placed in the casing and guiding means, and an exposure light mounted in said casing to shine upon the films as they pass through said guiding means.

5. A structure as specified in claim 1, in

which the negative strip compartment is provided with an observation opening, a light mounted in such compartment in line with such opening, and means in such compartment to guide the sensitized strip between such light and such opening before it passes out of such compartment, so that the density of the negative may be observed.

In testimony whereof I have hereunto affixed my signature,

THOMAS CARROLL WVILLSON.

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