US1303418A - Photographic-printing apparatus - Google Patents

Description

Y G. E. TORNSO.

PHOTOG'RAPHIC PRINTING APPARATUS.` APPLICATION FILED Au ;.I9. IsIa.

Patented May l13, 1919.

GUSTAF E. TOBNSJO, F ST. PAUL, MINNESOTA.

PHOTOGRAPHIC-PRINTING APPARATUS.

Specification of Letters Patent.

Patented May 13, 1919.

Application led August 19, 1918. Serial No. 250,417.

To all whom z't may concern:

` lBe it known that I, GUsTAF E. ToRNsJo, a

citizen of the United States, residing at St. Paul, in the county of Ramsey and State of Minnesota, have invented certain new and useful Improvements in Photographic- Printing Apparatus, of whichthe following is a specification.

My invention relates to photographic printing apparatus. Heretofore, it has been largely the custom with establishments or persons engaged in making photographic prints for amateurs, and other persons as well, to mark each print or to place an identicaftion number on the back thereof where it remains after the prints have been finished. The different orders for prints that come in are usually designated by successive numbers and the number assigned to any particular order is placed on the back of all of the prints belonging to that order. If the numbers are put on in pencil, some additional time is required even when this is done hurriedly and there is always a possibility of error due to placing the wrong number on the print and also on account of numbers being more or less illegible. Furthermore, many persons dislike having' marks or numbers on the backs of their prints, especially when these prints are left unmounted. The object of my invention, therefore, is to avoid the above disadvantages by providing an attachment for photographic printing apparatus by means of which one or more edges of the printing paper may be printed with identication characters at the time when the prints are made from the negatives, these characters bein produced on the edge of the paper whic 1s trimmed oi after the prints have been developed and dried. In carrying out the process the waste ed es are trimmed off at the time when the prints are sorted into vtheir proper groups and hence an identification mark on each print is no longer necessary.

The full objects and advantages of my invent-ion will appear in connection with the detailed description thereof and are particularly pointed out in the claims.

Referring to the drawings which illustrate the application of my invention in one orm,-

Figure 1 is a view in perspective of aconventional form of photographic printing apparatus in connection with which my inven- .tion is employed.' Fig. 2 is an enlarged top plan'view of my attachment. Fig. 3 is a view in section on the line 3-3 of Fig. 2. Fig. 4 is a sectional plan view of the letter disk. Fig. 5 .is a section on the line 5-5 of Fig. 4.

In the drawings,12 designates the table of a printing apparatus supported on a stand 14 and having a pivoted pad member 1G adapted to be operated in customary manner to hold the negative 18 (either a plate or a film) and the printing paper 20 in close contact upon a transparent plate 22 set into the table and underneath which are lamps 23 adapted to be switched on and oi in the customary manner. These parts are embodied in apparatus of well known construction and need not be described further. Adjacent to adjoining edges of the transparent plate are stops 24 and 26 secured to the table by screws 28. A guide rod 30 is secured to the table adjacent and beyond the stop 24 by attaching members 32 and 34 while a guide rod 36 is secured to the table by an attaching member 38 and the attaching member 34. The guide rod 36 is on the opposite side of the table from the stop 26. The rod 30 serves to guide a slidable cylindrical member 40 having a lug 42 thereon for operating it and having a lug 44 to which is secured a thin masking strip 46 of durable material. This strip is provided with a hole 48 adjacent which are two rotatable disks 50 and 52 secured to the strip by rivets'passing through their centers and through the strip. Both disks are provided around their peripheries with the ten numerals from 0 to 9 cut through the material of the disks. These disks are so located relatively to the hole 48 that any number from 1 to 99 may be o vious that by` a suitable arrangement of disks, larger numbers may be indicated ifv desired. Y The rod 86 previously referred to serves to guide a slidable cylindrical member 54 having a lug 56 thereon for operating it and a lug 58 to which is attached a thin masln'ng strip 60 of durable material. This strip is provided with a hole 62 adjacent which is a rotatable disk 64 secured to the strip by arivet 66 passing through the cen- 'any desired number of the letters of the alphabet, and these letters are cut through the material of the disk, the latter being so located relatively to the hole-that any one of the letters may be made .to register therewith. By referring to Fig. 2, it will be seen that the distance of the holes 48 and 62 from the inner edges ofthe strips in which they are Vcut is the same as the distance of the stops from the adjacent edges of the glass 22. This insures the characters being printed upon the waste edge of the printing paper when-the strips are properly positioned. The letters are intended to indicate which particular machine has been used in making the prints while the numbers indicate the particular order or batch that is being printed.

The operation and advantages of my invention will be apparent from the foregoing description. In the use of the apparatus, the negative is placed upon the plate 22 with `two of its edges in contact with thestops 24 and 26. rPhe masking strips 46 and 60 preferably lie directly uponthe plate 22 so as to be underneath the negatives and they are moved along. the guide rods so as to be in proper position relatively to the edges of the negative according to the size -of the latter. The disk 64 of course has to-be set Aonly, once to designate the particular machine. The disks'O and 52, however, are set to correspond with the number assigned tov a particular order orbatch each time that the printing ofa 'different order or batch is to The number does not have to be changedl until another order or batch is to be printed. The printing paper`20 of the proper size is placed with its sensitized surface in contact with the 4negative and with tw'o of its edges against the stops 24 and 26 and with the other two edgesextending over the holes 48 and 62 as designated by thedot and dash lines 68in Fig. 2. The pad member 16 is then brought down upon the top of the printing paper and the print is made inthe usual manner by means of the lamps 23. The particular letter and number which have been set to register with the holes in the masking strips will be printed photographically upon the Waste edge of the picture. After the prints have been developed and dried, the waste edges thereof are trimmed oli', tion marks.

I claim:

1. A photographic printing apparatus comprising a support for the negative and the printing paper, a stop adjacent an edge of said support, sald stop being adapted for engagement by an edge of said paper, an adjustable masking strip adapted to be posi'tioned underneath the edge of said paper opposite the aforementioned edge thereof, and means carried by said strip for printing indentiication characters upon the waste edge of said paper.

2. A photographic printing apparatus comp-rising a support for the negative and printing paper, a pair of stops adjacent two adjoining edges of said support respectively, said stops being adapted for engagement by adjoining edges of said paper, a pair of adjustable masking strips adapted to be pos'itioned underneath the edges of said paper respectively opposite the aforementioned edges thereof, and means carried by each of said strips for printing identification c'harone of said' characters may be brought into register with said hole.

4. fA photographic printing apparatus comprising a support for the negative and the printing paper, a stop adjacent an edge of said support, said stop being adapted for engagement by an edge of said paper, an adjustable masking strip adapted to be positioned underneath the edge of said paper opp'osite the aforementioned edge thereof, said strip being provided with a hole and a rotatable disk having a plurality of characters cut therethrough and extending around the periphery thereof, said disk being adapted for rotation whereby anyone of said characters may be brought into register with said hole. I

5., A photographic printing apparatus comprising a support for the negative and the printing paper, a pair of stops adjacent two adjoining ed es of said support respectively, said stops ein adapted for engagement by adjoining edges of said paper, a pair of guide rods adjacent two adjoining thus removing the identiicaedges of said support respectively, an adcarried by each of said strips for printing justable masking strip slidabl mounted on identification characters upon the waste each of said guflde rods, sai strips being ediles of said paper.

adapted .to be positioned underneath the testimony whereof I hereunto aix my 10 5 edges of said pa er respectively o posite signature.

the aforementioned) edges thereof, undp means GUSTALF E. TORNSJO.

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