US1430615A

US1430615A - Adjustable photographic mask

Info

Publication number: US1430615A
Application number: US259001A
Authority: US
Inventors: Baumgartel Henry
Original assignee: Individual
Current assignee: Individual
Priority date: 1918-10-21
Filing date: 1918-10-21
Publication date: 1922-10-03
Anticipated expiration: 1939-10-03

Description

HJB-AUMGARTEL ADJUSTABLE .PHOTOGRAPHIC MASK.

APPLICATION FILED OCT..2|, I918.

Patented Oct. 3, 1922.

M iZn.

Patented Oct. 3, 1922.

HENRY BAUMGARTELOF CHICAGO, ILLINOIS.

ADJUSTABLE PHOTOGRAPHIC MASK.

Application filed October 21, 1918. Serial No. 259,001.

To aZZ 107mm it may concern:

Be it known that I, HENRY BAUMGARTEL, a citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented a certain new and useful Improvement in Adjustable Photographic Masks, of which the following is a full, clear, concise, and exact description, reference being had to the accompanying drawings, forming a part of this specification. 1

The invention relates to photographic masks, ordinarily used in photography to rotect that portion of the sensitized paper beyond the picture itself from the light rays during the printing of the picture, this portion being left blank or subsequently exposed under another mask having suitable border designs which protects the picture but exposes that portion of the paper previously protected. p

The invention has among its various objects the production of a device of this character which may be quickly adjusted so that it is applicable for use in connection with negatives of various sizes, and which may also be arranged to accommodate more than one negative at a time, each of which will be separated from the others by a blank space produced between them by the mask. The invention results in the elimination of the necessity of providing a separate mask for each picture or set of pictures, thus materially reducing the time and expense necessarily consumed by the present method.

The invention has as a further object the provision ofa means whereby the proper positioning of the paper with respect to the negative is insured, and has as a further object the production of an arrangement of this character which will hold the negative in its proper position with relation to the glass of the printing machine. The invention has as a'further object the production of a device of this character, the cross section or dimension of which will be comparatively thin so that the same will not consume a great amount of space in the printing machine, which also has to receive the negative and the printing paper.

It is an added object of the invention to produce these and other advantages in a simple and expeditious manner, all of which will be explained in detail and more readily understood when read in conjunction with the accompanying drawings, in which Fig. 1 is a plan view of the invention; and

Fig. 2 is a section taken on line 22 of Fig. 1.

In the embodiment of the invention illustrated in the drawings, the same is shown as being composed of a frame generally designated 10 and the movable strips 11-11 and l212 these strips being movable with respect to the frame and with respect to each other. The frame 10 and the strips will be composed of any material, such as fibre, hard rubber, metal, celluloid, or other similar material which will prevent the penetration of light rays, and also be impervious to dampness and water, which insures the strips against buckling The frame 10 is of any suitable width, that portion between the innermost edges thereof providing the rectangular opening 13, the size of which. may be varied by manipulating the strips 11-11 and 12-12% which are substantially of the I same width as the frame 10, so that when they are moved to their farthest position outwardly they will expose the entire opening 13. The outer edge of the frame 10 is provided with a head 14 which adds to the rigidity of the frame and serves as a guide for the strips, the ends of which are slidably secured to the frame in any suitable manner.

The particular structure resorted to in this instance for adjustably securing the strips in position with relation to the frame consists of the spring clips 15 which ride upon the bead 14E, they being suitably secured to the opposite ends of the strips 11-1? and 1212"-. By arranging the strips so that they may be adjusted with relation to the frame and relatively to each other various sized openings may be produced between the inner edges of these strips, the strips themselves being of a width sufiicient to produce the desired margin upon the paper, although the dimension of these strips may be varied to suit various contingencies which may arise. It can readily be seen that all of the strips need not be manipulated each time the size of the opening is to be varied, as the strips such as 11 and 12 may be set so that they bear a fixed relation to each other, thus demanding only that the strips 11 and 12 be moved, as indicated in dotted. lines in Fig. 1.

To assist the user to quickly and accurately position these strips so that the opening between them will result in a certain prescribed area, the frame 10 is provided with indicia 171'T which are provided upon four sides of the frame and assist the user to quickly determine the dimension of the opening between the strips when same are moved relative to the frame. The strips such as 1111' are also provided with suitable markings 18. These aid the operator to position the sensitized paper so that it will square with the opening between the strips, and also serve to assist or guide the user to correspondingly arrange abutments upon the mask having the border, so as to cause both exposures to register with each other in double printing.

From the foregoing explanation of the structure of the invention it can readily be seen that the strips 11-11 and 12-12 may be moved relatively to each other and with respect to the frame, so as to either expose the entire opening 13 or partially close it, also that these strips may be positioned so that openings of various sizes will result between the strips and the frame.

Having thus described one embodiment of my invention, it is obvious that modifications may be resorted to without departing from the spirit of the appended claims.

What I claim is:

1. In a photographic mask the combination of a rectangular frame constructed to permit it to be arranged in a printing frame,

a plurality of independently movable flexible strips extending transversely across the opening of the first mentioned frame and having their opposite ends secured to the frame, spring elements movable with the strips for securing the strips to the frame and permitting the strips to be moved with relation to said frame, indicia, provided upon the first mentioned frame and arranged to cooperate with the strips to determine the dimension of the opening between said strips and indicia provided upon one of said strips for squaring the paper to be printed with the opening produced between said strips.

2. In a photographic mask the combination of a rectangular frame constructed to permit it to be arranged in a printing frame, a plurality of independently movable flexible strips extending transversely across the opening of the first mentioned frame and having their opposite ends secured to the frame, spring elements movable with the strips for securing the strips to the frame and permitting the strips to be moved with relation to said frame. indicia provided upon the first mentioned frame and arranged to cooperate with the strips to determine the dimension of the opening between said strips, indicia provided upon a pair of said strips which are parallel to each other said indicia providing a means for squaring the paper to be printed with the opening between said strips.

In witness whereof, I hereunto subscribe my name this 30th day of September, A. D

HENRY BAUMGARTEL.