US2441843A

US2441843A - Projection printing easel

Info

Publication number: US2441843A
Application number: US624858A
Authority: US
Inventors: Raiff Andrew; Sylvia S Robbins; Victor G Robbins; Isidore S Rosen
Original assignee: Individual
Current assignee: Individual
Priority date: 1945-10-26
Filing date: 1945-10-26
Publication date: 1948-05-18
Anticipated expiration: 1965-05-18

Description

May 18, 1948. RMFF Em 2,441,843

PROJECTION PRINTING EASEL Filed Oct. 26, 1945 I5 Sheets-Sheet 2 May 1a, 1948. 4 A. R AlFF ETAL 2,441,843

PROJECTION PRINTING EASEL Filed 001;. 26, 1945 3 Sheets-Sheet 3 7 Jann Patented May 18, 1948 raom'o'rroN ram'rmc. EASEL Andrew Raifl, Brooklyn, and Sylvia s. Robbins and Victor G. Robbins, New York, and Isidore S. Rosen, Brooklyn, N. Y.

Application October 2c, 1945, Serial No. 624,858

This invention relates to a novel construction of easel or frame for holding sensitized paper subject to projection printing thereon of enlargements from photographic negatives.

The invention has for an object to provide an improved easel or frame adapted to receive and position sensitized paper in exposed relation to photographic enlarger aparatus, whereby a light projected image from a negative mounted on said apparatus may be properly focused upon the paper to print thereon a desired enlargement of the negative subject.

6 Claims. (01. 88-24) The invention has for another object to provide an improved easel or frame for the purposes stated to which sheets of selected size of sensitized paper to be printed may be quickly, easily and successively mounted in and removed therefrom, whereby to produce 'a desired number of enlarged prints from a given negative subject.

A further object of the invention is to provide a novel unitary construction. of easel or frame which may be produced from sheet metal or other sheet material; said easel or frame being reversible, whereby to provide at both faces thereof selectively usable paper receiving and holding means, one-face of the easel or frame being formed to provide a paper receiving and holding means adapted to accommodate a maximum size of paper, while the opposite face of the easel or frame is subdivided to provide a plurality of paper receiving and holding means adapted to respectively accommodate various reduced or smaller selected sizes of paper; each paper receiving and holding means "being provided with a paper admission mouth opening outwardly at an end of the easel or frame, and the I easel or frame ends having novel offset visor or hood flanges exteriorly disposed to overhang said paper admission mouths, whereby to shield the same against entrance therethrough to extraneous light rays likely to interfere with the paper printing light projected image, and said visor or hood flanges, by reason of their offset relation to the admission mouths of the paper receiving and holding means, also providing finger access to said admission months for entering paper in or withdrawing paper from said receiving and holding means.

Another oblect of the invention is to provide a simple, compact and light-weight and yet strong and durable unitary easel or frame for the stated purposes, the same comprising a minimum num ber of parts formed and assembled in the manner hereinafter more particularly described.

An illustrative embodiment of the invention is shown in the accompanying drawings, in which:

Fig. 1 is an elevational plan view of one face of the novel easel or frame made according to this invention; Fig, 2 is an end elevational view, as viewed from the lower end of Fig. 1; Fig. 3 is a side elevational view; Fig. 4 is an elevational plan view of the opposite face of the easel or frame; Fig. 5 is a. transverse sectional view, taken on line 5-5 in Fig. 4; and Fig. 6 is a. longitudinal sectional view, taken on line 66 in Fig. 4.

Fig. 7 is an enlarged fragmentary longitudinal sectional view at one end of the easel or frame, showing a sheet of paper located in the paper receiving and holding means of maximum size, and access of fingers for manipulating the same within the space intermediate the visor or hood flange members at said end of the easel or frame;

Fig. 8 is an enlarged fragmentary perspective view' of a comer portion of the easel or frame; and Fig. 9 is a perspective view of a separable adapter element for'modifying the size of a paper receiving and holding means of the easel or to be subjected to projection printing say, for example, 11 x 14 inch paper. Longitudinal side marginal portions of said main plate 10 are doubled. or folded back thereon, whereby to provide lateral paper stops l2 and relatively narrow masking flanges [3 to overlie side marginal portions of said paper supporting area ll. Said masking flanges ii are disposed in spaced parallel plane relation to said paper supporting area ll,

- so as to form papen-receiving guides or runcomprising a bottom or foot piece ii, an upstandmg web section 16 and an outwardly projecting 3 visor or hood flange l1. The respective ends of each bottom or foot piece I! is spot-welded or otherwise secured to the respective corresponding end portions of said masking flanges l2, so as to be unitary with the same and thus with said main plate i0. Each bottom or foot piece I! is oifset by saidmasking flanges i2 from the ad- Jacent end marginal portions of said main plate It, whereby to cooperate with the latter so as to form end masking flanges spaced thereabove, and whereby to also provide an open mouth l8 (see Fig. 8) through which paper may be admitted to the paper supporting area II. The outwardly projecting visor or hood flanges l1 are spaced an appreciable distance above and so as to overhang said open mouths I8, whereby to shield the latter against inward entrance therethrough of extraneous light rays.

Cooperating with the oposite face of the main plate i is means for dividing said face into a plurality of variously smaller sizes of paper supporting areas; each such area being bounded at suitable points by paper masking and stop means. The means for so dividing said opposite face of the main plate ill comprises a dividing plate 20 formed from sheet metal or other suitable sheet material. Said dividing plate 20 is provided along its longitudinal sides with downwardly offset footing flanges 2| joined thereto by perpendicular wall sections adapted to provide lateral paper stops 22. Said footing flanges 2| are spot-welded or otherwise aiiixed to said main plate l0 so that the dividing plate is unitary with the latter. The main body of said dividing plate is thus disposed to overlie said opposite face of the main plate In in spaced parallel plane relation thereto. At one end thereof, the body of said dividing plate 20 is cut away to provide a comparatively large opening 23 to expose an underlying paper supporting area 24 of said main plate I! for projection printing of a comparatively large size of paper, e. g. 8 x inch paper. At the opposite end thereof, the body 01 the dividing plate is cut away to provide a plurality of further reduced openings 25 and 26 to respectively expose underlying paper supporting areas 21 and 28 of said main plate In for projection printing of further reduced sizes of paper, e. g. respectively for 5 x 7 inch paper and 3% x 5 inch paper.

To separate said several paper supporting areas 24, 21 and 28 one from another, and to bound the sam at suitable points with paper masking and stop means, said dividing plate is provided with a transverse section to extend between the paper supporting area 24 and the paper supporting areas 21 and 28. An interior portion of said section is depressed to provide a division boss 22 of suitable length, adapted to abut the main plate l0. Perpendicular side walls of said division boss 22 provide paper stops 20 which bound the respective inner ends of said paper supporting areas 24, 21 and 24. In like manner, said dividing plate is provided with a longitudinal section to extend between the p per supporting

areas

21 and 22. An interior portion of said longitudinal section is depressed to provide a division boss 2! of suitable length extending intermediate said transverse division boss 29 and an outlying end of the main plate l0. Said division boss 2i is adapted to abut the main plate l0. Perpendicular side walls of said division boss 2| provide paper stops 22 which bound inner sides of the respective paper supporting areas 21 and 28. Internal marginal portions of the openings 22, 25 and 28 provide mask- 4 hang and are spaced from the paper supporting areas 24, 21 and 28.

The respective outer marginal end portions of the dividing plate 20 are aligned with corresponding outer marginal end portions of the main plate l0, and the former are disposed in spaced parallel plane relation to the latter, thus providing, intermediate the same, open mouths 24 (see Fig. 8), through which paper may be admitted to the

paper supporting areas

24, 21 and 22, as the case may be.

Formed in connection with the respective outer ends of said dividing plate 20, preferably as integral parts thereof, are upstanding web sections II, from the upper margins of which extend outwardly projecting visor or hood flanges 2.. Said visor or hood flanges 26 are spaced an appreciable distance above and so as to overhang said open mouths 24, whereby to shield the latter against inward entrance therethrough of extraneous light rays. Said visor or hood flanges 28 are disposed parallel to and spaced apart from the opposite visor or hood flanges l1 previously described.

The marginal end portions of the main plate ID are provided in association with the mouth entrances leading to the paper supporting areas ll, 24, 21 and 28 with indented notches 21, preferably of a depth not exceeding the width of the adjacent masking flanges. Said notches 21 provide finger access to paper lodged within the easel or frame upon given paper supporting areas I I, 24, 21 and 28.

To complete the easel or vframe, and so as to provide level and uniform marginal support thereof, either side up, upon a table or bed of projection printing apparatus with which it is used, side bars 28 are provided to extend along longitudinal sides of the main plate Ill, said side bars being of a height equivalent to the spaced height 01' the visor or hood flanges |128 so as to be flush therewith. End portions of said side bars 22 are aligned with and between the adjacent ends of the visor or hood flanges l1-26, whereby to provide cooperative perpendicular visor or hood flange portions 29, operative to further shield the mouths l8 and 24 against inward entrance therethrough of extraneous light rays. Said side bars 28 may be amxed to the main and dividing plates l0 and 20 in any suitable manner so as to be unitary therewith. In a preferable form thereof, however, said side bars 28 are of channel shape in cross section, and end portions of their peripheral flanges are severed from main portions thereof to provide anchoring ears 4. inwardly projecting from the visor or hood flange portions 29 so as to lap end portions of the visor or hood flanges "-28, to which said anchoring ears 40 are spot welded or otherwise suitable secured.

The paper supporting areas ll, 24, 21 and 22 may be painted or otherwise coated with material of white or other selected light color to provide a suitable ground upon which to test focus a light projecting image to be printed, preparatory to the printing operation.

In the use of the easel or frame of this invention, if it is desired to obtain an enlarged print of maximum size, e. g. 11 x 14 inches, the easel or frame is laid upon the table or bed of the pro- Jection printing apparatus with the paper supporting area ll of the main plate l0 upward (see Fig. 1). The paper is then inserted through either mouth I. to move through the guides or runways ing flanges 22 of suitable width, and which over- I4, whereby to overlie said supporting area I i in stopped and masked operative positionthereon. whereupon the printing op tion is proceeded with. Ifit is desired to obtain an enlarged print or any or the smaller sizes, the easel or frame is reversed. or turned over so as to lay upon the table or bed oi the projection printing apparatus of the main plate ll upward (see Fig. 4) whereupon a selected smaller size of paper is inserted through a mouth It to lie upon an appropriate supporting area in stopped and marginally masked position, whereaiter the printing operation may be proceeded with. a v

If prints smaller than the smallest size normally provided for. or or size intermediate the sizes normally provided for, by the paper supporting areas, are desired, said supporting areas may be suitably reduced to desired size by application thereto one or more separable reducer plates. An illustrative form or reducer plate is shown in Fig. 9, and comprises a flat body 4! of suitable dimensions bordered on one side by an oil'set masking flange 42 Joined thereto by a perpendicular wall section adapted to provide a paper stop ll. It will be obvious that such form of reducer plate may be deposited upon a paper supporting area to be reduced therr oy, and the rear margin 44 of its body ll inserter beneath a, masking flange and against a paper stop at a side 01' said supporting area, whereby to hold the retainer plate in place and oppose its masking flange l2 and p p r stop 43 to a masking flange and paper stop of an opposite side of said supporting area. being thus disposed to receive and position therebetween the p per of reduced size.

It will be observed, by inspection of Fig. '7 more particularly, that the novel arrangement of visor or hood flanges surrounding the entrance mouths leading to the paper supporting areas of the opposite faces of the main plate in, not only provide light barriers to shield said mouths against entrance therethrough oi extraneous light rays, but also provide adequate finger receiving space whereby finger access to margins of paper deposited in the easel or frame and accessible through the notches 31 of the main plate ends is facilitated when the operator desires to enter or withdraw the paper.

From the above description it will be appreciated that the instant invention provides a novel unitary construction of easel or frame, which may be conveniently and efflciently employed in the printing oi photographic enlargements in a variety of selected sizes.

Having now described our invention, we claim:

1. A reversible projection printing easel comprising a flat rectangular main plate having side marginal portions thereof in-turned over one lace thereof to provide lateral masking flanges and paper stop means, visor members each comprising an inwardly projecting foot-piece, an upstanding web and an exteriorly projecting visor flange, said visor members being respectively afllxed by their footpieces to and between corresponding end portions of said intumed lateral masking flanges to overlie marginal end portions of said main plate in spaced relation thereto, whereby to provide intermediate entrance mouths adapted to pass paper onto said face of said main plate, said exteriorly projecting visor flanges being thereby respectively disposed in offset overhanging relation to said respective entrance mouths sons to shield the latter against entrance therethrough of extraneous light rays, a dividing plate having inwardly offset foot flanges along its sides with the paper supporting areas 24, 21 and II and secured to said main plate, said dividing plate having a plurality oi openings or various dimensions to overlie variously sized paper sup-' porting areas of said opposite face of the main plate, inwardly depressed division bosses intermediate said openings of the dividing plate adapted to abut said main body, marginal portions of said openings or the dividing plate being adapted to provide masking flanges, corresponding ends of said main and dividing-plates being spaced apart to provide entrance mouths leading to the last mentioned paper supporting areas,

and additional visor members at the respective ends of said dividing plate each formed by an upstanding web and an exteriorly projecting visor flange, the visor flanges of said additional visor members being disposed'in outwardly oflset overhanging relation to said last mentioned entrance mouths so as to shield the latter against entrance therethrough of extraneous light rays.

2. A reversible projection printing easel as deflned in claim 1, wherein said main plate is provided in its ends with indented notches through which marginal portions of paper overlying the same are finger accessible, opposed visor flanges being substantially spaced apart, whereby to facilitate access of fingers to paper exposed by said notches to the grasp thereof.

3. A reversible projection printing easel as deflned in claim 1, including side bars extending along the sides of said main plate at right angles thereto, said side bars being or a height substantially equivalent to the distance of separation of opposed visor flanges so as to be substantially flush therewith, and end portions of said side bars being disposed to close the ends of the space intermediate said visor flanges.

4. A reversible projection printing easel as defined in claim 1, wherein said main plate is provided in its ends with indented notches through which marginal portions of paper overlying the same are finger accessible, opposed visor flanges being substantially spaced apart. whereby to facilitate access of fingers 'to paper exposed by said notches to the grasp thereof, side bars extending along the sides of said main plate at right angles thereto, said side bars being of a height substantially equivalent to the distance of separation of opposed visor flanges so as to be substantially flush therewith, and end portions of said side bars being disposed to close the ends of the space intermediate said visor flanges.

5. A reversible projecting printing easel all parts of which are permanently. united in fixed immovable relation one .to another to provide a unitary structure comprising a main plate provided on one face thereof with paper. receiving and holding means adapted to accommodate a maximum size of paper and on the opposite face thereof with a plurality of selectively usable paper receiving and holding means of various dimensions adapted to accommodate paper of correspondingly reduced sizes, all said paper receiving and holding means having permanently open entrance mouths respectively opening from ends of said main plate, and visor means operative to shield said open entrance mouths against entrance therethrough of extraneous light rays, said visor means comprising web portions disposed substantially in the vertical plane of said open entrance mouths to extend therefrom relative to opposite sides of said main plate, exteriorly projecting visor flanges extending outwardly from said web portions in planes parallel to that 7 of said main plate, whereby to be disposed in oilaet overhanging and shielding relation to said open entrance mouths, and hood flange P rtions interconnecting corresponding ends of said visor flanges to close the ends of the space intermediate the latter.

6. A reversible projection printing easel all arts or which are permanently united in iixed immovable relation one to another to provide a unitary structure comprising a main plate provided on one face thereof with paper receiving and holding means adapted to accommodate a maximum size of paper and on the opposite face thereo! with a plurality of selectively usable paper receiving and holding means of various dimensions adapted to accommodate paper of correspondingly reduced sizes, all said paper receiving and holding means having permanently open entrance mouths respectively opening from ends of said main plate, and visor means operative to shield said open entrance mouths against entrance therethrough of extraneous light rays, said visor means comprising web portions disposed substantially in the vertical plane of said open entrance mouths to extend therefrom relative to opposite sides or said main plate, exteriorly projecting visor flanges extending outwardly 8 from said web portions in planes parallel to that oi said main plate, whereby to be disposed in onset overhanging and shielding relation to said open entrance mouths, side bars extending along the sides of said main plate at right angles thereto, said side bars being of a height substantially equivalent to the distance oi separation oi opposed visor flanges so as to be substantially flush therewith, and end portions of said side bars being disposed to closethe ends of the space intermediate said visor flanges.

ANDREW RAIFI". SYLVIA B. ROBBINS. VICTOR G. ROBBINS. ISIDORE B. ROSEN.

REFERENCES CITED The following references are oi record in the tile oi' this patent:

UNITED STATES PATENTS Number Name Date 1,197,780 Van Doran Sept. 12, 1916 1,816,906 Kroedel Feb. 8, 1927 2,187,381 Lane Jan. 16, 1940 2,235,483 Porcelli et a1 Mar. 18, 1941 2,348,999 Peterson May 16, 1944