US1805202A - Photo composing screen and plate holder - Google Patents

Description

May 12, 1931. BOEDICKER 1,805,202

PHOTO COMPOSING SCREEN AND PLATE HOLDER Filed April 18. V 1928 2 Sheets-Sheet l INVENTOR I Hanan/6.50m

i/QL ATTORNEY y 1931. H. c. BOEDICKER 1,805,202

PHOTO COHPOSING SCREEN AND PLATE HOLDER Filed April 18, 1928 2 Sheets-Sheet 2 JXLJDZM ATTORNEY INVENTOR Patented May 12, 1931 PATENT OFFICE v HERMAN C. BOEDICKER, OF NEW YORK, N. Y.

PHOTO COMPOSING SCREEN AND PLATE HOLDER Application filed April 18,

The object of the present invention is to provide a sensitized plate holder for a photo composing machine of novel construction in that it comprises a frame having a vertically adjustable screen holder therein below an image opening which may be closed by a curtain or the like. Below the screen holder is a horizontally removable sensitized plate slide, one end wall of the same projecting through an aperture in the casing and provided with a handle for manipulation, the slide being provided with adjustable sensitized plate supportingbars.

The invention will be described with reference to the accompanying drawings in which Figure 1 is a plan elevation of a photo composing machine showing theimproved sensitized plate holder in position Figure 2 is a plan view, partly in section,

showing an embodiment of the invention;

Figure 3 is a front end elevation in section along the line 3-3, Figure 2;

Figure 4 is a side elevation of the holder,

partly in section, along the line 4-4, Figure 2, and V I I Figure 5 is a perspective fragmentary view of the screen holder lifting'means.

Referring to the drawings, Figure 1 illustrates the casing A of my improved plate holder mounted upon the adjustable supporting table 1 of a photo composing machine of the type subject of my application Serial No. 192,143 filed May 17, 1927. In the operation of the photo composing machine, an image carried on a plate supported by the projector Bis projected through the lens G into a sensitized plate held within the casing A. The casing A is formed with side walls and a bottom wall 1, the top wall being apertured for the passage of the image. In order to close the casing aperture, a suitable curtain may be provided as for example the curtain 2, the latter comprising a plurality of slats mounted on a canvas or other flexible sheet, each slat at opposite sides thereof being formed with apertures 3 to receive the teeth of guiding pinions 4, 4 the pinions being carried by suitable shafts such as the shaft 5, Figure 2.

5c The curtain may be provided with an op- 1928. Serial No. 271,014.

crating handle 6 by means of which the cur- I tain may be drawn forwardly to close the image opening or given a reverse movement as desired.

At opposite points within the casing are placed the U-shaped bars 7, each bar having secured thereto spaced vertical slides 8 adapted to move vertically within suitable slideways formed in cross plates of the casing, of which one plate 9 is shown in section, Figure 2, and in elevation, Figure 3. Plate 9 is a second casing plate 10 which at the two points opposite vertical slides 8 is formed with vertical guide apertures 11 for studs 12, which studs are carried by the slides. Each stud enters a cam aperture 13" formed in a cam bar 13. Each cam bar is connected by a link 14 with a lever arm 15 fixed to a rock shaft 16, the rock shaft having an operating handle 17 exterior to the casing. Operating handle 17 carries a finger 18 which may be engaged by an adjusting screw 19 having a knurled thumb head 20 and a lock nut 21. Adjacent the handle is a scale indicated at 22. When the adjusting screw is turned downwardly it acts upon finger 18 to raise the operating handle and thus simultaneously move the cam bars to elevate the screen-a distance which is denoted by the scale, as will be understood without further explanation. By lifting the handle, the screen may be quickly raised to its maximum degree so as to enable an adequate space intermediate the screen holder and members lying below the same.

Each U-shaped bar 7 is formed with a plu rality of holes 7 and the bars support opposed screen holding frame members 23, having slide pins 24 at their ends forrengagement in the holes 7 so that the bars may be held in the various positions to which they are adjusted for different sizes of screens, the position of the screen being indicated by the dotted lines 25. Each frame member 23 is provided with a plurality of supporting lugs 26 for the screen and above each lug is a spring latching member 27 to engage the uppersurface of the screen.

Below the screen holder within the casing are parallel'shouldered supporting bars (one being shown in Figure 3 at 28). to receive a sensitized plate slide 29, the latter projecting through an-aperture in the front wall of the In the operation of the device, focus may be determined by placing in the sensitized.

plate slide a glass plate having a white coat ingon it, and thus capable of receiving and enabling definitionof the image. The'focus and sizeofrthezprojected image may be then fixed by appropriate adjustments of thetable land/or the lens 0, the latter being carried by vertical adjusting rods D, adjustable as described in my aforesaid application. The 7 said focusing glassis then removed'by pulling handlez30 outwardly and-carrying the slide forward. Screen separationhandle 17 having been swungiupwardly, the focusing glass may be removed from the plate slide by an up- Ward andloutward movement without contact with the screen holder. The sensitized plate' may then beplaced in position and the sliderthen pushed back into operative position. ifWhen the exposing of the sensitized plate is completechplate slide 29'may be moved outwardly, like the movement of a drawer in the desk, and the exposed plate may be'lifted out. It is unnecessary for the operator to withdraw the entire slide'but merely move the same outwardly far enough to enable the raising and edgewise movement of the sensitized plate, carrying it out of the casing. 'The plate may then be taken to the darkroom andldeveloped as customary.

For the reproductionofline drawings and otherimages not requiring a screen, the screenholder may, of course, be eliminated. "In such form the device would merely include the'casing with its image aperture and slide ways with the slide and its cooperative elements.

By casing I do not restrict myself to a member with continuous walls since the casing need not be of itself light-proof, and Where themember A is of skeleton construction, that is to say is not formed with continuous walls, it maybe covered with velvet or other -light-proofcloth should shielding of a sensitized plate in the casing be necessary at any time. I

Having described my invention what I claim and desire to secure by Letters Patent is as follows t' t 1. In screen and plate holders for photographiccomposing machines, a casing having an image aperture, and an aperture for rerectangular casing having an image aperture anda secondapertureat right angles there- 'to, slide ways contiguous to said second aperture, a rectangular plate slide in said-slide ways and adapted to pass through said second aperture, adjustable holdingmeans carried by said slide for supporting sensitized plates of various sizes,a screen holder car ried bythe casing above the plate slide and means for adjusting-the screen holdertoward and from the plate slide. p 3. In screen and'plate holders for photographic composing machines, acasing having an image aperture, and an aperture for receiving a ,plate holding slide, a screen holder Within the casing and in register with said image aperture, means-operable from a point exterior of the casing to advanceand retract-the screen holder, a plate holding slidewithin the casing and. adapted to =movement through said second aperture inawall of the casing, and plate holding members carried by the slide and movable towardand from eachxother. V V 4. In screen and plate holders for photographic composing machines, .a casing havmg. anrimage aperture andat right angles j therewith a second aperture, means within thecas'ingand contiguous to saidsecondaperture to afford'a slide way, adrawer-like plate slide within the casing and supported bysaid slide way and adjustable plate holding means carried by said slide. I

5. In screen and plate holders for photographic composingmachines, a box-like casing having one major wall formed with an image aperture and having a wall at right angles therewith formed with "a second aperture, means within the casing and contiguous :to saidzsecond aperture to afford a slide wayyadrawer-like plate slide within the-casing and supported by said slide way and plate: holding means carriedby said slide and movable towardand from each other. In testimony whereof, I have signed my name to this specification.

HER-MAN .C. BOEDIOKER.

ceiving aplate holding slide, a screen holder

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