US571855A - And frank moniot - Google Patents

Description

UNITED STATES PATENT O FICE.

MATllIAS FLAMMANG, OF NElVARK, NE XV JERSEY, AND FRANK MONIOT, OF NEW YORK, N. Y.

PHOTOGRAPHIC-PLATE HOLDER SPECIFICATION formingpart of Letters latent No. 571,855, dated November 24, 1896.

Application filed January 28,1896. Serial No. 577,164. (No model.)

; screen-plate holder which is simple and durable in Construction and arranged to enable the operator to accurately adjust the screen relatively to the sensitive plate according to the nature of the objectto be photographed.

The invention consists of certain parts and details and combinations of the same, as will be fully described hereinafter and then pointed out in the claims.

Reference is to be had to the accompanying f drawings, forminga part of this specification,

in which similar characters of reference indicate corresponding parts in all the figures.

Figure l is a side elevation of the plateholder with the cover open. Fig. 2 is an end elevation of the same. Fig. 3 is a cross-section of the same on the line 3 3 of Fig. 1, and Fig. 4 is an inverted sectional plan view of part of the plate-holder on the line 4 of Fig. 1. The improved photographic screen plate holder is provided with the usual box A, having a hinged cover B and a slide 0 forexposing the sensitive plate, as is well known. In the sides of the box A is fitted to slide an arm E, carrying projections E for one edge of the sensitive plate to rest upon, the other edge resting on similar projections E held on an arm E?.,..engngingwith its ends'notches formed in the sides of the box A. By this arrangement the two arms E E can be moved nearer to or fartherfi'om each other to accommodate any-sized sensitive plate F, itbeing understood that the film of the plate is at the front,

and the back of the plate is engaged by the usual spring G, secured to the inner face of the cover 1;.

Directly in front of the film-face of the scn sitive plate F are arranged the sprin -holders I I for carrying the screen 11, mi holders being arranged on the free ends of the arms of the lazy tongs J J, fulcrumed on the sides of a frame K, fitted to slidelaterallyin the box A, so as to bring the screen H nearer to or farther from the sensitive plate F, according to the nature of theobject to be photographed.

()n'e arm of the lazy-tongs J engages a rigid pivot on the side of the frame K, while the other arm has its pivot L adjustable in a guideway N, formed on that side of the frame K, said pivot being adapted to be locked in place by a suitable clamping screw or cam to hold the lazy-tongs J in place after the same have been once adjusted to the required size of screen. The other lazy-tongs J is similarly arranged, that is, one arm has a fixed pivot and the other arm has its pivot L movable in a guideway N, secured to the other side of the frame K.

Now in order to impart lateral movement to the frame K we provide each side thereof with a pair of plates 0 0', each plate being formed with an inclined slot 0, engaged by a pin "P, projecting through a suitable slot in the side of the box A, and the pair of pins for the plates 0 are secured at their outer ends on slides Q, fitted to move in suitable guideways R, arranged on the outer side of the box A.

(fiec Fig. 2.) The pins? for the other setof plates 0 are similarly arranged? and secured on a slide Q, fitted to move insuitable bearings R, arranged on the sideof the box A. The slides Q Q are formed at one end with a suitable handle Q for enabling the operator to readily manipulate said slides; that is, to shift the same forward or backward and cause the pins P to move lat-orally with the plates 0 O, and consequently move the frame K-inth'e same direction to bring the screen II nearer to or farther from the sensitive plate F.

Each of the slides Q is provided with a line Q, (see Fig. 2,) adapted to indicate on a graduation S, representing one thirty-second of an inch, or a like subdivision of a unit measurement, that is, the distance between two graduation-marks corresponds to one thirty-second of an inch space between the screen Hand the sensitive plate F.

i' Now it will be soon that by tho arrangem'ont described the operator by manipulating the slides Q can readily adjust the screen H so as to bring it to the desired distance from the film of the sensitive plate F, said regulation being accomplished from the outside of the holder after the plates F and H are in place and the exposure is to be made.-

It will further be seen that by the arrangement described the lazy-tongs can be readily adjusted to accommodate any size of screen, and the latter is freelysuspended Withinthe box and without danger of its coming in contact with the sensitive plate or any part of the box.

Having thus fully described our invention,

we claim as new and desire to secure byLetters Patent 1. A holder for photographic-screen plates and the like, provided with oppositely-arranged lazy-tongs, movable toward and from each other, and carrying plate-holding devices, substantially as described.

:2. A holder-for photographic-screen platesand the like, provided with oppositely-arranged l-azy-tongs adapted to move toward and from each other and carrying plate-holding devices at their inner ends, substantially as described.

3. A holder for photographic-screen plates and the like, provided with lazy-tongs pivotally connected atone end to the frame of the holder, and slidably connected thereto at the other end, and plate-holding devices at the free ends of the lazy-tongs, described.

4:. A photographic screen plate holder,

substantially as comprising the main frame adapted to carry a negative or auxiliary frame ad ustable toward and from the negative and lazy-tongs secured to said auxiliary frame and carrying holders for a sereen plate, substantially as described. V

5. A photographic screen plate holder, provided with a frame held laterally adj ustable, means for adjusting said frame, lazy.-

tongs adj ustably held on said frame, and .hold- 'ers carried by said lazy-tongs and adapted to carry the screen, substantially as shown and described. 4

- 6. A photographic screen plaft ';e holder,

comp-rising'aamain frame adaptedfid receive agnee'ative auxiliary frame movable toward and from said, negative and provided with inclined slots, pins mounted to slide in the main frame and engaging the slots of the auxiliary frame, and lazy-tongs secured to said auxiliary frame. and provided with holders for a screen-plate,substantially as described. 7. A holder for photographic-screen plates and the like, providedwith a holder for the negative, a screen-plate holder movable toward and from said negative-holder, andaet-uating devicesfor shifting saidscreen-plate holder, said actuating devices extending through the frame to' the outside thereof, substantially as described.

MATHIAS' FLAMMANG'- FRANK .MONLQT, Witnesses JNo.. BITTER, THEO.. G. HosTER.

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