US884804A - Photograph-printing frame. - Google Patents

Description

No. 884,804. PA-TENTED'APR. 1 4, 1908.'

R.-DU PERRBAX.

PHOTOGRAPH PRINTING FRAME.

APPLICATION FILED MAY 23,1901.

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ROBERT DU PERREX, OF ST. LOUIS, MISSOURI.

PHOTOGRAPH-PRINTING FRAME.

Specification of Letters Patent.

Application filed May 23, 1907.

Patented April 14, 1908.

Serial No. 375,317.

T o all whom it may concern:

Be it known that I, ROBERT DU Pnnnnx, a citizen of the United States of America, residing at St. Louis, in the State of Missouri, have invented new and useful Improvements in Photograph-Printing Frames, of which the :following is a specification.

This .invention relates to photographic printing frames, its primary object being to improve the construction of the backs of such iframes and to provide a novel and simple construction of means for locking the back in closed position and automatically swinging the same to open position upon the release of the locking means, thereby permitting the paper and negative to be quickly and conveniently inserted within or removed from the frame.

A further object of the invention is to provide a sectional back having a sectional spring-pressed follower adapted to engage and firmly retain the printing paper in engagement with the negative and permit the back to be closed without liability of breaking the negative or glass of the frame.

IVith the above and other objects in view, the invention consists of the novel construction, combination and arrangement of parts hereinafter fully described and claimed, reference being had to the accompanying; drawings, in which i Figure 1 is a rear perspective view of a printing frame constructed in accordance with my invention, the back being shown in opened position. Fig. 2 is a transverse section through the frame. Fig. 3 is a vertical longitudinal section thereof. Fig. 4 is a detail plan view illustrating the construction of the 'follower springs. Fig. 5 is a detail section, illustrating the construction of one of the guiding connections between the frame back and follower. A

Referring now more particularly to the drawing, 1 designates the frame provided in its top and bottom portions with the usual finger recesses 2 5 3, a negative or supporting glass arranged within the frame; and 4, the back of the frame. The back 4l consists of sections 5 and 6, the section 6 being smaller than the section 5 and designed to be opened independently of the latter' when it is desired to examine the printing` paper. The said sections 5 and 6 are hinged at one side of the frame, each being provided to this end with hinge-leaves or plates 7 apertured to engage a rod 8 extending longitudinally at one side of the frame and suitably fixed at its ends to the top and bottom bars of the frame, as indicated at 9, said rod being supported and stayed at a central point by a bracket 10 secured to the side piece and through which the rod extends. Pairs of coiled springs 11 surround the rod 8 and have their free ends suitably connected to the side of the frame and their opposite or inner ends connected and bent to form a spring arm 12 seated in a recess 13 in the hinged end of the adjacent back section, whereby the springs are caused to exert pressure on the back sections to automatically swing the same open when said sections are released. Each air of springs is preferably formed of a single iece of spring wire, the wire being folded between the inner ends of the spring members to produce the arm l2, while the ends of the rod 8 are preferably let into recesses in the top and bottom portions of the frame and secured therein by pins or other suitable fastenings.

The opposite side of the frame is provided with latch devices to engage the free side edges of the back sections 5 and 6, each latch being of the construction clearly shown in Fig. 2, and comprising an angle or L-shaped plate 14 which is hingedly secured in ap hed position, as at 15', to present its vertica portion in a recess 15a formed in said side of the frame and its horizontal portion in a recess 16 formed in the upper or rear edge of said side, a leaf spring 17 being disposed in the recess 16 and operating to press the horizontal arm of the latch upward and maintain the vertical arm thereof in normal or upright position for locking engagement with a locking pin 1S on the cooperating back section. The lockingl pin is preferably provided with a beveled end to snap into an opening 19 formed in the vertical arm of the latch, by which the latch section is locked in closed position. Upon the depression of the horizontal arms of the 'i latches the back sections will be released and will be automatically thrown open by the springs 11, as will be readily understood. When the back sections are swung closed7 the beveled ends of the locking pins will engage and tilt or depress the latches against the resistance of the springs 17 and will snap into the openings 14, whereupon the s rings 17 will restore the latches to norma position and hold the back sections closed.

A yielding follower is provided for use in conjunction with the back sections 5 and 6, and comprises sections 20 and 21 respectively carried by and coinciding in size with the said back sections. Each follower is bodily movable or slidable upon its back section, and to this end has connected therewith pins or screws 22 free to slide in openings 23 in the back section, the head of the pin or screw being adapted to move within a recess 24 communicating with the opening 23, thus allowing the follower to have sufficient yielding action to -vary its pressure and compensate for different thicknesses of printing paper and to press the same firmly against the glass or negative 3. Each follower is pressed outward from its back section by a pair of looped pressure springs 26, said springs being preferably formed of spring wire and of V- shape. The free ends of the arms of the springs, which are in alinement with each other, are bent to fit firmly within holding recesses in the follower, while the return portions 27 of the spring are curved outwardly toward the coacting back section and bear against the same, and thereby tend by their pressure to force the follower outward to the imit afforded by the guide pins 22. It will be observed that the bearing portions 27 of the spring engage the follower sections at points adjacent the guide pins 22, and that such springs are disposed in opposing relation, so as to exert pressure at equidistant points, whereby the followers are adapted to move in true paths and prevented from tilting and binding upon the guide pins. It will thus be understood that when the sections are closed the followers will exert a desired pressure on the paper, and that when either back section is opened the follower member connected thereto will move outwardly therewith. As the followers are free to yield when the back sections are closed it will be seen that all liability of breakage of the glass or negative from undue pressure will be avoided. A packing or joint closure strip 28 is mounted for sliding movement in a transverse slot in the free edge of one of the follower sections and is adapted to be pressed outward into engagement with the free edge of the other follower section by a curved plate pressure spring 29 disposed in said slot, thus rendering the back of the frame air and moisture tight when closed. The means for slidably mounting the strip preferably comprises pins 30 extending across the slot and passing through elongated openings 31 in the strip. The manifold advantages of the features of construction described will be obvious and need not be enumerated.

Having thus described the invention, what is claimed as new, is :F

1. A photographic printing frame comprising a frame proper, a sectional back hinged thereto, means for locking the back in closed position, automatic means for opening the back, follower-sections, guide pins slidably connecting said follower-sections with the back-sections, and looped springs of wire terminally Hated upon each back-section, said springs having their return portions free and bent outward to bear against the associated follower-section adjacent the pins, whereby said springs engage said follower-section in proximity to its guided points to yieldingly force the same away from said back section.

2. A photographic printing frame comprising a frame proper provided in one of its sides with recesses, each having a vertical portion on the inner face and a horizontal portion across the rear face of the side, a sectional back hinged to the opposite side of the frame, spring means to force the back sections open, beveled locking pins upon the free edges of the back sections, latches upon the frame fitted in said recesses, each latch having a vertical and a horizontal portion occupying the corresponding portions of its recess, the vertical portion being pivoted and provided with an opening to receive the coacting locking pin, and a spring in the horizontal portion of each recess to hold the horizontal portions of the latches pressed outward and to maintain the latches normally in locking position.

3. A photographic printing frame comprising a frame pro er, back sections hinged to .one side of the rame, locking pins upon the swinging edges of the back sections, L- shaped latches upon the opposite side'of the frame, each having one of its arms pivoted to the frame and adapted to receive and engage the coacting locking pin, and a spring acting on the other arm to hold the latch normally in locking position.

4. A photographic printing frame comprising a frame pro er, a sectional back hinged thereto, means or locking the back in closed position, automatic means for opening the back, yieldingly mounted follower sections on the back, and a spring-pressed closure strip upon one section adapted to close the space between the same and the other section.

In testimony whereof, l a'HiX my signature in presence of two witnesses.

ROBERT DU PERREX.

Vlitnesses MARTIN HEGGEMEIER, HERMAN T. Kooi-L

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