US989502A - Photographic-printing apparatus. - Google Patents

Description

D. W. GRAY,

PHOTOGRAPHIG PRINTING APPARATUS. APPLIOAUON FILED JUNE 2, 1910,

989,502. i Patented Apr.-11, 1911.

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D. W. GRAY.

PHOTOGRAPHIG PRINTING .APPRATUS. APPLICATION FILED JUNE z, 1910.

989,502. l Patented Afr. L1'1, 1911*.

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' ATTORNEYS NETE@ STATES PATENT FFQF..

D WEBB GRAY, 0F LITTLE FALLS, NEW YORK, ASSIGNOR. 0F ONE-HALF TO JOHN D. LANDES, OE DEXTER, MISSOURI.

PHOTOGRAPIC-PRINTING APPARATUS.

Specification of Letters Patent.

Patented Apr. 11, 1911.

Application led June 2, 1910. Serial No. 564,626.

To all whom it may concern:

Be it known that l, D WEBB GRAY, a citizen of the United States, and a resident of Little Falls, in the county of Herkimer and State of New York, have invented an Improved Photographic-Printing Apparatus, of which the following is a specification.

My invention is a photo-printing apparatus adapted for use either with natural or artificial light, and for adjustment at different inclinations, in order to facilitate admission of light from either source.

A special feature of the invention is the provision of a printing-frame proper and a ruby-glass holder, with means for opera.- tively connecting them in such manner that, when one closes the opening through which light is received, the other is raised and uncovers the same. Y

The invention further includes means for supporting the printing frame in position to facilitate the insertion and removal of negative and positive when the ruby-glass holder is closed. Y

The details of construction, arrangement, and combination of parts embodying the invention are as hereinafter described, and illustrated in the accompanying drawings, in which- Figure 1 is a central vertical section of the apparatus when the main frame is adjusted in a vertical position, the printing frame proper being shown closed and the ruby-glass holder elevated. Fig. 2 is an elevation of the printing frame proper in the closed position, together with the portion of the main frame with which it is directly connected. Fig. 3 is a central vertical section showing the main frame set at an inclination instead `of being vertical as in Fig. l, and the printing frame being raised while the ruby-glass holder is closed. Fig. 4 is an enlarged perspective of the printing frame proper with a portion of its sectional back raised. Fig. 5 is an elevation of the lower portion of the main frame and base frame with the pivoted support in operative position as in Fig. 3. Fig. 6 is a section on line 6 6 of Fig. 3, illustrating the means for looking the printing frame in a raised position.

A indicates a box-like hood which is'open at its rear end, and closed at the front end, save an opening in the lowerportion in which my attachment is arranged. The front of the hood may be said to constitute a frame, having parallel side flanges 1, as shown in Figs. 1, 2 and 3. The printing attachment comprises a rectangular frame 2, a printing frame proper 3, and a rubyglass holder a. The printing frame proper 3 is hinged to the front side of the frame 2, as indicated at 5 ruby-glass holder l is hinged, at 6, to the rear side of the supplemental frame 2.

The hinged printing frame 3 and the ruby-glass holder 4 are operatively connected by means of a. lever 8 and links or bars 9 which are pivoted to the opposite ends of the lever. The latter is pivoted near the middle of its length on a rigid arm 10 that projects forward and upward from the frame 2. All these parts, to wit, the printing frame proper, the ruby-glass holder, the lever, and connected devices, are all attachments of the frame 2, and the latter is held detachably between the flanges 1 of the hood frame by means of screws ll-see Fig. 2.

n Fig. 1, w indicates a glass plate which may be the negative, and y indicates a film or printing paper interposed between the negative w and the'cushioned surface of the sectional back 7 usually employed in printing frames. As shown in Fig. 2, a pivoted latch 12 is employed to hold the sectional back tightly in a closed position, for printing; and at 12a, I provide a pivoted button which may be used to lock the printing frame 3 in the closed position. It will now be understood that, if light be admitted to the hood A, either from a natural source or from an artificial incandescent light, indicated at e, and the printing frame be in the lowered or vertical position indicated in Fig. 1, printing will be eected, since the light rays will pass through the negative and into contact with the sensitive film y lying thereon. When due time for printing has elapsed, the operator seizes the knob 13, attached to the hinged printing frame 3, and raises the latter to a horizontal position, by which operation, through the me- Figs. 1 and Q-and the dium of the ,lever and connecting bars 9, the ruby-glass holder is brought down to the vertical position and closes the rear side of the opening in the trame 2, as indicated in Fig. twill thus be seen that the opening of the. printing frame closes the ruby-glass holder, and, contrariwise, the opening of the ruby-glass holder is accompanied b v the closing of the printing trame, in the opening` through the main or hood trame.

As indicated in Figs. 2 and l, the lever 8 and its connections are at one side of the printing frame proper or between it and the adjacent side of the detachable supplemental frame 2. l provide for locking the printing `trame in the raised position, and in this I utilize the lever attaclnnent. Thus the lever is provided at 14 with a small hole and the side of the printing frame 3 isprovided at 15 with a lateral pin adapted to enter such hole-see especially Fig. 6. The lever is made of thin brass, or other resilient metal, and, when the printing-frame is raised, the lever slides over the pin until the latter enters the hole 14 formed therein, and thus locks the printing-trame in the raised position. The operation is indicated by full and dotted linesFig. G. rPhe printing' trame is thus supported practically horizontally, so that negatives and printing paper, or other printing medium, may be easily laid therein or removed therefrom. When ready :tor printing, the operator releases the lock formed by the hole 14 and pin 15, by means of a pivoted lever 1G and a sliding` bar 1T which are arranged on the outer side of the printing frame 3. The lever is pivoted centrally and the bar 17 is provided with a slot that receives a guide screw 18 and it is also provided with an upturned end 19 constituting `a thumbpieee-see especially Fig. et. Thus, when the operator presses the thumbpiece 19 toward the knob 13 of the printingframe 8, the lever 16 is turned on its pivot and its inner end presses against the lever 8, so that it is forced oii1 the pin, as indicated by dot-ted lines in Fig. 6, which leaves the printing-frame free to descend to the vertical position, thatis to say, to the position it must occupy :t'or printing.

It will be understood that, in practice the entire apparatus is used in a darli-room, or in any room from which white light is excluded, the hood A being in such case directed to an exterior source of light either natural or artificial. In some cases, it is desirable to work the apparatus at an inclination, or rather that the hood A should be directed upward to a certain degree in order to receive the light to the best advantage; and, for this purpose, the base-piece B, to which the main hood frame is secured by a screw 20, is hinged to a rectangular base trame C-see especially Fig. 1. yIhis adapts the entire printing apparatus proper to be turned up on the hinge 21 to the position indicated in Fig. and, for supporting it in such position, provide a bar which is pivoted to the base-piece B and provided n-ear its outer end with a notch that, when the apparatus is set at an inclination as in Fig. 3, enters a notch or recess 23 provided in the base trame C and is secured therein by means ot' a pivoted button 2stsee also Fig.

then the apparatus is to be used in the vertical position indicated in Fig. 1, the button 2li is turned parallel to the base bar on which it is pivoted and the notched bar 22 is turned up into the position indicated by lotted lines in Fig. 5, and tull lines in Fig. 1, and then, the base-piece 2 being lowered into the base-traine C, the saine button 24 serves to confine or hold it securely therein, as shown in Fig. 1. Thus, the button 24e serves two purposes, namely, to lock the supporting bar 22 and to secure the hinged attachment to the base trame C.

lt is to be understood that while the hood A is useful ii'or excluding side light and for projection throligh a window or other aperture, it may be dispensed with in many cases and its frame or 'front portion 1 alone retained.

that I claim is 1. In a photographic-prin'ting apparatus, the combination with a inain frame having an opening therein, ot an attachment comprising a printing frame proper and a rubyglass holder, both hinged to said 'frame and adapted to swing' in opposite directions to cover or uncover said opening, and means for operatively connecting said printing frame and holder, the same consisting ot' a lever pivoted to a fixed support, and bars pivotally connecting the ends ot the lever with the printing traine and holder respectively, substantially as described.

Q. T he combination with a sta nding frame having an opening, and a printing frame proper hinged thereto and adapted to close said opening when in the lowered position, o3 means ttor locking and supporting the printing iii-aine in the raised or horizontal position, the same consisting of a spring lever pivoted on the standing' or iixed frame and a projection on the printing frame tor engaging' said lever, and means lor etlecting disengagen'ient of the lever, the same consisting' of a lever pivoted to the printing frame and a bar having a thumb-piece for operating said lever whereby the aforesaid bar may be sprung out of engagement, substantially as described.

rl`he combination, with a standing' traine having' an opening and a printing trame proper hinged thereto and adapted to close lsaid opening Wlien in tlie lowered position, i ally Operated, for the purpose of disengagsaid frame being provided With a lateral 111g the lever from the frame and allowing projection, a spring lever pivoted to a xed the latter to fall, substantially as described. l0

support and adapted to engage said projee- D WEBB GRAY. 5 tion When the frame is elevated, and a de- Vitnesses:

vice attached to the frame and adapted to HENRY GAIN,

press laterally against the lever, when manu- C. A. CRANE.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. C.

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