US711857A - Photographic-printing apparatus. - Google Patents

Description

No. 7||,857. Patentad Oct. 2|, I902.

A. F. HEWITT.

PHOTOGRAPH: PRINTING APPARATUS.

(Application fllod Pub. 86, 1901.) (No Model.)

2 Shoots-Sheet I.

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No. 7l|,857. Patented Oct. 2|. I902. A. F. HEWITT.

PHOTOGRAPH; PRINTING APPARATUS.

(A umion filed Feb. 25, 1901.)

(No Model.)

2 Sheets-Sheet 2.

UNITED STATES PATENT OFFICE.

ARTHUR F. IIPHVITT, OF ST. LOUIS, MISSOURI, ASSIGNOR TO GENERAL ARISTO COMPANY, OF ROCHESTER, NEW YORK, A CORPORATION OF NE\V YORK.

PHOTOGRAPHlC-PRINTING APPARATUS.

SPECIFICATION forming part of Letters Patent No. 71 1,857, dated October 21, 1902.

Application filed February 25, 1901. Serial No. 48,665. (No model.)

To (tZZ whom it may concern.-

Be it known that I, ARTHUR F. HEWITT, a citizen of the United States, residing at St. Louis, State of Missouri, have invented certain new and useful Improvements in Photographic-Printing Apparatus, fully described and represented in the following specification and the accompanying drawings, forming a part of the same.

This invention relates to improvements in photographic-printing apparatus.

The present invention relates to a photographic-printing apparatus comprisingasuitable support upon which are mounted an electric-light fixture or fixtures and conductors therefor adapted for connection to the electric-light fixtures of a room and a printingframe which is hinged to the said support, so as to be swung upwardly and downwardly into and out of printing position, respectively, and when so moved to close and open, respectively, the circuit of the electric-light fixture or fixtures, so that when the printingframe is in its upward or printing position the light is turned on and when it is moved from that position downwardly to non-printing position the light is turned off.

In the accompanying drawings, Figure 1 is a side elevation of a photographic-printing apparatus embodying the several features of the present invention. Fig. 2 is a plan view of the same. Fig. 3 is a section on the line 3 of Fig. 2; and Fig. 4 is an end view looking toward the left of Figs. 1, 2, and 3.

Referring to said drawings, 1 represents the printing-frame, and 2 a supporting-frame for the electric-light fixture or fixtures, these two frames being mounted upon a support consisting of a table 3, mounted upon legs 4, which, as shown in Fig. 4, are adapted to be screwed into and out of the base 3 for convenience in packing and shipping the several parts of the apparatus. The light-supporting frame 2 consists of a base 5, for attachment to the support 3, and a rear wall 6, bearing the illuminating devices, which consist of a pair of incandescent electric lamps 8, having flexible electric conductors 9 10, provided with a plug 11 for connecting said conductors and lamps with the electric-light fixtures of a room.

The printing-frame 1 (which will be hereinafter more fullydescribed) is mounted upon a carrier 12, connected to the support 3 by a bolt 13, passing through a longitudinal slot 14 in said support and provided at its lower end with a thumb-nut 15, whereby said carrier, and with it the printing-frame, may be adjusted longitudinally of the support 3 and to and from the lamps 8 and locked in its position of adjustment and whereby also said carrier and its frame 1 may be disconnected from the support 3 for packing and shipment. The light-supporting frame 2 is similarly connected to the opposite end of support 3 by means of a bolt 16, slot 17, and thumb-nut 18, so that said light-supporting frame may also be adjusted longitudinally of the base 3, if desired, and locked in its position of adjustment and may also be disconnected therefrom when desired for the purpose of packing and shipment.

The purpose of mounting the printing frame 1 and lightesupporting frame 2 upon the support 3 in the manner described is primarily to enable the two frames to be adjusted different distances from each other, and thus to vary the distance between the light on the frame 2 and the negative on frame 1, so as to suit negatives of dilferent densities. To secure this result, however, it is not necessary that both the printing-frame 1 and light-supporting frame 2 should be adjustable, as the same result could be obtained by having one frame fixed; but it is preferable to so mount both frames, as it enables them to be disconnected from the support 3 for packing and shipment, as before stated.

The printing-frame 1 is hinged, as shown, to its carrier 12, so as to swing thereon vertically into and out of printing position relatively to the lamps S, as shown by full and dotted lines in Fig. 1, the full lines of that figure showing the printing-frame in its vertical or printing position, while the dotted lines show it in its horizontal or non-printing position and the position it will occupy while a negative or sheet of photographic-printing paper is being placed in position in the printing-frame.

The pintles 19 of the hinges, by which the printing-frame 1 is connected to the carrier 12, are preferably removable, as shown, so that the printing-frame may be removed from the carrier and replaced by another of the same or ofa different size or a frame for containing a negative and sheets of different size.

The closing of the circuit through the conductors 9 10, and consequent lighting of the lamps 8, is controlled by the printing-frame 1 in such manner that when the latter isiu its horizontal or non-printing position said circuit is opened and the light turned off'and when it is in its vertical or printing position said circuit is closed and the light turned on. The connections for so controlling the light by the movement of the printing-frame will now be described.

The conductor 10 is, as shown in Fig. 1, connected to a stationary contact or brush 20, secured tothe rear end of the carrier 12, while the conductor 9 is connected to a movable contact-plate 21, secured to the lower edge of the priuting-fram el, this movable contactplate 21 when in engagement with the brush'2O (as is the case when the frame 1 is in its vertical position) closing the circuit through the conductors 9 10 and when disengaged therefrom (such disengagement taking place when the frame is swung from vertical position) openiugsaid circuit. From this construction it results that when the printing-frame 1 is moved to its vertical or printing position, as shown by full lines in Fig. 1, the contact 21 engages the brush 20 and closes the circuit through the conductors 9 10, thus turning on the light, the circuit remaining thus closed so long as the printing-frame 1 is permitted by the operator to remain in its vertical position. As soon, however, as the printing of a sheet of paper is effected the operator will swing the printing-frame 1 downwardly into its horizontal position, as shown by dotted lines in Fig. 1, and as soon as this movement of the fraine 1 is begun the contact 21 is moved out of engagement with the brush 20 and the circuit through conductors 9 10 and lamps 8 is consequently broken and the light turned 0K.

The mounting of the printing-frame in the manner described and the controlling of the lightthat is, turning it on and 0E by the movement of the printing-frame into and out of printing position-are features ofconsiderable importance for several reasons, among which are the following: They reduce the work of printing to the minimum, as theparts require but very little manipulation by the operator, his work being confined to raising and lowering the printing-frame into and out of printing position and the removal and introduction of sheets to be printed from, which is done while the frame lIlS face down in horizontal position.

Again, the exposure. of a negative to the light may be regulated cured on each sheet printed upon, as where such shutters or aprons are employed there is necessarily an absence of absolute uniformity in printing, some portions of the negative as the shutter or apron is moved up and down being exposed longer to the action of the light than other portions of the negative. In addition to this adjustment longitudinally of the support 3 the printing-frame 1 and light-supporting frame 2 are by reason of the connections between them and the support 3, already described, also adapted to swing horizontally, so as to be angularly adj usted relatively to each other for the purpose of bringing denser portions of a negative,considered widthwise of the printing-frame, into closer proximity to the light upon the lightsupporting frame than other portions of said negative.

The printing frame 1 consists of two members 22 23, the former being provided with an opening 24, through which the negative 91 is exposed to the light, and the latter with an opening 25 for the reception of the sheet 8 of photographic-printing paper, upon which a print from the negative is to be taken. The two members 22 23 of the frame have their adjacent faces lined with felt or other suitable material, and one of said members is provided with pegs 26, adapted to enter corresponding openings in the other member, whereby accurate register is secured and maintained between said two members when which areadapted to engage and interlock.

with catches 28, secured to the other member, it being understood that when the springs 27 interlock with said catches 28 they are under pressure, so as to yieldingly hold the two members 22 23 of the frame together to prevent displacement of the negative between them.

The'paper-receiving opening 25 in the member 23 of the printing-frame, which is of smaller size than the opening 24 in the member 22, is of substantially the same dimensions as the sheets of paper upon which prints are to be taken from the negative between the two members.

The opening 25 in the member 23 is provided with a door 29, hinged tosaid member at its lower end and provided with a spring 30, which in the closed position of said door is adapted to engage with a spring-catch 31 upon the upper edge of said member and when so engaged to hold said door yieldingly in engagement with the sheet of paper within the opening during the printing operation. The door 29 is also provided with a torsional spring 32 for throwing it open when the spring 30 and spring-catch 31 are disengaged, the spring 32 also serving as the pintle for the hinges 33, connecting the door to the member 23.

The manner of using the apparatus described is as follows: In printing the negative n is first introduced between the two members 22 23 of the printing-frame, the two members being then secured together by ongaging the springs 27 with catches 28. The thumb-nut 15 being loosened, the carrier 12 and frame 1 are adjusted horizontally of support 3, so as to set the negative at the proper distance from the lamps 8, according to the density of the negative. If one portion of the negative, considered widthwise of the frame 1,is denser than other portions, the carrier 12 and frame 1 are then swung horizontally upon support 3, so as to bring such denser portions of the negative into closer proximity to the light than other portions thereof. The frame 1 being thus properly adjusted, it will then be secured in position by tightening up the thumb-nut 15, and the apparatus is then ready for the printing operation. The frame 1 beingin the horizontal position shown by dotted lines in Fig. 1, the operator will open the door 29, insert a sheet of printing-paper, (which need not be'centered by him, as it fills the opening 25,) and then closes and secures the door 29 by engaging spring 30 with catch 31. The frame 1 is then swung upwardly by the operator to vertical position, the contact-plate 21 then engaging brush 20 and closing the circuit through conductors 9 10 and lamps 8. The frame 1 remains in this position until the time for exposure (determin ed by the operator) has expired,when it is swung downwardly by the operator to horizontal posit-ion. The spring 30 is then disengaged by the operator from catch 31, when spring 32 will throw the door 29 open, so that the operator may remove the sheet printed upon and insert another. As soon as the movement of the frame 1 from vertical position is begun the contact-plate 21 will be disengaged from brush 20, thus breaking the circuit through conductors 9 10 and lamps 8 and putting out the light, the circuit remaining in this condition until the frame 1 is again moved to vertical position.

What I claim is- 1. In a photographic-printing apparatus, the combination of asuitable support, a printing-frame adapted to move thereon into and out of printing position, a light-fixture, and connections controlling the light therefrom and in turn controlled by the movement of the printing-frame, substantially as described.

2. In a photographic-printing apparatus, the combination of a suitable support, a printing-frame adapted to swing thereon into and out of printing position, a lightfixture, and connections controlling the light therefrom and in turn controlled by the movement of the printing-frame, substantially as described.

3. In a photographic-printing apparatus, the combination of a suitable support, a printing-frame adapted to swing vertically thereon into and out of printing position, a light-fixture, and connections controlling the light therefrom and in turn controlled by the movement of the printing-frame, substantially as described.

4. In a photographic-printing apparatus, the combination of a suitable support, a printing-frame adapted to move thereon into and out of printing position, and an electric-light circuit controlled by the movement of the printing-frame, substantially as described.

5. In a photographic-printing apparatus, the combination of asuitable support, a printing-frame adapted to swing thereon into and out of printing position, and an electric-light circuit controlled by the movement of the printing-frame, substantially as described.

6. In a photographic-printing apparatus, the combination of a suitable support, a printing-frame adapted to swing vertically thereon into and out of printing position, and an electric-light circuit controlled by the movement of the printing-frame, substantially as described.

7. In a photographic-printing apparatus, the combination of a suitable support, a lightsupporting frame provided with a suitable light-fixture, a printing-frame carrier, said supporting-frame and carrier being relatively adjustable to and from each other along the support, a printing-frame adapted to move on said carrier into and out of printing position, and connections controlling the light from said light-fixtu re and in turn controlled by the movement of the printing-frame, substantially as described.

8. In a photographic-printing apparatus, the combination of asuitable support, a lightsupporting frame provided with a suitable light-fixture, a printing-frame carrier, said supporting-frame and carrier being relatively adjustable to and from each other along the support, a printing-frame adapted to swing on said carrier into and out of printing position, and connections controlling the light from said light-fixture and in turn controlled by the movement of the printing-frame, substantially as described.

9. In a photographic-printing apparatus, the combination of a suitable support, a lightsupporting frame provided with a suitable light-fixture, a printing-frame carrier, said supporting-frame and carrier being relatively adjustable to and from each other along the support, a printing-frame adapted to swing vertically on said carrier into and out of printing position, and connections controlling the light from said light-fixture and in turn controlled by the movement of the printingframe, substantially as described.

10. In a photographic-printing apparatus, the combination of a suitable support, a lightsupporting frame provided with a suitable light-fixture, a printing-frame carrier, said supporting-frame and carrier being relatively adjustable along the support to and from and also angularly with relation to each other, a printing-frame adapted to move on said carrier into and out of printing position, and connections controlling the light from said fixture and in turn controlled by the movement of the printing-frame, substantially as described.

11. In a photographic-printing apparatus, the combination of a suitable support,a lightsupporting frame provided with a suitable light-fixture, a printing-frame carrier, said supporting-frame and carrier being relatively adjustable along the support to and from and also angularly with relation to each other, a printing-frame adapted to swing on said carrier into and out of printing position, and connections controlling the light from said fixture and in turn controlled by the movement of the printing-frame, substantially as described. I

12. In a photographic-printing apparatus, the combination of a suitable support,a lightsupporting frame provided with a suitable light-fixture, a printing-frame carrier, said supporting-frame and carrier being relatively adjustable along the support to and from and also angularly with relation to each other, a printing-frame adapted to swing vertically on said carrier into and out of printing position, and connections controlling the light from said fixture and in turn controlled by the movement of the printing-frame, substantially as described.

13. In a photographic-printing apparatus, the combinationof a suitable support,a lightsupporting frame provided with an electriclight fixture, a printing-frame carrier, said supporting-frame and carrier being relatively adjustable to and from each other along the support, a printing-frame adapted to move on said carrier into and out of printing position,an electric circuit leading from the lightfixture to said carrier, and means whereby upon the movement of said printing-frame into and out of-printing position said circuit is closed and opened respectively, substantially as described.

14. In a photographic-printing apparatus, the combination of a suitable support,a lightsupporting frame provided with an electriclight fixture, a printing-frame carrier, said supporting-frame and carrier being relatively adjustable to and from each other along the support, a printing-frame adapted to swing on said carrier into and out of printing posi- ,tion,an electric circuit leading from the lightfixture to said carrier, and means whereby upon the movement of said printing-frame into and out of printing position said circuit is closed and opened respectively, substantially as described.

15. In a photographic-printing apparatus, the combination of a suitable support, a lightsupporting frame provided with an electriclight fixture, a printing-frame carrier, said supporting-frame and carrier being relatively adjustable to and from each other along the support, a printing-frame adapted to swing vertically on said carrier into and out of printing position, an electric circuit leading from the light-fixture to said carrier, and means whereby upon the movement of said printing-frame into and out of printing position said circuit is closed and opened respectively, substantially as described.

16. In a photographic-printing apparatus, the combination of a suitable support, a lightsupporting frame provided with an electriclight fixture, a printing-frame carrier, said supporting-frame and carrierbeing relatively adjustable along said support to and from and also angularly with relation to each other, a printing-frame adapted to move on said carrier into and out of printing position, an electric circuit leading from the light-fixture to said carrier, and means whereby upon the movement of the printing-frame into and out of printing position said circuitis closed and opened respectively, substantially as described.

17. In a photographic-printing apparatus, the combination of a suitable support, a lightsupporting frame provided with an electriclight fixture, a printing-frame carrier, said supporting-frame and carrier being relatively adjustable along said support to and from and also angnlarlywith relation to each other, a printing-frame adapted to swing on said carrier into and out of printing position, an electric-light circuit leading from the lightfixture to said carrier, and means whereby upon the movement of the printing-frame into and out of printing position said circuit is closed and opened respectively, substan tially as described.

18. In a photographic-printing apparatus, the combination of a suitable support, a lightsupporting frame provided with an electriclight fixture, a printing-frame carrier, said supporting-frame and carrier being relatively adj ustable along said support to and from and also angularly with relation to each other, a printing-frame adapted to swing vertically on said carrier into and out of printing position, an electric-light circuit leading from the light-fixture to said carrier, and means Whereby upon the movement of the printing-frame into and out of printing position said circuit is closed and opened respectively, substantially as described.

. 19. In a photographic-printing apparatus, the combination of support 3, light-support- IIO ing frame 2, carrier 12, printing-frame 1 my hand in the presence of two subscribing hinged thereto, electric lamp 8 on frame 2, witnesses. conductors 9, 1O connecting said lamp with carrier 12, and contact 21 borne by frame 1 ARTHUR 5 and controlling said conductors, snbstan-i Witnesses:

tiaily as described. J OHN A. GRAVES,

In testimony whereof I have hereunto set A. A. V. BOURKE.

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