US916119A - Photographic-printing apparatus. - Google Patents

Description

J. A. DICK. PHOTOGEAPHIG PRINTING APPARATUS. APPLIOATION rum) MAR. 16, 1906.

' Patented Mar. 23,1909.

FIG-.3.

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UNitrsDsrA'r s PATENT ensign.

JOHN A. DICK,

OF OANANDAIGUA, NEW YORK, ASSIGNOR, BY ASSIGNMENTS, TO MARIE ELIZABETH DICK, OF CANANDAIGUA, NEW YORK.

PrroroGRAPme-PRINTIN APPARATUS,

Specification of Letters Patent.

Patented. March 23, 1-9 09.

lippl'ieationflled March 16,1908. Serial No. 421,322.

New York, have invented certain new and useful Improvements in Photogra )hie-Printl'ng Apparatus, of which the fol owing is a specification- This invention relates to photographic printing apparatus, ratus heremafterdescribed and claimed. ts object is to produce aneiiicie'nt device for rapid commercial rinting, in which the pressure board is raise automatically and is low ered to contact position by the operator, preferably by )ressure of the operators foot. Means are aiso provided whereby when the frame is open a non-actinic light is automatieally turned on, and when the\ frame is closed for printing, one or more, actinic lights are turned on and the ruby lamp is turned off.

Other features will appear in the following description In the drawings :-,I*igure 1 is a side elevation ofthe-device, open to receive a negative; Fig. 2 is a central vertical section, showing the parts in position for printing; Fig. 3 is a top-plan view projected from Fig. 2;

and Fig. 4 is a diagram of the lamps and the c0nneotions therefor. I

The device has uprights or corner pieces .1, suitably braced together to form a stand. Across the top of these u irights extends a rectangular frame 2. A sheet of glass 3 is set therein so as to'lie flush with its top face, and

their under sides.

on this glass may be laid the negative and printing paper.

The cover or pressure back which is adapted to press the paper against the negative is made, in the present instance, of two boards 4 and 5, hinged together at 6, and having suitable pads 7 and 8, respectively, ,u on The board 5-is hinge to the frame 2 at 9, and to insure good contact between said board and the glass ,3 at'this point, the hinge may be connected to the frame by a spring 10 (Fig. 2), which tends to pull said pin downward by reacti on the under side of the frame 2. On ea side of the device is a bell-crank lever 11,; ivoted at 12 to the brace 18. Both of said. Yell-crank levers are connected by a transverse bar 14.

A rod 15 connects said bar with a tjreadlede ver 16 that is pivoted to theframeat 17;;

and consists in the ap a again forces .When the operator presses downward on the treadle 18, the levers 11 are thrown forward (Fig.2), and when the pressure on said tread1e. is removed, the levers are returned to the position shown in Fig. 1, by means of springs 19. In the upper ends .of the lovers 11 are slots 20, in which is set a pressure-bar adirpt- I ed to cooperate with the pressure-back aforesaid, and in the present instance comprises a revoluble roller 21. Said roller is normally forcedt oward the bottomof said slots by the tension of springs 22 (Fig. 1). b

When the parts are in the position shown in Fig. 2, the roller 21 is pressed downward u on the board 4, holding it tightly against t e no ative lying upon t e top of the,glass 3',- W en the operator releases the treadle 18, the springs 19 return the levers 11 and the roller 21 to the position shown in Fig. 1, and the said roller then presses upon the frame 2. The upper end of a spring 23 is fastened to a lever 24 that extends from one side of the board 5 and overhangs the pivot 9 (Fig. 1). The tension of this spring, acting upon the lever 24, tilts the board 5 around its hinge 9 as soon as the roller 21 has passed over the latter, and the board 4 is thrown up-. ward by reason of its connection to the board 5, and'lies over said roller as shown. Another downward movement of the treadle 18 carries the roller 21 forward, and the latter the boards 5. and 4 down upon the glass 3. The roller 21 is a mere pressurebar, as would obviously be the; case were it' not rotary inits bearings. a Means may be provided, if desired, to su plement the sprin s 19 in returning the evers 11, etc. to t e ope1'iposition. A spring-actuated roller 25, such as a curtain' roller, maybe pivoted as shown, in brackets 26 (Fig.1 and connected to the roller 21 by flexible bands 27, which are wound; around each ofsaid rollers in the directibn shown to prevent the bands 27 being 'unwond from the roller 21, before it returns with the levers 11. A strip of fabric 28, such as canvas, is fastened at one end to the said rioller and at the otherendlto the frame 23A; 29. As the roller 21 moves forward, the bands 27 are wound upon it, and the strip of'fabric' 28 is unwound. -When said roller moves hackward, thebands 27 can unwindonly 's fast as the fabric28,ijs wound on, andthe tension of said bands is therefore maintained constant. The 'lam pslby which the printingis ac-- complished are shown in the present case as a plurality of incandescent light bulbs, fastened to the device in such a manner as to throw contact switch. Said lever inclosed in a lighttight box 37, which is fixed between the uprights' l.

On the shaft 12 of the levels 11 is fixed an arm 38, which actuates, by means of a link 39, a tilting lever 40 that constitutes a doubleis pivoted to the bottom of the box 37 at 4], and its one end is adapted to contact with a post 42 when the pressure-back aforesaid is down, and with a similar post 43 when said pressure-back is up.

The main feed-wire 44 (Fig. 4) leads from a source of current to the pivot 41 of the tilting lever 40. From the post 42 a wire 45 leads to one side of the lamp 30 and thence to a button-switch 46, which latter may be placed on the front side of the box 37. From said switch a wire 47 connects with each of the lamps 31, 32, 33 and 34, and

fromthe opposite side of said lamps connections lead to the main return wire 48. wire 49 leads from the negative side of the lamp 30 to the main return wire 48, and current may pass through said lamp whether the switch 46 is 0 en or closed.

As is apparent y reference to Fig. 2, the lever 40 is in contact with the post 42 when the pressure-back is down. If the switch 46 is closed, current may flow through the lamps 30, 3], 32, 33, and 34, and the printing is accomplished in a very short time. If less light is desired for printing, as in border work on masked negatives, the switch 46 is opened, thereby breaking the circuit through the lamps 31, 3:2, 33 and 34, but not cutting off the current from the lamp 30. Said lamp. then burns untilthe'treadle 18 is released. When this occurs, the lever 40 is tilted in the opposite direction, thus breaking the contact with the post 42, and making contact with the post 43." In the latter position current may flow tl'irough but one path, namely,

from the wire 44, through the lever 40, the

post 43, the wire 50, the ruby lamp 35, and to the return. wire 48. Thus, when the frame is open (Fig. 1) only the ruby lamp is burning, and by the light therefrom the negative and paper may be. adjusted as desired upon the glass As the operator presses the treadle i8 downward, the circuit throu h the ruby lamps 35 is broken, and when the pressure-back is completely in contact position, the said circuit is broken, and the tive support, a two-part n'essure-haek hinged. at one end to the support and having the two parts thereof hinged together, means for automatically throwing said pressure-back away from the negative sup port, a pair of hell crank levers pivoted to said frame, spring means for throwing said levers in one direction, a pressure-roller carried by said levers and adapted to roll against said pressure-back to close the same upon. the negative support and to press said pressurc-backagainst the same, a springactuated roller upon said frame, a flexible band therefrom to said pressure-roller for rotating and retracting the same, a flexible band attached to the frame and wound on said pressure roller oppositely to the first mentioned band, an actinic electric light, a non-actinic electric light, a source of elec 'tric current, a switch operated by one of said levers for throwing said actinic light into circuit when the non-actinic light is thrown out of circuit and for throwing the non-actinic light into circuit when the actinic light is thrown out of circuit, an actinic electric light of lower power, ,means-for throwing the same into circuit and for throwing said first mentioned actinic light out of circuit and vice versa, and means for operating said levers and said switch.

2. In a photographic printing apparatus, the combination of a frame having a nega tive support, a two part pressure back hinged at one end to the support and having the two parts thereof hinged together, means for automatically throwing said pressureba'ck away from the negative support, a pair of bell crank levers pivoted to said frame, spring means for throwing said levers in one direction, a pressure-roller carried by said levers and adaptedto roll against said pressure-back to close the same upon the negative support and to press said pressureback against the same, a spring-actuated roller upon said frame, a flexible band there-' from to said pressure-roller for rotating .and retracting the same, a flexible band attached ;to the frame and wound on'said pressureroller oppositely to the first mentioned band, an actinic electric light, a-nonactinic electric light, a source of electric current, a switch 0 erated by one of said levers for alternate y throwing said actinic light intov circuit when the non-actinic light is thrown out of circuit and for throwing the nonactinic light int-o'circuit when the actinic light is thrown out of circuit, and means for operating said levers and said switch.

' same upon the negative support and to press said pressure-back against the same, a

s ring-actuated roller upon said frame, a

exible \band therefrom to said pressureroller for rotating and retracting the same, a flexible band attached to the frame and wound .on said pressure-roller oppositelyto the first mentioned band, an actinic electric light, a. non-act1nic electric light, a

source of electric current, a switch for throwing' said actinic light into circuit when the non-actinie light is thrown out of circuit and for throwing the non-actinic light into circuit when the aetinie light is thrown out of circuit, an ,actinic electric light of different power, means for throwing the same into circuit and for throwing said first mentioned actinic light out of circuit and vice versa; and means for operating said pressure-rollerand said switch.

4. In a photographic printing apparatus, the combination of a frame having a negative support ,1 a two-part pressure back that is rigid when in the pressure position and is hinged at one end to the support and composed of twd parts hinged rigidly together, means for automatically throwing said prcssure-back away from the negative support, a roller-carrier, a spring-supported pressureroller carried thereby adapted to rol along said pressure-back to close the same upon the negative support and to press said pressure-back against the same, a spring-actuated roller upon said frame, a flexible band therefrom to ,said pressure-roller for rotating and retractingthe same, a flexible band attached to the frame and wound on said pressure-roller o ipjositely to the first mentioned band, an aetinic electric light, a non-actinic electric light source of electric current, a

switch for throwing said actinic light into ci1r-; cult when the non-actinic light is thrown out of circuit and for throwing the non-actinic light into circuit when the 'actinic light is thrown. out of circuit, and means for operating said pressure-roller and said switch.

5. In a photographic printing apparatus,

the combination of a frame having a nega-,

tive support, a two-part pressure-back that i is rigid when in the pressure position and" is lunged at one end to the support by a yielding connection, means for automatically throwing said press'ure-back'away from the negative support, a rollercarrier, spring means for moving the same in one direction, a spring supported pressure-roller carried by said carrier and adapted to roll along said pressure-back and to close the same upon the negative support and to press the pressureba'ck against the same, a yielding connection between said pressure-roller and said carrier, a spring-actuated roller upon said frame, a

flexible band therefrom to said pressure-' roller for rotating and retracting the same, a flexible band attacl'ied to the frame and wound on said pressure-roller oppositely to the first mentioned hand, and means for operating said roller-carrier.

(i. In a photograpliih printing apparatus, the combination of aframe having a negative support, a pressure-hack pivoted to said frame, actuating means for moving said prcssure-liack toward and from the support, an actinic light, a non-actinic light, and means operated by saidactuating means for automatically and alternately turning said two lights off and on when the pressure-back is againstthe ncgativ e support oraway from it.

7. In a photographic printing apparatus, the combination of a franie havinga negative support, a pressure-back lunged at one end to the support by ayielding connection, a yielding pressure-bar for \n'essing the other end of the back toward the support, means for automatically moving said pressure-back away from. the support, and an oscillating pressure-bar for turning said pressure-back on its hinge and for pressing it toward the same.

8. In a photographic printing apparatus, the combination. of a frame having a negative support, a pressure-back conneei ed to the support by a yielding connection, a yielding pressure-bar for pressing the back toward.

the support, means for autoinatically moving said pressure-back away from the support, and an oscillatim pressure-bar for" turning said pressure-bacli toward thesiipport and for pressing it'toward the same.'-

9. In a photographic printing,apparatus, the combination of a frame having a negative s'up wit, a pressure-backthat is rigid Whenin t e pressure position. and is hinged at one end to the support by a yielding connection, a spring-supported yielding ressure-bar for pressing the other end of the liack toward the support, means for automatically moving sair pressure-hack away from the support, and means for operating said pressure-bar. 10. In a photographic printing apparatus, the combination of a frame having a negative support, a pressure-back that isrigid When in the pressure positionand is hinged to the support by a yielding connection, a spring-sup )orted yielding pressuretbar for tilting the aek on its hinge anii'foi'jpressing the back toward the,suppo t, means for automatically moving said pressure-back away from the support, and means for operating said pressure-bar. v

11. In a photographic printing apparatus, the combination of a frame having a negative support, a two-part pressure-back hav ing its rear part hinged at one end to the support and in which two flat, rigid parts are hinged together, means for automatically moving said pressure-back from the support, and means for turning said rear part on its hinge, whereby it clamps part of the positiv-crmaterial against the negative, and then for turning the other part on its hinge whereby it clamps the remainder of said positive material against the negative. 12. In a photographic printing apparatus, the combination of a frame having a negative support, a two-part pressure-back that is rigid when in the pressure position and is hinged at one end to the support, means for automatically moving said pressure-back from the support, and reciproc'atory means having a path .of movement along the pressure back for turning said pressure;

' back on its hinge, whereby one part thereof clamps art of the paper against the negative an then the other art clamps the remainder of said paper against the negative.

13. In a photographic printing apparatus, the combination of a frame having a negative support, a. pressure-back that is rigid when in the pressure position and is hinged to the support and comprising means for clamping part of the printing paper to the 9 the combination of a frame having a negative support, a pressure back that is rigid when in the pressure position and is hinged to the sup-port, means for automatically moving said pressureback from the support, and reciprocatory means having a path. of movement along the pressure-back for mos ing said pressure-back on its hinge and for pressing it toward the same.

15. In a photographic printing apparatus, the combination of a frame having a nogative support, a pressurabaclc. that is rigid when in the pressure position and is yierdingly connected to the support, means for automatically moving said -pressure-bacl: from the support, and spring-yielding reciprocatory means having a path of movement along the pressure-back for moving pressure-back toward the support and for pressing it toward the same.

JOHN A. 'DILK.

Witnesses: i

D. GURNEE. L. TnoN.

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