US1034772A - Photographic-printing machine. - Google Patents

Description

0. J. EVERETT & J. V. McADAM;

PHOTOGRAPHIG PRINTING MACHINE.

APPLICATION FILED JUNE 14, 1910.

Patented Aug. 6,

U ITED sTA s PATENT OFFICE.

crmnnnsa. nvnnnrr- AND JOHN v. Mchnm, on NEW YORK, N. Y., AssIoNons-To REVOLUTE MACHINE comrANY, on NEW YORK, .N. Y., A CORPORATION'OF NEW YORK- 1,034,772-

To all whom it concern:

Be it known that we, CnARLns J. Evnnn'rr and JOHN V. 'MoAoAM, citizens of the i represents in front United States, and residents of the borough of Manhattan, .in the city and State of New York, have invented a new and useful Improvement in Photographic-Printing Machines, of which the following is a specification.

Our iiivention relates-to certainirnprovements in that class of photographic printing machines in which means are provided .for continuous printing of long sheets 'or strips of drawings, such, for instance, as'

.(lrawings made on tracing cloth.

OllezObjBCliOf our-invention is to provide a continuous photographic printing machine with the lamps-exterior to the cylinder, the

arrangement of the parts of, which shall make fore used, which be'itsabsorb alarge propor-.

tion of the actinic lightandcause' streaks the prints, due to jo1nts.in.'the belts;

A further object of our invention is to provide a mechanism in which the photographic paper and interposed drawingsv are passedonto and off of a revolving transparent cylinder, tact, which injures the surface of the drawmg, where the printing is done, as insome machines, over a stationary transparent curved surface.

A further object of our invention is tosection taken adjacent to one side of the machine and showing one of the rocking \ar'ms' which carry the top roll and its curved shoe. (guide. 7 p

" photographic printing machine frame is denoted by 1. It may be provided with the usual compartment 2 for the photographic sheet supply roll and a box 4 for 1t possible to make prints ofany length whatever without the -;use of inter-. vening partially transparent belts hereto-- avoiding the sliding conrhoroeaArmc-rm rINc MACHINE.

1910. Serial Nd. 566,8 27.

receiving the photographic sheet and the sheet of drawings after the photographicsheet has beenprinted. The transparent cylinder is denoted by 5. Belts 6 pass around the ends of the cylinder 5, and around a tension roll 7 mounted in rocki arms 8, one only of which is shown, pivote on a cross bar 9. Coil springs 10, one only of which is .shown'herein, tend to pull the tension roll 7 away from the cylinder 5 and thus keep the required tension upon the belts 6, one only of which belts is shown in the accompanying drawings. A cross roll 11 is.

mounted in close proximity to the bottom of the cylinder 5. ,Another cross roll 12 is mounted a short distance from the cylinder 5 at the rear thereof. A third cross-roll 13 is mountedvin the free ends of rocking arms 14, one-only of which is shown, pivoted to a "ross bar 15, which roll 13 is arranged to rest .upon thetgp of the transparent cylinder 5. I The -'means for passing thephotographie sheet anda sheet of drawin s interposed between it; nd the exteriorof the transparent cylinder at the back thereof, comprises one or morebelts 18. In the present instance,a

Specification or wa Patent. t t Aug 9 Application filed. June 14,

plurality-of narrow belts 18 are shown which pass around the three rolls 11, 12 and 13, and partially around the cylinder 5. It will thus be seen that the cylinder 5 is held in position by. the belts 18 and the belts 6, the belts 18 tending to force the cylinder 5 outwardly and the belts 6 tending to draw the cylinder inwardly. The shaft 16 of the roll 12 is adjustable along a slot 17 in each side of the frame 1 so that the roll 12 may be adjusted toward and away from the cylinder 5 .for adjusting the tension of the belt or belts 18.

Any suitable mechanism may be provided for driving the ,belts 18 and thereby rotating the cylinder 5 at the proper speed. In the present instance, the shaft 19 of the roll 11 is shownas' being provided with a driving pulley 20, by which rotary movement may be imparted to the roll 11 from any suitable source of power, not shown.

A row of lamps 21 is arranged exterior to and adjacent the front of the transparent cylinder 5 so that the light therefrom will pass through boththc front and back walls of the cylinder 5 before reaching the sheet of drawing which is interposed between the exterior surface of the back of the cylinder 5 and the photographic sheet. These lamps ing frame 23 pivotedon a cross bar 2% at the base of the machine frame; The lamps '31 may be held at the limit of their inward movementgand at the limit of their outward and the top movement by a looped catch arranged to engage a cross bar 26 on the machine frame.

To prevent the cylinder 5 from becoming too hot, owing to the heat of the lamps 21, We provide a suitable l-lower 27, the outlet .box 28 of which is provided with a transverse series of holes29 arranged to direct the jets of air upwardly between the lamps 21 and the front of the cylinder 5. This box 28 also serves as a support for a stripper 3O arranged'to engage the bottom of the cylinder 5 just in front of the rollll for stripping the sheet 'ofdrawings and the photographic shcet from the cylinder. The front inclined wall 31 of 'thebox 4 extends upwardly into close proximity to the stripper30.

The machine is provided with a feed table 32 over which the .hotogra hic sheet passes after itleaves its box 2. n this table 32, the shectof drawings may-be placed on top of'thc photographic sheet. curved guide 33islocatedhinclose proximity to the front of the muaa, which guide isadjustably supportedin a rotary direction'upon a cross bar '34by-means of set screws 35 and is adj'ustable'vcrt' ally'by means of set screws 36 which'engag'e the depending ends 37 of the crossbar 34, the set screws 36 and depending 'ends'37 being-engaged'with the free ends of the rocking arms 14. Thiscurved guide 33 serves to'direct the photographic sheet and the sheet of drawings around the rollvl3 into position to be grasped between the roll 13 of the transparent cylinder The adjustability of the guide permits it to be properly placed with respect to the feed roll and cylinder to cause the sheet to bc fed accurately and evenly between the feed roll andcylinder. The transparent cylinder 5 is prevented from creeping endwise by providing guide rollers 38, one 0111 otwhich is shown, engaging the ends of e cylinder.

It will be seen, from the above descrip tion, that the lamps are located exterior to the cylinder and that the light passes through both walls oi the cylinder for purposes of printing. It will also be seen thatthe lamps may be readily swung out of their operative position for purposes of cleaning and replacement. It will also be seen that the lamps may be made of very high power without danger of overheating and thus breaking the cylinder "5, the blower serving to keep a proper circulation of cooling air between the lamps and the transparent cylinder. By mounting the roll 13 upon the swinging arms 14, it will be seen that the roll will rest at all times upon the top of the cylinder 5 even if the cylinder is uneven.

' In using the term sheet of drawings, it

is to be understood that we intend to cover by such expression, any sheet bearing characters capable of being printed upon a photographic sheet by the action of light.

hatwe claim is .1. In a machine of the character described, a rotary transparent cylinder, means for bringing a photographic sheet and an inter posed sheet of drawings into and out of contactwith a portion of the periphery ot-the cylinder, and one or more lamps located exterior to the cylinder and upon the side thcreot opposite to said means.

2. In a machine of the character described, a rotary transparent cylinder, means for bringing a photographic sheet and an interposed sheet of drawings into and out of-conlact with a portion of the periphery of the cylinder, one or more lamps located exterior to the cylinder and upon the side thereof opposite to said means, and a movable support for said lamp or lamps. l

3. In a machine of the character described, a rotary transparent cylinder, means for bringing a photographic sheet and an interposed sheet of drawings into and out of contact'with a portion of the periphery of the cylinder, one or more lamps located exterior to the cylinder and upon the side thereof op posite to said means, and one or more reflectors-fior said lamp or lamps.

l. In a 'iiiachinc of-the character described, a rotary transparent cylinder, means for bringing a. photographic sheet and an interposed sheet of drawings into and out of conand out of contact with a portion of the periphery of the cylinder, one 'or more lamps located exterior to the cylinder and upon the side thereof opposite to said means, and means for producing a circulation of air to carryofi' a part of the heat produced by said lamp or lamps.

6. In a machine of the character described, a rotary transparent cylinder, means for bringing a photographic sheet and an interposed sheet of drawings into trans parent cylinder,

and out of contact with a portion of the periphery of the cylinder, one or more lamps located exterior to the cylinder and upon the side thereof opposite to said means, and means for passing a current of a ein 1e peripheg; 01% see ejgenuent etc the Sam the cylinder in 3!. beite.

e the character de in we or more beits leading around the s an contacting said cylinder for togmphie sheet and a sheet of ..n a and out of contact with a ne periphery of the cylinder, 5 L i; in lependent beits passing around Un if the, eyiinciez' and said last roll it g the cyiinder in piece against first-millet! belt or mile.

in maehine' of the character tieretery or more belts lending around. said -':0ntacting said cylinder for passmtegmphic sheet and. a sheet of into and out of Contact with n the periphery 0.? the cyliniier one its also contacting said cyiindei', ice-; fer said isl t-named reii mow anal away In said eyiinciei' 720?} '50 ust itself". to any the eyiir tr. (shine at the shamcter v I cyiincier, it feed tabie, 21, 01 mile, one or mere belts Leading xiii r0315 contactingeaid cyl- 1 seeing a. photegraphic sheet and rawings into and out of Contact ion ofthe periphery of the enrve'i gui-ie one of said. ed to 'nicie the -photographie I a I 1 I aieet 0t drawings from and feed l etnry cylinder, a plurality of eylinder, a plurality oi.

table t0 said retary eyiinder, and means fdr adjusting said curved guide to permit be properly plaeeci with respect to the feed i and cyhnder to cause the sheet to be 1 accurately and evenly between the feat i and eyiinder,

V. In a machine of the character described a rotary cylinder, at feeci table, a pinmiity of rolls, one or mere belts leading are-and the rails and contacting said eyi; (lei: passing a phetegmphie sheet and a sheet of drawin into and out of centact with LL port-inn 0 the periphery of the cylinder, a support, movable with respect to the cyiinder, 5501' one of the said rolls and. a curved guide mounted on said movable sup port for guiding the photogm hic sheet 21115. the sheet of drawings aroun said But named r011 from said feed. table to the c tinder. v

12" In a, machine of the character de-, scribed, a retary cylineier, a feed table, 2 pi: "aiity n1 reiis, ene or mere beits leading in and the mile and contacting; said cylinder fey passing a. phetngmphic sheet of drawings into and out 0% Contact with a,

portion ef the periphery of the cylinder, :1, support movable 'witi'i respect to the cy1intier, for one of the said mils and a eurved said movable guide edjustabiy mounted. en

Summit for accurately anti evenly 'uiding photographic me t new sheet 01 draw- Y a'if'emni seirf i559 #tneefireil tram said 1 to the e iinc ier.

in, tn'nony, that We claim the ongoing em in ventien we have signeci eur names in presence of twe witnesses, this 26th (iay of April 1910.

CHARLES J. EVERETT. JOHN V. MGADAM.

Viitnesses:

twnonen BARRY, HENRY C. "Emmrn.

it to;

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