US895034A - Attachment for photograhic-printing apparatus. - Google Patents

Description

. PATENTBD AU G.

H. 1;. McIN TIRE. v

ATTACHMENT FOR P'HOTOGRAPHIC PRINTING APPARATUS.

APPLICATION FILED SEPT.'11, 1903.

I l To all wlwm 1 may concern: i

Be it kmwnhmi I, Hnn'vnr n. Mclsrmu,

a citizen of thepUnited States, residing at .South Bend, in the county of St.- Joseph and State of Indiana, have invented certain new and useful Improvements in Attachments for Photograplnc -lrintin Apparatus; and I do hereby declare the following to be a full, clear, and snactdescri tion of the invention, such as Wlll enable ot iers skilled 1n the art to wlnch it apperta ns to make and use the and chalk p iotcgraphs, which are void of normal qualities. This occurs more in the hands ofthe inexperienced and less artistic operator and the present invention is designed to overcome this difliculty by providing means for adiusting the light relative to the negative, so t rat the light may be moved to a position opposite the densely developed portion of the negative, and the actunc rays caused to be emitted rhrectly upon such portion, and thus give normal results in the finished hotogra h. Viit these objects in view, the present invention consists in the construction, combination and operative aggrounmeut of parts, all as will be more fully described hereinafter,

illustrated in the accompanying drawings and finally pointed out in the appended claims.

In the. drawings: Figurel is a view in longitudinal section of the case or cabinet with the lamps mountedthercin, the latter being shown in dotted lines as adjusted to diiferent positions. Fig. 2 is a lan view of the light adjustin means; and ig.3 is a vertical section on t is line 5-2: of F 1g. 2.

Making renewed reference to the drawings, wherein similar reference notations indicate like parts appearing in the several illustrations, 1 designates tie case or cabinet having an-inclined face board 2:, provided with an opening, the edges of which are formed with an oilset flange. 3, or; which is detachably mounted a ground glass or support 4 for the Specification of Letters Patent.

STATES PATENT OFFICE. nnn grn. McEXTIlUL CF son'mr'imxn, INDIANA: V

ATTACHIVIENT FOR PHOTO RAPHIC-PRINTING APPARATUS.

Patented Aug; 4, 190a.

Application and September 11, 1903. seminal-12,760.

negative 5; Ilinged to .the top of the in clined face board 18 a platen 6 a apted to be raised for the insertion of a sensitized ele;

ment which is placed upon the negative and hrld thereto by the. platen when the latter is lowered. 1n the front of the case is formed a hinged door 7 which permits access to the light com artrncnt S beneath the ground glass 4. n the case is ahorizontal artition 9, which constitutes the lower wal oi the light compartment. In this partition are formed a plurality of circular openings 10 in '\\'hich arc mounted the lamp-supporting balls car-members 11. These lamp-sup art-- ing members preferabl consist of sp ieres which are seated in the o enings 10 and formed with a cliarnetrica bore through whic the lamp-rods 12 pass. The lamprods 1'2 are loose in the bores of the spheres,

so thafithey may be moved longitudinally to bring thelarn s, which are designated by 13, nearer or furt ier away from the negative, as desired; and thus the lamps are vertically adjustable in the case.

It will thus be seen that the lamp rod constitutes one of the sup ports for the lamps.

To maintain the lamps in their vertically adjusted position, each supporting member plug 15 screwed within:

the o ening'anr closing the outer end there of. y this construction, it will be apparent that the lam with the rod may be moved vertically wit iin the support 11 by a positive force, but will be prevented from droppi by means of the frictional contact of the pins 14. It will also be seen that the lamp may be adjusted longitudinallywith res ect to the negative, as the sphere with the amp suported thereby may be moved in the socket i ormed by the openinglO', and these different adjustments are indicated in dotted lines in Figs. 1 and 3. It will also be seen that any number of lamps may be em loyed and that each lamp is universally anr independently adjustable, so as to permit some port 1 i t.

lamp to any position with relation to the negical reduction in the photographic tzilres'pirice in accort'lance with the ii of such light. rays; that is, one parts photogaohic paper are pr .ted faster than other parts thereof.

in order to hold the lamps and their supports in their adjusted positionsvfi-I'h respect to their swinging movements and-to prevent displacement ol. the spheres, there iixcd to the partition 9 upon each side of each socket a pair of spring arms iti, the free ends of which engage with the surl'ace t? of the s)here 11 and bear with snlli'cient pressure thereon to prevent the lamps from lining displaced by gravity or By the construction shore. set forth, itw be seen that the lamps have a univer al movementin the lightcompartment. and this universal mm 'ement is notlinritc-d to the sninging movements of the lamps with re spect to the negative, hut also includes movements rectilinear longitudinally or utsuh'. stant-ially right angles to the negative, when? fore the operator is enabled to adjust the ative. When it is desired to specially treat or operate upon a certain portion o. the negro five, the lamp may be moved back and forth within the zone. of the portion to he tr ated in a lane parallel to the negative, notwithstanding the fact that itrequires a. combined oscillatory and-rectilinear movement of the.- lamp, because the axis of the. rod traverses the axis of the sphere. 'l'inis, this pcrallel swing is conveniently accom dished, a it. is not of necessity accompanied with any preparntoi ndjustmen v The lamp rods 12 are connected with the electric conductors 18. The rods may he tubular, in which case the conductors will cxtend thcrethrough n to the lamp socket.

In the operation o the device, the negative is placed upon the ground glass. Access is then had to the light conn'iartment 8 through the hinged door 7, and the lamps may then be. adjusted to any position to cliect the desired result in the printing operation, as has been heretofore pointed out, and these posit-ions may be changed at will in accordance with the character of the negative from which the picture is printed.

Having thus described my invention, what I claim and (lCSiI'O to secure by Letters Patent, is:-

1. In a photographic printingapparatus, a case having means for holding it negative and a. sensitized element, and a plurality of lamps in the case, each lamp havin a. univeisal adjustment independent of tlie otlicr lamps.

'2. in a photographic. printing zto inratus, a case, a pair of lamps mounted in tire case, one of said lamps having a-univcrsal adjust ment independent of the other lamp.

. 1n a shot-owaohie gilllii-i." r a. 7 mraturu. l v

oport in t e case, a lamp i upp' rt, and a swing in the. lfllil l-fiiliu'ltil'i to hold adjusted nositir-iis. -t. in n phou ip tlt printing apparatus, :1 case horn; n 03th for l: n 11 4 negative and a r t'lliillZttl element, id a larnp in the case having a hall and socxet joint. in a ph tographic printin ap mratus, a case having means {ocholding a negative and a sensitized t-lenn-nt, a partition in the case having a socket, a lamp in the. case supp rted in th socket and having a universal adjustment therein. 1

(3. in a photographic printingnpptiratns. a case having; means for holding a negative and a sensitized element and also having in light mmpartn'wnt, and a lamp mounted in said rozu 'mrtnmnt r-nd having a uuiircrsol movement nith resp wt to the-negative.

7..ln :rphotogr phic printing nppalrrtns, a case having means for hold; Q and a' sensitized element, a partition in the case having a H'l\'t n. lamp-supporting nwmher IiuYnlDl) mounted in the socket, and .rneans' on the partition and engaging the supp rting member to prevent displacement ot-thc latter.

S. A photographic printing apparatus having menus for nolding a negative, 21 par tition in the case constituting the hottonrof a light compartment and provided With a, socket, a lanip-supporting member mounted in the soclretand adapted to be adjusted therein, means [or maintaining it in its adjusted positions, and a lamp adjustably connected with said supporting member.

9. In a photographic printing apparatus, case having means for holding at negative therein, a li .it compartment having asocke-t formed therein, a spherical hum-support; loosely titted in the socket, a lamp rod piercing said spherical support ind adjustlit Q a negative ahielongitmlinally therein, and means carried by the spherical support to-maintain the rod in its adjusted position.

' It). In a photographic printing apparatus, a case having means for holding it negative therein, it partition in the case having a' socket, a spherical member loosely fitted within the s cket, means engaging said member to hold it within the socket. and acvent accidental displacei'nent thereof, a. lamp-rod piercing said member and adjustable relative H'- the negative, lamp supported upon the rod, and a. spring-pressed ments being adjustable in the other elementand having its axis traversing the. axis of said other element. 7

12. In a photographic printing apparatus, a case havm lfiEETTSrQEJIDlLlIIJQ a negat ve and a sensitized element, and also havihg' a light compartment, a. lamp adjustably mounted in t- 1e light compartment, a rotate tions at. right angles to the movements of the rotatable member. I

13. In a. photographic printing apparatus, a. case having means for holding a negative and a sensitized element and also having a light com iartment, a lamp adjustahly mounted in the light compartment, a rotatable supporting member for the lamp, a connectin member for the lamp carried by the rota'tal ile member and having its axis traversing the axis of said rotatable member, substantially as specified.

14. In a photographic printing apparatus, a case having means for holding a negative and the sensitized element and also having a light compartment, a lamp disposed in the com Jartment, a ball and socket mounting for the lamp and yieldeble elements engaging the balls. i

15. In a photographic )rinting apparatus, a case having means for olding a negative l l l l l I 1 and the sensitized element and tlso having a l ed, and yieldable elements engaging the ball to hold the lamp 111 ad usted positions.

16. In a photographic printing apparatus, a case having means for holding a negative and the sensitized element, a lamp disposed in the ease, and sprin; controlled means for holdin the lamp in adjusted positions.

17. In a photoeraphie priming apparatus,

a case. having means for holding a negative.

and the sensitized elen'tent, a lamp disposed in the. compartment, a ball and socket mounting for the-lamp, means for adjusting the lamp with respect to the hall, and spring controlled means for holding th ball in different 'jfillltlllS in its socket.

lb. in a photographic-printing device, the combination with negative and paper holdin means, of a pluralit of aetinie lights, and means for varying the respective aetinic lights in their relation to the negative, whereby the intensity of li ht. on various portions of the negative may lie varied. In testimon; \vhe'reofl atlix my signature, in presence. of two witnesses.

lllCliVll Y .ll. MGINTIRE. Witnessesb V Greener. Om'scn, Manon. Ourscu.

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