US891347A - Enlarging-camera. - Google Patents

Description

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, "ENLARGING GAMER-A;

APPLICATION FILED FEB. 25, 1-907.

2 SHEETS-SHEET 1.

"IIIIIIIIIIIIIIIIIIIIIIIII 4 QLERQING CAMERA.

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UNIIEnsTArEs ggnn'r OFFECEJ ROBERTKRO'EDEL, OF ROCHESTER, NEWYORK, ASSIGNOR To nAs'rMAn Ktmitctmriy,

, i NEW YORK, A CORPORATION OF. NEW YORK. i

I tatepf New York, have invente d certain new and; useful l mprovements in. Enlarging Cameras; and I do hereby declare the followlng-tobea full, clear, andexact descrip- -i'dQIl of the -same,- referen ce being had to the aaccompan ung drawings, forming a part of the speci cation, and v to the reference-numerals marked thereon. -My :present invention relates'pto photos -sgr-a h c cameras and-particularly to the'type wh ch are used for-the purpose of making enlithat is, rep

l arged prints or reproductions of negatives,

uctions having larger pro portion s than the original, and it has for its object to provide alight and efficient device ,5 ref .thisnature havingfew parts and those o f it):

a -construction permitting them to bere'adily idetachecl and packed in small compass for convenience in shipping or handling and as w easily restored oresscmbled from the knock -downstate. ;,Further-objects of myl'invenduction and the complexity of such devices tion areto materially reduce the cost of pro- 'i-,o -a;point t hich'they Will satisfy thereq'uirenients .ofoperators of inferior skill and mely be obtainable-by the-mat a'low price. othese and other ends the invention consists --certain" improvements and combinations of parts, allas :Will b'hereinaf-ter more ,iully explained, :the'novel features being pointed out inthe claims at the -end of the .5 Y s I slpe rsification;

c the drawings: Figureil is a perspective v-iew of an assembled camera constructed in accordance with in invention. Fig. 2 is a -longitudinalcentra vertical section thereof.

I no.

"Fig; 3is a'transverse vertical section on the "ispective-VieW Qfthe casing or body portion, and Eigs.g5, 6 and7 are -s1m1=lar views of each Q offltheremaining major parts, the figures being 'arrangedto" showthem on the sheet I y A" camera constructe 5 I ble tubular box or casing pro in accordance my invention embodies generall a collapse 'erably of a tapering" form; the-j-adjoming edges: of the faces of sides o'f'which'are hinged to permit of their being folded each against the other ;v

giirame. .removahly fittejdfto one ;-end thereof ENLARGING-CAMERA.

Specification of LettersPatent. Application filed February 25, 1907. Serial No. 359,074.

other Patented June'23, 1908.

for the reception of the negative or original; a similar frame at theother for the reception of the sensitized material upon, which the outline is to be reproduced; an intermediate -wall having a lens aperture and devices for holding the severalparts in position when assembled and preserving the rigidity of. the

structure as a whole.

Referring to the drawings, 1 indicates the tubular body or casing whichispreferably rectangular in crossv section and tapers toward one end. It is preferably formed of a series of sections composed of sheets of cardboard or similar light butsufficiently stiff material of roper sha e, each constituting one side of t e tube, w ichmay be conveniently hinged together at their proximate edges by a continuous covering of textile fabricor other pliable material 2 so that the casing may be folded at these points andcollapsed to the position shown in Fig. 4. To obtain a secure and light tight joint at the meetin of the free edges of the end sections when-t 1e device is assembled, oneof them is 'piplvided with a hinged flap 3 which is lapped 3.

over on the outside as shown inFigs. 1 an Over'the smaller end ofthe casing is fitted a removable rigid frame 4: provided on its rear or inner side with a channel or groove .5

sha ed to receive the ends of the sections,

sai channel being suitably enlarged to accoin'modate the flap 3 as at 6. This frame constitutes a holder for the negative or origi nal which, if flexible, is retained between two plates of lass 7 removably secured in a rabbet .8 on 't e outer side of the frame by the pressure of spring'iingers"or-buttons Q pivoted to the frame at ,10, or if rigid as for instance a photographic plate, thev other olatesmay be dispensed with, or it may' be eld b the su' erposition'of onlyone of them as wil-be un erstood; The frame may be conveniently held in place by hooks 11 pivoted to the body and engaging studs 12 thereon.- M

The opposite or large end of the body. portion-or casing fitssimilarly within: a 'roo've 13 on the inner side of a frame.14 whic may be removabl secured. in such position by a hook 15simi ar tothe fastening device of the The'sensitized sheet upon-which the print is "to -be made is held therein against a flange, formed by a rabbet 16, by a hinged door l7 seeuredin closed position by pivoted fingers or buttons. 18,-;or may he retained between such a door and a transparent plate 19 fitted to the rabbet. The door'is referabl formed of metal or other inflexib e materlal to insure an even or flat contact with the sheet and I have found that an efficient and cheap construction is obtained by making the body from a metal plate indicated by 20, Fig. 7, to the outer side of which is secured a flexible covering similar to the covering 2 of thebody, an extension 21 'of which is secured .to the upper part of the frame to 'formthe hin e connection while to the inner relation to each of the frames with reference to the .degree of enlargement desired and the length of the body is therefore proportioned accordinglyas will be understood. In the present instance, I have shown the screen and lens support as consisting of a wooden partition block rovided with-a central recess 26.within which the lens is held between a pair of rings or bushings,27. On one side thereof is a late 28 let into the block and provided wit anaperture 29in alinement with the axis of the lens, which plate performs the ordinary functions of a diaphragm in giving definition to the image. The screen is eld against movement lon 'tudinally of the body by-projections in the orm of cleats 3O staggered, one upon each of the sections forming the latter, so that they engage u on alternate sides of the screen inrotation w en the body is formed about it while an exterior bandor hoop 31' frictionally engaging the outer surface .is wedged down from the ght tight connection besmaller end of the body totheplane of the screen to insure a li tween the two. v V

The operation of the device is too obvious to require explanation, the manner of insert-,

ing the materials having been indicated dur ing the description of the parts, and the further operation of simple exposure to thelight being conducted as is usual. The construction and design herein set forth materially cheapen the cost-of manufacture and render devices of the kind available at amoderate price, for the simple uses of amateurs possessing photographic instruments of a relatively low grade.

M I claim as my invention:

1. In an enlar 'in camera, the combina tion with a tubu ar body portion formed of relatin integra ly throughout the length of the body, of a frame at one end thereof for holding edgesb said holders embodying a frame movable sections, eachextending' the original, a frame at the other for holding the sensitized material and a lens support located within said body portion intermediate the frames said frames and support being adapted to be folded, against one or more of the sections.

2. In an enlar ing camera, the combination with a tubu ar body portion composed of sections hinged at their lateral adjoinin edges, of a removable holder for the original at one end thereof, a removable holder for the sensitized material at the other, are- ,movable lens support located within said body portion intermediate the holders and means for preserving the tubular formof said body portion when the parts are assembled.

3. In an enlargin camera, the oombination with a tubular ody portion composed of sections hinged at their lateral adjoining means of a continuous covering of pliab e material, of a removable holder forthe original at one end thereof, a removable holder for the sensitized material at' the other, aremovable lens support located within said body portion intermediate the holders and means for preserving the tubuportion when the parts lar form of said body are assembled.

4. In anenlargin camera,"the combination with a later ly collapsible tubular body portion and a lens support located therein, of holders arranged at the ends of said body ortion for the reception of the original and the sensitized material respectively, one of said holders embodying aframe havmg a oove on the inner side thereof within which the end of the bod portion is fitted "to latter. 1

'5 In an enlar ing camera, the combination with a latera y collapsible tubular body 1portion and a lens'support located therein, of

olders arranged at t e ends of said body portion for the reception of the original and the sensitized material respectively, one of said holders being removable and embodying a frame having agroove on the inner side thereof within which the end of the body ortion is fitted to reserve the tubular orm of the latter an means for fastening the frame to the body portion.

6. In an enlar 'ng camera, the combination with a latera ly collapsible tubular body portion and a lens support located therein, of holders arranged at the ends of said body portion for the reception of the original and the sensitized'material respectivel one of avin a groove on the innerside thereof wit in which the end of the body portion is fitted, to

.preserve the tubular, form of the latter and a rabbet on its outer side for the reception of a plate and means for removably retaining a plate in said rabbet.

preserve the tubular orm of the sitized material and means orre-taining the latter in the frame embodying a door com- 7. In an enlarging camera, the combina tion with ii tubular body portion, a lens support located therein and a holder at one end thereof for'the original, of aframe arranged at the other endfor the rece tibn of the sen posedv of a plate having a non-abrasive v I covering on, lts mnerslde and a coverlng of flexible material on its outer side, said oute'r covering being extended beyond one edge connection the latter. p

8. In an enlarging camera' the combina; tion with a body portion' composed of secandfastened to the frame to form a hinge 'tions hinged vat their adjoining edges and v folded into a tubular form, said body being provided. with 4 inwardly-extending proj ec'- thins,- of removable holders at opposite ends thereof for the original and the sensitized Inaterial respectively and a lens supporting screen arranged within the body between the holders and engaged-upon opposite sides by the projections on the ody. Y

9. In an enlar g camera, the combina- -tion with a tub ar bodyor casingtapered toward one end and holders for the'orig'inal and sensitized material, respectively, at opposite ends, thereof, of a lens-supporting screen located" between the holders within the casing and engaging the latter on its inner side and a hoop wedged down from the smalla' end of the casing and fri'ctionally' engaging the outer surface of the latter to tighten' the contactbetween the screen and casing; v

10. In an porting-screen. located between the holderswithin the casing and engaging the-latter on its inner side an a hoop wedged down from the smaller end of the casingand frictionally engaging. the outer surface of the-latter to tighten the contact between the screen and. casing and preserve th'e- ,tubula r form of the latter.

1 1. tion of a latera y collapsible tube, rigid frames at opposite ends for the negative and sensitized material, "and means for claniping the sidesfin position.

12. In an enl ar 'ng camera, the combination of alatera y-collapsible .tube, rigid frames at opposite ends thereof, an intermediate perforated partition and" means for clamping the sides 'o ffthe vtube'upon the partition.

ROBERT KROEDEL.

Witnesses:

. RUssEL B. G RIFF'ITH,Y

WALTER B. PAYNE;-

In an enlar ng camera, the combinaenlarging camera, the combination with a collapsible tubular'body or'casing

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