US1597406A

US1597406A - Printing frame

Info

Publication number: US1597406A
Application number: US42477A
Authority: US
Inventors: Pauk William De
Original assignee: Individual
Current assignee: Individual
Priority date: 1925-07-09
Filing date: 1925-07-09
Publication date: 1926-08-24
Anticipated expiration: 1943-08-24

Description

Aug. 24 1'926. 1,597,406

W. DE 'PAUK PRINTING FRAME Filed July 9, v1925 Patented Aug. 24, 1926.

UNITED vsrATflas WILLIAM DE raux, or Los ANGELES, CALIFORNIA.

PRINTING FRAME.

Appucanonfnlea my a. 1925. serial No. 42,477.

\ My invention is a printing frame andr method of printingphotographs; and commain -franle members with a smoothing framex pivoted between the frames cooperating with a bead on one frame and a groove in the other so that the dodging tissue-paper mayfbestretched tight in order to perform the dodging operation thereon. The frame has ,a recess for thev plate or for a frame in whieh the platemay besecured and the dodging/ marks with a soft pencil to darken, (10mi-i166.: .tissue 150. lligfllenand putting .out pgntsiothe tissue may be readily donel by looking through the negative towards a source of4 light. v

.My ninvention as to .l the structure of the frame and the methodfof operation would be more' readily understood `from the following description and drawings in which;

Figure 1 is a perspective view of my frame` in its rclosed position illustrating a dodging tissue prepared for yprinting with a plate positienedthereon.

Fig. 2 visa cross section of Fig. 1 on the line22il1ustrating the cooperating main frames, clamping "fra-me. andk vco-acting bead and groove to draw the dodging tissue paper ig. 3 is a plan view of4 the frame wide open 'showing' the clamping frame in sections. f f

Fig liis a cross section on the line 4-4 of Fig.- 3 in the direction ofthe arrows, showing the three .element hinge.

The printing kframe comprises a lower open. frame 1, an upper openv frame 2 and tight.

a clampingvframe 3 between. y,These framesare all secured together by a single hinge 4 which are shown ywith straps 5 through which wood screws- 6 engage into the wooden frame members 1 and 2 and with a bead 7 bent around the hingeA pin 8 and holding the clamping frame Siu position. `.An upper andaJ lower hinge lis shown, but as many aswill be required to give `accurate alinement ywillloe used. f

Beads 9.are shown as formed kof a bent strip of metal withanges 10 and web 11 bent reversely at theweb, and are secured tosthe top and

bottom

12 and 13 and to the left y'and right sides 14 and 1b of the top frame 2. zThesey beads need notfmeet exact.

lfy at the ycorners and are preferably chamered or bevelled to a .sufficient extent to Jform an opening level with the vbottom of the clamping frame. It is preferable 'to have the flanges of the bead of the vsame thickness of Lmetal as the clampingk frame 3. A series of grooves 16 are formed in the bottom frame 1, forming slots kof thel same shape as the beads y9 yand forming 'afairly tight fit therewith.

The vupper frame 2-is yprovided with Va recess 317 .which a plate mayv be accurate- 1y .positioned 0r a printing frame mayfrbe inserted. InFig. 2*.aplatef18 andaprinting paper 19 'areI indicated positionedin the recess,17 anda printing frame 2,0v is indi-` catedby lthe dotted lines, held in placegby` any suitable fastener asf the thumbscrew- .21.. The ,means fonholdingthe negative vand printing paperv position may; be of v any suitable character Aor may ybe a` separate frameA entirelynso that I doznot wish to be limited to: any particular details.

The `manner .of inserting the tissue paper 1 in the frame isas follows:

.The frame wouldbeopen intheposition shownin fFig. Band a sfheetoftissue 4paper of la .suitablesize will vbe `inserted over vthe bottom frame. 1 after they clamping frame 3 hasbeentilte'dvflfully upward. The tissue paper; y.is designated .by lthe ynumeral, 22,-and

Awill pass over the surface of themetal tensioning frame 3 which is ay rectangular lmetal frame` With substantiallyl the same size.

opening as the, Amain franieandsecured to the bottomf'frameby`screwsf24n The clamplng frame willthen ,bel lowered over the paper softhat `it will occupy the position-,22 f underneath the clamping frame and the.

position 22" above the tensioning iframe. If the. paper is cutfslightly larger than the frame this allows `it v to be slightly stretched by hand,` otherwise it may be smoothedfand theweight of the clamping frame will hold it firmly `in position.

The top frame 2 lis. thennhinged, to bear downwards /onthe lower, frame so that the beads) ypress the paper into the grooves4 16 into the position shown by 22". This action;

stretches the paper forming a smooth drum like surface inthe opening of the frame. The .frame is ythen clamped in this position bylocking bar 25, kwhichis,y formed with a series of slots`26 engaging lieadedpins 27 secured to tliebottom frame and having bayonet slots 28 withopen ends 29 engaging.

headed pins 30 on the edge of the upper traine. 2r ring' or the like 3l is secured to one end oi" the locking har to manipulate it.

The method ol printing photographs by utilizing dodging tissue pai-er clamped in my trame is substantially as follows:

its above described, Fig. l shorts the longing tissue paper tightly clamped and drawn tight in the iraine with a plate 1S held in t e recess 1T. As is Well known, the objects oi dodging prior to printing photographs, is to tone down high lights or to lessen the density of snadoivs so that the details Will be brought out more clearly in the print. rlhese details may be suiliciently distinct in the negative but Will not show mccuratelj,v in the print. I may however, increase he brilliancy ot the high lights and also the density ot the shadows it desired.

I support the trame in any suitable manner so that the light shines through the paper and through the plate. Places Where it is desired that less light pass through than the plate Would transmit are darkened with pencil marks using a soft pencil as indicated by the numeral 82. Places to transmit still less light may have a heavier dodging mark or cross mark as indicated at 33. It more light is required than the tissue paper Would transmit it may be doped With material such as used for retouching negatives to gire greater translucency as indicated by the numeral 3a, the ordinary dope as sold by dealers in photograph supplies tor retouching negatives is satisfactory or an oil or shellac may be utilized to give increased transparency to the tissue paper. In portions of a picture which should have a still brighter light part of the paper may be cut away with a sharp instrument as indicated at 35.

It is apparent that these relative densities or' the dodging tissue paper may thus be utilized in printing to transmit more or less light in ,accordance with the Wishes of the operator and his skill in determining the correct amount of shading or increasing the transparency o1 the tissue paper. After the paper is properly prepared the photograph may be printed by placing a suitable printing paper over the plate clamping it in position and printing in the usual manner; or else a printing trame With a plate and printing paper secured therein may be held in the recesses 1T ot the upper frame.

l It is obvious that my trame may be utiliz/ed for printing from negatives which may readily be attached to glass by adhesive tape or held stretched across the recesses 17 with thumb tacks or the like. lith the use of my trame and tissue paper the corners of the paper may he marked and after printing folded and tiled a'ivay with the negative so that reprints may be obtained giving substantially a duplicate effect of the first iff claim is:

l. A. printi g' frame comprising in combination tc sioning Atrame having' a peripheral surface over which tissue paper may be drawn, a clamping frame positioned to fit on the outside ot the tensioning trame and adapted to grip the outer edge o't' the tissue paper, and means to hold a negative in proper position from the sheet of tissue paper smoothed hy tensioning and clamping iframes, whereby light may be transmitted through the paper and negative.

Q. A printing trame as claimed in claim l, having in addition a cooperating bead and a groove adjacent the said peripheral surface, adapted to stretch the tissue paper after clamping between the tensioning and clamping trames.

3. it printing trame comprising in combination a lower frame, an upper frame, a clamping Vtrame therebetween, said frame being open in the center, said clamping frame being adapted to engage a sheet oi' tissue paper between the lower peripheral surfaces thereof and the upper peripheral surfaces of the lower frame, and means in the upper trame to hold a negative at proper position from the sheet of tissue paper smoothed betu'een the clamping frame and the upper and lower frames, whereby light may be transmitted through the paper and negative.

i. A printing frame as claimed in claim 3, having in addition a relatively co-acting peripheral bead and groove adjacent the said peripheral surfaces, adapted to engage the tissue paper between the upper and lower trames and on the inside of the clamping trame to thereby stretch the paper* A printing frame as claimed in claim 3, having` in addition a tensioning trame attached to the lower frame surrounding its inner opening over which the tissue paper is adapted to spread when clamped by the clamping iframe, said tensioning frame engaging the paper and tightening same adjacent the periphery of the clamping frame.

6. A printing frame comprising in combination a lower frame, an upper frame, a thin clamping frame, said frames having alined openings therethrough, hinges securing said trames together, the lower frame having grom'es extending around the openings and inside of the opening' in the clamping frame, beads secured to the upper frame adapted to t the said grooves, whereby a sheet ot' tissue paper may be clamped between the clamping frame and the lower frame and stretched by pressing the beads into the grooves in the lower frame.

7. A printing frame as claimed in claim 6, having in addition means on the upper frame to retain a negative in adjusted position relative to a sheet of tissue paper stretched -in the frame. v

8. A printing frame as claimed in claim 6, having in addition a tensioning frame having a smooth surface attached to the lower frame and on the inside of the grooves and beads over which the tissue paper is adapted to be stretched.

9. A printing frame as claimed in claim 6,

having in addition a tensioning frame formed of smooth metal secured to the lower frame inside of the grooves and beads and having also a recess in the upper frame adapted to hold a negative.

10. A printing` frame as claimed in claim 6, in which the hinges have straps secured to the upper and lower frames, a. hinge pin retaining said straps in hinged relation and an eye secured to the clamping frame and occupying a central position on the pin between the upper and lower frames.

In testimony whereof I have signed my name to this specification.

WILLIAM DE PAUK.