US2402765A

US2402765A - Developing rack

Info

Publication number: US2402765A
Application number: US526890A
Authority: US
Inventors: Millman Herman
Original assignee: Individual
Current assignee: Individual
Priority date: 1944-03-17
Filing date: 1944-03-17
Publication date: 1946-06-25
Anticipated expiration: 1963-06-25

Description

June 25, 1946. H. MILLMAN DEVELOPING RACK Filed March 17, 1944 2 Sheets-Sheet 1 k a 4 r IIU Z 0 a M 3 M K VH. 4 Us INVEN TOR. brwwzaz/fflllrrzan June 25, 1946. MILLMAN 2,402,765

DEVELOPING RACK Filed March 17, 1944 2 Sheets-Sheet 2 YINVENTOR.

T 5 BY gamma/$16M "fi- ATTORNEY Patented June 25, 1946 DEVELOPING RACK Herman Millman, New York, N. Y.

Application March 17, 1944, Serial No. 526,890

Claims.

This invention relates tonew and useful improvements in a developing rack for direct positive photographs and the like.

More particularly, the invention proposes an improved rack characterized by a frame-like member having a plurality of groove-like passages in which strips of photographs and the like may be supported. It is proposed to provide means for closing one end of said member for holding said strips of photograph in position. It is further proposed to mount a handle on the other end of the member by which tlle developing rack may be dipped into developing fluids.

The invention proposes various modified forms distinguishing from each other in the details of construction of the frame-like member, in the claims in which the various novel features of the invention are more particularly set forth.

In the accompanying drawings forming a ma terial part of this disclosure:

Fig. 1 is an elevational view of a developing rack for direct positive photographs and the like constructed in accordance with this invention.

Fig. 2 is a side View of Fig. 1.

Fig. 3 is a horizontal sectional view taken on the line 3-3 of Fig. 1.

Fig. 4 is a bottom view looking in the direction of the line 4-4 of Fig. 2.

Fig. 5 is an elevational view of a developing rack for direct positive photographs constructed in accordance with another form of this invention.

Fig. 6 is a side view of Fig. 5.

Fig. '7 is an enlarged horizontal sectional view taken on the line 7-1 of Fig. 6.

Fig. 8 is a front elevational view of another demembers l5 which are alternately placed with their side walls directed rearwardly and forwardly and which are connected together in a rigid unit by soldering, brazing, welding or other method. The groove-like passages ll comprise the opposed side walls of the inwardly directed channel-like members l5.

One end of the frame-like member I0 is closed for holding the photographic strips, indicated by the dot and dash lines l2 from falling out. This closure means comprises strips l6 mounted across the bottom ends of the channels IS. A handle ii is attached to the other end of the said framelike member I0 and more specifically, upon the top end of one of the walls l3 thereof.

The operation of the developing rack consists merely in sliding a plurality of direct positive photographs and the like indicated by the dot and dash lines l2 in Fig. 2, into the groove-like passages l I. The rack disclosed in the drawings is capable of receiving and holding six of these photographs. The rack may then be supported by the handle I! and lowered into developing, fixing and washing fluids. A feature of the rack construction resides in the fact that the person working on the photographs will not wet his hands.- Moreover, the photographs will be suitably spaced from each other so that their emulsions do not stick together.

In Figs. 5-7lanother form of the invention is disclosed which is very similar to the prior form, distinguishing merely in the details of construc tion. In this form of the invention the developing rack includes a frame-like member 20 having a plurality of passages 2| in which strips of photographs, indicated by the dot and dash lines 22, may be engaged. The frame-like member 20 is formed from a plurality of parallel and spaced wire frames 23. These wire frames are held in parallel spaced positions by spacer strips 24 atveloping rack constructed in accordance with still another form of this invention.

Fig. 9 is a side view of Fig. 8.

Fig. 10 is an enlarged horizontal sectional view taken on the line Ill-Ill of Fig. 9.

The developing rack for direct positive phototached to their sides.

The wire frames 23 have their side arms 23 closer together than the width of the photographic strips 22 for forming the passages 2| in which the photographic strips 22 may be engaged. At points, these side arms 23 are formed with bellied-out sections 23'. It is across these belliedout sections 23 that the spacer strips 24 are attached to the wir frames 23 for holding them in relatively fixed positions. The purpose of the bellied-out portions 23 is to permit the photographic strips 22 to pass in between the spacer strips 24,

The frame-like member 20 has one end closed for supporting said strips of photographs, This end is closed by a strip 26 mounted across the bottom ends of the wire frames 23. A handl 21 is mounted on, the other end of the frame-like member 20. More specifically, this handle 2'lis formed from two wire sections. There is a hook section 28 which is attached upon a frame-like section 29. These handles are attached upon the top end of the frame-like member 20, specifically, up n one side.

The developing rack is used in the identical fashion described relative to the first form of the invention. The photographic strips 22 are slipped into the groove-like passage 2|. and then the rack is supported by the handle 21 and lowered in the respective fluids. The hook 28 may be used to hook the rack on a supporting object.

n Figs. 8-10 still another form of the inventi %1 is disclosed which is very similar to the prior fo m, distinguishing merely in the fact that additional wire frames may be added to produce additional passages, or wire frames may be taken away when they are not wanted. More specifically, this developing rack comprises a frame-like member 30 havin a plurality of passages 3| in which strips of photographs 32 may be engaged. The frame-like member 30 is formed from a plurality of spaced wire frames 33, These wire frames 33 are held in spaced positions by bolts 34, upon which a plurality of spacer washers 40 are mounted. The bolts 34 are provided with nuts 4| for holding the spaced wire frames together as a unit.

Each of the wire frames 33 have side arms 33* s aced together a distance less than the width of the photograph strip 32 so as to support the hotographic strips along their side portions. Each of the side arms 33' is formed with several bellied-out portions 33 in the nature of loop portions through which the bolts 34 are engaged.

The bottom ends of the spaced \vire frames 33 are formed with loop portions 33 through which a bolt and nut 36 are mounted. This bolt and nut are provided with spacer washer 40 between the wire frames 33, The bolt and nut 36 close the bottom ends of the bottom passages 3 I.

A handle 31 is mounted upon the top of the frame-like member 30. This handle 31 includes a pair of hook portions 38 b which the rack may be hooked upon the side of a tank or other place. The handle 31 also includes a loop portion 39 which may be conveniently gripped. Preferably, the loop portion 39 is formed by continuing the adjacent wire frame 33 and twisting and forming it into shape. The hook portions 38 are soldered, welded or in any other way attached to the rack.

The dominating feature of this form of the invention resides in the fact that the nuts 4| may be removed and some of the wire frame 33 removed, or additional similar wire added for the purpose of changing the number of passages 3|. which changes the number of photo raphs which the rack may accommodate. In other respects the operation of this form of the invention is identical to the previous forms.

While I have illustrated and described the preferred embodiments of my invention. it is to be understood that I do not limit myself to the precise constructions herein disclosed and the right is reserved to all changes and modifications coming within the scope of the invention as defined in the appended claims.

Havin thus described my invention, what I claim as new. and desire to secure b United States Letters Patent is:

1. A developing rack for direct positive photographs, comprising a frame-like member having a plurality of passages in which strips of photographs may be supported. means for closing one end of said member for holding said strips of photographs, and a handle mounted on the other end of said member, said frame-like member comprising a, plurality of parallel and spaced wire frames having sides spaced closer than the width of said photographic strips, said sides having bellied-out portions, fastening members engaged through and mounted on said bellied-out portions, and spacers for said frames mounted on said fastening members.

2. A developing rack for direct positive photographs, comprising a frame-like member having a plurality of passages in which strips of photographs may be supported, means for closing one end of said member for holding said strips of photographs, and a handle mounted on the other end of said member, said frame-like member comprising a pluralit of parallel and spaced wire frames having sides spaced closer than the width of said photographic strips, said sides having bellied-out portions, fastening members engaged through and mounted on said bellied-out portions, and spacers for said frames mounted on said fastening members, said fastening members comprising bolts and nuts.

3. A developing rack for direct positive photographs, comprising a frame-like member having a plurality of passages in which strips of photo graphs may be supported, means for closing one end of said member for holding said strips of photographs, and a handle mounted on the other end of said member, said frame-like member comprising a plurality of parallel and spaced wire frames, the side arms of said wire frames being spaced closer than the width of said strips of photographs, said side arms having bellied-out portions forming loops, bolts and nuts engaged through said loops, and spacers mounted on said bolts for holding said Wire frames in their spaced positions.

4. A developing rack for direct positive photographs, comprising a frame-like member having a plurality of passages in which strips of photographs may be supported, means for closing one end of said member for holding said strips of photographs, and a handle mounted on the other end of said member, said frame-like member comprising a plurality of parallel and spaced wire frames, the side arms of said wire frames being spaced closer than the width of said strips of photographs, said side arms having bellied-out portions forming loops, bolts and nut engaged through. said loops, and spacers mounted on said bolts for holding said wire frames in their spaced positions, the bottom ends of said wire frames having loops, and a bolt and nut engaged through said loop and comprising said means for closing one end of said member.

5. A developing rack for direct positive photographs, comprising a frame-like member having a plurality of passages in which strips of photographs may be supported, means for closing one end of said member for holding said strips of photographs, and a handle mounted on the other end of said member, said frame-like member comprising a plurality of parallel and spaced wire frames, the side arms of said wire frames being spaced closer than the width of said strips of photographs, said side arms having bellied"- out Portions forming loops, bolts and nuts engaged through said loops, and spacers mounted on said bolts for holding said wire frames in their spaced positions, the bottom ends of said wire frames having loops, and a bolt and nut engaged through said loop and comprising said means for closing one end of said member, said handle comprising hook portions and a loop portion.

HERMAN MIIILMAN.