US1172072A - Light-proof retainer for films, plates, or sensitized photographic material. - Google Patents

Description

Patented Feb. 15, 1916.

E. B. STOTT.

LIGHT PROOF RETAINER FOR FILMS, PLATES, 0R SENSITIZED PHOTOGRAPHIC MATERIAL. APPLICATION FILED SEPT-30,1914.

Tm: COLUMBIA PLANOGRAPH C0.. WASHINGTON. D. L.

WITNESSES EDWARD BOYLE STOTT, OF NEW YORK, N. Y.

LIGHT-PROOF RETAINER FOR FILMS, PLATES, OR SENSITIZED PHOTOGRAPHIC MATERIAL.

Specification of Letters Patent.

Patented Feb. 15, 1916.

Application filed September 30, 1914. Serial No. 864,201.

1 0 all whom it may concern Be it known that I, EDWARD B. S'ro'r'r, a citizen of the United States, and resident of the borough of Brooklyn, county of Kings, city and State of New York, have invented certain new and useful Improvements in Light-Proof Retainers for Films, Plates, or Sensitized Photographic Material, of which the following is a specification.

This device is intended as a means for assisting in the day light handling of photographic plates or cut films or other sensitized material and it has for its object the production of a means whereby such plates or films may be placed in a plate holder at any time, or place and without the necessity of the employment of a dark room and subdued or colored light.

In utilizing my invention I employ a plate holder of ordinary construction but one wherein the shutter or blind, as it is sometimes called is omitted, and it may be possible that I will advise the use of a single plate holder or one adapted to receive but one plate for as the specification advances it will appear obvious that the use of a double plate holder or one holding two plates opposed will have but little advantage for the reason that the plates or films may be placed in and removed from the plate holder so rapidly and with so little manipulation that a double plate holder will be quite unnecessary.

The advantages to be derived from the use of my device and the general construction of the device will be set forth as the specification advances.

The following is what I consider the best means of carrying out this invention.

The accompanying drawings form a part of this specification, in which Figure 1 shows in front elevation an ordinary plate holder with my device in operable position therein. Fig. 2 shows my deyice alone, the fractures disclosing to view the position of the several parts. Fig. 3 shows the metallic guide portion.

Similar reference numerals indicate like parts in all the figures where they appear.

In connection with my invention I have shown an ordinary plate holder as indicated at 1. This plate holder, the construction of which is well understood, requires little or no change for the accommodation of my device, and the principal differences between this and a plate holder of common use are that the front slidable shutter or blind is omitted and the light-stop is so arranged that a blind may be inserted outward or inward from the plate retaining recess. My device consists of an envelop or wrapper in which a single plate is to be received and it is my intention that the wrapper shall be placed about the plate during the course of the manufacture of the plate and that all of the subsequent operations of shipping, vending, exposing and developing of the plate shall be accomplished without its removal from the wrapper. Therefore it will be seen that it is my intention that the wrapper shall be cheap and simple in construction and that it will add so little to the cost of the plate that it may be thrown away after a negative has been produced.

My device consists of a paper envelop or container as indicated at 2, the back of which is complete and the front edge of which overlaps the plate only to the extent indicated at 3 and 4. This member, which may be termed a pocket may be formed from paper and the edges of the two sides and top may be closed, the lower edge however should be open so that a plate may be inserted therein.

lVhen a plate is placed in the envelop or pocket 2, the pocket is inserted longitudinally into the guide member 5 which may be of metal but which should be thin and light. It will be noted that this uide member has overhanging edges as in icated at 6, and that the back is omitted. When the envelop or pocket 2 is inserted into the guide member 5 I place a slitted end piece 7 in position over the pocket and over the upper end of the guide member. This end piece is provided with a longitudinal slit, and within the slit I arrange a light-stop as indicated at 8 and 9. This stop which may merely be two lengths of velvet or other suitable material bears fairly upon the opposite faces of a shutter or blind 10. The blind is in serted through the slit in the end piece 8 and downward between the edges 6 of the guide member 5 and across the overlapping edges 3 and lof the envelop or pocket 2.

From the construction as described it will be noted that I have produced a light, cheap and efficient light-proof holder for aplate. When it is desired to use the plate, the holder and plate are placed in an ordinary plate holder in the manner long employed in handling photographic plates not provided with my device, with the exception that it is not necessary that a dark room be employed, or that a subdued light be required and with a further exception that the upper end 11 of the shutter 10 be passed outward through the light-stop of the ordinary plate holder.

When the plate and my device are in the position in a plate holder as shown in Fig. 1, the operator proceeds to make an exposure in the ordinary manner using my blind or shutter 10 just as he would use the blind or shutter with which ordinary plate holders are equipped. After the exposure the blind 10 is replaced, the plate holder removed from the camera and my device and the exposed plate removed from the plate holder.

From the operation as described it will be fully appreciated that only one plate holder is required for the exposure of any number of plates when the plates are fitted with my invention, and as my devices add but little to the weightof a plate or to the bulk thereof a number of plates may be carried with no further'labor or inconvenience than has in the'past been required for out few plates.

It will be noted then that my device offers the advantages of a reduction in weight and a reduction in bulk added to the convenience of the daylight loading of plate holders. There are however other advantages such for instance as that of avoiding the possibility of fogging the plates which so often occurs when a sensitized plate is transferred from the original wrapper, box or package to' the plate holder, for even thougha dark roombe utilized at this time it often happens that a highly sensitive plate will fog, possibly from the surrounding atmosphere or from the heat of the hand of the operator.

Another advantage and one of no little importance rests in the development of the plate. I intend that my device shall be made from material that will not be affected by or that will not affect the developing chemicals and therefore to develop the plate it will not be'found necessary to remove it from the envelop or pocket. The shutter may be removed and the remainder of the device may be placed in the developer. The protective edges will theniserve as a means by which the plate may be handled and they will also serve as a means for separating the plates one from another, this in the ordinary method. When however a developing box is used the plates with my inclosing device may be placed in the kit, the kit arranged in the developing box and the slides or blinds re moved just after the introduction of the developer.

I desire it understood that modifications may be made within the scope of the appended claims without departing from the principle or sacrificing the advantages of this invention.

My device may be made wholly of card board, paper or. any other suitable material or it may be constructed from a combination of materials that will answer the purposes intended.

I have shown my device rectangular in shape but I desire it understood that it should be of a shape to conform and fit closely to the edges of a plate,film or other sensitized member of any general outline.

I have described my device as operating in connection with photographic plates but I desire it understood that cut films, sensitized paper, or any other material of a similar nature, or any material usedfor a like purpose may be advantageously handled in connection with my invention.

Other changes may be made.

Having carefully and fully described my invention what I claim and desire to secure by Letters Patent is 1. A light proof retainer for plates, films and the like, consisting of an inclosing envelop for said plate, one end of" which is open, a' reinforcingmember adapted to re ceive said envelop extending along two sides and across one end and to close the open end, thereof, and a shutter operable therewith to be withdrawn While making an' exposure.

2. A light proof retainer for plates, films or the like, having in combination with an ordinary plate holder, an envelop having both ends-and front open, for inclosing said plate, and a shutter operable therewith and adapted to be inserted outward through said plate holder as and for the purpose'set forth.

3. A device of the character described comprising an envelop of'light proof material, a sensitized plate secured therein, a guide member for receiving said envelop, reinforcing the two longer sides thereof, and closing one endthereof, an endpiece, and a shutter operable therewith all combined for joint operation as and for the purpose set forth.

4t. A device of the character described adapted to assist in the daylight handling ofvelop, and a removable shutter for said plate, said guide member guiding said shutter in its operation as herein specified.

5. A device of the character described comprising a metallic guiding member one member and provided with a light stop through which said shutter is adapted to operate as, and for the purpose set forth.

Signed at New York city, in the county 15 and State of New York this 17th day of end of which is open, a fibrous envelop slid- Sept, 1914- ably engaged within said member a shutter adapted to operate between said elivelop and EDWARD BOYLE STOTT' said guide member, and a second metallic Witnesses:

member secured to said envelop and adapted G. E. STERRETTE, to receive the open end of said first metallic ARTHUR PHELPS MARR.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. 0.

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