US1783467A - X-ray dental film package - Google Patents

Description

Dec. 2, 1930. GOLDACKEIR ET AL 1,783,467

X-RAY DENTAL FILM PACKAGE Filed Sept. 24, 1926 Patented Dec. 2, 1930 UNITED STATES PATENT OFFICE PAUL GOLDACKER AN D MAX SCHMIDT, GEDEESAU IN ANHALT, GERMANY, ASSIGNORS, BY MESNE ASSIGNMENTS, TO AGFA ANSCO CORPORATION, OF BINGHAMTON, NEW

YORK, A CORPORATION OF NEW YORK X-RAY DENTAL FILM PACKAGE Application filed September 24, 1926. Serial No. 137,587.

Our invention relates to packages of sensitized film prepared for use individually in dental X-ray work. The objects of our-in vention are to provide a package of this type which will be tightly sealed against the entrance of light, which will not become accidentally opened when submitted to moisture or other ordinary conditions of use, which Will be simple to manufacture and convenient to use, but which is at all times easy to open. Other objects will appear hereinafter. These we have obtained by the structure more fully explained hereinafter and particularly the use of a protective envelope consisting of a single sheet of material pervious to X-rays and impervious to visible light rays which is cut and folded in order to form a light tight package by means of a suitable adhesive applied.

Reference will now be made to the appended drawings in which the same reference characters refer to the same parts throughout:

Fig. 1 is a plan of the improved package;

Fig. 2 is a plan of the improved package the wrapping sheet being removed;

Fig. 3 is a section of the package as shown in Fig. 2 taken on the line XX of Fig. 2;

Fig. 4 is a plan of the wrapping sheet of the package unfolded.

The package shown contains a film 1 coated with silver halide emulsion. If it is spoken of as a film it is to be understood that we will not be limited to the use of one sheet of film only, but that the term a film comprises also the use of two sheets of film in the package as is well known in X-ray work. The film may be covered with one or several protective sheets 2 and 3 of paper or another material pervious for X-rays, which have substantially the same size as the film and may lie on opposite sides of said film. The film 1 with the protective sheets 2 and 3 is placed within a frame 4 of pliable, formretaining material, for example, lead wire and the whole is wrapped into a wrapping sheet shown in Fig. 4 of material pervious to X-rays but impervious to visible light rays and of a size greater than the film. The said wrapping sheet (Fig. 4) has two unequal portions, the sealing portion A and the wrapping portion B; The sealing portion A is substantially as broad as the film and has at'itsifree margins three strips 5, 6 and 7 of a waterproof adhesive while the narrow end is prolonged to form a manipulation protuberance 8 which is free from any adhesive. The wrapping portion B is broader than the part A and has three margin portions 9, 10 and 11 cut insuitable manner for being bent upward and inward.v There may furthermore be provided little protuberances 12, 13, 14 and 15 at eachof the four corners of the wrapping portion which will be bent upward and inward in the same way as the margin areas, in order to prevent the adhesive of the sealing portion from sticking to the inner elements ofthe package. The

wrapping portion may be cut in any suitable manner enabling the film to be wrapped readily. The film 1 within the frame l and with the protective sheets 2 and 3 lying on the front and rear side respectively is placed on the wrapping portion B (Fig. 1i) within the area marked in the figure by the dotted lines. The margin areas 9, 10, 11 are bent upward and inward over the aggregate formed by the film, the frame and the protective sheets. The sealing portion A is bent up along the line Y Y and downward on the portion B wrapped around the aforesaid aggregate. The sealing portion A adheres tightly to the margin areas of the wrapping portion B when a slight pressure is exerted on thead hesive areas of the sealing portion after the latter has been bent on to the wrapping portion. l

'When the package is manufactured, the sealing portion is put firmly in contact with the bent up margins of the wrapping portion and forms thus a perfectly light tight envelope for the whole.

The improved package described shows several advantages. (1) The manufacture of the package is very easy, since a single sheet is employed for wrapping as well as for sealing. (2) Because of the pliable, form-retaining frame surrounding the edges of the film it retains readily the form to which it may be bent in the patients mouth in order to obtain a true image of the position of the teeth. (3) It may easily be pulled open by seizing the manipulation protuberance provided. l) The package is tightly closed at all sides, one side being formed by the junction between the wrapping and the sealing portion Whilst the other three sides are closed by the three adhesive areas respectively. The presence of the waterproof adhesive along the sealing margins prevents the loosening of the sealing portion under the influence of the moisture of the mouth, so that the package will not be injured.

It will be understood that the form of package herein shown and fully described is to be considered as illustrative of one embodiment of our invention, and that we contemplate as within the scope thereof all such modifications and equivalents as fall within the scope of the appended claim.

Having thus described our invention, What we claim as new and desire to secure by Letters Patent is:

An X-ray dental film package comprising a film coated with silver halide emulsion, protective sheets of substantially the same size as the film and lying upon opposite sides of the film, a frame of pliable, form-retaining material lying around the edges of the film and a single wrapping sheet of material pervious to X-rays but impervious to visible light rays of greater size than the film and folded up into two portions covering the front and the rear side respectively of the assembly comprising the aforesaid elements, one of the said portions, the wrapping portion, having a protuberance at each of its four corners and margin areas projecting over the edges of the said assembly and being bent upward and inward on the latter Whereas the other of the said portions being the sealing portion and having substantially the same breadth as the said assembly is bent on that side of the latter, where the margin areas of the wrapping portion have been bent on, and is attached thereto as to form a light tight envelope for the whole by strips of a suitable waterproof adhesive extending at the free margins of the said sealing portion.

In testimony whereof we afix our signatures.

PAUL GOLDAGKER. MAX SCHMIDT.

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