US 378119 A
Description (OCR text may contain errors)
W. P. TROWBR-IDGE.
No, 378,119'. Patented Peb. 21. 1888.
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IVILLIAM I). TRCIVBRIDGE, CF NEW HAVEN, CONNECTICUT.
SPECIFICATION forming part of Letters Patent No. 378,119, dated February 21, 1888.
Application tiled October 17, 1857. Serial No. 252,515. (No model.)
To all whom i may concert:
Be it known that I, WILLIAM l?. TROW BRIDGE, a citizen oi' the United States, residing at New Havemin the county ofXevvIIaveu and State of Connecticut, have invented oertain new and useful Improvements in Protecterster Iostage, Revenue, and other Stamps, Court-Plaster, andlike articles having surfaces which are rendered adhesive by moisture; and I declare the following to be a full, clear, and exact description of the same, reference being had to the accompanying drawings, forming part of this specification, and to the letters and :figures of reference marked thereon.
When postage-stamps and like articles provided with gummed surfaces are carried in the pocket, it is found that suoli gum is rendered moist and adhesive by the heat and moisture of the body, thus causing the stamps to stick to each other or to the surfaces with which they may happen to bein contact. This is cspeciall y true during the moist andliot days of the summer months, and is the cause of considerable annoyanceand loss. Under such circumstances it is often found that the stamps will absorb the moisture from the atmosphere, and thus cause them to adhere to cach other, even though they are not carried in the pocket, but simply stored in some convenient receptacle.
To provide simple and effective means to avoid this difficulty is more especially the object of my present invention.
I have found that if the gumined surface of the stamp or other article be placed in contact with a suitably-roughened surface-as for eX- ample, the rough surface of ordinary sandpaper-all trouble from the adhesion of the stamp Will be entirely avoided even though the gunnned surfaces be appreciably moistcned. 1When such gummed or adhesive snri'aees are placed in contact With such roughened surface, the actual contact of any appre- 4 ciable area is prevented by the multitude of small points or proj ections which are presented to the gumined surface. No adhesion can there fore take place except at these points, the total effect of which is practically inappreeiable.
In the aoco mpanying drawings I have shown several forms in which my invention may be embodied.
Figure l represents, on an enlarged scale, the crossseetion of part of a stamp in contact with a roughened surface. Fig. 2 represents a simple case for carrying stamps in the pocket. Fig. 3 represents a similar case for carrying a larger number of stamps. Fig. 4 represents `an ordinary pocketbook or portnionuaie with a compartment provided with non-adhesive surfaces in accordance with my invention. Fig. 5 shows a form of case or book with nonadhesive surfaces for storing or transporting stamps in larger quantities.
The principle of my invention is illustrated in Fig. 1, in which A represents the crosssection of part of a postagestainp or other article provided with a gunnned or adhesive surface. This adhesive or gummed surface is protected by being placed in contact with a suitablyroughened surface, B. Though I may use for this purpose any material having a suitablyrough surface without departing from the spirit of my invention, I prefer to use ordinary sand-paper or other suitable material provided with a sanded surface. This sand-paper or other rough cned surface presentsa multitude of 7 small points or projections,pp, to the gummed surface of the stamp, thus preventing the contact of any appreciable area, and thereby avoiding the adhesion of the stamp or other article. Instead of the roughened surface used in this connection being provided with projections presenting` points to the contact of the adhesive surfaces, they may be provided with ridges or corrugations presenting their edges to the contact of the adhesive surfaces, thus in similar manner preventing the contact of any appreciable arca, and thereby the adhesion of the stamp.
In Fig. 2 I have represented a simple and convenient form of pocket book or case for carrying stamps. It consists, essentially, of a suitable book or case, C, of paper, leather, or other material. The inner surfaces, D, of this ease are suitably sanded or roughened, or else provided With sheets of ordinary sand-paper. The postage-stamps P are carried in this book with their adhesive or gummed surfaces in, contact with the roughened surfaces D.
In Fig. 3 I have shown a similar book or case, except that it is provided with extra leaves of sanded or roughened paper, thereby largely increasing the rcapacity of the book or case. Y
Fig. Il represents an ordinary pocketbook,
one compartment, F, of which is lined with sandpaper or other suitable material provided with a rcughened surface to prevent the adhesion of the postage-stamps. This lining may be made removable, or a simple book or case, as shown in Fig. 2 or Fig. 3, may be made of suoli size as to be conveniently carried in this compartment of the pocket-book.
In Fig. 5 I have shown a larger book or case, which may conveniently be used for storing or transporting stamps or other articles having adhesive surfaces in larger quantities. It con sists simply ofa large number ofsheets ofsandpaper or other material provided with a suitably-roughened surface, G, which are held to gether between covers I I by a suitable backing or fastening, H, somewhat like an ordinary hook. rlhe postage or other stamps are placed between the sheets of sand-paper G, which thoroughly protects them and prevents all adhesion of their gurnnied surfaces.
It will of course be readily understood that I can, Without departing from my invention, use such sheets provided with sanded or roughened surfaces without their being secured or fastened in any particularmanner. Thus I can fully protect stamps by simply packing them in sheets alternately with sheets of sand-paper in a boxer other convenient manner. The various devices which I have described are intended merely to illustrate a few convenient forms in which my invention may be embodied. Y
The method herein described of protecting postage-stamps and similar articles Will be made the subject-matter of a future applica-Y articles having gummed or adhesive surfaces,
provided with a series of sheets of suit-ably7A roughened material for receiving the contact of said gummed or adhesive surfaces, substantially as shown and described.
VILLIABI I?. TROVBRIDGE.
REDMOND V. BEALE, FRANoIs G. INGERsoLL.