Search Images Maps Play YouTube News Gmail Drive More »
Sign in
Screen reader users: click this link for accessible mode. Accessible mode has the same essential features but works better with your reader.


  1. Advanced Patent Search
Publication numberUS23343 A
Publication typeGrant
Publication dateMar 29, 1859
Publication numberUS 23343 A, US 23343A, US-A-23343, US23343 A, US23343A
InventorsHubbard Beebe
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Mode of preparing and mounting slates
US 23343 A
Abstract  available in
Previous page
Next page
Claims  available in
Description  (OCR text may contain errors)




Specieation forming part of Letters Patent No. 23,343, dated March 29,1859.

lio all whom it may concern.:

Be it known that I, HUBBARD BEEBE, ofthe city and county of New Haven, in the State of Connecticut, have invented a new and Improved Mode of Preparing and Mounting Slates, whether of stone or slated paper or wood, for use in schools, academies, and other institutions for educational purposes; and I 'do hereby'declare that the following is a full and exact description thereof, reference being had to the accompanying drawings, and to the letters of reference marked thereon.

The nature of my invention consists in the framing or mounting of school-slates, Whether of stone or of slated paper or wood, with a narrow band or rim of iron, copper, brass, tin, or other metal of suitable strength and tenacity, made hollow or grooved and closely tted to and around the edges of such slates, surmounted and covered by a border of vulcanized india-rubber or gutta-percha (either with or without a lining 0f cloth) extending over and around the edge or rim of vsuch slates to a suitable width on both sides thereof, the object being as well to secure a proper degree of stiffness to the slate, as to unite in the best manner in the framing or mounting thereof the qualities of strength, durability, beauty, and economy with noiselessness in use.

To enable others skilled in the art to make and use my invention, I annex also drawings with letters of reference thereon, an inspection of which, with the description herein given, will sufficiently exhibit the mode of framing or mounting slates which I claim as my invention.

Figure 1 represents the slate, (marked A,) whether of stone, paper, or Wood, with the metallic rim (marked B) thereon, ready for the framing or mounting of the vulcanized indiarubber or gutta-percha, (shown in Fig. 2,

marked 0,) which I find it best to prepale, as shown in Fig. 2, in a shape to correspond with that of the slate, Fig. l, for which it is designed, but of a size somewhat less, its elasticity being such that it can be easily extended and drawn over the edge or rim and iitted and adjusted so as to inclose the same to a sufficient depth on both sides thereof to constitute a suitable frame for the slate, as shown in the drawings, Fig. 3, letter C, to which it is then to be attached by some proper cement or glue. I use for that purpose seedlac varnish, a cement in common use and known among hatters under the name of tipstuff.

I do not claim the vulcanized india-rubber or gutta-percha, or anyiright to use the same without the license of the patentee thereof.

vWhat I claim as my invention, and desire to secure by Letters Patent, is-

l. The combination of a metallic band or rim and vulcanized india-rubber frame or mounting, with or without a lining of cloth, to the school-slate, whether of stone or slated paper or wood, substantially in the manner and for the purposes herein specified and set forth.

2. The application of the vulcanized indiarubber or gutta-percha frame or mounting, substantially in the manner herein described, without the metallic rim, to slates of stone or other material of suiiicient strength and stiffness to warrant its disuse in any case; but I deem it preferable in all cases to combine the two where durability as well as noiselessness is deemed important.


In presence of# RoGEE S. BALDWIN, SAM. C. BLACKMAN.

Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US2679700 *Apr 6, 1950Jun 1, 1954Urbain Leon FPortable display board construction
US5727952 *Jul 19, 1996Mar 17, 1998Classic Modular Systems, Inc.Edge-encapsulated writing board
Cooperative ClassificationB43L1/00