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Publication numberUS106324 A
Publication typeGrant
Publication dateAug 16, 1870
Publication numberUS 106324 A, US 106324A, US-A-106324, US106324 A, US106324A
InventorsCharles T. Chester
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Improvement in protecting safes and vaults from burglars
US 106324 A
Abstract  available in
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Claims  available in
Description  (OCR text may contain errors)


'N0.106,3Z4. Patented Aug. 16, 1870.

theta stale m can.

CHARLES T. onnsrnn, OF ENGblilwogg lflgljjggslilg Letters Patent N 0. 166,824, dated August 16, 1870.


The Schedule referred to in these Letters Patent and making part of the saute.

I, CHARLES T. Grinsrnu, of Englewood, Bergen county, New Jersey, have invented certain Improvements in the Protection of Safes and Vaults from Burglar-s, of which the following is a specification.

1 am aware that devices have been applied to houses and vaults for the purpose of breaking and closing electrical circuits, the eifect of which is to ring a hell .or sound an alarm at a place more 'or less remote from the point" of entrance. Thus doors and windows have had such attachments made to them, that, upon altering the position of these. attachments, a' circuit is closed. But the object of my invention is to secure a safe, vault, or chamber containing valuables, from the inroads of burglars, who have frequentl y entered such places by knocking a, hole through iron or masonry of which the sides .or floor of the vault are composed. v

lgpropose, therefore, to cover every portion of such wall or floor or roof with a net-work of wire or other electric conductor, so woven into textile fabric, or 'imbedded in wood or plaster, or any other material, oi whiclrthe interior or egterior covering of such vault, safe, or'chambermay be composed, that, if an attack is made at any part of such protected place, the violence of the blows, or the cutting effect of the tools used, shall rupture the electrical conductivity, and act on any of the well-known means of causing an alarm by ringing bells or tripping machinery.

This electric appliance or attachment may be made in various ways. The conductor maybe buried in a wooden panel to be affixed to the safe, care being taken that the attachment from one panel to another is electrically perfect, and at each such'junction provision may be made for a test of the soundness and completeness of the whole conductor, or the special section of conductor embraced in the special panel 01 side of the vault, safe, or chamber, in familiar to electricians.

the usual way a The conductor may be buried in rubber-cloth or between sheets of thick paper, or behind common wallpaper, or in very many ways which would be suggested as applicable to different positions where the,

electrical protector may be required.

I do not confine myself to any particular mode of carrying out the protection. vIn the construction. of the fibrieliningor cover,-the electrical conducting 7 lines may be rnnat various distances.

Referring to the drawing- The square spaceF O D 0 represents a panel or entire side of a safe.

The conductor entering at A proceeds alternately downward and upward continu'ously,'and in the same plane, emerging at B. at which place itconnects with the adjoining conductor of the djoining panel or side, top, or bottom of the safe, vault, or chamber.

"he spaces between these adjoining lines ofcondoctor may be variedin size, thus protecting. against various sizes of hclesthat may be made in the structure, in one place the attack anticipated being the introduction of powder, in another the introduction of the burglar himself, as through the. ceiling of a room below the safe or vault.

Without confining myself to any particular size of space between conductors, nor to any particular fabric or structure in which it may he imbeded,

I claim as my invention- A continuous electrical conductor imbedded in the interior or exterior covering of a vault, safe,'or room, which, when ruptured, will produce an electrical alarm in the. usual manner.



S. A. Srnssms; Van ZANDT DAMES.

Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US4234875 *Mar 6, 1978Nov 18, 1980Sandstone, Inc.Security structure
Cooperative ClassificationG08B13/126