US878639A - Concrete vault. - Google Patents

Description

BOYDEN KINSEY, or WYOMING, OHIO" CONCRETE VAULT.

To all whom it may concern;

Be it known that I, BOYDEN KINSEY, a citi zen of the United States of America, and resident of Wyoming, county of Hamilton,

State of Ohio, have invented certainne'w and useful Improvements inConcrete Vaults, of which-the following is a specification.

The object of my invention is a Vaultor safe which'is both fire and burglar proof. attainthis object by making the walls of a construction such that they cannot be penetrated by a tool to a sufficient depth for the insertion of explosives in the vault, and, likewise,by an arrangement of the reinforcing barssuch thatthey do not interfere with the monolithic character of the walls.

In the accompanying drawings, Figure 1 is a horizontal sectional view of avault embodying my invention. Fig. 2 is a sectional view of oneof the tool proof bars used in the walls, the view being taken upon a somewhat enlarged scale, showing its action upon the point of the drill which should strike in the.

direction otherwise than at a right angle to its surface.

The invention has been illustrated in a vault whose walls would be approximately fifteen inches in thickness. Within the con-- crete, A, near the inner surfaces, (1, of the Walls is laced a steel webbing made up of a series 0 equally spaced cold twisted steel bars, 13, in horizontal planes and. the same character of steel bars, C, placed vertically.

adjacent bar.

Aboutjour or live inches" from the outer faces; it, of the concrete, 1 have arranged a seriesof tool proof steel bars, D, at acute an glcs to the outer faces, (1 of the walls. The bars, 1), in a wall are arranged preferably in parallel planes so that the vcrticalplane cutting the end of one bar at right angles to the outcrfaccs, (1., would out also the end of an Bars, .l),are made preferably from live ply or chrome the plies (1, of this bar would be tool proof steel and the central and outer plies, d, of a softer steel. As is recognized in the art the hardened steel resists to a greater extent the passage of a tool, while the softer steel 1prevents the bar from being fractured by a b ow.

A space is leftbctwecn the last bar of a wall and the first bar of the intersecting wall,

so that there is enough room between these bars at the corner for the concrete. Beyond these adjacent barsin the corners a chronic Specification of Letters Patent. Application filed July 26.1907- $erial No. 385.665,

after strikinga bar,

steel, that is, two of- Patented Feb. 11,1908.

steel bar, I), is placed at an angle acute to the outer meeting faces of the walls. The concrete used in vaults of this character is veryhard and difficult to drill.

Should one attempt to penetrate a wall which the bars were arranged at an acute an 'le to the outer'face of the wall, and

shduld not start with his drill, E, at exactly a right an le to the'faces ofthe bars, the point, e, t i met the tool proof steel, d, since itf wo ld strike the same at an acute an le. The

chances of starting the tool in at rig t angiiis' ereof'would be turned it to the face of the bars where the ,angle is not known, are limited.

betweenbars' in =viewjof the difficulty of drilling this hardened concrete would render; difiicult to perform, since the farther the point of the drill is from itsq-a becomes the langer-of' ,j

the task one very shank, the greater breaking it.

The bars being spaced at distances apart and arranged with their angles overlapping The chances, likewise, of passing a drill between the bars. are likewise limited and in this instance, the great distance to be bored to passthrough the wall each other attains the object of limiting the chances of passing a tool through the wall while at the same time 4 it allowsa proper space between the bars for a the occupation of the concrete, so that the concrete .will have" a monolithic character,

which will prevent its being split intocracks.

What I claini-isz.

1.. A concrete vaulthaving arranged within its w ails a series of tool proof bars set at acute angles to the outer faces of the concrete walls.

2. In a concrete vault the combination of,

.concrete walls with a series of tool proof bars a ithin cach wall placc'd parallel to each otherat' a slight distance apart and at an acute angle to the outer faces of the concrete.

3. Ina vault the combination of a con-- crete wall, with a series of tool proof bars located therein andarranged at acute angles to its outer face and set at such a distance apart that planes perpendicular to the outerl cut the ends ofthe face of the wall ivou adjacent bars. v

BOYDEN KTNSEY? Witnesses:

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