US323590A - Burglar-proof safe - Google Patents

Description

(No Model.) 2 SheetsSheet 1.

H. P. NEWBURY.

BURGLAR'PROOF SAFE.

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(N0 Mod e1.) 2 Sheets--Sheet 2.

H. I. NEWBURY.

BURGLAR PROOF SAFE. No. 323,590. Patented Aug. 4, 1885.

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HENRY F. NEYVBURY, OF BROOKLYN, NE\V YORK.

BURGLAR-PROOF SAFE.

SPECIFICAT ON forming part of Letters Patent No. 323,590, dated August 4:, 1885.

Application filed Novembcrll, lFH. (No model.)

To all whom it may concern:

Be it known that I, .HENRY F. Nnwncnv, of Brooklyn, in the county of Kings and State of New York, have invented a new and useful Improvement in Burglar-Proof Safes and Vaults, of which the following is a full, clear, and exact description.

In burglarproot' safes and vaults the door (as is also the case with the walls of the structure generally) is made solid and massive, and the sliding bolts which hold the door in thelocked position are mounted upon the inner face of the door. These bolts are placed in this position in order to remove them as far as possible from the exterior of the structure, thus interposing between them and the tools of a bu rglar the entire thickness of the several plates composing the door. In this respect burglar proof work differs from ordinary fire-proof work, in which the bolts, instead of being secured to the inner face of the door, are arranged within the substance of the dooritself. To place the bolts of burglar-proof work in such position would not only diminish the strength of the door, but, as above indicated, would, by diminishing the distance between the bolts and the outside of the door, render the bolts more easily accessible to a burglar, everything lying behind the bolts affording no protection against the operation of the burglar.

The mode heretofore practiced for securing the bolts upon the inner face of the door of burglar-proof work has been to support them by what is known as the bolt-frame, which is composed of bars or kindred supports constructed separate from the inner sheet of the door, and then attached thereto by screws or bolts. The practical di'fiiculty connected with this mode of securing the bolt-work of aburglar-proof door to the inner sheet of the door is that the screws or bolts used to confine the bolt-frame in place are liable to be broken by a heavy shock, such as would arise from the firing of an explosive introduced into the interior of the safe or vault, (by methods well known to bu rglars,) or from the use of a small quantity of what are known as high or quick explosives against the exterior of the door. When the explosive is fired within the structl ure, the effect is to drive the door outward, and thus break or strip the bolts that attach the bolt-frame to the door. Vhen, again, a charge of dynamite or similar material is exploded against the exterior of the door, the intcnselysudden action of the explosive communicates great momentum to the boltwork of the door, and itis found that a small quantity of such explosive will suiiice to break or strip the bolts that hold such bolt-work to the door. The breaking of these bolts of course will permit the door to be swung open.

The object of the present invention is to remedy this defect in existing burglar-proof safes and vaults; and it consists, first, in so constructing the parts constituting the boltframeor, in other words, the bearings for the sliding boltsthat they will constitute an integral portion of the inner sheet of thedoor itself, instead of, as heretofore, being made separate,and then attached to such inner sheet by the use of bolts or similar devices; and it consists, secondly, in the, use, in. connection with this mode of constructing the bolt-frame, of an inner sheet so constructed as to have a bearing against one of the ledges of the jamb of the door.

The invention is illustrated in the accompanying drawings, in which Figure l is an inner view of the door of a burglar-proof safe, showing the relation of the bolts to the boltframe, and of the latter to the body of the door. Fig. 2 is a horizontal section of asafedoor embodying the invention, showing also the jarnbs of the door and a portion of the side walls of the safe; and Figs. 3 and 4c are sectional views illustrating special modes of constructing the bolt-frame and inner sheet of the door.

Referring to Fig. 1 more in detail, A is the inner sheet of the door; 13 B, the sliding bolts, and G O the bolt frame or hearings in which the bolts move. As shown in section in Fig. .2, the ribs that form these bearings for the bolts are cast solid with the inner sheet of the door, such sheet and its ribs being made, preferably, of steel, and this inner sheet is also rabbeted, so as to take against a shoulder or ledge formed upon the jamb of the door. This support of the inner sheet, being applied to all sides of the same, will be found of great advantage in strengthening the door against the shock arising from an explosive used against the outside of the door.

The door, as shown in Fig. 2, in addition to the inner sheet, is made up of several. layers of metal of different material, in the manner well known to constructors of burglar-proof work. The special selection and mode of unit ing these various layers or plates forms no part of the present invention, and plainly may be varied within reasonable limits, according to the judgment of the constructor.

Fig. 3 is a sectional View representing the inner sheet of the door, as the same may be made out of wrought metal to embody the in vention, the metal composing the sheet being in the process of construction thrown up into ridges or ribs in the manner indicated at D D, these ribs being afterward perforated to furnish bearings for the sliding bolts.

Instead of making the inner sheet of the door out of a continuous plate of wrought metal formed into ribs in the manner indicated in Fig. 3, it might be made up of parts, as indicated in horizontal section in Fig. 4, in which the flanges of the two lateral strips E E, would be welded orotherwise securely attached to the flanges of the middle part, F. By thus making the inner sheet of the door of three parts welded together, two vertical ribs will be formed, well adapted for a series of bolts sliding horizontally.

If it should be desired to use bolts shooting vertically as well as horizontally, bearings for such bolts could readily be provided by forming the three sections making up the sheet as shown in Fig. 4, with horizontal ribs, in the manner indicated in the description of Fig. 3.

It will be seen that a bolt-frame constructed in the manner above described, so as to form an integral part of the inner sheet of the door, cannot be detached from such inner sheet by any shock or explosion less than what would shatter and destroy the inner sheet itself. It will be seen, also, that when the inner sheet of the door is rabbeted, (it may also for a similar purpose be beveled or chamfered',) and thus given a bearing against the jarnb of the door, the security against the destructive action of explosives used against the outside of the door will be increased. Such bearing will relieve the strain that otherwise would be thrown upon the bolts, by means of which in burglar-proof work the inner sheet of the door is secured to the intermediate plates of the structure.

\Vhat is claimed as new is l. A burglar-proof safe or vault door having the frame or bearings for the door-bolts made integral with the inner sheet of such door.

2. A burglanproof safe or vault door having the frame or bearings for the door-bolts made integral with. the inner sheet of such door, such inner sheet also being extended sufticiently to have a bearing against thejamb of the door.

HENRY F. NEWBURY. Vitnesses:

Ronr. F. GAYLORD, Ron'r. H. DUNCAN.

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