US131699A

US131699A - Improvement in bolts for safe-doors

Info

Publication number: US131699A
Authority: US
Publication date: 1872-09-24
Anticipated expiration: 1889-09-24

Description

LJH. MILLER; Improvement vinBolls for Safes, Uoors,'&c. No. 131,699.

`Pa'tented Sep. 24, 1872*.

I NVENTO R.

fl l" v W ITN ESSESQ Qur. f/foN-L/maaRl/w/a cam: fasaamvss fmwrssj UNITED-STATES LUEE H. MILLER, or BALTIMORE,MARYLAND.

To all whom it may concern:

Be it known that I, LUKE H. MILLER, ot the city of Baltimore, Maryland, have invented a new and Improved Method of Fastening the Doors of Fire and Burglar Proof Safes, Vaults, 8vo., of which the following is a speciication:

Nature and Objects of the Invention.

My invention relates to bolts in the form of screws, which, in fastening the door, are made to enter corresponding threaded apertures in the door-frame of the safe or vault, so as not only to hold the door usecurely shut but to prevent the possibilty of spreading or springing any part of the frame, either by violence in a fall or by the 'application of a wedge, jack, or other implement in the hands of a burglar. My lnvention consists inthe combination `with such screw-bolts,`arranged in one" or more radial groups with three or more bolts 1n each group, of a single check-lock, arranged to throw its bolt or bolts centrally between them, to prevent their retraction, as hereinafter specified.

Description of the Accompanying Drawing.

Figure lis a front view of a safe with the door open, exposing the rear or inner side of the door, a portion ofthe door-frame being shown in section; Fig. 2 is a horizontal section ofthe same on the line c: a', Fig. 1. Fig. 3 is asection of one of the bolts and its attachments.

General Dcscwptfion'. A may represent the door-frame of a safe or vault,`with threaded sockets B, for the reception of the door-bolts, and with the hinges G (l, by which the door D is hung. v E E represent the door-bolts. These are formed with screw-threads working within correspondingi of feathers f in the pinions working in grooves e, or by forming the ends of the bolts and the apertures of the pinionsLwithin which they fit, in square or other non-circular shape. The pinions F F are preferably beveled, and two, or three, or more of them may gear with a pinion, G, keyed upon the shaft H, which is rotated by an external knob, I, in order to impart 4the necessary rotation to the bolts to throw them -in or out.

In the present illustration I have shown three screw-bolts arranged in the upper part ofthe door, and three in the lower part of the door, which latter three may be operated by a separate knob, shaft, and pinion, I H G. The lock J may be of any suitable construction. I have here illustrated it as described in Letters Patent heretofore granted to me, so as to be operated by a gear-wheel, K, and a spindle external to the mechanism of the lock itself. This or any other kind of lock which may be used, is. adapted to throw its bolts behind or between the inner ends of the door-bolts E, when the latter are projectedV into their sockets within the door-frame.

In the illustration given in Fig. 1 the door being open, the door-bolts E and lockbolts L are, ofcourse, all retracted. If, now, the door be closed and the knobs I rotated in-the proper direction, the door-bolts E, turning freely within their sockets d, will be made to project from the edges of the door and enter the sockets B of the frame A to the necessary distance. The lock-bolts L; being then thrown out in the usual way, will be interposed between the inner ends of the bolts E and effectually prevent the retraction of the said bolts.V

From the above description it will appear that-the bolts work in threaded apertures in both thedoor and the doorframe, so as to hold the two firmly together, not only against the opening ofthe door, but against any possible spreading of theV frame, so thatwhile the door is shut andlocked, the entire door and frame are iirlnly screwed together, and may havev as great strength as if formed in one solid piece.

In the present illustration the lock shown in the center of the door may represent a check-lock operating two bolts up and down, or any other lock for checking the screw-bolts can be used according to the space available and other conditions, precisely as in the ease 0f the t'. n 1111011 SUIOOI bolts.

The invention is adapted for all burgarproof work, either in portable safes or in vaultdoors, or any other appliance Where such security is required. Y

Claim.

l What I claim as new in this my invention 1s The serewboits E, arranged in a radial group or groups of three or more, in combination with a cheek-lock, J, adapted to throw its bolt or bolts between their inner ends and thus prevent their retraction, as herein shown and described.

LUKE H. MILLER.

Witnesses WM. D. MILLER, Jr., CRAs. H. JONES, M. D.