US981308A - Explosive burglar-alarm. - Google Patents

Description

B. RBICHENBA'GH.

EXPLOSIVE BURGLAR ALARM.

APPLICATION FILED JUNE 16, 1910 981,308; Patented Jan. 10,1911.

Z n ,1; 6 A

I, II

.52.. "mum",

, ceases.

EDWARD REICHENIBACH, OF JEFFERSON, WISCONSIN.

EXPLOSIVE BURGLAR-ALAR1VL Application filed June 16, 1910.

Specification of Letters Patent.

Patented Jan. 10, 1911.

Serial No. 567,207.

To all whom it may concern:

Be 1t known that I, EDWARD REICI-IEN- BACH, a citizen of the United States, residing at Jefferson, in the county of Jefferson and -State of Wisconsin, have invented certain 7 opened by anintruder.

One object of the invention is to provide a gulde-tube to be attached to a door and t0 loosely inclose a cartridge carrier sustalned on the door-frame, whereby when the door is opened by an intruder the cartridge-carrier will be released and will slide out of the guide-tube and by the latter be directed in falling so as to avoid hitting the door, or

tilting while falling to the floor.

The invention consists of an improved construction and combination of the several parts of the cartridge alarm so organized as to prevent failure of action.

Referring to the drawing, Figure l is an inner side view of an upper corner of a door and doorframe showing the position of the alarm device relative thereto. Fig. 2 shows on a larger scalean edge-view of the door, a section-view of the door-jamb, and a side view of the alarm device secured in position. Fig. 8 shows a vertical section of the tubular guide and a side view of the cartridgecarrier in position within the guide. Fig. i is a vertical section of the cartridge-carrier separated entirely from the tubular guide, and the cartridge holder within the carrierthe parts being in position ready for the eXplo sion. Fig. 5 is a top view of the tubular guide.

Referring to the drawing the cartridge guide-tube is to be attached on the inner side of the door near the upper corner; the letter, A, designates the tube open at both ends; at its top is a laterally-projecting flat arm, 6, having at its end a catch-prong, 0, which is adapted to be pressed into the t-opedge of the door, D. At the lower end the guide tube has a lateral flat foot, 6, which contacts with the inner surface of the door. By this formation of tube, broad catch prong, and lateral foot, the guide-tube stands away from the door and will be held steady and free from wabbling or moving out of place when the door is opened; furthermore this manner of attaching the tube avoids defacing the door. The guide-tube is smooth interiorly and has no inside obstructions; it serves as a guide or chute to give proper downward direction to the cartridge-carrier as the latter slides out. This tube, A, may remain on the door at all times, if desired, and the cartridge-carrier may be put in place loosely within the tube, but supported on the door-frame when it is desired to set the alarm in readiness for action.

The cartridge-carrier, F, is cylindric in shape and its lower end is closed by a solid metal plug or head, g, on the inner side this plug has an upward-projecting firing-pin, h. The upper end of the cartridge-carrier cylinder, F, is open, and the wall of the cylinder has a spring-stay or catch, 2', to retain in place the cartridge holder, J, when the latter has been set. This spring device, 2', in the present instance, is carried on the free end of a tongue, 2' on the wall or may be cut from the metal of the wall of the cartridge carrier.

The cartridge carrier when set for action is to be suitably supported from the doorframe; in the present instance it has at its upper end a hole, is, which takes over the vend of a pin, Z, that projects horizontally from the door-frame, m, directly over the top of the door, D, so that the said carrier will be surrounded but not supported by the guide-tube, A.

The cartridge-cylinder or carrier, F, made of sheet material is thin and of light weight except at the lower end where the metal plug, g, gives the desired weight that will cause the said carrier when falling out of the guide-tube to maintain an upright position, and insure that the lower plug-end, 9, will be the part to strike the floor.

A cartridge-holder, J, consists of a solid metal cylinder having a central space, a, which is open at the bottom to receive the cartridge, 0, as seen in Fig. 4; the upper part of the said space has a bottle-neck shape, p,which opens at the top and provides for the escape of the spent gas of the fulminating powder of the exploded cartridge.

The cartridge-holder, J, fits loosely within the hollow cylinder, F, being entered at the upper end thereof; the fuhninate or caphead of the cartridge, 0, is seated on the point of the firing pin, it, and the spring stay or catch, 2', contacts with the cartridgeholder and retains it to its proper position. \Vhen the cartridge holder, F, falls to the floor the weight of this metal holder, J, will cause the cap of the cartridge, 0, to be forced down on the firing pin, h, and produce an explosion.

The device operates as follows: The outer guide tube, A, may be set or secured to the door at its top edge at any time, and in that position the tube may remain empty. The pin, 1, may have a screw thread by which to fasten the pin to the top part of the doorframe directly over the open end of the said guide-tube, A. I

Then it is desired to set the explosive alarm for action, a cartridge-holder, J, containing a cartridge must be inserted into the open upper end of the empty cylinder, F, until the holder has the position shown in Fig. 4; then the said cylinder or carrier, F, must be inserted loosely into the guide-tube, A, on the door, and the hole, is, in said carrier engaged with the pin, Z, on the doorframe as seen in Fig. 2. The door may then be locked if desired by the usual door-lock. The alarm parts are now in proper position for action. It will be understood that the cartridge-carrier, F, and cartridge-holder, J, are supported entirely by the pin, Z, which is on the door-frame, and are merely surrounded but not held, by the guide-tube, A, which is secured on the door itself.

In the event of a burglar opening the door by any means, the effectof moving the door would be to release the cartridge-carrier, F, from the supporting pin, Z, and as soon as released the said carrier would slide down through the guide tube, A, which latter would start it straight in its downward course, and so direct it as to avoid the panel moldings on the door, and reach the floor with the plug, 9, downward which is the proper position to insure an explosion of the cartridge. The noise of this explosion constitutes the desired alarm.

Having thus described my invention what I claim and desire to secure by Letters Patent is,

1. In a burglar alarm for doors, the combination of a cylindric guide-tube open at both ends and having means for securing it to a door; a cylindric cartridge-carrier open at its upper end and provided at its lower end with a weighted plug having a firingpin and said cartridgecarrier inserted loosely in said guide-tube, and a cartridgeholder containing a cartridge and said holder loose within said carrier.

2. The combination of a guide-tube open at both ends and provided at its top end with a laterally-projecting flat arm to engage the top edge of a door, and at its lower end with a lateral foot to contact. with the side surface of the door; a cartridge-carrier which is loosely surrounded vby said guidetube and unattached thereto; and a cartridge-holder fitted loosely within said carrier.

3. In a burglar alarm a cartridge-carrier open at its upper end but closed at its lower end which latter has an upward-projecting firing-pin and the wall of the carrier provided with a spring-catch; and a cartridgeholder fitting loosely within the carrier and having a central space to receive a cartridge while its cap contacts with said firing-pin and the holder retained in the carrier by contacting with said spring catch.

In testimony whereof I aflix my signature in presence of two witnesses.

EDIVARD REICHENBACH.

Witnesses GEO. J. KIsPERT, J ESSIE PUERNER.

Images