US1544019A - Burglar-alarm system - Google Patents

Description

June 30, 1925.

W. M NAMES BURGLAR ALARM SYSTEM Filed Nov. 6. 1924 June 30, 1925.

Filed Nov. 6, 1924 w. MCNAMES BURGLAR ALARM SYSTEM 2 Sheets-Sheet 2 WWW Patented June 30, 1925.

UNITED STATES WILLIAM Marmara or ABERDEEN, cum n aorA,

BURGLAR-ALABM SYSTEM- Application filed November To all whom it may concern:

Be it known that I, VVILLIAM MQNAMES, a citizen of the United States, residing at Aberdeen in the county of Brown and State of South bakot-a, have invented certain new and useful Improvements in Burglar-Alarm Systems, of which the following is a specification.

This invention appertains to burglar alarm systems and the primary object of the inventionis to provide novel means for automatically sounding an alarm upon the opening of a door or window and for automatically discharging a gun at the intruder.

Another object of the invention is the provision of aspring actuated lever and a novel trip or catch for holding the lever in a set position against movement by the spring and means for. releasing the catch upon the operation of a door or window, the lever carrying means for actuating the gun when the release lever is released.

A further object of the invention is to provide a novel mechanism for giving an alarm and for discharging a gun,'when an intruder breaks into a house, the device being so constructed as to permit the alarm to be arranged at a point distant from the house, whichis broken into, such as a police station or the like.

A further object of the invention is to provide a novel burglar alarm mechanism embodying a base plate to which is rigidly secured any preferred type of fire arm and a swinging operating lever, having resilient means connected thereto for normally urging the same in one direction for actuating the trigger of the said fire arm, the spring also forming means for actuating an operat ing rod for the alarm, novel means being provided and mo-untedupon said base for normally holding the lever against swinging movement under influence of the spring, and operable by the movement of door or window.

be hereinafter more specifically described,

6, 1924. s m n. 748,228.

claimed and illustrated in the accompanying drawings, in which drawings,

Figure 1 is a side elevation of the improved device,

Figure 2 is a top plan view of the same, parts of the alarm mechanism being shown insection, the view being taken substantially on the line 22 of Figure 1 looking in the direction of the arrows,

Figure 3 is a fragmentary side elevation of the improved device looking in the opposite direction from Figure 1, parts of the device being broken away and in section,

Figure l'is a transverse section through the device taken on the line 4.t of Figure 3, looking in the direction of the arrows illustrating the operating lever for actuating the trigger of the fire arm,

Figure 5 is a transverse vertical section through the improved device taken on the line 5-5 of Figure 3 looking in the direction of the arrows illustrating the guide and latch for the operating lever.

Referring to the drawings in detail, wherein similar reference characters designate corresponding parts throughout the several views the letter A generally inclicates the improved device which embodies a conventional type of fire arm 10 and operating means 20 therefor and an alarm mechanism 40.

As stated the fire alarm 10 is of the conventional type and as shown is in the form of a rifle including a stock 11, a barrel 12, a hammer 13 and a trigger 14. This fire arm 10 is arranged longitudinally of a supporting base plate 15. which can be formed of anydesired-material such as wood or the like. Adjacent to one end of the base plate 15 at one side of the longitudinal 'axis thereof is secured a supporting bracket 16 to which is connected by means of bolts 17 the stock 11 of the rifle.

The operating means 2-0 for the rifle is also utilized for setting in motion the alarm mechanism 40 which canbe placed at a point distant from the fire arm, as will be hereinafter more fully described. The operating mechanism 20 embodies a relatively heavy I swinging lever 21 which is pivoted at its lower end to a bracket 22 secured to the upper face of the base plate 15 at one side of the fire arm 10 and adjacent to the trigger 14; thereof. This lever has formed thereon or secured thereto a laterally exsecured thereto a wire" cable 24: which-caii be of any desired length and this cable is secured at its rear end to an actuating rod 25, which is slidably mounted within a guide opening formed in the supporting bracket 26. This operating rod 25is also utilized for actuating the a-larin mechanisnrtO as will be hereinafter described, Acontractile' spring 27 is coiled about the rod '25 and has its opposite terminals secured to thefbr acket' 26 and therod 25 and this spring normally urges the' rod 25 and the lever 21 in one direction. for actuating the alarm and the rifle respectively, a 7

In order to normally hold the lever 21 againstswinging movement under the influence of the spring 27 1 provide a latch for the said leveiu- This latch embodies an upstanding leaf spring 28 having a keeper lug 29 on .its inner lace under which'is adapted to be positioned a rigid latch lever 30 carried by the said operating lever 21. This latch lever 30 is provided with ahook terminal 31 for engaging under the latch lug and the latch lug carries a guide 32 tor directing the latchlever underthe lug during the initial setting of the apparatus This guide 2 2 is,

ofa substantial lJ-shape in cross section, as can be seen by-reierring to Figure 5 of the drawing The lower end of the guide .82

carries a depending loop 33 through which thelatch arm or lever 30 is adapted to extend.- The extreme upper endotthe leaf spring 28 has-secured thereto inany desired way an eye 3% to which can be attached any number of pull cables 35. These pull cables 35 are adapted to be attached to window sashes, doors and the like so that upon. the opening thereof the leaf spring will be drawn back for moving the latch lug from out of engagement with the latch arm per mitting the actuation of the operating lever and the operatingrod. A guide eye 36is provided for the pullcables and this guide eyecan be supported by'any desired type of bracket 36 which is secured to the base plate 15. The guidebracket 87 can also be utilized for holding the spring 28in place and if desired the spring can be formed directly on the said bracket;

1 18 alarm mechanism 40 also embodies a base'plate ll to which is secured a supporting bracket 42. This supporting bracket 42'has bolted or otherwise secured thereto any desired type of clock mechanism 43 for actuating a bell tapper at and a bell 45 is secured to the bracket in thepath of the said tapper a n In orderto normally prevent operation of theclock mechanism a pivoted dog 46. is carriedby the frame of the clock mechanism and this dog has its toothed end normally held in engagement with one of the clock wheels, by means of a cont-ratile coil spring '47. "The pivoted .dog 46 opposite to the toothed end thereofis provided with a depending foot 48 which is disposed in the path oi the operating rod 25 and it is obvious that when the operating lever 20 is released, that the rod will strike the foot 48 lifting the toothed end of the dog and permitting operation of the clock mechanism and the sounding of the alarm.

The bracket 26 is'carriedby the base plate 4-1 as can be readily seen by referring to Fi uresl and 2 of the drawing. 7 p I Now the gun operating mechanism is adapted to be positioned directly in front of adoor or window, while itis preferred that the alarm mechanism be placed at a point distant therefrom, such as in a policestation or the like. the cable 24 can '1 be of any desired length and can be trained over suitable guide pulleys or the like when necessary. It is also preferred to connect the pull cables 35 to the ring 3% in such a manner that the same can be readily disconnected from the release mechanism, when it is desired not to use the device. v l

From the foregoing description it can be seen that I have provided an improved mechanism which will be automatically set in operation uponthe inauthorized opening of a door or window and which is so constructed as to both discharge a firearm and an alarm mechanism. .y

Arranged in the path of the lever 21 is a buffer 38 which is carried by a, resilient standard 39. Thisv limits the swinging movement of the lever under the influence of the contractile coil spring.

Changes as to details may be made pro: viding the same do not depart from the spirit or scope ofthis invention, as defined by the claims. i

What I claim as new is I l. I In a device of the class described, a fire arm, including a barrel, a stop and a trigger an alarm mechanism including a bell, a pivoted lever for operating the trigger, a slide ing rod for operating the alarm mechanism, means connecting thelever and rod together for synchronous movement, a single leaf spring for moving the rod and lever to an operating position, a rigid latch arm carried by the lever, a movable trip for. engaging said arm for holding. the lever: and rod against movement, a guide carried by said tripxtor the latch arm, a pull cable for actuating the trip, and a guide for said pull cable. i a a 2. In a device of the class described, a base plate, a fire arm rigidly secured to the base plate, an alarm mechanism including a hell,

It is therefore evident that synchronous movement, a contractile spring coiled about the rod for normally urging the rod and lever to an operative position, a rigid latch arm carried by the lever having a hook terminal, an upstanding leaf spring secured to the first mentioned plate, a latch lug carried by said leaf spring for receiving said latch arm for normally holding the lever and rod against movement, a guide carried by the latch lug and spring for said latch arm, and an operating cable connected to the free end of said leaf spring.

8. In a device of the class described, a base plate, a fire arm arranged longitudinally of the base plate including a stack, a barrel, a hammer and a trigger, a bracket rigidly connecting the stack of a fire arm to the base plate, a lever pivotally secured to the base plate at one side of the fire arm adjacent to said trigger, a laterally extending trigger bar carried by the lever for operating the trigger of the fire arm, spring means normally urging the lever to an operative position, a buffer carried by the base plate and disposed in the path of the lever for limiting the swinging movement thereof in one directlon, an upstanding leaf spring carried by the base plate disposed forwardly of the lever, a latch lug carried by the leaf spring, a rigid latch arm having a hook terminal carried by the lever adapted to engage under the latch lug, when the lever is in its set inoperative position, a U-shaped guide for the latch arm carried by the latch lug, a pull cable secured to the free end of said. spring.

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

\VILLIAM MCNAMES. W'itnesses:

A. 7. CAMPBELL. JULIA OCoNNoR.

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