US1711276A - Signal alarm - Google Patents

Description

April 30, 1929. 5. J. MACHOSKY S I GNAL ALARM Filed Sept. 9, 1927 0 O 0 O O O o ooooooooooo INVENTOR. dag

Shulem mgr 5 ATTORNEYS.

Patented Apr. 3%, 1929.

PATENT OFFICE.

'SHULEM J. IYIARCHO'SKY, OF CEISTOBAL, CANAL ZONE.

SIGNAL ALARM.

Application filed September 9, 1927. Serial No. 218,501.

This invention relates to an electrically operated alarm adapted to be placed in or near banks, hotels, places of business, res1- dences or the like, for the purpose of sounding an alarm and fri htening away robbers or other persons with evil intent. v

One object of the invention is to provide a series of alarms adapted to be set in operation simultaneously.

Another object is to provide a series of alarms, both audible and'visible, whereby the attention of police and passersby is attracted and robbers will believe that they are being fired upon.

Another object is to provide an alarm comprising visible and audible signals which are set in operation upon the closure of a single electrical circuit.

With the above and other objects in view which will appear as the nature of the invention is understood, the same consists in the improved construction and novel arrangement of parts which will be hereinafter fully described and particularly pointed out in the claim. a

In the accompanying drawings,

Figure 1 is a front view of the signal alarm showing conventionallythe relative locations of the various parts;

Fig. 2 is a side View of the interior of the alarm box;

Fig. 3 is a detailed view of an electric cannon forming a part of this invention; and

4: shows a protective screen element.

Referring to the drawings in detail, numeral 1 indicates a casing within which the various alarm elements are mounted. Said elements include hell 2, siren 3, red light 4., illuminated red sign 5, and a detonating cannon 6. The bell 2 and siren 3 are mounted upon a vertical partition 7 which is braced by members 8. The sign member 5 is carried on supports 9 while the cannon is carried by supports 10.

A protective screen 11 is provided upon the front side of the casing 1, for the purpose of preventing access to the interior of the casing and tampering with the signal elements. Openings 12 are provided in the screen to afford visibility for lamp 1 and for the discharge of the contents of the cannon.

'A larger opening 13 provides for visibility of the illuminated sign 5. Said sign is in the form of a distress signal and in its preferred form comprises a series of red lights arranged so as to spell the word Help.

The current for operating the signals is taken from line wires 14 by means of a switch 15 and conductors 16. Branch conductors 17 are extended to the cannon at 18 and to the bell at 19. The signal elements at the top of the casing are connected in parallel between branch conductors 20.

An important part of this invention is the provision of a novel form of detonating cannon which is adapted not only to make a loud explosion upon discharge but which also ejects a dense smoke which is clearly visible. An electric fuse or igniting device 21 is located adjacent a mass 22 of phosphorous and sulphur and the latter becomes ignited by the A incandescence of the fuse 21. A mass of gunpowder preferably retained by a wad or the like 23 is located in front of the mass 22 and in turn is heated to the combustion point for the purpose of ejecting wad 2 1 and making an explosion. A mass of asbestos cotton or the like 24 is forced into the muzzle of the cannon to keep out moisture as well as to assist in the explosive force.

The operation of the device is obvious. l/Vhen the presence of robbers is detected by a watchman or other person on duty the latter has only to close switch 15 to start the alarm, all separate parts of which will operate simultaneously. The noise made by the bell, siren and cannon will be detected for a long distance'while the red light and distress sign will indicate the exact position of the building protected by the alarm. The dense smoke discharged from the cannon will be seen for several squares away, and the police and passersby will be called to the scene. The alarm can be made automatic by arranging the switch'so as tobe closed by the opening of a door or window or the like.

Having thus fully described my invention, what I claim as new and desire to secure by Letters Patent is An electric signal alarm comprising a casing, a vertical partition in said casing, an audible signal mounted on said partition, an electric cannon in said casing and extending through saidpartition and supported at its rear end thereby, means associated with said cannon for discharging dense smoke therefrom, a protective screen mounted on the front of said casing, said screen having an opening adjacent the muzzle end of said cannon permitting free discharge therethreugh of'the contents of the cannon, an electric sign comprising red lamps forming a distress Word in said casing, an opening in said screen adjacent said distress Word, and electric means for sin'niitaneousiy operating said signal said cannon and said distress sign. 10

In testin'iony whereof I have afiixed my signature.

SHULEM J. MARCHO SKY.

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