US1393382A - kushner - Google Patents

Description

S. KUSHNER.

PNEUMATIC ALARM.

APPLICATION FILED MAY 26, 192i.

1,393,3 2, Patented Oct. 11; 1921.

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z B E 9 m N 4 a a H m a w M 5% 7 A a, W l 2 5 l l .5 l 44% M w l h 7 A v/ A UNITED STATES SAMUEL K'USHNER, OF NEVI YORK, N. Y.

PNEITMATIC ALARM.

Application filed May 26, 1821.

1 '0 all who it may concern:

Be it known that I, SAMUEL K'UsHNnR, a citizen of the United States, residing at New York in the county of New York and State of blew York, have invented a new and useful Pneumatic Alarm, of which the following is a specification.

The present invention is a pneumatic alarm and relates particularly to burglar alarms, such as sounding a police whistle.

It is well known that burglars or those which commit unauthorized trespass, are more greatly aroused and thrown into excitement by the sounding of a police whistle than by any other means of burglar alarm. Their confusion is excited to the point where they immediately retire from their pursuit because it gives the unquestionable and well recognized alarm of distress to those in authority.

It is therefore the object of the invention to produce an alarm of the above type which is automatically and continuously operated and which is of an extremely simple construction" and can be produced and sold at a minimum of cost, the simplicity of the device being of the essence of the invention, thereby permitting a device of this nature to be within the financial reach of all merchants.

Another object and feature of the invention is that the alarm is given intermittently in successive blasts in a manner fully simu lating the blowing of the police whistle by a human being.

The invention further resides in the sundry details of construction, combination and arrangement of parts which will appear in the following detailed specification.

In this specification and the annexed drawings, the invention is disclosed in the form in which it is considered to be the best, but the invention is not limited to such form because it is capable of being embodied in other forms; and it is to be understood that in and by the claims following the description herein it is intended to cover the invention in whatever form it may embody within the scope thereof.

In the accompanying drawings which form a part of the specification it will be seen that:

Figure 1 is a top plan view of a casing with the top removed, illustrating the whistle blowing and time mechanism,

Fig. 2 is a sectional view taken through Specification of Letters Patent.

Patented Oct. 11, 1921.

Serial No. 472,771.

the casing containing the mechanism shown in Fig. 1 and illustrating the latter in side elevation, the whistle being connected thereto,

Fig. 3 is a view showing a store or room and the application of the invention thereto,

Fig. 4 is an enlarged fragmentary sectional view of the whistle timing means,

Fig. 5 is a top plan view of the mechanism shown in Fig. l,

Fig. dis a fragmentary side elevation of the timer shown in Fig. 4 looking in a direction at right angle to Fig. 4, and

Fig. 7 is a diagrammatic view illustrating the wiring for controlling the operation of the motor of the alarm.

This mechanism is adapted for use in stores, private houses, offices, etc, where protection is needed day and night. The mechanism consists of an electrical motor that runs a rotary air compressor directly connected to a whistle and supplying, when in operation, a constant and continuouspressure of air for blowing the whistle, without the use of an intermediate or auxiliary device; This compressorpumps air pressure through means whereby it is timed at intervals to correspond to the intermittent blowing of the human breath. The mechanism is, preferably, but not necessarily, closed in a 'suit able box which may be placed in any suitable location in a store, home, etc., (and if used in a store either below or above the show-window,) hidden from View. This mechanism is connected by a suitable tubing or air conductor to the outside to a police or other whistle, likewise obscured from view and protected from the elements.

From the box or casing containing the operating mechanism leads electric wiring connected to a suitable source of electric supply, the wiring having therein suitable circuit make and break devices which close the circuit through the motor of the mechanism. "The make and break devices may be arranged anywhere in the store or building, to be actuated automatically, when a door, window, or show-case is opened, or manually by the attendants. These make and break devices are of conventional form and need not be specifically described.

The mechanical and electrical construction is as follows:

A sheet iron box 6 is used to conveniently house the mechanical elements as shown in Figs. 1, 2 and 3. In this box 6 is contained an electrical rotary motor 7, which by its pulley 8, on the end of the armature shaft, and a'leather belt 9 drives the air rotary compressor or fan blower 10, by means of the blowers pulley 11 on the shaft of the blower. The blower 1.0 has an inlet portion 1%, through which the air for compression is received, and an outlet 15, through which the air is expelled. The blower is of standard type and needs no enunciating here. However, it is deemed advisable to use a funnel-shaped opening 14, at the intake or suction end of the blower, so as to draw the air in at better advantage. A pipe 16 leading from the outlet 15 is conveniently shaped to cotiperate with the specific timer, shown in Figs. 1, 2, 4:, 5, and 6, and has attached to its outer end a suitable air conductor, which in the present showing is the flexible tubing 18 to theouter end of the latter being detachablyiconnected the police-whistle 18.

Mounted on the base or bottom of the easing 6 and between the motor 7 and compressor 10, is a U-shaped shaft bearingbracket 19, having journaled in the ends of its upright arms 20 the transverse timing shaft 21. A pulley 12 is fast on one end of the shaft 21 and is arranged to Contact with said belt 9 at the point 13, to be driven by the latter. The other end of the shaft 21 carries fast thereon the worm 22.

The pipe 16, in the present embodiment, has a vertically extending portion 16 in the vicinity of the worm 22, so therefore, at the point 30, of'the pipe a suitable support 31 is utilized, to strengthen the mechanism. The entire mechanism is firmly'fixed on a base plate32 and may be put in the box 6, if desired, and attached by rivets or other means thereto. The vertical portion 16 of the pipe has a lateral opening 27, preferably square, therein. Obviously, when this opening is uncovered any air passing through the pipe 16 escapes before reaching the whistle 18. In order to open and close the opening 27 at determined intervals, a sleeve 28 is rotatably' fitted on the portion 16 of the pipe to cover the opening 27. This sleeve has a corresponding opening 29 to register with the opening 27 when the sleeve is retated. Thesleeve is rotated by a spiral gear 17 through which the pipe extension 16 extends, said gear rotating on the latter as an axis. The sleeve 28 may either be integral withthe gear or secured thereto by rivets or other means 28%. The gear 17 is maintained in position by the flange 26 on the pipe extension 16, to mesh with the Worm 22, as clearly shown in Figs. 1,2, 4:, and 6. I v

The timing of the shaft 21 is readily permitted, in the present construction and arr-angement, by the replacement of the pulley 12 with one great-er or less diameter, w ereby egulati g the intervals at wh ch the whistle is blown as well as the duration of each blast. The shaft 21 may be slidably adjusted, as desired or required, by manipulation of the adjustment collars 2 and 2 1 (Fig. 1). Openings 3?) and 34: are provided so that the blower 10 may receive the air for its purpose in the casing (3. ires 35 are carried from the motor T to the outside through the outlet 36. This structure is a compact, solid. whole, and eliminates all possible noise from reaching the exterior.

Fig. 3 shows the mechanism installed in a store of which 3'? is the floor, the window, 413 a show-case, and -11- the cash window. The box 6 is conveniently placed in a corner. as at 38, and the flexible tubing 1 is carried through the window so as to be on the outside when it is connected on whistle 19. It is securely housed in an iron cage 11, so as to prevent possibility of tampering or accident. The machine is then wired to the make and break switches 45. These are placed, as desired, to be actuated by opening the doors, windows, or may be placed on the floor where they will he stepped upon, and one is placed conveniently to the cashier as at -15, e6 being the main or master switch. The wiring diagram, shown at Fig. 7 is as follows. The current enters at the source 50, and is carried through fuse 1-7. to the motor 7, thence to the main or master switch 16, then to the switches 4-5 connected in parallel, and thence back through the fuse 4:9 to the power source at 50. The switches 15 may be of the push button type or any conventional type.

Operation is as follows: The master switch 16 must be closed. Depressing any alarm switch 415, closes the circuit of the motor 7. which by its belt 9., runs the pulleys I1 and The blower 10 creates air pressure which is carried through the timer to the whistle. The timer as previously explained creates intervals of pressure because of its vents 27 and 29.

As the two vents 27 and 29 register on each revolution of the gear 17. the air passing through the pipe 16 and its extension 16- is shunted from the whistle. which ceases to sound for the interval. But, as soon as the sleeve 28 covers the vent 27, the air continues in a steady constant pressure straight up the tube 16 and passes through the whistle, thus sounding it. So, therefore. on every revolution, there is an interval that the whistle does not blow. This interval is such that it represents and simulates the length of time a person would blow, then stop to inhale and blow again. This action closely resembles, when in operation, the action of a person and is one of the novel features of the invention.

lVhen once placed in operation, the device will blow until th m ster switch is pulled out. The switches are shown in the present disclosure as having arms 51 and 52 which may be alternately depressed for opening and closing the circuit to the motor 7.

From the foregoing it will be clearly observed that a pneumatic whistle alarm is provided in an economical manner there be ing but few parts, thus insuring durability and the operativeness of the device at all times.

Having thus described my invention in the form in which it is at present devised, what is claimed as new and novel is: A

1. In a pneumatic whistle, a rotary air compressor, a whistle connected to the outlet of the compressor, a motor, and an operative connection between said motor and compressor.

2. In a pneumatic whistle, a rotary air compressor, a whistle connected to the outlet of said compressor, an electric motor, and a driving connection between said motor and compressor.

3. In a pneumatic whistle, an air compressor, a pipe leading from the outlet of said air compressor and having a vent therein intermediate its ends, a whistle connected to the said pipe at a point beyond said vent, a rotary sleeve on said pipe for closing said vent and having an opening therein to register with the latter during its rotation, whereby the said whistle is intermittently sounded, and means for rotating said sleeve and actuating said compressor.

4:. In a pneumatic whistle, an air compressor, a pipe leading from the outlet of said compressor and having a vent therein intermediate its ends, a whistle connected to said other end of the pipe, a gear wheel.

for rotating said gear and actuating said compressor.

5. In a pneumatic whistle, an air compressor, a whistle, a connection between the whistle and the outlet of the compressor, said connection having a vent between the whistle and compressor, a rotary sleeve surrounding said connection for closing the vent and having a corresponding opening therein to register with said vent during rotation of the sleeve, a gear radiating from said sleeve, a motor having connection with said compressor for actuating the latter, and a shaft having an operative connection with said gear wheel and actuated by the motor, whereby the sleeve is rotated to cause intermittent sounding of said whistle.

6. In a pneumatic whistle, a base, a rotary air compressor mounted on said base, an electric motor mounted on the base, pulleys on the ends of the shafts of said motor and compressor, a driving connection between said pulleys, a pipe connected to the outlet of the compressor and having a vent therein intermediate its ends, a whistle connected to the other end of the pipe, a rotary sleeve on the pipe for closing said vent and having a corresponding opening therein to register with said vent during the rotation of the sleeve, a timing shaft having a geared connection with said sleeve for rotating the latter, and a means on the timing shaft to take off power from said driving connection.

7 In a pneumatic whistle as set forth in claim 6, further characterized by the means on said timing shaft consisting of a pulley or gear wheel being removable from the latter and interchangeable with pulleys of varying diameter, for the purposes specified. In testimony whereof I have hereunto set my hand.

SAMUEL KUSHNER.

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