US1428124A - Alarm - Google Patents

Description

F. C. STINZING.

ALARM.

APPLxcAtloN FI'LED MAY 4. 192|.

Patented Spt. 5, 1922.

Patented Sept, 5, 1.922.

SATES FRANK C. STINZING, OF NEW YORK, N. Y.

ALARM.

Application iled May 4, 1921. Serial No. 466,778.

To all LU/tom t may concern.'

Be it known that l, F RANK C. S'riNzING, a citizen of the United States, and resident of the borough of Bronx, in the city, county, and State of New York, have invented certain new and useful improvements in Alarms, of which the following is a specification.

This invention relates to alarms whereby the attempted, unauthorized employment of any mechanical device may be audibly announced, as by the production of a shrill whistle, for the purpose of preventing` theft. l

Briey expressed the alarm consists of a whistle structure, operable by a charge of compressed air, under the control of a setting valve, that is provided with suitable locking means, to Vrender its operation unavailable by other than authorized persons. The whistle is further controlled by an automatic valve which is arranged to open by the action of a moving part of the mechanism to be guarded, whereby thel operation of such mechanism, when the setting valve has been opened, will cause the whistle to be sounded, and to continue sounding as an alarm until the setting valve isl closed.

Other features and advantages of my invention will hereinafter appear.

In the drawing z- Figure 1 is a horizontal sectional view of my alarm apparatus, and

Fig. 2 is a vertical section on the line 2-2 of Figure 1.

In the drawing I have shown my improved alarm as applied to an automobile, to prevent the theft thereof, this example serving to illustrate the general principle whereby also other moving objects may be guarded.

In carrying out my invention l provide a container for compressed air, said container being here indicated as a cylinder 1, having closure means 2 at one end, and, at its other end connecting by means of a suitable duct 3 (which may be of glass or other frangible material), with a valve chamber 4, having a valve 5 that is capable of automatic operation.

The entrance to duct 3 is covered by a valve seating member 6, having aligned orifices to provide communication between cylinder 1, and said duct, a valve 8 tting in said seating member 6, to normally Shut automatic y olf communication, but having a transverse orifice to register with orifices 7 and thus open up communication. y

The valve 8, here shown as conoidal in form and revoluble in seating member 6, is provided at one end with a squared recess 9, to receive the squared shank 10 of a revolu- `ble lock member 11, that is capable of actuation as by means of a key 12, or by other suitable means, for the purpose of turning valve 8 between its open and closed'positions.

When the valve 8 is open, it will be ap? preciated that if valve 5 also be opened, a flow of air under pressure will escape from cylinder 1. This pressure flow is utilized by me to actuate a whistle that is located in the cylinder in advance of the valve seating member 6. As an example of whistle structure which may be employed I have shown a hollow cylinder 13, containing a diaphragm or reed 14, and having a neck por-y tion 15 that is covered by a disk 16, said disk being of smaller diameter than said cylinder, and lying within `the throat portion 17 of a conoidal member 18, that lits within the cylinder 1 inthe manner of a partition. A slight clearance 19 is left be tween the peripheral edge of disk 16 and the wall of portion 17, causing air to .flow in an annular stream through said clearance, for impingement against the peripheral edge of cylinder 13, and resulting in the production of a shrill whistling sound.

To prevent tampering with the cylinder 1 it is made of great strength and is capable of containing air compressed to a large number of atmospheres. Therefore the relief means, in whose path the whistle is located, may be regulated. by pressure reduction means, such as that indicated at 20, whereby the compressed air supply may be conserved, and the serviceability of a cylinder charge prolonged.

The duct 3, here shown as an elbow tube, its into a socket portion 21 forming part of valve seating member 6, and a tight union therefor is effected by means of a stufling box in the form of a cap 22.

Also, the opposite end of tube 3 is entered into tight union with valve chamber 4 by means of a stuffing box 23, of similar character.

The valve 5, which is of concavo-convez form, has a spindle 24, revolubly centered i! a spider 25, lying across the valve chamber 4, and is outwardly urged against an annular' seat 26 upon which it is adapted to rock, in any direction. Said valve 5, when rocked, in any direction, serves to open a passage between it and its seat 2G, thus permitting escape oi air to the atmosphere from tube 3, and thereby enabling` the Whistle to sound an alarm.

For its automatic actuation the valve 5 is provided with an arm 27, that may be disposed to lie in the path of any movingh object Whose movement it is desired to have detected or signaled by an audible alarm.

Thus, in the example given in the drawing the arm 27 is shown as projected between adjacent spokes 28 ot' a Wheel 29, that forms part or' an automobile; in this example, also, the alarm apparatus being suitably mounted on the automobile chassis 30` as by fastening means 31. f

As Will be readily understood, the owner, or person authorized to operate the automobile, will insert the key 12 in loch member 12 and turn valve 8 to open the passage between cylinder 1 and tube 3, irst having` adjusted valve 5 upon its seat `26 to close the outlet, and in this act causing the arm 27 to be entered between the Wheel spokes.

The air pressure ot cylinder 1 will there` by be communicated to tube 3,. and the alarm will be set. Thereafter, should the automobile be moved the turning` ot the Wheel will roch arm 27,.thereby shitting the valve from its seat and opening the valve passage, whereupon the rush of compressed air past the Whistle Will operate the latter,

calling the attention o'l persons Within hearing1 to the tact.

Should the intending` thief attempt to tamper with the alarm, he may break the `glass tube 3, but that would not silence the Whistle, Which can only be shut off by turning the valve 8, reepiiring` the use oit the owners key. v

rlhe cylinder 1 may be recharged as through an orifice in valve chamber el, which can be normally sealed with a plug (not shown). f

Variations Within the spirit and scope ot my invention are equally comprehended herein.

l claim 1. An alarm for indicating` the unauthorized moving` ot a motor vehicle comprising a compressed air supply, controlling valve therefor, Whistle, pressure release. means, and fixed means co-acting with a traction Wheel of the motor vehicle to actuate the pressure release means, for sounding the Whistle.

2. An alarm for indicating the unauthorized moving of a motor vehicle comprising' compressed air suppl, a controlling, valve therefor, locking means for said valve, a Whistle, pressure release means, and fixed means co-acting with a traction Wheel ot the motor vehicle to actuate the pressure release means, .tor sounding the Whistle.

Signed at the borough of Manhattan in the city, county and State of New York this 3rd day of May A. l). 1921.

FRANK C. STINZING.

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