US973845A - Device for sounding motor-car horns. - Google Patents

Description

H.- BEAUGUUBT. DEVICE FOR SOUNDING MOTOR GAR HORNS.

APPLICATION FILED JULY 1a, 1908.

973,845. v Patented 0ct.25,1910

I which the motor shaft is provided does not by any suitable means, for example by trac- 'tudinal direction.

'- invention, has the object of not only permitblast (that is to say with the motor slowed its arrival at the horn is caused to pass into air furnished hasfa tendency to follow the HUGUES BEAU-COURT,

or LYON, FRANCE.

, DEVICE FOR SOUNDING MOTOR-CAR I-I )RNS.

Specification of Letters Patent. Patented Oct. 25', 1910.

Application filed July 18. 1908. 7 Serial No. 444,236.

To all whom it may concern:

Be it known that I. Huouns BuAUcouR'r, a citizen of the French Republic, residing at Lyon, France, have invented a certain new and useful Device for Sounding Motor-Car Horns, of which the following is a specification. y

This invention relates to a device for sounding motor car horns and the,object is to render such horns or warning instruments powerfully resonant, whatever the pressure and volume of air discharged thereinto, this effect being produced by means of a special aerodynamic device hereinafter described.

A rotary pump adapted to oscillate on the axle carrying it is placed near the fly-wheel of the motor so that the friction pulley with come into contact with said fly-wheel until the controlling button on the steering wheel is depressed. This control may be effected tion exerted on a Bowden wire under which name is known a tractive wire incased 1n a flexible sheath non-compressible in a longi- By reason of the variation of speed of the motor the fly-wheel revolves at'speeds which may vary from 200 to 1600 revolutions per pressure of the air furnished at these different speeds are essentially variable. Therefore, a horn designed tobe sounded by a weak current and pressure would be blocked designed for very powerful pressure and supply would be silent when the blast and pressure were weak. The aerodynamic device which forms one of the objects of this ting the operation of the horn with ,a weak down) but also with very powerful blast (that is to say with the motor running at high speed).

According to this invention the air before a reservoir the interior construction of which will be hereinafter described. This relay may have various shapes, but is preferably spherical. From the upper part thereof descends a central tube terminating at approximately a, sixth of the distance between the entrance and outlet of the air. Accord- ,ing to theknown aerodynamic principle the walls of the reservoir if the said walls, diverging from the air-inlet, make Wltlltllfi original direction of the air an angle of less than 180 degrees. By this action a countercurrent is produced at the central layer, which gives rise, near the lower orifice of-the central tube, to eddies the direction of rotation of which is, opposed to the initial current. There is thus produced, at this part,

.a depression which sufliciently weakens and attenuates the violence of the blast to prevent the blocking of the horn reed, though Ian-view of said um) and Fi 4: is an elevation on a reduced scale, of the device forming the object of this invention applied to an automobile vehicle.

The pump A, which may be of any desired construction, is capable of rocking about a shaft A carried by a bracket A attached to the frame of the vehicle. in such manner thatthe friction-wheel A fitted to the end of the pump-shaft is normally held at a distance of a few millimeters from the fly-wheel'B of the motor by means of a spring (Land can be driven by said fiy wheel when the pump is brought into operative position in contact therewith, for example by traction exerted on the internal wire of the Bowden device D, by means of a button placed on the steering wheel.

When the friction-wheel A is brought into contact with the fly-wheel B the pump A isoperated and the compressed air which it produces passes out through a conduit E and-is led by an ordinary flex ble tube F to the aerodynamic device G. This apparatus comprises a reservoir G. into which the compressed air enters from pipe F. In the annexed drawing this reservoir is of spherical shape and is provided with two unions H I. one of which (H) is connected to the flexible tube F supplying the compressed air from the pump, and the other (I) is connected to a tube J to which is fixed the horn or other warning instrument K.

The reservoir G contains a tube L the shape of which is immaterial, the end Li of the tube L is fixed to the Union I, and the end L open and located at a certain distance from the orifice of the union H. The compressed air supplied by the tube F enters the reservoir G in the manner indicated by the. arrows, and then, under the influence of the pressure, passes into the tube L and thence into the tube J which directs it to the reed M of the horn or warning instrument K. that I claim as my invention and desire to secure by Letters Patent ot' the United States is 1. The combination with an audible warning instrument and means for providing compressed air of an intermediate reservoir comprising an air chamber having its en trance in communication with said air providing means, said air-chamber having a tubular member therein, with one end de-' livering into said audible warning instrument exteriorly of said air-chamber, the op posite end of said tubular member terminating near the entrance of said air-chamber substantially as described.

2. The combination of an audible warning instrument a pump for discharging compressed air, a reservoir intermediate the said instrument and pump, having its inlet in communicatlon with said pump, and an air tube having its inlet end within the reservoir and in close proximity to the inlet thereof, and its discharge end in communication with the audible Warning instrument exteriorl of said reservoir substantially as describe 5 3. A device of the character described,1

comprising an audible Warning instrument, means for providing compressed air, and an a1r-chamber spherlcal in outline and having its entrance in communication with said 40 compressed air providing means, said airchamber having a tubular member therein, one end of said tubular member delivering into said audible Warning instrument ex-.

teriorly of said air-chamber, the opposite end of said tubular member terminating adjacent to the inletof said air-chamber.

In witness whereof I have signed this specification in-the presence of two wit-

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