US1184353A - Horn or signaling device. - Google Patents

Description

C. KNOPF.

HORN 0R SIGNALING DEVICE.

APPLvc/mn HLED MAY 6.1910. REnEwED APR.1,1*9\3.

1 ,1 84,358. Patented May 23, 19m

ATTORNEYS wh narran strains PATENT OFFICE.

CARL KIIPIEL GE? YORK, N. Y., ASSIGNOR, BY MESNE ASSIGNMENTS, TO LOVELL- MQCGHEELL MANUFACTURING CMPANY, A CORPYORATION F DELAWARE.

HORN OR SIGNALING DEVICE.

Speeication o Letters Patent.

Patented May 23, 1916.

implication filed May 6, 1910, Serial No. 559.726. Renewed April l, 1913. Serial No. 758,266.

To all 11i/wm may camera Pie il; known that l, CARL KNorr, a Citizen of the United States, and a resident of the city of New York, borough of Manhattan, in the county' and State of New York, have 'invented a new and Improved Horn or Signaling leriee, of Which the following a full, Clear, and exact description.

lilly .invention relates partieularly'to that type oi horn in which vibration is imparted to a diaphragm by means of a rotor in the forni at a toothed Wheel. My invention relates particularly to the means for producing the sound waves and for securing the desired adjustn nt of the toothed wheel in respect to the diaphragm.

(lne embodiment of the present invention is disclosed, in the structure illustrated in the accompanying drawings, in which like charset ol reference denote corresponding p all the views, and in which# Figure 1 is a side view partly in section,

of a horn or signaling device constructed and arranged in aeeordanee with the present invention; Fig. 2 a sectional View taken ou the line 2`--2 in Fig. 1, showing. the vibrator chamber as having attached thereto a flexible shaft for .rotating the vibrator;

Fig. a eros.; section taken on the line 'l' 3 and Fig. 4 is a side view, pz l, on, showing the horn or signaling device yas having applied thereto an electric. motor for operatlng the vibrator. tl i drawings, a horn embodying my n illustrated as having a belt resonator 5, lXedly secured to a diaelaniping member in the form of a al collar 6. This collar has oppoendingcylindrical flanges, to one i the resonator is secured, and the which is externally threaded. A ...iplzragm (damping member in the a elflar 7, also provided with lv extending .flindrieal flanges, by a shoulder S. Both of these interiorly threaded, and one oi 'res the ange l() of the collar Cider S constitutes a seat for a 'n 9 which is held between the said shoulder 8 and the end of the flange 10 of the collar 6. The diaphragm 9 is construeted from any suitable resilientV vibratory material and its periphery is clamped between thev edge of the flange 10 and the shoulder 8' by sorewing the collars 'and 7 together. j, The collar 7 is provided with a flange 11 tof' engage the screw threads formed on a .oa.sing 12, which latter has end standards 14, 14 to support ashaft 15. The shaft carries a toothed Wheel 13 and in one yend is formed a square recess to receive the squared end 16 oi the rotary head 17 carried by` lthe flexible shaft 18. The shaft 18 is held against longitudinal movement by a flange engaging beneath a screw coupling 19 `whieh is threaded to engage a boss 20 formed on the casing 12. The teeth of the wheel 13 engage wlith a stud 21, mounted on the said diaphragm. The stud 21 is rigidly mounted on the cupped section22 of an auxiliary vibrator, which is rigidly'secured to the diaphragm 9 by rivets 23,23. The vibrator is provided with spread end sections 24, 21, which are fanshaped and disposed in close juxtapositionto the diaphragm 9 or separated slightly therefrom.

The stud 21 and the teeth of the wheel 13 are straight sided and therefore require that the stud 21 and the wheel 13 shall maintain their relative positions. It is'for this purpose that the pins 25, 25 are provided which are rigidly set in sockets 26, 26 integrally formed on the end 12. The pins 25,

are extended slidably through perforations provided in the diaphragm 9. This axial adjustment between the easing 12 and the diaphragm does not disturb the relative vradial positions of the said diaphragm stud -21 and wheel while permitting the neces: sary movement of the easing 12 to separate the same from the diaphragm and thereby adjust the relation between the stud 21 and the wheeL 13. This adjustment, it willbe understood., is accomplished by rotating the casing 12 within the flange 11 of the collar 7. The threads within the flange 11 fe d outward or inward the cup 12, while e.

diaphragm 9 is held on the shoulder 8.

When it is'desired to rotate the casing 12, the collar 6 is first rotated to move the edge of the flange 10 from contact with the diaphragm 9 to permit the said diaphragm to rotatively slide on the shoulder Stof the collar 7. When the proper adjustment between the wheel 13 and the stud 21 has been obtained, the collar 6 is revolved to force the flange l() against the diaphragm 9 to holdY the same tixedly in position. In thus locking the diaphragm 9, the casing 12 is locked and the adjustment of thesaid Wheel and the diaphragm and stud 21 thereon is secured against disarrangement.

In l? ig. 2 of the drawings there is illustrated a method of rotating the wheel 13 wherein is employed a flexible shaft 1S. In certain instances it is desired to rotate the wheel 13 by employing a small electric motor 27 as shown in Fig. 4 of the drawings. The casing for the motor 27 is provided with a lateral opening tubular extension which is adapted to lit the screw threads formed on the boss`20. The motor is prouided with an armature shaft 29 the end whereof is provided with a squared extension 30. When the motor is secured upon the boss, the armature shaft passing therethrough, the

squared extension 30 is seat-ed within the perforation formed in the shaft 15 in the same manner as the squared end 16 of the llexible shaft 18.

When the horn is provided with the motor 27 attached as shown in Fig. 4 of the drawings, the wheel 13 is rotated whenever the electric circuit for operating the lmotor is completed. When 4 the horn is suitably mounted on an automobile or other vehicle,

and the flexible shaft, with its rotating attachment is disposed onsaid vehicle, the operation is as follows: When it is desired to sound an alarm, the shaft 18 is rotated by the chaueur, thereby revolving the Wheel 13. As each of the spurs of the wheel 13 pass over the stud 21,v it operates to displace outwardly from the wheel 13 the said stud, and to 'force the sections 24, 24 against the diaphragm 9, thereby producing in the diaphragm a vibration. With the passage of each of the teeth, and the recession of the section 22 from the diaphragm 9, an independent vibration is set up in the sections 24 of the vibrator, which, through the rigid connection of said vibrator to the diaphragm, is communicated to the said diaphragm. The vibrator being of lighter ma terial, and varying in construction, will produce a set of vibrations dill'ering from that produced by the diaphragm 9. The interweaving, varied vibrations thus imparted to the diaphragm, and by the diaphragm to the air contained. within the body of the resonator 5, results in the formation of'compl'ex sound waves. By reason of the stri?v ing'of the teeth upon the stud 21, there is produced a cicadous sound. The comminglingof all the tones produces a. distinctive and individualized alarm.

Having thus described my i-nvention,wl-.a

I claim as new and desire to securebby Let ters Patent is 1. A horn or signaling device including a diaphragm, means for vibrating said dia phragm including a rotor, separate supports for said diaphragm and said rotor.

one of said members, a casing having threaded engagement with the other of said members, and adjustable toward and from said diaphragm by a rotary movement about an axis at right angles to said diaphragm, a shaft projecting through the wall of said casing and substantially parallel to said diaphragm, and a rotor carried by said` shaft for vibrating said diaphragm, and adjust? able toward and from the latter by said rotation of. said casing in respect to the diaphragm clamping members, and locking means normally preventing the rotation of said casing in respect to the diaphragm clamping members.

3. A horn or signaling device, including a diaphragm, a toothed rotor, and means for vibrating said diaphragm upon the rotation of said rotor, said means including an intei-mediate flexible member engaging with said diaphragm at aA plurality of points, and

having a portion intermediate of its ends spaced from said diaphragmand in the path of the teeth of said rotor.

4. A horn or signaling device including a diaphragm, a toothed rotor rotatable about an axis substantially parallel to the ldiaphragm, a diaphragm support, a rotor-support, connections between said supports whereby the rotor may be adjusted toward and from t e diaphragm by a rotary movement of `one support in respect to the other about an axis substantially at right angles to the diaphragm, and means connecting the diaphragm to the rotor support for prvventing rotary 'movement of the diaphragm in respect to the rotor during such adjustment. p

5. A horn or signaling device including a diaphragm, a Wear-piece having a substantizi'y Straight lino Contacty surface, a rotor mounted to rot-(ite about an axis substmitinly 'pjlu'nioi to' the diapi'iragm, a diaphragm newport :L rotor Support, one of said Slipport; being rotatable about :m :iXiS subqtuntialy ai; right angles to said diaphragm for effecting relative :ldjustmnt of Suid dio pln'aigm md- ,rotorl toward amai from auch other. und moans 'for holding said wcm-piece with its Contact sur-face extending in 1h@ gene-ral direction of the axis of the rotor fim'ing said adjustment.

In testimony whereof I have Signed this spectication in the presence of two subscribing witnesses.

' CARL KNOPF,

Vv'itnesses z MoRToN A. EDELSTEN, MAUD N, JARNY.

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