US1043704A - Combination alarm device. - Google Patents

Description

M, R. HUTOHISON. COMBINATION ALARM DEVICE.

APPLICATION IILBD MAY 4, 1910. I I 1,043,704. Patented Nov. 5, 1912.

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' I W/N888: INVENTOR Y w rm/ U M. R. HUTCHISON. COMBINATION ALARM DEVICE.

- APPLICATION FILED MAY 4 1910.

v 1 043,704. Patented Nov. 5, 1912; f

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INVEN TOR rm/m r I mgpower than is desirable in a horn ,such reed horns,

MIILEE REESE HUTCHISON, OF NEW YORK, N. Y.

' CGJMBINATION ALARM DEVICE.

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Specification of Letters Patent.

Patented ov. 5, 1912;

Application filed May 4,1910. Serial No. 559,330.

To all whom it; may concern.-

Be it known that I, llllILLER REESE Hmcnison, a citizen of the United States, and resident of ew York city, in the county of New York and State of New York, have invented certain new and useful Improvements in Combination Alarm Devices, of which the following is a specification;

My present invention relates'to signal devices adapted for use on automobiles, launches, and elsewhere, and contemplates a device whereby the user may .be enabledat will. to produce a variety at signals, the volume and intensity and alarmin quality of which may be selected to suit the conditions of use.

The ordinary bulb operated reed horn such as is connnonly used on automobiles, has a note which is of less volume and carryintended for alarm purposes. Q11 the other hand the mechanically operated diaphragm horns covered by ll utchison patents, as for instance, Nos" 923,048, 923,0etl) and 923,122, of which the well known Kiaxon is a commercial form, are most desirable and eilicient for signaling over considerable distances and for preventing accidents by producing instant alarm in cases of great emergency in crowded city streets. There are many occasions, however, particularly where an automobile is proceeding slowly through city streets when it is desirable to employ a signal less alarming than that of the Klaxon horn yet louder than the ordinary note of the oriilinary bulb operated reed horn. In short, a reed hoin modified so as to have an improved note of greater carrying power and arranged so as to be available for instant use alternatively or simultaneously with the Klaxon is a very desirable combination for general use on vehicles.

With these considerations in view I have devised. an improved moditication of the bulb operated reed horn whereby the volume of the'sound is increased, is projected in advance of the vehicle with greater efficiency, and is caused to have a more penetrating quality.

My improvement involves substituting for the ordinary bell mouth commonly used on a preferably straight projector terminating at the forward end in a bell mouth and having an acoustic diaphragm at the .base or rear end. The tubular portion of the reed. horn preferably opens into the projector transversely, through the side or bottom, at a point :between the diaphragm and the bell mouth.- When thus arranged there is an amplifying effect due to the diaphragm at the base of the projector cotiperating with the projeci tor to increase the volume and the'efliciency of projection of the sound, and to improve the alarm quality thereof. This combination of bulb, reed and trumpet with a transverse projector having an acoustic diaphragm at the base, is especially desirable for the reasonthat the diaphragm may be of steel or other metal and hence if desired may be in all respects similarv to those employed for electrically or mechanically actuated dlaphragm horns. In such case a simple diaphragm and projector may be excited in either of two ways, that is, either by air waves from the reed horn, applied to the front side of said diaphragm or by an clectro-magnet or cam which may be located on the back side of the diaphragm, in a position where it will not interfere with or bre: k up the acoustic waves produced by the reed and trumpet on the front side thewof. This makes the: combination peculiarly adaptable to the special form ofprojector, diaphragm, rotary cam and electric .motor found in the Klaxon as now commonly used on automobiles and as specially set forth. in my application Serial No. 494,120 filed vMay 5th, 1909.- When used in this combination the diaphragm has a fectivc' the note from the particularly efreed. This is especially marked in cases where the'rotary cam comes to rest after' use either in contact with or very close to the wear piece of the diaphragm so that the vibration of the diaphragm set up by the acoustic waves from the reed and trumpet causes actual tap ing or chattering between the contact surfaces on the diaphragm and on the cam tooth adjacent thereto.

It will be noted that in one aspect my invention involves the utilization of intangible non-interfering means for exciting vibration of the. diaphragm from the front side thereof, the means being the acoustic waves applied to the projector intermediate the ends thereof. This is of great advantage as compared with any solid body or operating mechanism which in such location tends to break up and destroy the efficiency of the acoustic waves and the res nance thereof by action 111 sharpening the quality of I novel features of the construction and rela- I fully understood by reference to the acc0mtive arrangement of parts of the reed horn and trumpet thereof with respect to the projector and with respect to the depending case containing the motor used to supply the power for mechanically displacing the diaphragm.

The general organization of parts as well as the details of construction will be more panying, drawings in which,-

Figure 1 is a side elevation partly in vertical section showing a reed hornand trumpet co-mbinedwith the projector of a diaphragm horn. Fig. 2 is a front elevation of the projector and Fig. 3 is a detail view showing the reed employed in the construction shown in Fig.1.

Referring to Fig. 1 it will be seen that the improved reed horn comprises the bulb 1, flexible tube 2, detachable coupling 3, reed chamber 4, trumpet 5, and the projector 6 with diaphragm case 7, and acoustic diaphragm 8. The latter is clamped between 'suitable surfaces 9 and 10 formed respec tively on the diaphragm case 7 and the case 11 for the operating mechanism, the clamping being effected by screw bolts 12 through the medium of cushioning washers 13, 13, of cork or other suitable material. In practice this combination may be constructed from an ordinary bulb operated reed horn of good quality by removing the bell mouth of the trumpet and spinning the parts to fit the contour of a projector of a Klaxon horn adjacent the base thereof, cutting a hole of corresponding shape in the wall of the proj ector and securing the trumpet thereto as at 1 1, preferably by brazing.

In the specific forms shown the trumpet is secured quite close to the base of the projector adjacent the diaphragm and a convolution of the trumpet is brazed or soldered.

to the outside of the projector as at 15 so as to mutually strengthen and brace the projector with respect to the trumpet. As shown the portion of the open end of the trumpet at 16 curves toward the open end 17 of the projector while the rear portion 18'is approximately perpendicular to the axis of the projector and hence parallel with the diaphragm.

In some cases the trumpet is designed so that the total length from the reed to the mouth of the projector 17 is the same as the distance from the reed to themouth of the trumpet in the original reed horn, but accuracy in this respect is not required because the reed will accommodate its own vibration to the acoustic length of the combined trumpet and projector even when such precaution is not observed.

It will be obvious to those skilled in the art that when used in such a combination the trumpet serves to smooth out and in'rpart a musical quality to the note excited by the vilngtion of the reed. The acoustic waves generated therein are propagated through the projector to the outer air both directly and by reflection from the diaphragm. The diaphragm itself is excited to vibration both by such impact and also by the reflex or stationary wave which tends to establish itself in the projector by resonance thereof.

The various reactions and resonant effects produced by the above combination result in a note of greater volume projected more forcibly and having asharper or more alarming quality than the note produced from a similar reed operated trumpet having an ordinary bell mouth. The acoustic vibration and reaction of the diaphragm and of the thin air space between the diaphragm and front case wall contribute to this effect.

In the peculiar combination shown in the drawings where there is a cam piece 20 adapted to contact with the rotary cam 21 on the armature shaft 22 of a motor contained in motor case 23, the rotary cam frequently comes to rest in contact relation with the wear piece and in such case the vibration of the diaphragm set up by the acoustic vibrations from the reed trumpet may add a distinctly sharper and more alarming quality to the note.

' The preferred horn of the projector is shown in Fig. 2. In said figure the opening at the base of the projector is circular and the walls of the body portion diverge preferably along straight lines and preferablythe divergence is greater vertically than laterally, the side walls being nearly parallel or only slightly diverging. This results in a body portion having an oval mouth which curves into an oval bell mouth having its major axis substantially vertical. The device is preferably provided with a laterally extending bracket 25 whereby it may be attached to a vertical support as for instance one side of the dash-board of an automobilc. The various advantages of this form of projector and the details of the construction of the .cam and operating means are more fully set forth in my application above referred to.

Fig. 3 shows in detail the usual form of reed which is contained in the case t, Fig. 1. This form of reed will accommodate itself to the acoustic changes caused by substituting the transverse projector for the ordinary bell mouth of the reed trumpet but as a matter of fact, when the device is made as above described there seems to be very little change in the pitch of the note, the

noticeable change being the above described By arranging the reed operated trumpet weaves tion structure is secured.

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may require.

' The manner of the use of the device will be evident to those skilled in the art. The instrument is secured in any desired location, as for instance, atthe right hand side of the dash-board of an automobile and circuit connections 41 leadthrough a suitable battery 42 to a circuit closer 43 which may be located at any desired point on the vehicle but preferably upon the steering wheel. The bulb 1 may be located either on the steering Wheel or at the side of the drivers seat. l Vit-h this outfit the driver may manipulate the circuit closer 43 with so a finger of the left hand Without removing the hand from the steering wheel. The right hand may be used to squeeze the bulb 1 to sound the reed trumpet note and these acts may be performed simultaneously, al-- ternately or selectively as the emergency .circuit of horn motor may be carried tit) through the tube 2 and if desired the circuit closer may be arranged in the bulb 1. in the latter case, an ordinary squeeze on the bulb will. first sound the reed horn note, and then it the squeeze be prolonged the pressure will come on the circuit closer which will cause the Klaxon note to sound. Usually, however, the Klaxon note alone will be-i'elied upon for long distance signaling and for producing the maximum alarm in cases of emergency while the bulb operated reed horn may be used for ordinary warnings in city streets, improvement in the alarm quality of the note by reason of the reaction of the diaphragm and projector be in of especial advantage insomuch as it adcs a certain imperative quality to the otherwise too permissive quality of the reed horn note.

It will be noted that the case 7 is" provided with drain holes 7 7" such as described in my prior Patent No. 956,898 and more specifically in my Patent No. 957.101. Supplemental drainage may be supplied'ior the trumpet 5 at the lowermost point of the convolution and if desired the opening may be normally closed by spring pressed or other automatic valve adapted to open upon accumulation of water pressure in the trumpet. In many cases, however, it is desirable to prevent water cutering; the projector from finding its way into the reed trumpet and in the present just as in my cominercial form of Klaxondescribed 111 m above mentioned application to unbolt the front 'Z "s ction 7, Which carries the pro- The wires of the controller,

reed and trum a screw cap or by a and trumpet in combination with tudinal axis of the pro ector to an angle of 180 and again bolt the same in place. This brings the reed trumpet and the opening thereof on the upper side of the projector. In this case Water is not likely to find its way into the reed trumpetieven when driven by hose into the open end of the projector since the trumpet opening is above and moreover the point of splashing bf the whole stream will be. at the dia hragm which is considerably in the rear ot said opening.

It will be obvious that-instead of arranging the entire reed trumpet'on the lower side of the projector as shown'inthe drawing or on the upper side as just described, the convolutions of the trumpet may be arranged on the lower .side' of the projector and. the open end carried around and secured over an opening inthe sideior in the top '0 the projector.

While I have herein fully shown and described, and have pointed out in the append ed claims certain novel features of construction, arrangements, and operation which characterlzemy inventlon, it will be understood by those skilled in the art that varioils' omissions, substitutions and changes in the forms, proportions, sizes, and details of the device and of its operation, may-be made without departing from my invention.

I claim:

1; In a device of the class described, a pet in combination with a projector in communication with the open end of said trumpet, said projectorhaving an open mouth at one end and having the other end closed by an acoustic diaphragm located in such. proximity to the open end of the trumpet as to affect the sound waves emerg- -1ng from said open end.

2. In a device of the class described, a reed and trumpetin combination with a projector in communication with the open end of said trumpet, said projector having an. open mouth at one end and having the ptherend closed by an acoustic diaphragm located in such proximity to the open end of the trum- .pet asv to affect the sound Waves emerging from said open end.

3. In a device of'the class dcscribed,'a reed and trumpet in combination with a projector arranged transversely of the open end of said trumpet and in communication there with, said projector having walls diverging to an open bell mouth at one end and having the other end closed by an acoustic diaphragm located in such proximity to the open end or the trumpet as to affect the sound waves emerging from said open end.

4-. In a device of the class described, a reed a projector arranged transversely of the open end of said trumpet said projector ha ing an open mouth at one end and having the other end closed by an acoustic diaphragm located in such proximity to the open end of the trumpet as to affect the sound waves emerging from said open end, aconvolution of said trumpet being secured tosaid projector.

5. In a device ,of the class described, a reed and trumpet in combination with a projector arranged transversely of the open end of said trumpet said projector having an open mouth at one end and having the other end closed by an acoustic diaphragm located in such proximity to the open end of the trumpet as to affect the sound waves emerging from said open end, a convolution of said trumpet being secured to said projector at a point between the open end of said trumpet and the open mouth of said projector.

v 6. In a device of the class described, a reed and trumpet in combination witha projector arranged transversely of the open end if said trumpet saidprojector' having an oval bell mouth at one end and having the other end closed by an acoustic diaphragm located in such proximity to the open end of the trumpet as to affect the sound waves emerging fro-m said open end, a' convolution of said trumpet being secured to said projector in the rear of said bell mouth in the plane of the major diameter thereof. i

7. In a device of the class described, an acoustic diaphragm, a diaphragm case and a'resonant projector secured over an openingin said case, in combination with means for exciting relatively feeble vibration of said diaphragm by energy applied to the front side thereof and means for causing relatively powerful vibration thereof by energy positively applied at the rear side thereof.

8. In a device of the class described, an acmislic diaphragm, a diaphragm case having a. front wall spaced away from said diaphragm, a resonant projector secured over an opening in said case, in combination with means for exciting relatively feeble vibration of said diaphragm by energy of regularly recurring acoustic waves from a musical source, applied to the front side thereof and means for causing more violent vibrationthereof by energy applied at the rear. side thereof.

9. In a device of the class described, an

acousticdiaphragm, a diaphragm case and a resonant projector secured over an opening in said case, in combination with a trumpet communicating with said projector adjacent said diaphragm for propagating and introducing intermediate the ends of said resonant. projector and immediately adjacent to said diaphragn'i, regularly recurring acoustic vibrations constituting a note.

10. In a device of the class described, an acoustic diaphragm, a diaphragm case having a front wall spaced away from said diaphra gm, a resonant projector secured over an projector,

openingin said case, in combination with means for generating and introducing intermediate the ends of said resonant projector and adjacent the front faces of said diaphragm, regularly recurring acoustic vibrations constituting a note.

11. In a device of the class described, an acoustic diaphragm, a diaphragm case having a front wall spaced away from said diaphragm and aprojector secured over an opening in said case, in combination with means for exciting relatively feeble vibration of said diaphra m by acoustic waves applied at the frontside thereof and a cam for positively forcing violent vibration thereof by energy positively applied at the rear side thereof.

12. In a device of the class described, an acoustic diaphragm, a diaphragm case having a front wall spaced away from said diaphragm and a protector secured over an opening in said case, in combination with a reed and trumpet communicating with said projector adjacent said diaphragm for generating and introducing intermediate the ends of said projector and in operative proximity to the front of said diaphragm,

regularly recurring acoustic vibrations constituting a note.

13. In a device of the class described, an acoustic diaphragm, a diaphragm case having a front wall spaced away from said diaphragn'i, a resonant projector secured over an opening in said case, in combination with a reed horn havil'lg a trumpet formed in convolutions and arranged with its open end secured over an opening in the wall of said projector adjacent the front side of the diaphragm; a rotary cam in operative relation to the rear side of the diaphragm, and a motor shaft carrying a depending motor for the rotary cam, said motor and the convolution of said trumpet being arranged below the axisof the projector and in sul'istantially the same vertical plane therewith. i

14. In a device of the class described, a substantially straight projector. a suitable case, a vil'iratory diaphragm, a motor dcpending at the rear of said diaphragm substantially at right angles to the axis o the projector, and a reed horn having a trumpet formed in convolutions arranged in the angle between the projector and motor,:-:aid trumpet being in open communication with said projector at a point in such proxin'iilr to the said diaphragm as to allow said diaphragn'i to affect the sound waves emerging from said trumpet.

15. In :1 device of the class described. a substantiallv straightprojector, a suitable case, a 'vibratrn' diaphragm. a motor dcpcnding at the roar of mid diaphragm substantially atright angles to the axis of the and a reed horn having a llllliljmi',

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l0 v cent to the front formed in convolutions arranged the angle between the projector and motor, and having its open end communicating with the interior; of said projector at a point near the front side of the diaphragm.

16. In a device of the class described, a diaphragm horn in combination with a reed horn, the trumpet of which communicates with the interior of the projector of the diaphragm horn at a point immediately adjaof the diaphragm.

17. In a device of the class described, a diaphragm horn comprising a diaphragm, a casing for said horn, a substantially straight projector secured to the'casing on the for Ward side of the diaphragm, an actuating cam, located in the casing on the rear side of the diaphragm, and a motor depending at the rear of the diaphragm at substantially right angles to the axis of the projector for operating'said cam, in combination with a reed horn, having a trumpet formed in convolutions, arranged'in the angle between the projector and the motor and 111 substantially the same plane asthe motor and with its open end communicating with the interior of the projector at a point immediately adjacent to said diaphragm, the portion of the trumpet connected to said diaphragm, pro.- jecting substantially parallel to the diaphragm. v

' Signed at New York city, in the county of New York and State of New York, this 26th day of April A. D. 1910.

MILLER REESE HUTGHISON.

Witnesses: v

- GEORGE C. DEAN, IRVING M. OBRIEGHT.

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