US1220280A - Audible signaling device. - Google Patents

Description

J- R. SIMPSON.

AUDBLE SGNALING DEViCE.

APPLICATION FILED APR. 8, 1914.

1,220,280. Patented Mar. 27, 1917.

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John P. lmpson.

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AUDIBLE SIGNALING DEVICE.

APPLICATION FILED APR.8, 1914.

1 220,280. Patented Mar. 27, 1917.

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AUDIBLE SIGNALING DEVICE.

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JOHN R. SIMPSON, 0F TROY, OHIO.

AUDIBLE SIGNALING DEVICE.

Specification of Letters Patent.

Patented Mar. 27, 1917.

Application filed April 8, 1914. Serial No. 830,496.

To all whom it may concern:

Be it known that 1, JOHN R. SIMPSON, a citizen of the United States, residing at Troy, in the county of Miami and State of Ohio, have invented certain new and useful Improvements in Audible Signaling Devices, of which the following is a specification.

This invention relates to improvements in audible signaling devices especially adapted for automobiles, boats, factories, and the like; the invention relating more particularly to that type ofsignaling device which employs a metal diaphragm for producing sounds.

One of the objects of the invention is to provide a sound-producing device which will be capable of producing sounds of great volume, and to further provide for quickly and readily adjusting the devices to give greater or less intensity of sound, in a manner which will obviate the necessity of any adjustment of the position of the source of power required for the mechanical movements.

A further object of the invention is to provide automatically operating means for changing the tone, whereby at least two distinct sounds of different intensity are produced by the same ap aratus.

A further object 0 my invention is to provide an electrically-operated audible signaling device whereby sounds of different intensity may be produced in a ready manner so that the device will be capable of producing the majority of signals given thereby in sounds of low intensity thereby effecting a considerable economy in the consumption of the current.

A further object of my invention is to provide for initially reducing the load on the motor, thus can )ling the motor to start and acquire sufficient momentum before the heavier load for the sounds of the greater intensity is placed thereon.

A further object of my invention is to provide, in an electrically-operated audible signaling device, means whereby upon the initial operation of the devices, a resistance will be placed in circuit with the motor to reduce the volume of current through the motor, said resistance acting in the nature of a starting box to enable the motor to start upon a comparatively small amount of current and being automatically thereafter cut out to enable the motor to be supplied with the maximum amount of current.

A further object of the invention is to provide means whereby the vibratory movements of the diaphragm may be varied to give greater or less intensity of sound although actuated from the same motive source for the loud or soft tones.

A further and more specific object of the invention is-to provide, in an audible signal mg device employing a vibratory diaphragm and a motor for operating the same, connecting devices between said motor and diaphragm in the nature of the toggle joint, together with a movable abutment for the same, so that said toggle joint will be given a greater or less movement in the direction of the diaphragm to causesaid diaphragm to move to a greater or less extent for the purpose of producing sounds of greater or less intensity.

A further object of the invention is to simplify the construction and makemore effective the operation of devices of the character referred to.

My invention consists in the various constructions hereinafter described. and set forth in the claims.

In the accompanying drawings,-

Figure 1 is a top plan view of an apparatus embodying my improvements, some of the supports, the outer casing and the resonator or horn being partly broken away; the diaphragm and the main support being shown in section.

Fig. 2 is a diagrammatic view illustrating the electrical circuits employed in my apparatus.

Fig. 3 is a side elevation of the apparatus shown in Fig. 1.

Fig. 4 is a section on the line 44 of Fig. 1.

Fig. 5 is a top view in detail of one of the operating parts.

Fig. 6 is a side elevation view of the same.

Fig. 7 is a top plan of certain of the parts of the apparatus illustrating a modification.

Fig. 8 is a top plan of some of the parts partly shown in section illustrating another modification,

Fig. 9 is a top plan of some of the parts illustrating a further modification.

Like parts are represented by similar characters of reference in the several views.

In the said drawings, 1 represents a circular support open at the center and having secured to one side thereof about the circular opening therein a forwardly extending resonator in the nature of a horn 2; this support 1 having any suitable means, (not shown) for attaching it to a motor vehicle or other place where the apparatus is to be used.

The support 1 has a rearwardly extending peripheral flange 1 and within the flange portion thereof is secured a metal diahra m 3 b a rin 4' screws 5 )ro'ectin through the ring and diaphragm into the support 1 securely fastening all the parts together; circular washers 6 being preferably interposed between the diaphragm and the ring and support respectively to more securely hold the diaphragm in position. Secured to the lower portion of the ring 4 is a plate 7 having a rearwardly extending integral shelf 8 which provides a support for the operating parts. Suspended from the shelf 8 is an operating device, shown in the present instance as an electric motor 9, the armature shaft 10 of which is extended up through a suitable bearing 11 to a point substantially in line with the transverse center of the diaphragm, where it has secured thereto a cam wheel 12 (shown in detail in Figs. 5 and 6) having about the periphery thereof a series of cam faces 13.

Pivotally connected to a boss 1+ secured to the center of the diaphragm 3 and projecting rearwardly therefrom is a togglejoint consisting of two pairs of members 15 and 16 pivoted together by the pin 17 and pivotally connected at their rear ends to the head 18* of a plunger 18 by the pin 19; a pin 20 serving to pivotally connect the members 15 to the diaphragm boss 14. The plunger 18 is slidably arranged within the sleeve 21 supported in a standard 22 extending upwardly from the shelf 8. A flat spring 23 secured at one end to a bracket 21, which projects laterallv from the standard 22, and having its free bifurcated end projected between the head 18 and the pin carried by the plunger, serves to force the plunger rearwardly to elongate the togglejoint. The pin 25 projects from each side of the plunger and operates in slots 26 in the fixed sleeve 21 so as to prevent the plunger and the toggle-joint members from turning.

Means are provided for regulating the rearward movement of the plunger 18 under the tension of the spring 23, so as to regulate the throw of the toggle under the action of the cam wheel 12 and thus regulate the vibration of the diaphragm. In other words, means are provided for regulating the throw or elongation of the toggle under the action of the cams so as to cause said toggle to vibrate the diaphragm to a greater or less extent. In all of the figures excepting Fig. 9. this regulating means operates automatically in the following manner:

Supported from a bracket 27 projecting from the standard 22, is a magnet, 28 representing the coil and 22-3 the poles, the armature lever 29 of which is pivotally connected to a rearwardly extending boss 30 secured to the standard 22. One end of the lever 29 carries the armature 31 and to the other end of the lever 29 is connected a spring 32 also connected to the bracket 24 to normally hold the lever 29 in the position shown in Fig. 1, against the adjustable stop 24*. A screw 33 extending through the lever near the pivotal point thereof has its inner end in line with the ends of the plunger 18 so as to form an abutment therefor; the spring 32 being of sufficient tension to overcome the tension of the spring 23 and also the resilience of the diaphragm so that the screw 33 will form an abutment so as to ordinarily prevent any rearward movement of the plunger and consequent elongation of the toggle-joint. If the magnet 28 however should be energized so as to attract the armature 31 and rock the lever upon its pivotal point, it will be seen that the screw 33 will be moved rearwardly away from the end of the plunger to a slight extent, thereby permitting the plunger to move rearwardly and a consequent slight elongation of the togglejoint take place. The result of this is that when the parts are in the position shown in Fig. 1, the toggle will have a greater throw in the forward direction under the action of the cam wheel than when the magnet 28 is energized for the reason that the energization of the magnet permits the toggle to straighten out or elongate to a slight extent so that the consequent throw thereof in a forward direction will be less.

Means are provided for controlling these regulating devices so that the magnet will" be cut in or out as desired. In Fig. 2 is illustrated the circuits for the motor and magnet in which 34:, 35 and 36 represent three contacts. If contact 34 is pressed against the contact 35, a circuit will be established through wire 37, battery 38, wire 39, motor 9, wire 42 to contact 35. The energization of magnet 28 draws the screw 33 rearwardly away from the end of the plunger and permits the elongation of the toggle-joint so that the diaphragm will be given throw in a forward direction and consequently a minimum vibration thereof will take place for the low tones. If all three contacts are pressed together, the circuit will be from contact 34, wire 37, battery 38, wire 39, motor 9, and wire 40 to contact 36, the magnet being short circuited, in consequence of which the screw 33 will act as an abutment to hold the toggle-joint in its extreme bucwire 40, wire 41, magnet 28, and

a minimum kled condition, thereby causing a greater throw thereof in a forward direction under the action of the cam and a consequent greater movement or vibration of the diaphragm, in the high tones. The screw 33 may be adjusted to any position desired in the lever and held in its adjusted position by the nut 13 so as to regulate the intensity of both the low and high tones. It will, therefore, be seen that the low and high tones may becontrolled from a single push button, the operator pressing the button but part way in for the low tone and to the fullest extent for the high tone.

In Fig. 7 there is shown a modification of the devices for regulating the throw of the toggle. In this case the armature 31 of the magnet 28 is connected by a link 4A to a bifurcated wedge-shaped slide 45, slidably mounted in guides 46 on a supporting piece 22 which may be connected with the standard 22. This bifurcated wedge 15 straddles the sleeve 21 and the ends of the pin 25 are extended sufficiently beyond the plunger and sleeve so that the said wedge will lie in the path of movement thereof and form a stop therefor. When the magnet is denergized, the wide part of the slide will be held in the path of the pin 25 by the spring 48, connected with the armature, and when the magnet is energized, the slide will be withdrawn so as to present the narrow portion thereof in the path of the pin, thus permitting the elongation of the toggle in the manner before explained. The plunger and toggle in this case are influenced by a bifurcated flat spring 49, one end of which is attached to a bar and the other bifurcated end of which bears against the pin 25. This bar 50 also extends through the guides 46 between the slide 45 and the support 22. One end of the bar is pivoted to the support 22 as at 51 and a spring 52, placed about a pin 53 projecting from the support 22 and interposed between the collar 54: and the said bar, tends to force the bar against the support. An adjusting screw 55 in said support and bearing against the opposite end of the bar from the pivotal point thereof, serves to adjust said bar in a forward direction so as to move the wedge 45 forwardly so that means are thus provided for regulating the intensity of both the low and high tones.

In Fig. 8 another modification is shown in which the bar 50 is dispensed wit In this case the wedge 45 may pass through apertures 56 and 57 in the sleeve 21 and plunger 18 respectively. The aperture 57 in the plunger may the pin 25 passes through so that the pin 25 will cooperate with the sliding wedge. coil spring 58 interposed between the end of the sleeve 21 and the collar 59 on the end of the plunger 18 serves to force the plunger rearwardly to elongate the toggle.

be at the point where In Fig. 9 a further modification is shown in which the automatic two-toned regulating devices are dispensed with. In this case, an adjustable stop, in the nature of a screw 60 is provided located in a fixed support 61 back of the standard 22 in line with the rear end of the plunger 18; nuts 62 and ()3 being employed to lock the screw in its adjusted position. This does not permit of the two tones, for the screw may be adjusted to regulate the intensity or volume of a single tone.

By the constructions described, it will be seen that I have provided a device in which different tones may be readily produced; that I am also enabled to adjust the devices in a. ready manner to produce sounds of different intensity on either the low or high tones.

It Will be seen that by the constructions described, where an electric motor is employed, the first operation of producing an alarm removes a certain portion of the load from the motor by permitting a slight elongation of the toggle-joint, thus permitting the motor to start more readily, particularly where the relation of the contact point of the toggle with the cam is such that the greatest tension or weight is placed thereon.

It will be further seen that upon the initial operation of magnet will be placed in circuit with the electric source so as to cause the same to act in the nature of a starting box to reduce the volume of current through the motor.

It will further be seen that in producing the low tone the magnet will be in circuit and act in the nature of a resistance to cause the motor to consume less current than in the production of the high tones, and that, inasmuch as the great majority of the signals are of the low tone variety, a considerable saving in the consumption of current is effected.

This also has the effect of reducing the speed of the motor on the low tones, but so soon as the magnet is cut out in the manner described for the high tone, the speed of the motor will be correspondingly increased.

By this arrangement, for the low tones the extent of movement of the diaphragm is not only decreased, but the frequency of the vibratory movements is likewise decreased, while for the high tones the extent of movement of the diaphragm will be increased and likewise the frequency of the vibratory movements increased.

Having thus described my invention, I claim:

1. In an audible signaling apparatus, a diaphragm, an operating device immovable in the direction of said diaphragm, connecting devices connected with said diaphragm and operatively associated with said operating device, and controllable means dependent upon the operation of said apparatus for producing an alarm the 9 varying the throw of said connecting devices.

2. In an audible signaling apparatus, a diaphragm, an operating device, a movable connection connected with said diaphragm and operatively associated with said operating device, an abutment for said connection to limit the movement thereof in one direc tion, and controllable means dependent upon the operation of said apparatus for adjusting said abutment. 4

3. In an audible signaling apparatus, a diaphragm, an operating device, a toggle joint connected with said diaphragm and operatively associated with said operating device, an abutment to limit the movement of said joint in one direction, and means for adjusting said abutment to vary the throw of said toggle.

4. In an audible signaling apparatus, a diaphragm, a rotatable cam wheel, a toggle joint having one end connected to said diaphragm and operatively associated with said cam wheel, an abutment for the opposite end of said toggle joint, and means for adj usting said abutment.

5. In an audible signaling apparatus, a diaphragm, a rotatable cam wheel, a toggle joint having one end thereof pivotally connected with said diaphragm, a plunger pivotally connected to the opposite end of said toggle joint, a bearing for said plunger, and an adjustable abutment for said plunger.

6. In an audible signaling apparatus, a diaphragm, operating mechanism immovable in the direction of said diaphragm for imparting vibratory movements to said diaphragm having a single source of power, and controllable means dependent upon the operation of said apparatus for varying the movement of said operating mechanism.

7. In an audible signaling apparatus, a diaphragm, an operating mechanism for imparting vibratory movements to said diaphragm, a movable abutment for said operating mechanism, and controllable means dependent upon the operation of said apparatus for changing the relation of said abut ment with respect to said operating mechanism to vary the movements of said mechanism.

8. In an audible signaling device, a diaphragm, an operating mechanism for said diaphragm to impart vibratory movements thereto, and electrically-operated means independent of said operating mechanism for varying the movements of said operating mechanism.

9. In an audible signaling device, a diaphragm, an operating mechanism for said diaphragm to impart vibratory movements thereto, devices independent of said operating mechanism for regulating the extent of movement of said operating mechanism, means for placing said operating mechanism into operative condition, and means dependent upon the operating mechanism for simultaneously controlling said regulating devices.

10. In an audible signaling device, a diaphragm, an operating mechanism for said diaphragm to impart vibratory movements thereto, a movable abutment for said operating mechanism, an electrically-operated device connected with said abutment, and means for controlling said electrically0perated device to change the relation of said abutment with respect to said mechanism to vary the movement thereof.

11. In an audible signaling device, a diaphragm, an operating mechanism for said diapl thereto, a movable abutment for said operating mechanisi an electrically-operated device connected with said abutment, means for throwing said operating mechanism. into operating condition, and means for simultaneously controlling said electrically-operated device to change the relation of said abutment with respect to said mechanism to vary the movement thereof.

12. In an audible signaling device, a diaphragm, an operating device, devices connected with said diaphragm and operatively associated with said operating device, and electri ally-controlled means for varying the throw of said connecting device independently of said operating device.

13. In an audible signaling apparatus, a diaphragm, an operating device, devices connecting said operating device with said diaphragm and operatively associated with said operating device, means for controlling the operation of said operating device, and electrically-controlled means for varying the throw of said connecting device independently of said operating device.

14. In an audible signaling apparatus, a diaphragm, an operating device, a movable connection connected with said diaphragm and operatively associated with said operating device, a movable abutment for said connection to limit the movement thereof in one direction, and electrically-controlled means for adjusting said abutment to cause the same to permit a variation in the movement of said connection.

15. In an audible signaling apparatus, a diaphragm, an operating device, a movable connection connected with said diaphragm and operatively associated with said operating device, an abutment for said connection to limit the movement thereof in one direction, means for controlling said operating device, and electrically-operated means for simultaneously adjusting said abutment to cause the same to permit a variation in the movement of said connection.

*agm to impart vibratory movements diaphragm, an operating device, a togglejoint connected with said diaphragm and operatively associated with said operating device. an abutment to limit the movement of said joint in one direction. and electrically-controlled means for adjusting said abutment to vary the throw of said toggle.

17. In an audible signaling device, a diaphragm, an operating device, a toggle joint connected with said diaphagm and operatively associated with said operating device, an abutment to limit the movement of said joint in one direction, means for controlling said operating device, and electrically-operated means for simultaneously adjusting said abutment to vary the throw of said toggle.

18. In an audible signaling apparatus, a diaphragm, a rotatable cam-wheel, a toggle joint having one end connected to said diaphragm and operatively associated with said cam wheel, an abutment for the opposite end of said toggle joint, and electricallycontrolled means for adjusting said abutment to vary the movement of said toggle joint.

19. In an audible signaling apparatus, a diaphragm, a rotatable cam wheel, a toggle joint having one end connected to said diaphragm and operatively associated with said cam wheel. an abutment for the opposite end of said toggle joint, means for controlling said cam wheel, and electrically-operated means for adjusting said abutment to permit a variation in the movement of said toggle joint.

20. In an audible signaling apparatus, a diaphragm, a rotatable cam wheel, a toggle joint having one end thereof pivot-ally connected to said diaphragm, a plunger pivotally connected to the opposite end of said toggle joint, a bearing for said plunger, an adjustable abutment for said plunger. and electrically-operated means for controlling said abutment to permit a variation in the movement of said toggle joint.

21. In an audible signaling apparatus, a diaphragm, a rotatable cam wheel, a toggle joint having one end thereof pivotally connected to said diaphragm. a plunger pivotally connected to the opposite end of said toggle joint, a bearing for said plunger, an adjustable abutment for said plunger, means for controlling said cam wheel, and electrically-operated means for simultaneously controlling said abutment to permit a variation in the throw of said toggle joint.

22. In an audible signaling apparatus, a diaphragm, an electric motor, operating mechanism operated by said motor and connected with said diaphragm to impart vibratory movements thereto, electrically-operated devices for varying the movements of said operating mechanism, and a switch for controlling said motor and electrically-operated devices.

23. In an audible signaling apparatus, a diaphragm, an electric motor, operating mechanism operated by said motor and connected with said diaphragm to impart vibratory movements thereto, an adjustable abutment for said operating mechanism, electrically-operated devices connected with said abutment to adjust the relation of the same with said mechanism, and a switch for controlling said motor and electrically-operated devices.

24. In'an audible signaling device, a diaphragm, an electric motor, a cam wheel operated by said motor, a toggle joint connected with said diaphragm and operatively associated with said cam wheel, an abutment to limit the movement of said joint in one direction, an electrically operated device connected with said abutment to adjust the same to vary the throw of said toggle, and a switch for controlling said motor and electrically-operated device.

25. In an audible signaling apparatus, a diaphragm, an electric motor, a cam wheel connected with said motor, a toggle joint having one end connected to said diaphragm and operatively associated with said cam wheel, a plunger pivotally connected to the opposite end of said toggle joint, a bearing for said plunger, an adjustable abutment for 9 said plunger and electrically-operated devices connected with said abutment for changing the relation of the same with respect to said plunger, and a switch for controlling said motor and electrically-oper- 100 ated devices.

26. In an audible signaling apparatus, a diaphragm, an electric motor, operating mechanism connected with said diaphragm and operatively associated with said motor, 105 adjustable devices for regulating the movement of said operating mechanism comprising an electro-magnet, and means for establishing a circuit both through said magnet and motor or through said motor alone.

27. In an audible signaling apparatus, a diaphragm, an electric motor, operating mechanism connected with said diaphragm and operatively associated with said motor, adjustable devices for regulating the move- 115 ment of said operating mechanism comprising an elcctro-magnet, and means for energizing said magnet and establishing a circuit through said motor and then deiiner gizing said magnet.

28. In an audible signaling apparatus, a diaphragm, operating mechanism for imparting to said diaphragm vibratory movements, regulating devices for controlling the extent of movement of said operating mech- 125 anism to obtain a plurality of tones, and adjustable means associated with said regulating devices to also control the movement of said operating mechanism to regulate the intensity of said tones.

29. In an audible signaling apparatus, a diaphragm, an operating device, a toggle joint connected with said diaphragm and operatively associated with said diaphragm, regulating devices for controlling the extent of movement of said toggle joint to obtain a plurality of tones, and adjustable means associated with said regulating devices to also control the movement of said toggle joint to regulate the intensity of said tones.

30. In an audible signaling apparatus, a diaphragm, a rotatable cam wheel, a toggle joint associated with said cam wheel and connected with said diaphragm to impart vibratory movements thereto, regulating devices for controlling the extent of movement of said toggle joint to obtain a plurality of tones, and adjustable means associated with said regulating devices to also control the movement of said toggle joint to regulate the intensity of said tones.

31. In an audible signaling device, a diaphragm, an electric motor, a cam wheel connected with said motor, a toggle joint connected with said diaphragm and operatively associated with said cam wheel, regulating devices comprising a magnet for controlling theextent of movement of said toggle joint to obtain a plurality of tones, adjustable means associated with said regulating devices to also control the movement of said toggle joint to regulate the intensity of said tones, and means for controlling said motor and magnet.

In an audible signaling apparatus, a diaphragm, an electric motor, operating mechanism between said motor and diaphragm for imparting to said diaphragm vibratory movements, regulating devices for controlling the extent of movement of said operating mechanism to obtain a plurality of tones comprising a magnet, adjustable means associated with said regulating mechanism to regulate the intensity of said tones, and means for controlling said motor and magnet.

33. In an audible signaling apparatus, a diaphragm. a motor, mechanism connected with said diaphragm and operatively associated with said motor for imparting vibra tory movements to said diaphragm, means for controlling the movement of said mechanism to regulate the extent of the vibratory movements of said diaphragm, and means for controlling the speed of said motor to correspond with the variation in the vibratory movements of said diaphragm.

34. In an audible signaling apparatus, a diaphragm, an electric motor, mechanism connected with said diaphragm and operatively associated with said motor for imparting vibratory movements to said diaphragm, devices for controlling the movement of said mechanism to vary the extent of the vibratory movements of said diaphragm, and means for simultaneously varying the speed of said motor to correspond to the variation in the vibratory movements of said diaphragm. 35. In an audible signaling apparatus, a diaphragm, an 'electric motor, mechanism connected with said diaphragm and operatively associated with said motor for imparting vibratory movements to said diaphragm, devices for controlling the movement of said mechanism to vary the extent of the vibratory movements of said diaphragm, an electro-magnet for controlling said devices, and means for cutting said electro-magnet into or out of circuit with said motor for controlling the speed of said mo tor to correspond with the variation in the vibratory movements of said diaphragm.

36. In an audible signaling apparatus, a diaphragm, an electric motor, operating mechanism connected with said diaphragm and operatively associated with said motor to impart vibratory movements to said diaphragm, devices for regulating the movement of said operating mechanism to vary the vibratory movement of said diaphragm to cause the same to give low and high tones, an electro-magnet for controlling said devices in series with said motor, and electric switching devices for placing said magnet in circuit with the motor for the low tones and for cutting said magnet out of the circuit for high tones to thereby control the speed of said motor to correspond with the extent of movement of said diaphragm.

In testimony whereof, I have hereunto set my hand this 1st day of April, 1914.

JOHN R. SIMPSOV.

\Vitncsses CHAS. I. VVELoII, Esrrnnn E. PFEIFER.

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