US1468444A - Vibrator horn - Google Patents

Description

Sept. 18, 1923.

M. F. FITZGERALD VIBRATOR HORN Filed Aug. 24, 1920 Patented Sept. TS, 1923.

barren STATES Parana orrica.

MAURICE F. FITZGERALD, OF WINSTED, CONNECTICUT, ASSIGNOR TO THE FITZGERALD MFG. CO., 015 TOBBINGTON, CONNECTICUT, A CORPORATION OF CONNECTICUT.

VIBRATOR HORN.

'Appl ication filed August 24, 1920. Serial No. 405,698.

To all whom z't may concern.

Be it known that I, MAURICE F. Frrz- GERALD, a citizen of the United States, residing at Winsted,in the county of Litchfield, State of Connecticut, have invented certain new and useful Improvements in Vibrator Horns, of which the following is a description, reference beinghad to the accompanying drawing and to the figures of reference marked thereon. j V

This invention relates to vibrator horns, and more particularly 'to the electrically o erated-type.

. One oft-he objects of invention isto provide a simple device of few parts arranged compactly and, capable of producing an effectivesignal. i v 7 Another aim of this invention resides in constructing and arranging the solenoid armature so that itwill also act as a'means' foractuating the sound diaphragm.

Still another aimof this invention resides in arranging the solenoid armature sothat it will not only operate the sound diaphragm but it will also operate the make and break devices forthe same. 7 7

Another object of this invention resides iii-suitably mounting the 'soleno-ich'the combinedarmature and diaphragm striker, and the circuit breaker upon a common base plate within th horn casing. V

These and other objects will in part be obvious and will in partbe hereinafter more fully disclosed.

Referring more particularly to the accompanying drawing:

Figure 1 represents a side sectional view of the complete horn V Fig. 2 represents a plan view with" the cover removed;

Fig, 3 is a section through the mounting for the contact devices; .Fig. l'is a perspective view of the combined armature and striker, and a Fig. 5 is a perspective view of the'two parts of the circuit'breaker. Referring more particularly to the accompanyingdrawing, the horn comprises a casing 1 having bolted thereto the flange 2, by whichit may be secured: to any desirable part of an automobile. At its front portion, the casing 1 is provided in any suitable manner, with a trumpet or horn proper 3," while at the back portion,'the casing is the casing by means of bolts 5 and 6. The usual sound diaphragm 7 extendsvacross the mouth of the horn 3 and is secured at its periphery to the wall of the casing 1 by means of a series of bolts 8.

In. order to secure a compact arrangemerit andprovide a construction involving a minimum number of parts, the magnet 9 for operating the diaphragm striker is mounted Within the casing with its core 10 substantially parallel to the plane of the diaphragm, and a combined armature and diaphragm striker is pivotally mounted within the casing so that the armature portion 11 thereof lies across and adjacent to the core 10, while the diaphragm strikerjportion 12 therof lies in proximity to and directly over the center of the diaphragm. In order to effect this arrangement,- the armature and striker portions of the member are arranged at an angle to each other.

The preferred manner of mounting the magnet 9 and combined armature and striker member within the casing consists i providing a plate or base 13 spaced from the diaphragm 7 at its periphery by means of suitable spacing members 14, through which bolts 15 pass.

This plate is preferably made of sheet metal and is suitably slotted as at 16 to provide a rather broad tongue which, when bent at right angles to the base of the plate, forms an upstanding flange 17 to which is attached, in any desired manner, as by means of a rivet 18, the magnet 9. By bending upwardly this flange 17 there is thus formed a suitable opening 19 in the plate providing an aperture, permitting the free operation of the circuit breaker members as hereinafter described.

It is also preferred to pivotally mount the combined armature and diaphragm striker on this base plate, and to this end, the plate is slotted as at 20 and 21, and

the resilient tongues rolled back on them- 5 provided; with a r'emovablecover 4 held to order to permit it to lie immediately over the end of one member of the circuit breaker device. v V

The armature 11 is resiliently held in delicately adjusted position in proximity to the coreiot the magnet in any desired manner, the preferred construction is shown in the drawings, in which a leaf spring 27 is socured to the base plate 13 by means of one of the bolts 15, and is held normally pressed against the outer face of the armature 11. Another leaf spring 28 is likewise attached to the-'base'plate 13 as by means of the bolt 5 and projects across the base beneath the striker member 12, and acts to press the same upwardly. By means of the combined action of these two springs, the integral armature 11 and striker member 12 are maintained in adjusted position.

The circuit breaker is composed of an outer contact member 29 having the usual adjustable-"contact 30 and the lower (5011mm member 31 having an upstandingcontact 32 adapted to make electrical connection with the end of the contact 30. These'mombers 29 and 31 are separated as usualby an in'-.

contact members 29 and 31 as by means of the ears 39 and 40, and the electrical connection leading from the ear 10 is in turn connected to the contact post 11 on the easing. The other wire 39 is connected by the ear 4:0 to the winding of the magnet, and the other end of this winding is in turn connected by the wire'42 to a second contact post 43 on the casing.

In the operation of the device, when the magnet is energized, the armature is attracted to cause the striker portion 12 to contact against the sound diaphragm to create a signal. At the same time, the projecting end of the striker 12 depresses the leaf spring 35 of the contact member to cause the separation of the contacts 30 and 32 to break the circuit through the magnet, at which time, the springs 27 and 28 return the armature to its former position, and this cycle of operation is repeated as long as the exterior horn circuit is closed.

It will be seenthat the horn as above disclosed is a most advantageous construction, since it provides a compact arrangement. By constructing the armature and diaphragm striker integral and arranging themat an angle to each other, it is possible topivotally mount either member between the magnet and the diaphragm, and it is possible to mount-the magnet parallel to the diaphragm and to arrange the armature with the integral striker thereof between the solenoid and diaphragm, Furthermore, by extending the striker member 12 across the face of the diaphragm and arranging one member of the circuit breaker beneath the same, so thatthe circuit will be automatically interrupted by the operation of the combined armature and diaphragm striker, a horn is thus providedof a minimum of parts and arranged in a minimum space. It is also evident thatby this arrangement and by means of the resiliently balanced armature and striker member in which the springs 27 and 28 are arranged on oppositesides of :the pivotal. members 24: and 25, the armature is attracted very easily and quickly.

n is obvious that minor changes in the 7 details of construction and the arrangement of parts maybe made without departing from the spirit of the invention as set forth in the appendedcla ims. p

'Having thus described the invention, what I claim as new and desireto secure by Let- 'ters-Patent, is:- j 1. A vibrator horn comprising a casing having adiaphragm, afsupporting sheet metal plate arranged in said casing in spaced relation to said diaphragm, said plate having a struck up portion thereof forming an integral upstanding flange and an adjacent opening," a magnet mounted on said flange, a member pivotally mounted on said plate and having an armature portion arranged to be actuatedby said solenoid, and a striker portion adapted to pass through the opening in said plate and contact said diaphragm. p j

2., A vibrator horn comprising a casing having a diaphragm, a supporting sheet metal plate arrangedin said casing in spaced relation to said diaphragmpsaid plate having a struck-up portion thereof forming an.

integral flange and an adjacent opening, a magnet mounted on said ,fiange,a member pivotally mounted on said plate andhaving an armature portion arranged to be actuated by said'magnet, and a striker portionadapted to pass through the opening in said plate to contact -said diaphragm, and a circuit breaker, mounted on said;plate and having a portion extending under the striker member to be actuated thereby, said opening in said-plate beingsuitably arranged beneath said breaker to permit its free operation-by the striker.

3. Avibrator horn comprising a casing having a diaphragm, a plate mountedin said casing parallel to and spaced. relative from said diaphragm, a diaphragm striker mounted on said ;plate extendingacrossthe face of the diaphragm substantially parallel'thereto, a magnet mounted on said plate for operating said striker, a circuit breaker for said magnet, including a member also extending across saiddiaphragm substantially 5 parallel thereto with its free end under the projecting end of said striker and adapted to'be operated thereby, said plate being suitably apertured to permit the free ends of the striker and circuit breaker to pass therethrough. v

In testimony whereof, I affix my signature.

MAURICE F. FITZGERALD.

Images