US1684906A - Signaling device - Google Patents

Description

Sept. 18, 1928. 1,684,906

F. W. BILLIG S IGNALING DEVICE Filed June 16, 1925 I/VV NTOR ii J aTTORZ cys Patented Sept. 18, 19 28.

UNITED. STATES v 1,684,906 PATENT OFF-ICE,

rnnnw. ammo, or .m'cxson, MICHIGAN, ASSIGNOB at run sranxs-wrrnmeror COMPANY, or ucxson, mcmem, a conrom'non or x10.

' 1 SIGNALING DEVICE.

Application filed June 16, 1925. Serial No. 87,458.

This invention relates to a certain new-and improved signaling device, and more particularly to a signaling device or horn of the magnetically-actuated type.

The main object of the invention s the production of an efiicient signaling device of substantial construction, and of economic manufacture and arrangement, and which will produce a signal of the'desired character,

m pitch and amplitude.

Other objects and advantagesrelate to the details of the structure-and the form, position, arrangement and association of the parts .thereof allfas will more fully appear from thefollowing description, taken in connection withthe accompanying drawings, in which Figure' 1 is an elevation of a horn of this invention. j

' Figure 2'is a section taken on line 2+2,

Figure 1. I 1

.The str uctureof signaling device here illustratedis of the magnetically operated diaphragm type, and as shown, comprises a rear dia hragm case-section 1- having its centra portion dished and of substantially cylindrical cup-shape, and formed at its central portion with an opening for the reception of the magnet or magnetic field --2-. p The diaphragm 3--is clamped between the rear no diaphragm case section, and a ring or washer 6-- interposed between the front diaphragm case section -4 and the edge of the diaphragm, bolts 5 being provided for clamping the case sections, the washer and the diaphragm to ether.

The front diap ragm case-section 4- carries a suitable projector 95. The magnet --2- may be secured to the diaphragm case section in any suitable manner not herein w necessary to illustrate or describe, and as illustrated, the magnet is formed with a continuous channel or groove -12- which surrounds the central passageway and is adapted to receive a field coil -13-. This field coil lies wholly forward of the rear surface of the magnet 2 in the assembled structure so that the armature 19 in the operation of the structure will contact directly with the rear surface of the magnet 12.

The diaphragm '3 as here illustrated, is provided with a central opening surrounded by a reinforcing internally threaded ring or collar 14 permanently and rigidly secured in any suitable manner to the edge of the diaphragm bordering the central opening.

separated from the ring 16 'by means of washer '-18-.' =IB0lt----17-- extends entirely spherically shaped so as to seat tig ,A sleeve -15- is provided with an externally threaded ortion for co-action with the internally t readed collar --14 which constitutes a rigid portion of the diaphragm and one end of the sleeve projects forwardly from on the diaphragm and may flatted upon diametrically opposite sides for the reception of a washer or ring -16 whichhas a noncircula-r opening adapted to fit the end of the sleeve 15 so that the ring can be -used to rotate the sleeve, and the rim' is. secured in position uponthe end of thev leave by means of a headed bolt-'.l7 and is clamped against the bushing .--14+ at .thecenter of the-adia phragm, the head of the bolt being preferably through the sleeve 15- and projects from the rear: portion thereof, andpa'sses through the armature -19, washer +20 leaf 7o .spring' 21,- and is threaded into the substantiallylfiat base ,22' of the yoke --23 which rests upon the outer surface of the spring --21-.-

For the purpose of effecting a rigid and tight engagement between thediaphragm -3-, disk 16', sleeve '15, bolt 17--, armature 19-, washer 20-, spring '21-, and yoke 23' -the rear end of sleeve -15 is somewhat enlar ed and.

htly in a substantiallysimilarly spherically shaped recess in the adjacent side of the armature 19--, andthe opposite side of the armature is formed with a fiat recess of circular form for the reception of washer 20-.

Washer 26 is provided with a substantially spherical seat for contact with the rear curved or. spherical portion of the washer 20, such washer 26 being interposed between the spring --2land the washer -20 and having recesses for the reception of the lugs -24 formed on the flat base -22- of the yoke 23, and which lugs extend through similarly shaped recesses in the spring 2l, but do not contact with the rear spherical surface of washer-20.

The main feature of this invention resides in the form and construction of the yoke 23-. This yoke is formed of a single piece of sheet metal, as for instance brass, and has its base 22' formed with a central internally threaded opening for the reception of the rear end of bolt 17 and also with the lugs -24 projecting from the bottom of the base. An u right 80rises mm the base -22 an has an arm 81 bent at substantially right angles so as to lie parallel with but spaced from the base 22,

.and is formed with an internally threaded opening aligned with the bolt -17-v which opening is adapted to receive an ad ustable screw 41 adapted to be locked in any position of adjustment by means of nut 82. The adjustable screw -41- carried by the oke 23-; acts to operate the make 'and hreak 'mecha nism for the circuits of the horn, and to effect this purpose a built-up edestal is provided at the rear of andjcarr e by the diaphragm case-section 1- and this pedestal 83 carries the contactswhich are intermittently separated and brought to ether as hereinafter described. This pedesta may consist of anumber of separate parts secured together and to the case section by means of ,one or more bolts, 57, and the pedestal includes a rigid bar -34-, one end of which is mounted upon the bolts 5T- and rigidly secured in the pedestal, and the other end of whichprojects inwardly from the pedestal towardthe yoke 23 and carries an adjust.- able contact member38-, which is adapted to intermittently. contact with a second contact member -37 carried by. a spring-arm 32 which in like manner hasone of its ends mounted inthe pedestal 83.. The bar -34- and the s ring-arm 32- are insulated from each ot er in the pedestal in any suitable and well-known manner. The flexible arm 32 extends beyond the contact -37 and into the space between the base 22eand the overlying arm 81 of the yoke, and is provided at its end with a cu -shape member 39-- containing any suita is hard, insulatin contact material for contact with t e adjustable screw -41 carried by the yoke -.23-.

It will be obvious that as this yoke 23- moves back and forth with the armature,the adjacent screw will act to separate the contacts 37 and -38, and then permit their engagement. The yoke 23 as shown, has a rib -84- centrally disposed of the upright -80 and extending upwardly around the bend into the arm 81- to provide the necessary rigidity for this portion of the yoke, Q 7 I The horn so far described constitutes in itself a useful article of manufacture, but for the pur se of providing improved results of a su stantial nature, the bolt 17 is formed with an extension 85 which may be formed with or secured to the bolt in an suitable manner, and for the purpose of i lustration, the forward front rtion of the bolt-- 17-- is formed with a t readed recess adapted ,to receive the threaded end of the extension member -85- so that the two V partsare rigidly and firmly secured together and constitute in effect a unitary bolt orrod. The forward end of the extension rod 85- terminates forward of and outside of the projector 8 and is as shown reduced and externallythreaded, and extends through the central portion of a sprin bar -86, which has its opposite ends rigi ly secured to dia metrically opposedportions of the forward end of the projector 95-, as for instance, by screws 87 as shown, altho; any other suitable means of attachment may be utilized. This spring-bar may as shown be corrugated for the purpose of giving additional strength.

Washers 88 and 89 are mounted on the rev duced threaded end of bolt upon opposite sides of the sprin -bar 86 and a disk 90 is monntedon the ro 85 forward of thewasher 89 and is secured in position thereon in any suitable manner, as by nut 91, washer 92 being interposed between the nut and the disk. The isk, or vibratory body 90 is preferably of an area slightl less than the area of the ,forwardend of t e projector, and is wholly outside the projector, and is preferabl formed of bell metal or similar material, an I have discovered that a disk of suitable size and formed of a suitable material when disposed wholly forward of the projector and connected to the armature 19 for direct actuation thereby, produces a newand highly elficient result particularly of the carrying power in the resultant note of the horn.

" Obviously the disk 90 may be connected to the armature 19 in various waysfor actuation thereby, and maybe suriported in many and varlousways, and altho have shown and described a specific structure as illustrative of anembodiment of the invention, I .do not desire to restrict myself to the-details of the structure, as various changes and modifications ma bemade within the scope of the ap ded claims. a

it? 1. orn comprising a dia'phra a rejector extending forwardly from t he iiaphragin, a vibratory disk disposed outside the projector, and means for simultaneously the diaphragm and said vibratory 2. A horn structure com rising a diaphragm, a pro ector exten ing forwardly fromthe' diaphragm, a free edge vibratory member approaching in cross-sectional area the cross-sectional area of the front open end of the rojectorand disposed outside of and forwar lg of the projector, and means connecting t e said vi ratory member to the diaphragm for simultaneous bodily movement therewith.

In witness whereof I have hereunto set my hand this 29th day of May, 1925. t

- FRED W. BILLIG.

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