US1306493A - marsico - Google Patents

Description

G. R. MARSICO.

SIGNAL.

APPLICATION FILED IUNEZB. 1918.

Patented June 10, 1919.

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.IIIIIIIIII E Dn, OM T N E V W G. R. MARSICO.

SIGNAL.

I APPLICATION FILED JUNE 28| lgla. 1 ,306,493. Patented June 10, 1919.

2 SHEETS-SHEET 2.

UNITED sTATEs PATENT oEEIoE.

cnam-n. MAnsIco, or BROOKLYN, NEW Yoan.

` SIGNAL.

Speci'catio'n of Letters Patent. Patented June 10, 1919,

' Application med :une as, isis. ser1a1m.242,445.

type have included a rotor, a ratchet wheel and detent, -whereby motion of the rotor will be checked in one direction, and mechanism for advancing the detent against the ratchet wheel to place the rotor in action. To the rbest of my knowledge, the detent mentioned is always yieldingly held in contact with the ratchet wheel and as a consequence thereof, undue friction and wear and tear are set up `between the parts and the eiliciency of the structure is thereby seriously impaired, it being impossible through the production of such friction to obtain a maximum working action of the rotor against the diaphragm.

In my invention which I willfully de scribe hereinafter, I lhave provided a structure wherein the diaphragm is displaced in a manner whereby the emitted sounds will\be of a clear pitch and greater magnitude to insure a loud quick and sharp signal of uniform intensity and in practice, I employ a heavy rotor, a revolving hanger, and means on the vhanger adapted to be actuated by centrifugal action and engage with the rotor at a point remote from the axis thereof and thereby augment the leverage force of said means against said rotor and thus accelerate ulsation of the diaphragm.

I more speci cally provide a rotor having an external striking surface adapted to coact with the anvil of a diaphragm and an internalratchet surface, the latter coacting with centrifugally advanced dogs or detents-which are movably mounted upon a revolving lhanger and adapted to be brought into positive contact with the ratchet surface when motion is transferred to the hanger. v Y y Another object of the invention is to provide a horn having its diaphragm with a fixed anvil and mechanlsm coacting relatively broad provided with the anvil to displace' the diaphragm,

the said mechanism includingl actuating means and all of `which are mounted from a vcommon support which is adjustable with relation to the anvil whereby proper contact Irbetween the anvil and convenlence of the user.

Another object of the invention is to provide a horn including a diaphra provided With an-anvil, a ratchet provi ed with an external striking'surfaceand an internal ratchet surface, a revolving hanger, and

Identical detents supported from the .hanger 1n coacting relation with the ratchet surface and reversibly arranged upon the hanger so thaty when the'detents are worn atV one side, their positions may be reversed to insure their proper contact with the ratchet surface. l A still further object of the invention is to provide -a horn having a diaphragm and a coacting rotor, the vlatter having an external striking surface and an' internal ratchet surface, the teeth of the latter bein and arranged to coact witg detentsv which are provided with broad coactingsurfaces arranged for impingementagainst the ratchet surface when the detente are actively presented thereto.

A still further Aobjeet of the invention is to provide a structure of, the class specified which will be simple, strong and durable and which will consist of parts capable of being readily separated from each other to permit of the substitution of new parts for worn ones or to otherwise enable access to Ibe properly gained to any of theparts ,for any purpose whatsoever.

In the drawings l Figure 1 is a longitudinal section through a portion of the structure showing parts in full-lines.

Fig. 2 is a section on line 2 2 of Fig. 1.

Fig. 3 is a section on line 3 3 of Fig. 1

with parts in elevation. Flg. 4 is a vertical .section through the the diaphragm displacing means can be obtained always at the l VSe5 , Fig. 6 is an enlarged side view of one of the detents.

Fi 7 is a section taken substantially on line -7 of Fig-3.

Fig. 8 is a perspective view of the spring. Fig.`9-' is a side view of a horn showing a known construction. Located within the casing 15 is a rotor 19 which is supported to revolve upon an axle 20 which is mounted in a support 21.

The rotor 19 consists preferably of a heavy wheel of case hardened steel-and it 1s provided withan external striking surface 22 and an internal ratchet surface 23, the teeth of said ratchet surface being of substantially V shaped formation and the same are separated from each other at relatively great intervals by intervening spaces 24 and disposed at a relatively remote distance from sald axle 20. The teeth are relatively broad as clearly shown in Fig. 4 and they lie parallel with the center or axis of the rotor. for a purpose to be hereinafter fully explained. The rotor isprovided with a central opening 25 which freely receives the central portion of the axle 20, saidI axle having reduced ends 27 and 28 which are respectively mounted in the side branches29 and 30 of the support 21. This support has its branches 29 and 30 provided with annular extensions`32-which are secured' by fastenings 33 to a plate 34. This plate is mounted upon screws 35 at the crown 36 of the casing 15 and as illustrated, these screws are adjustable inthe plate in order that the latter may .be slightly separated from the crown 36 to permit of movement of the support in the direction ofthe diaphragm so as to regulate the pressure of the striker surface 22 against its coacting anvil 18 of the diaphragm. In order to permit of a proper retention of the selected adjustment of the support, I provide a regulating screw 37 the same being adjustably mounted upon the crown 36 and arranged in free contact with the plate 34 so as to hold the latter in a re1- atively fixed position.

The axle 20 is provided with a small gear wheel 38 and adjacent to, said wheel andv Y xed to the axle is a relatively longer hanger 39 having one or any suitable number of pins 40` which project into the open side 4 1 of the rotor. These pins terminate approximately at the closed side 42of the ,rotor and.

as illustrated they are freely extended through apertures 43 in detents 44. These detents are .each provided with a relatively broad flat surface 45 which is adapted to come in at Contact with the next adjacent tooth of the described ratchet surface 23. By arranging the broad flat surfaces of the incense ratchet teeth parallelc with the axisof the rotor and providing the correspondingly formed' iiat surfaces 45 on the detents, a substantial mating contact will be established between` the arts when it is desired to cause the rotor to ecome temporarily fixed to the axle: As a result of this arrangement, lost motion Ibetween the parts will be avoided and a ositive action established at all times. he branches 29 and 30 of the support are relatively .separable as stated, in \order that the rotor and in fact all of the several working parts of the mechanism can be removed when desired andthe positions of the detents reversed upon their supporting pins 40 1n order to com ensate for posysible wear between the sur aces `45 and the b road flatfsurfaces of the teeth 23.

l The gear wheel 38 is in constant mesh with a power transmittingv gear 46 which is mounted upon an axle 47 vjournaled in the branches 29 and 30 as shown in Fig. 3. This axle is provided with a small gear wheel 48 which meshes with the teeth of an actuator 49. This actuator is in the form of sliding rod and it is provided with a ca 50 upon itsl exposed end' in Vorder that 1t may be conveniently manipulated by hand.

Said actuator is mounted to slide in a guide 51 secured to the branch 29 of the support 21 and as shown, the actuator isprovided' with an vopening 52 in which .the hooked end 53 of 4a springl 54 is removably engaged. ,This hooked end of the spring extends from a branch 55 of said spring and as`shown in Fig. 7 said branch is freely slidable in a slot 56 formed in the branch 29 .of the support 21.

sprn is angularly ofi' set at 57 and is remova ly engaged ma downwardl and inwardly extending opening 58 in sald branch 29 of the support. In this manner the spring is freely removable from the' operating parts of the mechanism to permlt-tli'e actuator 49 to be entirely withdrawn from the casing if desired. The oilice of this spring is to normally hold the actuator in an active extended position as shown in Figs. 1 and 2 of the drawings and it serves'to permit of an immediate return of the actuator to its normal'position when pressure of the hand is'removed'from the cap 50..v It further functions to cause the gear trains between the actuator and the axle 26 to reverse its operation when pressure of the hand' is released from. the actuator so that all of the several instrumentalities Vwill properly `as` sume their starting positions after motion in one direction has been set up in the rotor.

The rotor is provided rwith a central detent' support '59 which operates to limit the gravitationalmovements of the detente in the direction lof the axle 26. This is deemed properly essential injorder to permit the de- The Dopposite terminal of the tents to be positively moved centifugally when rotary motion in one direction is imparted to the hanger 39. In operation, [pressure in a downward d1- rection is applied to the actuator 49 which in turn, revolves the axle 26 in the direction of the arrow shown in Fig. l. In so doing, the detents 44 are moved lby centrifugal action into coacting contact with the teeth 23 of the rotor and the latter then becomes a fixed part temporarily of the axle and both are made to rotate together in the same direction. When the downward movement of the actuator is released the latter is elevated or returned to its normal position under the .action of the spring 54. The gear train between the actuator and the axle 26 is then affected so as to revolve the axle in an opposite direction and thereby render the de-l tents inactive. The rotor then continues to revolve by inertia in the presence of the anvil 18 ofthe diaphragm. The parts are combined with a regard to accomplishing a perf ect balance of the several instrumentalities so that a high measure of eiiciency is obtained and sounds of a high amplitude and of a long duration, set up.

In the form of the invention shown in Figs. 9 and 10, the actuator 49 is arranged in direct contact with, a small gear wheel 60 upon an axle 61. Aside from this specilic arrangement the essential parts of the mechanism are identical withA those in the previously described embodiment.

From the foregoing, it is thought that the construction, operatlon and many adv-antages of the herein described invention will be apparent to those skilled in the art without further description; and it will be understood that various changes in the size, shape, proportion, and minor details of construction may be resorted to without departing from the spirit or sacrificing any of the advantages of lthe invention. For instance, I would not desire to limit myself to the particular actuating mechanism herein shown for :transferring motion to the axle 27 as many ways might be substituted for the means suggested herein, althou h I find the present means practical and gully appropriate 1n every respect.

What is claimed as new is:-

.1. In a device of the class described, a vibratory member, a rotor coacting with said member to vibrate the same, an annular interior clutch surface on the rotor adjacent the periphery thereof', a movable hanger, clutch devices on the .hanger adapted on movement of the latter to engage with said annular clutch surface, and means for transmittmg motlon toA said hanger to advance the clutch devices thereof into driving engagement with said annular clutch surface.

2. 'In a signal adapted to be sounded by the rotation of a rotor, an interior ratchet surface on the rotor near the outer periphery thereof and concentric with the latter, a rotatable member mounted concentrically with the rotor and independently thereof, detents on the' said rotatable member adapted when the latter is rotated to move into engagement with said ratchet surface to lock the rotor and said member together, and means for rotating said rotatable member at high speed.

3. In a device of the class described, a vibratory member, a rotor engaged with said member and adapted to actuate the same 1 when rotating, an annular interior ratchet 'surface on sald rotor near .the outer periphery of the rotor and concentric with thel same, a hanger movable independently of the rotor and concentric therewith, the said' hanger comprising radial arms, detents carried by said arms and adapted to engage with the said ratchet surface, and means for rotating said hanger.

4. In a device of the class described, a vibratory member, a support, an axle upon said support, a rotor lrotatably supported upon said axle and operatively engaged with said vibratory member, an annular interior ratchet surface on said rotor near the outer periphery thereof, a hanger secured upon said axle and comprising radialy arms, detents near the outer ends of said arms adapted to engage with said ratchet surface and to lock the hanger and rotor together, a relatively small pinion aixed to said axle, a large gear in mesh with said pinion, a small gear -aiixed to the. said large gear, a rack plunger in mesh with said small gear, and means for holding the plunger at the limit of its movement in one direction.

5. In a device of the class described, a vibratory member, a support, an axle upon said support, a relatively large rotor loosely mounted upon said axle, and having its periphery operatively engaged with said member, one side of said rotor being cut away to provide inner Iand outer concentric surfaces, a hanger secured .to said axle and comprising radial arms, pivoted elements at4 the ends of said arms and disposed in the cut axwa portion of said rotor, the said elements imted inl their inward swinging movement by said inner surface and adapted to engage the said outer surface when swung cutwar 1y, .and means forrotating said axle.

In testimony whereof I alix my signature.

GERARD R. MARSICO.

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