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Publication numberUS973960 A
Publication typeGrant
Publication dateOct 25, 1910
Filing dateJun 5, 1908
Priority dateJun 5, 1908
Publication numberUS 973960 A, US 973960A, US-A-973960, US973960 A, US973960A
InventorsJohn Pell Northey
Original AssigneeJohn Pell Northey
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Sound-producing device.
US 973960 A
Abstract  available in
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Claims  available in
Description  (OCR text may contain errors)

J. P. NORTHEY. scum) Pnovucme DEVICE.


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' Specification 0! Letters retest.

Patented Oct. 25, 1910.

Application filed June 5, 1908. Serial; No. 438,898.

lowing the fluid to pass through annular To all whom it may concern:

Be it known that I, Join: Pam, NOR'IHEY,

a subject of His Majesty the King of Great Britain, residing at the city of Toronto, Province of Ontario, Canada, but. at resent of the Savoy Hotel, London, Englnnr have ipvented a new and useful Improved Sound- 1 roducin a; is a s ec'i cation. i0 Th s invention relates to sound producing.

devices suitable for fog signaling, position locating, or the like, of the character in which a fixed part' aving-note determining orifices'is employed in conjunction with a moving part he'jvifigsimilar orifices, and

driven from aseparate fluid supply.

According toe-the present invention I utilize the driving air or steam after it has done its work by passing ita'ga'in into the note air in such a manner that t mixes with it in vibrations synchronous with the lar er volume of note vibrations and thus increu es the volume of the latter'wit-hout destroying its purity.

In the accompanying drawing is shown one form of ap eratus adapted to my present invention, igure 1 being a sectional. elevation of suflicicnt of a diaphone or sound roducing apparatus for the purposeof un crstandingsame;

mentary sectional detail view showing on an 'enlar ed scale'the various ports and pas. sages a 'acent thepiston head for the incoming and eighausting' auxiliary fluid un-- der pressurea f Y -Inthe form. shown it will be seen that the sound producing air or steam after its entrance at'a passes through a slotged cylinder b, and through a slotted mova le part terminating in the resonator e, the movable art being-opfn'ended for the purpose of (ischarging t e air vibrations. The movable art may bereciprocated in any of the usun ways with a separate steamor .air 'suppl or-the particular arrangement 1llustra may be employed. In this case the separate steam or air entrance 9 passesthe fluid to a'passa around as an nnlet passage, and the-other half way around as an exhaust pawn e h, a partition h separating thetwo. rom the supply passage h the fluid passes throu h an annular port'l in an enlarged head 1 of the cylinder 6 and between it and a piston i of the movable part c, which-- it forces away trom the cylinder head 81-:

Device, of which thc'following Fig. 2 is a frag-.

h which extends half way a fixed ports 2 and? in the piston and cylinder heads respectively to holes 4 and thence by an annular port 5. in the c linder head to the other side of the piston read so that the latter is-driven in the opposite direction, the inlet port 1 being thus'closed. As the orts 5 and 'l are a short distance away rom the cylinder cover m and the part of the cylinder head '0 used to the piston head res ectively, spaces ibr'the fluid are left on use side of the piston head which act to. cushion it in either direction. The fluid passes back from the cover sideof the pis- I ton head by way of the ort 5, holes 4, port 3 into an annular space in the piston head then by way ofan annular port 8 in cylinder head to holes 9 which in turn, through ,the port-95, communicate with the exhaust passage h from which the exhaust air or steam passes, through a port 10, to a-eham ber 10, from thence, through the port-11', to 'a chamber 11 and from thence throu h slots n in an extension n. of the cylinder and through corresponding slots 0 -1n the mov- ,oble part thus producing vibrations similar to those, of the sound producin air with the result in this case, that the rivin air 'or steam which previously was waste or if discharged into the resonator was so done that it disturbed the note, is utilized to increase the volume of the latter.

In the embodiment of the invention shown it will be seen that chamber 11 is open to a portion of one side of the piston head. The remaining portion of this side of the piston head isalways under pressure but its area-- is less as will be seen than'the side from which the exhaust takes place.

It will he understood that the particular construction is only shown as an example of a moving part driven by a separate supply for the purpose of illustrating the

zation of the exhaust of .the latter, and that the invention can be adapted to other con "structi ons in which the same conditions exist.

What I y} I 1., A'sonnd producing device comprising" part having note determining orifices, a'ni'ova le part having similar coacting orifices, one of said parts comprising a note vibration chamber, means conducting. main fluid under pressure to same,'-'a pis head carried by said movable part, means" n for conducting an auxiliary fluid under pressure to said piston head, and means canducting the exhaust auxiliary pressure tluid 'fl'oln said piston head and int'rcalucing same into said chamber synchronously with the introduction of said main fluid.

2. A sound producing device comprising a flgted part having note determining orilines, a movable part having similar co-acting orifices, means conducting. fluid under pressure to said orifices, a piston head car- -10 ried by said movable part, means conducting fluid under pressure to said piston head, an exhaust chamber for the exhaust pressure "fluid from said piston head, said exhaust chamber containing portions corresponding 15 to said fixed and movable part and having co-acting orifices therein to receive the exhaust from said exhaust chamber.

3. A sound producing device comprising a fixed part having two sets'of not-c deter- 20 mining orifices, a ,movable part having two similar co-actiug sets of orifices, means for conducting pressure fluid to one ("O-{Kiting set, a piston bead carried by such movable part, separate fluid conducting means lead- '25 mg to said piston head, and an exhaust chamber for said separate fluid in communication with the other (co-acting set.

4. A sound producing device comprising a fixed part having, note determining orifices, a movable part having similar co-actilig, orifices, one of said parts comprising a note vibration chamber, and said movable part being provided with a piston head, means for conducting fluid under pressure through said orifices into said vibration chamber, means for conducting an auxiliary fluid under pressure to said piston head, and means for conducting the exhaust from said auxiliary fluid under pressure to said vibration chamber at the same time that said main fluid is introduced therein, and through orifices of the same size as said previously mentioned orifices. I i

In testimony whereof I have hereunto set my hand in the presence of the two subscribing witnesses.


\Vitnesses ALLEN PARRY J onus,

lowauo '1. Fos'rr-zu.

Cooperative ClassificationG10K7/04