US953044A

US953044A - Sound-producing device.

Info

Publication number: US953044A
Application number: US44529208A
Authority: US
Inventors: George Macloskie
Original assignee: General Electric Co
Current assignee: General Electric Co
Priority date: 1908-07-25
Filing date: 1908-07-25
Publication date: 1910-03-29
Anticipated expiration: 1927-03-29

Description

G. MAGLOSKIE.

SOUND PRODUCING DEVICE.

APPLICATION FILED JULY 25, 190B.

. Patentd Mar.29, 1910.

Inventor: Geor' em closkie, by

. UNITED STATES PATENT orn on.

GEORGE MACLOSRIE, OF'SCHENECTA'DY, NEW YORK, ASSIGNOR T0 GENERAL ELECTRIC COMPANY, A CORPORATION OI NEW YORK.

SOUND-PRODUCING DEVICE.

Specification of Letters Patent.

Patented Mar. 29, 1910.

Application filed July 25, 1908. Serial No. 445,292.

To all whom it may concern:

Be it known that I, Gnonon MACLOSKIE, a citizen of the United States, residing at Schenectady, in the county of Schenectady, State of New York, have invented certain new and useful Improvements in Sound- Producing Devices, of which the following is a specification.

My invention relates to a sound producing device and has for its object such a device which is of simple construction and which produces a loud sound with the use of a small amount of fluid under ipressure as compared with the amount of lid used to operate the well-known organ pipe whistle.

. My invention consists in a sound producing device comprising a member, a diaphragm fastened in said member, said member having a passage communicating with both sides of said diaphragm and other passages alternately opened and closed by the vibration of said diaphragm.

In another aspect, my invention consists in a sound producing device comprising two resonators, a member, a diaphragm fastened in said member and arranged to vibrate be tween said resonators, said member having passages for admitting fluid alternately into said resonators.

Other features of my invention are pointed out with particularity in the claims annexed to and forming a part of this specification. For a better understanding of my invention, however, reference may be had to the following description taken in connection with the "accompanying drawing, in which Figure 1 is a sectional view of a sound producing device embodying my invention, and Fig. 2 is an end view of the same with .parts broken away to show the interior construction.

Referring to the drawing, the diaphragm 1 is fastened in the member 2, between the bells or

resonators

3 and 3. The passages 4 and 4 connect the resonators to the chambers 5 and 5, situated on either side of the diaphragm. The pipe 6 is connected to one side of the valve 7, while the ipe 6, is con- 1 nected to theother side. ommunication from the pipe 6 to the chambers 5 and 5 is had by means of the passage 8 and the passages 9 and 9'.

The member 2 is made up of two parts the diaphragm, which 1s pre erably circular in shape, against the part 10 and holds its outer edge firmly in place against vibration. The

parts

10 and 10 with the diaphragm in place may be clamped together by any suitable means, such as the bolts 12. The middle portion of the diaphragm is unsupported, and as the diaphragm is made of flexible material, such as leather, it may vibrate back and forth between the resonators 3 and 3.- The chambers 5 and 5 are preferably annular in shape and concentric with the diaphragm.

In the operation of my sound producing device, fluid under pressure, such as steam or compressed air, is admitted to the ipe 6 from a suitable source, such as a boi or or a motor-driven air compressor. By pulling on the lever 13 the valve 7 is opened, the fluid is admitted into the pipe 6', passes through the passages 8 and 9 into the chamber 5, causing a pressure upon the diaphragm and the closing of the passage 4, the fluid in the chamber 5 escaping through the passage 4 into the resonator 3. The closing of the passage 4 causes the pressure of the fluid in chamber 5 to exceed that in chamber 5. This excess of pressure will be sufficient to move the diaphragm in the opposite direction and close the passage 4, the

uid meanwhile escaping from the chamber 5 into the resonator 3 In this way the diaphragm will move back and forth alternately closin and opening the passages 4 and 4, and s ort pufi's of steam or air are sent out of the resonators, the column of air in the resonators being thrown into rapid vibration. This vibration produces a musical note, the pitch of which de ends upon the length of the resonators, an its loudness a great deal upon the megaphone arrangement of the resonators, that is, upon the divergence of their sides.

I desire it to be understood that my invention is not limited to the particular construction shown and described, and I aim in the ap ended claims to cover all modifioa tions whlch do not depart from the spirit and scope of my invention.

having passages for admitting fluid alter- What I claim as new and desire to secure by Letters Patent of the United States, is:

1. A sound producin device comprising a member, a diaphragm astened in said member, said member having a passage communicating with both sides of said diaphragm and other passages alternately opened and closed by the vibration of said diaphragm.

2. A sound producing device'comprismg a member, a diaphragm fastened in said member, said member having chambers on both sides of said diaphragm, a passage communicating withsaid chambers and other passages on both sides of said diaphragm alternately opened and closed by the vibration of said diaphragm.

3. A sound producing device comprising two resonators, a member, a diaphragm fastened in said member and arranged to vibrate between saidresonators, said member nately into said resonators.

4. A sound producing device comprising two resonators, a member, a diaphragm fastened in said member and arranged to vibrate between said resonators, said member having chambers on both sides of said diaphragm, a passage communicating with said chambers and other passages for admitting fluid alternately into-said resonators.

5. A sound producing device comprising two resonators, a diaphragm arranged tovibrate between said resonators, and a member having passages for admitting fluid to both sides of said diaphragm, and other passages communicating with saidresonators.

6. A sound producing device comprising two resonators, a-member, a diaphragm fastened in said member, said member having chambers on both sides of said diaphragm, a passage communicating with said chambers and other passages on both sides of said diaphragm alternately opened and'closed by the vibration of said diaphragm and communicating with .said resonators.

7. A sound producing device comprising tworesonators, a member, a diaphragm fastened in said member and arrangedto vibrate between said resonators, said member having annular chambers on both sides of said diaphragm, a passage communicating with said chambers and other passages on both sides of said diaphragm alternately opened and closed by'the vibration of said diaphragm and communicating with said resonators.

In witness whereof, I have hereunto set my hand this 23rd da of. July, 1908.

GEORCgE MAOLOSKIE. Witnesses:

BENJAMIN B. HULL,

HELEN ORFORD.