US220169A - Improvement in sound-collectors - Google Patents

Improvement in sound-collectors Download PDF

Info

Publication number
US220169A
US220169A US220169DA US220169A US 220169 A US220169 A US 220169A US 220169D A US220169D A US 220169DA US 220169 A US220169 A US 220169A
Authority
US
United States
Prior art keywords
sound
cylinder
concave
collectors
improvement
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
Publication date
Application granted granted Critical
Publication of US220169A publication Critical patent/US220169A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/02—Casings; Cabinets ; Supports therefor; Mountings therein
    • H04R1/023—Screens for loudspeakers

Definitions

  • the object of my invention is to furnish a device for collecting and concentrating sound, for use as an ear-trumpet and in connection with telephones and phonographs; and the invention consists in a cylinder fitted with a concave base and a small concave reflector at the focus of the base, and facing the same, whereby the sounds collected by the concave from a large area are focused upon the reflector and concentrated at the desired point.
  • Figure 1 is a longitudinal section of'the sound-collector.
  • Fig. 2 is an end View of the same.
  • A is a cylinder, preferably made of sheet metal and of convenient size for handling, and having one of its ends closed by a cap, a, which is concave on the inner side and has a small aperture in the center, which is fitted with a tube, 1), that projects outward.
  • This reflector d faces the concave cap a, and is situated at the focus of the same, and its center is consequently in line with the center of tube 1).
  • the cylinder A acts as a collector and receiver of sounds, which enter by its open end, and by the concave reflecting-surface a the sounds are collected from the entire area of the cylinder and thrown upon the reflector d.
  • the reflectord will act to still further concentrate the sound and project it in a straight line through the tube 1), the dotted lines showing the manner of operation.
  • This device may be used as an ear-trumpet by placing the end of tube 1) to the ear; or it may be applied in the same manner to a tele phone or a iihonograph. The operatorin that case will speak into the open end of the cylinder, and the vibrations will be projected through the tube 1) upon the vibrating diaphragm of the instrument.

Description

W. H. OAKLEY. Sound-Collector.
No. 220,169. Patented Sept. 30, I879.
, INVENTOR WITNESSES TTORNEYS.
UNITED STATES PATENT OFFICE.
VILLIAM H. OAKLEY, OF MANISTEE, MICHIGAN.
iMPROVEMENT IN SOUND-COLLECTORS.
Specification forming part of Letters Patent No. 220,169, dated September 30, 1879; application filed July 1, 1879.
To all whom it may concern:
Be it known that I, WILLIAM H. OAKLEY, of Manistee, in the county of Manistee and State of Michigan, have invented a new and Improved Sound-Collector, of which the following is a specification.
The object of my invention is to furnish a device for collecting and concentrating sound, for use as an ear-trumpet and in connection with telephones and phonographs; and the invention consists in a cylinder fitted with a concave base and a small concave reflector at the focus of the base, and facing the same, whereby the sounds collected by the concave from a large area are focused upon the reflector and concentrated at the desired point.
The apparatus is shown in the accom pan ying drawings, wherein Figure 1 is a longitudinal section of'the sound-collector. Fig. 2 is an end View of the same.
Similar letters of reference indicate corresponding parts.
A is a cylinder, preferably made of sheet metal and of convenient size for handling, and having one of its ends closed by a cap, a, which is concave on the inner side and has a small aperture in the center, which is fitted with a tube, 1), that projects outward.
Within the cylinder A, upon a rigid arm, 0, that is attached to the side of the cylinder, is a small concave reflector, (I. This reflector d faces the concave cap a, and is situated at the focus of the same, and its center is consequently in line with the center of tube 1).
The cylinder A acts as a collector and receiver of sounds, which enter by its open end, and by the concave reflecting-surface a the sounds are collected from the entire area of the cylinder and thrown upon the reflector d. The reflectord will act to still further concentrate the sound and project it in a straight line through the tube 1), the dotted lines showing the manner of operation.
This device may be used as an ear-trumpet by placing the end of tube 1) to the ear; or it may be applied in the same manner to a tele phone or a iihonograph. The operatorin that case will speak into the open end of the cylinder, and the vibrations will be projected through the tube 1) upon the vibrating diaphragm of the instrument.
Having thus described my invention, I claim as new and desire to secure by Letters Patent- The improved sound-collector consisting of the cylinder A, titted at one end with the apertured concave cap a, and having the concave reflector dcombincd with it, substantially as and for the purposes set forth.
\VILLIAM H. OAKLE Y.
Witnesses:
N. W. NELsoN, WM. ll/IARSHALL.
US220169D Improvement in sound-collectors Expired - Lifetime US220169A (en)

Publications (1)

Publication Number Publication Date
US220169A true US220169A (en) 1879-09-30

Family

ID=2289570

Family Applications (1)

Application Number Title Priority Date Filing Date
US220169D Expired - Lifetime US220169A (en) Improvement in sound-collectors

Country Status (1)

Country Link
US (1) US220169A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3305043A (en) * 1965-03-08 1967-02-21 Charles E Pfund Acoustic communication device and toy

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3305043A (en) * 1965-03-08 1967-02-21 Charles E Pfund Acoustic communication device and toy

Similar Documents

Publication Publication Date Title
US4142603A (en) Adjustable speaker cabinet
US726277A (en) Goose-call.
US3760679A (en) Non-transposing mute
NL7908896A (en) A MECHANICAL FILTER FOR AN ELECTRODYNAMIC CONVERTER.
US220169A (en) Improvement in sound-collectors
US4231445A (en) Acoustic lens speaker cabinet
US1878088A (en) Acoustic apparatus
US864858A (en) Automatic circuit-closer.
US675700A (en) Device attached to hats to aid in hearing.
US374439A (en) Transmitter
US370230A (en) Auditory transmitter for telephones
US286680A (en) Acoustic telephone
US875795A (en) Stethoscope.
US362115A (en) Samuel rosenblatt
US779033A (en) Amplifying-horn.
US481133A (en) Mechanical telephone
US450358A (en) Auxiliary mouth-piece for telephones
US497759A (en) Mouth-whistle
US144026A (en) Improvement in toy horns
US793436A (en) Earpiece or acoustic device.
US421800A (en) Mouth-piece for telephones
US318057A (en) tyler
US304242A (en) Mechanical telephone
US1031297A (en) Transmitter-mouthpiece.
US829849A (en) Telephone or like transmitter.