US831779A - Magnetic sound-record. - Google Patents

Magnetic sound-record. Download PDF

Info

Publication number
US831779A
US831779A US30387604A US1904303876A US831779A US 831779 A US831779 A US 831779A US 30387604 A US30387604 A US 30387604A US 1904303876 A US1904303876 A US 1904303876A US 831779 A US831779 A US 831779A
Authority
US
United States
Prior art keywords
magnetic
record
sound
needle
magnetic sound
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
US30387604A
Inventor
Victor H Emerson
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
AMERICAN GRAPHOPHONE Co
Original Assignee
AMERICAN GRAPHOPHONE CO
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by AMERICAN GRAPHOPHONE CO filed Critical AMERICAN GRAPHOPHONE CO
Priority to US30387604A priority Critical patent/US831779A/en
Application granted granted Critical
Publication of US831779A publication Critical patent/US831779A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • GPHYSICS
    • G11INFORMATION STORAGE
    • G11BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B5/00Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • G11B5/012Recording on, or reproducing or erasing from, magnetic disks

Definitions

  • My invention consists of the production of a magnetic sound-record and in the several details hereinafter set forth.
  • Figure 1 represents a side view of a talking-machine, illustrating my invention.
  • Fig. 2 is a plan view of a soundrecord produced in accordance with my invention.
  • A represents any ordinary talking-machine motor
  • B is the turn-table carried thereby in operative relation to a recording device or sound-box.
  • the recording-tablets heretofore employed I make use of a disk or tablet of non-magnetic material Osuch as glass, brass, cop er, or preferably emery paper or cloth.
  • O non-magnetic material
  • the sound-box D arried' y the sound-box D in place of the recordingneedle now employed is a needle E, that presses upon the surface of the non-magnetic disk C and is vibrated by the dia hragm in the usual manner while the dis rotates.
  • This needle E is magnetic or magnetized and 3 5 is ofsuch consistency that it will act upon the surface of the disk C in a manner analogous to that of chalk, c'runiblin off in almost invisible particles and leaving behind on the disk C a thin line of its-own magnetic mateo rial.
  • This needle is preferably composed of fine-powdered steel ressed and held together to form a needle in t e same manner as in the case of carbon in the well-known carbon penoils of electric-arc lamps. The result of this operation is to obtain a sound-record consisting of a non-magnetic tablet having a sinuous spiral line imparted to it, which line is both magnetic and corresponds in its irregularities with the original sound waves.
  • this magnetic sound-record is placed upon a similar talking-machine, except that in lace of the recording-needle just employed l substitute a fine pointed needle of iron or steel, which is connected to the diaphragm, but does not actually touch the magnetic line on the record, but is in very close proximity.
  • the turntable revolves and the record is carried beneath the reproducing-needle the magnetism of the line F draws the needle to and fro, producing vibrations which are imparted to the diaphragm, which vibrations, among other merits, are free from the scratching scraping sounds heretofore apparently inseparable from disk records.
  • a sound-record consisting of a tablet of non magnetic material having deposited thereon an irregular magnetic line corresponding to sound-waves.

Landscapes

  • Paints Or Removers (AREA)

Description

No. 831,779. PATENTEvbhSEPT.v2'5,1-9'O6.'
- V.H.IEMERSON.
MAGNETIC SOUND RECORD. AIPLIOATION FILED JAN.14.1904. RENEWED H AR, 2, 1906.
earns a'rnn 'r rroo VICTOR H. EMERSON, OF NEWARK, NEW JERSEY, ASSIGNOR TO AMERICAN GRAPHOPHONE COMPANY, OF WASHINGTON, DISTRICT OF COLUMBIA, A CORPORATION OF WEST VIRGINIA.
MAGNETIC SOUND-RECORD- Specification of Letters Patent.
' Patentedsep't. 25, 1906.
[ all whom, it may concern.-
Be it known that I, Vrcron H. EMERSON, of Newark, county of Essex, State of New Jersey, have invented a new and useful Improvement in Magnetic Sound-Records,
which is fully set forth in the following specification.
My invention consists of the production of a magnetic sound-record and in the several details hereinafter set forth.
It will best be understood by reference to the accompanying drawings forming part of this specification and in which for convenience I illustrate the invention as applied to IS a disk form of machine and tablet.
In the drawings, Figure 1 represents a side view of a talking-machine, illustrating my invention. Fig. 2 is a plan view of a soundrecord produced in accordance with my invention. g
A represents any ordinary talking-machine motor, and B is the turn-table carried thereby in operative relation to a recording device or sound-box. Upon this table 3 instead of v the recording-tablets heretofore employed I make use of a disk or tablet of non-magnetic material Osuch as glass, brass, cop er, or preferably emery paper or cloth. arried' y the sound-box D in place of the recordingneedle now employed is a needle E, that presses upon the surface of the non-magnetic disk C and is vibrated by the dia hragm in the usual manner while the dis rotates. This needle E is magnetic or magnetized and 3 5 is ofsuch consistency that it will act upon the surface of the disk C in a manner analogous to that of chalk, c'runiblin off in almost invisible particles and leaving behind on the disk C a thin line of its-own magnetic mateo rial. This needle is preferably composed of fine-powdered steel ressed and held together to form a needle in t e same manner as in the case of carbon in the well-known carbon penoils of electric-arc lamps. The result of this operation is to obtain a sound-record consisting of a non-magnetic tablet having a sinuous spiral line imparted to it, which line is both magnetic and corresponds in its irregularities with the original sound waves. For the purpose of reproduction, this magnetic sound-record is placed upon a similar talking-machine, except that in lace of the recording-needle just employed l substitute a fine pointed needle of iron or steel, which is connected to the diaphragm, but does not actually touch the magnetic line on the record, but is in very close proximity. Asthe turntable revolves and the record is carried beneath the reproducing-needle the magnetism of the line F draws the needle to and fro, producing vibrations which are imparted to the diaphragm, which vibrations, among other merits, are free from the scratching scraping sounds heretofore apparently inseparable from disk records.
I have thus described one particular embodiment of my invention, but subject to.
modifications to be made in the same without departing from the spirit of my invention. claim 1. A sound-record consisting of a tablet of non magnetic material having deposited thereon an irregular magnetic line corresponding to sound-waves.
2. The art of producin magnetic soundrecords which consists in e ositin upon the surface of a non-magnetic ta let a t 'n line or tracing produced thereon by the crumbling action 0 a ma etic needle while'the latter is being actuate waves.
In testimony whereof I have signed this specification in the presence of-two subscrib mg witnesses. I
VICTOR H. EMERSON. Witnesses? O. A. L. Maseru, Rnprn LANE Soon.-
in accordance with sound-
US30387604A 1904-01-14 1904-01-14 Magnetic sound-record. Expired - Lifetime US831779A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US30387604A US831779A (en) 1904-01-14 1904-01-14 Magnetic sound-record.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US30387604A US831779A (en) 1904-01-14 1904-01-14 Magnetic sound-record.

Publications (1)

Publication Number Publication Date
US831779A true US831779A (en) 1906-09-25

Family

ID=2900254

Family Applications (1)

Application Number Title Priority Date Filing Date
US30387604A Expired - Lifetime US831779A (en) 1904-01-14 1904-01-14 Magnetic sound-record.

Country Status (1)

Country Link
US (1) US831779A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2517440A (en) * 1947-04-02 1950-08-01 Jaekson O Kleber Double-track recording system
US2574708A (en) * 1948-12-22 1951-11-13 Rca Corp Vibratile pickup for magnetic recorders
US2632061A (en) * 1947-06-07 1953-03-17 Brush Dev Co Apparatus for producing variable width magnetic recordings
US2917588A (en) * 1953-08-31 1959-12-15 Texas Instruments Inc Apparatus for recording and playback

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2517440A (en) * 1947-04-02 1950-08-01 Jaekson O Kleber Double-track recording system
US2632061A (en) * 1947-06-07 1953-03-17 Brush Dev Co Apparatus for producing variable width magnetic recordings
US2574708A (en) * 1948-12-22 1951-11-13 Rca Corp Vibratile pickup for magnetic recorders
US2917588A (en) * 1953-08-31 1959-12-15 Texas Instruments Inc Apparatus for recording and playback

Similar Documents

Publication Publication Date Title
US2567092A (en) Magnetic recorder-reproducer device of the disk type
US831779A (en) Magnetic sound-record.
US2517440A (en) Double-track recording system
US908778A (en) Sound-reproducing machine.
US2040693A (en) Sound record
US1011322A (en) Method of recording and reproducing sounds or signals.
US341287A (en) taintee
US964221A (en) Sound-record.
US2440420A (en) Control mechanism for sound reproducing
US1246651A (en) Record for talking-machines.
US500282A (en) Phonograph
US2658956A (en) Magnetic recording and reproducing
US676106A (en) Sound-recording apparatus.
US1084573A (en) Talking-machine.
US1026084A (en) Reproducer for graphophones.
US800800A (en) Phonograph-record and method of making the same.
US777615A (en) Convertible sound-box.
US1058754A (en) Talking-machine needle.
US630869A (en) Talking-machine.
US1259242A (en) Attachment for talking-machines.
US790351A (en) Process of duplicating phonographic records.
US652457A (en) Phonograph.
US3042757A (en) Stylus recording with superimposed high frequency excitation
US1249409A (en) Sound-transmitting apparatus.
US788927A (en) Method of tuning phonograph-cylinders.