US2320879A - Phonograph reproducing apparatus - Google Patents

Phonograph reproducing apparatus Download PDF

Info

Publication number
US2320879A
US2320879A US361319A US36131940A US2320879A US 2320879 A US2320879 A US 2320879A US 361319 A US361319 A US 361319A US 36131940 A US36131940 A US 36131940A US 2320879 A US2320879 A US 2320879A
Authority
US
United States
Prior art keywords
stylus
light
extended portion
lamp
needle
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
US361319A
Inventor
Oran T Mcilvaine
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to US361319A priority Critical patent/US2320879A/en
Application granted granted Critical
Publication of US2320879A publication Critical patent/US2320879A/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
    • G11B7/00Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor

Definitions

  • This invention relates to an improvement in phonograph reproducing apparatus.
  • apparatus used to reproduce vibrations that have been recorded on a tablet or other record surface have been usually either magnetic or crystal.
  • the crystal reproducers are materially better than the magnetic type, and are more frequently used.
  • such crystal reproducers have several objections, particularly a typical crystal whine on high notes, and are susceptible to needle scratch.
  • the object of this invention is to improve the reproducing qualities, obtaining much better fidelity, and substantially eliminating needle scratch without sacrificing any of the musical range.
  • the vibrating mechanism may be constructed very light in weight with greater high frequency response and less wear on the record, increasing the life of the latter very materially.
  • This object is accomplished by controlling the operation of the reproducing apparatus from a light sensitive cell, such as a photo-electric cell and controlling the light thereto directly by means of the needle operating from the record, moving laterally in response to the vibrations recorded thereon.
  • a light sensitive cell such as a photo-electric cell
  • Figs. 1 to 5 are diagrammatic views showing needle controlled light valves associated with lamps.
  • the invention is shown in difierent embodiments in Figs. 1 to 5, in which the sound record needle or stylusis adapted to engage a sound record groove in the usual way, and has an extended portion thereof projecting into a lamp.
  • the needle is mounted for freedom of movement relative to the lamp, thereby moving the extended portion and the light controlling means connected therewith.
  • the extended portion constitutes one of the leads of the filament thereof, in which event it may be constructed of suitable hard conducting metal, such as tungsten.
  • the lamp l5 has a filament l6 therein with one side thereof connected directly to an end of the needle ll, th latter extending movably through a side wall of the lamp. Vibration of the needle ll controls the path of light through a slot l8 to a photo-electric cell l9 since the filament will be vibrated by the needle and will thereby cause a variation of the light on the cell.
  • Fig. 2 is similar to Fig. 1, except that the filament is arranged to project a beam of light through the end of the lamp.
  • the needle 2! is connected with a slotted light shutter 22 which is movably mounted in the lamp 23, so that vibrations from the needle 2
  • the lamp 25 has a stationary filament 26 therein, while the needle 21 has a slot 28 formed directly therein to vary the position thereof in response to vibration of the needle.
  • Fig. 5 shows another form of lamp 39 having a filament 3! connected directly with the needle 32, while the latter extends through a metal diaphragm 38 of Kovar or other metal that will seal to the glass or other material and through the center of which the needle extends.
  • the reproduction from the phonograph record may be obtained with very improved results, greater fidelity, lightness in weight with much less wear on the record greatly lengthening its period of use and also eliminating needle scratch without sacrificing different frequencies or tones.
  • a stylus adapted to be actuated by a sound record and having an extended portion, an enclosed lamp receiving said extended portion of the stylus therein, said extended portion of the stylus having means connected therewith in the lamp for varying the light on the light responsive device.
  • a stylus adapted to be actuated by a sound record and having an extended portion, an enclosed lamp receiving said extended portion of the stylus therein, said extended portion of the stylus having a filament connected therewith and movable by the stylus for varying the light on the light responsive device.
  • a stylus adapted to be actuated by a sound record and having an extended portion, an enclosed lamp receiving said extended portion of the stylus therein, said extended portion of the stylus having a filament connected therewith and movable by the stylus for varying the light on the light responsive device, and a lead connected with said stylus for supplying current therethrough to said filament.
  • a stylus adapted to be actuated by a sound record and having an extended portion, an enclosed lamp including an envelope and a light source therein, said envelope receiving said extended portion oi the stylus therein, and means actuated by the extended portion of the stylus in the envelope for varying the light on the light responsive device.
  • a pick-up device adapted to be associated with a light responsive device, a stylus adapted to be actuated by a sound record and having an extended portion, an enclosed lamp receiving said extended portion of the stylus therein, means mounting said stylus and extended portion for movement relative to said lamp, said lamp including a filament therein having one end thereof connected directly with said extended portion of the stylus for varying the light on the light responsive device in response to movement 01' the stylus,
  • a stylus adapted to be actuated by a sound record and having an extended portion, an enclosed lamp receiving said extended portion of the stylus therein, means mounting said stylus and extended portion for movement relative to said lamp, said lamp including a filament mounted therein, and means connected with said extended portion of the stylus and having an opening therein for the passage of light from the filament to the light responsive device and for varying the light thereto in response to movement of the stylus.

Landscapes

  • Recording Measured Values (AREA)

Description

June 1, 1943.
o. T. MCILVAINE 2,320,879
PHONOGRAPH REPRODUC ING APPARATUS Filed Oct. 15, 1940 Patented June 1, 1943 UNITED STATES PATENT orri'c PHONOGBAPH REPRODUCING APPARATUS Oran T. Mcllvaine, St. Charles, Ill.
Application October 15, 1940, Serial No. 361,319
6 (Haims.
This invention'relates to an improvement in phonograph reproducing apparatus.
Heretofore, apparatus used to reproduce vibrations that have been recorded on a tablet or other record surface, have been usually either magnetic or crystal. The crystal reproducers are materially better than the magnetic type, and are more frequently used. However, such crystal reproducers have several objections, particularly a typical crystal whine on high notes, and are susceptible to needle scratch.
The object of this invention is to improve the reproducing qualities, obtaining much better fidelity, and substantially eliminating needle scratch without sacrificing any of the musical range. At the same time, the vibrating mechanism may be constructed very light in weight with greater high frequency response and less wear on the record, increasing the life of the latter very materially.
This object is accomplished by controlling the operation of the reproducing apparatus from a light sensitive cell, such as a photo-electric cell and controlling the light thereto directly by means of the needle operating from the record, moving laterally in response to the vibrations recorded thereon.
The accompanying drawing illustrates diiierent embodiments of the invention, in which:
Figs. 1 to 5 are diagrammatic views showing needle controlled light valves associated with lamps.
The invention is shown in difierent embodiments in Figs. 1 to 5, in which the sound record needle or stylusis adapted to engage a sound record groove in the usual way, and has an extended portion thereof projecting into a lamp. The needle is mounted for freedom of movement relative to the lamp, thereby moving the extended portion and the light controlling means connected therewith. In some forms, the extended portion constitutes one of the leads of the filament thereof, in which event it may be constructed of suitable hard conducting metal, such as tungsten.
In Fig. l, the lamp l5 has a filament l6 therein with one side thereof connected directly to an end of the needle ll, th latter extending movably through a side wall of the lamp. Vibration of the needle ll controls the path of light through a slot l8 to a photo-electric cell l9 since the filament will be vibrated by the needle and will thereby cause a variation of the light on the cell.
Fig. 2 is similar to Fig. 1, except that the filament is arranged to project a beam of light through the end of the lamp.
In Fig. 3, the needle 2! is connected with a slotted light shutter 22 which is movably mounted in the lamp 23, so that vibrations from the needle 2| will move the shutter sufliciently to vary the light on the cell, while the filament in the lamp 23 remains-stationary.
In Fig. 4, the lamp 25 has a stationary filament 26 therein, while the needle 21 has a slot 28 formed directly therein to vary the position thereof in response to vibration of the needle.
Fig. 5 shows another form of lamp 39 having a filament 3! connected directly with the needle 32, while the latter extends through a metal diaphragm 38 of Kovar or other metal that will seal to the glass or other material and through the center of which the needle extends.
By thus utilizing th reproducing needle that moves in response to the recorded vibrations, the reproduction from the phonograph record may be obtained with very improved results, greater fidelity, lightness in weight with much less wear on the record greatly lengthening its period of use and also eliminating needle scratch without sacrificing different frequencies or tones.
I claim:
1. In a pick-up device adapted to be associated with a light responsive device, a stylus adapted to be actuated by a sound record and having an extended portion, an enclosed lamp receiving said extended portion of the stylus therein, said extended portion of the stylus having means connected therewith in the lamp for varying the light on the light responsive device.
2. In a pick-up device adapted to be associated with a light responsive device, a stylus adapted to be actuated by a sound record and having an extended portion, an enclosed lamp receiving said extended portion of the stylus therein, said extended portion of the stylus having a filament connected therewith and movable by the stylus for varying the light on the light responsive device.
3. In a pick-up device adapted to be associated with a light responsive device, a stylus adapted to be actuated by a sound record and having an extended portion, an enclosed lamp receiving said extended portion of the stylus therein, said extended portion of the stylus having a filament connected therewith and movable by the stylus for varying the light on the light responsive device, and a lead connected with said stylus for supplying current therethrough to said filament.
4. In a pick-up device adapted to be associated with a light responsive device, a stylus adapted to be actuated by a sound record and having an extended portion, an enclosed lamp including an envelope and a light source therein, said envelope receiving said extended portion oi the stylus therein, and means actuated by the extended portion of the stylus in the envelope for varying the light on the light responsive device.
5. In a pick-up device adapted to be associated with a light responsive device, a stylus adapted to be actuated by a sound record and having an extended portion, an enclosed lamp receiving said extended portion of the stylus therein, means mounting said stylus and extended portion for movement relative to said lamp, said lamp including a filament therein having one end thereof connected directly with said extended portion of the stylus for varying the light on the light responsive device in response to movement 01' the stylus,
6. In a pick-up device adapted to be associated with a light responsive device, a stylus adapted to be actuated by a sound record and having an extended portion, an enclosed lamp receiving said extended portion of the stylus therein, means mounting said stylus and extended portion for movement relative to said lamp, said lamp including a filament mounted therein, and means connected with said extended portion of the stylus and having an opening therein for the passage of light from the filament to the light responsive device and for varying the light thereto in response to movement of the stylus.
ORAN T. MCILVAINE.
US361319A 1940-10-15 1940-10-15 Phonograph reproducing apparatus Expired - Lifetime US2320879A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US361319A US2320879A (en) 1940-10-15 1940-10-15 Phonograph reproducing apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US361319A US2320879A (en) 1940-10-15 1940-10-15 Phonograph reproducing apparatus

Publications (1)

Publication Number Publication Date
US2320879A true US2320879A (en) 1943-06-01

Family

ID=23421556

Family Applications (1)

Application Number Title Priority Date Filing Date
US361319A Expired - Lifetime US2320879A (en) 1940-10-15 1940-10-15 Phonograph reproducing apparatus

Country Status (1)

Country Link
US (1) US2320879A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2514081A (en) * 1946-08-08 1950-07-04 Oran T Mcilvaine Phonograph pickup device
US3261925A (en) * 1960-10-06 1966-07-19 Bernard Smith Lab Inc A Stereophonic photoelectric transducer

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2514081A (en) * 1946-08-08 1950-07-04 Oran T Mcilvaine Phonograph pickup device
US3261925A (en) * 1960-10-06 1966-07-19 Bernard Smith Lab Inc A Stereophonic photoelectric transducer

Similar Documents

Publication Publication Date Title
US2320879A (en) Phonograph reproducing apparatus
US1570297A (en) Art of recording and reproducing sounds
US2507188A (en) Electrostatic phonograph pickup
US2025300A (en) Phonograph
US2113907A (en) Electric pick-up
US2189311A (en) Electrical impulse responsive means
US2514081A (en) Phonograph pickup device
US3054862A (en) Pickup cartridge
US2303619A (en) Adjustable pickup head for sound reproducing apparatus
US2102316A (en) Phonograph recording control system
US3226124A (en) Dampened suspension systems for stereophonic phonograph pickups
US1330402A (en) Talking-machine
US2235257A (en) Dictating machine
US397280A (en) Phonograph recorder and reproducer
US891233A (en) Sound-recording apparatus.
US1441862A (en) Sound reproducer for talking machines
US2270367A (en) Electromechanical control system
US856553A (en) Means for recording sounds.
US1357037A (en) Means for controlling the operation of talking-machines
GB313904A (en) Improvements relating to the reproduction of sound from a gramophone record
US1383737A (en) Method of and apparatus for recording and reproducing sound
US1582285A (en) Acoustical apparatus
US2154067A (en) Sound recording system
US919293A (en) Apparatus for reproducing sound.
US2305875A (en) Recording of electrical impulses