US1780194A - Sound-reproducing machine - Google Patents

Sound-reproducing machine Download PDF

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Publication number
US1780194A
US1780194A US360126A US36012629A US1780194A US 1780194 A US1780194 A US 1780194A US 360126 A US360126 A US 360126A US 36012629 A US36012629 A US 36012629A US 1780194 A US1780194 A US 1780194A
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US
United States
Prior art keywords
sound
turntable
reproducing machine
braking
pin
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
US360126A
Inventor
Kende George
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.)
PHONODISC Corp
Original Assignee
PHONODISC CORP
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 PHONODISC CORP filed Critical PHONODISC CORP
Priority to US360126A priority Critical patent/US1780194A/en
Application granted granted Critical
Publication of US1780194A publication Critical patent/US1780194A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B19/00—Driving, starting, stopping record carriers not specifically of filamentary or web form, or of supports therefor; Control thereof; Control of operating function ; Driving both disc and head
    • G11B19/20—Driving; Starting; Stopping; Control thereof
    • G11B19/2009—Turntables, hubs and motors for disk drives; Mounting of motors in the drive

Definitions

  • Figure 2 is a section on line 2-2 of Figure 1.
  • Figure 3 is a'section on line 3-3 of Figure 1.
  • the 4 designates the turntable which is mounted and driven as is customary, but is provided with the annular brake surface 5 underneath and near the periphery thereof.
  • a fixed support 6 is mounted to carry the two fixed diametrically disposed arms 7, each of which is provided with a bore 8 adjacent the free end thereof and directly below the surface 5.
  • a pin 9 is slidably mounted and guided in this bore, and carries a casing 10, for the brake disk or pad 11, which may be of any desired material, as leather, brake material, or felt
  • a spring 12 resiliently holds the pad frictionally against the surface 5, and as two are employed the braking efiect is applied at two diametrically opposite points.
  • each brake member consists of a pin, a cap carried by the pin, a bra ing pad carried by the cap, and a spring mounted upon the pin and resiliently holding the cap and pad toward the turntable.

Landscapes

  • Braking Arrangements (AREA)
  • Holding Or Fastening Of Disk On Rotational Shaft (AREA)

Description

Nov. 4, 1930. NI JE 1,780,194
SOUND REPRODUCING MACHINE Filed May 3. 1929 Gzaea: A ENDE I N V EN TOR.
A TTORNEY.
Patented Nov. 4, 1930 UNITED STATES PATENT OFFICE GEORGE KENDE, OF EAST ORANGE, NEWJERSEY ASSIGNOR TO PHONODISC CORPORA- 'I'ION, OF NEW YORK, N. Y.
SOUND-REPRODUGING MACHINE Application filed May 3, 1929.
In the operation of sound reproducing machines in conjunction with motion picture projectors in the production of synchronized motion pictures the sound record turntables are usually rather heavy; and after they have been started considerable momentum results, and as the force is applied the speed of the mass of the rotating turntable tends to accelerate. t is therefore the object of the present invention to prevent or retard this acceleration so that the turntable will be maintained in step and will be quickly halted when the rotating power has been cut off.
In order to do this, several constructions may be resorted to, but in order that the idea may be readily understood and its advantages fully appreciated, attention is invited to the accompanying drawings, in which Figure 1 is a section through a turntable of a sound reproducing machine with the invention applied.
Figure 2 is a section on line 2-2 of Figure 1.
Figure 3 is a'section on line 3-3 of Figure 1.
Referring to the drawings, the 4 designates the turntable which is mounted and driven as is customary, but is provided with the annular brake surface 5 underneath and near the periphery thereof.
A fixed support 6 is mounted to carry the two fixed diametrically disposed arms 7, each of which is provided with a bore 8 adjacent the free end thereof and directly below the surface 5. A pin 9 is slidably mounted and guided in this bore, and carries a casing 10, for the brake disk or pad 11, which may be of any desired material, as leather, brake material, or felt A spring 12 resiliently holds the pad frictionally against the surface 5, and as two are employed the braking efiect is applied at two diametrically opposite points.
It will thus be seen that inasmuch as the braking effect is applied at all times by the weak spring 12, any tendency to accelerate or move the turntable will be retarded and that When the turntable is halted the braking pads will bring it to a quick stop.
What I claim, is
Serial No. 360,126.
1. The combination with a sound record turntable having an annular braking surface, of a plurality of fixed arms disposed below and adjacent to the turntable, and a resiliently pressed brake member carried by each arm and in contact with the braking surface.
2. The combination as claimed in claim 1, in which each brake member consists of a pin, a cap carried by the pin, a bra ing pad carried by the cap, and a spring mounted upon the pin and resiliently holding the cap and pad toward the turntable.
In testimony whereof I affix my signature.
GEORGE KENDE.
US360126A 1929-05-03 1929-05-03 Sound-reproducing machine Expired - Lifetime US1780194A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US360126A US1780194A (en) 1929-05-03 1929-05-03 Sound-reproducing machine

Applications Claiming Priority (1)

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US360126A US1780194A (en) 1929-05-03 1929-05-03 Sound-reproducing machine

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Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2549486A (en) * 1950-05-13 1951-04-17 Elmer C Kiekhaefer Steering mounting for outboard motors
US2628722A (en) * 1949-05-24 1953-02-17 Vern G Walsh Display device
US2761692A (en) * 1952-06-02 1956-09-04 Int Harvester Co Caster wheel assembly for implement carriers
US2764265A (en) * 1953-12-22 1956-09-25 Goodyear Tire & Rubber Apparatus for extracting heat from brakes and improving the operation thereof
US2772878A (en) * 1951-10-29 1956-12-04 Siemens Ag Device for advancing tape records in telegraph apparatus
US2829740A (en) * 1955-09-08 1958-04-08 Hanes Hosiery Mills Company Brake means
US2977751A (en) * 1956-08-21 1961-04-04 Jr Ralph H Thrasher Balance-wheel lock
US3057147A (en) * 1956-07-30 1962-10-09 Bulova Watch Co Inc Motion converter
FR2482350A1 (en) * 1980-05-09 1981-11-13 Rca Corp PLATINUM ASSIST DEVICE IN A VIDEO DRIVE TOWER
US4494710A (en) * 1983-11-02 1985-01-22 Harris Michael J Reel brake apparatus
US4544048A (en) * 1981-05-14 1985-10-01 General Electric Company Magnetic friction device
US4660428A (en) * 1986-05-13 1987-04-28 Honeywell Inc. Drive train system
US6408757B2 (en) * 1999-12-22 2002-06-25 Tokyo Kikai Seisakusho, Ltd. Paper roll braking device

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2628722A (en) * 1949-05-24 1953-02-17 Vern G Walsh Display device
US2549486A (en) * 1950-05-13 1951-04-17 Elmer C Kiekhaefer Steering mounting for outboard motors
US2772878A (en) * 1951-10-29 1956-12-04 Siemens Ag Device for advancing tape records in telegraph apparatus
US2761692A (en) * 1952-06-02 1956-09-04 Int Harvester Co Caster wheel assembly for implement carriers
US2764265A (en) * 1953-12-22 1956-09-25 Goodyear Tire & Rubber Apparatus for extracting heat from brakes and improving the operation thereof
US2829740A (en) * 1955-09-08 1958-04-08 Hanes Hosiery Mills Company Brake means
US3057147A (en) * 1956-07-30 1962-10-09 Bulova Watch Co Inc Motion converter
US2977751A (en) * 1956-08-21 1961-04-04 Jr Ralph H Thrasher Balance-wheel lock
FR2482350A1 (en) * 1980-05-09 1981-11-13 Rca Corp PLATINUM ASSIST DEVICE IN A VIDEO DRIVE TOWER
US4544048A (en) * 1981-05-14 1985-10-01 General Electric Company Magnetic friction device
US4494710A (en) * 1983-11-02 1985-01-22 Harris Michael J Reel brake apparatus
US4660428A (en) * 1986-05-13 1987-04-28 Honeywell Inc. Drive train system
US6408757B2 (en) * 1999-12-22 2002-06-25 Tokyo Kikai Seisakusho, Ltd. Paper roll braking device

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