US778492A - Turn-table for talking-machines. - Google Patents

Turn-table for talking-machines. Download PDF

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Publication number
US778492A
US778492A US9815702A US1902098157A US778492A US 778492 A US778492 A US 778492A US 9815702 A US9815702 A US 9815702A US 1902098157 A US1902098157 A US 1902098157A US 778492 A US778492 A US 778492A
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United States
Prior art keywords
turn
talking
machines
recesses
record
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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
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US9815702A
Inventor
Eldridge R Johnson
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.)
Victor Talking Machine Co
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Victor Talking Machine Co
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Publication date
Application filed by Victor Talking Machine Co filed Critical Victor Talking Machine Co
Priority to US9815702A priority Critical patent/US778492A/en
Application granted granted Critical
Publication of US778492A publication Critical patent/US778492A/en
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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

  • my invention consists in providing a turn-table which will have the record carried thereby held without the aid of screws, clamps, or other fastening meansrand it also consists in providing a table of such a construction that its eificiency is increased, with its weight and cost of manufacture decreased.
  • Figure 1 is a plan view of the turn-table; and Fig. 2 is a sectional view of the same, taken on the line 2 2 of Fig. 1, but also showing the motor-casing in elevation.
  • 1 indicates the turn-table.
  • the turn-table is made of some suitable light but durable material, such as hard rubber, duranoid, celluloid, &c.
  • a suitable metallic bushing 4 is fastened in an opening 6 in the turn-table at its center and is retained in position by any well known means, here shown as a flange and screws.
  • This bushing is adapted to fit over the central stud 5 of the driving-spindle 8, which is adapted to be rotated by a motor energized by electricity, springs, or by hand, as choice determines.
  • a turn-table for talking-machines comprising a rotatable disk, of light non-metallic material having a plurality of series of recesses at intervals in its upper surface, flat 7 pads of soft rubber secured in said recesses, to project from said surface, substantially as described.
  • a turn-table for talking-machines comprising a rotatable disk of duranoid, having a plurality of series of recesses at intervals in its upper surface, small disks of soft rubber secured in said recesses, to project from said surface, substantially as described.
  • a turn-table for talking- 8O machines comprising a rotatable disk having a plurality of series of recesses at intervals in its upper surface, small disks of soft rubber secured in said recesses, to project from said surface, and a sound record-disk carried by 5 said table, substantially as described.

Description

UNITED STATES Patented December 2'7, 1904 PATENT EEIcE.
ELDRIDGE R. JOHNSON, OF PHILADELPHIA, PENNSYLVANIA, ASSIGNOR TO VICTOR TALKING MACHINE COMPANY, A CORPORATION OF NEW JERSEY.
TURN-TABLE FQR TALKING-MACHINES.
SPECIFICATION forming part of Letters Patent No. 778,492, dated December 27,1904,
Application filed March 14, 1902. Serial No. 98,157.
To all ZUILOIN/ it may concern:
Be it known that I, ELDRIDGE R. JOHNSON, a citizen of the United States, residing at Philadelphia, State of Pennsylvania, have invented certain new and useful Improvements in Turn- Tables for Talking-Machines, of which the following is a full and complete disclosure.
In general my invention consists in providing a turn-table which will have the record carried thereby held without the aid of screws, clamps, or other fastening meansrand it also consists in providing a table of such a construction that its eificiency is increased, with its weight and cost of manufacture decreased.
For a full and detailed description of my invention reference may be had to the following specification and to the accompanying drawings, in which Figure 1 is a plan view of the turn-table; and Fig. 2 is a sectional view of the same, taken on the line 2 2 of Fig. 1, but also showing the motor-casing in elevation.
In the figures, 1 indicates the turn-table. In this instance the turn-table is made of some suitable light but durable material, such as hard rubber, duranoid, celluloid, &c.
2 indicates recesses in the table, which recesses carry small pieces or pads 3of soft rubber or other similar material. These pads are cemented or otherwise retained in said recesses in any suitable manner. A suitable number of these pads or friction-disks are arranged upon the surface of the turn-table to give the required frictional hold upon the record-disk and at the same time support the disk at the requisite number of points.
A suitable metallic bushing 4 is fastened in an opening 6 in the turn-table at its center and is retained in position by any well known means, here shown as a flange and screws. This bushing is adapted to fit over the central stud 5 of the driving-spindle 8, which is adapted to be rotated by a motor energized by electricity, springs, or by hand, as choice determines.
It will be apparent that it is only necessary to place the record upon the turn-table with the stud 5 passing through the central opening in the same in order that the record may be in position to reproduce the sound-waves. 5 The peculiar friction resulting from the small disks not only positively carries the record with the table, .but also allows the former to yield slightly. This form of table also has the advantage over the usual plain pad of felt, rubber, or other frictional material in that no air is confined between the surface of the table and record to reduce the frictional hold between the same.
Minor changes in detail may be made by one skilled in the art without affecting the spirit of my invention, and I do not wish to be limited to the exact form and arrangen. 1t of parts as herein set forth; but
I/Vhat I claim, and desire to protect by Let- 5 ters Patent, is
1. A turn-table for talking-machines, comprising a rotatable disk, of light non-metallic material having a plurality of series of recesses at intervals in its upper surface, flat 7 pads of soft rubber secured in said recesses, to project from said surface, substantially as described.
2. A turn-table for talking-machines comprising a rotatable disk of duranoid, having a plurality of series of recesses at intervals in its upper surface, small disks of soft rubber secured in said recesses, to project from said surface, substantially as described.
3. In combination, a turn-table for talking- 8O machines comprising a rotatable disk having a plurality of series of recesses at intervals in its upper surface, small disks of soft rubber secured in said recesses, to project from said surface, and a sound record-disk carried by 5 said table, substantially as described.
In witness whereof I have hereunto set my hand this 10th day of March, A. D. 1902.
ELDRIDGE R. JOHNSON.
Witnesses:
S. V. COXETTER, J. K. MUNNERLYN.
US9815702A 1902-03-14 1902-03-14 Turn-table for talking-machines. Expired - Lifetime US778492A (en)

Priority Applications (1)

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US9815702A US778492A (en) 1902-03-14 1902-03-14 Turn-table for talking-machines.

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US9815702A US778492A (en) 1902-03-14 1902-03-14 Turn-table for talking-machines.

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2547725A (en) * 1945-01-15 1951-04-03 Soundscriber Corp Means for damping vertical modulations of phonograph recorders
US4012048A (en) * 1975-05-02 1977-03-15 Newcomb Audio Products Co. Acoustic damping turntable and adapter
US4054291A (en) * 1974-04-16 1977-10-18 Sony Corporation Turntable assembly for phonograph records
US4726007A (en) * 1986-07-03 1988-02-16 Mccormack Steven A Compact disc damper and method
US4841516A (en) * 1986-09-20 1989-06-20 Mitsubishi Petrochemical Co., Ltd. Turntable for mounting recording medium in disk form

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2547725A (en) * 1945-01-15 1951-04-03 Soundscriber Corp Means for damping vertical modulations of phonograph recorders
US4054291A (en) * 1974-04-16 1977-10-18 Sony Corporation Turntable assembly for phonograph records
US4012048A (en) * 1975-05-02 1977-03-15 Newcomb Audio Products Co. Acoustic damping turntable and adapter
US4726007A (en) * 1986-07-03 1988-02-16 Mccormack Steven A Compact disc damper and method
US4841516A (en) * 1986-09-20 1989-06-20 Mitsubishi Petrochemical Co., Ltd. Turntable for mounting recording medium in disk form

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