US1471092A - Attachment for sound-reproducing devices - Google Patents

Attachment for sound-reproducing devices Download PDF

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Publication number
US1471092A
US1471092A US471093A US47109321A US1471092A US 1471092 A US1471092 A US 1471092A US 471093 A US471093 A US 471093A US 47109321 A US47109321 A US 47109321A US 1471092 A US1471092 A US 1471092A
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record
turntable
attachment
spindle
sleeve
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US471093A
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Blaha Ludwig
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Blaha Ludwig
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    • GPHYSICS
    • G11INFORMATION STORAGE
    • G11BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B17/00Guiding record carriers not specifically of filamentary or web form, or of supports therefor
    • G11B17/02Details
    • G11B17/022Positioning or locking of single discs

Description

0m. 16, 1923, mmm L. BLAHA ATTACHMENT FOR SOUND REPRODUCING DEVICES Filed May 20. 1921 Fig.1.
"ra atype N'TEDQ: STATES PATENT. OFFICE.
LUDWIG BLAHA, OF'LYNDHURST, NEW JERSEY.
.LTTACHMENT FOR SOUND-REPRODUCING DEVICES.
Application filed May 20, 1921.
To all whom it may concern:
Beit known that I, Luowm BLAHA, a subiect of the Republic of Austria, residing at yndhurst, in the county of Hudson and State of New Jersey, have invented a new and useful Improvement in Attachments for Sound-Reproducing Devices, of which the following is a specification.
The resent invention relates to improvements in attachments for talking-machines and similar sound-reproducing devices which employ records of the so-called disk As is well known, the conventional type of talking-machine embodies a turntable mounted on the spindle which projects above the surface of the turntable and is adapted to protrude through a centrally located aperture in the soundrecord, when the record is positioned upon the turntable for reproduction. The under surface of the record lies in continuous contact with the upper surface of the turnable, which is usually felted; and, when it is desired to remove the record,it must be raised sufiicient- 1y to enable it to be grasped by the fingers so as to permit the sides of the aperture of the record to pass freely. over the spindle. Owin to the configuration of the record and t e fact that it is relatively thin, difficulty is frequently experienced in. effecting a sufiiciently stron grip on the outer edge thereof to raise t e record from contact with the turntable. In many instances it is necessary to insert the finger-nail between the record and the turntable to raise the former so that it may be grasped, or to use some other means to effect a similar result.
The object of the present invention is to provide an attachment for talking-machines and sound-reproducing devices employing records of the disk type, whereby the record may be positively raised from contact with the turntable with. the greatest ease so that the edge thereof may be grasped and the record removed from the machine in a minimum amount of time.
, 1 Another object of my invention is to provide an attachment for facilitating the re- Serial No. 471,093.
moval of records from talking-machines and other sound-reproducing devices in which records of the disk type are employed, which may be detachably connected to the cooperating part or parts of the machine, and will be capable of movement relatively thereto so as to carry out the objects of this invention in a highly eilicient manner.
Other objects and advantages of my invention will become manifest as the description proceeds, and I would have it understood that I reserve unto myself all rights to the full range of equivalents both in structure and uses to which I may be entitled under my invention in its broadest aspect.
For the purposes of the present disclosure, I have elected to illustrate and describe one form of my invention as used in conjunction with a talking-machine of the conventional type employed for the reproduction of disk sound records.
I shall now proceed to describe my invention with reference to the accompanying drawings, and then point out with more particularity the essential elements of novelty residing therein, in the appended claims.
In the drawings, Figure 1 is a view in elevation of my attachment for talking-machines and the like shown in position on the spindle of a talking-machine, the turntable and record being in section;
Fig. 2 is a sectional elevation of the structure shown in Fig. 1, showing the attach ment in the position which it takes when the record is raised from contact with the turntable;
, Fig. 3 is a plan view partly in section of myl attachment mounted upon the spindle; an
F ig. 4 is a view in perspective of the attachment illustrated in Figs. 1 to 3, inclus1ve.
Referring to the drawings in detail, in which like characters of reference are ern ployed to designate similar parts throughout the several views, 7 indicates the turntable which is mounted on the spindle 8 protruding through the deck 9 of the talking-machine in the usual manner. In the present instance, it will be observed that the turntable 7 has a centrally located dependent boss 10 which is provided with a transverse slot or groove 11 to receive the pin 12 which passes through .the spindle 8.
The general practice is to form the turntable 7 with a centrally located annular depression, such as shown at 13, in the upper face thereof, the top surface of the turntable being covered with a felted or similar material as shown at 14.
The spindle 8 projects through the turntable 7, and the record 15 is centrally apertured to fit over the projecting end of the spindle, so that the record will be held in playing position, or, in other words, in continuous contact with the felted surface of the turntable.
In order to remove the record 15 from the turntable 7, it is necessary to separate or raise it from contact with the felted surface of the turntable by the finger tips, in order that the record may be grasped within the fingers and removed from the spindle. Obvi0usly,by reason of the fact that the record is usually under one-eight of an inch in thickness, it is difiicult to obtain a suflicient purchase on the edge thereof by the finger tips to raise the same, so that the top and bottom faces may be grasped between the fingers for lifting the record from the spindle. This is especially true where the records are of the same diameter as that of the turntable, or where they are of a lesser diameter, such, for instance, as the 10- inch and 12-inch records which are generally in use today.
In order to quickly raise the record so that it may be removed from the spindle with the greatest ease, I provide an attachment to be mounted upon the spindle which is adapted to engage the under surface of the record and by means of which it may be raised and supported during the raising movement and until the record is removed from the talking-machine or the like. This attachment comprises a sleeve or thimble 16 having a preferably integal annular flange 17 provided at its lower end. The wall of the sleeve or thimble 16 is formed with an elongated slot 18 having an offset portion 19 at its lower end, this ofiset portion registering with a slot 20 formed on the inner periphery of the flanged portion 17, as clearly shown in Fig. 1. Adjacent to the upper end of the spindle 8, I locate a pin 21 which is adapted to ride within the slot- 18 of said thimble or sleeve 16.
The attachment is positioned on the spindle 8 by passing the slot 20 and offset portion 19 of the slot 18 over the pin 21, after which the thimble is given a slight rotary movement to bring the pin 21 within the slot 18, thus permitting the attachment to be moved downwardly on the durin imroea is desired to remove the record from the machine, the upper end 16 of the thimble or sleeve 16 is grasped between the fingers and the attachment drawn upwardly on the spindle 8, the'pin 21 riding within the slot 18 to the position shown in Fig. 2. The
sleeve or thimble 16 is slightly less than the diameter of the record aperture 15, the spindle 8 being turned down sufiiciently to enable it to telescope within the sleeve or thimble, so that the attachment is freely movable in the manner described. Oct course, it is obvious that, where it is not desired to turn down the spindle, the internal diameter of the sleeve or thimble 16 may b slightly greater than the external diameter of the spindle, in which event the recordaperture 15 may be enlarged to permit the same to pass freely over the exterior of the thimble or sleeve of the attachment. \Vhere theattachment is incorporated in new structures, the proportions of the cooperating elements may be fixed in any suitable manner to efliciently carry out the objects of my invention.
While I have described my invention with reference to the specific details of structure herein shown, it is evident that the same.
may be varied without departing from the spirit and scope of my invention.
claim: 1. An'attachment for sound-reproducing machines, comprising a sleeve adapted to be telescopically mounted upon the spindle of the sound-reproducing machine, said sleeve having an annular laterally-extending flange atits lower end adapted to lie between the opposed surfaces of the turntable and record, when the record is in position on the turntable.
2. An attachment for raising phonographic records of the disk type from the turntable of a talking-machine, comprising a sleeve adapted to be slidably mounted upon the, spindle of the machine, saidsleeve having a laterally-extending flange at the lower end thereof adapted to lie between the opposed surfaces of the turntable and phonographic record, whereby the record may be raised from cont-act with the turntable by the upward movement of said sleeve on the spindle, said flange supporting the record such movement.
3. attachment for effecting the removal of phono aphic disk records from the turntable 0 a talking-machine, comprising a sleeve slidably mounted upon the spindle of the machine and provided with an elongated slot having an oifset portion at its lower end, a flange extending laterally from the lower end of said sleeve, said flange being adapted to be positioned between the opposed surfaces of the phonographic rec ord and turntable when the record is in playing osition, and means associated 'with the spm le for limiting the upward movement of said sleeve thereon, the raising of said attachment efi'ecting the withdrawal of the record from contact with the turntable, whereby the record may be grasped and removed from the machine.
4. The combination with a talking-machine having a turntable and a supporting spindle, of an-attachment forremoving disk phonographic records from said turntable, said attachment comprising a sleeve adapted to fit upon said spindle and movable longitudinally thereof, said sleeve being formed with an elongated slot having an ofiset portion at its lower end, a flange extending laterally from the bottom of said sleeve, and a pin in said spindle adapted to ride within said elongated slot and limit the upward movement of said sleeve relative to said spindle.
5; An attachment for removing a phonographic disk record from the turntable of a talking-machine, omprising a sleeve having a laterally-extending flange at its lower end, said sleeve bein adapted to be positioned on the spindle 0%:1 talking-machine so that said flange will lie in contact with the turntable, whereby said sleeve will extend through the record aperture when the record is positioned on the turntable, the upward movement of the attachment relative to the spindle effecting the withdrawal of the record from the turntable.
6. The combination with the spindle of a talking-machine having a turntable adapted to support phonographic disk records, of an attachment for withdrawing the records from contact with the turntable, said attachment embodying a sleeve mounted on said spindle and formed with an elongated slot having an offset at its lower'end, a fla e extending laterally from the bottom of said sleeve and provided with a recess registering with said offset, a pin in said spindle, said pin being adapted to pass through said .recess and said ofi'set, whereby a rotary movement of said attachment will .permlt said pin to ride within the elongated slot in said sleeve and limit the upward movement of said attachment relative to said '5 indle.
7. The herein described disk li r comprising a base adapted to co-operate. with the-bottom surface of a disk, and a pedestal connected to the base and extending at an angle therefrom and adapted to pass through the center hole of the disk.
' LUDWIG BLAHA.
US471093A 1921-05-20 1921-05-20 Attachment for sound-reproducing devices Expired - Lifetime US1471092A (en)

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2651523A (en) * 1951-02-28 1953-09-08 Webster Chicago Corp Adapter for phonograph records
US4125264A (en) * 1977-07-25 1978-11-14 Theodore Reiss Record positioning device
US4458347A (en) * 1980-05-09 1984-07-03 Darnall Jr Thomas A Record centering and decoupling devices for turntables
GB2287120A (en) * 1994-02-24 1995-09-06 Real Sound Company Limited The Record players
US20070090006A1 (en) * 2005-10-26 2007-04-26 Jeffery Kelsch Spindle sleeve

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2651523A (en) * 1951-02-28 1953-09-08 Webster Chicago Corp Adapter for phonograph records
US4125264A (en) * 1977-07-25 1978-11-14 Theodore Reiss Record positioning device
US4458347A (en) * 1980-05-09 1984-07-03 Darnall Jr Thomas A Record centering and decoupling devices for turntables
GB2287120A (en) * 1994-02-24 1995-09-06 Real Sound Company Limited The Record players
GB2287120B (en) * 1994-02-24 1998-03-11 Real Sound Company Limited The Record player turntables
US20070090006A1 (en) * 2005-10-26 2007-04-26 Jeffery Kelsch Spindle sleeve

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