US1480980A - Disk sound record - Google Patents

Description

Jan. 15, 1924. 1,480,980

l.. P. BARLOW DISK SOUND RECORD Filed Aug. 19, 1918 etented Jan. i5, 1924.

een

nassen n. aw, or new VEN, CONNECTICUT,

dem@

EDMONJDS, F NEW YORK, N. Y.

3315K SUND RECRD,

Application med August R9, Serial No. @$9,652.

To all whom it may corncem:

Be it known that l, LESTER P. BARLow, a citizen of the United States, residing at New Haven, in the county of New Haven e and State of Connecticut, have invented certain new and useful Improvements in Disk Sound Records, of which the following 1s a specification.

My invention relates to sound-records of i@ the disk type, bearing record-groovesof any known character. At resent it is common to manufacture and sel disk records bearing musical or other selections on theE two Jfaces thereof and it often happens that a is purchaser of such records wishes to obtain a selection on one side of the disk and does not care for the selection on the other side. There are, however, various considerations which make double-disk records preferable 2o from the manuacturin and selling standoints over disks bearing records on one ace only. The chief object of :my present invention is to make is possible forsalesagents to keep in stock comparatively thin disk records bearing selections on one face of each of the same only, from which the customer may make his selections, after which pairs of such single records may very readily and simply be secured to ether so to form double records, each of whic carries sound-records which are entirely of the choice of the customer. Such double records may be of approximately the same thickness as the double records now sold, se and may be used for reproducing the selections thereon as effectively as are the present double disk records.

l accomplish this object by securing the single record-bearing disks together prefee erably with a thin layer of filling material interposed between the non-record-bearing faces, the disks bein readily secured in firm relation to each ot er by various means, such as metallic strips crimped about the peso ripheral edges, or sleevelike pieces extending through the central openings of the disks and crimped or riveted over the faces of the disks, or by adhesive material interposed between the disks, or by all of these sa means together, or by other similar means.

Other objects will appear hereinafter.

In order that my invention may be more clearl understood, attention is hereb directe to the accompanying drawings, orming part of this application and illustratincertain embodiments of my invention.

n the drawings, Figure l represents a vertical cross-section through a pair of single disks during the process of securing the same together; Figure 2 is a similar section, showing the disks secured firmly together; Figure 3 is a top lan view, partly broken away, of the doube disk shown in Figure 2; and Figure 4 is an enlarged artial section, similar to that shown in `ig `ure 2 but illustrating a modification. Referring to the drawings, a pair of disk records are shown at 1 and 2, each of which bears a suitable sound-record on its outer face l or 2. The inner or opposite faces of thedisks may be plain or may be formed with etched or molded lines, or with depressions and projections of various kinds, in order to overcome shrinkage stresses in the record material.' rlhe disks may be formed of any suitable record-forming composition, and are preferably comparatively thin, so that preferably the completed double record will be of about the same thickness as the present double records.

When the disks 1 and 2, desired to form a single double-disk unit, have been selected, they are placed together by the salesman, with the record-bearing faces outermost and preferably with a thin layer of filling material, 3, which may be cut to disk form, interposed between the same. This filling material may be a sheet of paper or fiber or the like, coated with or impregnated with adhesive or cementitious material, which may be used for bindin the two single records firmly together. uch cementitious or adhesive material will, of course, va with the character of the material of whih the records'are formed, but is preferably of such a character that a simple moistening of the sheet 3 will be suiicient to cause the same to adhere firmly to the disks 1 and 2 when the latter are pressed together. lf desired` the interposed disk 3 may be formed with projections or depressions adapted to coact with corresponding depressions or projections which'may be formed in the inner faces of the two record- disks 1 and 2, in order to guard more surely against relative rotation between the disks when they have been assembled into a unit. In some cases, also, it may be found suliicient to IGHOR T@ SUEL OWEN 1 inter a layer of material such as 3, whic carries no adhesive material at all,

this being merely for the sake of preventing vibration or rattling between the two disks of a unit, the bindm together of the two being accomplis edentirely by other means, such as the edge-clampin means. Also, in some cases, it may be foun that an interposed disk of any character is unnecessary, the two sin le. disks of a unit being provided with esive material upon their Yinner faces, such that the two dlsks may be secured together by this interposed adhesive to prevent rattling of the same during the reproduction of the record. In general, however, in view of the lusual inequalities of the surfaces of therecords, I

vconsider it preferable to interpose a layer of yielding material between the two disks, as stated. It is, ofcourse, unnecessary to give the faces of the single records any smooth or leasing finish, since these surfaces will Ee covered up in the complete double records.

The records may be secured together by an edge-clip 4, which is preferably formed of thin sheet-metal and which may be kept in quantity in the sales-rooms in which the records are sold, properly formed to fit around the double records to be assembled. In order that` such use of metal may not affect the reproduction of the record, a washer 5 of felt or other similar material may be interposed between the eds of the records and the metal strip 4. e single records are also referably further held together by means o thin sleeve-pieces 6 formed of thin sheet-metal, which may be inserted in the central openin of the disks to surround the spindle on which the record is to be placed on the turntable of the reproducing machine. If sleeves 6 are used, the axial openings of the records must, of course, be made su-iii'- ciently large to accommodate the same. If desired, a washer 7 of felt or the like may be interposed between the metallic sleevepiece 6 and the material of the two disk records;

Having mounted the parts in the position shown in Figure 1, it is merely necessary to press down or crimp over the edges of the peri heralbinding-stri 4 and t e central bin ng-sleeve 6 into t e position shown in F' re 2, in order to clamp the single recor firmly together. This may readily and uickly be accomplished by various means orming no part of the present invention.

When the double record is thus formed, the edge and central metallic ianges may extend slightly over the planes of the record-bearing surfaces, as is indicated in Figure 2. While this slightly increases the lateral space taken by the record in a filing cabinet or the like, an advantage is to be noted, namely, that composite records thus formed may with metal surfaces only in contact, so that the record surfaces are protected against being scratched, when piled one upon the other, or when slid over a table, or the like. Such protection of the record surfaces constitutes one of the features of my invention, which is not limited to the type of record previously described. Disk records of various characters, such as are now made, having sound-records on one or both faces thereof, may have the record surfaces pro tected against marring or scratching by having the marginal surfaces and the surfaces immediately surroundin the central opening raised somewhat aove the plane or lanes in 'which the record grooves are ormed. This may be accomplished by viding the disks with members of metall-:r other material such as are shown at 4 and 6 in Fig. 2, with slightly rounded edges, the washers 5Y and 7 also preferabl being used, if members 4 and 6 are of meta Or 1t may be accomplished by so molding or formin the recor s as to accomplish the same resu t without the use of added members such as 4 or 6; that is to sa the record-bearing surfaces may be slight y countersunk, or circular iianges such as those shown at 41 and 61 in Fig. 2 otherwise provided of the same material as that of the body of the disk, in order to protect the record surfaces. The outer faces of the raised portions adjacent the periphery and adjacent the central opening should, of course, be in substantially the same plane, to form a base on which the disk rests.

As a modification, however, in case itis be placed one upon the other" deemed desirable to keep the thickness of the double records to as small an amount `as is possible, the construction illustrated in Figure 4 may be used, in which the ed es ofthe peripheral binding-strips v4 and t e washers 5 are pr into recesses which ma be formed on the outer faces of the recor adjacent t0 the edges-thereof, the central sleeve 6 and washer 7 being correspondingly pressed into similar recesses surrounding the central opening of the record.

Having now described m invention, what I claim as new therein an desire to secure by Letters Patent is 1. As a new article of manufacture, a sound record comprisin two separate competl relatively thin dis s connected back to 2. As a new article of manufacture, a

sound record comprising two thin disks each of which alone would be too thin to stand ordinary practical handling, each disk having a sound reproduction upon one side of a predetermined selection, said disks being attached back to back so as to forma combination record.

3. As a new article of manufacture, a

double sound-record comprisin a pair of disks each having a sound-recor formed on one face thereof, arranged in parallel relation with the record-bearing faces outermost, a thin layer of filling material between said disks, adapted to prevent rattling of one disk against the other during reproduction, and means for securing sald disks ixedly together, said disks being of usual sound-record material and considerably thinner than ordinary rigid commercial sound-record disks, so that they would not be adapted to render an effective reproduction with full volume, if used alone and unsecured to a base.

4. As a new article of manufacture, a double sound-record comprising a pair of thin disks each having a sound-record formed on one face thereof, arranged in parallel relation with the record-bearin faces outermost, and means for securing sai disks fixedly together, said disks being of usual sound-record material and considerably thinner than ordinary rigid commercial sound-record disks, so that they would not be adapted to render an effective reproduction with full volume, if used alone and unsecured to a base.

This specification signed and witnessed

Images