US888089A - Record for talking-machines. - Google Patents

Description

PATENTED MAY 19, 1908.

E. R. JOHNSON.

RECORD POR TALKING MACHINES.

APPLICATION FILED AUG. 30'.1904. RENBWED 0OT.12, 1907.

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WHA/55555 UALLAnU ELDRIDGE R. JOHNSON, OF MERION,

MACHINE COMPANY, A

PENNSYLVANIA, ASSIGNOR TO VICTOR TALKING CORPORATION OF NEW JERSEY.

RECORD FOR TALKING-MACHINES.

I i Specification of Letters Patent.

Application filed August 30, 19011, Serial No. 222,6537.

To all whom it may concern.'

Be it known that I, ELDRIDGE l. JOHNSON, a citizen of the United States, and a resident of Merion, county of Montgomery, State of Pennsylvania, have invented certain new and useful Improvements in 'Records for Talking-Machines, of which the following is a full, clear, and complete disclosure of different forms thereof.

I-Ieretofore in the manufacture of 'llat disk records for talking machines it has been the practice to stamp out the record disks from a suitable material by means of a die containing a matrix upon the surface of which has been engraved or otherwise placed the record grooves, which grooves in connection with the sound box are adapted to reproduce the sounds impressed upon the original recorr. The record disks formed by so impressing the matrices have usually been of some hard, durable material which softens under the influence of heat, but which is hard and vfirm under normal conditions of temperature. The material usually employed for making these records has been in the form of flat sheets and have been of uniform thickness throughout the entire extent of the disk with the possible exception of the central portion where the label has been impressed or countersunk into the material during the pressing or forming of the record. This material, in many instances has been a substance caller duranoir which consists of shellac and certain other coloring pigments and strengthening ingredients. Other similar materials which have been used are hard rubber and cclluloid. It will be realized that these compositions are expensive when used in large quantities, especially in view of the fact that talking machine records now employed in this art have been steadily increasing in size.

One object, therefore, of my invention is to produce a record which may have all the advantages of a flat disk record of uniform thickness but which will at the same time be much lighter and, therefore, less expensive in original cost and also will be easier to handle and less expensive in transportation either by mail, freight or express.

A further object of my invention is to provide a record disk which will be easily and accurately centered upon the talking machine turntable Without the employment of unnecessary material at the center "of the record Patented May 19, 1908.

Renewed October 12, 1907. Serial No. 397,168.

wh ere the radius is too small for the ellicient recording of the sound waves.

A further object of my invention is the product-ion of a record which will have strengthening means of such form as to give a stiH' and lirm backing for the reproducing surface in connection with the central opening without the necessity of employing the amount of material required in a disk record having a smooth under surface.

Briefly, my invention comprises a disk record having the center which is 'free 'from the grooves containing the sound waves cut away or omitted forming an annular plate or sur- `face in the opening of which a card, label or centering plate may be carried for the purpose of fixing the record upon the turntable in the usual manner.

For a full, clear and exact description of these forms of my invention reference may be had to the following specification and to the accompanying drawing forming a part thereof in which Figure l is a reverse plan view of a talking machine record having concentric strengthening ribs on its under surface and having the center of said record provided with a centering plate made in accordance with my invention; Fig. 2, a similar view of a record having both concentric and radial strengthening ribs; and Figs. 3 and 4 are transverse sectional views of the records shown in Figs. l and 2, and indicating two ways of attaching the designating label which also serves in these instances as centering means. r

Referring to the drawings, the numeral 1 indicates a flat, annular piece of duranoid or other material used in the manufacture of records having a central openii 1g 2 therein and being provided upon the edge of said opening and upon the outer edge by strengthening flanges 3 and 4l. The inner edge or surface of the annular plate is provided with a lower flange 5 upon which a disk G of nietal, pasteboard or similar stiff material is adapted to rest, said disk being held in position within the said opening upon said ila-nge in any suit able manner such as by cementing or being impressed therein during the forming of the record. The cent-er of the disk 6 is provided with an opening 7 which is adapted to receive the central stud or shaft of the turntable spindle inthe usual manner.

In Fig. 2, I have shown in addition, to

the concentric strengthening ribs, radial strengthening ribs 7 which give the required stiffness to the record out to its eXtreme edge. Different forms and arrangements of these strengthening ribs have been described and claimed in a separate application filed here with Ser. No. 222,685, dated August 30,1904.

ln Fig. 4, l have shown a construction similar to that shown in Fig. 3 except that the centering disk or label rests upon a flange 9 which is at the upper portion ofthe opening 3, the centeringl disk or label 6 being forced against the same from the under side of the record and being retained thereon in the manner above referred to.

Having thus described these forms of my invention, what l claim and desire to protect by Letters Patent, is

l. ln a record for talking machines, the combination of a thin annular record portion, havinO an internal and an external flange, and radial ribs extending between said flanges; of a centering disk, engaging the inner flange of said annular portion and permanently secured thereto.

2. ln a record for talking machines, the combination of a thin annular record portion, having an internal and an external 1' flange and radial ribs extending between said flanges, with a printed label engaging the l inner flange of said annular portion and perl manently secured thereto.

,l 3. In a record for talking machines, a comi bination of a thin annular record portion l having an internal and external iiange, shoulders or seats on the inner edges of said flange, l and strengthening ribs extending between [said flanges; with a centering disk, permanently secured to said shoulders or seat` Il 4. A record for talking machines comprisl ing a substantially flat disk having a central opening therein occupying the space not taken up by the record grooves, a flange upon a the inner surface of said opening and a plate ,l of thin durable material retained in position j uponI said flange having a hole therein for l centering the record upon the turntable, said l plate also being adapted to receive printed l matter in the ,form of a label or otherwise.

J ln witness whereof, l have hereunto set my l hand this 29th day of August, 1904.

ELDRIDGE R. JOHNSON.

lVitnesses WILLIAM F. BRENNAN, Enw. W. VAILL, Jr.

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