US1303031A - Phonograph attachment - Google Patents

Description

A. .l. M. CORNS.

PHONOGRAPH ATTACHMENT. APPLICATION FILED MAY 4, 1918.

1,303,031. 1 f Patented May 6, 1919..

ALFRED J. M. corms, or oumivrmonr, wnsr VIRGINIA.

rHonoeRArHArrAcI-IMEN'r.

To all whom it may concern:

Be it known that I, ALFRED J. M. CoRNs,

a citizen of the United States, residing at Quinnimont, in the county of Fayette and State of West Virginia, have invented new and useful Improvements in Phonograph Attachments, of which the following is a specification.

This invention relates to phonograph attachments and it consists in the novel features hereinafter described and claimed. J

An object of the invention is to provide an attachment for a phonograph ofsimple structural arrangement adapted to be used for casting rays of'light upon the grooves of a disk when the same 1s in position upon the table of the phonograph in order that the operator may quickly and properly place.

the point of the instrument in the groove at the begilming thereof.

While the device is especially adapted to be used upon a phonograph of the Edison type wherein the transmitter is supported approximately parallel with the plane of the disk the device may be used to advantage in conjunction with phonographs of other types.

With the above object in view the attachment comprises a tube adapted to be enthreaded through the partition board of the phonograph casing and which may be detached therefrom. tube and is surrounded by a casing or re flector. A switch is mounted upon the partition board of the casing and is connected in open circuit with a battery or source of electric supply and the said bulb whereby upon closing the switch the electric circuit is completed and the bulb is illuminated. The tube is turnably mounted in the partition board hence the rays of light from the bulb may be directed along any part of the disk. When the tube is removed from the partition board it may be used for castlng light upon any parts of the instrument or the disks for the purpose of identifying the disks or adjusting the parts of the instru ment. A

In the accompanying drawlngz Figure 1 is a top plan view of a phono graph showing the attachment applied.

The other figures are detail views of the features of the attachment.

As illustrated in the accompanying drawing the partition board 1 of the phonograph cabinet is provided with an opening 2 which Specification of Letters Patent.

A bulb is carried by the Patented May 6, 1919.

Application filed May 4, 1918. Serial No. 232,576.

is adapted to snugly receive the end portion of a tube 3. The opposite end portions of the said tube 3 are angularly disposed with relation to each other so that theupper end portion of the said tube is approximately parallel with the upper surface of the board 1 when the lower portion of the said tube is inserted in the opening 2. The lower por. tion of the tube 3 is. provided with a rib or shoulder 1 adapted to contact with the upper surface of the board 1 and limit the A downward movement of the tube 3 in the opening 2. v A cup member 5 is screw threaded upon the upper end of the tube 3 by means of a boss 6 formed at the back of the said member 5. The shank of a bulb 7 of the usual incandescent type is located in the boss 6 and the inner end of the said shank contacts with the end of the tube 3. A block 8, preferably of wood, is inserted in the upper end of the tube 3 and the upper end of aconductor 9 passes through the said block 8 and contacts with the terminal 10 of the bulb 7, batteries 11' are located under the board 1 and the. conductor 9 traverses the length of the tube 3 and is connected with-the batteries 11 in any suitable manner. A bar 12 passes through the board 1 and the lower end of the said bar is electrically connected by means of a conductor 13 with the tube 3 at a point below the board 1. A guide 14 is mounted upon the upper surface of the board 1 and a plate 15 is slidably mounted thereon. The plate 15 carries a tongue 16 which at times is adapted to contact with the bar 12, a wire 17 connects the guide 14: with the battery 11.

When the tube 3 is in position in the open ing 2 and it is desired to cast the light over the disk which is upon the turn table of the instrument the plate 15 is moved along the guide 14 so that the tongue 16 is brought in contact with the upper end of the bar 12. Thus an electric circuit is completed from the batteries 11 to the bulb 7 and the rays of light are reflected by the cup shaped member 5 over the disk and imder the transmitter of the instrument. By turning the tube 3 in the opening 2 the rays of light may be directed in any desired lines over the surface of the disk and consequently it is possible for the person who is operating or manipulating the instrument. to accurately and properly place the point of the transmitter in the beginning of the groove in the disk. To cut off the current to the bulb 7 the plate 15 is her.

shifted upon the guide 14L so that the tongue 16 is moved out of contact with the bar 12 and the electric circuit is broken.

In the event that it is desired to use the light from the bulb for inspecting the disk prior to placing the same in position upon 7 the turn table or the instrument or for examining any parts of the instrument the tube 3 is slipped out of the opening 2 and the rays of light from the bulb 7 may be castin any desired direction. In order to permit sufiicient movement of the tube 3 the Wires 9 and 13 have ample slack to permit the use of the light within limited bounds. The batteries 11 are supported under the board 1 and in the rear portion of the cabinet of the instrument by means of bars 18 of suitable configuration and which may be attached to the back of the cabinet in any suitable man- In the present instance the said bars are shown as provided with threaded rear ends which are screwed in the back wall of the cabinet and the said bars are provided along their lengths with depressions which receive the lower portions of the batteries and hold them in proper place against the under surface of the board 1 of the cabinet. Inasmuch as the said batteries are supported at the upper rear portion of the cabinet they do not interfere with access to the lower portion of the cabinet which usually contains the disks and hence the presence of the batteries does not interfere with the free removal or insertion of the disks in the cabinet.

The phonograph is provided with a speed regulator part of which is shown at 20. A mirror 21 is located adjacent the part 20 and the rays of light from the bulb 7 may be directed upon the mirror 21 from which they will be reflected upon the part 20 and consequently the said part may be adjusted in the absence of overhead light.

Having described the invention which is claimed 1s:

1. A phonograph attachment comprising a tube of angular shape having one end disposed revolubly within a hole in the top of a phonograph, a cup-shaped member carried by the free end of said tube and provided with a threaded bore, a plug of insulating material disposed at the free end of said tube and clamped thereagainst by said cup-shaped member, a contact extending centrally through said plug, and an incandescent bulb threaded into said bore and engaging said contact, said contact in said cup being arranged in circuit with a source of current and a switch whereby said bulb may be energized.

2-. A phonograph attachment comprising a mirror secured upon the top thereof and inclined toward the speed control button of the phonograph, a tube of angular shape supported upon the top of the phonograph adjacent the free end of the tone arm, an in candescent bulb carried by said tube, and means for energizing said bulb, said bulb directing light upon the turn-table and also directing light upon said mirror for illuminating said speed control device.

In testimony whereof I a-flix my signature.

ALFRED J. M. COR-NS. Witnesses J. A. HoKE, H. C. NIoKEL'L.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents. Washington, D. 0.

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