US1216500A - Multiple-horn phonograph. - Google Patents

Description

J. ROEVER.

MULTIPLE HORN PHONOGRAPH. APPLICATION FILED JULYIZ, 1915. RENEWED JULY I4, 19m.

Patented Feb. 20, 1917.

Egg 2 JULIUS BOEVER, OF NEW YORK, N. Y., ASSIGNOB TO ROEVER PATENT COMPANY, OF NEW YORK, N. Y., ACORPORATION OF NEW YORK.

MULTIPLE-HORN PHONOGRAPH.

reiaaoo.

Application filed July 12, 1915, Serial No. 39,245. Renewed July 14, 1916. Serial No. 109,404.

To all whom it may concern:

Be it known that 1, Jonas Ronvnn, a citizen of the United States, and a resident of the city of New York, county of Queens, and State of New York, have invented a new and useful Improvement in Multiple- Horn Phonographs, of which the following is a full, clear, and exact description.

My invention relates to improvements in phonographs of the multiple horn type. The Object of my invention is to produce a phonograph of the disk record type, in which the tone arm delivers into an extension having a plurality of outlets of gradually increasing size, each outlet connecting with a horn. I have found that by graduating and multiplying the outlets and horns in this way, I get a much better tone production, and also a greater volume. The different sizes of outlets seem to take up diiferent tones to better advantage so that as a result practically all the tones produced' and discharged through 'and amplitied in one horn or the other. Furthermore I find that by arranging these horns in a vertical series at one side of the case or cabinet which contains them, with the tone arm and reproducer above them, and with the other parts of the machine atone side and in front of the motor, I get a very nice arrangement which leaves the mechanism where it can be easily reached, and provides convenient filing space for the records. Another object of-my invention isto make the connection between the tone arm and its extension of a simple nature by which a single joint permits the tone arm to have a free laterahvertical or other movement, and to construct the joint so that it does not interfere with the ready passage of sound waves to the horns.

I Reference is to be had to the accompanying drawings forming a part of this specification, in which similar reference characters indicate corresponding parts in all the views. h

Figure 1 is a plan view of a machine showing my improvements and Fig. 2 is a front view of the machine with the screen broken away.

The machine is provided with a case or cabinet 10 which can be of anyapproved design, and which is preferably provided with a vertical-partition '11 separating the motor part from the horn portion ofthe machine shown. The machine has at the top a rotary record table 12, and is driven by a motor 13 beneath, this being shown in dotted outline. I have also shown the usual accessories, to wit, a regulator 14, motor winding handle 15, and stopping and starting mechanism 16.

Patented Feb. 20, 19117.

i The machine is provided with a suitable rep'rodueer 17 which connects with a generally horizontal tone arm 18 through which the sound waves are acarried as usual, and

this tone arm is bent downward at its pivoted extremity as shown at 19, forming a neck which is roundedotf at the extremity and enters a socket 20 which is correspond ingly rounded. The bearing or spherical portion at the end of the neck 19 is slotted laterally nearly all around as shown at 21, and a pin 22 extends through the socket 20 and the end of the tone arm, passing through the slotted portions 21. This leaves the arm perfectly free to move in any direction, and the sound Waves are not scattered because the slots 21 lie within the socket 20. A spring arm 23 is arranged near the tone armi so that when the latter is not in use it rest in the spring arm or bracket.

Leading downward into the case 10 near one end of the machine, is'an extension 24 of the tone arm, which has a plurality of outlets 25, 26 and 27 of graduated sizes, and connecting respectively with horns 28, 29

and '30, leading to one side of the casing, which as usual in such constructions is left open or simply screen covered so that the sound waves will not be materially interfered with. It will be noticed that the horns are on one side of' the partition 11, while the other side is leftfree for the motor and for record filing space. I

By having the plurality of horns and connections as shown, and by making the outlets from the member 24, that is the inlets to the respective horns, of graduated sizes, I get a very large volume of sound and pick up all the desirable tones from the reproducer 17 It will be seen that the arrangement is very simple and accessible, and it will be noted also that'the connection between the member 24 and the tone arm is such as to permit the greatest freedom of movement, and that the joint is of a very simple construction. 1

Referring to Fig. 1, it will be noticed that I also have a peculiar shape for each horn.

' The horn 28, for instance, tapers gradually till about the point 28, where it is given a llOltllS-llfls the intake at one side, the mouth is irectly in front of the motor, and by having the 'horns in a narrow space or chamber in front of the motor, I still get all the volume required because vertically there is space for the emission of a great volume of sound.

I claim I 1. A phono raph comprising a casing having a vertical partition forming two chambers,'0ne being located in the front part of the casing, a record table above one chamber, a motor below, said table to drive the same, said motor being located in the back chamber of the casing, a tone arm arranged over the front chamber and adapted to swing over the record table, a vertically arranged hollow member at one end of the front chamber having a connection with the tone arm, and a plurality of horns in the front chamber spaced apart from each other and sizes.

2. A phonograph comprising a casing, a

vertically arranged hollow member contained wholly within the casing, a series of horns vertically spaced apart and connected with the hollow member through openings of diflerent sizes, reproducing mechanism at the top of the casing, and a tone arm connecting the reproducing mechanism with said hollow member.

3. A phonograph comprising a casing, a vertically arranged hollow member contained wholly within the casing, a series'of horns vertically spaced apart and connected with the hollow member through openings of different sizes, reproducing mechanism at the top of the casing, a tone arm connecting the reproducing mechanism with said hollow member, and a universal joint connection between the tone arm and said hollow member.

JULIUS ROEVER.

Witnesses:

WARREN B. Ho'ronmsoN, ARTHUR G. DANNELL.

Images