US774100A - Phonograph. - Google Patents

Description

PATENTBD NOV. l; 1904.

C. W. NOYES.

PHNOGRAPH.4 APPLICATION HLEDYNQV. 12, 1903.

N0 MODEL.

UNITED STATEs Patented November 1, 1904.

PATENT OEEicE.

CHARLES WV. NOYES, OF CINCINNATI, OHIO, ASSIGNOR OF ONE-HALF TO JOHN H. MITCHELL, OF CINCINNATI, OHIO.

PHONOGIFIAPH.

SPECIFICATION forming part of Letters Patent No. 774,100, dated November 1, 1904.

Application filed November l2, 1903. Serial No."l80,969. (No model.)

To all whom, t nzrtyconcrn:

Be it known that I, CHARLES IV. NoYEs, a citi- Zen of the United States, residing at Cincinnati, in the county o'f Hamilton and State of Ohio, have invented certain new and useful Improvements in Phonographs, of which the following` is a specilication.

My invention relates to a phonograph. One of the objects of my invention is to ro provide a carrier from the opposite sides of which are suspended a reproducer and a recorder having the same co-relative position to the record, whereby they have acoincident path of stylate travel.

Other features and objects of my invention are more fully set forth in the description of the accompanying'drawings, making a part of this specification, in whichw Figure 1 is an end elevation, partly in seczo tion. Fig. 2 is a top plan view of the carrier.

Fig. 3 is a detail sectional view of a modiiied form of shell and holder. Fig. 4 is aplan view of the diaphragm-holder.

I have only shown so much of a complete instrument as will serve to diagram the essential relative positions of'my improvements to the other parts of the instrument. y

1 represents the main support, which is reciprocated by driving mechanism 2. The

mechanism herein shown and described forms a part of a complete machine upon which a separate application will be made; but it may be used as a constituent part of an ordinary' phonograph. 3 5 3 represents the cross guide-rod,upon which a support 1 travels.

et represents a swivel-arm the fixed end of which is fulcru med to the support 1. In the upper end of the armI, overhanging the record 5, is a swivel-bolt 6.

'T represents a carrier fixed to the swivelbolt 6. Said carrier has on the opposite sides the duplicate shells S, inclined in coincident angle relative to the carrier 7, one shell carrying the reproducer and the other the recorder. Each shell carries the usual soundtransmitting tube 9.

The carrier 7 has two pairs of bracket-arms 10. The carrier 7 is provided with the slots 13.

14:V represents the diaphragm holder to 5o which the diaphragm 17 is attached. The holders 14 are provided with the tube 14h, telescopng with the tubes 9. Each holder has an arm 18 passing' through the slot 13 of the carrier. The inner ends of said arms 18 are 55 pivotally supported between the bracket-arms 10. The shells 8 are provided with vthe slots 19, through which pass the adjusting-screws 20, the inner ends of which fixedly engage the outer ends of the diaphragm-holder1&1. 60 These bolts are provided with adjusting-nuts 21 on their outer ends, which serve to limit the movement of the diaphragm-holder relative to the supporting-shell 8.

It is obvious that the diaphragm-holders through their arms have a pivotal movement bodily to and from the record-surface.

22 represents pivot-plates afxed to the outside of the peripheral walls of the diaphragm-holder14 and extending across the 70 outside of the diaphragms 17. 23 represents the stylus-levers lpivoted to said plates 22, said levers carrying the jewel stylus-points 24, the other ends, 25, of said levers being attached to the centers of the diaphragms in the usual manner.

As a modification I have shown in Fig. 3 the shell 8 provided with a tube 8. The diaphragm-holder has no arm pivotally connecting it to the carrier; but the diaphragmholder 14 has atube 14 teleseoping with tube 8f. The shell 8 has the two spring-controlled pistons 8b, the ends of which engage through said shell and take into the periphery of said diaphragm-holder upon opposite sides. The 35 stylus pivot-plate 22 is the same. Obviously this arrangement permits the diaphragmholder to bodily move to and from the record by sliding telescoping action; but the result is substantially the same as the swinging pivotal action incident to the arrangement of Fig. 1. This result is that the inclination of the diaphragm relative to the stylus oscillations is invariable. Records, owing to oontraction, expansion, imperfection, or accident, possess many inequalities other than the stylus indentations per se. If the stylus follows such inequalities other than sound indentations of the record and the diaphragm does not, except as infiuenced by the stylus, obviously these inequalities and variations vary the normal sound recording or transmitting functions of the diaphragm, and the result is imperfect.

In my device the diaphragm responds bodily to these artificial record irregularities, so that the stylus movement relative to the diaphragm is only such as is caused by the former infiuence of the diaphragm on the stylus transmitted to the record or caused by the influence of the record on the stylus and transmitted to the diaphragm. To all of these artiicial imperfections the diaphragmholder, diaphragm, and stylus conform as a unit.

My invention is primarily designed for use in a commercial phonograph, although its features are of equal value to any instrument. The mounting' of the reprod ucer and recorder at the same angle on a common carrier intermediately pivoted to the frame of the machine and movable in the arc of a circle to and from the center of the record, so as to alternately engage opposite sides of the periphery of the record, permits these alternative instruments to be interchangeably used at will by the simple tilting of the carrier in either direction. Manifestly this simple movement throws one stylus identically into the path of the other, and the change can be availed of instantly without the slightest inconvenience to the operator.

I intend the term reproducer to cover the term recorder as well. A

Having described my invention, I claiml. In a phonograph,a carrier intermediately fulcrumed, a recorder and reproducer, suspended from the opposite sides of said carrier, overhanging the opposite sides of the i. periphery of the record, and adapted to be alternately swung to and from the record, whereby the two stylus-points alternately pursue a coincident path of travel. upon opposite sides of the record, substantially as described.

2. In a phonograph,a carrier intermediately fulcrumed, a reproducer and a recorder suspended over the record upon opposite sides of the carrier and at the same angle relative thereto whereby the stylus-points have an alternative coincident path of travel upon opposite sides of the record, substantially as described.

3. In a phonograph, a traveling support, having an arm suspended over the record, a carrier intermediately fulcrumed on said arm, and having shells, depending from opposite sides of said fulcrum, a recording instrument supported in one shell and a reproducing instrument supported in the opposite shell, said shells being' depended upon opposite sides of the periphery of the record whereby the stylus-points have an alternative coincident path of travel upon opposite sides of the record, substantially as described.

4. In a phonograph, a traveling' support, having an arm overhanging the record, a carrier intermediately fulcrumed on said arm, said carrier having duplicate shells depending from opposite sides 0f said fulcrum, and overhanging upon opposite sides of the periphery of the record, a recording' instrument supported in one shell, and a reproducing in strument supported in the other shell, said shells being counterbalanced, whereby when one instrument is swung into commission, the other is swung out, the stylus-points thereby having an alternative coincident path of travel upon opposite sides of the record, substantially as described.

In testimony whereof I have hereunto set my hand.

CHARLES WV. NOYES. Witnesses: OLIVER AB. KAISER, LUIsE BECK.

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