US812512A - Gramophone. - Google Patents

Description

PA-TENTED FEB. 13, 1906 H. S. MILLS.

GRAMOPHONE.

APPLICATION FILED MAY3. 1905.

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' UNITED STATES -A'rnn'r Orion.

,nfe. 812,512.

'Specifieation o Letters Patent. Y

Patented Feb. 13, 1906.

Application filed May 3,1905. Serial No. 268,635.

1'0 at] whom it may concern:

,Be it'kn0wn that I, HERBERT-STEPHEN MILLS, a citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented a new and useful Improvement in Grarhophones, of which the following is a specification.

My invention relates to an improvement in the means for: supporting the stylus in the form of an attenuate length of wire on the reproducer of the instrument to cooperate with I the rotary record-disk, the degree of attenuateness of the wire, which is of uniform or a substantially uniform thinness throughout, being such as to cause it to present always to the'record-grooves an adequatelyfine point as it wears away withuse by frictional contact with the grooves. This fine wire is too yielding for use without support, since by undue bending in traversing the disk it wears the. record and renders it indistinct.

The object of my invention is to provide a novel construction of rigid clamp onthereprod uc er which shall serve to hold the'wire in a mannerto permit one end to protrude to the desired short distance beyond the clamp for engagement with the record and to confine the Wire throughout the remainder there- .of contained-in the clamp, so firmly and uni-' formly as to render it practically an integral part of the rigid clamp, and thus prevent any Independent vibration or movement of the Wire therein which would tend to mar or destroy the stylus action.

In the accompanying drawings, Figure 1' is a brokenview showing in side elevation the 'reproducer equipped with my improvement and in operative position relative to the recj Ol'drdlSk. Fig, 2 is a view of the reproducer in front elevation, shown broken and-provided-with my improvement. Fig. 3 is a section'taken'at the line 3 on Fig. 1 viewed in the direction of the arrow and enlarged; and Fig. 4 shows the parts of my improved clamp separated and ready to be assembled, the re movable jaw being in section and the other parts in elevation.

A denotes the disk record and B the reproducer-head,ofa gramophone. 0n the bracket C, which isfastcncd, as usual, to the edge;of

the reproducer-head and carries the transmitti-ug contact-finger D, is provided asan integral or permanent part ofthe bracket one membere of a stylus-clam E. 'Theclamp member a isla linger, referab y solid, of substantially cylindrical orm, extending parallel wire rigidly.

with the finger D, as shown, and provided with a transverse recess 6 in its rear side near the junction with the bracket. On the same side at the'outer end of the finger is formed a lip 0 toward .which the-finger tapers onfits face side, and in the last-named side near the tapered end a depression e is formed in the clamp-finger to receive the pointed end of-a set-screwcl. The other clamp member, shown at a, is longitudinally channeled on its inner side or is substantially U-shaped in cross-section and tapers toward its forward end, where it terminates in a lip f, extendingat a right angle to the body of the member, this li-p containing a minuteperforation or eye f, the rear end of the clamp member a being bifurcated and provided at the base of the bifurcation with a lip g, parallel with the lip f and containing a minute perforation or eye 9 in line with the perforationf, and. between the ends of this clamp member there extends across its concave side a yoke it, provided with a threaded opening 71 in which the set screw (1 works.

The fine wire forming the stylus Fis in serted'through the eyes g and f of the clamp member a, and the latter is appliedto the member a in a manner to cause the yoke h to surround thelatter and introduce the lip 9 into the recess lite position the movable member, whereby the lip f thereon overlaps the outer face of the lip c. The wire is then-adjusted to protrude it to the desired extent beond the lip f, when the screw 61 is turned in its bearing to tighten the members a and a together and clam between them the stylustightly secured together they grip the wire- F so firmly between them as to render it solid with the clamp and reclude'the possibility of any movement 0 the extent of wire between the. jaws, while the protruding section thereof permits the pointto engage the recordrsurface. As the protruding wire secith the clamp members thus tion, which need not project more than about one thirty second of an inch beyond the clamp, wears down with use the jaws may be separated b loosening the screw (1 to. permit the wire to e drawn out far enough to comensate for the wear,'when the jaws will be astened to other a aihto grip the wire, whiehmay e slight y kinked at the lip c if the clamp members are fastened as tightly as possible. -'The wear is so slight, however, that a single setting of the stylus-wire suf- 'fiees 'for use of the point several hundred times, and the device improves the tone quality of the instrument by rendering it more -hydietters Patent, is

1. In combination with the reproducerhead of a gramophone, a clamp adapted to hold an attenuate wire forming a stylus, comprising as one member, a finger on said head, and, ast-he other member, a body, longitudinally channeled on its inner side, fitting about and cooperating with said finger and provided with means for fastening it thereon.

2. In combination with the reproducerhead of agramophone, abracket on said head, and a clamp adapted tohold an attenuate wire forming a stylus, comprising, as one member, a finger projecting from said bracket, and, as, the other member, a body longitudinally channeled to cooperate with said finger and provided with eyes, through which to insert said Wire, and with means for fasteningthe two. members togethe 3, In combination with the reproducerhead of a gramo hone, a bracket on said head, and a clamp-aapted to hold an attenuate w re forminga StQllilllS,, comprising, as one member,a finger projieeting from said bracket and pIOV1d6dQ1'l;1 l1S-. Q l l8IT end with a lip, and, as the other member, a bodylgongitudinally channeledto cooperate with said fin r and provided with lipscontaining e ,es t :ough which oo-insert; said Wl1IQ- and wit -means for ast ng h w memhersno ther.

head of a gramophonanbrackct pn said'head,

membenafinger pro eeti'ng from said bracket andprqv dad on tsnzater end with a li and,

as the other member, a body longitudinally I channeled to cooperate with said fingerand member, a finger projecting from said bracket 5 5;

and provided with a recess near its inner end and a lip on its outer end, and, as the other member, a bodylon itudinally channeled to cooperate with said ger and provided with alip near one end to entersaid recess and with 1 a lip on its opposite end to overlap the lip on 1 said finger, the lips on said channeled member containing eyes through which to insert said wire, and means for fastening the two members together i 6. In combination with the reproducer' head of agramophone, abracket on said head,

and a clamp adapted to hold an attenuate wire forming a stylus, comprising-as one member, a finger projecting from said bracket and provided with a recess near its inner end and a lip on its .outertapered end, and, as the other member, abody bifurcated at one end and longitudinally channeled to cooperate with said finger and provided wi halip near said end to enter said recess and with alip on its opposite end to overlap thelip on said fingeig,

' the lips on said channeled members contain-e ing eyes through which to insert said wine I v 2 and a yoke ffor'minga bearingcontainingz-ai 83: 4. In combinationfwith e reproducer set-screw and surrounding said finger toeon- 1 nect the members to ether. and a clamp, aria ted to hold an attenuate 3 wire formmg a, s yljus, comprising, as, one

, H RBERT S. MILLS;

In presence of- L. HEISLAR',

J. H. LANDES.

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