US811568A - Graphophone-reproducer. - Google Patents

Description

PATBNTBD FEB. 6, 1906.

G. A. MANWARING. GRAPHGPHONB REPRODUGER.

APPLIQBTIQH FILED JAN. 12, 190-1.

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UNITED s'rrrr ns PATENT orrrcn.

GEORGE ABBOTT MANWARING, OF BAYONNE, N Ell J ERSEY, ASSIGNOR TO AMERICAN GRAPHOPHONE COMPANY, OF WASHINGTON, DISTRICT OF COLUMBIA, A CORPORATION OF WEST VIRGINIA.

GRAPHOPHON E-REPRODUCER.

Specification of Letters Patent.

Patented Feb. 8, 1906.

Application filed January 12,1904. Serial 1T0. 188,795.

To all whom it 'ma'ly concern:

Be it known that I, GEORGE Assorr MAN- WARING, of Bayonne, county of Hudson, State of New Jerse have invented a new 5 and useful Gra hop one-Reproducer which invention is fully set forth in the following specification.

M invention relates to means for securing in p ace the needle of a reproducer," and its purpose is to permit the needle; to be readil inserted in place and to expedite the substitution of a fresh needle for an old one. the. resent time these needles are'held in the nee le-receiving barrel b a set-screw, and to I 5 put in a fresh needle t e screw has to be turned several revolutions, and then after the old needle is removed and the new needle put in placejthe screw has to be turned back severa revolutions, all of which calls for consid- 2o arable time and trouble. By means of in present invention most' of this is avoide he use of a split spring-socket for holding the needle has also been proposed; but no means (such as a lever) have been provided for releasing the pressure upon the needle to permit ready'removal of the same and substitution of a fresh needle.

My'invention will best be understood by reference to the accompan. g drawings,

showing1 the preferred embo fment thereof,

in whic 1 Figure 1 is a face view, and Fig. 2 is a side view, partly broken away, of a reproducer equipped with my novel means for holdin 5 the needle in "lace.

view through t e barrel 0 the st lus-bar on line 3, Fig. 4, the stylus-clamping ever bein shown in elevation. Fig. 4 is a ongitudinafi sectional view at right les to F 3.

A is a reproducer, andis a sty us-bar attaehed thereto and secured at one end to the diaphragm a while at its outer end is the usual barrel lifor receiving the needle, all of which is as usual. Instead of securing the 4 5 needle 0 in place by a set-screw, asheretofore, I make use of the followin construction.

The longitudinal slot 2 in t e side of the barrel communicates with the central bore thereof, and a transverse seat 3 is made, as indicated. In this slot 2-is pivoted, as at d, a lever D, whose lower end enters the slot 2 and is held against the needle 0 by a spring E,

that is seated in the transverse opening or re- Fi 3 is a sectiona' cess 2 through the side wall of the barrel and opening into the central bore of the barrel at its closed upper or inner end. The coiled spring E rests at its inner end against a seat e and at its other or outer end encircles a projection e on the lever D above its pivot d. At its clamping end the lever has an elongated straight gripping surface or face d, making extended contact with the straight side of the needle, thereby rigidly holding the latter in its socket and avoiding relative movement of the parts, which would prevent accurate and faithful operation of the parts when actuated by a sound-record groove to transmit vibrations to the diaphragm. Above the pivot d the lever D is in the form of a handle or projection suitable for manuall depressing the lever on its pivot against the tension of 8 ring E. V 'l he mode of operaton is obvious. Push the handle of lever D toward the reproduccr, (to the left in Figs. 2 and 4,) insert the needle, and release the handle, whereupon the needle will be securely held in place. To ut in a fresh needle, press the handle as be ore and let the old needle dro out, whereupon a new needle may be rea y inserted.

Having thus described my invention, I claim 1. In a reproducer, the combination of a needle-receiving barrel having an axial bore and havingaalso a longitudina slot communicating wit said bore for substantially the full length of the latter, and a s rin ressed lever pivoted in the up or end 0 sai s ot and havin its lower face coated entirely within said s ot whereby said face may present an extends bearing-surface against the side of an unnotched needle, the upper end of said lever being extended to provide a thumbpiece.

2. In a reproducer, a diaphragm, a stylusbar connected therewith, a needle barrel or socket at one end of the stylus-bar, a handoperable clamping-lever pivoted to the barrel and having an elon ated gripping-surface extending longitudina of the barrel and adapted to ma e exten ed engagement with the surface. of a needle when m barrel, and a spring acting on t e lever to normally press its gripping-surface into clam ing engagement wit the needle.

3. a reproducer, a diaphragm, a styluslace in the" bar connected therewith, a needle barrel or socket at the outer end of the stylus-bar, a handperable clamping-lever pivoted to the barrel and extendin lon itudinally with relation thereto, said ever avin on one side of its pivot toward the 0 en end of the barrel a. grip ing-face ada te to en age the surface of a needle in t e barrel through a slot or opening in the wall of said barrel, and a coiled spring housed in a transverse recess or chamber opening at one side of the barrel said spring pressing at its outer end against the lever on the other side of its pivot thereby normally forcing the gripping-surface of said lever into clamping engagement with the r 5 needle.

In testimony whereof I have signed this specification in the presence of two subscribing Witnesses.

GEORGE ABBOTT MANWAR-ING.

Witnesses:

C. A. L. MASSIE, RALPH LANE SooTT.

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