US1469451A - Stylus mounting for reproducers - Google Patents

Description

Oct. 2, 1923. 1,469,451

' J. A. BROWN STYLUS moun'r me FOR REPRODUCERS Filed March- 2, 1922 serenaded. 2,- 1923.

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JULIUS A. BROWN, 01? PEEKSKILL, NEVT YORK, ASSIGNOB TO ERNEST LOOMIS, OF

PEEKSKILL, NEW YORK.

STYLUS .MOUNTING FQR REPRODUCEBS.

Application filed i'liarch 2, 1922. Serial No. 540,436.

To all whom it may concern:

Be it known that I, JULIUS A. BROWN, a

native of Austria, and who has applied for citizenship ofthe United States of America, and a resident of Peekskill, in the county of lVestchester and State of New York, have invented certain new and useful Improvements 1n Stylus Mountings for Reproducers,

of which the following is a specification.

1 This invention 'hasfor its object to pro-- vide an improved resilient mounting for the stylus arm in a phonograph reproducer,in

. which the plate spring is extended in several directions to facilitate the vibration of the parts; and which is provided with means for adjusting its tension,,whereby the character of the vlbration can be easily-regulated.

In the accompanying drawings showing Fig. 5 is a plan View of certain parts.

The reproducer is of the usual form pro vided with a frame 1, and a diaphragm 2. 7 The stylus arm 3 is secured at one end to the diaphragm, and'has it-s other end connected ith a bracketei havlng a socket portion 5 for engaging the. usual needle 6, secured the spring being secured to said ears, the uptherein by a set screw 7." These parts can be of any desiredconstruction.

For the mounting of the bracket at, I pro vide a plate spring '8 having lateral extension or ears 9 and 10 at the extremities, shown as apertured, the spring being secured to the bracket 4, at its middle portion where it is bent to a curve. V

The frame 1 is provided with a pair of ears 11 and 12, having bolts 13, 14, for engaging the apertured ears 9 and 10, whereby the spring carrying the bracket and stylus arm is secured to the frame forvibration.

I also provide a bar 15 bowed at the middle portion, with itsends perforated to engage the bolts 13 and 14, see Fig. l. Preferably the blocks 16, 16, are placed between this bar, and the spring, and similar blocks are placed between the spring and the ears on the frame. VWhen so assembled nuts are placed on: these bolts, thatwill serveto lock 3 the bar and the springs to the ears as shown. It willbeseen that the bar 15 is bowed to extend free from anyof the'other parts,

and is engaged only at itsend portions. This 7 serves to strengthen the connection ofthe f spring with the two ears on the frame.

The spring plate 8 has its upper end bent transversely as indicated at 17, which bent portion is cut away at 18around the post or bracket 5 as shown. This will serve to give a certain amount of rigidity to: the

spring, that will prevent an undue amount of vibration and strengthen its connection which will produce the desired vibration of the diaphragm; A devic e ofthis character is found to produce very advantageous re sults, as the meta lic sound'frequently produced is taken away, and also thes'cratching or grating effect hasbeen eliminated. The

two boltsserve'to mount the spring and its bar in a very rigid andsecured manner on the frame. 7

V /Vhat'I claim is: l. A stylus mounting comprising a frame having apair of ears at one side, a plate spring,a stylus arm secured to the spring at its m ddle portion, the end portions of per edge of the spring, being extended transversely to the spring, but free from the arm. 2. Alstylus mounting comprising a frame,

.85 a plate spring securedat its ends to said 4 frame, allange projecting laterally from the free edge of said plate spring, and having an opening in the portion adjacent the plate-j spring, and a stylus arm secured to the.

middle portionof the plate spring and .pro-

jecting through the opening free from the Signed at PeekskilhN. Y.,'on Februa y p JULIUS A. BROWN.

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