US1569351A - Talking-machine needle - Google Patents

Description

lJan. l2 1926. 1,569,351

M. BLACKMAN TALKING MACHINE NEEDLE Filed Oct. 21. 1921 VEN 7.0/2`

' %0fl mma/1, unf fs By l i gr/ATTORNEY `lmatented jan. 12, `192.

UNITED STATES Lafssi PATENT OFFICE.

MABEL BLACKMAN, OF NEW YORK, N. Y., ASSIGNOR OF ONE-HALF TO ESTELLE MCKEE AND ONE-HALF TO LILLIAN K. HOSIER, BOTH OF NEW YORK, N. Y.

TALKING-MACHINE NEEDLE.

Application filed October 21, 1921. Serial No. 509,281.

To all cri/071i t wif/, y animera.'

Be it known that l. MA1-nin l'LAcuMAN, a citizen ot' the United States, and a resident of the city of New Yori-, in the county and State of New York, have invented certain new and useful Improvements in Talking- Machine Needles, ot which the following is a full, clear, and exact description.

This invention relates to phonographs and in particular to the reproducing elements thereof.

A particular object ot' the invention is the production ot a needle and associated Ipart that will tend to eliminate the metallic f chatter which is produced in that part of the needle that extends between the point thereoi2 and the needle holding chuck.

Another object is to produce a needle eneompassing element which can be sold separate from or with the needle, and which can be used with the ordinary reproducer without the necessity of changing the structure of the latter.

Dra/wings.

Figure 1 is a view in elevation of a portion of a phonograph including the reproducer and showing the association therewith l) escm'pte'on.

A phonograph comprising the usual universal arm 10 carrying the reproducer 11 is denoted generally by Extending downwarciy 'from the rcproducer 11 is the chuck 13 in which the usr-al record engaging needle 14 is held through the n'iedium ot the set screw 15.

The needle 14 is el' the usual type, which comprises enlarged portions 1G and 17 thc latter ot which is inserted into the chuck 13, both portions being connected by the reduced portion and the part 16 being gradually tapered to produce the needle point 18 which rides in the grooves of the record 19. The record 19 is supported on the usual i revolvable table 20.

The vibration deadener comprises a piece of semi-hard rubber 21 circular in shape and having a flat side 22 to allow for the operation of the set screw 15. The deadener 21 is tapered and the larger end 23 abuts against the under side of the chuck 13. A bore 24 is provided in the center of the deadener and the enlarged portion 16 of the needle is fixed therein, the bore gradually getting larger as itextends upwardly from the portion 16 of the needle, so that the needle is free to have its proper vibration above said portion. In gripping the needle as it does, the deadener prevents the usual vibration of the end thereof which produces the undesirable metallicL sound now common in reproducing machines.

The needle and the deadener are sold as one unit, or the deadener may vbe slipped over each needle as used. y

In the modification the deadener is provided with an upwardly projecting ring portion 25 which partly surrounds the flange 26 formed on the chuck 13. It can thus be seen that the deadener may be permanently attached to the chuck and form an element of the reprodueer.

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