US983155A - Phonograph. - Google Patents

Description

ITED- str rEs PATENT: OFFICE.

WIlZ LLIA M"W. MccAULEY, or MADRID, town.

Specification of Letter s'latent.

' PHoNoGRAPH;

Application filed May 5, 1910; 'Seri'aI No. 559,513. Y

To all w om a may comm.- Be known that I, WI LIAM IV. MCCAU- LEY, a citizen of the United States, residing at Madrfichinthe county ofBoone and State.

of Iowa, have invented a certain new and useful Phonograph, of which the followingis a specification.

My invention" relates to that class of phonographs'in which the reproducing disk is provided with a weighted extension to yieldingly hold "same in'engagement with a phon'o'graphio record.

Y My object is to provide'a device in the nature ofan attachment that may be applied to 'phonographs of this class to apply a yielding pressure to the reproducing disk in order to yieldinglyhold the reproducer to the record so that shocks and jars to the phonographic instrument. will be prevented from throwing, the 'reproducer out of its proper path of travel on the phonographic record so that in using extremely hard firmly to the'record to thereby more accurately reproducethe sounds than is possible with .a reproducing instrument that is held v toward the record by a weightonly.

My object is further to provide convenient means for adjusting the spring tension to meet the requirements of use.

My invention consists in certain details, in the construction, arrangement and combi-.

nation of the various parts of the device,

whereby the objects contemplated are at tained, as hereinafter more fully set forth,

pointed out in my claim and illustrated in.

the accompanying drawings, in which:

Figure 1 shows a sectional view of a part of an ordinary phonograph having my 1m-' proved spring pressure appliance connected therewith. Fig.' 2 shows an enlarged, detail view of the arm that supports the reproducer of a phonograph .with. my improved spring attachmentappliedthereto,

. Fig. 3 shows a sectional view on the line to theframe is an arm 13 having its free end' slidingly. mounted upon a guide 14. Thesaid arm carries a. reproducer 15 and a disk hereinafter made clear.

' 16 is pivotally connected therewith and pro 1 vided with a wei hted extension 17 to yield-.

ingly-hold the disk 16 toward the record. All of the parts above described are of the Patented Jan. .31, 19 11 ordinary construction now in general use I and afurther detailed description thereof 1s deemed unnecessary.

, I My improvement consists in the nature jof an attachmentthat may be applied to any of .the

tioned.

'It consists of almetal block 18 designed to fit against-the under surface of the arm 13, At one side of the block I havefixed a metal phonographs of the class above menstrap 19 which is designed to'pass over. the

reproducer armand which is provided with a set screw 20 having its end seated in the,

side of the block -.18 opposite from the side to which said'strapis h'xed so that the block may. be adjustably a'nddetachably connected with the arm and so that may lie-firmly fixed in any position in which it is placed. Extended through the block 18' from its under side is a setscrew 21. for purposes The spring for engaging'the reproducing I disk comprises a curved: body portion 22 having one end inserted between the block "18 and the arm 13 and preferably provided with a rounded lug-23 to engage the arm 13. The other end of the; spring is placed in position against the upper surface of the extension 17 and is preferably placed in a small groove in said extension 17 to thereby prevent lateral movement of the extension relative to the spring. The arrangement of.

thisspring is such that its tension, as applied to the extension 17, can be adjusted and regulated by a manipulation of the set-' screw 21. In addition to this I have providedmeans whereby the sliding carriage containing the arm 13 may be held against up and down movement, so as to smoothly .and'evenly slide from one end of the frame to the other as follows: In the guide'lt, I have provided a longitudinal slot 24 and in the overlapping part of the arm 13, I have provided a spring actuated pin 25 designed to enter said slot and be yieldingly held therein by the spring. \Vhen this pin is in the slot it prevents up and down movements of the arm 13 and when it is desired to raise the arm the operator grasps the pin and pulls it forwardly until it is out of the slot and then elevates the arm.

a In practical operation it is obviousthat found that with a reprodncer having a weighted extension only, any jarring motion applied to the support on which the phonograph stands will tend to cause the reproducer arm to vibrate up and down to an extent sufi'icientto interfere with the reproduction of sound and in some instancesthe reproducing point will even move laterally relative to the record out of its normal path of travel, thus wholly interrupting the continuous reproduction of sounds as rethe spring serves a number of important corded on the record. The application of functions. First, it will yieldingly hold the reproducer toward the record in such a man' ner as to prevent rebound of the reproducing pointrelative to the record and in addition to this it prevents lateral movements of the reproducing disks and point so that the point will not pass out of the groove irrthe record even though the instrumentis moved or jarred during the process of reproducing sounds thereon.

This attachment is of especial advantage in connection with the use of records of the kind known as indestructible records which are hardened so that the reproducing points will not wear the records. Further when such hard records are used'there is more tendency for the reproducing point to vibrate and be shaken out of the normal path of travel onthe record and I have found that by means of the improved spring. attachment the reproducing point may be guided more accurately and held more firmly to the record than by the use of the weighted extension alone regardless of the amount of the weight.

I claim as-my invention: a

The combination with a phonograph having a reproducing disk and a weighted ex-' tension 7, connected with said disk for normally holding the reproducing disk toward a record, saidweighted extension being provided with a notch in its upper surface and an arm for supporting said disk, of a block placed adjacent to the under surface of the arm, a flexible strip fixed-at one end to the block, and passed around the ,top of the arm and having a set screw therein seated in the block for adjustably and detachably securing the block to the arm, a spring having a rounded lug thereon interposed between the block and the arm with its rounded lug in engagement with the arm, a set screw seated in the block to engage the spring, the said spring being extended to positionwith its free end resting in the notch of said weighted extension for applying a yielding pressure to the weighted extension and for lim-.

iting the lateral movements ofsaid weighted extension, substantially as and for the purposes stated.

Des Moines, Iowa, March 12, 1 910.

\VILLIAM IV. M CAULEY.

\Vitnesses MARY WALLACE, IV. A. Lov'rus.

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