US1246474A - Sound-reproducing machine. - Google Patents

Description

H. T. SCHIFF.

soum) REPRODUCING MACHINE.

APPLICATION mso JAN. 19. 1912.

1,246,474. v Patented Nov. 13,1917.

' To all whom it may concern:

- 7 soonn-nnrnonucmo MACHI E.

Specification of i etters Patent. Patented 13, 1917.

Application filed January 19, 191.7 Serial no. 143,203: v

Be it known that I, HENRY T. Solarium-a citizen of the United States, residing at Chlcago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Sound-Reproducing Machines, of which the following is aspecification. v

This invention relates; in .general to improvements in sound reproducing machines, but more particularly to improvements in tone arms therefor, and one of the objects of the invention is to provide animproved construction of tone arm and sound box therefor, whereby. the sound box may be readily adjusted or positioned to adapt the same for playing records of difl'erenttypes such as records having vertical sound undulations or lateral sound undulations. A further object is to provide improved means whereby the length of the tone arm may be varied to compensate thevarying distances between the stylus and the pivotal axis of the arm, when the sound box is adjusted.

A further object is to provide improved means embodying a joint, whereby the sound box is adapted for vertical adjustment and improved means whereby any wear on the parts of the joints may be readily taken up and the joint maintained tight.

To the attainment of these ends and the accomplishment of other new and useful objects as will appear, the invention consists in the features of novelty in substantially the construction, combination and arrangement of the several parts hereinafter more fully described and claimed and shown in the accompanying' drawing illustrating the invention and in which:

Figure 1 is a side elevation of a tone arm embodying this invention and showing the sound box in position to play one type of 'record. Fig. 2 is a top plan View of the parts shown in Fig. 1.

Fig. 3 is a view similar to Fig. 1 showing the sound box in position to play another type of record. 7

Fig. 4 is an elevation of the sound box and the adjacent portion of the tone arm as taken from the opposite side of Fig. 1.

Fig. 5 is a detail sectional view taken on line 5-5, Fig. 1.

Fig. 6 is a detail sectional view taken through the tone arm and fastening means for the sound box.

Referring more particularly to the draw- I ing, the nunierallO designates the main section of a hollow tone arm and-ll -designates generally a joint section having a tubular portion 12 whichtelescopes with thejmain sectionlO and is also --adaptedto be rotated in said-section. The mainsectionlO is provided with a slot13 which extends longitudinally-thereof and provided adjacent the extremities of the-slot are open seats 1-1, 15, which are'adapted to receive a yielding portion 17 connected; with a pin 18. -This pin 18 is secured to theportion 12 and passes through the slot 13, so that the yielding portion 17 will be located outside of the main section 10 and is adapted to be seated in the seats 14, 15. atfithe ends of the slot. The joint section 11 is provided with a bearing 19 into-which one end of a tubular arm 20 is j ournaled, and the section 12 is preferably provided with an enlarged entrance opening forming a surrounding flange, and which on; larged portion. is adapted to receive a .collar on-the. sleeve 20 to form an extended bearing. The joint parts are held together preferably by means of a screw 21" passing through the end of the bearing and having engagement with the end of the arm 20. Interposed between the head of the screw 21 and the end of the bearing 19 is an elastic washer 22, preferably in the form of a piece of metal concaved. This washer is adapted to take up the wear of the parts of the joint erably by telescoping the end of the portion 24 of the sound box with the free end of the arm 20. The arm 20 is preferably provided with .a slot 25 having seats 26 arranged at the ends thereof. A pin 27 is secured to the sound box and passes through the slot 25 in the arm 24. Connected with the pin 27 is a yielding cap 28 which is adapted to be seated in the seats 26 to temporarily lock the sound box in adjusted position. 'When the parts are in the position shown in Fig. 1,

the sound box will adapt itself for playing one type of record and for playing another type of record, the sound box must be adjusted into the position shown in Fig. 3.

' one end, a sound box section ad acent said be tween the point ofthe stylus and the pivotal axis of the arm and therefore in order to compensate these var ing differences the slot 13 is provided. hen the sound box is in the position shown in Fig. 1, the in 18 will be adjacent the forward end of t e slot 13, but when another form of record is to be played, the pin 18 will be at the other end of the slot and the yielding portion 17 will be seated in one or the other of the seats 14, 15 to temporarily lock the parts.

The joint formed by the arm 20 and the aring 19 permits the sound box to be moved verticallynot only during the playing of the record but also at any other desired time so as to permit the stylus to be withdrawn and re laced.

What is claime as new is:

1. In a sound reproducin machine, a tone arm having a transverse. rin adjacent end, one end of the section being journaled in said bearing, a sound box adjustably connected to the other end of said section, an annular portion encompassing the entrance opening of the bearing, the diameter of said portion bein greater than the adjacent portion of the the end of the bearing, there being a shoulder on said sound box section adapted to extend into the said annular portion and rest against said seat, and means engaging the aring to form aseat adjacent end of said sound box section and the said bearing for securing the parts together, the said means embodyin an elastic element.

2. In a sound repro ucin machine, a tone arm having a transverse earin adjacent one end, a sound box section ad acent said end, one end of the section being journaled in said bearing, a sound box ad ustably con- -nected to the other end of said section, an

annular portion encompassing the entrance opening of the bearing. the diameter of said portion being greater than the adjacent portion of the bearing to form a seat adjacent the end of the bearing, there being a shoulder on said sound box section adapted to extend into the said annular portion and rest against said seat, and means engaging the end of said sound box section and the said bearing for securing the parts together, the said means embodying an elastic element engaging the end of the bearing and a fastenmg, device passing through the elastic memr and engaging the end of the sound box section, whereby the tension of the elastic member may be varied.

In testimony whereof I have signed my name to this specification, in the resence of two subscribing witnesses, on this 16th day of January, A. D. 1917.

HENRY T. SCHIFF.

Witnesses:

IRMA M. BAKING J. A. JOCHUM, J r.

Min of this patent Ill, be obtained for he cents each, by addressing the "Commissioner of Intent.

Washington, D. 0.

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