US1247861A - Sound-reproducing apparatus. - Google Patents

Description

S. D. MOTT.

SOUND REPRODUCING APPARATUS.

APPLICATlON FILED FEB. 7.191s.

INVENTOR (///7Z(6/ /770 Offer/1 f/lsr UN]1TED snares PATENT other.

.saniunr. n, norm, or PASSAIC, new JnitsnY, ASSIGNOR or ONE-HALF ro earner. n.

. SULLIVAN, or ALLENDALE, new JEasnY.

soulvn-anrnonuoiive arraiaarus.

11.24%861. Specification-oi Letters Patent. v Paibgmitqgqfl Nwv 2%, 1911'? Application filed February 7, 1916-. Serial No. were. i

- J To all whom it may concern: ameter without providing the special comto Be it known that ll, SAMUEL D. Mom, a pensating devices above referred to and citizen of the United States, and a resident which permits the reproduction of comof Passaic, inthe county of Passaic and positions heretofore not practical.

State .ofNewJersey, have invented certain Other objects will be apparent from the new and useful Improvements in Sound-Revsubjoined description, among which might producing Apparatus, of which the followbe mentioned the reduction of the number mg is a specification.- s of movable joints or connections in the re- This invention relates to sound reproducproducing arm to which the sound box carry- 1o ing apparatus such as phonograph's, gramoing the stylus is attached whereby the lia- 15 attain a sound repr phones and the like and more particularly bility to loose connections owing to conto the types of J apparatus, known as disk tinued use and the consequent imperfect opmachines. eration of the arm is practically overcome.

Among the ob ects of the invention is to i The invention consists in the improved oducnig machine using construction and operation of sound reproa disk record in which the stylus will mainducing apparatus hereinafter described and tain the same relation to eachrecord groove in the details of construction and combiin which it is traveling without the pronations of parts hereinafter more particuvision of special compensating devices and larly set forth and then specified in the so attachments for varying the position of the claims. stylus. needleas it travels in the record In theaccompanying drawingahigure 1 cove. The most advantageous relation illustrates in plan view the mechanism, in or the reproduction of sound is to posiaccordance with this invention, for rotating tion the stylus or needle so that it will be the record and for causing it to travel 25 tangentto the record groove in which the bodily, the balance of the apparatus being stylus p is engaged. By maintaining this gremoved. position for all grooves of the record, in- Fig. 2 is a side elevation and partial crosscreased life is given to the record and a section through a sound reproducing appamore perfect reproduction of the sound is ratusconstructed in accordance with this 3o 1 attained, as when the position of the stylus invention, the cabinet containing the amplivaries from tangency, the needle breaks or fying horn being broken away. chips thewalls of the grooves and destroys Fig. 3 is a similar view illustrating a the record as well as failing in accurately slight modification in the disposition of the reproducing'all the sounds registered in the 7 disk driving mechanism.

3 as groove. I am aware that it has been here- Fig. 4. is a similar view to Fig. 3 showing tofore proposed, especially in machines in the parts as shifted'to position to return the so which the record disk rotates ona fixed su'pturntable to its original position. port andthe sound box travels-across it, to Fig. 5 is a plan view of the apparatus. vary the relation of the sound box to the In the drawings, 1 indicates a cabinet or to record as it moves across it by mechanical box upon or in which the operating parts A compensating devices of various designs, but of the apparatusvare mounted. 2 indicates a us such expedients have failed to come into horizontal, driving shaft provided with a commercial pract ce Owing to the undesir-. screw thread. or worm 3 .formed thereon. ability of increasing and complicating the lhe shaft 2 is rotatablymounted in suitable a5 mechanism of sound reproducing machines bearings ,formed in standards 4: supported with the attendant unreliability. By this by the cabinet. or box 1, in the form illus- We inveiition' I maintain the sound box in a trated in Figs. 1 -and 2 the shaft being a stationary position and cause the rotating mount on the top of thecabinet. 5 indicates record disk to travel with relation to it in a pinion carried by a vertical spindle 6 and so such manner that I maintain tangency of meshing with the screw threador worm 3.

the stylus with the groove in which it is The spindle 6 supportsand carries the turnroe v traveling. 1 1 table 7 which in turn carries the record disk Bythis invention it is also possible to suc- 8. as usual. -The spindle 6 is supported and cessfully employ records of almost any dicarried-by an arm 8 loosely and pivotally mounted to travel freely 2. The "rack 11 resting on the top of the 'by brackets 10 from the by the usual gooseneck 16 of the amplifying horn on a guide rod 9 supported parallel with the driving shaft 2 standards 1.

11 indicates a toothed arm 8, the teeth of which are adapted to mesh with the screw thread 3 on the shaft shaft 2 supports the turntable 7 in horizontal position with the pinion 5 in mesh with the screwthread 3.

12 indicates a motor of any suitable kind for glvmg rotation to the driving shaft 2. Upon rotation of the shaft the pinion 5 is. rotated by the screw thread 3 thus rotating the spindle 6 and turntable 7 about its axis and at the same time by means of the engagement of the rack 11 with the screw thread 3 the spindle 6 carried bodily and longitudinally. of the driving shaft, the various directions of rotaiion and travel being indicated by arrows in The turntable 7 may be returned to its initial or any other position at any time by swinging the arm 8 upward about its pivot connection on the guide rod 9 which action removes both the rack 11 and pinion 5 from engagement with the screw thread 3.

13 indicates a reproducer arm fixedly mounted on the cabinet 1 in a stationary position. The reproducer arm is provided with a sound box 14 of any desired construction having a stylus or needle 15 adapted to travel in the record grooves in the disk ,5 as well known in t e art. The sound box is pivotally connected with the reproducer arm so that the sound box and stylus maybe swung away and held free of the record as usual.

The reproducer arm 13 passes down into the cabinet 1 and terminates in an amplifying horn 17 of any desired construction or arrangement. The location or arrangement forms no part of the present invention and further illustration is deemed unnecessary.

In the form of the invention shown in Figs. 3 and 4 the parts and operation are the same as above described except that they are located within the cabinet 1. and the driving shaft 2 is supported in the sides thereof while the guide rod 9 is supported in standards 18 depending from the top of the cabinet. I

In both forms rotation of the shaft 2 y means of the motor causes the record disk rotate and travel bodily under the stylus 15 I in the grooves of the record v reproduces the sounds recorded therein. It

which traveling will be noted that the stylus remains in one vertical position and is at all times tan ent to the record groove in which it is traveling, the pitch of the screw. rack and pinion being synchronized with the record. grooves.

It will be understood that the invention is rack secured to the Y and turntable 7 are By the term stationary sound box herein it will be understood that a sound box which does not move zontal plane is intended as it may move in a vertical plane to follow the undulations of the record dis What I claim as my invention is 1. .In an apparatus for reproducing sound, the combination of a stationary reproducer arm, sound box and stylus, a turntable, a rotatable feed screw and means engaging said feed screw and adapted to rotate said turntable and move it bodily with respect to said stylus and sound box. I

11 an apparatus for reproducing sound, the combination of a stationary reproducer arm, sound box and stylus, a turntable, a feed screw and an arm carrying said turntable and having means engaging said feed screw to rotate said turntable and move it bodily with respect to the stylus and sound box.

3. In an apparatus for sound, the combination of a stationary reproducer arm, sound box and stylus, a turntable, a feed screw and a pivoted arm having means engaging said feed screw and adapted to rotate said turntable and move it bodily with respect to said stylus and sound screw for rotating said turntable and a toothed rack also engaging said feed screw for moving said turntable bodily with respect to said stylus and sound box.

In an apparatus for reproducing sound, the combination of a stationary re producer arm, sound box and stylus, a turntable, a rotatable feed screw and means engaging said feed screw and adapted to rotate said turntable and move it bodlly wlth respect to said stylus and sound box, said means also being adapted to be lifted out of engagement with said feed screw to permit said turntable to be moved independently said feed screw.

7. In an apparatus for reproduclng sound, the combination of a stationary reproducer arm, sound box and stylus, a turntable, a feed screw, a rod running parallel to or travel in a hori reproducing box and stylus, a turn-.

raised on its pivot to release said pinion and IRENE LEFKOWITZ.

said feed screw, an arm pivoted to said rod toothed rack from their engagement with 10 and supporting said turntable, a pinion ensaid feed screw.

gaging said feed screw and connected with Signed at New York, in the county of said turntable for rotating the same and a New York and State of New York, this 1st toothed rack carried by said arm and also day of February, A. 13/1916.

engaging said feed screw for moving said SAMUEL D. MOTT. turntable bodily with respect to said stylus Witnesses: and sound box, said arm being adapted to be F. B. TOWNSEND,

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