US1156931A - Phonograph. - Google Patents

Description

C. B. RE-PP.

} PHONOGRAPH. APPLICATION man MAR. 15. 1913 1,156,931; Patented Oct. 19, 1915.

2 SHEETS-SHEET I.

Iv Inventor;

c. E, REPP.

PHONOGRAPH.

APPLICATION FILED MAR. 15. m3.

1,- 156,931,- Patented 0615.19, 1915.

2 SHEETS-SHEET 2.

b JZW I y.

Inventor:

TE sragns PATENT CLINTON B. REPP, 0F PLAINFIELD, NEW JERSEY.

PHONOGRAPH.

Specification of Letters Patent.

Patented Oct. 19, 1915.

. Application filed March 15, 1913. Serial No. 754,445.

To all zchom it may concern:

Be it known that I, CLINTON B. Barr, a

' citizen of the United States, residing at Ilainfield, in the county of Union and State of New Jersey, have invented certain new and useful Improvements in Phonographs, of which the following is a specification, reference being had therein to the ac: companying drawings, which form a part thereof.

My invention relates to phonographs, and more particularly to a type thereof wherein sound vibrations are transmitted to a diamanner to permit the adJuStment of the ma- 1 chine for use with different styles of records, such .as vertical out with V-shaped bottom, or cupped bottom, lateral cut, or

combined lateral and vertical cut.

A still further object is to provide a phonograph of this type wherein a vibration absorbent body is arranged between the transmitter arm and the supporting arm therefor, said means being connected to the transmitter arm in a manner .to minimize the tendency of vibrations to pass from said arm to said vibration absorbent body.

A still further object is to provide a phonograph of this character wherein the various supporting means for the transmitter I arm and the supporting arm therefor will a more perfect reproduction with the vertibe so constructed as to afford no loose parts which, by rattling, will have a tendency to develop cross vibrations or overtones resulting in blasts o interference with the tone quality of the sound reproduction. And a still further object is to provide in a phonograph of this character, means whereby the direction of the tensioning stress upon the diaphragm may be controlled to secure cal cut, or combined vertical and lateral cut records. I

The invention consists primarily in a phonograph embodying therein a stationary diaphragm, a transmitter arm, means whereby vibrations'passing through said arm are conveyed to said, diaphragm, tensioning means for the diaphragm, a pivotal weighted sup portingarm, and connections between-said supporting arm and said transmitter arm embodying therein a non-vibrant weighted. body of a mass suflicient to absorb vibrations passing thereto; and in such "other novel features of construction and combination of parts as are hereinafter set forth and described, and more particularly pointed out in the claims hereto appended.

Referring to the drawings Figure 1 is a plan view of a phonograph embodying my invention, with the amplifier removed therei,

from Fig. 2 is a back view of the sound box and transmission. mechanism; Fig.- 3 is a perspective view of the transmitter' arm supporting means, the outer portion of the transmitter arm being shown inconnection therewith; Fig. 4 is a front view of the com necting means between the transmitter arm and its supporting means, the transmitter arm and side bars of the supporting frame being shown in cross section; 5 is a bottom view of the vibration absorbent body and 'the flexible connection between same and .the transmitter arm, a portion of said transmitter arm being shown; and Fig. 6 is a detail view ofthe stopping lever.

Like. letters refer to like parts throughout the several views. t

In the'embodiment of my invention shown in the drawings, a indicates a ordinary cabinet having-mounted.thereon a rotary table 7 actuated by a motor, not shown, the governor controlling screw being shown at o.

Mounted upon the cabinet a radially of the table 6 is a sound'box supporting frame d upon which the sound box 6 is mounted.

The sound box e is provided with. a

sound outlet nipple e, to which the horh or other means through which the sound waves are conveyed is attached. 7 Mounted insaid sound box is an ordinary flexible'diaphragm f, in which vibrations are developed for producing the desired sound waves. Projecting over the table I) is a vibrant transmitter arm 9, which preferably 18 composed I have found in actual practice that I secure the best results by arranging the hearing between the block 1:, and the supporting arm at a point of said block forwardly of the vertical axis thereof, or toward the mount or set g. By means of. this block, I am'enabled to dispense with all springs acting upon the supporting arm and thus eliminate possibility of the development of vibration by reason of the presence of such a spring or springs. c 7

In adjusting the machine for use upon different styles of records, it is necessary to vary the-angle of projection of the transmitter arm relative to the supporting arm to permit which action I use a universal joint between these two arms. To permit such adjustment in this machine, I connect the transmitter arm 9 with the block at by means of a vertical pivot, or one extending at right angles to the axis of the pivots a,

connecting said block with. the supporting arm, providing in connection therewith, means permitting free. vibration of the arm 9 in a manner which will minimize or prevent the transmission of such vibrations to the block n.

To facilitate the connection of the'transmit-ter arm 9 with the block at and through said block with the arms m m, I form said block a with the pendant lugs n between which the arm 9 is adapted to pass without engaging said block. Closing the space be tween these lugs is a spring plate 0, the ends of which are firmly attached to the bottoms of said lugs 01, n by means of the screws 0,

or in any other desired manner, flexible gaskets 0 being interposed between said.

plate and said lugs. Intermediate the'lugs n n the plate 0 is reduced as shown to im- .part the desired flexibility thereto, and centrally thereof this plate is extended as shown 'to form a bearing for the pivot connecting i said arm 9 therewith.

To avoid looseness of the connection between the plate 0 and the arm 9, I provide said arm with a headed metallic screwstud p embedded in the material of the arm and clamped in place by means of a nut p. This stud is drilled axially thereof and a shouldered screw p is passed through the open- .ing in the extended portion of the plate 0,

the holein the opening in the stud 0 being 'interiorly screw threaded to cotiperate with said screw. A gasket 79 is inserted between the plate 0 and the head of the stud 7), and a second gasket o is inserted between the head By this construction the arm 9 is firmly attached to the plate 0, the flexibility of which.

will avoid any dampening effect upon this aim. The arrangement of gaskets 72 and 7') will act as absorbers or insulators as tovibrations which may be developed in the plate 0, and-thus cooperate with the gaskets 0 in excluding vibrations from the weighted block a.

One of the standards of the frame at has a projecting loop or hook 9 arranged to one side, or radially, of and below the diaphragm f, and the post carries a second'loop or hook r, axially below the diaphragm, the

bushing a beingdispos "1 intermediate said loops or hooks. I V

, By this construction, a stress directly axially of the diaphragm, or a stress substantially radially thereof, or a stress intermediate these-two points, may be applied thereto, thus affording three adjustments so as to adapt the machine-for use upon vertical cut, lateral cut, or combined vertical and lateral cutrecords.

The loop or hook 9 being disposed below. i

i found that the sudden stoppage resulting from the practically instantaneous application of the braking power tendsto rack the governor mechanism. To obviate this difficulty, I employ a brake mechanism comprising a lever s mounted upon a plate-s carried. by thecabinet a which lever plays'between the stops s and 8 upon said plate. One end of said lever constitutes an operating handle and the other end thereof has mounted thereon, upon an axis parallel with the axis of the table I), a roller having a friction sur face adapted to be brought into engagement with the rim Z) of the table I).

The radius of thearm of the lever s I carrying the roller t is of a length to cause said roller to he forced into the desired fric' tional contact with the said rim I) through the power of the main spring of the motor driving the table 6. By this" construction, when the brake is set, the roller 17 will rotate upon contacting with the said. rim 6 for a sufficient time to cause a gradual stopping of the table 6 and thus relieve the governor from the racking strains above referred to.

At u I have shown a rest adapted to hold the supporting arm when the reproducing stylus or needle is out of engagement with. the record. This support is arranged adjacent the frame al and on a radius of the diaphragm i which would carry the mount or set 9' free of the record. This'rest is used. to facilitate the removal and insertion of the reproducing stylus in the said mount or set.

The operation of the herein described phonograph is substantially as follows the sound vibrations indicated upon'a record are transmitted through the arm g,and loop t ton-the diaphragm in theusual manner-Q zvNVhenlateral cuti' e'cords'a're used, the strand 7 "stationary diaphragm, a transmitter arm, means whereby ivibratioi s passing through said arm are transmitted "to i said diaph'ragan,

tensioning means; for said. diaphragm,- a pivotal Weighted-supporting arm, 'and connecftions between said supporting armand'sa-id transmitter'armL j is passed over tbeloop" or hook '9'; when vertical out records are used it is'passed beg n w the Elooptorhook 11,- and when a com 5 blned vertical and lateral cut record is used ".113 is: allowed to hang directly through the opening a? i Eachti adj ustment of the strand 9- will-:eshlftthat end iof the arm. 9 which'is adj acent to the diaphragm the other end thereof having movementabout the pivot screw pand about the pivots a connecting the @Weighted block a with i the. supporting arm for the transmitter arm 9'. The spring .p1ate 0, as heretofore stated, will permit the 2o freeivibrationpot; theglarm g and furthermore ii-will=compensate for irregularities in the recordbyryielding independently of the'w'eighted block n; The manner of connecting this plate with the arm 9 will prevent any rati'lllligf' ln illlls connection and as heretofore :"s'tated,thevjoint'betweeg the block hand the 7 armsmmawill prevent rattlingat this point. I The mass of metal entering intothe block is such'las to prevent orminimize the --devel-' opment of vibrationsin this'block,thus'caus tionsbetween said supporting arm -and said ing-substantially all oi'ig-thei vibrations de velopedrin; the arm. 1 toxpa'ss therethrough ,1 to tlie diaphragm 7. Z The movements of v the arm g=.and*its supporting arm, owing to theirregularities in i the record other than the indicated' sound i waves, will have no tendencyito develop vibrationsin any part of the-:ap'paratus, and any vibrations emanating from the motor cannot be transmitted 4'0 through thecabineta and the arms m m to y' the arm 9 with resultant interference I 'have' found in actual practice,.that a phonograph constructeda s herein'shownand describedygives a reproduction of great vol-*- t5 ume'andv'ofgreatpurityof tone. N 0 loss of pitch results:- from i a division of the vibrations passingthroughv the arm 9 by reason,

of the connections between this arm; and its supporting arm," and no external vibrations:

enter" the arm 9 through said supporting;

' said arm are transmittedto said diaphragm,

M E ensioning means for said diaphragm, a pivi' otal supporting: arm, and connections ,be-' tweens'said supportingvarm and said transmitter arm vembodying. therein a weighted arm;- Thearm g by thisconstruction-risinsula-tedfrom rall L-parts ofithe machine errcepting-ithes diaphragm.1 1

Whileihactual practice I have' fo und thatv ingsor pivots beingmerely a matter of de 7 gree in the eificiency of the machine.

It is not my intention to limit my inven,

tion to the precise details of construction shownin the accompanying drawings, it

being apparent that such may be varied 3 without departing from the spirit and scope of the invention. a v Having described my invention, what I claim as new and desire to" have protected by Letters l tentfis z I 1. A "phonographembodying therein a 2. A phonographembodying therein a tensioning means for said diaphragm, a pivotal supporting arm, and connections between said supporting arm and said transmitterarm embodying therein a weighted body of a mass suflicient' to-abso-rb vibrations, or -to'be irresponsive to. vibrations passing thereto. v

i 3. A phonograph embodying therein a stationary diaphragm, a transmitter arm,

means whereby vibrations passing through said arm are t-ransmittedto said diaphragm, tensionin means for said diaphragm, apivotal weig ted supporting arm, and; connectransmitter' arm embodying-therein a flexible member carried by said supporting arm and connected with said transmitter arm.

4. A phonograph embodying therein a stationary diaphragm, atransmitter arm, means whereby vibrations passing through so i said arm are transmitted to said diaphragm,

tensioning means for said-diaphragm, a pivotal supporting .arm, and connections between said supporting arm and said transmitter arm embodying therein a weighted body of a mass fsuflicient to absorb vibrations, or to beijrresponsive to vibrations passing thereto, and a flexiblememberacarcried by said weighted body and connected with said transmitter arm. 7

5. 'A phonograph embodying therein a stationary diaphragm, a. transmitter arm, means whereby[Vibrations passing through body of a mass sufficient to. absorb vibrati'ons,ior to be irresponsive to vibrations passing thereto, pivotally connected with said supporting arm adjacent the free end thereof, a flexible member carried by said weighted body, and connections between said flexiblemember and said transmitter arm adj aceiit the free end thereof.

,6. A phonograph embodying therein a stationary diaphragm, a transmitter arm,

means whereby vibrations passing through said arm are transmitted to said diaphragm, tensioning means for said diaphragm, a pivotal supporting arm, a weighted block pivotally mounted thereon, downwardly presented lugs thereon adapted to straddle said transmitter arm, said block being of a mass suflicient. to absorb vibrations, or to be irresponsive to vibrations passing thereto, a flexible plate secured to and extending across the space between said lugs, and connections between said plate and said transmitter arm.

7. A phonograph embodyingtherein a stationary diaphragm, a transmitter arm, means whereby vibrations passing through said arm ZtI'GtIlllSIlllbtGd to said diaphragm, tensioning means for said diaphragm, a pivotal supporting arm, a weighted block pivotally mounted thereon, downwardly presented lugs thereon adapted to straddle said transmitter arm, said block being of a mass suflicient to absorb vibrations, or to be irresponsive to vibrations passing thereto, a flexible plate secured to and extending across the space between said lugs, insulating gaskets between said plate and said lugs, and connections between said plate and said transmitter arm.

8. A phonograph embodying therein a stationary diaphragm, a transmitter arm, means whereby/vibrations passing through said arm are transmitted to said diaphragm,

' tensioning means for said diaphragm, a pivotal supporting arm, a weighted block pivotally mounted thereon, downwardly presented lugs thereon adapted to straddle said transmitter arm, said block being of a mass suflicient to absorb vibrations, orto be irresponsive to vibrations passing thereto, a flexible plate secured to and extending across the space between said lugs, and connections between said plate and said'tran'smitter arm, comprising a stud embedded in the material ofsaid transmitter arm and firmly attached thereto, a pivot carried by said stud and engaging saidplate, and vibration absorbing gaskets between said plate and said stud and said pivot respectively.

' 9. A phonograph embodying therein a stationary diaphragm, a transmitter arm, means whereby vibrations passing through said arm are transmitted to said diaphragm,

tensioning means for said diaphragm, a pivotal supporting arm, the free end of which has parallel side bars of flexible material, a weighted body, cooperating bearing members carried by said side bars and said body, a flexible member carried by said body, and connections between said flexible member and said transmitter arm.

10. A phonograph embodying therein a stationary diaphragm, a transmitter arm,

tensioning means for said diaphragm, a

standard axially below said diaphragm, a.

. pivotal block mounted therein, a supporting arm, self-adjusting bearings between said arm and said block, and a universal joint between said supporting arm and said transmitter arm including therein self-adjusting bearings in said supporting arm.

12. A phonograph embodying therein a stationary diaphragm, a transmitter arm,

means whereby vibrations passing through said arm are transmitted to said diaphragm, tensioning means for said diaphragm, a pivotal supporting arm, a weighted block pivotally mounted thereon, downwardly pre-' sented lugs thereon adapted to straddle said transmitter arm, said block being of a mass sufiicient" to absorb vibrations, or to be irresponsive to vibrations passing. thereto, a spring plate having its opposite edges secured to said lugs respectively, said plate being reduced intermediate said lugs and having an extended bearing surface in the length of said reduced portion, and a pivot projecting through said bearing surface and engaging said transmitter arm.

13. A phonograph embodying therein a stationary diaphragm, atransmitter arm, a flexible connection between said transmitter arm and said diaphragm, a supporting arm, a universal bearing therefor axially below said diaphragm, a universal bearing connecting'the free end of said transmitter -.arm l with the free end of said supporting arm,

tensioning means for the diaphragm com prising a weight-and a flexible strand connecting .said weight with the endlpf said transmitter arm adjacent said diaphragm,

and means permitting variation of'the direction of the applicationofthe stress by said weight comprising a'loop'or hook below and to one 'side of'the axispf said diaphragm,

a; loop 'or hook axially below said diaphragm and means forming a bearin for sa1d strand below said loops or hook and on a plane intermediate said loops or hooks.

14. A phonograph" embodying therein a stationary diaphragm, a transmitter arm,

means whereby vibrations passing throughv said arm are transmitted, to said diaphragm,

ing a flexible strand, pressure developing,

means acting constantly upon said strand,

7 and a spring arranged in the length of said strand whereby retardation or inertia in said pressure developing means will be compensated for.

15. A phonograph embodying therein a diaphragm, a transmitter arm, means wherebyvibrations passing through said arm are transmitted to said diaphragm, tensioning means for said diaphragm, a pivotal supporting arm, and connections between said Copies of this patent may be obtained. for five cents each, by addressing Washington, De (3.

meager supporting arm and said transmitter. arm

embodying therein a stud firmly embedded.

in said transmitter arm whereby independent vibrations adjacent said stud are prevented, a weighted body, connections between said weighted body and said supporting arm, and means in conjunction with said stud connecting said transmitter arm with said body. I

In witness whereof, I have hereunto atfixed my signature in the presence of two subscribing witnesses, this .l4th day of a March, 1913.

CLINTON B. REPl.

Witnesses:

F. T. WENTWORTH, EUGENE WENING.

the "G'ommiaaioner of Patents,

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