US1283771A - Phonograph. - Google Patents

Description

N. H. HOLLAND.

PHONOGRAPH- APPLICATION FILED APR. If 1,914.

1,283,771. I Patented Nov. 5, H318.

v BY fl A TTORNEYS NEWMAN H. HOLLAND, OEWEST' ORANGE, NEW JERSEY, ASSIGNOR TO NEW JERSEY PATENT COMPANY/OF WEST ORANGE, NEW JERSEY, A CORPORATION OF JERSEY.

PHONOGRAPH.

Specification of Letters Patent.

Patented Nov. 5,1918.

Application filed April 14, 1914. Serial N 0. 831,695.

To all whom it may concern Be it known that I, NEWMAN H. HOLLAND,

a subject of the King of Great Britain, and

a resident of West Orange, Essex county, New Jersey, have made certain new and useful Improvements in Phonographs, of which the following is a description.

My invention'relates to phonographs and 'moreparticularly to such phonographs as are suitable both for recording and for reproducing'soun'd waves. t

The principal object. of my invent on is to provide an improved device of this character in which a single sound box is provided with-both a recording stylus and a reproducing stylus, the styli being preferablyso' mountedjthat the reproducer stylus is movable laterally when in operative posi-' tionto permit the same to readily follow the record groove regardless of the lateral irregularities therein, whereas the recordlng stylus is firmly held against lateral movement when in operative position. The means for holding the recording stylus against lateral movement are preferably thrown into operation automatically when said stylus is moved into operative position. A further object of my invention is to provide the sound box with an improved device arranged to track the record blank when the'recording stylus is in operative position so as to take part of the weight of the sound box ofi the stylus, this device be- -is in position for engagement with the record and thereby permitting the full downward pressure of the sound box to hold the reproducer stylus in engagement with the record. Other objects of my invention will appear more fully in the following specification and appended claims.

In order that my invention may be inore clearly understood, attention is hereby directed to the accompanying drawing forming a part of this specification and in which- Figure 1 is a view partly in section and partly in side elevation of a phonograph embodying one form of my invention, the reproducing stylus being shown in operative position;'

Fig. 2 is a view similar to that of'Fig. 1 but taken from the opposite end of the phonograph and showing both styli in elevated or inoperative position;

1n diametricallythrough. the ring Fig. 3 is an enlarged view partly in side elevation and partly in section of a part of the apparatus shown in Fig. 1, the record.- ing stylus being shown in operative position;

Fig. 4 is a 'bottom plan view of the device shown in Fig. 3, the record cylinder being omitted;

Fig. 5 is a rear elevation of the device shown in Fig. 3 with some of the parts omitted {or broken away;

Fig. 6 is a top plan view partly in section of the greater part of the apparatus shown in Fig. l; and

'Fig. 7 is a perspective view of.a detail ofconstruction.

In all the views, like parts are designated by the same reference numerals.

Referring to the drawing, the reference numeral 1 indicates the frame of the phonograph, and the numeral 2, the sound box carriage. The carriage is suppported for movement lon itudinally of the sound record or blank as by. a guide rod 4 and a guide rail 51 The guide rod 4 is mounted for oscillation in suitable standards (not shown) formed upon the frame 1 at opposite ends of the phonograph. The guide rail 5, as shown, is formed integrally on'the top of the frame 1. The carriage 2 has a forwardly extending annular portion 6 in which a ring 7 is secured, as by a set screw 8. The ring 7 carries alined pivots 9 and 10, these pivots' having their axes extend- 7 paral el to the axis of the record cylinder 3. The pivots, as shown, are threaded into the ring 7 and have conical inner ends engaging correspondingly shaped recesses in the sound box body member 11. The latter has a neck 12 whereby the same is adapted to be connected to the usual born or other sound shaped part 20 connecting the arms 17 and 18 and extending over the arm 13 is adapted to engage the latter and limit the downward movement of the diaphragm casing. The interior of the casing 16 is connected with the neck 12 of the 11 by means of extending diametrically of the diaphragm at right angles to the pivots 9 and 10. The position of the styli is such that by moving the sound box in the proper direction'about the pivots 9 and 10 either stylus may be lowered into engagement with the cylinder 3 and the other stylus simultaneously raised out of engagement with the said cylinder. To facilitate the shifting ofthe sound box to bring the proper stylus inoperative position, 1 preferably provide a lever 26 pivotally connected, as by a screw 27, to the upper face of a projection 28 extending upwardly from the ring 7. The axis of the pivot 27 extends at right angles to the axes of the pivots 9 and 10, and the forward end of lever 26 engages in a cam slot 29 inclined at an angle to the path of movement of the said lever, so that by moving the said lever about its axis the sound box may be oscillated on the pivots 9 and 10 to eflect the desired positioning of the styli with respect to the cylinder 3. The inclination of the slot 29 is such that, except during the manual operation of the lever 26, the latter prevents Y movement of. the sound box, about the pivots 9 and 10. Movement of the lever 26 in either direction is limited by the engagement of the downwardly extending portion 30 thereof with the projection 28, as ,shown by the full and dotted line positions of the said lever in Fig. 6.

In order that the recording stylus may be held against lateral movement when the same is 1n operative position, I preferably provide the lower end of the arm 13 with spaced parallel projections 31 and 32 ar ranged on opposite sides of a downwardly and inwardly tapering wedge-shaped member 33 secured to the'ring 6, as by a screw The member 33 is of such a shape that when the reproducing stylus 25 is in engagelocated between the projections 31 and 32 and the arm 13 and the parts carried thereby, including reproducing stylus 25, are free to move laterally about the axis of the pivot 14. When the sound box is moved by the lever 26 to bring the recording stylus into operative position, the projections 31 and 32 automatically move upwardly along the wedge 33, and when the recording stylus 24. is in engagement with the cylinder 3, as shown in Fig. 3, the projections 31 and 32 engage the opposite inclined faces of the wearer wedge 33, as shown in Fig. 4, and thereby effectively prevent lateral movement of the arm 13 and the parts carried thereby, in cluding the recording'stylus 24. Movement of the'sound box by the lever 26 to bring the reproducing stylus into operative posi tion automatically causes the projections 31 and to move downwardly with respect to wedge so that whenthe reproducing stylus is in operative position, it is again freelymovable in a lateral direction about pivot 14.

In reproducing a soundrecord, it is desirable that the reproducingstylus should be held in engagement with the record .with considerable force to prevent the same from being thrown of]? the record surface by the sound-waves of considerable depth. The recording stylus, however, will be caused to cut too deeply and will be subjected to too much strain if it is weighted or pressed against the record blank with force suitable for holding the reproducing stylus-in engagement with the record. I accordingly provide a construction wherein a part of the weight or downward pressure of the .parts by which the reproducer stylus is when the latter is in engagement with the said cylinder. A spring 40 encircling the pivot 36 and bearing at one end upon the arm 35 and at the other end upon the arm 13 tends to move the arm 35 and the casing 16 away from each other with a substantially constant force, so that when the projection 39 engages the cylinder 3 it acts through the arm 35 and spring 40 to support or counterbalance a definite part of the weight of the casing 16 and the parts carried thereby. the recording stylus is accordingly reduced to an extent depending upon the tension. of

I spring 40. A. screw 41 threaded into the ment with the cylinder 3, as shown in Fig.

1, the narrow portion of the member 33 is,

forward end. of the casing 16 has a head 42 adapted to support the arm. 35 and prevent the projecti0n 39 from engaging the record when the reproducer stylus is in operative position (see Fig. 1)..

The carriage 2 and the parts carried thereby may be fed along the cylinder 3, as by a feed screw 43 adapted to be engaged by the feed nut 44, which is carried by lever 45 pivoted, as atx46, to the carriage 2. A spring 47 interposed between the upper end of the-lever 45 and the carriage 2 tends to move said lever about its pivot to force the nut 44 firmly into engagement with the Downward pressure on screw 43. The upper end of the lever 45 is provided with an inclined portion 48 which is arranged to engage the under side of an arm 49 secured to the diaphragm casing 16 to lift the said casing and the parts carried thereby away from the cylinder3 when the lever 45 is moved to disengage the feed nut 44 from the feed, screw 43. By reason of this construction the styli may be moved out of engagement with the cylinder 3 simultaneously with the disengagement of the feed producing means 43 and 44. The lever 45 may be moved against the pressure of the spring 47 by means of a hand lever 50 splined, as shown at 51, to the oscillating guide rod 4 and having a cam surface 52 arranged to engage a pin 53 supported be tween parallel arms 54 and 55 projecting from opposite sides of the lever 45. *Secured at the end' of guide rod 4 is an arm 56 which is positioned, as shown in Fig. 1, to prevent the placing of a record cylinder 3 upon, or the removal of the same from the record v support 57 when the lever 45 is in the position corresponding with the lowered positions of the styli. By lifting the arm or lever 50 from-the position shown in Fig. l, the arm 56 is moved out of the path of the cylinder 3, as shown. in Fig.2, and at the same time lever 45 is rotated by the coaction of the cam surface 52 with the pin53 to cause the inclined portion 48 to engage the projection 49 and raise the styli away from the support 57 and cylinder ,3, so that the record cylinder or blank may be readily placed upon or re-,

moved from "the support. 57 without damage either to the styli or the record or blank. As hereinbefore stated the feed nut 44 is disengaged from the feed screw 43 simultaneously with the above described movement of the styli away from the record support. By lowering the arm 'or lever .50, the arm 56 is again brought into cylinder obstructing position, and the lever 45 is moved by the spring 47 to cause the feed nut 44 to engage the feed screw 43 and to permit the casing 16 and parts carried thereby to fall by gravity into operative relationship to the cylinder 3. The lever 50 passes through a slot 58in the carriage 2 and the movement of the said lever maybe limited by its engagement with the ends of this slot. I v

Numerous modifications may be made in the structure herein disclosed'without de- I claim as new and desire to parting from the spirit of myinvention, and it is' accordingly to be understood that I am not limited to the exact details herein shown and-described. a

Having now described my invention what ters Patent is as follows:

1. In a device of the class described, the combination of a diaphragm, pivoted supprote'ct by Let-- porting means therefor, a recording stylus and a reproducing stylus connected to 'sald diaphragm, means for tilting said support phragm when said recording stylus is in operative scribed.

2. 'In a device of the class described, the combination of a diaphragm, a casing therefor, a recording stylus and a reproducing position, substantially as deing means to place either stylus in operative stylus connected to said diaphragm, a pivoted member to which said casmg is connected, said casing bein movable toward and away from said mem er, and means for tilting said member about-its pivotal axis to place either stylus in operative position and to remove the other stylus from operative position, substantially as described.

3. In a device of the class described, the combination of a diaphragm, pivoted supporting means therefor, a recording stylus and a reproducing stylus connected to said diaphragm, and means pivoted for movement about an axis at an angle to-the pivotal axis of said supporting means for tilting said supporting means about the pivotal axis thereof to place either stylus in operative position and to remove the other stylus from operative position, substantially as described.

4. In a device of the class described, the

combination of a diaphragm, pivoted sup;

' diaphragm, and means pivoted for movement about an axis at an angle to'the pivotal axis of said supporting means and havmg a cam action on said supportingmeans for tilting said supporting means about the pivotal axis thereof to place either stylus in operative position and to remove the other. stylus from operative position, substantially as described.

5. In a device of the class described, the

combination of a diaphragm, pivoted supporting means therefor, a recording stylus anda reproducing stylus connected to said diaphragm, and a single member for tilting said supporting means about the pivotal axis thereof to place either stylus in operative position, and for holding said supporting means against anymovemen't about said axis when either stylusis in operative position, substantially as described.

6. In a device of the class described, the

combination of a sound box provided with a recording stylus and a reproducing stylus, meanscoacting-with said .sound box 3 for positively moving either stylus into operative position and the other out of operative position, and means arranged to track a record blank and to support part of the weight of said sound box when the recording stylus is in operative position, said tracking means being inoperative when the reproducer stylus is' in operative position, substantially as described. I

T. In a device of the class described, the combination of a sound box provided with a recording stylus and a reproducing stylus, means coat-ting with said soundbox tor moving either stylus into operative position and the other out of operative position, means arranged to track a record blank when the recording stylus is in operative position but not when the reproducing stylus is in operative position, and a spring tending to resist downward movement of said sound box with respect to said tracking means, substantially as described.

8. In a device of the class described, the of a diaphragm, a casing therecombination for, a recording stylus and a reproduc ng stylus connected to said diaphragm, a piv oted member to which said casing 15 connected, said casin being movable with respect to said 'memb en'means for tilting said member about its pivotal axis to place one stylus in operative position and to remove the other stylus fromroperative position, and

means for lifting said casing with respect to said pivoted member to move both Styluses out of operative position,.substantially as described. i

9. In a device of the class described, the combination of a diaphragm, movably mounted supporting means'therefor, a recording stylus and a reproducing stylus connected to said diaphragm, means for tilting said supporting means to place either diaphragm,

stylus in operative position, said diaphragm porting means therefor,'a recording stylus and'a reproducing stylus connected to said diaphragm, means for placing either stylus in operative position by movement of said supporting means only about its pivotal axis, said diaphragm being movable laterally when said reproducing stylus is in operative position, and means automatically rendered operative by placing said recording stylus in operative position for preventing lateral movement of said diaphragm, substantially as described.

11. In a device of the class described, the combination of a sound box provided with a diaphragm, a recording stylus and a reproducing stylus rigidly connected with said means coacting with said sound box for moving either stylus into operative position and the other out of operative position, and means arranged to track a record blank and to support part of the weight of said sound box when the recording stylus is in. operative position, being inoperative when the reproduoin stylus is in operative position, substantia ly as described.

This specification signed and witnessed this 10th day of April, 1914. ,v

NEXVMAN H. HOLLAND. Witnesses: 4

WILLIAM A, HARDY, MARY J. LAIDLAW.

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