US1726574A - Phonograph and method of controlling the same - Google Patents

Description

S pt. 3, 192 y r J. M. LUCARELLEETAL 13261574 PHONOGRAPH AND METHODYOFJICONTROLLING 'rnn' sum Original Filed Jan; 8, 1925 I mvzrwonsr JOSIE'P/l/V. Ll/OAREZLE w- ATTORNEY Patented I Sept. 3, 1929.

v 1,726,574; UNITED STATES PATENT OFFICE;

JOSEPH M. LUGARELLE, OI BRIDGEPORT,.AND JOHN E. REN'HOLID'JE, OI STRA'I'IORD,

GONNEOTICUL ASSIGNOBS 1'0 DIOTAPHONE CORPORATION, 01 BRIDGEPOBT, CON-' NECTICUT, A CORPORATION 01' NEW YORK. I

PHONOG BAPH A ND METHOD OF CONTBOLLING THE SAME.

Application filed January 8, 1825, Serial- No, 1,245. Renewed November 20 1928.

Figure 1 is a perspective view of the car-.

riage of a transcribing machine, showing one embodiment of the present invention as applied thereto.

Fi 2 is a side elevation, partly in section,

showlng the feeding and back-spacing mech- P anisms for the transcribing machine, and means for controlling the stylus during the backward movement-of the carriage, said means being in its normal inactive position.

' Fig. 3 is a view similar to Fig. 2, but showing the stylus controlling device in operative position.

Fig. 4 is a bottom plan view of certain parts ofthe device shown in Figs. 1,2 and 3, more clearly indicating the preferred shapes of these parts.

Fig. 5 is a perspective view of an auxiliary key adapted to be attachedto the usual backspace key -to facilitate the operation of the latter.

QThe phonographic machine shown in the accompanying drawingforthe purpose of,

illustrating this inventlon, isa transcribing machine and has a carria 10, mounted on guide rods 11 one of which is shown, and comprising ahead 12 adapted to support a: sound-- box '13 for reproducing the sound recorded on a record'14. The sound-box 13 comprises a diaphragm 15connected b a link 16 to a lever tal pivot 23, in a part hereinafter referred tov fixed inthe carriage frame against vertical movement. And, to allow the stylus '18 to freely track the record, that is, laterally follow the grooves of the record, to compensate for minute differences between the record groove and the feed-screw, the horizontal pin 23 of the lever 22 is mounted in a bracket or support 24 which itself has a verticallydisposed pivot25 mounted on the carria e head 12. T e pivot'25 is so located in a p ane at right angles to the longitudinal axis of the record to allow the floating support 22 with its stylus lever 17 to swing laterall in followin the grooves of the record. The upper end 0 the pivot 25 has a bearing in a housm 26 in the head 12, and the lower end is hel by a bracket 27 secured to the head 12.

In addition to the function above described,

the horizontal pivot 23 of the floatin -support 22 allows the latter with the stylusever and stylus to be raised from record-engaging osition when desired. To do this, when it is desired to movethe soundebox carriage for any large extent along the record, and when it 1s desired to remove the record from the machine and lace another record uponthe machinei the oating support 22 is provided with a epending arm 28 adapted to be engaged by an arm 29 carried by a carriage release lever- 30. 4

This release lever 30 is so arran ed that when the operator raises its forward end, its rearward arm 29 enga es the arm 28 of the floating support 22, an raises the latter with the stylus from the record surface. Atthe same time, the arm 29 of the releasing lever engages an arm 31 forming part ofa feednut 32 which engages a feed-screw 33 of the When the releasing lever 30 is allowed to return to its lower position under the influence .of the spring 32, the floating support 22 falls, due to its own weight, and the action of a spring 35 located between the su port and an arm 36 on the bracket 24, until the stylus engages the record.

To move the carriage backwardly a ,small extent, as when it is desired to repeat the dictation just heard, to verify it, the carriage is moved by-back-spacing mechanism comprising a back-space lever 37. This lever is mounted upon a tubular bearing '38 cast in the carriage 10, and is provided at its top portion with a lug 39 pivotally carrying a pawl 40. When the back-space lever is operated, the pawl 40 engages a rack 41 seto thereby avoid producing in the opeiators ears, a loud and unpleasant noise. This conditionnvas heretofore tolerated because the stylus, due to its freedom of lateral movement, would not necessarily follow the carriage in its back-spacing movement-s unless it were raised clear of the record surface. However, this disadvantage has been overcome by the present invention, by allowin the stylus to remain in engagement with the recordand by'providing means for holding the stylus against all lateral movement during back-spacing operations, to cause its position laterally relative to the carriage to remain fixed during the back-spacing movement.

Heretofore, it has been proposed to overcome the disadvantageous noise above rewith regard to the carriage at each back-spac- I ferred to by allowing the stylus to remain in engagement with the record, drag behind the advancing carriage, and then to bring the stylus to a centralized posit-ion with regard to the carriage by a separate and supplemental operation. These suggestions, it was found, had serious objections. Of these, one was that the stylus would be centralized ing operation, irrespective of its position before the back-spacing operation took place. In some cases, it was found thatthe stylus would have lagged so far behind the centralized position, before the back-spacing operation was effected, that after back-spacing the carriage and then centralizing the stylus, the stylus would actually. have advanced several grooves, if indeed, ithad had its ultimate position changed in either direction relative to the record surface. Another one of the disadvantages of the proposed construction was that two operations were required-one to back space the carriage, and another, to centralize or readjust the stylus.

The disadvantages of the proposed constructions are, however, entirely overcome by the present invention, in which, by a single operation, the stylus is locked in any positionwhich it happens to be assuming and the carriage with the locked stylus is backspaced.

In the accompanying drawings, one particular embodiment of this invention is illustrated, and this embodiment has been found in practice to be satisfactory and probably would be preferred to others under contemplation.

In this form of the invention, the back spacing mechanism above described is! of usual form, such as disclosed in the patent to MacDonald, 1,030,740 of June 25, 1912, excepting, however, that the depression of the back-space key does not raise the stylus from the record-surface.

operating locking surface 43 formed on an arm 44 constituting an' integral part of the bracket 24 for the horizontal pivot 23 of the floating support 22. The clamping arm 40 is adapted, when operated, to move from the position shown in Fig. 2 to the position shown in Fig. 3 and in the latter position, produces sufficient friction between the cooperating clamping surfaces to prevent the movement of the floating-support 22.

The means for operating the clamping arm 40 comprises an arm 45 .pivotally mounted on the carriage frame 10 and having an operating part 46 adapted to engage a depending lug 47 on the clamping arm 40. The arm 45 is rocked when the back-space key is depressed by means of a spring 48 tonneeted to the operating end 46 and also con-- nected at the otherend to a arm 50. The'arm 50 is provided with a finger 51 normally located in a notch 52 in a sleeve .53 secured to the back-space key 37. The arm 50 is provided with a square hole adapted to receive the square-end of a shaft 54 to which the feed nut 32 is secured.

When the back-space key 37 is depressed, its sleeve 53 rocks, carrying with it the arm 50, so as to rock the shaft 54 and raise the feed nut 32 from engagement with the feed screw 33 to allow the back-spacing operation to be effected. At the same time, the arm 50, by reason of its movement, tensions the spring 48 and causes the arm 45 to rockrearwardly moving the clamping arm 40 into ear 49 on an engagement with its co-operating surface on the bracket 24 to lock the stylus against movement. The parts .are so constructed that the stylus is locked against lateral move-' the influence of the feed-nut spring 32 to 2 its normal position. In returning to normal :position, the arm 50 by means of an ear 51 engaging a project-ion on the arm 45 causes the arm 45 to also be returned to its normal inoperative position, that shown in Fig. 2.

Thus, it will be seen that the stylus is first clamped and then laterally moved bod- 'ily with the carriage during the back-spacing operation, and that after the back-spacing operation has been completed, the stylus will be in the same relative position with regard to the carriage as it assumed before.

the back-spacing operation was commenced.

joining the open-ends of the fork' 57.

This invention also provides means for facilitating operation of the back-space key.

This means, as shown in the drawings, comprises an auxiliary-key 55 havin a large operating surface and having a epending arm 56 which at its lower end is formed integral with a fork 57. The auxiliary-key 55 is mounted'on top of the regular key 37 with the part 55 resting on the operating part of the key 37 andwith the fork 57 straddling the key'37. It is attached to the'key 37 in this position by means of a bolt 58 mounted on the sound box for locking said carrier against lateral movement, relative to.

- the carriage and means for interengaging said locking members in any position of the stylus carrier with respect oi the carriage. 2. In combination, a carriage; a sound box secured to the carriage against movement therein; a stylus carrier mounted on the sound-box for lateral movement; and means mounted on the sound box for engaging the stylus carrier to hold the stylus carrier against said lateral movement relative to the carriage. 1

3. In combination, a sound box ;'a stylus carrier mounted on the sound box for lateral movement; and means mounted on the sound box for engaging the stylus carrier to hold the stylus carrier against said lateral movement relative to the carriage, said means being effective upon said stylus carrier in any position thereof with respect of the carriage. 4. In combination, a sound box ,xa carriage therefor; a stylus lever support'mounted m the sound box for lateral movement; a locking lever mounted on the sound box and having means adapted to engage the stylus lever support and manually operable means on the carriage for moving the locking lever from inactive to active position.

5. In combination, a carriage; a sound box on said carriage; a stylus-carrier support mounted on the sound box for pivotal movement; and controllable means mounted on said sound box for holding said support against such pivotal movement. i

6. In combination, acarriage; a sound box on sa1d carriage; a stylus-earner support mounted on the sound box for pivotal movement; a lever mounted on the sound box and capable of engaging the support in any of its positions with respect of the carriage to hold the support in any such position against such pivotal movement; and manually operable means to control the operation of said lever. 4

7. In combination, a carriage; a styluscarrier support mounted on the carriage for pivotal movement; a lever mounted on the carriage and capable of engaging the support in any of its positions with respect of the carriage to hold the support in any such position against such pivotal movement; means to engage the lever and cause the same to be operative; and a spiral spring op 1 eratively associated with said last mentioned means.

8." In combination, a carriage; a sound box; a stylus-carrier support pivotally mounted in said sound box a feed-nut mounted on th carriage; a back-space device mounted on carriage; means operategdl'by the back-space device for moving the fe -nut to inoperative position; and means on the sound box oper-' ated as a consequence of such movement of the feed-nut for holding the stylus-carrier support against pivotal movement while the feed-nut is in inoperative position.

9. In combination, a carriage; a sound box; a stylus-carrier support pivotally,

mounted in said sound box; a feed-nut mounted on the carriage; a back-space device mdunted on the carriage; means operated by the back-space device for moving the feednut to ino erative position; a lever on the sound box or holding the stylus-carrier support against ivotal movement; an arm-on the carriage or engaging said lever to operate it; and a spring tensloned by the movement of the feed-nut to inoperative position for resiliently operating said arm, which in turn operates the lever for holding the styluscarrier support against pivotal movement.

10. In combination, acarriage; a soundbox; a stylus-carrier support pivotally mounted on the sound-box; a back-space de-' vice mounted on the carriage; a lever mounted on the sound-box for holding the styluscarrier support against pivotal movement an arm for engaging said lever to operate it; and

a spring tensioned by the movement of the back-space device for resiliently operating said arm.

11. In combination, a carriage; a soundbox removably mounted in the carriage; a stylus-carrier sup ort pivotally mounted in a sound-box; a bac t .the'carria e; a, lever pivotally mounted on the soundox to be removable therewith for. holding the stylus carrier support against pivotal movement; and an arm mounted on -space device mounted on the carriage and Having sliding non-permanent engagement With said lever for operating said lever to cause the latter to hold the stylus-carrier support against pivotal movement.

12. The combination in a phonograph of a relative to the sound box across the grooves of a record supported adjacent the sound box, a stylus on said stylus carrier, means for moving the carriage along the record, and means carried by the sound boxfor holding the stylus carrier against movement relative to the sound box when the carriage is moved.

to slide the stylus along the record.

14. The combination in a phonograph of a carriage, a sound box on said carriage, a stylus carrier on said sound box and movable relative to the sound box, and means carried by the sound box for holding the stylus carr1er against movement relative to the sound box during back spacing movement of the carrier.

Signed at Bridgeport, in the county of Fair-field and State of Connecticut, this 5th day of January, 1925.

JOSEPH M. LUCARELLE. JOHN E. RENHOLDT.

CERTIFICATE OF CORRECTION;

ruin? No. 1,726,574.

Granted September 3, 1,929, to

- JOSEPH M. LUCARELLE ET AL.

It is hereby certified that error appears in the printed specification of the above numbered patent requiring correction as follows: Page 3, line 65, claim 5, after the Word"'movementY' and before the period insert "said means being effective on the stylus-carrier support in any position thereof withrespect of the carriage"; and that the said Letters Patent: should be read with this correction therein that the same may conform to the record of the case in the Patent Office.

Signed and sealed this 14th day of January, A. D. 1930.

I (Sell) I M. J. Moore, Acting Commissioner of Patents.

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