US1505307A - Talking machine - Google Patents

Description

Aug. 19, 1924. 1,505,307 J. T. BENNETT TALKING MACHINE Filed July 5, 1922 4 Sheets-Sheet i mm .il

INVENTOR J. T. BENNETT,

- By his A't torne s Aug. 19, 1924. 1,505,307

.1. BENNETT I I TALKING MACHIN E- r'iled July 1922 4 Shets-Sheet 2 INVENTQR J T. BENNETT,

By hmW -neys,

Aug. 19, 1924. 1,505,307

J. 'r.. BENNETT TALKING MACHINE Filed July 5, 1922- 4 Sheets-Sheet 5 INVENTOR: J. T. BENNETT,

By his Attorneys,

Aug. 19, 1924.

J. T. BENNETT TALKING MACHINE Filed July 5, 1922 4 Sheets-Sheet 4 .mvmwom J. T. BENNETT,

; By his AW,

Patented A 19, 1924.

UNITED STATES :mcx AYLOR. BENNETT, or GLASGOW, SCOTLAND.

- TALKING MAGHINE Application meauul 5,

To all whom it may concem:

Be itknown that I, JACK TAYLOR BEN- NETT, a subject of the King of Great Britain, residing at 25. Queensborough Gardens, Glasgow, Scotland, have invented new and usefullmprovements in Talking Machines,

' of which the following is a specification.

This invention relates to improved means for enabling a number of records to be played automatically in succession on a talking machine.

The object of my invention is to provide improved means whereby the following operations take place automatically At the end of a record the sound box and stylus are raised and the tone arm carrying the sound box is moved clear of the record to allow of its removal and replacement by a fresh record.

The tone arm is then moved back so tha the st lus is over the commencement of the recor and the sound box is lowered to allow the stylus to rest upon the record. At

the end of the record the operations are repeated.

In carrying out my invention the necesr sary movements of the tone arm and sound box (except when a record is being played.) are all efiected by meansof a lever which is pivoted to the tone arm, one arm of the said lever resting directly upon a cam driven by an actuating shaft which'is automatically driven one revolution at the end of a record by the gramophone or like motor or by a se arate motor.

referably each record is provided-with a groove or ridge leadin from the end of the record groove to a sma l-circulargroove coaxial with the centre of the record; by this means the stylus and with it the sound box and tone arm are carried at the end of the record towards its centre and a clutch connecting the actuating shaft previously menvertically one on either side of the turn-' table, each rod being connected preferably by a chain to the actuatin shaft in such a manner that when the sha revolution the rods are also rotated one I revolution. On each rod is a pin or cam the rods are rotated one revolution.

is rotated one 1922. Serial No. 572,522.

whichraises the record clear of and away from the turntable pin.

The records to be pla ed aresupported on a spiral thread provi ed on the vertical rods, a record coming clear of the thread and dropping on to the turntable each time The rods may conveniently be connected by a bar having a centering rod which passes through the central hole in each record.

During the whole of these operations the turntable may continue to rotate.

If and when it is desired ,to use the gramophone in the ordinary manner means may be provided to prevent the'cam and maga zine rodsfrom being driven.

In the accompanyin drawings which illustrate my invention igure 1 is an underside vi ew, the platform having been removed from lts case and turned over, Fi re 2 is an elevation, Figure 3 is a plan,

7 1,505,307 PATENT OFFICE.

igure 4 detail perspective views, and Figures 7 to 11 are views showing the cam in difi'erent positions.

1 is a platform on which the mechanism to be described ismounted. 2 is a tone arm on which a bell crank lever 3 is pivotally mounted in a bearing 4, 5 is a sound box which is carried by the usual goose neck 6 and rests upon. one arm of the lever 3. 7 is a turntable driven by a motorindicated at 8 (Figure 4). 9 is the main "drivin wheel of a separate motor. The secon motor is provided with a brake drum or friction disk 10 by means of which the motor may bestopped by an arm 11 ivoted at 12 to a bracket 13 fixed to the plat em, and actuated by a sprin 14. The main driving wheel 9 gears wit a pinion 15 provided with a bevel wheel .16 which gears with a bevel wheel 17 on a shaft 18. Fast with the shaft 18 is a cam 19 fast with which is a disk 20 havingin it a slot 21. The end of the sprin actuated arm 11 remote from the brake 10 1s bent over so as to be adapted to enter the slot 21 in which position the arm is moved by the spring 14 to press upon'the brake 10 and prevent the rotation-of the driving wheel 9. That arm of the bell crank lever 3 which is remote from the sound box 5 is controlled by the cam 19 and passes through a slot 22 in the platform 1. The'arm is also provided with a projection 23 adapted whenthe tone arm is swung towards the centre of the turntable at the end 1 of the vrecord to engage a cam 24 on the spring arm 11 in such a manner as to depress the spring arm out of engagement with the-slot 21.

In operation at the commencement of a record the lever 3'is in the position shown in Figure 7. As the piece is played the tone arm 2 travels in; the ordinary manner towards the centre of the turntable carrying with it the lever 3 until the lever- 3 has reached the position shown in Figure 8. In this position the }projection 23 on the'lever 3 comes against t e cam 24, lowers the end of the arm 11 out of the slot 21 in the disc 20 and so moves the arm 11 away from the brake 10 thus permitting the motor to start on the shaft 18 is a disc 39v having thereon a pin 40 which can be moved into or out of engagement with a slot 41 in a disc 42 fast with the sleeve 37 on, which the bevel wheel 36 is mounted by clutch forks 43 carried by a spindle 44 and actuated by a hand lever 15.

In operation, if the pin 40 is in engagement with the slot 41, the rods 27 are rotated one revolution when the cam 19 is rotated one revolution, and therecords are thereby gradually lowered on the threads28. The record which has just been played is removed from the turntable 7 by the earns 30 when the tone arm 2 and sound box 5 are clear of the said record. The lowest record comes clear of the end of the thread 28 and its main driving wheel 9 driving the shaft falls on to the buffers 29. .This record is 18 through the pinion 15 and bevelled wheelfl 16, 17. As the shaft 18 rotates the cam 19' thereon tilts the lever 3 and on further rotation of the cam a spiral projection thereon moves the lever 3 in an axial direction as shown in Figure 9. Further rotation of the cam 19 moves and retains the lever 3 in the position shown in Figure 10 in which position the tone arm and sound box are clear of the record and -ti irntable 7. A record is then removed and replaced by a fresh record by mechanism which will be described hereafter. As soon as the record has been'replaced by a fresh one the lever 3 is brought by a spiral projection 26 on the cam 19 to the positionshown in Figure 11 bringing the tone arm 2 and sound box'5 with it to a position in which the stylus of the sound box 5 is above the commencement of the fresh record.- Further rotation of the cam 19 allows the-bell crank lever to tilt and lower the stylus on to the record.

The cam 19 has now returned to the position shown in Figure 7, that is, the cam has been rotated through one revolution and the end of the s ring arm- 11 is once more in line with'an rises into the slot 21in the disc 20,

thus allowin the spring arm 11 to press upon the bra e 10 and stop. the motor.

The magazine for supporting the records comprises a pair of rods 27 arranged on either side of the turntable 7. has on it a spiral projection or thread 28 on which therecords are supported, and is provided with a preferably padded buffer 29 and with a cam 30 which is adapted to pass underneath a record on the turntable 7 and lift itfclear of the central pin with which the turntable is provided, and deliver it to a roller 31. Each'rod 27 is provided at its lower end with a sprocket wheel 32 which .is connected. by a chain 33 to a sprocket wheel 34 which has fast'on it a bevelwheel 35 in mesh with a bevel wheel 36 fast with a sleeve 37 which is rotatably mounted on the shaft 18. The chain 33 passes round pulleys in order to drivethetwo rods 27 in opposite directions; .Slidably mounted Each rod 27 then dropped on to the turntable 7 when the cut away portion of the buffers 29 come opposite ,to the record andthe tone arm and sound box are moved into position as previously described.

If it is desired that a record should be repeated the pin 40 is moved out of engagement with the slot 41 by the hand lever 45 in which case when the record is finished the cam 19'raises the sound box 5 and moves the tone arm 2 clear of the record, back again so that the stylus of the sound box 5 is above the be inning of the record and lowers the sound x into playing position again.

What I claim is a 1. In a talking machine adapted to. play automatically a number of records in succession, the combination of a turntable, means for'rotating the turntable, a tone arm,

a'so'i'lnd box plvotally mounted thereon, a

it positivel to a position clear of the record and turnta le, then hold itstationary during the changing of a record, and finally drcp it into posltion to engage the new recor in starting position,

2. In a talking machine adapted to play automatically a number of records in succession, the combination of a; turntable, means for rotating theturntable, a tone arm, a sound box pivotally mounted thereon, a single lever pivoted to the tone arm, a cam,

and means adapted to rotate the cam at the end of a record, one end of the lever supporting the sound box, the lever enga ing said cam and being positively moved t ereby to first raise the sound box .andthen move the tone arm to starting position.

3. In a talking machine adapted to play automatically a number of records in sue cession, the J combination of a turntable, means for rotating. the turntable, a tone arm,

and the other end of a sound box pivotally mounted thereon, a single lever pivoted to the tone arm, a cam, means adapted to rotate the cam at the end of a record, and means carried by the lever for initiatin the operation of said means, one 'end of t e lever supporting the sound box, and the other end of the lever e aging said cam and being positively moved t ereby to first raise the sound box and then move the tone arm to startin position;

4. In a talking mac ine adapted to play automatically a number of records in succession, the combination of a turntable, means for rotating the turntable, a tone arm, a sound boxpivotally mounted thereon, a

single lever pivoted to the tone arm, a' cam,

means ada tedto rotate the cam at the end of a recor and means carried by the lever for initiatin the operation of said means, one end of t e lever supporting the sound box and the other end engaging said cam,

said cam formed to first ra1se the sound box through said lever, then move it positively to a position clear of the record and turntable, then hold it stationary during the changing of a record, and finally dro it into position to engage the new record in starting sition.

In test1mony that I claim the foregoing as my invention I have signed my name this 23rd day of June, 1922.

J AGK TAYLOR BENNETT.

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