US1415525A - Control means for sound-reproducing machines - Google Patents

Description

F. CHENEY. CONTROL MEANSFORSOUND REPRODUCINAG MACHINES. APPLICATION FILED IIQII.I4, 1911.

1,415,525, Y Patented May 9, 1.922.

AT l

FOREST CHENEY, OFOHIOAGO, ILLINOIS, AssIGNOB. 'ro lCHENEY TALKING iviACIIINII COMPANY, or CHICAGO, ILLINOIS, A OONPORATIONOF ILLINOIs;

CONTROL MEANS non SOUND-REPROIJCING-MACHINES.

To all 'whom z't may cam/cera.

Be it known that 'I, Fonnsr CHENEY, a lcitizen of the United-"States, and resident of Chicago, inthe county of kCool; and State Vof Illinois, have invented certain new and useful Improvements in Control Means'. for VSound-Reproducing Machines, of which the renewing is a specification This invention relates" tov sound repro-` du'cing'y machines, and' more v-particu:larly to -control' means therefer. Y ,i

` v@ne of-theobjects' of the invention is to 'control the operation of asoundfreprodueing machine-in an improved manner. i v ',An'othe'r objectof theinvention V1s to y1mpio've means for automatically stopping the Operation 'ofl a sound :reproducing machine.`

Anotherrobject'isto provide control means for sound reproducing machines adapted to meetthevarious requirements for successful use. f i

c 'Generally speaking, these and Y other 'objects are accomplished by providing ina 'sound reproducing machine, vthecombina'- tion of a turn table, a motor for actuating siaid" turn table, and means 'fo'r interrupting the actuating `medium for said motor for causing theturn table to stop.

' Theinvention is illustrated on vthe accompanying sheetof drawings in which, 'L

Figure 1 isa side elevation, partly in s ection, of a portion of'the sound reproducing machine embodying my invention; l

Figure 2 is a sectional view't'aken in the vplanefof line Q-Qof yFigure' ii-Shpwng,

among, other things, the motor circuit com- 'p'lete for driving theturn table; e

L'Fi'gur'e 3 is a fragmentary sectional view f 'of thesam'e showing the'motor circuit inten 'Yitwill benoted'th'at I have show'n a tone arm''and a Vturn table `6 of a `sound reproducing machine, The tone arm 5 is `provided with a downwardly extending vcylinl`dricalportion 7 'adapted to rotate-within the Application flied November 14,l 1917. serial No. 201,921.

'or A lever 26.

tubular portion 8 'attached to; the base y95.61?

the machine'. Around this tubularj portion specification of Letters Patent. "Patentf-dy May 8 is rotatably arranged asleeye[10whicliis i connected to the cylindrical-portion? ofthe `tone arm by-pinsfll and 12 sov that v'the sleeve turns with the tone arm.,l Slotsare formed 1n the tubular portion 8 to allowfthe pins to move withinthe desired yarcof movementl of the tonearin. To this 4'sleeve 110 'ifsfconnected l'meansof the pin 11,an arm 13,:whichi1'1 the `form of construction illustrated, consists "of a thin` metal stamping; Thisarm is prol vided Wlth a curved portion 14 of the same curvature 1- as the sleeve yloand .alsofaf ylateral pro] ection 15v adapted tofe'ngage another, por-4 tionV ofthe sleeve 10 in order to prevent lateral movement ofthe arm 131ielatively to thel sleeve 10. Verticaly movement of thev arm is"p1 evented by the inwardlyturned projections 16 which engage the' upper edge of the sleevev 10. The outer/end 17 of this yechanism as will be herein'after(described.` The stop v"mechanismf includes Qa `base4 on which is arranged a'fmemberrpitotal'ly mounted on the base, 4 at`1`9.' andjc'ar'rying y the movable contact't20 of ai' hfaving 4 a pair of 'stationary switch:` ContactV members 2Qfi carried byy a block ofjjinsulation secured to the base 4. A sp'rin'g 21 ten-dsl tolt'urn'the` member 18 in 1a manner :to carry the movable- 'switch "contact 2O out ofeng'agement with the stationary Contact members QO-tobreak l the electric circuit 22 'ofthe propellingIngo-,v`

torf22a suitably geared tothe yturn table,

Vthe switch v'contacts being in engagement Vwith each other as shown in Figure/ 2, for. completing the motor circultfwhereuponthe motor( drives the turn table andthe switch contacts being out of 4engagement with each (other, as vshown 'in vFigure 3 to `break` the vmotor l'circuit for causing tlieturn table 6 to stop. A leverv 37 having a kiiurled` knob l38 is' connectedl to the switclrfcarrying mem b er 18 for movingy the latter manuallyvr .against *the tension of vthe spr-ing 21. The movable switch member 2Q after movement by the' Vlever to ,complete themotor circuit heldin suclrposition bymeans ofgalatch l 23,'the shoulder 24 of which 'engagesa'shoul-f der 25, ofthe contact carrying member' 18.

The latch is operated by means-cfa trigger A The eadgof the; trigger 2e 16e-say @gages a s161539 `in' the @ad of the latch 23 so that the trigger and latch may move slightly independent of each other as a result of the lost motion connection. The lost motion connection between the trigger 26 and latch 23, though slight, permits the machine to run a little longer than the normal stop setting would seem to indicate. In this way there is no chance for the machine to vstop automatically until the record is completely played. Movement ofthe trig-y ger and latch away from the contact carrying member 18 is limited by a stop 40, as shown in Figure 3.

As stated before, in Figure 2 the various parts are shown in their relative positions with the switch contacts 20 and 2Oa in engagement with each other to complete the motor circuit for driving the turn table, and in Figure 3 parts are in such relative positions that the switch contacts 20 and 20a are out ofengagement with each other to interrupt the motor circuit. In this latter position the end of the latch engages a second projection v27 on the contact carrying member 18, which projections prevent the spring 21 from functioning to cause movement of the member 18 to close the motor circuit. The trigger .26 is pivoted at 28 about which point a lever 29 also turns. The lever 29 is provided at its outer end with a knurled knob 41 adapted to be engaged by the end 17 of the arm 13 as the latter is moved by the tone arm toward the left, as shown in Figures 2 and 3. The trigger 26 and lever 29 are connected frictionally so that their relative positions may be adjusted. For this purpose the trigger is provided withl a right-angle extension 30 carryingat its end a .bolt,31. The lever 29 is also provided with an extension 32 overlying the extension30 and having a segmental slot 33 formed in its end portion. The bolt 31 passes through this slot and as the head 34 of this bolt is retracted by a spring 35 surrounding the bolt 31, the extensions 30 and 31 are held in frictional engagement with each other, as will be evident from Figure 1. This segmental slot 33 allows of adjustment between the lever 29 and the trigger 26. The tension of the spring may be varied as desired by means of the nut 45 on the bolt 31. The trigger 26 is provided with a hooked projection 36 adapted to engage one end of the spring 21. This spring tends to hold the trigger and thereby the latch 23 in engagement with the contact carrying member 18. It will be observed that the spring 21 actuates both the contact carrying member 18 and also the trigger 26 and latch 23.

1n the operation of the device, the lever 2 9 is rst moved to the left, as viewed in Figures 2 and 3,' an amount such that the tone arm may be moved to bring the needle into engagement with the last groove or substantially the last groove of the record without causing the arm 13 to engage the lever 29. The tone arm then is moved to the extent that the needle engages with the lastl groove. The lever 29 is then moved to the right until it engages the arm 13 thereby leaving a. slight space between the trigger 26 and the outer wall of the slot 39 to prevent prematurestopping of the machine. As the move ment of the trigger 26 is limited by the stop 4:0 the arm 29 is moved relatively to the trigger to allow the tone arm 5 and arm 13 to move for setting the machine for proper stopping thereof. The tone arm is then moved to bring the'needle in engagement with the groove at the beginning ot the .4

record. n

To start the turn table rotating the lever 37 is moved to the left, as shown in Figures 2 and 3. As soon as the shoulder 25 or" the member 18 is moved beyond the shoulder 24: v

of the latch the latter is moved upwardly by the action of the spring 21 on the trigger 26 so the movable contact 2O of the' switch is moved into engagement with the stationary contacts 2Oa to complete the motor circuit. Thismovement of the latch and trigger causes a slight movement of ythe lever 29 to the right. When the needle has reached the end of the record, the end 17 of the arm 13 contacts with the-knob 41 of the 'arm 29 and gradually moves the latter and trigger 26 to the lei't without imparting any motion to the latch 23 until the safety lost motion is taken up and then the latch is tripped and the movable electric contact 20 snappedout of engagement with the stationary contacts 20a to interrupt the motor circuit thereby causing the turn table to cease rotating. Not only is the circuit of the electric motor interrupted to stop the rotation of the turn 'f table, but also the turn table is stopped automatically in a manner such that the record will be completely played before themachine is stopped.

It is apparent that there may be variousV 1 modifications of the invention herein particularly shown and described, and it is my intention to cover all such modications which do not involve a departure fromv the spirit and scope of the invention as set forth in the following claims.

I claim:

1. In a sound reproducing machine, in combination, a motor for actuating a record,

a switch in the motor circuit, a latch orxl holding said switch in closed position, tripping mechanism for operating said latch adjustable with respect to said latch to time the occurrence of the tripping action, Vsaid tripping mechanism including two relatively7 movable members, one of which members engages said latch, a projection secured to the tone' arm and arranged to engage the other member of said tripping members under certain conditions,land a spring for actuating the tripping` mechanism to open said switch when one member of said tripping `mechanism is engaged by said projection.

2. yIn a sound reproducing machine, in combination, a motor for actuating a record,

- a switch in the motor circuit, a latch for rmovable members, means for regulating theV v relative movement therebetween, one of said y members being adapted to engage'said latch,

a -projection secured `to thetone arm `and arranged vto engage the other member of said tripping member under certain conditions, and a spring for-actuating the tripping mechanism to open said switch when one member of said tripping mechanism is engaged by said projection.

Signed at Chicago, Illinois, this lstday i of October, A. D. 1917.

Witnesses: v

l EDWIN P.v GRUBBY,y

E, R. HICKMAN.

- FOREST CHENEY. i c.

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