US766341A - Attachment for graphophones. - Google Patents

Description

PATENTED AUG. 2, 1904.

APPLICATION FILED JULY 27, 1903.

2 SHEETS-SHEET l.

NO MODEL.

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E. GILBERT.

ATTACHMENT FOR GRAPHOPHONBS.

APPLICATIUN FILED JULY 27, 1903.

2 SHEETS-SHEET 9.

NO MODEL.

Patentetl August 2, 1904.

lUNtTen STaTas PATENT @rames OF PORTLAND, ORIGON.

ATTACHMENT FOR GIRAPHOPHONES.

SPECIFICATION forming part of Letters Application tiled July 27, 1903.

Be it known that I, ELAM (ilauiu'r, a citizen The present invention comprises means` hereinafter claimed tor attachment to an or- 1 dinary graphophone, phonograph, or other cyliuder-record-reproducing machine bythe use of which the record may be repeated or replayed any number of times during the working of the machine without requiring an attendant to throw or place the reprmlucing means into operation w'hen the same has to bc restored to its starting position after having reproduced the record, the invention involving means whereby the reproducer mechanism is automatically raised or lifted clear of the record after having` traversed thc leng'th thereof, returned to its starting-point, and automatically lowered when returned to its normal position, in order to proceed immediately to move inward for the purpose of repeating the record.

1n order to comprehend the invention, ret'- y erence should be had tothe accompanying sheets of drawings, wherein Figure l is a front view in elevation` partly broken away, of an ordinary graphophone, illustrating the position of the slide-plate as raised to lower the reproducer mechanism or place the needle of the said reproducer onto l of the drawings` the reproducer-head being illustrated by dotted lines as restingl upon the supporting-arm which receives the same when lowered to place its needle onto the record for the repeating thereof. Fig. l is an enlarged detail cross-sectional view through the carrier for propelling the reproducer, the

Fig. 2 is a ver- Patent No. 766,341, dated August 2, 1904.

Serial No. 167,107. No modelo i sleeve which supports thecarrier, and the worm feed-shaft, said view illustrating the pawl for engaging with the worm feed-shaft. Fig. 5 is a broken top plan view of the mechanism contained in Fig. l of the drawings. Fig. t3 is a vertical cross-sectional end view taken online Fig. 5 of the drawings. illustrating the position of the parts when the reproducer mechanism is raised to lift its needle clear of the record; and Fig. T is a similar view taken on liuc l fr of Fig. of the drawings.

The numeral l designates the bed of an orl dinary "graphophone," and 2 the usual record-shaft, which shaft carries the mandrel 3 for the record i to be reproduced. This shaft driven from the operating mechanism (not shown) located within the case by means of the belt t3, which worlts over the belt-wheel T, attached to the outer end of the said shaft '2. To this shaft is also secured the pinion S, which pinion meshes with gear 9. This gear meshes with the gear t0, which in turn engages with the gear 10. engaging with the gear i0?, attached to the worm feed-shaft i0', Fig. 3 of the drawings. The worm feedshaftwvorlts within an inclosiug sleeve l1. securcdbetween the brackets 12.

Upon the fixed sleeve 1l is slidably mounted the traveler ll), which carries the reproducerarm it. To said arm is connected by a universal joint l5 the repro(lucer-head16. The traveler 13 is moved longitudinally by means of the pawl 1T, carried thereby, engaging with the threads of the worm feed-shaft, which pawl works through a longitudinal opening' 1S in the under face of the sleeve ll and is thrown into and out of engagement with the worm feed-shaft by means of the lever lf).

The pawl-act uating lever lil worlts within the slotted portion 2U of the slide-platell, which plate is supported by the brackets 22 .22, loosely mounted upon the sleeve l l. By reason ot' the loose connection between the brachets 22 and the sleeve 1l the plate 21 is not only permitted longitudinal play, but also vcrtical movement that is, it may be `raised and lowered by the hcreinafter-descriimd mechanism.

At the outer face of the bracket 22 is lo- IOO cated a shoulder 23, which shoulder works y againstthe incline 24 of the collar 24. rigidly secured to the outer end portion of the fixed sleeve 11.

To the collar 24 is hinged a depending cam 25, the projecting finger 25' of which when the said cam is in its normal position lies immediately beneath the fixed sleeve 11. This cam is engaged by a pin or stud 26, secured to and projecting from the outer face of the bracket 22, the purpose of the cam being to hold the slide-plate 21 in its raised position until the said plate is moved inward to release the pin or stud 26 from its engagement therewith. The moment the pin or stud 26 isreleased from engagement with the cam 25 the plate 21 is lowered by the tension of the spring 27, which spring forms connection between the bed l of the machine and the head-block 27', secured to the projecting portion 28 of the bracket 22. To this block 27 is connected one end of a supporting-plate 28', the opposite end of which is secured to an upright 282, projecting upwardljT from the bed 1. The plate 28 has attached thereto an inwardly-extending arm 29, which when the traveler 13 is returned to its starting position receives and upholds the reproducer-head 16 when thrown downward by the uplifting of the plate 21. By this means the reproducingneedle 16 is held in line with the surface of the record 4, so as to enter thereon as the head is moved inward by the action of the traveler 13, being thus prevented from being damaged by impinging against the end edge of the record. sary inasmuch as the records vary as to inside diameter', which variation of diameter prevents the records slipping onto the mandrel the proper distance#. e., some records will slip farther onto the mandrel than others. .Were it not for this supporting-arm the head of the reproducer would drop or fall too low in case of a record not going onto the mandrel the proper distance or far enough for the needle of the head to bear onto the surface of lthe record when the head is lowered, the result being in such case that as the reproducerhead is moved inward for the reproduction of the record the needle will be brought against the edge of the record and the strain or pressure thereon will tend to break the needle or stop the working of the machine. Vith the employment of the supporting-arm such occurrence is prevented, as the head is held in proper position for the needle to move onto the surface of the record as the reproducerhead is moved inward. To lessen the impact blow of the reproducer-head onto the arm 29, there is secured to the inner end portion of the said arm a rubber cushion or pad 29.

The plate 28 has hinged thereto a lever 30, the depending tail portion 30 of which is engaged at times by a stud 31, inwardly projecting from the inner face of a disk 32, se-

This supporting-arm is necesorder to lift the plate 21 through its connection therewith. As thus lifted the arms 22 22 turn upon the sleeve 11, causing' the shoulder 23 of bracket 22 by riding upon the inclined face 24 of the fixed collar 24 to gradually force the slide-plate 21 inward a slight distance sufficient to enable the tail of the lever 30 to clear the studor pin 31.

lWhen the slide-plate 21 is in its raised position, the pin or stud 26 is engaged by and the plate 21 upheld by the finger 25 of the cam 25 bearing upon theupper face thereof, or, in other words, the said finger 25' rests upon the said pin or stud 26 and holds the plate 21 locked against downward movement.

Inasmuch as portions of the records to be reproduced vary in length, the terminal point of the wave-lines is not the same with different records. The purpose is to restore the reproducermechanism to its starting-point the moment the record has been played in full. To accomplish this, means must be provided to throw into operation Vthe return mechan' ism as the record playing finishes. Asimple device for doing this comprises a gage-block 32, adjustably secured to the plate 21. From this block projects a gage-finger 32, which finger enables the operator to so regulate the position of the gage-block as to prevent the traveler 13 moving beyond the point required. The gage-block is moved until the finger 32 is brought to the stopping or terminal point of the record, when. the said gage-block is secured by the set-screw 323 to the slide-plate.

During the operation of the machine the reproducer-head is propelled over the record by the movement of the traveler 13, which is driven inward by its pawl 17 engaging with the worm feed-'shaft 10. As the reproducer mechanism reaches the end of its travel the lever 19 bears against in the present case the gage-block 32 and gradually forces the plate 21 inward to remove the pin or stud 26 from off the cam-finger 25'. The moment the said pin or stud is disengaged from the cam-finger 25 the tension of the spring 27 draws upon the arm 22 and throws the plate 21 downward, causing the upper portion of the slotted plate 21 to act upon thelever 19 to move IOO same vtherewith to release the pawl 17 from ISO extension 33' of the traveler 13 bv means of tion 30/ ma;v be in the path of the stud 31 of the As thus positioned the said stud 31of the rotating disk 32 engages the tail 30/ of the disk 32.

lever 30 and raises same to lift or raise the plate 21, which as lifted is movedslightly inward to permit of the depending` tail 30 clearing the lith the return movestud or pin 31 by the shoulder Q3 working' i ag'ainst the inclined face 24 of the collar 24J. During' this upward movement of the plate 91 thelower portion thereof bears against the under face of the lever 19 to actu ate the same so as to place the pawl 1T into engagement with the worm feed-shaft. As the arm 2Q turns with the raising' of the plate 21 the pin or stud 26 bears upon the cam-linger in order to throw the same in order that its linger will clear the pin or stud 26. As the said stud or pin passes below the tinger Q5 the cam Q5 swings back into place byg'ravity, its tinger moving above the pin or stud 26 in order to hold the plate 21 locked in its raised position. lit will be understood that as the plate Q1 is lifted the reproducer-head 16 is lowered onto the arm 29, which holds the same so as to maintain its needle clear of the record until the inward movement of the traveler 13 removes the reproducer-head from olil the said arm.

The chain or cord 3st works over a pulle)Y 34. working in bearing' of an arm or bracket B42, hinged to the bed 1. l'Vhen the machine is not in use, the arm or bracket 312 is swung upward so as to bc out of the way, and the weight 33 placed upon the bed 1.

The slide-plate and its coacting' parts for raising' and lowering the reproducer-head, returning' the traveler to its starting-point, and shifting' the said slide-plate are readily attached to any of the machines now in usc and ma)v be placed thereon at a nominal expense.

Having thus described the invention, what is claimed as new, and desired to be protected by Letters Patent, is

1. The combination with the worm feedshaft, a sleeve within which same works, means for driving the said shaft, a traveler longitudinally movable upon the sleeve, a pawl earried b v the traveler which engages with the feed-shaft, a vertically-movable plate slidable upon the sleeve, means for automaticall)Y lowering the plate when the traveler has moved its full inward distance, connection between the slide-plate and the travelers pawl for actuating the same with the vertical movement of the slide-plate, means for returning' the traveler to its starting-point with the lower- Y ing of the slide-plate, and devices actuated by the drive means for automatically lifting the slide-plate with the return of the traveler in order to cause the travelei"s pawl to engag'e with the worm feed-shaft and holding the said plate in its raised position until released by the traveler at the completion of its inward movement.

Q. In a machine of the described class, the combination with the long'itudinally-movable traveler, means for driving the same, of the reproducer mechanism carried by the traveler, of a device for regulating' the inward movement ot' the traveler, means for automatieall)v raising' the reproducer mechanism when the traveler completes its inward movementk and restoring' the traveler and said mechanism to its starting position, devices actuated by the driving means for automatieallgv lowering' the reproducer mechanism upon the completion of the travelers return movement and holding' the same so lowered until the said traveler com plctes its next inward movement, and an arm or receiving device onto which the head of the reproducer mechanism is received when lowered.

3. .1n a machine of the described character, the combination with the reproducer mechanism, of means for raising and lowering' the Y said mechanism for the described purpose, and means for receiving the reproducer-head when lowered and supporting the same in line for its needle to enter onto the surface of the record with the inward movement of the reproducer mechanism.

In witness whereof I have hereunto set my hand.

ELAM GILBER' 'itnesscs:

N. A. Amine, l). B. Ricinxizns.

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