US1249251A - Phonograph. - Google Patents

Description

M. W. TURNQUIST.I

PHoNoGRAPH.

APPLICATION FILED FEB.26. 1917",

Lmgm; Patented De.4,1917.

2 SHEETS-SHEET I.

M. w. TURNQUIST.

PHONOGRAPH. I

APPLICATION FILED FEB.26| 191?.

Lgm., Patena Dee. 4,1917.

2 SHEETS-SHEET 2.

I l-r In Imm III

si III MAGNUS W. TUBNQUIST, 0F CHICAGO, ILLINOIS.

PHONOGBAPH. n

Lawaai.

Speoication of Letters Patent.

Patented Dec. 4:, 191'?.

Application mea February "2c, 1917. serial No. 150,879;

To all whom z'tmay concern: l

Be it known that 1 MAGNUS W. TURN- QUIsT, a citizen of the United States, and a resident of Chicago, county of Cook, and State of Illinois, have invented certain new and useful Improvements in Phonographs, of which the following is declared to be a full, clear, and exact description.

This invention relates to phonographs, and its principal object is to provide improved means for returning the tone arm and therewith the reproducer andv needle to their starting place, whereby the musical selection or other sound produced may be repeated automatically without any further attention on the part of the attendant. Another object is to provide a simple, comparatively cheap, ecient and practical mechanism for accomplishing this result. Another object is to provide a repeating mechanism for phonographs, actuated by the turntable or dlsk which supports the record. Another object is to produce a repeating mechanism for phonographs, having adjustment means to accommodate various sizes of record disks. With these and other objects and advantages in View, this invention consists in the several novel features hereinafter fully set forth and more particularly defined in the appended claims.

The invention is clearly illustrated in the drawings accompanying this specification, in which:

Figure 1, is a plan of a fragment of a phonograph, showing a simple embodiment of the present inventionepplied thereto; Fig. 2, is a view partly in side elevat-ion and artly in vertical section of the parts seen 1n Fig. 1, the line of section being indicated at 2 2 in Fig. 1; Fig. 3, is a view partly in plan and partly in horizontal section, the line of section being taken at 3 3 in Fig. 2; Fig. 4, is a detail plan of a fragment of a certain oscillatory and reciprocatory frame; Fig. 5, is a detail vertical section taken on the line 5 5 of Fig. 3; Fig. 6, is a detail, vertical section taken on the line 6 6 of Fig. 3; and Fig. 7, is a detail end view of certain anti-friction bearing rollers.

Referring to said drawings, the reference character A, designates the top of a phonograph cabinet or case of ordinary construction, in which is contained the usual motor (a fragment of which is'shown atB), for

operating the phonograph mechanism. In

accordance with the usual and common prac--A tice, said motor drives a spindle or shaft 7, to which is secured a sleeve 8, that carries the turntable 9, the upper face of the turntable is provided with a felt cover 10, and the usual spindle 11, projects up from the table at its axis of rotation.

The tone arm 13, is rotatively mounted on a vertical axis above the ltop A, and overhangs the turntable. It is provided with any of the ordinary and well known reproducers 14, which is hingedly connected to the tone arm on a horizontal axis as at 15, and the stylus, or needle, 16, is employed in connection with the reproducer for traveling in the groove of the record disk 17. The horn or sound box 181, may be connected with the tone arm 13, in any of the well known methods, and the parts thus described may be of any of the common phonographs employing a disk record. It is understood that 1n the operation of the phonograph, the turntable and record disk rotate in the direction indicated by the arrow a, in Fig. 1, and that the needle, reproducer and tone arm are carried in the direction indicated by the arrow b, by the sidewise action of the walls of the groove of the record upon the needle.

Secured upon the vertical portion 18, of the tone arm, is a clip 19, which encircles said portion 18, and is fastenedthereon as for instance by means of a screw 20, .which extends through outturned ears formed on the clip. On the opposite side of the clip are two ears 21, between which is secured a block 22, which block is free to turn upon a horizontal axis. Said block may be secured to the ears 21, by screws which permit of the rotation ofthe block upon the ears of theclip. Fixedly secured to said blockV 22, is a frame shifting arm 23, which extends underneath. the turntable, and also has an upwardly bent portion 24, that extends through the block 22, and terminates in an arm 25, that projects underneath thereproducer, as clearly illustrated in Figs. 1, and 2; said arm acting to lift the reproducer and needle during the intervals that the tone arm is returned to its starting position. Upon the frame shifting` arm 23, is slidably mounted a roller 26, which runs upon a track 27, of an oscillatory and reciprocatory frame C, which is provided upon its ends with shafts or spindles 28, 29, that are rotatively and Slidably mounted in bearings here shown as comprising upperfand lower rollers 30. At a point adjacent the turntable spindle 7, the frame C, is provided with an arm 31, lying parallel with the track 27, and said track 27, and arm 31, are provided with devices for engaging the threads 32, of a worm or screw 32, which is secured to the sleeve 8. Said devices are here shown in the form of bevel edged rollers 33, 34, journaled upon pins secured to said track 27, and arm 31, and they are slightly offset with respect to each other so that when one roller is brought into engagement with the threads ot the worm or screw, the other one is just leaving the threads of the screw, as will appear more fully later on.

The frame shifting arm 23, is arranged to shift the oscillatory and reciprocatory frame C, whenever the needle of the reproducer approaches the ends of the limits of its travel in either direction, the purpose of which is to bring one or the other of the rollers 33, 34, into engagement with the threads of the worm to thereby Irock the frame C, in either direction to raise or lower the reproducer, and therewith the needle. The mechanism illustrated will now be described.

A lever 35, is fulcrumed to a support at 36, which support may be the top A, of the cabinet, and said lever 35, is pivotally connected to the oscillatory and reciprocatory frame, as at 37. A link 38, connects the lever 35, with the frame shifting arm 23. Said arm 23, is provided with an ear 39, through which said link 38, passes, and collars 40, 41, are adjustably secured upon said link 38, one upon each side of the ear 39. Said collars are so located upon the link 38, that when the needle approaches either limit of its travel, the ear 39, strikes one of the collars 40, 4l, depending upon which direction the tone arm is moving, thereby moving the link 38, endwise, and swinging the lever 35, upon its fulcrum, and shiftin the oscillatory and recip'rocatory frame C, 1n an endwise direction. Assumin that the turntable and record are rotating 1n the direction.

of the arrow a, in Fig. 1, the needle, reproducer and tone arm are moving in the direction of the arrow b, and the frame shifting arm 23, is moving in the direction indicated by the arrow b, in Fig. 3, from the position shown in full lines to that shown in dotted lines in said Fig. 3, the track 27, of the oscillatory and reciprocatory frame will have been swung down previously to this time, and the arm 31, will have been swung upward to a position where the roller 33, will enter the groove between the threads of the worm 32a, at or near the upper end o'f the worm. When the ear 39, engages the collar 40, the continued movement of the frame shifting arm in the direction of the arrow b, in Fig. 3, will effect an endwise movement of the link 38, in the direction of the arrow, thereby swinging the lever 35, shifting the oscillatory and reciprocatory frame from the position shown in full lines in Fig. 2, toward the position indicated in dotted lines in said figure.

Rotatively mounted upon the track 27, and the arm 31, and fixed against 'endwise movement thereon, are shift plates 42, 43, which have shoulders 44, lying in the path of a stud or other projection 45, secured to and projecting up from the worm 32, Normally said shoulders 44, are out of the path of the projection 45, and when overlying said projection, are held out of the path oi said projection by pins 46, that extend upward from the top A, of the cabinet (see Fig. (3). Whenever the oscillatory andreciprocatory frame is moved to bring a roller 33, or 34, toward the worm, the plate 42, or 43, (that is carried by the track 27, or arm 31, which is in raised position,) is being supported by a pin 47, to hold the shoulder 44,- above the rotating projection 45, until the roller has almost reached the worm or screw, at which time the plate drops ofi' the pin 47, and

` lodges upon the top of the worm or screw in position to be struck by the projection, whereupon the shoulder is struck by the projection and the frame is quickly shifted to bring the roller into engagement with the threads of the worm. Said worm or screw is a lefthand worm, and rotation of the screw inthe direction of the arrow a, in Fig. 1, will cause the roller, when in engagement therewith to travel downward, thereby swinging the frame C, from one of its inclined positions to its other inclined position. Upon the outer end of the frame shifting arm 23, is journaled a friction roller 48, which is set at an angle to the arm 23, as shown, and in the return movement of the arm, said friction roller is raised into contact with the underside of the turntable 9, to effect its travel toward the outer edge thereof.

In the operation of the device, the motor is started, and the turntable and record disk thereon are rotated in the direction ,of the arrow a, in Fig. 1. The tone arm is first manually moved to its extreme operative position at the right, as viewed in Fig. l, and the reproducer is lowered to bring the needle into the outer end of the spiral groove of the record disk. The tone arm is thereupon slowly moved in the direction of the arrow b, in Fig. l, as is usual,and the frame shifting arm 23, by reason of its connection with the tone arm, is carried along therewith toward the left. It is to be understood that during movement of the tone arm and frame shifting arm toward the left, the oscillatory and reciprocatory frame C, occupies the inclined position seen in Fig. 5, that is to say the track portion 27, is at its lowermost position and the arm 31, is at its uppermost position; the frame is also at the limit of 1ts stroke toward the right as viewed in Fig.

3, the 'roller 34, is under the lowermost thread of the worm andthe roller 33, is 5 located at the right of the worm in line with the thread at the top thereof; the shift plate 43, is to one side of the projection 45, and is held inthe inclined position seen in Fig. 6., by the pin-46, while the shoulder 44, of the shift plate 42, is in line with the path of movement of the projection 45, but held thereabove by the pin 47'.

As the needle approaches the inner end of the spiral groove of the record disk, the frame shiftin arm 23, approaches the collar 40, of the nk 38, and finally engages it; with the continued movement of said arm, (which is caused by the continued movement of the reproducer and tone arm toward the left) the ear 39, forces the collar 40, and therewith the link 38, toward the left, swinging thereby the lever 35 toward the left and consequently shifting the frame C, toward the left untilv the shift late 42, drops off the pin 47, whereupon t e shoulder 44, falls into the path of the oncoming projection 45, which thereupon strikes and quickly pushes back the shift plate and therewith the frame C, bringing the roller 33, into the engagement with the uppermost threads ofthe worm just as the roller 34, is moved away from the lower side of the worm. The worm continues to rotate and the roller 33, is thereupon moved downward by reason of its engagement with the worm threads, and the frame C, is turned u on its aXis thereby bringing the arm 31, tiereof to its lowermost position, and its track 27, to its uppermost position. The roller 26, is lifted by the track, and the combined frame shifting arm 23, and reproducer lifting arm 25, is thereupon swung upward, the reproducer swung upward, thereby disengaging the needle from the record disk, and simultaneously the friction roller 48' is brought into frictional engagement with the lower face of the turntable 9, the continued rotation of which effects the outward travel of the friction roller, and. consequent movement of the arms 23,25, toward the right. l tone arm, turns it to the right, and as the `arm 23, approaches its limit of movement, its ear 39, engages the collar 41, pushes it to the right, and therewith the link 38, which swings the lever 35 to the right, thereby shifting the frame C, to the right until the shift plate 43, drops ofl the pin 47, and its shoulder 44, is struck by the projection 45, of the worm and the frame C, and its roller 34 (which at this time'is in raised position) is quickly shifted, bringing the roller 34, into engagement with the worm, which lowers the roller and track side of 'l G5 the frame C, to its former position. As the The arm 23, being secured .to the lthe action 'described is repeated over and over until the motor is stopped.

It is to be observed that the frame C, mayV be constructed of light material, such as wire, and that it is sufficiently flexible to permit slight bending of the transverse portions thereof..so that when the roller 33 lies under the worm, the friction roller y48 is pressed...intomfrictional contact with the under face of the turntable.

Furthermore the collars 40, 41, may be adjusted along the link 38, to accommodate the mechanism to various sizes of record disks, or disks having more or less space for the spiral groove.

More or less variation of the exact form of construction shown and described is possible, without departing from the spirit of this invention; I desire, therefore, not to limit myself to the exact construction shown and described, but intend in thefollowing claims to point out all of the invention disclosed herein.

I claim as new and desire to secure by Letters Patent:

1. Repeating mechanism for phonographs comprising a horizontally and vertically oscillatory arm arranged to be secured to the tone arm of a phonograph, a reproducer lifting arm operatively connected with said first mentioned arm to move in unison therewith, an oscillatory and reciprocatory element having a track for supporting said first mentioned arm, a worm secured to and r0- tating with the turntable spindle of a phonograph, said frame being adapted for engagement with said worm on opposite sides thereof, operative connections between said iirst mentioned arm and frame for shifting said frame into position for engagement with said worm, and a friction roller journaled upon said first mentioned armon an axis at an angle thereto and adapted to be brought into frictional contact with said turntable.

2. Repeating mechanism for phonographs comprising a frame shifting arm and a reproducer lifting arm operatively connected to move in unison, said arms being secured to the tone arm of a phonograph, and having an independent vertical movement thereon, an oscillatory and reciprocatory arm lifting .frame having a track upon which said frame shifting arm is supported, a worm rotating with the turntable of the phonograph, said lframe having o-ppositely disposed offset worm engaging members adapted for alternate engagement with said worm, operative connections between said frame shifting arm and frame, and a friction roller jour- -naled upon sald frame shifting arm on an axis lying at an angle to said arm and adapted to be broughtl into frictional contact with said turntable whenever the track portion of said frame is moved to its uppermost position.

3. Repeating mechanism for phonographs comprising a frame shifting arm and a r e producer lifting arm, connected to move 1n unison, said arms being pivotally connected tothe tone arm of the phonograph on a horizontal pivot, and moving with said arm in a horizontal plane, an oscillatory and reciprocatory arm lifting frame, operatlve connections between said frame shifting arm and frame, a worm rotating with the turntable of the phonograph, said frame having oppositely disposed and offset rollers adapted for alternate engagement with said worm anda friction roller journaled upon said frame shifting arm on an axis disposed at an acute angle with respect to said frame shifting arm, said friction roller being arranged for frictional contact with the underside of the turntable.

4. Repeating mechanism for phonographs comprising a combined frame shifting means and reproducer lifter, connected to and moved in one direction by the tone arm of the phonograph and having a friction roller journaled thereon, and adapted to frictionally engage the underside of the turntable of the phonograph, whereby the combined frame shifting means and reproducer lifter are moved in the opposite direction by the turntable of the phonograph, an oscillatory and reciprocatory frame, said frame having a track, supporting said frame shifting means, and serving, during the return movements of the frame shifting roller, to operatively engage the said means with the turntable, and a worm rotating with said turntable for oscillating said frame.

5. Repeating mechanism for phonographs, comprising frame shifting means connected to and moved by the tone arm of the phonograph in one direction, and having a friction roller journaled thereon, and adapted to frictionally engage the underside of the turntable of the phonograph, whereby the frame shifting means is moved in the opposite direction by the turntable of the phonograph, a reproducer lifting arm actuated by said frame shifting means, an oscillatory and reciprocatory frame, reciprocated by said frame shifting means, and having a track supporting said means durifq; the return movement thereof in operative engagement with said turntable, and a Worm, rotating with said turntable, for oscillating said frame.

6. Repeating mechanism for phonographs, comprising frame shifting means connected to and moved in one direction by the tone arm of the phonograph, and having a friction roller adapted for frictional engagement with the underside of the turntable of the phonograph for returning said means to its original position, a reproducer lifting arm actuated by said frame shifting means, an oscillatory and reciprocatory frame, reciprocated by said frame shifting means and having a track adapted during the return movements of said means to hold said friction roller in frictional engagement with said turntable, and a worm, rotating with said turntable for oscillating said frame.

7. Repeating mechanism for phonographs, comprising frame shifting means, connected to and moved in one direction by the tone arm of a phonograph and having a friction roller adapted for frictional engagement With the underside of the turntable of the phonograph, for returning said means to its original position, a reproducer lifting arm actuated by said frame shifting means, an oscillatory and reciprocatory frame, reciprocated by said frame shifting means, and having a track adapted when in one position to frict-ionally hold said friction roller in engagement with said turntable, and a worm rotating with said turntable for oscillating said frame.

8. Repeating mechanism for phonographs, comprising frame shifting means, connected to and moved in one direction by the tone arm of a phonograph and having a friction roller adapted for frictional engagement with the turntable of the phonograph, for returning said means to its original position, a reproducer lifting arm actuated by said frame shifting means, an oscillatory and reciprocatory frame, reciprocated by said frame shifting means, and havin a track adapted when in one position to frictionally hold said friction roller in engagement with said turntable, said frame having screw engaging means, and a screw rotating with said turntable, the threads of which are adapted to be engaged alternately by said screw engaging means of said frame.

9. Repeating mechanism for phonographs, comprising frame shifting means, connected to and moved in one direction by the tone arm of a phonograph and having a friction roller adapted for frictional engagement with the turntable of the phonograph, for returning said means to its original position, a reproducer lifting arm actuated by said frame shifting means, an oscillatory and reciprocatory frame, reciprocated by said frame shifting means, and having a track adapted when in one position to fric-v tionally hold said friction roller in enga-gement with said turntable, said frame having oppositely disposed offset rollers, and a screw rotating with said turntable, the threads of which are adapted to be engaged alternately by said rollers.

10. Repeating mechanism for phonographs, comprlsrng frame shifting means, connected to and moved in one direction by the tone arm of a phonograph and having a friction roller adapted for frictional engagement with the turntable .of the phonograph, for returning said means to its original position, a reproducer lifting arm actuated by said frame shifting means, an oscillatory and reciprocatory frame, reciprocated by said frame shifting means, and having a track adapted when in one position to frictionally hold said friction roller in engagement with said turntable, means rotating with said turntable for oscillating said frame to raise and lower the track thereof, and additional frame shifting means for quickly shifting said frame, moving with said frame oscillating` means.

11. Repeating mechanism for phonographs, comprislng frame shifting means, connected to and moved in one direction by the tone arm of a phonograph and having a friction roller adapted for frictional engagement with the turntable of the phonograph, for returning said means to its original position, a reproducer lifting arm actuated by said frame shifting means, an oscillatory and reciprocatory ,frame, reciprocated by said frame shifting means, and havin a track adapted when in one position to frlctionally hold said friction roller in engagement with said turntable, means rotating with said turntable for oscillating said frame tol raise and lower the track thereof, shift plates carried by said frame, and means rotating with said frame oscillating means, arranged to engage and quickly shift said frame when approaching the limits of its strokes.

12. Repeating mechanism for phonographs,

' compr-islng frame shifting means connected to and moved in one direction by the tone arm of a phonograph and having a friction roller adapted for frictional engagement with the turntable of the phonograph, for returning said means to its original position,

a reproducer lifting arm actuated by said frame shifting means, an oscillatory and reciprocatory frame, reciprocated by said frame shifting means, and having a track adapted when in one position to frictionally hold said friction roller in engagement with said turntable, a screw rotatlng with said turntable, oppositely disposed and offset means on sald frame arranged to alternately engage with the threads of said screw, to oscillate said frame, a projection on said screw, shift plates carried by said frame, means for normally supporting said shift plates out of the path of movement of said projection, but located so as to permit engagement of said projection with said shift plates when they approach the limits of their movements with the frame.

13. In a repeating mechanism for phono graphs, a frame shlfting arm moved in one direction by the tone arm, and having a friction roller set at an acute angle to the direction of rotation of the turntable of the phonograph, a reproducer lifting arm actuated by said frame shifting arm, a screw rotatin with the turntable, means actuated by sai screw for moving said roller into and out of frictional engagement with said turntable, and operative connections between said frame shifting arm and said means, there being lost motion between said arm and said operative connections to permit of a predetermined sweep of said arm without affecting said operative connections.

14. In a repeating mechanism for phonographs, a left-handed screw secured to and rotating with the turntable supporting spindle, an oscillatory and reciprocatory frame having thread engaging means adapted to be alternately brought into engagement' with the threads of said screw, means operated by the tone arm for effecting movement of the frame in one direction, and means operated by the turntable for effecting movement of the frame in the opposite direction.

MAGNUS W. TURNQUST.

Images