US1131454A

US1131454A - Sound-reproducing machine.

Info

Publication number: US1131454A
Application number: US63757511A
Authority: US
Inventors: William C Wolfe
Original assignee: Individual
Current assignee: Individual
Priority date: 1911-07-08
Filing date: 1911-07-08
Publication date: 1915-03-09
Anticipated expiration: 1932-03-09

Description

W. C. WOLFE.

scum) BEPEODUCING MACHINE.

APPLICATION FILED JULY 8, 191.1.

Patented Mar. 9, 1915.

2 SHEETS-SHEET 1.

Gum-n W. C. WOLFE.

SOUND REPRODUCING MACHINE.

APPLICATION FILED JULY 8,1911.

1,131,454. Patented Mar. 9, 19151 2 SHEETS SHEET 2.

To all whom it concern:

Be it known that I, WILLIAM C. lVonrn, a citizen of the United States, residing at Lilly, in the county of Cambria and State of Pennsylvania, have invented certain new and useful Improvements in Sound-Reproducing Machines; and I do hereby declare the/following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it apprtains to make and use the same, reference being had to theaccompanying drawings, and to letters or figures of reference marked thereon, which form a part of this specification.

This invention relates to improvements in sound reproducing machines.

The object of my present improvements is to provide a simple and economical arrangement of parts for using either disk or cylindrical records.

A further object of the invention is to provide special means for operating the mandrel, whereby the latter may be revolved to reproduce from standard records. or the lat-- eral transverse movement of said mandrel may be retarded to reproduce records which require a greater number of revolutions per inch of its transverse movement than that required in playing the standard.

The invention also relates to an improved means for supporting one end of the mandrelshaft to re ieve the strain, due to the weight of the I'Et'alt'l when the opposite end of said. shaft is released to permit it to re volve, and which may be disengaged from the shaft when it is desired to reproduce from records-z of unusual length.

the invention also comprehends improvements in the various details of construction and arrangement of parts which will be hereinafter described and particularly pointed out in the claims. y

In the drawings: Figure l is a vertical longitudinal section of my improved machine. Fig. 2 is a transverse section on the line :c-.r, Fig. 1. Fig. 3 is a detail transverse section on the line y-y, Fig. 1. Fig. 4 is a-detail plan view of the free end of the sound conveyor. Fig. 5 is a transverse section on the line 55, Fig. 4. Fig. 6 is a detail perspective view of parts of the operating mechanism. the cylinder record mandrel, and the turntable for a disk record. Fig. 7 is a detail section on the line aa, Fig. 1, illustrating the nut out of engagementwith the smam w m mandrel screw. Fig. '8 is a similar view but illustrating the nut in engagement with the screw to laterally feed the mandrel. Fig. 9 IS a detail elevation of an electric governor. Fig. 10 is a transverse section of the same.

The same numerals refer to like parts in all the figures.

1 indicates a casing in which is mounted a spring motor 2, including a power-shaft 3, provided with two grooved pulleys 4 and 5. Also supported in the casing is an electric motor6, including a shaft 7, provided at one end with a governor 8, and at its opposite end with a pinion 9. The pinion 9, meshes with a gear wheel 10, mounted on a countershaft 11, which has secured to one end pulleys 12 and 1.3. On the upper surface of the casing 1, is a standard 11, in which is mounted a longitudinally disposed screw threaded shaft 15. The opposite end of this shaft is ordinarily supported in a standard 16, pivoted to ears on the casing. Depending-from one side of the standard 16, is a lug 17, which cooperates with a spring 18, formed time WOLFE, Y. enemies.

H 'Patented Mar, 9,19,15.' .I -ia pt-icaii-oii medley-8.1911; Seria1No'.6'37,5'i5: 1

with a depression l9,'in which the lugseats to hold .he standard 111 vertical position to receive the end of the shaft 15. Fitting in a threaded opening in the end of the shaft 15, mounted in the standard 1 1, is'a screw 20, on which is a threaded nut .21, adapted to move on the screw between the head of the latter, and the face of the standard and rigidly secused to the shaft 15, just inside the standard 14, is a gear wheel 15*. The object of this construction is to securely hold the shaft Slidably and loosely mounted on the sleeve 22, is a mandrel sleeve 27, formed with a flange "28, at one end and threadedat its opposite end, as at 29. Fitting against the flange 28, is a milled collar 30, held in place bva collar 31, rigidly mounted on the mandrel-isleeve 27. Projecting from the milled collar 30, is'a lug 32, fitting in an opening in the collar 31. This lug is designed to be oscillated in the plane of the end of a longitudinally disposed flat spring 33, secured to the mandrel sleeve 27, and has secured to it a depending nut 34, threaded on its under surface to engage the threaded shaft 15. The free end of the flat spring is disposed at an angle to form a cam surface-for the lug 32, to engage, whereby to elevate the nut from the threads of the shaft 15. Screwed or otherwise fastened to the inside of the mandrel sleeve 27, is a guide block 27, which fits in the slot 23, to prevent said mandrel sleeve turning on the sleeve 22. When the milled collar 30, is turned to disengage the lug 32, from the flat spring, it is held in position by a spring detent 35, secured on the collar 31. A mandrel 36, is supported at one end on the collar 31,and at its opposite end it is threaded and engages the threads 29, on the mandrel sleeve 27, as shown in Fig. 1. If however, one of the large concert records is to be reproduced the mandrel 36, is removed, and one of large diameter is substituted, as shown in dotted lines at 37, in Fig. 1. In the standard 14, is a screw 38, on which is eccentrically mounted two

pinions

39 and 40, one being larger in diameter than the other, and designed to be brought into meshing relation with the gears 15*, and 24, when the screw 38, is turned. On the casing is mounted a vertical standard 42, formed with a central opening, and within said casing is a bracket 43, formed with bearings 44, in alinement with the opening in the standard 42. Mounted in these hearings is a vertical shaft 45 provided with a grooved pulley 46, and a fast pulley 46 substantially in the plane of the spring motor shaft 3, and a grooved pulley 47, fast on the shaft and a loose pulley 47*, about in theplane of the power shaft 11, of the electric motor. At the upper end of the vertical shaft is a turn table 48, to receive flat disk records. The vertical shaft 45 and the sleeve 22 may be revolved either by the spring motor, or by the electric motor, at the pleasure of the operator. \Vhen operating with the spring motor, a belt 49 passes around the grooved pulley l of the spring motor and the grooved pulley 26, on the sleeve 22, which impart-s motion to the sleeve 22, and a" belt 52, is passed around the rooved pulley .3, on the spring motor and around the pulley 46, on the vertical shaft 45, to revolve the turntable alternately with the sleeve 22; belt tighteners 51, being mounted on the spring motor frame to take up the slack, as shown in Fig. The belt tigliteners are each connected with an operating rod 51*, so that by moving same up or down the belt may be shifted from the fast and

loose pulleys

46 and 46* or the fast or loose pulleys 47-47. If, however, it be desired to operate the turntable and the mandrel by means of the electric motor. a belt 53, is passed around.

the grooved pulley 12, on the shaft 11, and the pulley 26, to revolve the sleeve 22, and a belt 54, is passed around the grooved pulley 26, to revolve the sleeve 22, and a belt 54, is passed around the grooved pulley 13, on the motor shaft and the grooved pulley- 47, on the vertical shaft 45. By this construction it is obvious that either motor is adapted to be used for the operation of the' machine, whichever is the most convenient. Furthermore, by reference to the drawings, it will be seen that I dispense entirely with the use of gears for transmitting direct power from the motor to the mandrel and turn table, and employ belts which greatly reduces the noise and avoids confusion of sound in the reproducing of a selection.

On the rear of the casing is adjustably mounted a standard 60, provided with a vertical opening 61, to accommodate a spring 62, and a headed pin or journal 63, supported on said spring. The diameter of thev head of the pin 63, approximates the diam: eter of the opening 61, so that the said pin may be freely rocked in any direction,-and at its upper end itengages an opening 64, formed on a lug in the neck of a sound conveyer 65. The free end of the neck 65, fits into an opening 66, in the head 67, of the standard 60. Projecting from diametrically opposed sides of the vertical portion of the sound conveyer are trunnions, 68, which bear against the under side'of the head 67, and for form a pivot on which the sound conveyer vertically rocks,due to irregularities in a record. Formed in the upper part of the head 67, is an overhanging flange 69, open at its front edge to receive the flanged end 70, of an amplifier 71, the front portion of the flange 70, being engaged by a pin 72, to hold the same in the groove formed under the flange 69, in the head 67. Between the standard 60, and the mandrel 36, and mounted on the top of the casing 1, is a standard 75, provided with an adjusting screw 76, and cooperating with the standard is an extensible arm 77, having a transverse upper end 78, formed with a series of depressions 79 and 80. The lower end of this extensible piece is formed with a slot 81, through which a screw 76, passes, whereby to adjust the height of the level of the grooved piece 78, to form a suitable support for the sound conveyer, as will be presently described.

In operation, assuming what is known as a standard cylindrical record is to be played, the parts will be positioned as shown in Fig. 1. That is, the screw threaded shaft15, is held in fixed position by adjusting the nut 21, against the surface of the standard '14, and the screw 38, is adjusted to throw the

gears

39 and 40, out of engagement with the

gears

15, and 24, so that power from .itwill also revolve the nut 21,0n the threads A preveritbmding' of the parts and permit the mechanism to freely move. If the sound box is one in'iwhich a slight oscillating movement is permitted independent of the sound con'veyer- 65, the extensible piece 77, will be elevated and the sound conveyerwill be supported in one of the depressions '19. However, if the sound box hasno oscillating movement and the latter must be imparted through the sound conveyer, the extensible piece will belowered and the construction of the headed pin 63, and the trunnions 68, will allow of all necessary rocking motion to permit the stylus to be free to be moved in any direction in traversing the record grooves. In thisconnection, 1t may be stated that if it be de sired at any time to elevate the stylus from the record grooves when the machine is not in use, the sound conveyer is supported in the depressions 80, which are a trifle higher than the; depressions 79. If a record having a greater number of grooves per inch is to be reproduced, the mandrel must be revolved at the same speed, but its lateral movement will-be retarded. To accomplish this result, the screw 38, is turned, which because of theeccentric mounting of the gears 38-and 4.0, will'move the latter slightly toward the standard 14, and at the same time elevate them and thereby bring them into mesh with the gears 15*, and 24. l/Vhen it is desired to perform this operation, the nut 31, is released to free the screw threaded shaft 15, to permit it to turn when the gears are inmesh, and the motor is started. The gears are relatively proportioned, so that the speed of the mandrel will at all times be the same, and when the screw shaft is revolved it retards the movement of the nut 21, so that it travels about half the' distance traveled when the screw shaft is stationary. Hence simple and effective means are provided to play what is known as either a two or four minute record. If it be desired to use a very long record the hinged standard 16, is thrown down that the end of the record may overhang the end of the mandrel.

The sound conveyer is so constructed that it will accommodate a reproducer to be used with a flat disk record or a reproducer to be used with a cylindrical record. lVhen playing a disk record, the sound conveyer is swung around over the turntable, the, motor is started; in the usual'manner, f

When using 1, 'ctric motor, it is of thei utmostimportance thatithe speed be con trolled, and I "therefore providefa special construction for this purpose. T e'govri or comprises a disk 80, secured on the shaft 7, and provided with an annular fiangefilll Secured on the inside of the flange 8-1, are two flexible angular levers 82. Each level 82, is of an lar formation and the bent end thereof is m the form of an O-G curve, and a screw 83, passes through 1e bent end and a nut 84, clamps the und rside of the bent portion, said nut bearing against the disk to prevent it turning. The inner end of each lever is provided with a weight 85, and a spring contact finger 86. The spring contacts are designed to engage with a sleeve 86, on the shaft 7, said sleeve being insulated from the shaft as shown at 87. One of the wires to conduct the current to the motor is connected to the sleeve 86, and the current passes through the disk from a wire 88, secured to the end of the shaft 7. \Vhen the speed of the motor exceeds the determinate number of revolutions, the weighted levers 85, are centrifugally thrown outwardly, and the spring contact fingers are disengaged from the sleeve 86, and thereby breaks the circuit. Obviously this construction will govern the speed of the motor and maintain. uniformity in the operation of the machine.

What I claim is:

1. In a sound reproducing machine, the combination of a motor, a threaded shaft, a mandrel support mounted over the threaded shaft, a mandrel on the mandrel support, a threaded adjustable nut between the threaded shaft and the mandrel whereby to cause the latter to move laterally, a connection between the motor and the mandrel support, gears on the threaded shaft and the mandrel support, shiftable ears for engaging the gears on the mandrel support and the threaded shaft, and means for holding the threaded shaft stationary when the shiftable gears are out of engagement with the gears on the threaded shaft and the mandrel support whereby when said gears are in mesh the" threaded shaft; and the mandrel port, and a locking device for holding the threaded shaft in fixed osition when the shiftable gears are out of engagement withthe gears on the threaded shaft and the mandrel support.

3. In a sound reproducing machine, the combination of a motor, a screw threaded shaft, a mandrel support mounted on said screw threaded shaft, a mandrel on the mandrel support, a connection between the man drel support and the motor to directly drive the mandrel, a shiftable nut between the mandrel and the threaded shaft, gears on the threaded shaft and the mandrel support, and shiftable gearing adapted to be brought into engagement with the gears on the threaded shaft and the mandrel support for retarding the lateral movement of the mandrel.

4. In a sound reproducing machine, the combination of a screw threaded shaft, a mandrel support, a mandrel mounted thereon, means for revolving the mandrel support alone, shiftable means for simultaneously revolving the threaded shaft with the mandrel support, and a nut interposed between the threaded shaft and the mandrel whereby the mandrel will move laterally at a given speed when the mandrel support is rotated alone and said mandrel will move laterally at a less speed than the aforesaid given speed when the mandrel support and screw shaft rotate together.

5. In a sound reproducing machine, the combination of a revolving mandrel support, a mandrel mounted thereon, a screw threaded shaft, means between the screw threaded shaft and the mandrel to cause the latter to travel laterally on the support, and means for revolving the screw threaded shaft to retard the lateral movement of the mandrel and maintain the revolving speed of said mandrel, and means for revolving the mandrel support.

6. In a sound reproducing machine, the combination of a threaded shaft, adjustable means adapted to hold the threaded shaft stationary, a gear on the threaded shaft, a I""=.I1ClI'el. support including a slotted sleeve, a gear on the slotted sleeve, a mandrel on the mandrel support, a removable nut fitting in the slot and carried by the mandrel and engaging the threaded shaft, means for rotating the mandrel support, and shiftable gears adapted to mesh with the gears on the threaded shaft and the mandrel support, whereby when the adjustable holding means is released andthe gears are in mesh the mandrel will be moved laterally at one speed and when the threaded shaft is held stationary and the shiftable gears are out of mesh the mandrel will be moved at a different speed.

7. In a sound reproducing machine, the combination with a threaded shaft, a support for the shaft, a threaded element ex tending from the end of the threaded shaft, a nut engag ng the threaded element to bind and hold the threaded shaft stationary in its support, a gear on the threaded shaft, a mandrel support including a slotted sleeve surrounding the threaded shaft, a mandrel mounted on the sleeve, a gear on the sleeve, a spring actuated nut connected to the mandrel and engaging in the slot and the threaded shaft, means for holding the nut out of engagement with the threaded shaft, means for rotating the sleeve, and two gears mounted eccentrically and adapted to be engaged with the aforesaid gears whenthe first mentioned nut is disengaged to change the speed of the lateral movement of the mandrel.

8. In a sound reproducing machine, the combination of a threaded shaft, a mandrel support surrounding the threaded shaft, a mandrel mounted on the mandrel support,

means for rotating the mandrel support,

and means including gears and an adjustable device for rotating the threaded shaft simultaneously with the mandrel support to move the mandrel laterally at a determinate speed or holding the threaded shaft stationary and rotating the mandrel support alone to change the speed of the lateral movement of the mandrel.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

\VILLIAM C. WOLFE.

\Vitnesses:

W. N. Woooson, J1\'o. Imam.