US2265032A - Record resurfacing machine - Google Patents

Description

Dec. 2, 1941. w. F. FEYRER 2,265,032

RECORD RESURFACING MACHINE Filed Jan. 1:5, 195s 6 Sheets-Sho 1 I I I I INVENTOR William 131 2? 1'61 @441, I 61%;, M v*/ wa A TTORJVEY I I I I I I I I I I Dec. 2, 1941. w. F. FE'YRER 2,265,032

RECORD RESURFACING MACHINE Filed Jan. 15, 1938 6 Sheets-Sheet 2 "a H E! I I I on r IN VENT OR William Elyrer I ai awa ATTORNEY Dec. 2, 1941. w E a 2,265,032

RECORD RESURFACING MACHINE 6 Sheets-Sheet 5 Filed Jan. 15, 1938 INVENTOR b'lliam 1 Fayre?" RECORD RESURFACING MACHINE Filed Jan. 13, 1938 6 Sheets-Sheet 5 I INVENTOR v William F. iyrer 34a! Gull ATTO YS w. F. FEYRER' 2,265,032

RECORD RESURFACING MACHINE 7 Filed Jan. 15, 1938 6 Sheets-Sheet 6 INVENTOR I yWiZZL'am F Fayre) 6:422 8W wad I ATTO YS Patented Dec. 2, 1941 2,265,032 RECORD RESURFACING MACHINE William F. Feyrer, Norwalk, Dictaphone Corporation, corporation of New York Conn, assignor ,to

New York, N. Y., a

Application January 13, 1938, Serial No. 184,750

Claims.

This invention relates to record resurfacing machines.

Record resurfacing machines heretofore proposed in practically every instance depended upon cutters, such as steel or sapphire knives, to initially prepare a usual waxlike tablet or record blank for the reception of music, dictation and like recording purposes; or for later refinishing the surface for re-use.

With such previous arrangements it was cusstomary to rotate the record blank at a high rate of speed and to shave a thin strip from the surface while the knife slowly traversed the blank.-

This practice had the disadvantage of sometimes leaving tool marks or vibration characteristics on the record blank and thus producing an unsatisfactory recording surface.

' The high speeds necessary with these prior machines also had the disadvantage of cocasionally dangerously breaking and throwing off a record in small parts if it happened to be cracked in any way.

It is therefore an object of the present invention to provide a record resurfacing machine which need not be operated at a high speed and which will insure a satisfactorily smooth surface for recording.

A further feature is the provision of a resurfacing tool which does not cut or shave the record surface, but which melts the surface in a way to provide an exceedingly smooth and trackless surface, thus insuring good recording and reproducing results.

A disadvantage of prior record resurfacing machines was that considerable time was required to resurface each record (e. g., theresurfacing tool in even the best of known resurfacing machines is moved along a record surface at approximately 100 to 120 pitch per inch, therefore necessitating the rotation of the usual six-inch record cylinder anywhere from 600 to 720 times in order to run the resurfacing tool thereover once, and in many instances a roughing and a finishing cut is required necessitating at least 1200 to 1440 revolutions).

It is therefore an object of the present invention to provide a record resurfacing machine which will be much faster in completing the resurfacing of a record than those heretofore proposed.

A feature resulting from the attainment of this objective is the provision of a record resurfacing machine in which it is necessary to have only one complete rotation of the record support relatively to the tool in order to ini-- tially surface or later resurface the record, and to merely effect two complete relative rotations between the tool and the record support when it is desired to have a roughing and a finishing operation.

A further real disadvantage of prior record resurfacing machines was that the cutting tool would produce a large quantity of fluffy fine wax shavings which had to be removed from the vicinity of the cutting tool and stored temporarily in some suitable large sized container.

It is an important object of the present invention to avoid the disadvantages resulting from the production of fine wax shavings.

This objective is attained by (l) the provision of a melting rather than a cutting tool, capable of surfacing the record, and reducing any waste or excess wax or the like from the surfacing operation to compact solid drippings, rather than fiuffy shavings; (2) diverting the solid wax drippings to an inconspicuous and out-of-the-way location; (3) collecting the waste residue of a large number of record surfaces in a very small mass; (4) collecting waste residue of the surfacing operations in a centralized and easily accessible location so that the same may be removed with ease; (5) moving a waste collector coordinately with the movement of the record so that the waste is evenly disposed in the collector or container; and, (6) providing a temporary container, such as a paper tray, which may be easily dropped in a wastepaper basket or the like when it is desired to dispose ofthe same.

Prior record resurfacing machines, because of the large motors required for high speed operation and the driving of heavy parts, and because of the large space required for collecting the quickly built-up mass of light or fluffy shavings, were very large and cumbersome. Such large resurfacing machines took up valuable office space and could not be conveniently disposed of when not in use.

It is therefore an object of the present invention to provide a compact record resurfacing machine of small size, that will be inconspicuous in an ofiice, and which may be easily closeted in small space when not in use.

With many of the record resurfacing machines heretofore proposed it was a considerable problem to set the resurfacing tool, such as a sapphire knife, in such a way that it would with certainty cut a very thin film from the surface of the record. Heavy cuts and cracks in the record hitting the knife often resulted inbreaking the latter, necessitating inconvenient and costly replacements.

The present invention provides a novel mechanism for accurately moving the record resurfacing tool into the record surface a predetermined extent for the refinishing operation, which, in its present preferred form, includes a gauge and a resurfacing tool at opposite sides of the record with mechanism for concurrently moving both the gauge and the resurfacing tool toward and away from the record support.

A complemental feature is the provision of a simple mechanism for altering the location of the resurfacing tool with respect to the gauge so that the apparatus may be set for either light or heavy resurfacing.

Most of the prior record resurfacing machines necessitated a considerable number of separate operations on the part of the user both in preparing the machine for the resurfacing operation and in subsequently unloading the machine:

and conditioning it for the resurfacing of a subsequent record. So far as applicant is aware, in all prior record resurfacing machines it. was. necessary for the operator to lift the resurfacing tool or knife relative to the mandrel and move it. to the starting end of the record each time it was desired to take a new cut or resurface another record. Likewise, it was necessary for an operator to manually move the resurfacing, tool or knife from a retracted or inoperative position into the operative or resurfacing position relative to the record upon the support.

It is an object of the present invention to overcome the aforementioned disadvantages and provide a record resurfacing machine which will be simpler to operate, require less attention by the operator, and which will be almost fully auto.- matic in its operation.

This objective is attained by (l) the provision of mechanism for automatically moving a gauge and a record resurfacing tool toward and into operative association with a recordupon a record support, when retaining means therefor are manually released; (2) mechanism for automatically closing a circuit to a driving motor and a melting or resurfacing tool when the resurfacing tool is moved toward the operative position; (3) mechanism for automatically engaging a clutch and rendering a driving. mechanism fully operative when the resurfacing tool is moved to the operative position; (4') means for automatically opening the clutch and thereby rendering the driving mechanism inoperative at a predetermined point in the operation of. the driving mechanism; (5) mechanism for automatically retracting the record resurfacing tool and gauge from the record at-the end of the resurfacing operation; (6) mechanism for automatically opening the circuit to the driving motor and resurfacing tool at the end of the resurfacing operation; and (7) mechanism for automatically preparing resilient means for control-- ling the operation of the resurfacing tool and gauge when the record ejector is operated.

Other advantageous features of the invention include the provision of a novel ejection mechanism which moves the entire record support relatively to the base in order to eject the record therefrom; an extremely simple driving mechanism for insuring a smooth operation of the record support; and, power driven mechanism for controlling and conditioning the gauge and re.- surfacing tool.

Fig. 5 is a top plan view of the machine shown Fig. 6' is a wiring diagram.

Fig. 7 is a sectional view taken on line 'I--'! of Fig. 1..

Fig. 8 is a fragmentary view of the control mechanism in a position conditioning the pressure means to urge the resurfacing tool and gauge away from the record on the support, and. for releasing the locking means for the tool and gauge.

Fig. 9 is a fragmentary view similar to Fig. 8 but shows this mechanism in condition for again urging the resurfacing tool, and. gauge toward the record support.

Fig. 101's a fragmentary sectional view taken on line Iii-40 0f Fig. 8.

Before describing the present invention and. mode of operation thereof in detail it should be understood that the invention is not limited to the details of construction and arrangement of? parts shown in the accompanying drawings, which are merely illustrative of the present preferred embodiment, since the invention is capable of other embodimentaandthe phraseology employed is for thepurpose of description. and not of limitation.

Referring now to the drawings; the present. invention comprises a base IU, of compact and. rugged construction, comprising a housing portion H adapted to enclose driving and other operating mechanisms, and a preferably integral standard. ['2 above a table or web section. f3. there of.

Record support The present invention provides a record support M in the form of" a tapered mandrel vertically disposed above the table l3 and mounted. upon a shaft i5 journaled in bearings I6 and I"! provided by the base casting. The support is adapted to hold a record cylinder i8 ofthe usual type used with dictating machines.

A lever i9, pulled upwardly by av spring 20 (Figs. 4 and 7-), engages the shaft l-5 near its lower end to maintain the shaft and record support in a raised position relatively'to the base [0. Preferably a ball thrust bearing 2| is interposed'between the lever 19- and a flange 22 on the shaft (5 to insure smooth action. The spring 20 and lever l9 normally urge the record support [4 from the lowered position shown in Fig. 3 into the raised. position shown in Fig. 1- where the flange 22 engages thelower face of the bearing l1;

Driving mechanism I4 is driven at a slow speed to the record support [4. A clutch 3| is pro- 23 secured by screws 24 tovided to mechanically connect the motor 23 to the record support l4 through the transmission mechanism just described.

The worm 29 also serves simultaneously to rotate a Worm gear 32 associated with the tool positioning and controlling mechanism hereinafter described.

Referring to the wiring diagram, Fig. 6, the motor 23 may be connected to any suitable source of electric power as by wires 33 and 34. The lead 33 may, if preferred, be extended through a wire 35 to a rheostat 36 and then through lead 31 to one side of the motor, or the circuit may be made directly through wire 35 to the motor when no rheostat is used. Preferably the same circuit is used to concurrently energize a heating element 38 in a resurfacing tool 39, see Fig. 1, through wires 33a and 34a or alternatively through wires 34a and 311). A single switch 40 may be used to connect the source of current with the motor 23 and the resistance element 33 in the resurfacing tool 39.

Resurfacing tool A novel type of resurfacing tool is provided, dispensing of steel, sapphire and the like which have heretofore been used, said tool in its preferred form comprising an electrical heating element 38, such as a coiled resistance wire enclosed in a glass tube 4| and supported on a slide 42 as by clamping members 43. The resurfacing tool may be, and as shown is, of greater length than the record cylinder. This resurfacing tool is preferably mounted adjacent the record 18 upon the record support and is adapted under proper operative conditions to melt the outer surface of the cylinder.

The melting operation may be just enough to melt or fold over the tops of the ridges of the previous sound tracks to fill the hollows of those sound tracks, or it may be enough to melt off a thin film of wax from the outer surface of the record, in which event, according to the present invention, the wax flows by gravity down the long glass tube 4| to drip from the lower end through an opening 44 in the table I3 into any suitable receptacle.

This type of resurfacing tool has the advantage of not leaving scratches and tool marks as is frequently the case with the shaving knives now in general use.

The slide 42 which carries the resurfacing tool is preferably mounted in a transverse channel 45 (see Fig. 3) at the upper end of the standard l2 and is held therein by a plate 46 and screws 41. The slide may be moved to any position in the channel 45 manually. It may be held in any adjusted position relative to the record support, as by a thumb screw 48 screwed in the side of the plate 46 and impinging upon the slide 42, as shown in Fig. 1. However, other and more satisfactory positioning and controlling mechanism will be described hereinafter.

Gauge The present invention provides a novel gauge 49 for positioning the resurfacing tool 39 relatively to the record which, in its preferred form, includes a roller 59 having a pivotal connectionv with a slide 5|, transversely reciprocable in a channel 52 near the middle of the upright standard l2, where it too is held in place by the plate 46.

The present invention provides a gear and rack connection between the slide 42 and the slide with the cutting and shaving knives and 54 on the slides and an intermeshing gear 55 on a stud 55 suitably mounted in the standard [2. Thus, when the gauge 49 is moved to the left, as viewed in Fig. 1, as by merely pressing against the back of the slide 5|, the rack 54 moves the gear 55 in a clockwise direction to simultaneously, through the rack 53, move the tool slide 42 to the right. Therefore, if an initial setting is given to the resurfacing tool of, say, three one-thousandths of an inch closer to the center of the record support than the gauge, the tool will melt its Way to such a depth (.003) before the gauge en gages the face of the record at a diametrically opposite point. The initial setting, whether it be one, three, five or more thousandths of an inch, is effected by the tongue and slot connection 51 which may be seen best in Figs. 1 through 3 and Fig. 5, particularly.

Similarly, the gear 55 serves to move the rack 53 and tool slide 42 to the left so that the resurfacing tool 39 will be in an inoperative position relatively to the record whenever the gauge 49 and slide 5| are moved to the right, for example into the position shown in Figs. 2 and 3.

With this gear and rack connection the wing screw 48 previously described may be used effectively to lock both the gauge and the resurfacing tool in either the operative position shown in Fig. 1 or in the inoperative positions shown in Figs. 2 and 3. Only a manual positioning and locking of the resurfacing tool and gauge has so far been described. However, the present invention provides automatic mechanism for positioning, conditioning and releasing the resurfacing tool and gauge.

Such mechanism includes a control lever 58 secured to a screw 59 passing through a suitable slot 69 in an extension 6| of the slide 5| and threaded into a standard 62 rising from the table l3. Thus, when a shoulder 63 on the control lever is moved away from the extension 69 it is possible to reciprocate the gauge slide in the channel 52 and, through the gear 55, to concurrently reciprocate the resurfacing tool 49 relatively to the record support. However, when the shoulder 63 clamps the extension 6| against the standard 62 it locks the gauge slide and simultaneously the tool slide in the operative position shown in Fig. 1.

Slide position controlling mechanism In order to reduce the manual operations and to make the present machine largely automatic the present invention provides a novel controlling mechanism including the worm gear 32 and a cam plate 64 supported within the housing H on a stud 65 journaled in bearings 66 and 61 in the table [3 and base extension 68 respectively. The cam plate 54 is provided with a channel 69 adapted to control a pressure mechanism including a ball follower 19 at the lower end of a spring finger II which is pivoted on a suitable pin 12 in depending lugs 13. The follower 19 rides in the channel 69 at all times. The upper end of the spring finger 1| enters a suitable aperture 14 in the gauge slide 5|.

Whenever the follower 10 is in the concentric portion 15 of the cam channel 63, which has an angular length of approximately 320 deg. and is closest to the axis of the cam plate, the walls of the channel urge the follower and spring finger in a counter-clockwise direction about the pivot 12, as viewed in Figs. 1 to 3, to yieldingly urge the gauge and interconnected tool toward 5!, including racks 53 the record. The outwardly extending portion 16 of the channel 69 serves to move the follower 18 to the left, as may be seen best by viewing Figs. 2 and 8, in order to impart a clockwise movement to the spring finger and thereby yieldingly urge the gauge slide and interconnected tool slide into retracted inoperative positions away from the record.

Normally either dwell 11 or 18 on a detent finger 19 extending from the hub of the control lever 58 engaging a pin 80 on the gauge slide extension 80 serves to hold the gauge and tool slide in the retracted or inoperative positions shown in Figs. 2 or 3, under which circumstances records may be easily changed without danger of striking either gauge or tool.

When the pin 88 is held by the detent finger the relationship between follower 18 and cam slot is as shown in Fig. 9, in which position the spring finger 1| is urged to the left, as viewed in Fig. 3. Accordingly, after a record has been placed upon the support I4 and the detent finger 19 is moved clear of the pin 88, by a partial movement of the control lever 58 in a clockwise direction, the spring finger 1| automatically moves the gauge and interconnected tool into operative relation with the record. Upon complete movement of the control lever clockwise, the shoulder 63 presses the slide extension 68 against the standard 82 to lock the interconnected gauge and tool slides in the operative position shown in Fig. 1.

During this operation an insulated finger 8| on the slide extension 60 moves sufiiciently to the left, as viewed in Figs. 1 to 3, to allow the switch 48 to close the circuit to the motor and, simultaneously, to the heater element for the resurfacing tool.

Also, during this clockwise movement of the control lever 58, near the end thereof, a cam 82 moves a rod 83 downwardly to rock a pivotally mounted clutch shifting lever 84 about its pivot 84 against the tension of a spring 85 to engage the clutch 3| and thereby effect a drive between the motor 23 and Worm 26, the latter in turn serving to rotate the worm gear 21 on the shaft 28, the latter in turn rotating the slow speed worm 29 to cause rotation of the record support l4 through the worm gear 30 and to rotate the cam plate 64 through the worm gear 32.

Thus, the motor concurrently rotates the record support and the slide control cam plate, only one clutch being required to connect the motor with these mechanisms. It should be noted that the worm gear 38 for the record support is of smaller pitch diameter than the worm gear 32 for the control mechanism so that the record support is given one and a fraction turns to each complete rotation of the cam plate.

When the machine is in the operative condition illustrated in Fig. 1, the record is slowly rotated past the resurfacing tool and the cam plate is also slowly rotated in a counter-clockwise direction from the position shown in Fig. 9 to the position shown in Fig. 8, whereupon the cam moves the spring finger 1| into the position shown in Fig. 2 to tension the same and tend to effect movement of the gauge slide 5| and tool slide 42 into retracted positions before these slides are actually released by movement of the locking lever 58.

Release of the slides is effected by a cam 88 on the upper side of the cam plate 64, moving into a position beneath a rod 81 slidable in bearings 88 to lift the rod into engagement with a finger 89 on the control lever 58 and gradually turn the control lever in a counter-clockwise direction from the locking position shown in Fig. 1 to the releasing position shown in Fig. 2. The cam 88 is shaped so that it releases the control lever 58 only after the cam channel 15 is in the position shown in Fig. 8 and the gauge slide and tool slide are resiliently biased toward the retracted position.

When the cam 88 releases the control lever the gauge and tool slides are automatically moved from the operative position shown in Fig. 1 to the inoperative position shown in Fig. 2, whereupon the finger 8| strikes the switch 40 and thereby opens the circuit to the motor and resurfacing tool. This automatically prevents running the motor, and consuming current in the resurfacing tool, should the operator be called away or fail to observe that the machine has completed the resurfacing operation.

By viewing Fig. 5 it will be noted that a set screw 59' is provided to hold the control lever 58 in any desired adjustment with respect to the screw 59. Thus the timing of the release may be accurately set with respect to the lift cam 86. The cam 82 which controls the clutch 3| is also held adjustably by a set screw 90 in such a manner that the clutch is preferably released at the same time that the slides are released and at the time the follower 18 is in the position shown in Fig. 8. The position of the various parts and of the resurfacing tool after the just mentioned series of operations take place is clearly illus trated in Fig. 2.

With the present apparatus it is necessary to pass the resurfacing tool only once over the work in order to fully resurface the same. In view of the fact that the tool enters the wax cylinder a predetermined extent (for example, two or three thousandths of an inch while the gauge only touches the surface), the section of the cylinder reconditioned or resurfaced by the tool is entirely clear of the gauge once such resurfaced section of the record comes opposite the gauge.

Record ejector At the completion of the record resurfacing operation, when it is desired to replace the resurfaced record with another, the operator moves the control lever slightly from the position shown in Fig. 2 to the position shown in Fig. 3, whereupon a finger 9| at the rear or far end of the screw 58 presses downwardly on a slidably mounted rod 92 to move the record ejector lever l9 downwardly so that the end thereof presses against a collar 93 on the shaft |5 and thereby moves the record support downwardly with respect to the base H1 and especially relatively to an ejecting boss 94 which rises above the plate portion I3 of the base, whereupon the said boss engages the end of the record to move the latter axially and upwardly on the mandrel, thus loosening and partially removing the record. Thereafter, the operator may easily lift the record from its support.

It should be noted that the rod 92 is provided with a camming block 95 slidable in a guide member 85' and having an angular face 96 (see Figs. 1, 2, 3 and 10) which moves into engagement with the camming face 81 of a lug 98 on the side of the cam plate 64 to impart a further counter-clockwise movement to the cam plate as the rod 92 is moved downwardly in the record ejecting direction. The angular face 96,

working on the cooperating angular face 91 forces the cam plate 96 from the position shown in Fig. 8 to the position shown in Fig. 9, thus shifting the follower I from the position shown in Fig. 2 to the position shown in Fig. 3 to change the direction of the reaction of the spring finger II so as again to urge the gauge and resurfacing tool toward the record support. However, the dwells I1 and 18 on the detent finger I9 prevent movement of gauge and tool until the detent finger has moved clear of the pin 18.

Movement of the cam plate 64 from the position shown in Fig. 8 to the position shown in Fig. 9 without simultaneous movement of the worm 29 and associated worm gear 32 is permitted by reason of an arcuate keyway 99 in the cam plate 64 and a key I00 on the shaft 65 and worm gear 32, A spring IOI at the underside of the cam plate connected at one end to a pin I02 on the cam plate and at its other end to a pin I03 on the worm gear 32 serves to pull the cam plate to its normal position with the key I00 against the end of the keyway, as in Fig. 8. Thus as the camming block 95 kicks the cam plate 64 in a counter-clockwise direction the cam plate is moved against the tension of the spring I0! even though at this time gear 32 is in a static condition.

Normally the spring IOI would pull the cam plate 64 from the position shown in Fig. 9. In order to prevent this and to maintain the cam plate 64 in the slightly advanced counter-clockwise position, the sliding rod 81 is permitted to drop by gravity in front of wall 86' of the lift cam 86, thus preventing movement of the cam plate 64 by the spring I02. Thus, the rod 81 which serves to release the control lever 58 also serves to maintain the spring finger II in the position for urging the gauge and tool slides into record engaging position until after the worm 29 has rotated the worm gear 32 a sufficient distance to bring the key I00 into engagement with the end wall of the keyway in the cam plate. Thereafter the cam plate slowly completes a rotation. At the end of this complete turn the worm gear again causes the channel in the cam plate to swing the spring arm II in a clockwise direction as viewed in Fig. 2, and again simultaneously effects a release of the locking lever 58 by action of the cam 86 in the manner described above.

After the control mechanism has been prepared by the record ejector and a new record has been placed upon the record support the operator, by merely moving the control lever in a clockwise direction, releases the pin 80 from the detent finger I9 whereupon the spring finger 1| moves the gauge and tool slides into operative relation with the record, in which position the parts are clamped by engagement of the shoulder 63 of the control lever with the extension 60 of the gauge slide. Since this manual movement of the control lever also effects closure of switch 40 and engagement of clutch 3|, the machine is fully conditioned for operation.

Waste disposition In the use of the shaver type of record resurfacing machine there is produced a large mass of fine shavings, requiring the use of large waste receptacles and means for preventing the waste wax from clogging the tool and flying about outside the machine. With the present invention the waste from resurfaced records is reduced to compact drippings which represent only a very small mass even though a large'number of records are resurfaced. Structure is provided herein for readily disposing of these drippings.

This is accomplished by providing a receptacle I05 which may be, with a snap connection I06 (see Fig. 4), quickly attached to the lower end of the shaft l5 of the record support I4. This receptacle alone may be used to catch the drippings but preferably it is used to locate and support a paper tray I01. The receptacle is rotated with the record support so as to catch any drippings which may run down the glass tube II. Thus, the waste drippings quickly pass to an inconspicuous place where they may be collected for a considerable period of time. When it is desired to dispose of the collected waste it is merely necessary to pull the receptacle from the end of the shaft and remove it through the opening I01 formed in the base of the machine.

Variations and modifications may be made within the scope of this invention and portions thereof may be used without others.

I claim:

1. A sound record resurfacing machine, comprising a rotatable support for record cylinders, a resurfacing tool, movable means for supporting said tool operatively and inoperatively relatively to said support, pressure meansshiftable to reverse the direction of action of the force thereof for causing movement of said supporting means to or from operative position, a drive shaft for rotating said record support and a cam associated with the drive shaft and the pressure means for automatically shifting said pressure means.

2. A sound record resurfacing machine, comprising a rotatable support for record cylinders, a resurfacing tool, movable means for supporting said tool operatively and inoperatively relatively to said support, pressure means shiftable to reverse the direction of action of the force thereof for causing movement of said supporting means to or from operative position, means for locking said supporting means in its operative position, a drive shaft for rotating said record support and a cam associated with the drive shaft and cooperative with said pressure means and said locking means for automatically shifting said pressure means and releasing said locking means.

3. A sound record resurfacing machine as in claim 1, having a gauge for predetermining the operative position of the tool in relation to a record on the record support, and means for effecting conjoint movement of the tool and gauge in relation to each other and to the record support.

4. A sound record resurfacing machine as in claim 2, having driving means for said drive slaft and means automatically responsive to the release of said locking means for rendering said driving means inoperative.

5. In a sound record resurfacing machine, in combination, a frame, a rotatable record support mounted for endwise movement in respect to said frame, means for effecting endwise movement of the support, and a member on the frame for engaging the end of a record on the support when the latter is moved endwise, thereby to disengage the record from said support.

WILLIAM F. FEYRER.

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