US1740425A - Record-resurfacinc machine - Google Patents

Description

DEC- 1i, 1929. v. l.. FRYKMAN 1,740,425

RECORD RESURFACING MACHINE Filed Sept. 3, 1927 5 Shee'ZS-Sheei'l l $1 l (Wn l f mlommn/mmnw i, 1mm

Q w "m" @mui m iwi Q INVENTOR. VICTOR LFRYKMAN ORNEY Dec. l?, E929. v. 1 FRYKMAN RECORD RESURFACING MACHINE Filed Sept. 5, 1927 5 Sheets-Sheet 2 IN V EN TOR.

N mmm BY VICTOR LFB MAN ANEY Dec. 17, 1929.

v. L. FRYKMAN RECORD RESURFAGING MACHINE Filed Sept. 3, 1927 5 Sheetsheet 5 INVENTOR. VICTORHYIM AN A RNEY Des. i7, 1929.

v. L.. FRYKMAN 1,740,425

RECRD RESURF'AGING MACHINE Filed sept. 5,. 1927 l5 Sheets-sheet 4 Fig. 5.

IN VEN TOR.

VICTOR LFRYKMAN Y i g BY ORNEY Dec. 17, 1929. v. 1 FRYKMAN L'Z RECORD RESURFCING MACHINE Filed sept. 3, 1,927' 5 sheets-sheet. 5

INVENTOR,

VICTOR I FRYHMAN ATTORNEY Patented Dec. 17, 1929 .time M UNET@ Spiriti? VICTOR L. FRYKMAN, OF BRIJGEFORT, COlitllBCTCUT, ASSIGNOR TO DIC'IAPIIONE CORPORATION', OF GONE HTCUT, A COR1?ORATION OF NEW YORK RECORLLEL S'JRFACITG MACHINE .Application filed September This invention relates to record-resuriacing machines, and more particularly to an improved machine for shaving record-blanks, particularly7 those intended iter use with dictation n'iachines.

ltecord-resmt'acing machines as previously proposed have comprised a frame, a rotatable record-supporting` mandrel mounted on the frame, a movable mandrel-end supporting means, a record-ejectinn' mechanism, and a tool-carriage adapted to he moved longitudinally ot the 'frame over a record supported by the mandrel. This carriage, in the Jform shown, comprises means ior quickly setting' the record engaging; tool relative lo a record to he resuriiaced and automatically operated means for advancing),l the tool step-hy-step toward the record ifor successive finishing` cuts.

A feature ott the present invention is the provision of means for automatically ejecting the recordv incidental to t-he movement et the mandrel-end supportingn means to inoperative position, so that the record will he ejected without attention on the part oi' the operator when the mandrel supporting' means is moved preparatory to the removal of the record from the machine.

Another 'feature is the provision oi means for automatically and coordinately releasing' the l:nite-bar locking means, restoringn the knife advancing means, and ejecting); the record from the record-supporting;- mandrel incidental to the movement ot' the mandrel-end supporting' means to inoperative position when' a record has heen resuriaced and is to he removed 'from the machine.

A i'nrther feature is the provision oi means which automatically causes the return ot the record-ejector to inoperative position alfter a record has been ejected andY while the inandrel-end suppoiting` means is inoperative to support the mandrel, so that the recordejector is not in position to obstruct or prevent the final placing of another record on the mandrel while the mandrel-end supporting` means isstill in inoperative position.

@ther features and advantages will hereinatter appear.

ln the accompanying` drawings which illustrate one form of the present invention, that at present preferredlfignre 1 is a top plan view ot' a record? resurfacing machine made in accordance with the present invention.

Fig. 2 is a rear view, partly in section, of a recoitl-iesiiitacing machine made in accordance with the present invention, showing1 the movable mandrel-vend supporting means in mandrel supporting` position, with the related record ejector, knife-bar lock releasing and ieed restoringl means in normal or inoperative position.

Fig. 3 is a View similar to Fig. 2, but shows the end `gate ont of mandrel supporting position with the record-ejector in operative position and the knife-har lock released and feed means restored, and shows the mechanism for accomplishing these various operations in position to trip-oit and become temporarily disassociated from the means which it operates.

Fig. si is a fragmentary view,l partly in section, ot the interconnected knife-har and gage in set position relative to a record.

Fig. 5` is a bottom skeleton plan view of some oii the operating parts oi' the present invention.

Fig. 6 is a side sectional view showing the automatic step by step knife advancing means.

The record-resurfacing machine illustrated herein comprises a hase 12 provided with a. lett-hand standard 13 and a righthand standard lil. Supported between these standards is a carriage guide rod 15 adapted to receive a hearing sleeve 1601i' a knife-har carriage 17, The kniteeloar carriage 17 extends torwardly and upwardly from the sleeve lo to a point near its forward end where it is provided with a hall-shaped weight and hand-piece 18 shaped tol he conveniently grasped and to act as a lmnd-piece by means ot which the carriage is moved', and from the latter it continues downwardly to a shoe portion 19 which normally contacts with and slides on a iront rail 20 forming part ot the traine.

Located in iront of the guide rod 15 and supported at one end on a pivot screw 21 carried by the standard 14, is a mandrel shaft. 22 carrying a driving pulley 23 and a mandrel 24. At its end opposite the pulley 23, the mandrel shaft is supported for rotation by a pivot screw 25 carried by an end gate 26 secured to a shaft or stud 27 which is rotatably mounted in the frame 12 at 28. The end gate 26 is held in mandrel supporting position engaging the end of the front rail 2O by a selflocking manually releasable spring catch 29 engaging a cooperating stud 30. The catch 29 is provided at its front end with a finger piece 31 by means of which it is manipulated. wWhen the gate 26` is opened by swinging it from the position shown inFig. 2 to that shown in Fig. 3, the'mandrel shaft 22 rests on an auxiliary support 32 on the frame 12, and free movement of the mandrel and mandrel shaft to the left, as'viewed in Fig. 1, is prevented by a collar 33 carried by the mandrel f shaft and adapted to engage the support 32.

y The end-gate 26, in addition to supporting the free end of the mandrel, also functions to prevent the record from being thrown off the mandrel (which might cause serious damage) should the record accidentally become loosened from' the mandrel or should the operator fail properly to place the record on the mandrel before starting the machine. In the broader aspects of the invention, therefore, the part 26 should be understood to be a mandrel-end guard.

After a record 34, which is to be resurfaced, is placed on the mandrel 24 as shown in Fig. 1,' the operator grasps a handle portion 35 on the gate 26 and swings the latter on its shaft 27 until a pin 36 on the end gate entersV an aperture 37 in the rail 20, While the pivot screw 25 in the end gate enters a companion hole 38 in the end of the mandrel shaft andV raises the mandrel shaft to operating position. With this movement, the catch 29 engages the stud 30 and serves to hold the mandrel in operating position. This means for locking the end gate as illustrated and described is claimed in the patent to Thomas Hei-lilly, No. 1,726,894, patented September 3, 1929.

With the record mounted on the mandrel and the end gate locked in mandrel supporting position, the record is in position to be shaved which results from movement of a knife 39 mounted on the carriage 17 longitudinally ofthe record 34 on the rod 15 and rail 2O under the influence of a rotating feed screw 40 mounted between the standards 13 and 14 and engaged by a feed nut 41 mounted on the sleeve 16 of the knife-bar carriage. The feed-screw 40 is caused to operate coordinately with the mandrel shaft 22 by means of a connecting belt 42 engaging a pulley 43 on the feed screw 40 and a pulley 44 carried by the mandrel shaft 22 along side of the pulley 23. The pulley 23 is usually driven by an electric motor (not shown) mounted below the frame 12.

Phonograph record-blanks are customarily cut or shaved to resurface them for Vuse when it is desired to obliterate an old reccrd before making a new record on the surface of the blank. This operation may also be accomplished by means, lof burnishing, melting or other arrangements, and so far as some or the salient features of the present invention are concerned, it is immaterial whether the record-engaging tool used be a knife, a burnisher, or other device. However, since the method of cutting is the one most frequently used and most preferable at present, means for that purpose is illustrated herein.l

Accordingly, the machine shown in the accompanying drawingscomprises a knife-bar 45 adapted to carry at its forward end the knife 39 usually formed of sapphire or other hard stone. This knife-bar is slid ably mount ed in a housing or knife-carrier 46 which is pivotally mounted on the carriage 17 and is Vadapted to be moved so as to bring the knife 39 into Contact with the record surface, so that simultaneous rotation of the record 34 and travel ofthe knife 39 with the knife-bar carriage 17 while the knife is in engagement with the record causes the top surface thereof to be removed. The knife is preferably provided with a chipchute 47 into which the shavings from the record pass and through which they fall downwardly through a trough 48 forming part of the frame 12 to a suitable container below the frame provided i for the purpose of receiving the chips.

In order that the knife 39 may be quickly Y and easily set to proper operatingr position for taking a first or preparatory cut when resurfacing a record-blank, means are provided whereby a direct manual operation, requiring no special attention on the part of the operator, causes the knife bar to be so set that it will extend into the record material only a predetermined and set amount, whereby the layer of record material removedwill be of predetermined thickness. This means, comprises a gage-bar 49 mounted in the knife-bar carrier 46 for the knife-bar 45 and adapted Y to slide parallel therewith. The vknife-bar 45 and gage-bar 49 are tied together by a yoke or tie-bar 50 for movement en bloc toward and from the record surface, so that, when they are moved forwardly toward the record blank, the front face 51 of the gage will engage the record surface and limit the extent of forward movement of the knife 39 beyond the record surface.

The knife-bar 45, the gage-bar 49 and yoke 50 are so interconnected and formed that the working surface of the knife 39 usually X- tends beyond the working surface 51 of the gage bar 49 by an amount equal to substane tially fifteen thousandths of an inch. This, with an additional advance of five thou- ,1 change the depth of cut determined by the gage 49, and this is accomplished by provid'- ing onf the gage a screw-threaded portion 52, adjustable in the threaded section 53 of the tie-bar connected to the knifeL bar 45.`

vtothe knife to suit average conditions, these parts are moved fromnormal inoperative position to position for taking a first or preparatory cut on the record 34 by the operator 20; pressing his linger against the finger piece 54n carried by the gage-bar until the flat end 51 of the gage-bar comes in Contact with the record surface, at which time the edge of the knife will be located forwardly of the record aV predetermined amount;

In order to hold the knife-bar 45 in any manually adjusted position, means are provided for locking the knife-bar in the knifebar. carrier 46 so that it will be firmly held While shaving arecord. This means, in the form' shownI in the accompanying drawings, comprises a shaft mounted to rotate in the carrier 4G adapted to extend transversely of the knife-bar 45. The shaft 55 is provided with a cam section 5G adapted to engage a flat surface 57 on the bottom of the knife-bar 45 so that when' the shaft 55 is rocked by a spring 58 (Figs. 2, 8) the cam section 56 Will be brought into-engagement with the fiat surface 57 on the knife-bar to firmly lock the knifebar in place. ranged that should the knife-bar 45 under cutting pressure tend to move backu'ardly it would cause the shaft 55 to be rocked, thereby causing the cam 5t to move tightly and firmly engage the knife-bar and prevent its further movement.

A manually operable release lever 59 which is fastened to the end of the cam shaft 55 is provided to actuate the shaft and release the knife bar 45. A spring 58 anchored in the housing and to the release lever 59 serves to normally hold the cam section` 56 of the shaft in contact With the flat surface 57 of the knifebar.

The gage-bar is arranged to follow the knife-bar 45 considering the direction of travel ofthe carriage in shaving` a record. Consequently, the knife -bar and gage-bar are adapted to' be set to position to take a first cut when the carriage is at the end of its travel (shown in Fig. 1) after finishing a shaving` operation'. l

The first or preliminary cut is'seldom sufficient. to properly finish .therecord surface.`

The cam section 56 is so ar-v For' the purposeA ofy takingY additional or" finishing cut-s of predetermined extent without manually resetting the knife-bar 45 ini` theV housing, means are? providedV for auto'- matically advancingthe' knife 39 toward the record 34 a predetermined extent incidental to the operation of moving the carriage toA starting position of' travel. Accordingly,the knife-bar carrier 4G is pivot'ally mounted on a shaft 60 carried in a pair of ears 61 andr62 formed integral with the carriage 17 and between which earsthe endlv 63 of the knifebar carrier snugly fits. The shaft 60 is parallel tothe axis of the mandrel 24 so'that when the knife-carrier 46 is rocked on the shaft1v the knife 39 Will' be moved toward or fromr the record, according to Whether the knife-` bar carrier 4G is given a clockwise or counter-v clockwise movement, as seen in Fig; 6'.

Normally, the knife-bar carrier 46 is urged rearwardly, that ist'o say, away from the mandrel 24, by means of a spring 64 locatedin the carriage frame 17 which forcesa' plunger 65 upwardly against a forwardly extending arm 66, part of the knife-bar carrier 46; lt is against the tension of'thespring64 that the knife-bar earrieris advanced step-by-step toA move the knife' 39l closer tothe yrecord 34 for successive'finishing cuts.

rlhis step-by-step movement of the knifeba'r' carrier 46- is controlled by a cam-disc (i7 mounted on'a stud GSlon the carriage 17, cooperating with a roller '69? mounted on a stud TO'carried by the arm 71 ofthe cuttercarrier. The' spring 64- normally' urges the knife-bar carrier 46 rearwardly so that the roller 69f contacts with the periphery ofthe cam disc'.

The'cam disc 671 is provided with aseriesof ratchet teeth 73' adapted to be engaged by a feed pand-74 pivotally` mounted on a paivlcarrier 75 which pivots on a stud 'r'carried by` the carriagev 1'?.4 The ratchetV teeth 73 are also engaged by a back-check pawl 77 pivotally mounted on'therstudl 761 and normally urged by the Weightl of1 its arm TS'into engagement with Vthe ratchet teeth to prevent return movement ofthe cam disc 6'1" by' acftion of a spring 79; located in an undercutv portionin the boss 80, see Fig. 6.

In order that thecam disc G7, and hencel the knife 39 may be moved step-by-'step'f to accommodate for successive finishing cuts as` an incidentto the movement ofthe carriage to position to start shaving a record, the carrer 75 for the feed pawl' 74 is arranged" to overlie a projection 81 on the basel plate 12V Whenthe carriageV is, as shown inY Figs; 2 or 3, in the position at the end'v ofv a shaving operation. The parts are so arranged that when the carriage 17 is raisedr by means of the hand-piece 18 from the positions shownini Figs.` 1 andv 6" pivotalllyV on the carriage rod 15, the' loW-erportion ofthe paWl-carrier 75v engages the projection 81 on, the frame;y

lill) and causes the pawl 75 to engage a ratchet tooth on the cam disc 67 and move the latter an amount equal to the distance between two Y teeth, the pawl 75 at this time moving block-` wise, as seen in Figs. 2 and 3, against the tension of a spring 82. l/Vhile the cam disc 67 u is being so moved, one of the ratchet teeth thereon passes theback-check pawl 77 and the latter then prevents the return of the cam disc 67 to starting position.

This upward swinging movement of the carriage 17 is necessary to allow movement of the carriage to starting position, for by it the feed-nut 4l is removed from the feedscrew shaft 40, and the knife 39 and 49 are moved away from the record. With the carriage so raised, it is moved longitudinally of the machine toward the other or starting end of the record and, upon reaching that end, it is allowed to descend when the feed-nut 4l again engages the rotating feed screw 40 and causes longitudinal travel of the carriage, and the knife again engages the record 84 and shavcs the same as a first finishing cut. l

During the movement of the carriage to starting position, the feed-pawl carrier 75 slides oft' the projection 8l and is returned to its normal position by a spring 83 wrappedv around the stud 76 and having one end anchored in the pawl carrier 75 while the other end is anchored in the carriage 17.

If the first finishing cutis not suflicient to provide a satisfactory recording surface on the record, additional finishing cuts may be obtained by again raising the carriage 17 and moving it to starting position. Thus, without making any manual readjustments of the knife, the automatic advancing means, comprising the feed pawl 74 and cam disc 67 above referred to, will ad- Vance the knife by moving the knife-carrier 46 arcuately toward the record during the raising of the carriage.

After the record has been satisfactorily shaved, the knife 39 and knife-bar carrier 46 with the step-by-step advancing means, comprising the cam disc 67, are -returned to normal position so that the knife may later be manually set to take a first or preparatory cut from a new record. To do this, the

lever 59 is operated to rotate the cam shaft 55 against the tension of the spring 58 to thus release the knife-bar 45. Vhen so released, the knife bar is restored to inoperative position by means of a spring 84 located in thek knife-carrier 46. At the same time, the knife-advancingl cam disc 67 is released so as to permit its return by the spring 79 by causing the back-check pawl 77 to beV disengaged from the ratchet teeth 73.

`This is accomplished `without requiring attention on the part of the operator by providing a connection,lbetween the weight arm 78 of the back-check pawl and an arm on the knife-bar lock lever 59, comprising a lug on the weight arm vof the back-check pawl which is adapted to extend into an aperture 86 on the knife-release lever.

Hence, when the knife-release lever 59 rotates with the shaft 55, the arm thereon will raise the arm 78 of the back-check pawl lever 77 and remove the pawl from engagement with the ratchet teeth. By this operation, the cam disc 67 is permitted to be returned to normal or initial position by the spring 79, because the feed pawl 74 is normally out of engagement with the ratchet teeth 7 3. When the cam disc 67 is returned to normal or initial position, it allows the knife-bar carrier 46 to be moved to its normal or initial position by means of the spring 64 provided for thevpurpose. Movement of the cam disc 67 is limited in both directions by a stop pin 87 engaging shoulders 88 and 89 on the cam disc.

As explained above, means have heretofore been provided for manually releasing the knife-bar locking means for restoring the knife-advancingv means and for separately ejecting the record. According to the present invention, however, means are provided for automatically and coordinately releasing the knife-locking means, restoring the knife advancing means, and ejecting the record incidental to the operation of moving the end gate 26 from the mandrel supporting position.

The present invention further provides means comprising an automatic trip-off arrangement to disassociate the record-ejector, knife-advancingmeans and knife-bar locking means from the end gate when the latter has completed its movement to non-supporting position with respect of the mandrel.

Before continuing with the description of the above, attention is called to the fact that much of the record-ejector shown in the accompanying drawings is similar to the usual record-ejectors for record-resurfacing machines. This usual construction comprises a record-ejector plunger 90 slidable longitudinally of the machine in the standard 91 and normally held in inoperative position by a spring 92. The plunger may be moved forwardly, until a head 93 thereon engages the record to loosen it from the mandrel 24, by movement of a lever 94 mounted on a rocker-shaft 95 journalled in the standards 96 and 97. The rock-shaft 95 is usually provided with a manually operable lever which serves to rotate the rockshaftand thereby move the lever 94 and related plunger, 90 against the records edge to eject the same.

According to the present inventiomhowever, this manually operable means mounted on the rock-shaft is dispensed with and instead the rockshaft is automatically actu ated by means operatively related to the record-supporting end gate 20. rlhis means comprises a cam 98 secured to the stud 27 to which the gate 20 is also secured. This cam 98 cooperates with a bell-crank 99 pivoted on a stud 100 and connected to a link 101 by a stud 102. The link 101 is movable longitudinally of the machine on a stud 103 sliding in an aperture 101 therein and supports a lever 105, which is held thereon by a stud 106, and a spring 107, the purpose of which is hereinafter explained.

In the i'irst part of the movement of the end gate away from the mandrel supporting position (Fig. 2) ,the link 101 is automatically moved by the cam 98 in the direction oli' the arrow shown in Fig. 3, and thereby causes the lever 105 to enga-ge a lever 108 iiXed to the i'ocksliaft't 95 and moves the rockshat't in a counter-cloclrwise direction, see F 3, causing the ejector leveil 94( and plunger 90 to move toward the record until the record is released 'from the mandrel.

rlhis is a very advantageous result for, by it, the time and energy heretot'oie required Aior separately manually operating the record ejector is saved and no mental etlort requirerl lby the operator relative to the proper sequence of operation for conditioning the machine, since the record is automatically ejected incidental to the regular operation oi. opening the end gate 26.

llt should be especially note-:l that the present invention also provides automatic trip-oft means for tiie return of the record-ejector to inoperative position when the end-gate is completely opened, thereby permitting the mandrel to receive a ne f' record without interference with the plunger 90. To do this, the lever 105 is made in the form oi atriplever and has an ear 109 which engages a cam section 110 of the lever 108 when the link 10.1 has been moved longitudinally as viewed in Fig. 3, a distance sui'hcient to complete the movement of the ejector plunger. lllith further movement of the link 101, as the opening movement oi the gate continues, the ear 109 in Contact with the cam section 110 causes a toe portion 111 ot the trip-lever 105 to move over a step 112 on the edge of the lever 108 until the toe 111 slips oli." the step 112 (as it about to do as shown in Fig. After this trip-ott', the plunger 90, the rock-shaft 95 and related parts are moved to inoperative position by the spring` 92, irresoective of further movement or lack oi' movement of the end With the iturther movement ot the end gate 2G to .i extreme open position, the link 101 is moved further to the right as shown in Fig. "l and the ear 109 ot the trip lever 105 travels over the cam sui-tace 110 of the lever 108 while this leveil is positioned as shown in Fig. lilith the end gate 26 fully opened the `operator removes the shaved record tablet Vtrom the mandrel 241 and then placesfanknife-advancing means, thereby allowingfthe saine to be returned to `inoperative position incidental to the operation ot moving'the endgate out of mandrel supporting position .when the carriage is in predetermined position.

According to the present invention, .this

means comprises a bell crank 114i pivoted on the stud 103 and adapted to be moved'clockwise by action of a roll 115-mounted on Ythe rock-shaft lever 108 contacting with an exe.v

tension 116 of the bell crank whichi'orces the bell crank in a clockwise direction, thereby causing an extension 117 of the bell crank to contact with and vertically raise a spring pressed plunger 118 whichis mounted to slidek n `in the frame.

Further movement of the bell crank 114 with the extension 117 `in contact with the plunger 118 forces the same upwardly until it contacts `with thestop pawl eXtension119,-.

moving the latterr clockwise. rlhis clockwise movement ot the stop pawl through itsconnection with the knife-bar release lever 59 inthe aperture 86 moves the lever 5.9 and shaft 55 until the knife-bar 415 is released when it will be returned to inoperative position by the spring 89, and also moves the stop pawl 77 out of engagementwith the teeth 7 3 of the cam disc 67, thereby permitting the knife'bar carrier i6 and the knife-advancing' means to be returned. to normal inoperative position by action oi"- the springs 64 and 79 respectively.

lt will be noted that the trip-oil arrangement Jor the record-ejector Vabove described also serves to return the release plunger 118 to normal position. rlhis is accomplished after the trip-off occurs when the lever 108 carrying the roll 115 moves in a clockwise 'di- Vi'ection, thereby permitting` the bell crank'llt and plunger 118 to return to normal position by action ot the spring 120.

Thus, it will be seen that the present invention provides means for accomplishing the advantageous results of coordinately and automatically releasing the knife-locking means, restoring the knife-advancing means, and ej ecting the record incidental to the usual and regular operation of opening the mandrel-supporting end-gate, and provides such means with an automatic trip-olf for return- .los

ing the record-ejecting mechanism and the "knife-bar lock and advancing mechanism retions of the improvements may be used Without others.

iI-Iaving thus described the invention, what is claimed as new and for Which it is desired to obtain Letters-Patent, is

1. In a record-resurfacing machine, the combination of a mandrel for supporting a record to be resurfaced; an end-gate; and means operatively related to the endgate for automatically ejecting a record from said mandrel in response to movement of the end gate.

2. In a record-resurfacing machine, the combination of a mandrel for supporting` a record to be resurfaced; an end-gate; a record engaging tool; means for locking the record engaging tool in desired relationship with the record; and means for automatically and coordinately releasing the tool locking means and ejecting the record incidental to the operation of moving the end-gate out of operative position.

3. In a record-resurfacing machine, the combination of a mandrel for supporting a record to be resurfaced; an end-gate; a record engaging tool; automatic means for advancing the record-engaging tool toward the record for successive cuts; and means for automatically and coordinately restoring the tool advancing means and eject-ing the record incidental to the operation of moving the end-gate out of operative position.

4:. In a record-resurfacing machine, the combination of a mandrel for supporting a record to be resurfaced; an end-gate; a record engaging tool; means for locking the record engaging tool in desired relationship With the record; automatic means for advancing the record engaging tool tovvard the record for successive cuts; and means for automatically and coordinately releasing the tool locking means, restoring the automatic tool advancing means, and ejecting the record incidental to the operation of moving the endgate out of operative position.

5. In a record-resurfacing machine, the combination of a mandrel for supporting a record to be resurfaced; a carriage; a record engaging tool; an end-gate; means for locking the record engaging tool relative to the record; means for automatically advancing the record-engaging tool a predetermined eX- tent toward the record for successive cuts; a record-ejector; and means operable only When the carriage is in predetermined position for automatically and coordinately releasing the tool locking means, restoring the tool advancing means, and ej ec'ting the record incidental tothe operation of moving the endgate out of operative position.

6. In a record-resurfacing machine, the combination of a record-supporting mandrel; an ejector for the record; and means for operating the ejector comprising mechanism adapted to permit return of the ejector to normal inoperative position after said ejector has been moved by said operating means a predetermined extent in operating direction and before the said operating means has been released.

7. In a record-resurfacing machine, the combination of a record supporting mandrel; an end-gate; a record engaging tool; means for locking the tool relative to therecord; an ejector for the record; and means for automatically and coordinately releasing the tool locking means and operating the record ejector incidental to the movement of the endgate out of operative position, said means being adapted to permit return of the tool locking means and record ejector to normal or inoperative position after said end-gate is moved a predetermined extent.

8. In a record-resurfacing machine, the combination of a mandrel for supporting a recordto be resurfaced; an end-gate; a record-engaging tool; tool advancing means; an ejector for the'record; and means for automatically and coordinately restoring the tooladvancing means and operating the recordejector incidental to the movement of the endgate out of operative position, said means being adapted to permit return of the tooladvancing means and record ejector to starting position after said yend-gate has been moved a predetermined extent.

9. In a record-resurfacing machine, the combination of a mandrel for supporting a record to be resurfaced; an end-gate; a record-engaging tool; means for locking the tool relative tothe record; means for advancing the record engaging tool toward the record for successive cuts; an ejector for the record; and means for automatically and coordinately releasing the tool locking means, restoring the tool advancing means and ejecting the record incidental to the movement of the end-gate out of operative position, said means being adapted to permit return of the tool locking means, the tool advancing means, and the record-ejector to normal position after said end-gate is moved a predetermined extent.

10. In combination, a record-support; means for releasing a record from said support; an operating device for said means; and a trip-olf connection between said oper4 ating device and said means for disconnecting said means from said operating device upon tbe completion of tlie operation of said means.

11. In combination, a. record-support; means for releasing a record from said support; an operating device for said means; a trip-o connection between said operating device and said means for disconnecting said means from said operating device upon-tlie completion of the operation of said means; and means for returning said means to inoperative position when disconnected from said operating device.

12. In combination, a recordsupport; a record -ejector; recordejector operating means; and means to permit return of tbe record-ejector before the return of the operating means therefor. W

13. In combination, a frame; a recordsupporting mandrel; a. record-ejector; a lever on said frame; means to operate the recordejector when said lever is moved; and means to permit return of the ejector before the re turn of the lever.

14. In combination, al record-supporting mandrel; a record-ejector; an end-gate; and means operated by tlie said end-gate to operate the record-ejector.

15. In combination, a record-supporting mandrel; a record-ejector; an end-gate; means for operating the record-ejector incidental to tlie movement of the end-gate; and means to permit return of the record-ejector before the return of the end-gate.

1G. In combination, a frame; a lever on said frame; a record-supporting mandrel; a record-engaging tool; tool-locking means; a reeordejector; means for operating the record-ejector and releasing the tool-locking means incidental to the movement of the lever; and means to permit return of the tool-locking means and the record-ejector to normal position before tbe return of the lever.

17. In combination, a frame; a lever on said frame; a record-supporting mandrel; a record-engaging tool; toollocking means; tool-advancing means; a record-ejector; means for operating the recordejector, releasing the tool-locking means and restoring the tool-advancing means incidental to the movement of said lever; and means to permit return of the record-ejector, the toollocking means and the tool-advancing means to normal position before the return of said lever.

18. In combination, a frame; a` lever on said frame; a record-supporting mandrel; a record-engaging tool; means for advancing the tool toward the record for successive fin` isliing cuts; a record-ejector; means for operating the record-ejector; release means for restoring the tool-advancing means incidental to the movement of said lever; and means to permit return of the record-ejector and said release means before the return of the lever.

19. In combination, a record-supporting mandrel; a record-engaging tool; means to lock said tool; tool-advancing means; a record-ejector; a lever; means for operating the record-ejector and/or release means to restore the tool-advancing means and/or release the tooladvancing means, incidental to the movement of said lever; and/or means to permit return of the record-ejector and/or said release means and/or the tool-locking means to normal position Without returning said lever.

Signed at Bridgeport; in the county of Fairfield, and State of Connecticut, this 11th day of August, 1927.

VICTOR L. FRYKMAN.

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