US1886063A - Winding machine - Google Patents

Description

Nov; 1, 1932.

F. D. SPRAGUE WINDING MACHINE Filed Dec. 17, 1929 5 Sheets-Sheet 1 INVENTOR.

ATTORNEY.

Nov. 1, 1932. SPRAGQE 1,886,063

WINDIYNG mAcfimE Filed Dec. 17. 1929 5 Shuts-Sheet 2 I N VEN TOR.

. ATTORNEY.

Nov. 1, 1932. F. D. SPRAGUE WINDING MACHINE Filed Dec 17. 1929 Sheets-Sheet 3 em \m I NVEN TOR.

ATTORNEY.

Nov. 1, 1932. Y F. b. SPRAGUE 1,886,063

- 7 WINDING momma Filed Dec. 17, 1929 5 Sheetshet 4 INVENTOR.

BY 2M A TT ORNE Y.

F. D. SPRAGUE WINDING MACHINE Nav. 1, 1932.

5 Sheets-sheaf. 5

Filed Dec. 17, 19 29 A TTORNE Y5.

Patented Nov. 1, 1932 UNITED STATES PATENT. o'FricE FRANK DESMOKD- SPRAGUE, OF QUINCY, MASSACHUSETTS, ASSIGNOB T SPRAGUE SPECIALTESOOMRANY, OF QUINH, EASSACHUSETTS, A CORPORATION 01? MASSA- GHusEr'rs- I wrnnnve imonnvn v Application filed December 17, 1929. Serial No. 414,737.

The present invention relates to windingmachines and more particularly to machines for the mass production of coiled articles wound to a predetermined number of turns.

One application of this invention is in the manufacture of a certain type of electrical condenser which consists of a composite coil comprising as a rule two metallic strip conductors, separated'by interposed layers of paper or other suitable dielectric material.

These condensers, as a rule, are wound from endless rolls of metal foil and paper cut to the proper width, the rolls being so disposed relative to'each other that in winding the metal foil and paper layers two or more paper layers are interposed between the two metal foils.

The mandrel is rotated manually or a motor and the condenser wound to the required number of turns, after which the mandrel is. stopped and the paper and metal foil severed from the stock rolls.

All other factors remaining unchanged,

. the capacity of the condensers is dependent vious, therefore, that to obtain a predeteron the length of the wound strips. It is obmined capacity, the number of turns of the condenser have to be maintained with great accuracy; For this purpose winding machines, as a rule, are provided with revolu tion-counters. When the operator, tollowing the indication of the counter, notices that the required number of turns to which the con:

denser is to be wound, is approached, he

4 specifications,

slows down or stops altogether the winding mandrel and by careful rotation thereof completes the winding of the condenser. Y I

It is evident from the foregoing that such procedure not only requires frequent observation of the revolution counter onthe part of the operator, and thus not only interferes with and delays or prevents him in his other functions, but also considerably slows down the winding operation due to the required slow and careful winding of the last few turns. Furthermore, even with the greatest care on the part of the operator, mistakes due to the human element, are likely to occur, and as the last turns of the condenser correspond to the diameter of thecondenser,

invention to provide'a mechanism whereby the winding machine, after winding a. predetermined number of turns-determined by the setting of the machine-is automatically stopped at exactly the number of revolut1ons required for the winding of the con.- denser to its proper capacity.

Furthermore, when the condensers ar wound with present-day winding machines, the operator is required to manually sever the metal and paper-strips from the stock rolls, and also required when starting anew j .condenserto bring the paper and metalstrips inproper lateral and longitudinal alignment to the winding mandrel. These operations, besides requiring special skill and care on the part of the operator, also considerably I 1 reduce the speed of production.

It 1s, therefore, a further object of my invention to relieve the operator of the duties of severing and re-aligning the w-indingstock and to increase the speed of operation by providing means to automatically sever and; realign the metal and paper strips.

' Further objects of my inventionwill pear as thedescription progresses.

in the drawings forming part of these Figure 1 is a vertical elevation of a winding-machine embodying my invention, as

viewed from the'operators position.

Figure 2 is a side elevation of Figure 1,

as viewed from the leftof' the operators position. V Figure 3 IS a front elevation of the drivingmotor and transmission mech anism.

- Figure 4 is a top view of the mechanism illustrated in Figure 3.

Figure '5 is a side View showing the gear and chain transmission means as viewed from Figure is a sponding spindles 15ii these spindles being and eeding mechanism.

Figure 8 is a plan view of the cut-off mechsectional view of the trip- ,block.

Figure 10 is a side view of the trip-block as viewed from the right of the operators position.

rier me and associated mechanism.

Fig. 12'is a frainental 'side view showinga properly reinforiced by a vertical stiffening rame 12 and by ribs 200 the frame being rovided with a plurality of bored' bosses 2000, which constitute bushin of correadapted to carry stoc rolls a/1, a2, etc.

In the illustration eight spindles 15-15 are shown corresponding to the eight stock rolls a-1to a8. Of these rolls the rolls a-1 and 0- -5 are rolls of metal foil, while the rest are rollsof aper, and the'disposition of the rolls is suc that in winding three layers of pa r are interposed between the."

two layers 0 metal foil.

For proper alignment of the ndividual layers the spindles 15 are provided with lateral ad'ustment, effected by -means of hand-wheels 16 and when adjusted the spindles are loclred in the desired by locking wheels 17.

Carried on each spindle 15 and secured thereto. is a guide-flange 201, having preferably a larger diameter than the maximum diameter of the stock to be wound. The stock rolls are pressed with their inner face against the flange 201 by means of clampin collars 19, slipped over the spindles 15, an secured thereto by means of butterfly nuts 202.

For the pro r retardation of the stock during the win and for the maintenance of its r0 r tension, I provide for weighted bandro 203, suspended eitheron upper or on lower supporting studs 204, respectively 205, which project orizontally rom the frame 11. In case of new stock rolls and as long as the original diameter of the roll has not'been reduced below a given limit, the bruke-band,as shown for the seven rolls,

position a1, a'-2 and 0-4 to 0-8, is suspended on 11 is a perspective view of the car.

' 30, which in 0 low that limit, (as shown for roll a--3), to

maintain proper tensioning, the brake-band 203 is removed from its stud 204 and suspended on the corresponding stud 205.-

To feed and guide the winding stock from the rolls toward, the winding mandrel 25, later to be described, there are provided proper guiding and feeding means. These means comprise carefully ground rotatable rollers 20, their spindles l98vbeing supported in bushings 207 of bosses 207a of the frame 11, one guide roller 20 being provided for each of the stock rolls except roll a-4, the disposition of which requires an additional roller 20-a, and roll a--8, disposition of which requires no such roller.

After passing rollers 20, the stock strips are carried under individual guide rollers 21, which are similar in construction to the rollers 20, and which are preferably arranged in a bank unit, their spindles 199 beingsupported in bushings of a common obliquely dis osed boss 21-a of the frame 11. From rol ers 21 the material is fed over individual fixed guide-rods 208, preferably supported by a common vertically-disposed bracket 209,

.aflixed to the frame 11 by screws 209a.

From the guide-rods 208 the individual strips are fed to a common gathering roller 22 of the roller carrier-frame 88,later to be described,

.23 and 24 of the roller carrier frame and thence is wound around the mandrel 25.

The disposition of the stock is shown for condensers having two layers of metal foil with three layers of paper interposed. It

is apparent that by omitting some of the pa-' per rolls the same machine can be used for condensers having less than three layers of paper between the metal foil, and it is also obvious that by increasing the number of spindles, condensers having a larger number of paper and metal foil layers can be wound.

It should also be noted that the shown disposition of the stock rolls and ide-rollers provides for a very compact and asily serviceable layout of the winding-machine, whereas the feeding, aligning and braking means insure exactness and proper tensioning of the winding. I

The driving mechanism is illustrated in Figs. 1 to 5. The unit is located on the top of the bed-plate .10 to the ri t of the frame 11, and in front of the sti ening frame 12, and comprises an electric motor ration, is in constant revolution irres ectlve of intermittent stoppage of the winding. Provided on the motor-shaft 210 is a fly-wheel 31 (see 4), the rightits . hand face of which constitutes a hollow cone.

Cooperating with the hollow cone to form a clutch mechanism therewith is coned mem- The shaft 212 also carries a driving sprocks et37, which engages by means of a chain 38, a sprocket 39, provided on a threaded-mandrel-driving shaft50, this shaft being supported on its right end by a pedestal bearing 64 and at itsleft'by a bearing 224 of the frame 11;. A fixed idler pulley 40, carried by an idler-arm 41, aiiixed to the pedestal 64,

' and when the latter, through engagement of enables adjustment of the chain 38.

. and 32 result in stoppage of the drivin shaft 50. To accelerate stoppage a brake-s ea 34 f so a locking-collar 53. The latch-rod 54 -also Fig. 4)..

From the above it"znay be seen that engagement of the clutch member 32 with the corresponding driving member 31, causes rotation of the driving-shaft 53 through the 4 medium of the aforesaid gear and chain transmission.

- Disengagement of the clutch members 31 is provided, which engages the outside face of the clutch member 32. when this member is in its disengaged position (as shown in l shall now proceed in describin the means for the control of the winding an automatic sto mechanism, details of which are shown in igs.3,4,8,9,10 and 11.,

These means-comprise the mandrel driving shaft 50, previously referred to, which is threaded throughout its whole length and provided with a handwheel 130. Forming an extension of the shaft 50 is a winding mandrel 25, its winding portion proper beingdisposed to the left side of the frame 11;

llocated below the driving-shaft 50, and supported on its right-hand end by the pedestal 64, and on its left-hand end by a pedestal 63. isa guide-rod 55, below which and also supported by the pedestals 63 and 64 is a threaded latch-rod 54. The rod 54 is slidably mounted whereby a spring 65 disposed in a bore 214 of the pedestal 64 presses against the right-hand end of the latch-rod 54' and tends to force it toward the left.

Carried on the driving-shaft 50 is a trip.

block51, details of which are shown in Figs. 9 and 10. The trip-block consists of a block 51a havin 'a downward extending portion 48. The b ock 51a is-provided with a bore 56.

of slightly larger diameter than the drivingshaft 50, and the extension 48 is provided with a bore 55a, adapted to receive the guide rod 55. Located ina longitudinal recess 57, 1

- of the block 51, abovethe bore 56, is a pawl 58, swingedly mounted on a pivot pin 59 and provided with a handle 60. a A top plate 215,

* rovided with an aperture 216 to receive the andle 60 is screwed or'otherwise secured to a assumes the position shown in Figs. 9 and 10',

whereby it projects with its toothed end'into the bore 56 and thereby engages the threads nder the action of a spring ofthe shaft 50. However; upon counterclockwise movement of the handle 60 the sector 61 from the threads of shaft 50.

When the pawl 58 engages the shaft 50 shaft 50 toward the right and advances on the shaft' the distance of one thread for every revolution of'the shaft. The extension 48 being guided by the'rod 55 prevents the tripblock' 51 from rotating with the shaft 50.

.pawl 58 is. lifted and disenga'ges its toothed Carried by the latch-rod 54 are two threaded nuts or collars, viz. a stop-collar 52 and carries at its right-hand and a lever 78, which enables the operator to force the shaft 54 towards the right against the action of the spring 65 Mounted on the left-hand vside of the bearmg pedestal 63' is .a starting and latching .mechanisn'i, details of which are shown in Fig.- 6. A latch lever 66. is mounted on a v pivot 219, of the pedestal 63, and has three extension arms of which the upper 220 carries on its end the latch-cam 222, the extension 67 forms an operating handle, and the extension 221 serves as an anchor for a latch spring 68.- The other end of the spring 68 isanchored in an adjustablescrew-hook 69, carried by the plate 10.

It will appear that if the shaft 54 is moved toward the'ri ht by means more fully detoward the leftabuts with its end 7 2 against the face of the cam 222 and is thereby prevented from such leftward movement. Upon depression ofthe handle 67 in the position 'shownin ig. 6, the cam 222 trees the end 72 and thereby allows the shaft to slide toward the left and behind the cam 222, thus preventing the-latched lever from returning to its normal position.

Connected'to the extension 220 about in the middle thereof is a tie-rod 71 (see Figs. 4 and v 6) which interconnects the latch 66 with the I locking-nut 7 4a.

clutch-member 32 by the following means: The tie-rod 71 is threaded on its portion 80, and carries there ad'ustably a nut 74 and a ngaging the tie-rod by means of its bifurcated end 44 is a doublearmed clutch-lever 7 3,-7 3a, pivoted to the'frame of the motor at 42. A portion 79 of the tie-rod 71 extends beyond the bifurcated end of the arm 73 and is provided on its end with nuts 75 and a washer 77, and between said washer and the bifurcated end 44 there is located a helical compression sprin 76, pressing a ainst the arm 73. The arm 3a of the c utchlever engages by means of a suitable joint 43 the shaft 33 of the clutch-member 32.

To start rotation of the winding mandrel, the operator depresses the starting handle 67, first against the sole action of the spring 68 and upon further movement against the combined action of this spring and the leafspring 70. This draws the tie-rod 71 forward and rotates the clutch lever 7 3--73a counterclockwise, which causes the cone mem ber 32 to engage the rotating fly-wheel 31 of the motor 30. Power is thus transmitted through motor pinion 35, gear 36, sprocket 37, chain 38 and srocket 39 to the drivingshaft and man rel 25 and causes these to rotate.

As the handle 67 is depressed the cam 222 of the latch 66 clears the end 72 of the latchrod 54, as described, and allows the latter to I move toward the left under the action of the spring 65. T his locks the latch 222 and prevents the tie-rod 71 and lever 73 from returnin to normal position.

ith the shaft 50 thus rotatin the tripblock 51 progresses toward the rig t until its downward rojection 48 engages the stop-collar 52, an in its further movement thus forces the tie-rod 54 to the right against the action of its spring 65. Retraction of the end 72 releases the latch-lever 66, and the spring 68 returns the latch-lever 66, handle 67 and tie-rod 71 to'their normal position. The arm 73 being also returned to normal osition, eauses the cone 32 to disengage the y-wheel 31 and to engage, with its right-hand face, the stationary floating brake-shoe 34.. This arrests the driving-shaft 50 and thus stops winding of the condenser.

The number of turns of the condenser as appears is thereby determined by the position ral part of the carrier-frame 88, is a cross of the stop-collar 52, which is shifted to obtain a seiected number of turns and secured in such selected position by the locking-collar 53. To increase the number of turns the collar 52 is moved toward the right, and vice versa.

After the winding of a condenser is comleted, to start winding of a subsequent conenser, the operator ma return the tripblock 51't0 its initial position by first disengaging the pawl 58 by counterclockwise rota-' tion of the handle 60 and then pressing the block towards left by means of this ban e.

The handle '78 provided .on the rod 54 -enables the operator to manusll stop winding at any desired moment. y forcing, ,by means of the handle 78, the latch-rod 54 toward the right the latch is returned to its normal stop position in a similar way as through engagement? of the trip-block extension 48 with the stop 52, whic has been discussed previously. V

The leaf-sprin provides for a soft and easy starting of t e mechanism. The sprin as previously stated, does not press norm y against the latch cam'222, but only upon sli ht depression of the starting handle 67. In t is position of the handle 67 the clutch members 31 and 32 are partially engaged, permitting a slipping action. If the operator further depresses the handle 67 the-faoe of cum 222 clears the end 72 of the latch-rodi54. This locks the latch 66 and brings the clutch mem here into full engagement.

The s ring 76, which is adjustable by means 0 the nuts 75, compensates for any wear of the clutch faces or slack motion that may result in the bearings or other portions of the device.

The winding speed may be changed either by regulating the speed of the motor or by substituting the s rocket wheels 37 and 39 with wheels of di erent size.

A revolution counter 226 is preferably provided and is shown as being supported on the pedestal 64 and driven by means of gears 227 and 228, from the shaft 50. This revolution counter is used for the setting of the stop collar 52 on the rod 54, as weli as a check, but is not required in regular operation as it is apparent that once the collar 52 is properly set, the required number of turns will be obtained automatically.

The cut-off and feeding mechanismtsee Figs. 1, 2, 7, 8, 11 and 12) comprises a carrleri frame 88 having two arms 260-260 connected by a flat rib 261, said frame being inclined toward the front and supported by means of a spindle 87, pivoted at one end in the frame 11 and on its other end in a bearing 253 of a vertical' end-plate 85. The carrier-frame 88 is subiect to angular motion around the spindle 87 under conditions later to be de scribed.-

Fixedly connected with or forming integarm 251-252. Anchored to the rear extension 252 of the cross-arm is a coil-sprin 89, the other end of which is anchored to thefixedlate 10 by means of an adjustable screw 255. i e coil spring 89 tends'to impart to the cartier-frame 88 a-counterclockwise rotation and thus to lift its front end. To arrest such rotation of the frame, there is rovided an adjustable stop-screw 90 carried y a lag 256,

aspindle 258which is inioned in and pro. jecting through the en late 85. The projecting end ofthe spin 1e 258 is provided with an operating handle 93.- Normally,

stop-block 91 lies with its shortest face against the stop-screw 80, as shown in Fig. 7 however, uponrotatlon of the handle 93 over an angle of degreesthe trip-block 91 confronts its longer face toward's the screw 90, thus the spring 89 to further rotate the frame 88 in a counterclockwise d1- motion and thus further raiseits front end for a purpose later to be described. f For clockwise rotation of the frame 88,

and thus to lower its front-end, there is provided. an 0 rating handle 95, which by go means of a s aft 96, a lever 97 and a 98,

engages a stud 253a of cross-arm 251. Clockrotation of the handle 95 will cause similar rotation of the cross-arm 251, spindle 87 and the frame- 88. The handle 95 is sea cured to the shaft 96-by an adjusting capscrew 100 and the handle may be secured to the shaft in any desired angular relation convenient tothe operator. 1

The clockwise rotation or downward movement of the carrier-frame 88 is limited by an adjustahleistop screw' 101, supported by a bracket 101a afiixed to the end-plate 85,

front end and between these arms rotatably located on the spindle 87 is the main roller 22,- which, as already stated, gathers the individual stock strips fed from the guide-rods 208, into a single composite strip. The ends of the arms 260 constitute bearings 260a for the feeder roller 23.

' .A double-armed swinging frame 103103 4; provided with a cross member 265 is pivoted between the arms 260260 in bushings 263263 thereof by means of a spindle 275. The swinging frame arms 103103 form at their end bearings 264--264 to carry the clamp roller 24. Y

A leaf-spring 105 aflixed to the rib 261 of the frame 88 presses against the crossmem her 2650f the supplemental frame 103 and maintains normally the roller 24 pressed against the roller 23. Afiixed to the right arm of the supplemental frame 103 is a camroller 106, which when the frame 88 is raised above the normal position engages acam 107 aihxed to the frame 11. See Fig. 12.) This prevents the roller 24 from following the frame 88 and the roller23 in their upward movement, and thus provides for a gap between the rollers 23 and 24 for the insertion of new stock. The raising of the frame 88 above its normal position, as has already frame 88' are slightly. upwardly bentat their heen'stated, is obtained by the movement of the handle 93 so as to presentthe-longer face lock 91 to the stop-screw 90.

By returnin handle .93 to the position shown in Fig. the carrier-frame 88 is re turned to its normal position whereby the,

roller 23 again comes to rest on roller 24 and supported and afiixed to on its left side to the top of the end-plate85 and on its right-side by means of a supporting brace 272 to the frame 11. In its central portion the knifeguide is provided with a slot for a serrated knife bladellO. Attached to or integral with the knife-blade 110 is a lug 27 3 pivoted I by means of a pin 117 to a lever 112. The

lever 112 is pivoted on its turn on a pivot 121 to the brace 272, the free end of the lever .112 being provided with a reduced vortion 274 disposed within the extensions 0 a fork 1 V yoke-arm 113, later to be or yoke 275a of a described. a

in the normal position of the cutting mechamsm, as shown in Fig. 8, the portion 274 retracted and rests against a sto -pin 118 providedon the top edgeof. the en -plate 85. r

The yoke-arm 113 is mounted on a spindle 119 pivoted on the end-plate 85, and is re- 1 vided below its pivoting point with a s ort extension 276, to which is suspended a, coilspring 115, anchored with its other end to the end-plate-85. The spring 115 tends to retate the yoke-arm 113 counterclockwise, thus retalnmg the knife-lever 112 in the position shown in Fi 7 and 8. The yoke-arm 113 .is also provi ed'with a sector-shaped extension 280, having a correspondingly shaped slot 121.

Also mounted on the spindle 119 is an ad- Y justable cam-levern 114, which carries on its upper end afianged screw 120, passing through the slot 121 of the yoke-arm 113.

The end-plate 85 is out out corresponding to extension 280, thereby giving access to screw. 120 to permit its adjustment i. e. its shifting in the slot 121. The lower front end of the cam 113 is slightly upwardly curved and cooperates with the carrier-frame, as will be shown later on. i

The yoke-arm 113 also carries a cam 116, which normally abuts against a roller 121 of its normal position and also returns it thereto whenever the carrier-frame 88 is returned to normal position, even should the spring the left-hand arm 260. The cam 116 retains jthe yoke-arm 113 and thusthe knife 110 in preven action of the frame 88 throws out stock ma-,

terial from the rolls a '-1,'a2, etc;

At the same time the frame 88 also approaches the compodte strips to the edge of the knife-blade 112, and when during the tilt-- ing of frame 88 the roller 124 comes to enthe curved lower end of the cam 114, it causes clockwise rotation of this cam and of the yoke-arm 113, and causes the latter to force, by means of its lug 275a pin 274 and lever 112, the knife 110 to project through the slot of the guide 111 and to sever with its'serrations the wound condenser from the rest of the stock. a

When the front end of the carrier frame 88 is lowered by actuation of the handle 95 as above described, and the hand-wheel 130 held fast to prevent rotation of the mandrel, stock is drawn from the rolls without being wound on the mandrel. After the knife 11() severs the wound condenser from the stock rolls and the carrier frame is returned to its normal jects an hangs loosely from between the rollers 23 and 24. The length of the drawnout stock corresponds to the length of the are which the clamping edge of the rollers 23 and 24 describes when these rollers move from their normal into their lowermost positions. These two positions of the rollers are so selected that the length of the drawn-out stock is suflicient, without additional manual drawing of material, to 'n. the winding of a new condenser when t e carrier frame has returned to its normal position.

In case the diameter of t e winding mandrel is changed the arc of swing between the normal and lowermost position of the carrier frame 88 has to be changed accordingl by means of the adjustable stop-screw 10 At the same time, however, it is also required to slightly change the position of the knife cam 114 in its relation to the yoke 113, this being done by shifting the adjusting capscrew 120 in the slot 121.

The clamp rollers 23 and 24 retain the stock in proper alignment to each other and to the winding mandrel, both during cutting as well as in starting the winding of a new condenser.

While I have described and shown a ific structure to illustrate my invention,

it should be well understood that various (position, the drawn-out stock pro-- modifications su themselves to those skilled in the art without departing from the scope of my invention, and therefore the appended claims should be construed as broad as allowedin view of the prior art.

The term, manual operation, in the claims should be construed also to include foo operation. o

'-What I now claim as new and desire to secure by Letters Patent, isz.

1.v In.a winding apparatus for electrical condensers, a frame and stock-roll carrying spindles mounted thereon, a winding mandrel and means to feed and 'de the stock from the spindles to the man el said means including a rotatable feedin frame, manual -means to start rotation of 516 mandrel and automatic means to stop such rotation after a predetermined number of revolutions, and means to rotate the feeding frame relative to the mandrel to advance the stock for the windin of a subsesuent condenser and to sever e wound stock from the stockoroll.

2. In a coil winding mechanism, a feeding frame over which the stock is fed, 'a winding mandrel and manual means to start rotation of said mandrel, automatic means to sto such rotation after the coil has been woun to a predetermined number of turns, manual means to arrest said mandrel independently of the automatic stopping means, and manually initiated means to rotate the fee frame relative to the windin mandrel an to sever the wound condenser om the winding stock and automatically advance stock of suflicient length to start winding of a subsegirnt coil.

3. automatic control device for winding apparatus, comprising a windin shaft and a driving motor clutch mechanism inter osed between said motor and said shaft an a member advancin along said shaft when said shaft is rota an operating handle which, when placed in an operative position causes the clutch to enga and the motor to drive the shaft, automatic means maintaining the handle in its operative tion, and means to return the handle in its rative 'tion and dise the clutch o a r said member has advan a predetermined distance along said shaft.

4-. In a winding apparatus, a normally revolving motor and a normally stationary winding shaft, a member advancing alongsaid shaft when the shaft is rotated, means under the control of the operator for connecting said shaft with said, motor, automatic means for subsequently interlocking such connection Ill feeding device, comprising a pi'votallymounted frame havinga plurality of positions, including an intake, a winding and a cutting position, and resilient means to maintain said frame in the intake and winding positions.

6. In a winding apparatus stock feeding and cutting means, comprising a rotatable feeding frame and means to maintain said frame in a normal position, a cutting device, and means under manual control to move the frame and approach the stock to the cut.- ting device, and simultaneously advance the stock for the beginning of a new condenser,

and to subsequently sever the stock through actuation of the cutting device.

In a winding apparatus stock feeding means comprising a feeding frame, and cutting means normally inactive, clamping an rollers for the stock carried by said frame,

the stock being normally clear from the cutting device and brought in proximity thereof upon manual movement of the frame, said movement also actuating the cutting means 255 to sever the stock. 7

8. In a condenser winding machine a cutting and feeding device, including a rotatable stock feeding frame, means to maintain said frame in normal position, a serrated knife and a a guide therefor, and manual means to rotate the frame to cause the knife to project from the guide and to sever the stock, and means to retain the knife in its guide when the frame is in its normal position.

. 9. In a winding apparatus, in combination a feeding frame and normally inactive cutting means, and manual means to rotate the feeding frame and actuate the cutting means upon rotation of said frame.

g 10. In a winding apparatus, in combination a feeding frame and normally inactive cutting means, means to rotate the feeding frame into a cutting position and actuate the cutting means upon such rotation, and means to adjustably vary said cutting position of the feeding frame and to correspondingly vary the position of said cutting means.

11. In a winding apparatus, a stock cutting machine including a cutter blade and a frame and a manually operated handle to rotate the frame and approach the stock to the cutter blade, and means efiective upon rotation of said frame to advance the blade toward the stock for automatic severance thereof.

Quincy, Mass, Dec. 12, 1929.

FRANK DESMOND SPRAGUE.

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