US1055276A - Winding mechanism. - Google Patents

Description

Patented Mar. 4, 1913.

4 SHEETS-SHBET 1.

P. W. HEMPELMANN.

WINDING MEGHANISM. APPLICATION FILED MAY z2, 1912.

WfTNEssEs Patented Mar. 4, 1913.

4 BHEET8SHEET 2.

INI/EN TOR.

WINDING MBCHANISM.

F. W. HEMPBLMANN.

APPLICATION FILED MAY 22, w12.

.m ...NNN

WTNESSES: @il @QM F. W. HEMPBLMANN.

WINDING MECHANISM.

APPLICATION FILED MAY zz, 1912.

V 1,055,276. Patented Mar. 4, 1913.

4 SHEETS-SHEET 3.

WITNESSES: INVENTOR.

\ S @25 ff/M F.' vv. HEMPBLMANN.

WINDING MECHANISM.

APPLICATION FILED MAY 22, 1912.

1,055,276. Patented Mar. 4, 1913.

4 SHEETS-SHEET 4.

37C j/d/\ `FREDERICK W. HEMPELMANN, OF CINCINNATI, OHIO.

WINDING MECHANISM.

Specification of Letters Patent.

Patented Mar. 4, 1913.

Application filed May 22, 1912. Serial No. 698,875.

To all whom t may concern:

Be it known that I, FREDERICK IV. HEM- PELMANN, a citizen' of the UnitedStates, residing at Cincinnati, in the county of Hamilton andv State of Ohio, have invented eertain new and useful Improvements in IVinding Mechanism, of which the following is a specification.

My invention relates to machine elements, and has for its -object the control of speed ofl travel of an element being Wound, and compensating, in ratio of driving speed to Winding speed, for the increase in periplieral Adimensions of the accumulation due to winding.

A further object is to provide for reversal of the winding operation with synchronous reverse operation of the tcompensating mea-ns during such reversal of the winding operation, and to also provide means for automatically eiecting the change from the winding operation to the reversal thereof, or vice versa.

The invention consists in the parts and in the details of construction and'arrangement of parts, as will hereinafter be more fully' described and claimed.

In the drawings: Figure l is a front elevation of a 'winding mechanism for the sheet 'of a self-playing musical instrument, Which application of my invention I have chosen for illustrating it. Fig. 2 is a plan view of the same. Fig. 3 is a section on the line -x of Fig. 2. Fig. 4 is a detail of the cross-slide. Fig. 5 is a section on the- `line g/-y of Figs. 1 and 2, looking to the left. Fig. 6 is a section on the line 2 2 of Fig. 2. Fig. 7 is a detail of the end-cap for the main friction-wheel shaft.. Fig. 8 is asection onthe line p-p of Fig. 2, parts being omitted for lack of space. Fig. 9 is a section on the line g-q of Figs. 1 and 2, looking to'the right. Fig. 10 is a det-ail pian View of one of the slidable cams with its mounting, being represented as having its cover-plate removed. Figs. 5 to 10 inelusive are on a scale'somewhat enlarged l from that of Figs. lto 4, inclusive. vThe showing of the connections to the mechanis'm of the 'musical instrument proper is omitted forsake of clearness. It will be understood 'that such minor details may Vary, according to the kind of Vinstrument the mechanism is applied to.

In the device here exemplifying my iii,-

vention, the perforated sheet l is wound from the upper spool Q onto the lower spool 3 during the rendition of the music, passing over the tracker-board 1I, which has a series of orifices 4 through which air is admitted when the corresponding perforations 1 of the sheet pass over them. Through these orifices the air acts, by means of suitable mechanism, upon the instrument, in any of a number of ways familiar to those skilled in the art of constructing sclf-playing musical instruments. When the playing of the piece of music has been completed, the sheet is re-wound ontol the upper spool, for repetition. It is commonly desired that this re-wintl, and also the repetition, may be started automatically, and my invention is concerned with this, as will be made plain herein. Another very important requirement is that the sheet, during the playing of the music, shall pass over the trackerboard, at a constantspeed,allowingthe predetermined positions of the pertoiations to have accurate control of the time of the music. It is with this accomplishment that my invention is primarily concerned.

As shown, the spools 2 and 3 are supported in a frame 5, which also supports the tracker-board. The lower spool 8 is simply mounted at one end on a yieldable bearing 3, allowing it to be inserted in the frame, and makes engagement at the other or driving end with a main arbo-r 6, journaled in a bearing 6 in a plate 7 that is fastened to the outside of the frame 5, said bearing projecting through the frame atl this point.. The upper spool 2 is mounted at one end on a yieldable bearing 2, and at its driving end on a re-winding arbor 8, likewise journaled in a bearing 8 in the plate 7, projecting inside the frame 5. The mounting of the upper spool is illustrated in detail in a spring 2f" in a casing 2 around its stein 2. that extends through the rear end of the casing and has a knob 2W lfor taking hold to manipulate thebearingduringinsertion ofthe spool as may well be understood from inspection of the drawing. The lower rear bearing 3 is identical with the upper one,

having, as may be seen in Fig. 1, a plunger and having a casing 3b fromvfhioh the stem 3a protrudes with the knob 31 thereon.

The upper driving-endmounting is diifer ent from the lower driving-end mounting chiefly in that the upper one is adjustable so that the upper spool may be accurately alined with the lower spool. Thus, the rewinding arbor S is hollow throughout, and has its bore somewhat enlarged at its rear end, to receive the forward spindle 2 of the spool 2. A diametralA slot 8 crosses this enlarged spindle-receiving part of the bore, opening from the rear end of the shaft, and receives diametrically extended 'lugs 2 on the spindle.V The slot 8 is long enough to allow enough movement of the lugs 2 therein to provide the desired adjustment of the upper spool with respect to the lower one; The re-winding arbor 8 has another enlargement to its bore at its forward end, and this is threaded and receives an enlarged threaded part of a pin 8a that extends its unenlarged part through the unenlarged -part of the bore in .the arbo-r, and engages' its end with the end of the spindle 2 of the spool 2. The forward end of this pin 8a has a knob 8a, and by turning the pin to screw it in or out, thespool 2 will move longitudinally, against or with the pressure vof the spring 2a at the rear. The lower main arbor 6 receives the spindle 3 of the lower spool 3 in the manner above described, but there is no pin for adjusting the spool. It vwill be seen that with the abovedescribed mountings the spools willlbe rotated with their respective arbors, but may be removed and like spools with different perforated sheets inserted, which is 'a requirement peculiar to self-playing instruments here illustrated. l i

For driving the sheet 'on its downward i travel, -to play the music,.the main arbor 6 has a spur-gear 9 fixed o-n it outside the bearingv 6, and for re-winding the sheet, the re-winding arbor 8V has a spur-gear 10 xed on it outside the bearing 8. Collars 6 and 8 inside the bearings, prevent end play of the arbore 6 and 8, respectively.

The gear 10 of the re-winding arbor has a sheave 10a integral with it, by means of which it is screwed to the arbor, and a shoe 10b bears onthis sheave during the downward travel of the sheet, to prevent racing of the upper spool. A fiat spring 6 bears y on the gear 9, below, to similarly control the lower spool during the re-winding. This fiat spring is allowed to bear constantly, but the shoe 10b, above, is controlled so as to be released from engagement with the sheave 10n during thevre-winding, aus will presently be explained.

. `For driving `the 'mechanism, either in playing or re-Windnig, a'disk 11 '1s mounted' on a shaft 12 journaled transversely in. the stationary bracket 13, which may be fixed on the structure of the instrument in which the mechanism is used, as may also the frame 5 that supports the spools. A pulley 14 is xed on the shaft 12, and a'belt 15 passes therearound and around'the pulley 16 of a ino-tor. As shown, for sake of simplicity, thisl motor has another pulley 17 that dri'es suitable bellows 18 for exhausting air from a chest 19, thro-ugh a pipe 20. This simple arrangement may represent any suitable pneumatic apparatus of a lmusical instrument, and is suflicient for illustrating the details kof my invention, as, they are to be described. i

Mounted on the stationary bracket 13, on a longitudinal stud 13a fixed in the bracket, is a tiltable bracket 21, held on the stud 13a by a collar 13a. This mounting is best shown in Fig. 6. This bracket has two main uprights 21a and 2lb, suppo-rting the main friction wheel 22 at one side of the disk 11,v and it has a third upright 21c which supports the re-winding friction-wheel 23 at the other side of said disk. The bracket, on tilting, with the stud 13a as a pivot, will' bring one or the other of the friction- wheels 22 and 23 into engagement with the adjacent face of the disk.

Referring again to Fig. 6, the main friction wheel 22 is journaled on a stud 22a ixed in the upright 21, and extending about half the distance to the other upright 211. A square shaft 221 has a reduced part 22" journaled in a bore 22a in the free end of the stud 22, and this square shaft has another reduced part 22" `journaled in the other upright 21". The friction-wheel 22 has an elongated hub, which has a circular opening throughout, so that said wheel ,can slide the full exposed length of said stud 22a and turn thereon as it slides. To cause it to turn with the square shaft, which also enters the circular bore of the wheel-hub, a cap 22c is screwed onto the end of the hub, with a square hole that accurately engages with the square shaft and slides therealong. Thus, it will be seen that the friction-Wheel 22 may engage with the face of the disk 11 throughout a considerable part of the radius of the disk, and the speed at which the friction-wheel is rotated by the disk will vary according to the 'position of the engagement. By sliding the friction-wheel at a given speed along its bearings, the speed of the friction-wheel may vary gradually, in exact accordance with its sliding. Aconnecting shaft 24 has a universal joint 24 with the square shaft 22, and has another universal joint 24h with a small spur pinion 25 that is adapted to mesh with the spur gear 9 of the lower spool mechawill be described presently.'

The re-windlng traction-wheel 23, best seen in Fig. 2, is simply mounted on a stud 23 in the third upright 2l, the wheel hav ing an amply long hub to att'ord it a proper bearing on its stud, upon which it turns loosely, having suitable means to limit end play, not deemed necessary of detailed illustration herein. No longitudinal movement of this re-winding wheel is needed, it being merely mounted near the periphery of the disk ll to impart to it the highest speed the disk aLf'liords, since the re-winding is to be performed in as short time as practicable, without concern as to the uniformity of speed of travel of the sheet upwardly. It will, of course, be understood that the musicproducing mechanism is disconnected during the re-winding, as is well known to those skilled in the musical mechanism art.

A connecting shaft 26 has a universal joint 26 with the hub oi. the wheel 23, and has another universal joint 2Gb with a spur pinion 27 that is adapted to mesh with the spur gear l0 of the upper Yspool mechanism. This pinion 27 along with the before-'men- `tioned pinion 25, is jturnaled in a slidable bracket 28, best seen in Fig. 9, each pinion being fixed o-n a short shaft 27n or 25, to which the universal joints 26b and 24" are fixed, respectively. This bracket 28 slides vertically in guides 28*l on the plate 7, being held therein by screws 28 taking through slots in the bracket. Vhen the bracket slides down, the pinion 25 meshes with the gear 9, to drive the lower spool; and `when the bracket slides up, the pinion 27 meshes with the gear'lO, to drive the upper` or rewinding spool. l/Vhen either pinion meshes the other unmeshes. vAs shown, the ratio between the lower gear and pinion is much greater than that between the upper gear and pinion; this provides the requisite slowness ot playing' travel of the sheet, and the needed speed of re-winding travel, in'I addition to the provisions for the ratio of the main friction-wheel and of the re-winding friction-wheel, respectively, to the disk Ill.

In meshing the gears and pinions, as just described, it is necessary to provide for the contingency of the teeth of a gear and pin-l ion meeting` end-on, and thus damaging the mechanism before they can slide out of such engagement into their proper meshing'engagementfby the turning of the pinion. I provide for this lby yieldingly engaging the bracket to move it. Thus, the extension 28" on one side of the slidable bracket has a lug 28V, and a vertical slide 29 has a stirrup 292L that receives this lug and engages it with helical springs 29 and 29 above and below respectively. These springs yield enoughto prevent damaging vstrain in the contingency above mentioned, but are firm enough to maintain the gears and pinions in mesh `for performing ytheir/work.

bracket and engaging with the under side of said shoe. The shoe is engaged with the` i sheave by the-pull of a helical spring 10b',

attached to the under side of the shoe by one end and to a lug on the stirrup 2911 of the slide 29 by the other end.

While, as above described, the meshing of the pinions25 and 27 with their respective.

gears-9 and 10 is done by yieldable engagement, the tilting of the tiltable bracket 2l, to engage either of the friction- wheels 22 and 23 with the disk ll is, on the contrary, done by positive engagement, which, however, is made adjustable, so that exactly the right pressure ofeither friction-wheel may be maintained against the disk. complished by a cross-slide 30, with a stirrup 30, at the sides of the opening of which are lugs 30 and 30, in which are set-screws 30C" and 30D', pointingtoward each other acrossI the opening. forms part of the'tiltable bracket 2l, near the periphery of the disk 11, and it has a lug 21W that extends into the opening of the stirrup 30 of the cross-slide 30, to be engaged by one or the other of the set-screws 30;" and 30', accordingly as the frictionwheel 22 or the friction-wheel 23 is to be` engaged with the disk. A slight amount of lost motion will thus be involved, but the important requirement is that these set-screws be so adjusted at alltimes as to provide the required frictional engagement to impart the exact speed of any part of the face of the disk to the periphery of the friction-wheel. Such adjustment also will enable the slight wear of the friction wheels to be compensated, from time to time, although this wear is very slight, and will necessitate quent adjustment.

The friction- wheels 22 and 23 may have their peripheres composed of suitable ber composition, well known in the art of friction transmission. These friction-wheels, with the engaging means above described, are found, in practice, to accurately transmit the motion of the disk, with no perceptible loss of motion. This dependence upon the uniform coperation of the main frictionwheel 22 is an importantfactor in the success of my invention, as will later be made plairt r For shifting the slidable bracket 28 and tilting the tiltable bracket 21 simultaneously,

their respective slides 29 and 30 are provided' with slidable cams 31 and 32, respectively, connected by a strut 33, so that the two cams move a unit. Swivel studs 31 and 32', respectively, are provided on th'e cans to receive the strutl for *proper adjustment, it be- This is ac,-`

no"A fre-f ing held in the studs by set-screws. The slidable cam 31 for shifting the slidable bracket- 2S is mounted in a guide-block 31, which is attached to the plate 7 on the side of the frame 5, by means ofa cleat 311. This guide-block has a cross-slot in which the'vertical slide 29 is accurately guided, the guide-block being mounted with its crossslot vert-ical to receive the vertical slide. This vertical slide has a detent 29D that receives an inclined reduced part of the slidable cam 31. This vinclined reduced part joins the main part of the cam at each end of said reduced part by a straight part. Either one or the other of said straight parts occupies the detent 29", to hold the vertical slide up or down, as the case may be, and the passage of the inclined part through the detentraises or lowers the vertical slide, thus converting the motion of the slidable cam Ainto motion of the vertical slide, at rightangles to the motion of the slidable cam.

The sides of the detent 2,9b are, in their major part, conformed to the straight parts of the cam, to'provide for ample locking en.

gagement withsaid straight parts. Minor parts of said sides, however, are inclined to conform to the inclined part of the cam, thus receiving the wear incident to the shifting. The straight parts of the cam are as long as the vertical slide is in thickness, so that there is some lost motion until .the inclined parts engage. These details are readily seen in E ig. 10. A cover-plate 31c is secured to the guide-block 31, over the cam and the vert-ical slide.

The slidable cam 32 is identical in its construction and mounting with the cam 31, except that the guide-block 32, somewhat modified, is mounted horizontally, on the stationary bracket 13, over the bearing ofA vthe shaft 12. The cross-slide 30 is accurately guided in the cross-slot in the guideblock 32a, and has a detent 30b receiving thereduced vpart of the cam, and acted upon by said cam as has been described in connection with the vertlcal slide 29. The inclined parts of the two cams 31 and 32 are, as shown, oppositely directed, to effect the proper simultaneous operation of the vertical slide and the cross-slide, respectively. The. guide-block 32a has a cover-plate 32.

It is highly desirable that the shifting of the mechanisms from playing to re-winding operationand vice versa be effected auto` matically, in strict accordance with the conditions imposed by the particular sheet being'carried. This is best effected by utilizing a. pneumatically controlled device, actuated, in each instance, by the presence of a slot over an orifice in the tracker board. carry o-ut this by mount-ing on one of the cams, in this instance on thercam 32, a pair of bellows 34 and 35, wit-htheir expansible ends facing each otl'ier, and pivoting a pair of pawls 34a and 35:L respectively on said cam, to be actuated by the respective bellowsI into and out of engagement with a stud 36 on a constantly reciprocating bar 37, vas is best shown in Fig. 3. These bellows and pawls are mounted on the lower side-of the cam 31, which is extended for the purpose,

lthe pivots of the pawls being at the inexpansible ends of the respective bellows and being heavy enough cured to the cani to withstand the somewhat heavy impact from the stud and thus transmit it to the shifting mechanisms. The engaging ends of the pawls are somewhat'con-- cave to counteract any tendency of the pawls to slip away from the st-ud, but the lower edges of said pawls are inclined upwardly from these engaging ends toward the pivots, so that when a pawl comes down, on the expansion of its bellows, and engages this lower edge with the stud 36, no operative engagement will occur here. In such event, the pawl is raised until the stud is reciprocated from under it, and then falls again to have its end engaged by the stud as it returns on its nextreciprocation. Each bellows has two openings to its interioig and 34 and 35 and 35, respectively. Tubes 341 and 351 lead from the openings Set and 35 to the chest 19, in which vacuum is maintained by the bellows 18, before described; and ltubes 34e@ and 35c lead from the openings 34C and 35 to orifices 3&0 and'35c in the trackerboard. The sheet 1 has a perforation 3io,

which is shown in the drawing as being overthe orifice 346'; it will be understood that the sheet 1 shall have another perforation, near the-other end of the sheet, which understood as being wound upon the upper spool Q shown in the drawing, and that this other perforation is near the other side of the sheet, to come over the other orifice 35C when the playing of the piece of music has been completed. As shown, the re-winding has just been completed, and the mechanisms have been shifted to begin the playing operation of the sheet. This device operates by the cessation of the vacuum which was maintained throughout the tube from the vacuum chest, the respective bellows on the cam, and the tube from there to the trackerboard; this cessation occurring as soon as the perforation in the sheet comes over the orifice, admitting atmospheric air to the above described spaces, which air excluded as longl as the imperforate part of the sheet ran over the orifice. The rush of air into the spaces, destroyingthe vacuum, allows the pawl attached to theI bellows to be forced down by the fiat spring 34d or 35,

and rigidly enough sehad been inside the bellows 34,- or 35, as the case may be. Then, the stud 3G engaging with the awl that has dropped, thc mechanisms will be shifted at. once, after which, the perforat-ion leaving the orifice and the imperforate l lation -\With the The major an ywill be raised again.

vmechanism, .which is the l tion, l

Y the` other details, excepting to mention thatv parts of the moving sheet closing the orifice again against atmospheric pressure, the air will' again be exhausted from the spaces, the bellows will again collapse, and the pawl Each pa-wl has a llug 34a or 35a adjacent its pivot, to limit the drop of the pawl. It will be seen that all strain is confined to the pawls, and the bel lows need only perform Athe duty of controlling the positions of the pawls. The springs 34d and 35d may be dispensed with where the pawls are heavy in comparison to the efficacy of the vvacuum maintained; thus, the pawls may drop of their own `weiglit,\aiid the effect of the vacuum need be only to overcome said Weight. The bar 37 is reciprocated by a'pitman 38 on a wrist-pin 39 in the pulley 14, said pitman being also connected to a block 40 rigid on the bar 37 `between the two bearings 37 and 37 of the bar, in the stationary bracket 13 and on the vguide-block 32". The stroke of this bar 37 is such that it equals the required movement 0f the cams 31 and 32 plus the distance between tlie engaging ends of the pawls 34 and 35a minus the diameter of the stud 3G. Thus, when the stud has pushed the cam to the limit of its stroke in either direction it cannot act further in that direction, and the pawl may be raised at leisure, during the return travel of the sheet, either playing or rewinding. In actual practice,'but a small fraction of the time t-hus allowed is required for the vacuum to be restablished and the pawl returned to its raised position. The outer end of the extension of the cam 32 is supported from the strut 33 by a brace 33, the head 33" of which may slide on the stiut to allow the adjustment of the strut as before mentioned. It will be seen that by this combination ofV pneumatic and vmechanical action, the intimacy of relation with the pneumatic action of the sheet is obtained, while the powerful and certain action of the driving mechanism is utilized under the accurate control assured neumatic4 action.

minordetails of the driving and reversing mechanism ofimy invention being described, the compensating crux of the invenand whichdias not been confused with ytheiniain friction-wheel 22 is slidable across the face dft the disk 11, inaylnow ybedescribed with facility, and its relation to the other 4factors clearly demonstrated.

. The'friction-:wheel 22, slidable on its stationaryestud22a 60 and squarefshaft 22,", and turning the latter at such speed a's this wheel derives from contact with the face of the disk, has annular lianges 22d on its hub, and a key 22c fits accurately between these flanges at one side.

4held in a slot 46 by such intimate re- Thisy rotation mayT be repeated until t This key is carried in a head 22,'.inounted on a slide-rod 22, slid-` able in brackets 22g on the upiiglits 2l and 2lb of the tiltable bracket 21.

The main arbor 6, of the lower spool 3, is extended forwardlyand journaled in an arm of a bracket 4l, mounted on the lower part of the frame This arbor G has a worm 42 fixed on it, and this worm meshes with a worinwlieel 43, fixed on a shaft 44 journaled transversely in the bracket 41. On'the end of this shaft 44 is fixed a spiralcam 45, having a spiral groove 45 cut in its face. Another extension of the bracket 4l carries a pivot for a bell-craiik lever 4G, one arm of which extends across the spirally grooved face of the cam 45 and has a stud 46i entering the spiral groove. The other arm of this lever extends up and connects, by a suitable pitinan arrangement 47, to the slide-rod 22 thatcarries the head 22 with the key 22e engaging in the space between the annular fianges 22d on the hub of the friction-wheel 22.

The pitrnan arrangement 47 the pitman-rod 47 47b that is pivoted to the slide-rod 22g 'and depends therefrom, said pitman-rod-being adjustably held therein by avset-screw, allowing the pitman arrangement to be adjusted in length. Furtherlongitiidinal adjustment is provided by mounting the head 22 on theslidefrod 22g by thumb-screws 22 taking through slots in a lower widened part of the head. Thus the head, with its key, and coiiselluently the friction-wheel 22 itself, may be adjusted longitudinally with respect to tli'e slide-rod 22g, and tlie slide-rod may-besimilarly Aadjusted with respect to the 4bell-crank lever 46. The other end 0f the pitman-rod 47a has a head 47( which carries a clamping-stud to be adjustably longitudinally of the arm of the lever 46, near the upper end of said arm. By this means, the movement of the friction-wheel 22 relative to the movement of the stud in the spiral groove 45a may be adjusted. i

The key 22"- in the head 22' is preferably made of hard fiber, so that it will wear rather, than the lflanges22d. This key, as shown, is made equilateral, and mayl'be' re movedfrom its socket in the'head 22 and rotated one-quarter turn, to present a new surface to the flanges 22d-when it has become worn excessively on lthe firstedge ie four edges have been presented for use, and then may be renewed. lA screw 22e passes centrally through the key and throughthe sides of the head, to hold the key in'the socket. l i

It will be noted that the drawings illustrate the mechanism with the winding of the sheet onto the lower spool in its inception. Thus, 4the maximum speed has been' utilized'here, and is gradually diminishing comprises as the travel of the stud outward in the spiral groove 45 causes the friction-wheel 22 to approach the center of the disk 11. rI `he spiral. groove 45a is virtually a modiiication of the volutions of the sheet asit is wound on the spool-modified in that the number of turns of the spiral are reduced from those of the sheet, and the radial displacement which each turn effects is magnified proportionately, with the speed of rotation of the spiral-cam 45 relative. to that of the spool 3, and the ratio between the frictionwheel and the disk, taken into consideration. The reduction of speed from spool to spirall cam by means ot' the worm and worm# .meshingthe pinion that drives the lower spooiand the spiral cam, and disengaging the friction-wheel 2Q from the disk 11, the

' upper spool 2, unwinding the sheet from the lower spoolA 3, will, by driving this lower spool, drive the spiral-cam backward, and the stud will travel radially-inwardv in the spiral groove 45a. This willv return the friction-Wheel 122 to the exact position tor its rengagement with the disk l1, when the re-winding is completed and the playing operation is tov begin again, so that, in thisv position, it will again begin to rotate the lower spool 3 at the proper speed for the correct rendition ofthe music.,

Variations to secure diierences in speed of travel of the sheet may be made with the "various adjustments described, but the constant speed of the sheet will be lnaintained at any adjustment, in the playing operation.

It will be understood that, while I have described in detail the application of my invention to the operation of a. self-playing musical instrument, it also will be understood that it is applicable, with suchv minor modifications as may be found necessary. or

desirable, to variousl other uses, wherever such compensation of driving speed during winding of an element is needed.. Therefore, while I have illustrated and described my specific application of my invention herein in detail, I do not wish to be understood as limiting myselfto the precise dey tails thus set forth; but

YWhat I claim as new and vdesire to secure by Letters Patent is:

1 A In Winding mechanism, in combination with, an element to be.. wound, -a rotatable face, Wheelfrictionally engaging the face whereby the inding of the velement, is et- 'fected by the rotation of the Jface, throughsaid wheel, compensating means, actuated in accordance with the winding of said element, to move said wheel across said face while in engagement therewith and while rotated thereby, and means, actuated through the driving of said element, for disengaging said wheel from said face and reverseiy act-ing upon said element and reversely act-` ing upon said compensating means through said element. A

' 2. In winding mechanism, in combination wit-h an element to be wound, a rotatable face, a wheel rictionally engaging the face 4whereby the winding of the element is effected by the rotation of the face, through said wheel, spiral engaging means rotated in v'accordance with the winding of said element, and connection between said spiral enf gaging means and said wheel, to move said wheel across said face while in engagement therewith and while rotated thereby.

3. In Winding mechanism, in combination with an element to be wound, rictionally engaging means for driving said element, and volute guiding means actuated in accordance with the winding of said element, to vary the conditions of engagement of the driving means.

4. In winding mechanism, in combination with an element to he wound` frictionaliy engaging means for driving said element, volute guiding means actuated in accordance with the winding of said element-, to vary the conditions of engagement of the driving means, and means 'for disengaging the driving means and driving said element reversely, and thereby acting reversely on said volute guiding means.

5. In winding mechanism, in combination with an element to be wound, frictionally engaging means for driving said element, volute guiding meansl actuated in accordance with the winding of said element, to vary the conditions of engagement of the driving means, means for disengaging the driving means and driving said element reversely, and thereby acting reversely on said volute guiding means, and means whereby said element controls the action of said disengaging and reversing means.

6. In winding mechanism, in combination with an element to be wound, frictionaliy engaging means tor driving said element, volute guiding means and connection therefrom vto said driviing means, whereby the guiding means changes the conditions of frictional engagement of said" driving means, a worm-wheel Awith which the volute guiding means rotates, and a worm turning with the element being wound and in mesh with said wormwheel. K

7. In winding mechanism, in combination lwith an elementI to' be wound, rictionally engaging means for driving said element,

volute guiding means actuated in accordance with the Winding ot' said element, to vary the conditions of engagement of the driving means, and means t'or regulating the degree of variation imparted by said guiding means.

8. In winding mechanism, in combination `with 'an element to be wound, frictionally engaging'means for driving saidA element, volute guiding means actuated in accordance with the Winding of said element, and means for regulating the relative positions ,offsaid driving means and said guiding means.

9. In Winding mechanism, in combination with an element to be Wound, frictionally engaging means 'for driving' said element, volute'gu'iding means actuated 1n accordance with the winding of said element,

meansfor regulating 'the' degreeof jvari ation imparted by said guiding means, and means `for regulating the relative positions of said driving means and said guiding means.'

10. In winding mechanism, in combination with an element to be wound, a rotata ble lface, a friction-wheel engagingthe face and slidable across the face while rotated thereby to drive said element, volute guiding means actuated in accordance with the Winding of said element, connection from said'guiding means to the slidable friction wheel, and means for regulating the length of said connection.

11. In Winding mechanism, in combination with an'element to be wounda rotatable face, a friction-wheel engaging the face and slidable across the face while rotated thereby'to drive said element., volute guiding means actuated in accordance Awith the Windingof said element, a lever actuated by said guiding means, connection from said lever to said slidable friction-wheel, and means for adjusting said connection with respect to said lever, Wherebythe degree roi sliding of said friction-wheel is controlled by -said lever under the guidance of said volute guiding means.

In winding mechanism, incombina- .tion With an element to be Wound, a rotatable face, a frictionwheel engaging the face and slidableacross the face while rotatedthereby to drive said element, volute guiding means actuated in accordance with thewinding ot' said element, a Ilever actuated by said guiding means, connection .from saidI ,leverY to ysaid slidable friction Wheeh/means for adjusting said connection with respect to said lever, whereby thedegree ot shding et sald friction wheel is controlled by said lever under the guidance of said volute guiding means, and means for adjusting said connection whereby the relative positions of said friction-wheel lated.

I3. In Winding mechanism, in lcombinaand said lever are regu-C .Justa'hle tion with an element to be wound, a rotatable tace. a friction-wheel engaging the tace and slidabl across the iace while rotated thereby to drive lsaid element, volute guiding means actuated in accordance with the winding of `said element, a bell-c 'ank lever actuated through one ot' its arms by said volute guiding means, a slide-rod adjacent said friction wheel. a head longitudinally adjustable on the slide rod and means whereby said head slides 'said friction-wheel, a pitinan pivotally and longitudinally adjustably connected to said slide-rod,`and clamping means on said pitman, said bell-crank lever having a radial slot in its other arm, in which said clamping means engages and adjustably and pivotally connects said pitman to said arm, for the purposes set forth.

14. .ln winding mechanism, in comhinatien lwith an element to be wound, a rotatable tace, a friction wheel engaging' the face, an elongated hub on the friction wheel hav- .ing a bore of circular cross-section throughout itsI length, a stud of circular cross section received in said bore, a shaft ot angular cross-section also received in said bore and meeting and being supported by said stud therein, connection hetweensad shaft and the clement to be wound, whereby the clement is driven, anda cap on thc end ot' the elongated hub ot thc friction-wheel having an opening fitting on said shaft whereby said friction wheel is turned with the shaft but may slide therealong and along said` stud, and may have its main bearing on said stud, said triction-wheel being thus adapted to slide under the guidance ot' means actuated in accordance with the winding of said element.

l5. In winding mechanism, in combination with an element to be wound, and with conipensating means actuated in accordai'ice with the windingot' saidelemcnh'a .rotatabiefacc, a frictionwvheel slidably mounted to rotate with the Ataceby engagement there- Iwith butto` move across s aidfacc, a lhub on engaging between saidtianges, whereby said head slides saidwheel asmoved by the compensating means, said key being ad! in said head to present. tlitt'erent parts of its surface between said tiangcs, for the purposes set rforth. 1 1,

lo. .ln winding` mechanism` in comhination with anelelncnt to be wound, and with compensating means actuated in accordaiue with the A.winding of sai ble'tace, a friction-wheel slidahly mounted to rotate with the t'ace by engagement therewith but to move across said tace, a Stud on which said wheel is journaled and is longit-urflinally lslidable, and a shaft on which said wheel is.longitudinally slidahlebut d element, a rotatawhereby it is rotated in accordance with the winding of said element, for the purposes set forth.

18. In winding mechanism, spools, an element Wound from either spool to theV other, a rotatable face, a friction-wheel engageable with said face to be rotated thereby but to move across said face, connection from said friction wheel to one of said spools allowing said movement across said face, volute guiding means rotated in accordance with the rotation of said one of said spools, and connection from said guiding means to said friction wheel, moving it across said tacebut allowing it t'o rotate with the face.

19. In winding mechanism, spools, an element wound from either spool to the other,'a rotatable face, a friction-wheel engageable with said face, a stud on which the frictionwheel rotates but is slidablev to move across said face, a shaft on which the 'friction- -n'heel is also slidable but which rotates with the friction-Wheel, connection from said shaft to one ot said spools, aspiralcam, a worm-wheel with which the cam rotates, a worm meshing with the worm-wheel and rotating with said one of said spools, a lever, a stud on the lever engaging with the spiral cam, a head engaging said friction-wheel to slide it but to all-ow it to rotate, .guiding means tor said head, and connection between said head and said lever,rfor the purposes set forth.

9.0. In winding mechanism, spools, an element wound from either spool to the other,

frictional Yengaging means l`'with variable driving connection'to one of said spools, compensating means actuated in accordance with the driving of said one of said spools, frictional engaging means with driving connection with the other spool, means for alternating the different frictional engaging means, and connection between said compensating means and the rictional-engaging means that has variable driving connection, said compensating means being actu ated reversely during the action of said frietional engaging means driving said other spool, through said element being wound.

21. In winding mechanism, in com ination with an element to be wound, driving means for the element alternately friction ally engageable to drive said element in one directionor the other, and intermeshng 001i-,

necting means between the driving means and the element, alternately engageablesimultaneously with the alternate frictional engagement, for the purposes set fort-h. l

22. In winding mechanism, in combination with an element to be wound, driving means for the element alternately friction ally engageable to drive said element in one direction or the other, alternately engageable intermeshin-g connecting means between the driving means and the element, means for positively engaging the 'rictionally engageable means, and means for yieldably engaginc` the intermshing means.

23. *In winding mechanism, in combination with' an element to be wound, driving means for the element alternately frictionally engageable to drive said element in one direction or the other, intermeshing connecting means between the driving means and the element, alternately engageable simultaneously with the alternate friet-iena] engage?. ment, means for positively engaging the frictionally engageable means, and means` for 'yieldably engagingV the intermeshing means.

24. In winding mechanism, in combina@ tion withhan element to be wound, driving means for the element alternately frictionally engageable to drive said element in one direction or the other, alternately engage.

able intermeshing connecting means to the element, and articulated connection between the intermeshing connecting means and the frictionally cngageable means.

Q5. In winding mechanism, in combination with an element to be wound, driving means and connecting means from the driving means to the element, each of said means .being shiftable at an angle to the other toal.

ternately drive said element in one direction or the other, and articulated connection be tween the driving means and the connecting means. for the .purposes set forth.

26. In winding mechanism, in combination with an elementto be wound, driving means and connecting means from the driving means to the element, both of said meansy being alternately operative simultaneously;

to drive said element in one direction or the other, and compensating means, actuated through the winding of said element during thevdriving in either direction, and vvarying the conditions of operation of the driving means. or returning said driving means through the variations, accordingly as it is actuated through the winding of said,l element in one direction or the other.

27. In winding mechanism, in combinanl i tion with an element to be wound, driving means and connecting means from the driv` mg means to the element, both of said r'neans being operative sinmiltanecmsly` to drive said element in one direction or the other, and compensating means, varying said driving wheels and said element Wherebyeach will.

drittethe element in an opposite direction. y

29. In winding mechanism, in combination with fan elementto be wound, a stationary-bracket, a rotatable driving element mounted therein, a-tiltable bracket, enga ing meanscarredby the-tiltable bracket a ternately engaged with the driving element as the bracket is tilted in one vdirection or the other, and connection between-'said en agin meansv and said element 4whereby eac Wi drive the element in an opposite direction.

" 30. In winding mechanism, in combina'- tion with an element to be wound, a stationary bracket, a rotatable driving element mounted thereina tiltable bracket, engaging means carried by the tiltable bracket alternately engaged with the-driving .element as the bracket is tilted in' one direction or the other, a slidable bracket, and'connection from the res ective engaging means ,on the tiltable bra et, carried by said slidable bracket and alternately engaged simultane onsly with., thealterna'te engagement of said engaging means, by the sliding of' said bracket, to drive said element in one. direction or the other, for the purposes set forth. i

31. In winding mechanism, yin combina?v i tion with an element to be wound, a stationary bracket, a rotatable driving disk mounted therein, atiltable bracket, 4enga g means carried by the tiltable bracket ald-ii'- nately engaged with the driving disk as the bracket is tilted in one direction or the other, a slldable bracket, connection from the 4respective engaging means on the tiltable bracket alternately engaged to drive said ele# ment in one direction or the other, bythesliding of said bracket, and connection be,- twee-n said tiltable bracket and said slidable bracket whereby they yare moved simultan"- ously, for the purposes set forth.

32. ln winding mechanism, in combination with an element to be wound, ag stationarv bracket,- a rotatable drivingA disk mounted therein, a tiltable bracket, friction wheels rotatably mounted on, the tiltable bracket and alternately engageable with said driving disk as the bracket is tilted in one direction or the otheiga slidable bracket, in, termesliing connecting means to saidelement, carried by said slidable bracket and alternately intermeshed `to drive said 'clement one way or the other as the bracket is shifted, articulated connections between the friction-wheels and the respective intermeshing means, and connection between the tiltable. bracket. and` the slidable bracket whereby they aremoved simultaneously, for the purposes set forth.

33. `In winding mechanism, in combinaing means,frictionallyngageable means to alternately engage with said driving means, and inter-meshing marmitte alternately connect with-saidrelement, articulated connections between-res yctive ones of the fric; tionallyy engageab e means,v and the intermeshing '-means,l andmeans for 'alternately engagingand intermeshingthe thus connected means-,to 'drive said element in one direc i 319.111 winding mechanism,'in combina tion -with an element to'be wound, and driving means, -frictionally engageablemeans to alternately engage with said driving means, intermeshin means to alternately connect with saifie ement, articulated 'connections between respective ones of the frictionally engageable means and 'the intermeshing intermeshing' the thus connected means, one of the frictionally engagcable means being capable of variation in its frictional engagement, and. compensating means, actuated in accordance with the winding of said element, connected to said variable frictionally enor the other as the respectiveengagmg and intermeshing means arel engaged and interactuated in either direction, in accordance with the driving of said element, for the ypurposes set forth. y

35..,In winding mechanism, in combinationv with an elementl to be wound, alter- `nately frictionally engageable driving means, one of `whichtinay be varied in its .frictional engagement, meansy whereby either driving means is connected with said element dil'rectly only when' it is engaged for driving, each-drivlng means driving the element in opposite direction, and compensating means, actuated in' accordance with the winding of said element under the driving action of said variable driving means, and connected to this driving means to vary it, said compensating means being reverselyl actuated when said element is driven by the other the purposes set forth.

.136. In windingmechanism, in combination with an element to be wound, alten natelv enagageable driving means therefor,

shifting means to alternately engage said driving means,` and controlling means for tion withanelement' to be Wound, and driv.

tion'or the othexg'for the purposes set'forth..

meshed, and said compensating` means beingA means, means for alternately engaging and gageable means, to vary said engagement, said element being driven in one direction driving means in an opposite direction, for' a re-Winding spool, arbors for the respective spools, spur gears iXd on the respective arbors, a sheave turning with the rewinding arbor, a shoe bearing on the sheave, a slidable bracket mounted between the arbore, shafts journaled in the'bracket and'pinions on the'respective shafts to alternately mesh with the gears onv the respective arbors as the bracket is shifted, a spuron said bracket to engage with the shoe and disengage it from the sheave on there-Winding arbor when the pinion meshes with t-he gear en said re-winding arbor, and a spring connected to said shoe to engage it With said sheave.

39, In Winding mechanism, a main spool, are-Winding spool, a `frame, yieldable bearings for the spools in the frame, a main arbor for the main spool, a re-Winding arbor for the re-winding spool, means for engagement and disengagement of said spools with their respective arbors as permitted by their yieldable bearings, and Whemby said spools are, rotated by said arbore, said rca-Winding arbor having a central bore, and a pin screwed into said arbor through said bore, engaging to adjust said re-Windingspool axially.

In testimony whereof i have signed my irame to this specification in the presence of two subscribing Witnesses.

FREDERICK W. HEMPELMAN.

Nit ,esses CLARENCE PERDEW,

JAMEs A. BALDWIN.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of atent's,

` Washngton, D. G.

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