US1385185A - Machine for marking perforated music-rolls - Google Patents

Description

P. J. MEAHL.

MACHINE FOR MARKING PERFOHATED MUSIC ROLLS.

APPLICATION FILED AUG.24, 1920.

4 SHEETS-SHEET I.

Patented July 19, 1921.

P. J. MEAHL.

MACHINE FOR MARKING PERFORATED MUSIC ROLLS.

APPLICATION FILED AUG.24,1920.

1,385, 185. v Patented July 19, 1921.

4 SHEETS-SHEET 2.

Inventor: Pm/lp y. Mca/rl.

Atty

P. J. MEAHL.

MACHINE FOR MARKING PERFORATED MUSIC ROLLS.

APPLICATION FILED Aue.24, 1920.

, 1,335, 5, Patented July 19,1921.

4 SHEETS-SHEET 3- In Ven tor: Ph/Y/p J. M a

by W

P. J. MEAHL.

MACHINE FOR MARKING PERFORATED MUSIC ROLLS.

APPLICATION FILED AUG-24, 1920.

est:

NM NM UNITED STATES PATENT OFFICE.

PHILIP J. MEAHL, OF SUMMIT, NEW ERSEY.

MACHINE FOR MARKING PERFORATED MUSIC-ROLLS.

Application filed August 24, 1920. Serial No. 405,614.

To all whom it may concern:

Be it known that I, PHILIP J. MEAHL, a citizen of the United States, residing at Summit, in the county of Union and State of New Jersey, have invented certain new and useful Improvements in Machines for Marking Perforated Music-Rolls, of which the following is a specification.

This invention relates to a machine for marking perforated music-rolls such as are used in automatic or semiautomatic music playing devices and more particularly in reproductions of song music.

The object of this invention is to provide a machine capable of presenting a successive line of characters which will register with the perforations of a music sheet, and properly print the characters at predetermined points upon the margin of said sheet.

A further object of this invention is to provide a construction by which the printing mechanism may be set to operate for a predetermined length of music sheet, and thereafter automatically stop and reset itself for further operation.

A still further object of this invention is to provide a removable type drum which will make the setting of type plugs a comparatively easy operation.

The invention consists in the structural features and combinations of parts hereinafter fully described with reference to the accompanying drawing, wherein- Figure 1 is a side elevational view of my improved marking machine showing the drum in its normal position.

Fig. 2 is an end elevational view of the machine.

Fig. 3 is an end elevational view of the end opposite that shown in Fig. 2.

Fig. 4 is a vertical sectional view on the line 4-4 of Fig. 2.

Fig. 5 is a plan view of the beginning of a music roll sheet showing the starting or setting line marked thereon.

Referring to the drawings a supporting standard 10 is provided with an enlarged flanged surface at its upper end adapted to receive the base of a bearing frame or bracket 11. The bracket 11 is formed in two parts, the connecting flanges of which are provided with arcuate bearing surfaces 12, and when the upper portion 13 of the frame 11 is superposed on the lower frame a complete bearing will result at their junction.

. The upper ends of the frame 13 are connected by a horizontally extending cylindrical arm portion 14 one end of which protrudes considerably beyond the main portion of the frame 13.

The extended portion or arm 14 of the frame 13 is provided with an axial bore 15 adapted to receive a removable supporting rod 16 provided with an enlarged spacing portion 16 forming a shoulder adapted to seat against the end of the arm 14. The outer end of said arm 16 is reduced to enter an opening in a vertical bearing arm 17 depending therefrom. A conical recess 18 formed in the lower end of the bearing arm 17 is designed to be in axial alinement with the bearings 12. A horizontal hollow spindle 19 has one end mounted in the bearings 12 and is provided at its other end with a plug 20 having an outwardly extending conical projection adapted to bear in the recess 18. This method of mounting the spindle 19 provides a substantial support for the latter and presents a bearing well adapted to take care of any end thrust with the least amount of friction. Set screws 21 entering the arm 14 are employed to lock the rod 16 against longitudinal displacement when the latter is once set in place.

Mounted to rotate with the projecting portion of the spindle 19 is the type carrier preferably formed as a printing drum 22 having a peripheral spirally disposed groove or recess 23 extending substantially the entire length of the drum. The opposite lateral walls of the groove 23 are undercut and adapted to receive slugs 24 preferably formed of a bar having the type syllable or character formed thereon. It will be understood that these characters may consist of one or more letters or figures. The outer side of the drum 22 is provided with a circular disk 25 movably secured to the web spoke of said drum which is provided with horizontally extending bolts 22 adapted to protrude through concentric slots 2 a in the disk 25 and adapted to be locked together by means of nuts capable of being tightened against the disk 25. The disk 25 is provided with an outwardly projecting collar encircling the spindle 19, and said disk is also provided with a radially disposed locking pin 26projecting through an opening in the collar of disk 25 and through a longitudinal slot 27 formed in the wall of the spindle 19, said, slot extending from a point adjacent the outer end of the spindle to a point though receiving its rotary motion from the spindle 19, as more fully hereinafter clescribed, will also reciprocate longitudinally thereon by means of its'pin connection with the rod 28.

An elongated opening 29 formed in the enlarged end 28 of the rod 28 is provided with a rack 29 cut in the upper edge of the opening. A. bracket3O secured to the end of the frame 11 supports the end 23 and also provides abearing for one end of a countershaft 32 which extends through theopening 29*; A pinion 31 mounted on the shaft 32 and located in the opening 29 is adapted to. mesh with the rack 29 Adjacent the bracket support3O and mounted on the shaft 32 is a winding drum 33 and a bevel gear 34,

the latter of which is adapted-to mesh with a bevel pinion 34 keyed to the end of the spindle l9. A,second bearing support 35 supports the other end of the shaft 32, which -projects slightly beyond the bearing and carries a hand wheel 36. Secured to the winding drum 33 is one end of a cable 37 carrying at its other end a weight 38, This particular feature will be referred to here inafter as the automatic drum resetting mechanism,

' Intermediate the upright columns of the frames 11 and 13 and loosely mounted on the spindle 19 is a drive worm gear 39 constantlyrotated by a worm 40 carried by a motor shaft 41 the motor having been omitted from the drawings as it forms no part of the present mechanism, as any suitable driv ing means may be employed provided the The wall ofthe worm gear 39 is provided with circularly arranged clutch teeth 42 adapted to be engaged by similar teeth 43 forming part of a movablyzm'ounted clutch member 44.

A key 45 seated in the periphery of the spindle 19 provides a guide over which the clutch 44 may be axially moved and at the same time cause the latter to transmit its rotary motion-to the hollow spindle 19. The

[engagement and disengagement of the clutch member 44 is manually eliected by a rod 46 slidably mounted in guides projecting from the side of the arm 14 and having a bent end portion 47 adaptedto enter an opening in the upper end of a pivoted lever 48. The lower end of said lever is pivoted in the forked endof a bracket 49 forming part of the intermediate bearing block 12. A

peripheral groove 50 in the outer surface of the clutch 44 is embraced by the intermediate annular portion of the lever 43 located slightly above its pivot. It will be noted that by an axial movement of the hand rod 46 the lever may be rocked thereby causing the clutch 44 moving therewith to be engaged or disengaged as the case may be. In order that the disengagement of the clutch 44 may be automatic and sin'mltaneous with the completion of the printing, a mechanism is provided whereby the clutch 44 is thrown out of engagement at a predetermined point in the travel of the drum 22. The length of the music sheet to be printed naturally determines the setting point at which the. clutch is to be disengaged, and in order that successive sheets may be fed the resetting of the mechanism hereinbe'tore described follows the disengagement of the clutch. Keyed to the spindle 19, and therefore rotatable therewith, is a clutch throw-oil": cylindrical sleeve 51 confined between the outer hearing blocks 12 of the frames 1.1 and 12% A con necting veb 52 forming a, part of the support 13 and the upper portion of the hearing block 12, is provided with a longitudinally extending slot'53 the vertical axis of which is perpendicular to the axis of said bearings. The slot acconnnodates a movable trip dog 54 adapted to protrude above said slot in which it is guided, and having its lower end reduced to be engaged by a spirally cut groove or recess extending the entire length of the clutch throw-oil? cylinder 51. Said groove is characterized by having its starting end closed to afford a set against which the trip dog 54 is a dapted to seat when in starting position. A slotted guide 56 supported by the web 52 is adapted to receive and guide an arm 57 one end of which is pivoted to the clutch eontrolling arm 48 at a point slightly above the clutch proper 44. The arm 57 is providm at, its free end with a series of holes 58 similar in number to the grooves and adapted to hold a cam toe 59 which depends upon said arm and lies directly in the path of the traveling dog 54. Said arm is also provided with a catch 60 in the form of a depending lug adapted to engage the lower edge of the guide 56 and hold the clutch in engaged position as clearl shown in hi 4. A flat spring 57 riveted to the outer side of the arm 48, slightly above the pivot ot the arm 57, is adapted to exert a yieldable pressure upon the arm 57 whereby said lug 60 may be normally held engaged. It coiled spring 48 one end fixed to the frame 13 and other to the upper part of the arm 48 tends to separate the clutch lilQilllldl'nl,

The inking mechanism is located at the receiving side of the machine and it will be understood that there are several methods printing surface, but in practice I have found the ink applying unit shown in the drawings to be most efficient. Suitable supporting brackets 61 are secured to the receiving side of the machine, and are adapted to support an ink font 62 having an ink roller and doctor roll confined between its end walls. A shaft 63 is mounted in the font and provided with a gear 63 at one end thereof adapted to be rotated by a gear 64 having a sprocket 65 secured thereto and an endless chain 66 driving said sprocket. The other loop of said chain is engaged about a larger sprocket 67 loosely mounted on a horizontal shaft 68 mounted in the upper portion of the bracket 61. The sprocket 67 carries a pair of oppositely arranged spring pressed dogs 69 on its face adapted to be engaged by a ratchet wheel 70 keyed to the shaft 68 adjacent the s rocket 67. A spur pinion 71 is fixed to the shaft 68 and adapted to mesh with a driving gear 72, mounted on the spindle 19. The driving gear 72 is keyed to the spindle 1.9 and therefore operates only when the engaging clutch is causing the operation of the other movable parts. An oscillatory arm 73 journaled on the inking roller shaft, is provided with oppositely extending arms one of which supports the ink transfer roll 74, which may be rotated by a gear 75 fixed to its shaft and adapted to mesh with the gear 63. The other or outer end of said arm 73 is acted upon by the downward pressure of a coiled spring 76 securedat one end to a lug on the side of said fountain 62. A set screw 7 6 movable in a lug fixed at the bottom edge of said fountain is adapted to contact with the underside of the arm 73 to determine the exact setting point of the transfer roller 74 in relation to the printing surface of the cylinder 22. The withdrawing of the transfer roller and compression of the spring 76, as the arm 73 rocks about its pivot, iscontrolled by a vertical link 77 connected at its upper end to the axle of the transfer roller and at its lower end to the free end of the transverse compression roller arm 78. Said arm 78 is pivoted at its opposite end at a point adjacent the delivery side of the machine and is provided with an upwardly extending forked bearing 79 designed to support an impression roller 80 therebetween. The ver tical axis'of the bearings 79 and the roller 80'when in operation is in direct vertical alinement with the horizontal axis of spindle- 1.9 and drum 22, and it will be noted that the impression roller may be moved toward or away fromthe drum 22 by the arcuate movement of said arm 78. It has been found desirable to remove the pressure of the impression roller simultaneously with the throw out of the clutch, which isautomatically accomplished by the crank arm 81 the free end of which loosely embraces the arm 78 slightly in advance of the compression roller 80. The other end of said crank arm 81 is mounted upon a horizontal rock shaft 82 extending substantially the entire length of the machine and mounted in bearings formed in the walls of the standard 10. Opposed set screws 83 carried by fixed brackets above and below the arm 78 limit the arcuate movement which may be imparted to said arm. The clutch operating arm &8 is provided with a downwardly extending offset extension 48 below the pivot of said arm and connected to a crank arm 84 by a depending vertical link 85. The crank arm 84 is fixed to the rock shaft 82 and it will be noted that when the clutch is thrown out or in, a relative movement will be imparted to the link 85 whichin turn will, throu h its connection with the shaft 82, cause t e latter to rock, thereby raising or lowering the impression roller 80.

The paper feeding mechanism is located at the opposite side of the machine to that of the inking device and has a tendency to pull the paper transversely through the printing mechanism as hereinafter described. A supporting frame 86 secured to and projecting from the outer side of the standard 10 and frame 11 forms a guide for the movement of the paper A while the latter is being acted upon by the printing device. In order that the paper may be held away from the printing surface of drum 22, when the impression roller 80 has been withdrawn, I provide two horizontally ex tending parallel rods 87 located on opposite sides of the contacting point of the drum and impression roller, and on a plane which will hold the paper A down away from the surface of the drum 22. The paper is fed from a feeding table B transversely across the machine in the direction of the arrow and beneath the forward rod 87, over the impression roller 80 and against beneath the other rod 87. These rods 87are sustained in vertical plates forming a part of the extension frame 86.

The paper feed winding or pulling roller 88 having a rubber covered surface, is mounted in bearings supported in brackets 89 projecting outwardly from the walls of the frames 11 and 86 to which said brackets are secured. A depression 88 surround ing the rubber covered roller 88 is adapted to prevent contact of the wet inked surface of printed music sheet as the latter is fed through the machine, thus preventing the possibility of smearing the wet ink. A train of gears 90, one of which is mounted on the outer end of the pulling roller shaft 91., receives its rotary motion through an intermediate gear in mesh with the driving gear 72 before referred to. The gears 90 are of such pitch diameter that the rotary motion imparted to the pulling roller will equal in peripheral speed that of the drum 22. A tensioning grip roller 92 is carried by pivoted parallel arms 93 journaled in extensionsof the brackets 89. The roller 92 is held under tension at about 135 beyond the point where thepaper is received by the roller 88 thereby permitting the paper to be exposed to the maximum frictional surface on said roller required to draw the paper through and at the same time evenly distribute the Strain upon the paper. This is an important feature of the invention due to the fact that the paper has already been perforated throughout its length and is'thus more easily broken or ruptured. The tensioning device; whereby the roller 92 is yieldably held against the gripping surface roller 88 consists of movable rods 94 extending obliquely toward the axis of the roller 88'through guides projecting from the sides=of an extension '95 forming part of the supporting brackets 89. A compression spring 96 surrounds the rod 94, and is confined between the inner side of the upper guide and a fixed collar 97 carried by the rod 94:, the function of said spring being to normally'force the roller 92 toward the roller 88 or against the paper traveling therebetween. The paper A leaves the roller 88 and roves about the roller 92 and then to the spools upon which it is Zfinally Wound.

Before proceeding to a detailed description of the operation of the several parts of the machine, it may be stated at this time that forthe purpose. of printing the Successive words or syllables on the music roll or paper sheet, the cylinder 22 is given not only a rotary motion to print the several characters contained on the slugs 24 held in the spiral groove 23, but is also given an axial or lengthwise movementto permit the characters to be successively presented above the impression roller at which time the impressions are made upon the-sheet A.

In the operation of the device the slugs 24 are inserted in positionabout the spiral groove 23 so that when printing impressions are upon the margin of the musicroll the several characters will register with the corresponding note perforations."Tlie setting of the type in the printing drum 22 may be accomplished in several ways and is usually done in the way most convenient to the slug setter. It will be understood that slugs are preferably set while the drum is free from the machine proper. To remove the drum from the machine for the slug or type setting operation the set screws 21 are loosened and the supporting arm 16 withdrawn to permit the disengagement of the conical bearing from the recess 18 whereupon the arm 17 may be swung. upwardly and held by tightening down one of the set screws 21. Vith access to the spindle 19 made possible, the hub of the drum 22 is slid over the hollow spindle 19 until the latter seats against the forward bearing 12 of the frame 11. The locking pin 26, having been removed when the drum 22 was removed, is again permitted to project through its guides on the disk 25, and upon entering the slot 27 in the spindle 19, its threaded end portion is adapted to register with a tapped opening in the movable sleeve carried by the sliding head 29. The drum 22 is then securely locked in place and the paper A made ready to be threaded. The starting end of a music roll. as shown in Fig. 5 must be provided with a starting or setting line shown at C adapted to be brought into register with a line upon the side of thedrum 22 shown at c. The distance fromthe line C on the paper to the first note perforations having a word character: must be equal to the peripheral distance between the mark 0, on the drum 22 and the first character slug 24;. The line 0 must, of course, be far enough from. the end of the paper sheet to permit the threading of the paper beneath the cross rods ST, around the rubber covered roller 82% and roller 92. In order to bring the mark c upon the drum- 22 into register with the line C of the paper the clamping nuts carried by the bolts 27 are loosened and the drum 22 carrying said bolts, may be rotated within the limits of the segmental slots 25, through which. the bolts 27 protrude. The nuts are again tightened and the machine is ready for printing any number of rolls of the same-title. It will also be understood that the peripheral surface of the groove 23 utilized for printing- :1 roll. of music, must be equal to the distance between the first syllable of the first word and. the last syllable of the last word required in completing a song. 'llhmelorc, should only four grooves, for example, be required the automatic throw-oil cam too 59 may be inserted in the fourth hole 58 from the pivoted end of the arm 57.

The machine is brought into operation by pulling out the hand rod 4-6 and rocking the clutch lever d8 and clutch d'finto engagement with tho complemental clutch teeth 13 on the constantly driven worm wheel whereupon the spindle 19 and its eoacting parts are brought into motion, and the function of each will be sepzn'ately described in the following. The position of the compression roller upon starting will register with the first slug-containing groove 23. and due to the lead of the spiral groove. the axial movement of the drum 22, will continue to present the succeeding slugs held therein directly above the compressing roller 80, thereby printing the characters one above the other in marginal alinement at the edge of ill) lv l 0 the music roll sheet A, each syllable being readable beside its perforated note. The outward movement of the drum 22 upon the rotating spindle 19 is controlled by the rack 29 and pinion 31, the latter receiving its rotary motion from the bevel gear 34 and driv- 28 and drum 22 will be equal to the lead between the centers of the spiral groove 23. A correspondin longitudinal travel is imparted to the trip dog 54, movably mounted in the guide slot 53, by its engagement with the spiral grooves in the rotating clutch throw-ofi cylinder 51 rotating with the spindle l9. Said dog 54, in its travel, is adapted to raise the toe 59 upon contact therewith, whereupon the sprin 48 will contract and rock the lever 48, iscngaging the clutch member 44 from the drivin worm wheel 34.

The winding drum 33 is rotated by its bevel gear connection with the rotating spindle l9 and during the axial movement of the rotating drum 22 the winding drum 33 rolls up the cable 37 about its periphery and lifts the weight 38 depending therefrom. Thus, when the clutch member 44 is released, in the manner stated above, the rotary movement of the winding drum 33, spindle 19 and drum 22, will be reversed by reason of the then unresisted and always constant tendency of the weight 38 to drop and unwind the cable from the drum This reverse automatically returnthe drum 22 to its normal or starting position.

The impression roller 80 and inking mechanism is *also automatically thrown in and out of contact with the slugs 24 of the drum 22. The lower extension of the clutch lever 48 having rocked and lifted the ink 85, when r 50" start the mechanism, also rocked the shaft 82 the hand rod 46 was pulled outwardly to through its connection with the arm 84. The rocking of the shaft 82 and arm 81 embracingthe lever arm 78, compels the compression roller 80 carried by the latter to press the traveling music paper roll againstthe "inked slugs 24 as the latter are successively presented above the said roller. The oscillation of the transfer roller 74 is controlled by the lever arm 7 8 and therefore when the latter withdraws the com mission roller 8O a similar action is transmitted to the transfer thereby stopping thetransfer of unnecessary ink onto the slugs 24. The reverse movement occurring when the automaticreturn mechanism is in operation does not affect the driving of the inking device, but simply permits the dogs 69 to slip over the inclined surfaces of the ratchet teeth formed on the periphery of the disk 67.

As explained before the feed of the paper or drawing out of the marked perforated music sheet requires a grippingsuriface of considerable area, because the tensile strength of the paper has been greatly impaired by the note perforations. The maximum of grippingsurface presented to the paper reduces the liability of the paper ripping when strained. The paper having passed around the roll 88 is guided off again by the tension roller 92 over which it travels to a spool adapted to have the paper wound thereon.

What I claim is V 1. In a device of the character described, a member adapted to receive printing characters about its periphery, and means for imparting a continuous rotary and transverse movement to said member.

2. In a device of the character described, a grooved cylinder adapted to receive rinting characters in the grooves thereo and means for continuously rotating and axially moving said cylinder.

3. In an apparatus for printing perforated music sheets by means of printing characters, a printing drum having a spiral groove with undercut side walls for the reception of said printing characters, and means for imparting continuous rotary and axial movement to said drum.

4. In a device of the character described,

ment of said drum at a predetermined point. a rotation of the several movable parts will a of the drum, and means for returning said drum to its initial position.

6. In a device of the character described, a drum having a continuous spiral groove for the reception of printing slugs, a spindle axially supporting said drum, an impression roller cooperable with said drum, and means whereby continuous rotary and axial movement may be imparted to said drum, the

axial movement of the latter being equal to the total length of said drum, and means for rotating said drum and axially moving the latter a total distance equal to the length of said drum.

7. In a device of the character described, a printing drum capable of continuous rotary and axial movement, a hollow spindle upon which said drum is mounted, a reciprocatory member within said hollow spindle,

and means for imparting the reciprocatory motionof said member through said hollow Spindle to the rotating drum.

8. In a device of the character described, adrum adapted to receive a series of printing characters spirally about its periphery,

means for continuously rotating and axially movingsaid drum, and an impression roller adapted to cooperate wlth each of said printing characters, the width of said roller being equal to the width of each printing character and roller, and means for continuously and simultaneously rotating and axially moving said drum a predetermined distance, the

axial movement-of the drum during each rotation being equal in distance to the lead of the grooves in the periphery otthe drum. .10.'In an apparatus for printlng perforated music sheets, the combination with a printing element having simultaneous ro-- tary and axial movement, of means for reversing thedlrectlon of the axial movement of the printing element, and means to set said reversing means in operation whereby said printing element may be returned to its initial position.

11. In an apparatus for printing perforated music sheets by means of slugs, the combination with a drum having a continuous spiral groove for the reception of said slugs, not an impression roller cooperable with 'sald drum,- feeding mechanism for transversely moving the sheet in the path of said drum,means for lmpartmg rotary mo- 131011170 the drum, reciprocatory means for presenting the successive line of slugs to said impression roller, and means actuating said impression roller to press a portion of the moving sheet against the drum, the impressions "from the slugs being in marginal alinement upon the sheet.

12. In a device for printing perforated music sheets by means of slugs, the combination with a drum having a spiral groove for the reception of said slugs, of mechanism for rotating and axially moving said, drum, clutch members initiating the movement of said mechanism, a grooved cylinder rotating with said drum, and means projecting into U the groove of said cylinder for stopping the movement ofsaid drum at a predeterminedpoint. I

13.: In a device for printing perforated music sheets by means of insertible slugs,

the combination with a printing drum havmg a spiral groove with undercut side walls for the reception 0]: said slugs, of mechanism for simultaneously rotating and axially moving said drum, clutch members initiating the -movement of said mechanism, a, spirally grooved cylinder rotating with said drum, and means projecting into the groove of said cylinder for stopping movement of said drum at a predetermined point.

14. In a device for printing pertorated music sheets by means of slugs, the comhiuation with a rotatably and axially movable printing drum having a spiral groove 'l'or the reception oi: the slugs, of" clutch mechanism initiating the movement of said drum, a cylinder movable with said drum and having a spiral groove therein, adjustable trip mechanism projecting into said groove in the cylinder for stopping movement ol said drum, and resetting means whereby the drum may be returned to its initial position.

15. In a device of the character described, a drum having a spiral groove adapted to have printing characters successively arranged in the groove thereof, means for rotating said drum, and means for ouliuuously advancing the drum with each revolution of the latter a distance equal to the lead of the grooves in the periphery of said drum.

16. In an apparatus for printing per'l'orated music sheets by means oi slugs, the combinat1on with a drum having a spiral.

groove for the reception of said slugs, a hollow spindle upon which said drum is removably mounted, said spindle having a slot therein, clutch members movable with said hollow spindle, a reciprocable member within said hollow spindle, and means projecting through said slot connecting said reciprocable member with the drum.

17. In an apparatus for printing per'lorated music sheets by means of slugs, the combination with a drum having a spiral groove for the reception of said slugs, ot a hollow spindle upon which said drum mounted, said spindle having a slot therein,

a reciprocable member within said spindle,

clutch members movable with. said spindle, a coupling pin connecting said reciprocable member with the drum and extending through said slot.

18. In an apparatus for printing perforated music sheets, the combination with a drum having rotary and axial movement, of a hollow spindle upon which said drum is mounted, said spindle having a slot therein, clutch members mounted on said spindle, a reciprocable member within said hollow spindle, a coupling pin connecting said reciprocable member with the drum and extending through said slot, and a rack and pinion mechanism for actuating said reciprocating member.

19. In an apparatus for printing perforated music sheets by means of slugs, the combination with a drum having a spiral groove for the reception of said slugs and means for imparting rotary and axial movement to said drum, of a pivotally mounted impression roller adjustably associated with said drum, a hollow spindle supporting said drum, clutch members mounted on said spindle, a pivoted lever adapted to disengage said clutch members, and reversing mechanism to return said drum to its initial position simultaneously with the disengagement of the clutch members.

20. In an apparatus for printing perforated music sheets, the combination with a drum capable of continuous rotation and transverse movement and having a spiral groove for the reception of slugs, of an imression roller, fee ing mechanism, an ink ountain having an ink roller mounted therein, and a transfer roller adapted to convey ink from the ink roller to the slugs by an oscillatory movement of said transfer roller.

21. In an apparatus for printing perforated music sheets by means of slugs, the combination with a drum capable of rotary and axial movement and having a spiral groove formed in its eriphery, the side Walls of said grooves eing undercut for holding the insertible slugs therein, an impression roller, throw-off mechanism predetermining the axial movement of said drum, the total distance of axial movement for one rotation of the drum being equal to the lead of the spiral groove, and reversing mechanism actuated by the throw-off mechanism whereby the drum is automatically returned to its initial position upon the drum having reached the maximum travel at which the throw-ofi' mechanism is set.

22. In an apparatus for printing perforated music sheets, the combination with a printing drum capable of axial and rotary movement and having slugs spirally arranged about its periphery, of a clutch initiating the movement of said dmm, a winding drum cooperating with the printing drum to Wind a cable having a weight attached thereto, and trip mechanism capable of being set to limit the axial movement of the printing drum by disengaging the clutch.

23. In an apparatus for printing perforated music sheets, the combination of a printing drum having a simultaneous rotary and axial movement, a clutch initiating the rotary and axial movement of said drum, a spirally grooved throw-out cylinder mounted to rotate with said drum, a traveling trip member engaging the spiral groove in said cylinder, the horizontal movement of said trip member being equal to the lead of the groove With each rotation of the cylinder, a pivotally mounted clutch throw-out lever, an arm ivoted to said lever and extending over sai throw-out cylinder and providing a depending adjustable toe adapted to lie in the path of the traveling trip member, whereby the latter may engage the toe to predetermine the distance of axial travel of the drum, a link connection from said lever to the clutch member whereby the latter may be disengaged, and means for resetting the drum to its initial position.

24. In an apparatus for printing perforated music sheets by means of slugs, the combination of a drum having simultaneous rotary and axial movement, a clutch initiating the rotary and axial movement of said drum, a spirally grooved throw-out cylinder mounted to rotate with said drum, a traveling trip member engaging the spiral groove 'in said cylinder, the horizontal movement of said trip member being equal to the lead of the spiral groove in the cylinder with each revolution of the cylinder, a pivotally mounted clutch throw-out lever having yieldable means attached thereto whereby the clutch members are normally held out of engagement, an arm pivoted to said lever and ex tending over said throw-out cylinder and provided with an adjustable toe adapted to lie in the path of said trip member, means for yieldably holding said arm in its position, and means for locking said clutch members in engagemenasaid last named means carried by the arm and disengaged by the traveling trip raising the toe.

25. In an apparatus for printing perforated music sheets by means of slugs, the combination Witha drum having a spiral, groove for the reception of said slugs, of an impression roller cooperable with sald drum, a spindle upon which said drum is mounted, feeding mechanism for moving the sheets transversely in the path of the drum, and means whereby the drum may be independently rotated about the spindle to register the slugs with the perforations in the sheet.

26. In an apparatus for printing perforated music sheets by means of slugs, the combination with a drum having slugs spirally arranged about the periphery thereof, of an impression roller, feeding mechanism, and means whereby the drum may be independently moved to register the first slug with its perforation in the music sheet.

In testimony whereof I have aflixed my signature in presence of two witnesses.

PHILIP J. MEAHL.

Witnesses:

EDWIN LEV'ISOHN, R. B. RICHARDSON.

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