US958318A - Automatic musical instrument. - Google Patents

Description

U. ALRO HRBAGHER.

AUTOMATIC MUSICAL INSTRUMENT.

A PPLIGATION FILED JAN. 14, 1909.

Patented May 17, 1910.

2 SHEETS-SHEET 1.

IN VENTCR. fldmar ATTORNE Y.

O. A. ROHRBAGHER. AUTOMATIC MUSICAL INSTRUMENT.

APPLICATION FILED JANJM, 1909.

Patented May 17, 1910.

2 snnms-s11nm 2.

laz'ueaaeax i Iizue 3&2:

[Labs W nswn resident 0 7 H1913. m am Sta it u ash

W 8 1 I T .n m m mw a 1 C. W 9 n v.1

in means cisz *rmsic list-Q2 m, in

shaft- 50 is clutch 51 having annular groove" 52. and a flange on the right hand end in which is secured engagin pin clutch 51 is movable longitudinally on feather 53. Collar-49 attached to shaft 50, in conjunction with said enlarged left-hand end,- prevents longitudinal movement of said shaft in bearing 9. Shifting lever 26 is fulcrumed in its middle on the bracket 25, which is attached to rail 13. One end of this lever engages in the annular groove 52 in clutch 51 and the other end engages in annular groove 35 in clutch 36 in such manner that the movement of lever 26 to dotted position 26 carries clutch 51 to dotted position 51 and l clutch 36 to dottedposition 36, whether or not said clutches are revclying with their .zontal hearing in bracket 57, ached to back board 1 1, is shaft to the left-hand end of which is attached ed collar 56, having engaging pin 55, 'and tr the right-hand end of said shaft is attach sheave 59. Shaft 58 is so mounted that it is in right line with shaft 50 and when clutch 51 is in its dotted position 51 pin 55 may engage with pin 54 and impart the revolution. of shalt 58 to shaft 50.

in a hor .i' ntal bearin in bracket 48, which is attac to' back board 1 1, is shaft 14.- to the righthand end of which is attached collar A and to the left-hand end of which isattachee sheave e2. right line with shaft 37 and so mounted that lines pin 41 in sheave as may engage with pin 10 in clutch 36,. and the rotation of shaft M be transmitted to shaft 37.

ldounted on bracket 27, which is attached to back board 141, Figs. 1 and e, is piece 29 which may swing about a horizontal screw pin from. stop 31 toward the right. Spring 27 is attached to bracket- 27 and bears against piece 29 tending to holdthe same against stop 31. Dog 30 is hinged in piece 29 by horizontal pin 32. The lower end of bracket 27 serves as a stop to pre vent dog 30 turning about pin 32 farther backward than a vertical pendent position. Spring 28 attached to piece 29 tends to hold dog 80 against said stop. Dog 30 is so placed that it may engage with ratchet flange 34C on clutch. 36 when the same is in engagement with pin 41, and allow counter clock-wise revolution of said clutch, but provent clock-wise revolution of the same. Said dog can-swing one side with piece 29 when said clutch is moved into engagement with said pin. if the teeth of said ratchetchance to strike against said dog, then engage \vith'said ratchet when it has revolved to permit the same.

Electric motor is secured in the bottom oi": the ins-t merit case. Rigidly to the right end end ofits share Shaft 44 is in when clutch 36 is in the position shown in full sheave i? in belting relation with" sheave 'sheaves 18 and 59 and conveys power from motor 4:8 to shaft58. ln'Fig. 1 av portion of each of bolts and 1G is removed and motors 47 and 18 are shown nearer the other mechanism than they are ordinarily in practice. Portions of backboard 1 1 and rails 12 and 13ers not shown for lack of space.

r'lroi'md the middle portion of roll 1 is placed" the wide copper band 15. One end of music strip 3 is glued to this roll in the usual way except that a portion of said end is cut away forming the notch 8, in order to expose said band during at least one turn of said strip on the roll. Brushes 19 and 15), Figs. 1 and 5, are clamped in housings 17 and 18, revoluble on screw pins 17 and 18, screwed in to brackets 1'? and 18 respectively, which are secured to back board 1 1. Housing 18 is counter-weighted by weight 28. Housing 17 is similarly counterweight ed. These brackets are so situated that brushes 19 and 19 may make electric contact with co per band 15 when the music strip is unro ed as shown. But when there are a plurality of turns of the music strip wrapped about roll 1 these layers electrically insulate said brushes from said band and said electric contact is broken. The counterweights 23 retain said brushes in contact with the copper band 15 or permit the brushes. to assume the dotted position illustrated in Fig. 5 when the several turns of the music strip intervene.

On the ends of music roll 2 are the narrow,

copper hands 16 and 16 electrically connected by embedded. wire 16", Figs. 1 and 3.

Brushes 22 and 22 are clamped in housings I 20 and 21, revoluble on screw pins 20' and 21, screwed into brackets 20 and 21", respectively, which are attached to back board 1 1-. Brackets 20' and 21 are so situated that brush 22 may make electrical contact with copperband 16, when the turns oi music strip 3 do not intervene, and brush 22 may at the same time makeelectrical contact with copper band 16. Housings 20 and 21 are counterweighted by weights 24 and 24, respectively so that said brushes are either pressed against said bands or they may turn outward to accommodate the intervening turns of the music strip 3 shown respectively in full and dotted lines in Fig. 3.

The corners of the'free end of music strip.

3 are cut off or turned over to form a tapering end which is reinforced with an eyelet 3 in the usual manner, as shown in Fig. 1.

Will o a p rt-ion of the rolled strip 3 is removed from roll Strip 3 is engaged with roll 2 by putting cycles 3" on hook 8 which 1s fastened into r ll 2. Because of the cut oil corners on the free end of music strip 8,

;by heel piece (it brushes 22 and .22 may make electric con-- tact with bands 16 and 16 while a turns of the strip are yet on the roll. In the illustration in Fig. 1. music strip 3 is shown with its perforated part entirely rolled on roll 2.

Controlling electro- magnets 60 and 61 are constructed as follows :The pair of cores 60 are joined at the rear by heel piece 69, which is attached to bracket 63, which is in turn secured to hack board 14-. Over these cores are the spools of insulated wire 30. The pair of cores (31 are joined at the rear which is attached to ,bracket 62, this bracket being secured to back board 14. Over these cores are the spools of insulated Wire 61. The pairs of cores with connecting heel pieces lie in the same horizontal plane, and the free ends of the pairs of cores are so placed that they face each other and stand a short distance apart. These two electromagnets are supplied with-a single keeper 75. Keeper 75 is hung on swinging arm 7 6, which is pivoted to the upper part of rockerarm (i l on pin 64. Rocker arm 64 is supported on shaft 68 mounted in bracket 68, which is secured to back board 14-. Fig. 2 is a view of a section cut by a medial vertical plane passed between controlling electromagnets and 61 whenrocker arm fi l'occu'pies a vertical position. The ends of keeper are re ceased and. in each of these recesses lies one of the legs of the bifurcated standard of rocker arm 64.

The upper end of swinging arm 76 is bent over to form the stop 76. On the pin (Sel are hinged the two latches 7 8 and 79, these are pressed upward by spring 80, attached to latch 7 8, until lugs 7 and TQKnormally lie against stop 76". On bracket 83, which is attached to back board 14, are the two standards 81 and 82. Standard 81 contains the stop screw 81 which limits the right- Cit hand movement of rocker arm t7. Standard 82 contains the stop screw 82 which limits the left-hand movement of rocker arm 64. Catch 83 is a lateral extension of standard 81, and catch 83 is a lateral extension of standard 82. Catch 83 is so placed that when rocker arm 64 lies against stop screw 82" and keeper 75 is near cores 60, latch 79 is in engagement with catch 83", thus holding 64tagainst stop screw 82. But when keeper 75 is carried over to dot tedposition '55 latch 79 is carried down to dot-ted position 79 and rocker arm 64 is free to, move over against stop screw 81' when latch 78 engages with catch 83, as shown in dotted position at 78, where it is in position to retain 64 against stop screw 81; at this time keeper 75 is in dotted posiper comb '66.

tic-n T5". Similarly 78 is released movement keeper '1 toward the left which permits and 75 to return to the positions illustrated in full lines in l 1. The rocker arm (ii is bifurcated at the lower end and to the rear branch a walking beam 65 is attached. To the right-hand end of is attached copper comb 6! and to the left-hand end of the same is attached coppair of slate mercury-cups sectional elevation at (59, Fig. 1, also in full lines in i ig. 2. They are supported on brackets and '52 to which they are attached by screws that engage with nuts in tue bottom of said cups. Brackets 71 and 72 are attached to back hoard M. Mercury cups 70 are similarly attached to brackets 73 and i l which are secured to the back board. Mercury cups 69 are so located that the prongs of comb 66 dip beneath the mercury in said cups when rocker arm lies against stop screw 82 as shown in full lines. And mercury cups 70 are so located that when rocker arm 64 lies against stop screw 81 the "prongs of comb 6? beneath the surface of he mercury in said cups as hown in the dotted position at 67, meanwhile comb 6.6 is in its dotted position at 56 and out of contact with the mercury in cups 69. A link 7 7 connects rocker arm l with shifting leverfiti in such manner that the described movements of said rocker arm carries said lever 26 to and from its illustrated positions.

Wires G and H from magnet spools 60 are respectively each continuation of wires G and H shown as electrically connected to brackets 20 and 21". Wire G includes the battery 101. lVires E and F from magnet spools 61 are respectively each a continuare shown in tion of wires E and F shown as electrically connected to brackets 18 and 17'. Wire It includes battery 100. Power wires Franc B from motor 4] are respectively cach a con tinuation of wires A and B shown as electrically connected with brackets 72 and 71. Power wires C and D from motor-48 are respectively each a continuation of wires C and D shown as electrically connected with brackets 73 and 74:. i

The shaft 47 of motor 47 is only partly shown. T his shaft is assumed to make proper mechanical connections for operating the mechanism for producing the vacuum used in connection with perforated music strip 3 and tracker board 4. As my invention is not directly connected with this part of the apparatus it is notillustratcd.

The operation of my lll'lln'OVell'lel-lt is as follows: The full. line illustration oi the parts as shown in the d swings indicates a stage in the operations when the perforated part of music strip 3 is entirely unrolled from roll 1 and the process of rerolling said strip on roll 1 must begin at once. Since the brushes l9 and 19 are now both in contact with the copper band 15, the circuit in- .75, first to position 75 when latch 79 is de pressed to dotted position 79, then to posi- "tion 75? when 64; is carried over against stop screw 81". This movement of 64 draws shiftinglever 26'to dotted position 26, diecoils of spools 60 is made, al

' this keeper toward the left disengags latbh engaging selutch 36, thus removing the power from shaft 37 and removing copper comb 66 from mercury cups 69, thus breaking thecircuit to motor 47 and throwing the power on of the same. It also causes copper comb 67 to enter mercury cups and thus closes, the circuit to-motor 48, starting the same" aid causing shaft 58 to rotate in a counterqclock-wise direct-ion. At the same time as shiftingbar 26 is carried to dotted position' 26f,fclutch 51 is caused to engage with pi 55 and the rotation of shaft 58 is transmi ted to; roll 1. Thus the rerolling of the strip?) is begun by power from motor 48. As scones a few. turns of the strip 3 has accumulated bn roll. electric contact between brushes 19 and 19. is interrupted by the intervention of the strip 3 between said brushes and the copper band 15. Thus the circuit from battery 100 thiz o'ugh magnet 61. is broken and the battery rests. Since latch 78 is now in dotted positionl'is, in engagement with catch 83, rocker arm (5% will remain "in contact with stop screw; '81. Meanwhile i'erolling continues until copper bands 16 and 151 on roll 2 are uncovered. Then brushes 222 and 22 comeinto contact with said bands and the circuit thi ough wires 16', G and H, battery 101 and the from said battery to energize.electromagn ei 80. This magnet attracts keeper iron;

75. The first movement bi the position 78fron1 catch 83, Continued left-hand inoven'ient of keeper 75 carries rocker arm (34 over against stop screw 82, which-removes copper combo? from mercury cups 70, thus breaking the circuit to motor 48 and throwing the power oil of the same. Also at the same time link 77 carried toward the left, moving shifting lever from the dotted position at 26 to the full-line position at 26, which disengages clutch 51 from engagement with pin 55 and separates roll 1 from its source of power. Hence roll 1 ceases to revolve. Also clutch 38 has meanwhile been thrown into engagement with pin 41, and the ratchet flange of said clutch I into engagement with dog 30, thus stopping further counter-clockwise revolution of-ro ll 2 and preventing eyelet 3 from disengaging with hook 3". And since comb 66 new closes the circuit between mercury cups 69 power is again supplied to motor 4? and the several parts of the apparatus are in such relative positions that they are now in order for the rendering of the music indicated by the perforations in music strip 3.

In addition to the greater positivencss of action and-accessibility for repairs of my improved apparatus as' compared to those now in use, there is a further advantage gained by having the rerolling done by a motor independent of the one used to operate the vacuum bellows in. that, during the rerolling, the vacuum apparatus may remain at rest thus the noise, wear, and use of power attending its operation is avoided.

Having thus described one practical way of using my improvement, I claim,

1. In an automatic musical instrument, the

being cutaway in places adapting it to uncover portions or said metallic surface before said strip is entirely unrolled; metallic pieces adapted to make arunning electric contact with said metallic surface when the same 1s uncovered by sald strip and mounted to permit the several turns of said strip when 011 said roll to lie between said metallicsur-J face and said pieces; an electric motor;' an 1 electro-magnetic circuit breaker electriccoiu nections between said metallic pieces and the coils of the. controlling electromagnet of said circuitbreaker. said. connections includinga "sourcev of electrir zity; electrical connections between the arina ture terminals of said motor-1 andv said circuit-breaker; and

mechanical connections between the shaft of.

saidkmotor and said roll,

rm an internal tic musical instrun'ient, the combination oif'a music roll; a take-up roll, 1a. metallicsurfaceomeach of said rolls; a perforated music strip having one end attached to ea'ch ass iled-011s, portions of said ends being cut away adapting them to expose parts oi' said metallic surfaces before said strip is entirely unrolled; a pair of i'n- I sulated metallic pieces supported near each of said mlls and being adapted to make a running electric contact with the metal surface on each of said rolls when the same are exposed by the cut-away ends of said music strip, and mounted to permit the several turns of said stria when on said rolls to lie between said sur aces and said pieces; two electric motors; a double circuit breaker comprising two electro-magnet-s for operating it; electrical connections between the metallic pieces supported near said music roll and the breaker closed by the said electro-magnet;

music roll; meansbeing adapted, to electrically connect said circuit bl8.lC- 1 said battery and one of the magnets of said electromagnetic circuit breaker; another electric battery; another circuit breaker electrically connected through said other battery to the other magnet of said clectr0- magnetic circuit breaker and being adapted to close the circuit when said. music strip is nearly unwound from said take-up roli whereby said elect/re magnetic circuitbrcaker closes the circuit through the motor adapted to revolve said take-up roll; means being adapted to electrically conhect said 15 other circuit breaker, said other battery and the other hiagnet of said elcctro-magnetic circuitbreaker, and mechanical connections between said elective-magnetic circuit breaker and said rolls being adapted to cause said rolls to coeperatc i'n passing said music strip back and -forth over said tracker beard.

Signed at Bellingham, in the county of Vhatcom, and State of Washington, this sixth day of Januai", A. D. 1909.

CHARLES A. RGHRYBACHEit.

Witnesses:

R. S. SIMPSON, S. E. HAGLER.

Images