US832849A

US832849A - Electric perforating-machine.

Info

Publication number: US832849A
Application number: US5700001A
Authority: US
Inventors: George Howlett Davis
Original assignee: Individual
Current assignee: Individual
Priority date: 1901-04-22
Filing date: 1901-04-22
Publication date: 1906-10-09
Anticipated expiration: 1923-10-09

Description

wilfawmu PATENTED OCT. 9, 100" v G. H. DAVIS ELECTRIC PERFORATING MACHINE.

APPLICATIOII FILED APARTL 001.

No- 832,849. PATENTED OCT. 9, 1900.

' G. H. DAVIS.

ELECTRIC PERFORATING MACHINE.

APPLICATION PILIJD APR. 22. I901.

6 SHEETS-SHEET 2.

m. 882,840. PATENTED 091 .9,1900 G, H. DAVIS.

ELECTRIC PERFORATING MACHINE.

APILIUATIOK FILED Anna, 1901.

wikwc men PATENTED OCT. 9, 1906.

G. H. DAVIS. I ELECTRIC PERPORATING MACHINE.

APPLIOATION FILED APR. 22. 1901.

B SHEETS-SHEET 4.

832,849. PATENTED OCT. 9, 1906.

G. H. DAVIS.

ELECTRIC PEBFORATING MACHINE.

APPLICATION FILED APR.22. 1901. N

e SHBETSSHEET 5.

wnmasses:

PATENTED OCT. 9. 1908.

G. H. DAVIS.

ELECTRIC PERFORATING MACHINE.

APPLICATIOH IZLEI' APE/Z2. 1001.

W'fNESSES fiwcagf UNITED STATES .PATENT OFFICE.

FORGE HOWLETT DAVIS, OF BROOKLYN, YORK.

ELECTRIC PERFORA TING-MACHINE.

Specification of Letters Patent.

Patented a. 9, mos.

Application filed April 22, 1901. Serial No- 57.000-

To all whom it may concern:

Be it known that I, GEORGE HOWLET'I DA- vIs, a citizen of the United States, residing inv the borough of Brooklyn, county of Kings,

city and State of New York, have invented j certain new and useful Improvements in Electric PerforatingMachines, of which the following is a specification, reference being had therein to the accompanying drawings, in whic Figure 1 is a perspective view of the machine; Fig. 2, a side elevation of a portion thereof; Fig. 3, a plan view of that portion of' the machine shown in Fig. 2; Fig. 4, a vertimay be readily compared by the attendant cal longitudinal section of the record-blankfeeding mechanism; Fig. 5, a vertical longitudinal section showing the stencil-support and feeding means and the punch-controlling means; Fig. 6, a detail view showing the automatic means for releasing the swinging stencil-support; Fig. 7, a detail of the means for removably mounting the stencil-roll;-Fig. 8, a plan view of the adjustable guides for the record-blanks; Fig. 9, a transverse section on the line 9 9 of Fig. 8; Fig. 10. an end view of a pair of the gripping-bars ofthe record-blankfeeding aprons; Fig. 11, a side elevation of one end thereof, the apron-guide belng shown in section; and Fig. 12, a detail plan of the latch device for holding the swinging stenc'ilcarrying frame.

This invention relates to new. and useful improvements in that class of machines forf perforating music-sheet paper for use with automatic musical instruments covered by; my Patent No. 659,053, dated October 2, '1900, in which reciprocating punches are se' lected and controlled bymeans of electrically actuated devices, these latter devices being controlled by a punch-selecting medium in the form of a pattern-sheet or a perforated stencil which is passed between a contact-bar and a series of selector fingers.

One of the objects of this invention is to provide a means for comparing the recordblankswith the pattern-sheet. In one embodiment of the invention the stencil-sheet or other punch-selecting medium or pattern after it has passed between the se]ectoriingore and the contact-bar will be caused to move with the perforated records in such a position that the note-perforations or other selector-iinger-operating means of the stencil will register with the corresponding noteholes in therecordstrip, whereby the records or operator with the original and maperrections noted. 3 j

Another object of the invention is to-proe vide a stencil or 'pattern-feeding'device and means for operating it-inadvance of the.

movement of the mechanism for drawing the record-blanks through the machine. f

A further object of the invention is to pro vide means for throwing out of operation the punch selecting and locking mechanism and nected by the -pitmen 2 to the ends of the punch-carrying bar 4 to. vertically recipro cate said bar during the rotation of the shaft,

aft 2. On this shaft are as fully set forth in my Patent No."659,053,

hereinbefore referredto.

The record-blanks 5 are wound on transverse horizontal shafts, which are remov- 1 ably mounted in a frame 6, located at the rear of the table 1. This frameconsists of two lower longitudinal bars 6, which are provided with notches in their upper. edges, in which notches are journaled the ends of the horizontal transverse shafts, which. carry the record blanks. and parallel therewith is a second set of similar bars 6 which are provided with notches in their upper edges to receive the ends of the second series \of parallel transverse shafts, on which are woundrecord-blanlrs The record-blanks are unrolled from the shafts and drawn forward under the punches, said blanks being brought together one above the other before they reach the punches, suitable pressure-rolls bein pro;' vided to hold them in close contact with each other as they pass under the punches. I

To accurately guide the superposed record blanks through the punching mechanism to to guide the longitudinal edges of the recordbianks. These guides are formed of angle Above the lower bars 6*" the endless apron-feed mechanism, the longi tudmal guides 106 are provided, oneot said guidesbelng near each sale edge ofthe tabie s ceases iron bars, one member of each bar forming the 111w ard-extendi ng horizontal bed-supp ort,

the other member extending upward from the outer edge of the horizontal member and forming a guide for the paper strips. The bed-pieces 10]. loosely rest on the horizontal members of the guides and extend across-the space between the vertical members thereof. There are two of guides--one to properly direct the paper to the-punches and one to guide it from the unches to the feeding mechanism. Each a1 is provided with a depending intcruelly-threaded lug 102 near each end thereof. Extending across the table 1 and mounted in suitable bearin s are transverse shafts 1623, which pass throng. corresponding lugs on the guides 100. The lugs on the bars near one edge oi the table are threaded in one direction, while those near the other edge oithe table are threaded in the opposite direction, and the shafts 103 are corrcsp ndingly threaded where they pass throu the lugs, so that by simultaneously rotating the shafts the guides will be moved inward or outward an equal distance, depending; on the direction of rotation of the shaf s. To siniultaucously and synchronously rotate those shafts, a beveled gear is sooured on the corresponding end of each shaft, and a longitudinal shaft 104; is mounted on the table and is provided with a series of gears, which mesh with the gears on the shal'is 103 and are arranged to rotate said shalts all in the same direction. A suitable oporatingduuidle is secured. to one end of the sh it iiii. \i'herehy it may be conveniently ri'ilulcd. The advantages of these guides will be readily sooii. As the records vary in width according; to the range of the musical composition ii, is desired to reproduce, it is very desirable to provide means for quickly and iici-iirzitcly' ("entering the record-blank with i-cspm-t to the punches. Alter the guides have been adjusted the bod-pieces of tin (li't-i!'l i width are put in 'ilacc on the horixonlul nwnibci's oi the angle-iron guides;- "his oi'o: ol' tgilliilllg mechanism is particularly inir'unhigcrius when guiding superimpost-d oi' paper through the pcrlln'ator. in sin u c ihc webs are liable to not out of show and to shift with relation to Til Form in guiding; mechanism roinplcirl v avoids ligidi swan-Pd to the table 1 and extendhrmzrd ihcrriroin is :1. pair oi horizontal which ar journalwl the horil'is oi the "upper and lower l'ecdllu'sv innit-apron are geared to on? and {H'I driv n l'i'om the main shaft 3 oi suitable mechanism, which u a slip b -sicii motion.

5 consists oi the ratcheton-h secured on thi' outer end he upper iced-apron. llngag- -w owi.-- .vh -.ol is a pawl it, carried Patent N0. 659 053.

Connecting the side chains 39 of the upper apron are a series of transverse rigid clamping-bars 48, which are equal distances apart,

and connectin the chains 40 of the lower apron are simi a r transverse rigid bars 49. On the outer surface of these latter bars are secured rigid cylindrical gripping-bars 5.0, which clamp the record-strips against the bars 48 of the upper apron. These cylindrical gripping bars are rotatably adjustable in order to resent a new gripping-surface to the paper W enever the bar becomes so worn that it fails to grip the stri s with sufficient pressure. The reduced cm s of these cylindrical bars are adjustably clam ed in boxes 57, carried by the bars 49. If esired, these cylindrical bars may be loosely mounted in the boxes 5'7, so that they will be free to easily rotate and to thereby distribute the wear around the bar. The

bars

48 and 49 are provided on their inner sides near their ends with antifriction-rollers which bear on the tracks 52, said tracksguidin the chains of the aprons close enough toget ier to cause the bars 50 to bind the record-stri against the bars 48 of the upper apron, sair. antifriction-rollers preventing the

bars

28 and 49 from contacting with the track. From the feed-aprons the records pass over a rod 64- and thence to a suitable winding mechanism.

Mounted on the table at the rearend of the feedaprons are a pair of standards 9, one of which is located near each side edge of the tablc. These standards support a horizontal cross-beam 8 above the record-strips, and mounted on this beam is a vertical support ing-lranic 7. Pivotcd at its upper end to the top of this frame is a depending frame 10, which carries the rotatab e contact-bar 16, said frame forming one member of a twopart contact device. Connecting the two l'rnmcdinrs 7 near their upper ends is abar it"), of non'conducting material, and do )cnding from this bar is a series of separator spring circilit-selector lingers 17, each of which hours on the rear side of the contact-roller 'und is in circuit with a double-wound electronuigrnct 20, which is adapted to actuate a })llil('ll-l()('.l(lfl device or dog, as is clearly set forth in my patent hereinbcfore mentioned, said series oi circuit-selector fingers formingthe other member of the two-part contact device. The clcctromagnets and the devices connected thereto constitute a punchcontrolling means.

,iournalcd in one side of the frame 10 near its top is a stub-shalt 13*, which is recessed "and slotted to receive one end of the spindle 4 j t e stencil. moved to one side and, the spindle readily de v 13 of the perforated stencil '15, said end bein formed with ribs which enter the slots an 'causethe spindle to rotate with the shaft.

secured tothe frame and bear at their free ends down on the ends of the spindles and act as brakes therefor and form a tension device These; springs may be tached from its supports whenever desired.

Mounted in the frame 10 is a transverse cleanin -roll 25, which bears on theforward side of t e contact-roller and wipes said roller clean, thus insurin a good contact between it and the c rcuit-so ector fingers. This cleaning-roll isrotated by means of gears 26 and i Y "2.7, which are carried by the swinging frame,

and a smaller gear 29, secured to the inner end of a short shaft carried by the frame 7. This gear meshes with the gear 2-7 and is driven by a bel't 32,whicli asses around a "pulley on the shaft of t e gear 29 and around a pulley 31 on the main shaft 2; To divert the stencil-sheet slightly forward after it has passed down in engagement with the rear of the contact-roller, so as to hold it in close engagement therewith, a large loose '35 .punc'h-selecting' medium j or pattern-sheet roller 28 is mounted in the frame 10 forward of the contact-roller.

The twopart contact device and the constitute a punch-selecting mechanism.

To normall maintain the frame 10 forward to hold t e contact-roller out of engagemerit withthe selector-fingers, springsll are provided, which are secured to the frame/7 and 'engage pins 12 on the frame 10, said s rings acting to swing the frame 1() forward.

n the uprights 7 are pivoted latches 66, whose forward ends engage lugs 63 on the swinging frame and lock the contact-roller in engagement with the selector-fingers. Connecting these latches together is a bar 67 which is connected by a pin-and-slot arrangement to avertical reciprocable rod 69, whose lower end is held in a suitable guide, its upi per end extending'to the top of the frame 7 and being provided with an o ierating knob 7 3. This rod is normally hel elevated and the latches in engagement with the lugs on theframe 10 by a coil-spring 70, which surrounds said rod near its lower end. It is ob vious thatlby pressing the rodGQ the frame 10 will bereleased and'swung forward and the contact-roller 16 will be carried away fromthe selccitm-fmgers.

To automatically release this frame, when the of the note perforations or patterns in the stencil or other punch-selecting rnedium have passed between the roller 16 and the selector fingers the rod 69 is provided with an armature 71 above an electromagnet 72, which is in circuit with the contact-bar 16 and with a contact-finger 7 which bears on the punch selecting sheet near the edge thereof and contacts with the bar 16 onlywhen the end of the-sheet has passed under it. It is obvious, however, that a suitable perforation may be formed in the sheet in such aposition that it will permit the finger 77 to con tact, with the bar 16 immediately after the last note-perforation on the sheet has passed over the contactroller, as indicated in dotted line in Fig. 6. When the end of the patternsheet passes under contact-finger 77 and said finger is permitted to contact with the roller 16, the magnet 72 pulls down armature 71 and causes rod 69 to release the catches which hold the frame 10. i

From the guide-roller 28 the stencil passes downward in the rear of a transverse hori zontal rod 83, which is secured at its ends in the upper ends'of vertical arms 34, mounted on the ends of a rock-shaft 35, this shaft being journaled in suitable standards mounted on the table 1. One of the arms 34 is slotted longitudinally, and adjustably mounted in said slot is the forward end of a pitman 36. The rear end of this pitman is connected to the strap of an eccentric 37, secured on the shaft 2. The movement of the eccentric is so timed that the bar 33 will begin to move rearward the moment the punches are clear of the record-blanks in moving upward and will continue this rearward movcmentunt-il the punches have completed their upward movement, when it will then be moved forward. From the vibrating bar 33 the stencil is carried. down to and under the horizontal roller 38, which is suitably supported on the table just above the records or perforated sheets 5. After passing under the roller 38 the stencil is carried forward with the record strips and is clamped with them between the transverse gripping-bars ,of the feed-aprons. When the forward. end of the stencil has passed from between these aprons, it is secured to a hook of a transverse shaft 59 and is wound thereon by means of a belt 62, which passes over a pulley 61 on the end of the shaft 64 and over a pulley 63011 the shaft 43 of one of the feed-aprons. I

The vibration of the bar 33 feeds the stencil between the selector-iingcrs and the contact-bar, and the movement of the eccentric 37 is timed, as described, inorder that this feeding movement may be completed in advance of the feeding movement of the carrier-aprons. The movementof the cam 47, which actuates the feed-aprons, is so timed that the aprons will begin to draw the rec 0rd blanks when the punches have reached the highest point in their upward movement lOO and will complete said drawing movement before the punches reach the blanks on their downstroke.

I have found in practice that this is'the only safe time to feed the blanks under the punches, as there is, always more or less uckle tothe paper at the punches, and to start the paper while the punches are intheir upwardmovement results very often in torn records, caused by the edges of the perforations catching on the punches. I have also found in practice that if the stencil andthe record-blanks are fed synchronously during the downward movement of the punches the time is too short to'permit the punch-selecting and punch-locking mechanism to properly work unless the machine be operated very slowly.

'I-nperforating a plurality of webs of paper it is of course necessary not to begin the feed movement of the record-blanks until the instant that the punches are withdrawn from the webs on the upstrol re. I have discovered it to be even preferable to avoid beginning this feed until the punches start on the return stroke, owing to thefbur left by the punches in the paper sticking and cloggin the feed by catching on the punches. Al

the time" that the punches are moving through the superimposed webs of record' blanks i. 0., while they are being withdrawn frointhe webs of )aperis lostso far as the means for controlling the perforating mechanismis concerned. lhave discovered that by providing an auxiliary feed for the stencil that actuates the punch-controlling mechan ismand by giving this a movement which is out of phase with relation to the feeding movement of the iecord-blank-feeding mechanism, and preferably in advance thereof, I

I can give the punah-controlling mechanism additional time to act, and thus be certain to set and lock the punches before the recordbl'anks have been fed to their new position ready to be perforated anew. 'lime is thus also given to permit the locked punches to be released. This improvement does away Wll'dl the failure to punch some of the holes in the record-blanks, as often happened in prior I machine In ()I(. er,-thcrefore, that the machine may be'operated rapidly, l have arranged'the stenoil-feeding. eccentric 37, as described, so that it will operate to feed the stencil in advance of the movement of bllGfI'GCOId-blfillkS. By

this means securedmlble the time for the operation of the circuit-selccting and punchlocking mechanism as for moving the record blanks. The result of this advancement of the stencilis that the punch-locking dogs are moved into place when the punches reach the highest point in their movement. It will be understood that the rated movement of the stencil and the'record-blanks is the sam' that is, the distance moved each step is equal I" will now describe'the means for detecting the imperfections in' the record-blanks. The distance between the roller 38 and the point of contact between the selector-fingers and the contact-bar is about the same or al trifle' shorter than from said roller to the punches. stencil or pattern-sheet and records are brought together between the a rons the pattern or noteerforations of t e stencil will register wit-1 the corres ending note perforation in the records. this means the records may be comparedwlththe stencil and imperfections noted immediately. AS the stencil is fed in advance of the records there will bea slightly greater len th of stemcil between the contact-bar and the roller 38 than there is of record-stri "between' the punches'and said roller; but t is extra'length of stencil is taken up in passing around the roller 28 and in extending rearward over the vibrating bar 33 when said bar isin= its rearward position.

It will' be noted that the pattern-sheet is arranged between the eye'of the observer or com )arcr and the re'cordblank so thatby lookm through the holes in the patternsheet the observer can readily detect whether the corresponding holes have been punched in the stock.

,In order that the stencil-sheet may he reaililyrewound on the roller 1-3, a 'smaltgeaf 76- is secured over the outer end of the shaft punching mechanism, an electrically ope'rated punch-(mntrolling' means, a series of circuit-selecting fingers in circuit with the punch-controlling means, a contact for said lingers also in said circuit, mea'ns for moving a pattern-s'heetin contact with the selectorfingers to actuate said fingers, and means adapted to be controlled by the pattern sheet to automatically render the'eirc'uit-selecting means inoperative.

2. In a perforator, the combination of a punching mechanism, an electrically-operated punch-controlling means, a series of circuit-selecting fingers in circuit with the unch controlhng means, a contact for said 'ngers also in said circuit, means for moving a pattern-sheet in contactwith the selector fingers to actuatesaidfingers, and electric- The object of this is that when the" ally-actuated means adapted to be controlled by the pattern-sheet to automatically render the circuit-selecting means inoperative.

3. In a perforator, the combination of a punching mechanism, an electrically-operated punch-controlling means, a series of circuit-selecting fingers in circuit with the punch-controlling means, a contact for said fingers also in said circuit, a punch-selecting medium or pattern-sheet, means to move said medium past the circuit-selecting fingers to bring said fin ers into enga ement with their contact, an means controlled by the punch-selecting medium to render the circuit-selecting fingers inoperative. 4. In a perforator, the combination of a punching mechanism, an electrically-operated punch-controlling means, a'contact device comprised of two members one member being formed by a series of circuit-selecting fingers, a contact for said fingers forming the other member, means for moving a patternsheet in contact with the selector-fingers to actuate said selector-fingers, and means for moving one member of the contact device to render said device inoperative.

5 In a perforator, the combination of a punching mechanism, an electrically-operated-punch-controlling means, a contact device comprised of two members one member being formed by a series of circuit-selecting fingers, a contact for said fingers forming the other member, means for moving a patternsheet in contact with the selector-fingers to actuate said selector fingers, and means adapted to be controlled by the pattern- .sheet to automatically move one member of the contact device to render the circuit-selecting means inoperative.

6. In a perforator, the combination of a punching mechanism, an electrically-operated punch-controlling means, a contact device comprised of two members one member being formed by a series of circuit-selecting fingers, a contact for said fingers forming the other member, means for moving a patternsheet in contact with the selector-fingers to actuate said selector-fingers, and electrically-op erated means adapted to be controlled by the pattern-sheet to automatically move one member of the contact device to render the punch-selecting means inoperative.

7. In a perforator; the combination of a' punch mechanism, an electrically-operated punch-controlling means,. a contact device comprised of twoinembers one member being ormed by a series of circuit-selecting fingers, a contact for said fingers forming the other member, a pattern-sheet or punch-Selecting medium, means for moving said me-' dium past the circuit-selecting fingers to bring said fingers into engagement with their contact, and electrically operated means controlled by the patternesheet to automatcontrolled b ically move one member of the contact device to render the circuit-selecting fingers inoperative.

8. In a perforator, the combination of a punching mechanism, an electrically-operated punch-controlling means, a two-part contact device one member thereof being a series pf circuit-selecting fingers the other member being a contact for said fingers said contact device being in circuit with the punch-controlling means, a pivoted frame carrying one member of the contact device, means for moving a punch-selecting medium past the selector-fingers to bring said fingers into engagement with their contact, and means for moving the pivoted frame to separate the members of the contact device to render the punch-selecting means inoperative.

9. Ina perforator, the combination of a punching mechanism, an electrically-operated punch-controlling means, a two-part contact device one member thereof being a series of circuit-selecting fingers the other member being a contact for said fingers said contact device being' in circuit with the punch-controlling means, a pivoted frame carryin one member of the contact device, means or moving a punch-selecting medium .past the selector-fingers to bring said fingers into engagement with their contact, and electrically-operated means adapted to be controlled by the punch-selecting medium for moving the pivoted frame to separate the members of the contact device.

10. In a perforator, the combination of a punching mechanism, an electrically-operated punch-controlling means, 'a two-part contact device one'member thereof bei a seriesof circuitselecting fingers the o ther member being a contact for said fingers said contact device being in circuit with the punch-controlling means, a pivoted frame carrying one member of the contact device, a punch-selecting medium, means for moving said medium past the selector-fin ers to bring said fingers into engagement wit their contacts, and electrically-operated means the punch-selecting medium for moving t e pivoted frame to separate the members of the contact device.

llfIn a perforator, the combination of a punching mechanism, an electrically-operated punch-controlling means, atwo-part contact device one member thereof bein a series of circuit-selecting fingers the ot er member being a contact for said fingers said contact device being in circuit with the punch-controlling. means, a pivoted frame carrying one member of the contact device, means for supporting a punch-selecting medium on the pivoted frame, means for draw ing said medium between the members of the contact device and electrically operated combination of'a stationary frame, a series of means controlled by the punch-selecting medium for moving the pivoted frame to separate the members of \the contact device.

12. In a perforator, the combination of a punching mechanism, an electrically-operated punch-controlling means, a series of circuit-selecting fingers, a pivoted frame, a contact-bar carried by saidframe, means for normally holding the frame in a position to separate the contact-bar from the fingers, means for locking said frame to hold the contact-bar in engagement with the fingers, means for moving a punch-selecting medium between the fingers and the contact-bar, and electrically-operated means adapted to be controlled by the punch-selecting medium to release the pivoted frame-locking means.

13. In a perforator, the com ination ofa punching Il'lGOhiLlliSID, an electrically-open ated punch-controlling means, a series of circuit-selecting fingers, a pivoted frame, a contact-bar carried by said frame, means for carrying a punch-selecting medium on said frame, means for normally holding the frame in a position to separate the contact bar from the fingers, means for locking said frame to hold the contact-bar in engagement with the fingers, means for moving the punch selecting medium between the fingers "and the contact -bar, and electrically-operated means adapted to be operated by the punchselecting medium to release the pivoted frame-locking means.

14. In a'perforator, the combination of a punch mechanism, an electrically-operated puneh-controlling mechanism, a series of circuit-sclecting fingers, carried by a stationary frame, a swinging frame pivoted. to said sta tionary frame and carrying-a contact-bar, a locking means to hold said frame and maintain the contactebar in engagement with the selecting-fingers, and means for moving a puncl1-selectin; medium between the fingers and the contact-bar. Q

15 In ,a perforator, the combination .of a punch in'ecl ianisni, an electrically-operated punch-contfolliug mechanism, a series of circuit-selecting fingers, carried by a stationary frame, a swinging frame pivoted to said stat'ionary'frame and carrying a contact-bar, a

locking means to hold said frame and maintain the contact-bar in eng agement with the selecting; fingers, a reciprocable rod eonneeted to the locking means and carrying an armature, an electromagnet adapted to act on said armature-andmove saidgrod, a con tact-finger in circuit with said magnet and adapted to bear on the contact-bar, means for electrically connecting said bar to the magnet, and means for moving a punch-selecting' medium between the contact-finger and the bar.

16. In a punch selecting mechanism, the

selector-fingers carried thereby, a swinging fraine, a spring for normally holding said frame away from the stationary frame, means for locking the swinging frame to the stationary frame, means for moving a punch selecting medium between the fingers and the contact-bar, and electrically-operated means controlled by the punch-selecting medium for automatically releasing the locking v means of the swing-frame.

17. Ina perforator, the combination of a punching mechanism, an 'electricaiiy-operated punch-controlling means, means for in-' termittently feeding the record blanks to the punching mechanism, a circuit-selecting contact device, a punch-sales ting mediu m, means for intermittently feeding said. punch-selecting medium through the contact device, said feeding means operating in advance of the record-blank-feeding device.

18. In a perforator the combination of a punching mechdnism, an electrically-open ated punch-controlling rneans means for iiitermittently feeding the record-blanks to the punching mechanism, a circuit-selecting contact device, a punch-selecting medium, a vibratingfeeding devicefor intermittentiyfeeding said punch-selecting medium through the contact device,'said feeding means operating in advance of the means for feeding the record-blanks. i 9

19. In a perforator, the combination of reciprocating punch-carrying frannei, an electrically-operated punch-controlling means, a ste'i-by-stepfeed1ng mechanism for the rec ori -blanks, means for operating this feeding mechanism while the punch-frame is moving toward the record-blanks, a circuitseiecting medium, and a step-by-step-feeding device for feeding said punchseleeting medium through the contact device while the unchframe is movin away'from the recordlanks.

20. In a perorator, the combination of a punching mechanism, an electrically-operated punch-controlling means, means for intermittently feeding the record-blanks to the punching mechanism, a circuitselecting contact device, a punch-selecting medium, means ittently feeding. said punch-selectn1 n,th16ugh the contact device, saidfeeding .meansoperating in advance of the record-blank feeding means, and means for leading the punch-selecting medium from the contact devieeinto the record-blanlefeeding device'to cause said, medium to move with the'records after it has ,passed through the contact. devices" 2-1. In aperforator, the combination of punching mechanism, 1 means for intermittently feeding a record bi ank to the punch ing mechanism, a contact device, means for 125 intermittently feeding a uncheeiee tern-sheet or mediurrrt ongh said con lecting sheet to rogressively register with the record, where y the record may be compared with the patternsheet I H 22. In a perforator, the combination of a punching mechanism, means for intermittently feeding a record-blank to the punching mechanism, a contact device, means for intermittently feeding a perforated stencil through the contact device, and means for bringing the stencil after it has passed" the contact device into contact with the perforated record to cause the perforations 1n the stencil to register with the correspondingperforations in the record.

23. i In a perforator, the combination of a punch mechanism, means for intermittently ceding a record-blank to the unch mechanism, a contact device above t e unch mechanism, means for intermittenty feeding a perforated stencil through. the contact device,

means for bringing the stencil down into contact with the record to cause the perforations in the stencil to register with the corresponding perforations in the record, the superposed record and stencil passing through the recordblank-ieeding mechanism in close contact.

24. In a perforator, the combination of a unch'mechanism, means for intermittently ceding a record-blank to the punch mechanism, a contact device, a stencil-roll support, a

tension device for the stencil, means for bringing the stenbil into the record-feeding means, a' vibratin rod engaging the stencil between the contact device and the recordblank-feeding device, means for moving said rod in one direction to feed the stencil through the contact device during the dwell ofthe' recordefeeding device and to move said bar in the other direction. to slack the stencil when the record-feeding device operates tofeed the recordnnd take up the slack in the stencil-sheet.

25. In a stencil-feedin means for perforating-machines the com ination; of a support, a contact device, a tension device for the stencil, means for gripping the stencil after it has passed the contact device, a transverse bar adapted to engage the'stencil between the contact device and the gripping means, means forlmoving said bar in one direction to'pull the stencll throu h the contact device and in the other irection to slack said stencil, and means .for intermittentl movin vthe gr'ppingdevice to take up the s ark in t 1e stencil.

26. Inc erforator, the combination of a driving-shaf l. a punch-carrying frame reciprocated by said shaft, a stencil-support, a contact device, an apr0n-feed for movin a record-b1ank in a step-by-step manner on er the unch-carr 'ng frame, means operated by t e main s aft for moving said apronfeed during the downward movement of the punch-carrying frame, a vibrating device for feeding stencil through the contact device in a step-by-step manner, and means for tuating said device from the main shaft dur ing the upward movement of the unch carrying frame to feed the stencil through the contact device while the a ronfeed is at rest and to slack said stencil w en the apron feed is operated.

27. In a stencil-feedin means for perfo rating-machines the com ination of is. support, a tension device for the stencil, a con: tact device adapted 'to be actuated by. the movement of the stencil therethrough, means for holding the stencil after it hasv passed the contact device, means for intermittently moving the stencil through the contact device, and "means for moving thecleaning the contact-bar, means for operating said cleaning device.

' 29. In a stencil-ieed the comblhatlon ofa the fingers and the bar, a cleaning device for support, a series ofsele'ctor-fingers, z'irotary contact-bar, means for moving a punch-se lecting medium between thqfinge'rs and the p bar, a cleaning-roll in contact with the cons tact-bar, and means for rotating said "cleanv i r ing-roll.

30. In a stencil-feed; the tartan-ah bi a. support, a series ofs'electonfingera-a con--7 I tact-bar, .means for removably. mounting-a ,i'oo stencil-roll, a brake device fiorsaid roll, .2 means for'movmg a stencil between the fin-- gers and the contact-bar, and a rewindin i mechanism adapted to rotate the stencil-r01 3 1. In a record-blank-feeding. nechanisrn for perforating-machines, the i combination of a support, a pair of endlessfeedsaprons having t eir feeding-surfaces parallehand proximity to each'other, transverse rigid 'r'ipp -bars carried by. each apron," rigid guides ?or the ends of said bars whereby the apronsare brought together to, cause the.

rigid grip'pin -bars to grip the fecordblank,

and means or giving the aprons a synchronous intermittent movement, I] p 32. In a record-' blankfeed1ng mechanism, the combination of a support, a pair 'Ofendless feed-aprons, rigid transverse gripping bars secured to one of said aprons,"cylindrical gripping-bars carried by the other apron, means for rotatably supporting the cylindrical bars, rigid guides --for" the aprons" whereby the bars are brought to ether to grip the record-blank, and means or giving the aprons a step-b -step movement.

33. A record --b ank uide consisting of parallel bars between whlch the blanks pass,

means for simultaneously and synchropunch-carryin tion (of; a

- an out-of-phase relationbetween the time of .neusly adjusting said bars toward or from each other, and a removable bed-piece supported by said bars.

' 34. In a perforator the combination of a blank rolls consisting, of a pair of parallel sid'e bars provided Wi h recesses in their upper edges, a series of transverse shafts removably mounted in sa1d recesses and carrying 5 the record-blanks, in' combination with a punching mechanism, and means for holding the record-blanks in close contact one above the other asthe pass throu h the-punching mechanism, an means for drawing the record-blanks through the punclmag mechanism in a step-by-step movement.

36. A record-blank guide fora perforatingmachine, consisting of parallel bars, means for adjusting said bars toward and from each other, and a removable bed-piece supported by'said bar's. v 4

37. In a perforating-machine the combinaperforating mechanism, a recordblank .gui e for guiding the superimposed websto be perforated through the perforatin mechanism, consisting of two pairs of paral el'ba'i's, the bars of each pair bein arranged in alinement, and means for simuItaneously and synchronously adj ustingeach pair o'fbars' toward and from each other. 7 j

38. In a perforating-machine, the combination of a perforating mechanism means for feeding the record-blanks to theperforating mechanism, means for controlling the perforating mechanism, and means forpre serv-ing actuation of the controlling means and the feeding means for the-reeord-blanks, substantially as described.

' In a perforating-machine, the combi-f.

frame, means for reciprocat- 1t,a reeor -blank-guide consistin of a' pair of parallel guide-bars to guide the %lanks frame'and a pair of nation of a perforating mechanism, controlling mechanism for the perforators, including. a pattern-sheet, and means for giving the pattern-sheet a feed movement which is out of phase with the feed movement of the record-blanks, substantially as described.

40. In a perforating-machine, the combination of a perforating mechanism, means for controlling the perforating mechanism, means for feeding the record-blanks to the perforat-v ing mechanism, and means for actuating the controlling means in advance of the actuation of the means for feeding the record-blanks, substantially as described.

41. In a perforating-machine, the coinbi nation of a perforating mechanism, means for controlling the perforating mechanism e1ec- 'trically, means for feeding the record-blanks to the perforating mechanism, and means for 'encrgizingthe electrical controlling means in advance of the actuation of the means for feeding the record-blanks, substantially as described.

42. In a perforating-machine, the combination of a perforating mechanism, means for controlling the perforating mechanism electrically, to the punches during the movement of the punches toward the record-blanks, and means for energizing the controlling means for the punches during the movement of the punches away from the record-blanks, substantially as described.

means for feedingthe rebord-blanks 43. As a means for detecting the imperfec tions in music-record blanks, the, combination of a pattern-sheet arranged between the eye of the comparer and the record-blanks,

I and means for associating therewith the music-record blank to be compared, substantially as described.

44. As a means for detecting the imperfections in music-record blanks,. the combination of a pattern-sheet arranged between the eye of the 'comparer and the record-blanks, and means for associating in re istering contact therewith the music-recor, blanks to be compared, substantially as described.

Si ned at Brooklyn, in the county of Kings and tate of New York, this 20th day of April, A. 11.1901.

GEORGE HOWLE TT DAVIS.

Witnesses:

' WM. AITKEN,

CHAS. C. OLIVER.