US1823108A - Combined typewriting and card-perfcrating machine - Google Patents

Description

Sept. '15, 1931. A. G. F. KUROWSKI 1,823,108

COMBINED TYPEWRITING AND CARD PERFORATING MACHINE Filed July 21, 1928 2 Sheets-Sheet l INVENTORI Sept. 15, 1931. A. G. F. KUROWSKI 1,823,108

COMBINED TYPEWRITING AND CARD PERFORATING MACHINE Filed July 21, 1928 2 Sheets-Sheet 2 Patented Sept. 15,1931- aazam UNITED STATES PATENT oFFicE ALFRED G. F. KUROWSKI, OF BROOKLYN, NEW YORK, ASSIGNOR T UNDERWOOD ELLIOTT FISHER COMPANY, OF NEW YORK, N. Y., A CORPORATION OF DELAWARE COMBINED TYPEWRITING'A'ND CARD-PERFCRATING MACHINE Application filed July 21, 1928. Serial No. 294,347.

The invention relates to a combined typewriting and card-perforating machine. The perforating machine or punch, being of the Powers type, forms a separate unit electrical- 1y controlled from the typewriter unit. It operates simultaneously with the typing of a record upon a work-sheet, and perforates cards so as to give a record of certain'data The invention relates more particularly to automatic means or a master switch for' connecting and disconnecting the two units at propel times.

' Heretofore it was required to manipulate an electric switch so as to render the punch 5 operative, while a selected stretch or zone of the work-sheet passed the typinghne. This involved serious mistakes, an operator being liable to conditiona machine at inopportune times. The invention provides a switch including a contact face which moves underthe control of the rotaryplaten, and which is timedin such a manner with the platen rotation that the punch will be allowed to work during" a selected interval of platen rotationv only, to coincide with said selected zone upon the work-sheet Before and after this interval, the typewriter may be operated in the ordi-,

nary manner. I

The master switch includes'preferably a disk of insulating material which is pivoted upon the platen-frame adjacent theplatenshaft and suitably geared up tothe platenshaft. Partof the cylindrical face of the disk is formed with a metal contact face to close a circuit, as it travels past two relatively stationary brushes or terminals. The gears and the contact face are suitably dimensioned and arranged so that the circuit isclosed during therequired interval of platen rotation.

The gearing may be speed-reducing so that a working zone requiring a plurality of platen rotations will cause less than a fullrevolution of the contact disk. In other words,

during a plurality of platen rotations the contact disk will lie allowed to'move only once through its operating zone, so-that any length of the working zone may be taken care of. 1

: definite stopping writing line in the body thereof, which simultaneously connects the Powers punch, which is to remain in operation until the form is completed. By rotating the platen the form may now be returned until free from the feed-rolls and the platen-cylinder"against a position. -This leaves the machine in correct position for inserting the next form so that contact will be made again atthe proper time.

Since the contact disk will preferably not perform more than one revolution, the 1. means required to stop the platen at the initial position may be suitably arranged in the form of lugs between said disk and the platen-frame.

Another feature relates to, means for fine adjustment in timing the switch. Tothis end, the stationary brushes are made adjustable so as to advance or retard the switching. period Other features and after appear. I

In the accompanying drawings,

Figure 1 shows the main operating parts of an Underwood typewriter and a Powers 35 punch, both being electrically connected by a cable. y

Figure 2 is a detail side view upon the platen-carriage showing the novel platencontrolled main switc platen-shaft. v

Figure 3 is a semi-diagrammatical view parts to illustrate the operation of the electrical equipment.

- Figure 4 shows, in perspective, of the novel automatic main switch, parts drawn apart to show their mounting and mutual relation.

On a typewriter having a main frame 10 are. mounted numeral-keys 11, and alphabet- 100 advantages will hereinas geared up to the co the details actuate bell-cranks 14, to swing 21 are successively introduced at the. rear of the platen and fed around it by the usual means including feed-rolls 22 and a knob 23, or ratchet 23. The platen is used in linefeeding the worksheet, but any other rotary line-feeding means may be used.

The carriage 18 is pulled from left to right by a springmotor 24.;connected to the carriage by a strap 25. The type-bars engage a universal-bar 26 movable rearwardly to actuate an escapeinent-rocker 27 carrying escapement-dogs 28 co-operating with the teeth of an escapement-wheel29, to effect step-bystep movements of the carriage by the operation of any numeral-key 11, or of the alphabet-keys or space-bar, not shown. The escapement wheel is connected'to, and 1s rotated by, a pinion 30 driven by a feed-rack 31 supported by arms 32 pivoted to the carriageframe.

Thetabulating mechanism, partly shown herewith, is well-known and includes a tabulator-key-33 pivoted on'the fulcrum 13 and a rocking frame 35 carrying a series of stops 36. By depressing the tabulator-key these into the path of a carfeed-rack 31 is disengaged-from the pinion 30 by means not shown, 24 effects column-skipping or tabulating. usual brakepad 38 is attached to the carriage frame and engages an upper chord 39 of the rocking frame 35-through the depression of the tabulator-key, thus checking the travel ling speed of the carriage.

Power-driven means for returmng the typewriter-carriage may include anelectrlc' motor 40 geared to a clutch-member 41 whlch is keyed on a normally-rotating shaft 42.

On the latter also is the slidably mounted pinion 30 having an attached clutch, not

shown, which has teeth to engage the clutchmember 41. The clutch-pinion 30 is normally in mesh with the feed-rack 31 which is attached to the carriage'by the arms 32. When the carriage has taken its last letterspacing step the clutch-members are automatically engaged and the pinion acts through the rack to return the" carr age to the right-hand-end of its travel, where the clutch-members are automatically disengaged, and the carriage comes to rest-.- carriage-return movement may also be initiated at any time through the depression of a trip-key, not shown, which acts to enand the spring-motor .61 fulcrumed at 62. "The lever 61, through a- When not op narily cut out by a switch, not shown.

In use with the above described typewriter is a Powers key-punch or card-perforating machine which is synchronized with the typewriter and is electrically operated thereby. The key-punch is a separate unit, controlled through an electric cable, and so perforates the card as to give a graphic record of certain data typed on the work-form 21. In effecting this the key-punch completes successive cycles of operation concurrently with the governing typing machine. As in the latter, such cycles may be automatically initiated, or may be initiated by the trip-key.

The Powers'key-punch has a main frame generally indicated by 43 which supports an electric motor, notshown, and normally rotating. Such motor may have a separate switch or may be controlled by the same switch which governs the typewriter carriage-return motor 40. In connection with the key-punch motor is an electrically operated clutch, not shown, which can engage a stub-shaft 44. The latter is automatically disengaged from the clutch at the end of each complete revolution. 7

On the stub-shaft.44 is a driving gear 45 which intermittently rotates feed-rolls 46, 47 and 48, and-ejector rolls 49. Also on the I stub-shaft 44 is a cam 50, having a groove 51 l provided with a'draw-link 34 connecting with in which is a follower roll 52 mounted on an arm. 53. The latter is attached intermediate the ends of a rocker-bar .54, pivoted in a main frame at 55. The rocker-bar carries arms 56 which engage slidable journals 57 and through which a vertically reciprocable sliding frame 58 may be-actuated. Also on the stub-shaft is a cam 59 with a followerroll 60 on a lever spring 63, actuats a feed-plate 64 which can slide one card 65 from beneath a stack of cards 66 and position the'card to be picked up w by the feed-rolls 46. The cards are pressed no flat on the feed-plate by a weight 67 within a card-container or guide 68 mounted on the. main frame.

The sliding frame-58 carries a die-plate 69 and punches 70, having heads 71. The punches are guidedat their upper ends by a fixed plate-72 carried by the main frame 43.

The plate 72, through the heads 71, prevents the punches from falling through the dieplate and maintains a'space between the latter and the punches for the insertion of a card. The punches usually are in columns of twelve each and'with a total of forty-five columns. A super-plate 73 is carried by the verticallysliding'frame 58 and guides the lower end of the punches. The super-plate also holds the carddown when the punches are withdrawn therefrom and keeps the card fiat so its edge may register, to be picked up by the ejector rolls 49.

Supported on themam frame 43 are rails I 74 on which run rollers 75. These rollers support a travelling frame 76. which is kept down on the rails by holding rolls 77. The travelling frame carries a late 78 and also has cross-bars 79 and 80 whlch support other plates 81, 82 and 83. The plates-81, 82 and 83 have rectangular holes which register one above the other and with the heads of the punches 70. In these three plates these holes t pins 84, each of which registers with an underlying punch. Each pin has a fixed collar 85 and a compression-spring 86. The

1 springs permit the pins to be depressed, but

also co-act with the plate 83 to raise the.

collars againstthe plate 82 which limits the upward movement of the pins. The pins may be held down through cam-face notches 93 engaging a, series of latch bars 94 which are pressed into the notches by springs 95.

In the plate 78 are twelve holes that can register with any one column of ms. Through these holes pass plungers 87 w hich are pivotally supported on bell-cranks 88. The latter are fulcrumed on a shaft 89 and at their free ends abut push pins 90, which slide in a support 91 mounted on the travell1ng frame 76. Also pivotally mounted on the fulcrum 89 is a universal-bar92which is spring pressed against the bell-cranks 88. The universal-bar by such pressure normally keeps the plungers raised and the push pins within their support. I

For advancing the travelling frame in a hole-spacing direction, there is a spring motor, not shown, to .which is attached a strap 96. The latter is connected to an arm 97 pivoted at 98 to the travelling frame 76. The hole-spacing mechanism includes an 'escapement-wheel99 attached to a pinion 100 andmounted on the travelling frame at 101.

The pinion rolls along a rack 102attached to the main frame 43. The escapementwheel has teeth with a suitable pitch which are engaged by a stepping dog 103 fixed on a shaft 104 and having a pin 105. A holding dog 106 is loosely mounted 9n the shaft 104 and alongside the stepping dog. The

holding dog has an arm 107, a pin 108 and a spring 109 which normally holds the dog in engagement.

When a push pin 90 is pro ected from its support 91, as will be explained hereinafter, the bell-crank 88 will move the universal-bar 92. The latter, through means not shown, vibrates the escapement-dogs, and

. hole-spaces the travelling frame each time a numeral-key or the space-bar is depressed.

. To permit column tabulation on the cardperforator, the usual means are provided to disengage the escapement mechanism. Such means include a lever 110 pivoted at 112 to swing at right angles to the holding dog 106. Said lever has a pin 111 which'projects to underlie the pin 108 in said holding dog. The lever 110 is normally held in disshaft 89. The bell-crank 113 has an extension 114 which overlies an arm 115 on the lever 110. When the bell-crank 113 is actu- I ated by a push pin 9 0, the extension 114 depresses the arm 115 of the lever 110, and the pm 111 will raise the pin 108 and disengage the holding dog. The lever 110 is thus maintained by a spring-pressed latch 116 whichis pivoted on an ear 117 of said lever. The latch in'turn is caught upon a plate 118 and is held thereby during a tabulating movement. At the termination of the latter, a'counter stop 119 trips the latch 116, thereby restoring the lever to normal position and permitting the holding dog 106 to re-engage the escapement-wheel. The counter stops are mounted on a notched bar 120 supported on the main frameby upsmooth perimeter, is a metal strip 130 which extends part way around the circumference of the. disc. p

Mounted on the typewriter-carriage .18 is a plate 131 havinga dependent ear 132 which is bored to'receive the stud 126. The plate is attached to the carriage by screws 133 which also hold an angle plate 134. The latter is slidably adjustable through slots 135 and is tapped near one end to receive screws 136 which hold an insulating block 137. On the latter rest brushes 138 which are secured to the blockby binding screws 139 to which wires 140- are attached. The top of the insulating block may be recessed along opposite edges to maintain the brushes in parallel ali ment and thus avoid short circuiting. he spur gear 125 and the insulating disc 129 are assembled on thestud 126 and are loosely held thereon by a washer 141 and its nut 142. The gear and disc are attached by countersunk screws 143. The plates 131 and 134, and the block 137 are attached to the carriage frame 18, and the stud is attached to the car through a nut 144. The brushes 138and the wires 140 are then attached to the block so that when assembled the parts will assume the relative positions shown in Figure 3.

As shown in Figure 3 also, the spur gear 125 abuts the metal strip 130. If thisgear were of metal a short circuit or ground'might result. The gear 125,therefore, may be made of fiber, or an insulator or spacer may be added between said gear and the insulating disc 129. Also shown in Figure 3 is a tongue 145 on the ear 132. This tongue functions as a stop to engage a lug 146 which is attached to an insulating plate 152 by .binding screws that also hold one wire of a normally open circuit. Other contacts 153 arealso carried by the insulating plate and are. attached to another wire in the same circuit. The last-mentioned wires, together with the-wires 140, are usually gathered into a cable 154 that may be of any I a convenient length.

Onepole of the brushes 138 is connected to a motor-generator 155 and to a series of electro-magnets or solenoids 156, while the other pple is CI'OSSrCODTlGCtBdtO all the contacts 151. rom each contact 153 a wire extends to either one or more electro-magnets. The

latter have cores 157 that become magnetized and are raised each time the solenoids are enwires 158 which are slidable inflexible tubes 159. The latter at one. end are attached to a case, not shown, which contains the electromagnets, and at the other end are fixed in thesupport 91.

This invention pertains particularly to the.

amounts may be typed. The figureson the lower portion of one work-form are often compiled with the figures of many other' forms. When this is done mechanically the primary factor. used is a card-perforating machine.

lVith this invention a-work-fbrm 21 is rearinserted in the typewriter, as shown by Figure 2. The work-form is then platen=rolled until its top line assumes a typing position,

and the data is typed in on its upper portion.

During this typing the usual line-spacing -movement has rotated the gears 122 and 125.

When the last line has beentyped on said upper portion, the attached insulating disc will then be in the position shown in Figure 3. During such typing the,card-p)erforating machine has not been in operation ecause not electrically connected to the typewriter.

When the work-form has been advanced into the zone of its lower portion by. the line- .spacing movement, the insulating disc will also have been advanced thereby in the direction shown by the arrow in Figure 3. Such advancement, which is slight,'will, of course,

advance the metal strip. 130 and'cause it to bridge the gap and close the electric circuit, which until then has been open between the two-brushes 138. The motor-generator 155 can then energize this circuit as soon as afsecond gap therein is closed. This second gap interlies the contacts 151 and 153.

When the space-bar or trip-key are depressed, or when a numeral-key 11 or the tabulator-key 33 are depressed, one of said second gaps is closed. Such closure serves 'to energize one or-more solenoids which then function to carry out the desired results .in

the card-perforating machine. Where a key bearing asingle numeral is depressed, one

solenoid acts to raise its core 157 which slides its push wire 158 throughthe tube 159. The

push wire in turn projects an abutting push pin against its bell-crank 88, which depresses its plunger 87. The lunger depresses a pin 84 which, through ltsnotch 93, is caught and held down by a spring-pressed latch-bar 94.

Said numeral-key having been released and --th e solenoid thus demagnetized, the springergized. These'cores are attached to push pressed universal-bar 92 will, restore said plunger, bell-crank, push pin, push wire, and

core to their former normal positions. Also,

upon the release of said key, the typewriter;

carriage is letter-spaced and the travelling frame 76 is hole-spaced through its universalbar 92. If a key having the letters of a word or syllable thereon be actuated the above cycles of setting and releasing are simultaneously inaugurated by two or more solenoids to set two or'more pins in any one column. This is accomplished by connectingtwo or more solenoid circuits to one of the contacts underlying the logotype-key.

By the successive depression of either the space-bar or tabulator-key with the numeralkeys, one horizontal line of figures is eventually typed in the proper columns 'on the 'lower portion or zone of the work-form.

Each numeral-key depressed has concurren tly set its correlative pin in each corresponding column of'the card-perforating machine. Underlying these' pins an imperforate card has been positioned on the die plate 69. A partial rotation of the shaft 44 raises the die-plate, and the card thereoncarries up the punches 70. The punches held down 'by.the pins 84-will then'perforate the card. Such punching may be automatic or may be initiated through the trip-key.

his

1 to function. It 'will thus lie inoperative untili chine left ready for A further rotation ofthe-shaft completes its intermittent one revolution, when thedieplate will drop to rest and the card will be released for removal. The card,-hav-ing been punched, the travelling frame 76 will automatically return to its starting point. During such return the pins will be released by well-known means the initiation of another cycle.

The cards which are-perforated may have printed captionsand column lines, or may be,

blank and be identified by a hole so positioned as to classify-them.v The cards are usually stacked in thecard-container 68. Before initiation of the typing operations the perforating machine is tripped to cause one revolution of its shaft which positions a card for an ensuing punching operation; After punching, the first card is advanced byv the ejector rolls 49 and drops into a card-recep-;

tacle 160. The first card is ejected simultaneously with the insertion of a second card which then lies positioned to be-punched.

During the above cycles of operation one line has been typed in the lower zone of the work-form 21 and one card has'been perforated. Other lines may be successively typed in said lower 'zone until the bottom edge of' the work-formis reached. For each of-said lines typed one card will be'correspondingly perforated. When-such typing has been completed the platen is rotated in a reverse direction to that of line-spacing. This willreturn the work-form to the position shown in Figure 2 where it'is free to be removed.

In reversing the rotation of'the platen, the' gears 122 and 125 willrevolve the insulat ing disc 129, and itsmetal strip 130 willfinally ceaseto bridge the gap between the brushes 138. .This circuit, therefore, is againbroken and the'perforating machine ceases an ensuing work-form has been inserted and advanced to the point where said metal strip again bridges said gap.

V This invention is most advantageously used when the gears .122 and 125 are proportioned according to the zones of the work-form used.

lVith a proper gear ratio there will be little lost motion in advancing or retracting the work-form between its insertion and its removal. This results when the' gear ratio causes the metal strip 130 to bridge the brushes 138 at just the right time. As the division between the upper and lower typing zones will vary on-diiferent styles of workforms, the gears are usually furnished to meet the requirements of the particular form to be.

typed.

lVith a gear form, it is still possible touse the same gears for another work-form which has a different locationof the division between the two zones. This may be done by substituting an insulatand the perforating ,ma-

tion correctly embodied in ratio proportioned for any one ing disc having a greater or a less diameter.

This insures *a longer or a shorter circumferential travel, wherebyits non-conducting surface may be made to register with the travel of the upper zone on the work-form; Another variation is possible by attaching the insulating disc ata different radial location on the gear 125. A further variation of the work-form zones may also be met by lengthening or shortening the metal strip 130.

When the rotating members of this invention have been properly proportioned to funcwith a given work-form, it is necessary that they always be correctly positioned for the insertion thereof. This is insured when the lug 146 as shown in Figure 2.

to thus abut these two members. Thereafter each successive work-form, having-the same length, willfwhenremoved, leave these two members in abutment. I This is because the forward travel of the work-form, after inabuts the tongue-T145, Before insertingan initial work-form, therefore, care is taken sertion, is always retraced in full before removal. The work-form is both inserted and' removed, therefore, when in the location shown in Figure 2.. j p

The foregoing description covers theme of a comparatively short work-form which'is card-perforating operations are desired.

removed, and in which the having captions printed operations are made possible Q be positioned opposite the i When using a continuous work-form the lug 146 would be removed from the gear 125 to permit complete revolutions in one direc-v tion of said gear and its attached insulating disc. Said disc also would first be properly registered with the alternate zones on the continuous work-form. This is accomplished by releasing the rolls are again made operative to hold the form. This invention, therefore, is not limited to the useof an. insulating disc having one metal strip. It could, in fact, have two or even more. 1

It is desirable to provide means for .fine adjustment in order to accurately time the switch. This end may be simply attained by adjusting the brush-carrying angular plate j 130 i l 134, as indicatedby the screw-and -slot COD? feed-rolls andproperly positiOning said form. After setting, the feed- [contact-as it travels past the same, means Y and .means aving thus described. my'invention, I

1. Inga combined typewriting and carda perforating machine,"said typewriting ma- 10 chine having a rotary platen and means for -electrically' controlling said perforating machine, in combination, a master switch for,

a controlling the working current, while a selected zone of a work-sheet crosses the typing fline, said switch including a traveling contact member-,and relatively stationary poles to co-operate' therewith to make and break for transmitting movement from-the rotary platen to said contact member to operate the same, and means for timing the'travel of said contact member with the movement of the platen, so as to close the switch during a predetermined interval of platen rotation to coincide with-the selected zone upon the work-sheet.

v 2.-; In acombined typewriting and cardperforating machine, said typewriting machine having a rotary platen, a platen-frame, a platen-carriage and means for electrically controlling the perforating machine, incombination, a master switch to be mounted upon the platen-frame, for'controlling the working current while a selectedzone of a work-sheet crosses the typing line, movement-transmitting means between the rotary platen and said switch for positively controlling the'latter from the platen, means for timing the operation of the switch, so as to close the same during a predetermined interval of platen rotation to coincide with said selected zone, and flexible connections to conduct the working current over-said switch while the carriage is freely movable.

In a combined typewriting and cardperforating machine, said typewriting machine having a rotary platen, a platen-frame for electrically controlling said perforating machine, in combination, a rotary master switch mounted upon the platenframe for controlling the working current while a selected zone of a work-sheet crosses the'typing line, a train of gears between a platen-shaft and said rotary switch to allow the platen to operate the switch, and means for timing the operation of the switch with the rotation of the platen, so as to close the switch during a predetermined interval 0 platen rotation to coincide with said selected zone upon the work-sheet; 4. In a combined typewriting and cardperforating machine, said typewriting machine having a rotary platen and means for electrically controlling said perforating machine, in combination, a rotary master switch for controlling the working current,

includin a rotary contact member formed with a iskof.insulating material and a metal contact face thereon, and including relatively stationary brushes to co-operate with said contact member to periodically make and break contact, and means for positively transmitting platen rotation to actuate said contact member in a manner to close the switch during a predetermined interval of platen rotation to coincide with a selected zone upon the work-sheet. v

5. In a combined typewriting and cardperforating machine, said typewriting machine having a rotary platen, a platen-frame and means for electrically controlling the 6. In a combined typewriting and cardperforating machine, said typewritin machine having a rotary platen, a platenrame and means for electrically controlling the' perforating machine, in combination, a master switch mounted upon the platen-frame for controlling the working current while a selected zone of a work-sheet crosses the typing line, a bracket for mounting the switch upon the platen-frame adjacent the platenshaft, a gear associated with the switch, and another gear mounted upon the platen-shaft, said gears to be co-operatively engaged when the bracket is in place to positively control the switch, so as to close the same during a predetermined interval of platen rotation to coincide with said selected zone upon the work-sheet.

7. .In a combined typewriting and cardperforating machine, said typewriting machine having a rotary platen and means for electrically controlling the perforating machine, in combination, a rotary master switch for controlling the working current while a selected zone of a work-sheet passes the typing line, said switch including a rotary conf tact member, relatively stationary brushes to co-operate therewith to make and break contact and means for adjusting said brushes relatively to said contact member to retard or advance the action thereof, and means for controlling the switch from the platen, so as to close the same during a predetermined interval of platen rotation to coincide with said selected zone upon the work-sheet, said brushes adjustable to correctly time the switch.

8. In a combined typewriting and cardpertorating machine, said typewriting machine having a platen, a platen-carriage and means for electrically controlling said perforating machine, including a master switch geared directly to said platen, means for controlling the switch from the platen line-space movements in order to close the circuit while a selected zone of a work-sheet is being written, so as to concurrently operate the perforating machine, and adjustable means for timing the operation of the switch with the platen movement.

9. In a combined typewriter and cardperforator, a platen for the typewriter, and electric means for controlling said perforator by a line-spacing movement of said platen, including a switch, and also including mechanism connecting the switch to said platen and automatically efiective to operate the switch and stop andstart the perforator.

10. In a. combined typewriter and cardperforator, a platen for the typewriter, a working circuit, a switch therefor, and gearing connecting the platen to said switch to control the perforator from the line-space movements of said platen during the time predetermined zones of a work-sheet occupy the typing line of said typewriter.

11. In a combined typewriter and cardperforator, a platen for the typewriter, an electric circuit for operatively connecting the perforator with said typewriter, a switch in said circuit, and mechanism connecting the switch with said platen, including means for closing said switch during predetermined portions of line-space travel of said platen.

12. The combination with a card-perforator and a typewriter having a platen, of 0011- necting means between the pertorator and the typewriter for controlling the perforator by the typewriter through the line-spacing movements of said platen, said controlling means including a movable member responsive to said platen movements, and operative to put the perforator into and out of'operation.

13. The combination with a card-perforator and a typewriter having a platen, of connecting means between the perforator and the typewriter for controlling the pertorator by the typewriter through the line-spacing movements of said platen,'said controlling means including a movable member responsive tosaid platen movements, and also including a device interpolated between the platen and the movable member to determine the distance traveled by the platen, said movable member being automatically effector and a typewriter having a revoluble platen, of connecting means between the perfora-' tor and the typewriter for controlling the perforator by the typewriter through the line-spacing movements of said platen, said controlling means includinga rotatable member responsive to said platen movements, and also including gearing interpolated between the platen and the rotatable member to predetermine the relative peripheral travel of said member as compared with the line-spacing travel of the platen, said rotatable member being automatically effective to put the perforator into and out of operation.

15. The combination with a card-perforator and a typewriter having a platen, of connecting means between the perforator and the'typewriter for controlling the perforator by the typewriter through the line-spacing movements of said platen, said controlling means including a member responsive to said platen movement-s and effective to put the perforator into and out of operation, and means for adjusting the controlling member with reference to said platen.

ALFRED G. F. KUROWSKI.

tive to put the perforator into and out of operation.

14. The combination with a card-perfora-

Images