US2021302A

US2021302A - Perforating apparatus

Info

Publication number: US2021302A
Application number: US611013A
Authority: US
Inventors: John C Gates
Original assignee: Western Electric Co Inc
Current assignee: AT&T Corp
Priority date: 1932-05-13
Filing date: 1932-05-13
Publication date: 1935-11-19
Anticipated expiration: 1952-11-19

Description

NOV. 19, 1935. c GATE PERFQRATING APPARATUS Filed May 15, i932 6 Sheets-Sheet 1 Nov. 19, 1935. JQGATES 2,021,302 PERFORATING APPARATUS Filed May 13, 1932 s Sheets-Sheet 2 Nov. 19, 1935. J, Q GATE 2,021,302

PERFORATING APPARATUS Filed May 15, 1932 6 Shee ts-Sheet 5 4 64 L /39 0000 00000 O 0 Q 0 0'0 0 O 0 O O NOV. 19, 1935. c GATES 2,021,302

PERFORATING APPARATUS Filed May 13, 1932 6 Sheets$heet 4 #4 MM ATTORNEY Nov. 19, 1935. J. c. GATES 2,021,302

PERFORATING APPARATUS Filed May 15, 1932 e Sheets-Sheet 5 Nov. 19, 1935. C GATES 2,021,302

PERFORATING APPARATUS Filed May 13. 1932 6 Sheets-Sheet 6 l I A P z A Patented Nov. 19, 1935 UNITED STATES PATENT OFFICE PERFORATING APPARATUS Application May 13, 1932, Serial No. 611,013

11 Claim.

This invention relates to perforating apparatus, and more particularly to a manual control device for a pneumatically settable card duplicating apparatus.

5 It is an object of the present invention to provide a pneumatically settable recording apparatus having dual control means.

In accordance with one embodiment of the invention, a perforating apparatus is provided 10 for making duplicates of a supply of record cards having information marked therein wherein the information in the cards to be duplicated is set up in a. perforator by directing air under pressure through apertures in the card to be duplicated 15 for actuating settable pistons and wherein an auxiliary control is provided whereby the informatlon in certain of the columns of the cards being duplicated is rendered ineffective to control the settable pistons and information is set 20 into the perforators by the operation of manually actuatable keys.

These and other objects of the invention will be apparent from the following detailed description, when considered in connection with the 25 accompanying drawings, wherein Fig. 1 is a side .elevational view of a record card duplicating apparatus embodying the novel features of the invention; v

Fig. 2 is an enlarged fragmentary vertical sec- 30 tional view taken along the line 2-2 of Fig. 1 in the direction of the arrows, parts being broken away to show more clearly the details of construction;

Fig. 3 is a fragmentary vertical sectional view 35 taken substantially along the line 3-3 of Fig. 2

in the direction of the arrows;

Figs. 4 and 5 are fragmentary horizontal sectional views taken along the lines 4--4 and 5-5, respectively, of Fig. 3 in the direction of the 40 arrows;

Figs. 6 and 7 are fragmentary vertical sectional views taken along the lines 6-6 and 1-1, respectively, of Fig. 3 in the direction of the arrows;

Fig. 8 is a fragmentary plan view of the keys 45 for manually controlling the information marked in cards looking in the direction of the arrows 8--8-shown in Fig. 1;-

Fig. 9 is a vertical sectional view taken along the line 9-9 of Fig. 8 in the direction of the arrows, and

Fig. 10 is a fragmentary sectional view taken along the line l0-I0 of Fig. 8 in the direction of the arrows.

Referring now to the drawings wherein like 55 reference characters designate the same parts throughout the several views, power for driving the various movable parts of the mechanism is supplied from the motor (not shown) through a belt I!) (Figs. 2, 6, and 7) which drives a pulley II fixed to a sleeve I2. The sleeve I2 is freely rotatable upon a shaft 13, suitably supported in a manner to be described hereinafter, being held against lateral movement thereon by collars l4 and I5 (Fig. 6) pinned to the shaft and has formed integrally therewith a worm gear 16 which meshes with a worm gear 11 fixed to one end of a shaft 18. Mounted upon the other end of the shaft l8 (Fig. 1) is a worm gear 19 which .meshes with a worm gear 20, fixed to a stud shaft 2!, and carrying a beveled'gear 22. Meshing with the beveled gear 22 is a beveled gear 32 mounted on one end of a shaft 33 which carries intermediate its ends a beveled gear 34 for driving a beveled gear 35 pinned to a shaft 36. The shaft 36 carries beveled gears 31, 38, 39 and 40 which mesh with and drive beveled gears 4|, 42, 43 and 44, mounted on

shafts

45, 46, 41 and 48, respectively.

The

shafts

45, 46, 41 and 48 extend transversely through the machine and are journaled in side plates 49 mounted upon a base 56 and have enlarged portions 66 (Figs. 2 and 3) which serve as lower card feed rollers for advancing a card to be perforated from a magazine 61 to a hopper 59 (Fig. 1). Cooperating with the enlarged portions 63 of the

shafts

45, 46, 41 and 48 are a plurality of spring pressed upper card feed rollers 62 and 63 (Figs. 1, 2 and 3) which are not positively driven and which are normally urged downwardly into contact with the enlarged portions 60. The upper

card feed rollers

62 and 63 are of a known type and a detailed description thereof is not believed to be necessary.

Pinned to the upper end of the shaft 33 (Fig. 1) is a beveled gear 64 meshing with a beveled gear 65 secured to a shaft 66 suitably journaled on the side plate 49 and carrying beveled gears 61, 68, 69 and 15. Meshing with the

beveled gears

61, 68, 69 and 10 are beveled gears ll, 12, 13 and 14, respectively, mounted upon

shafts

15, 16, 11 and 18, respectively. The shafts 15 and 1B are journaled in the side plates 49 and extend through the entire machine, whereas the

shafts

16 and 11 are stud shafts journaled in one of the side plates 49. Formed integrally with the shafts 15 and 18 are a plurality of enlarged portions 90 (Fig. 1) which serve as lower card feed rollers for advancing a card to be perforated from a magazine 9| to ahopper 92 (Fig. 1) and formed integrally with the

shafts

16 and 11 are similar enlarged portions 93 which cooperate with the rollers 90 in advancing cards from the magazine 9| to the hopper 92.

The shaft 18 carries on its right end (Fig. 2) a beveled gear 94 which meshes with a beveled gear 95 mounted upon a shaft 96 journaled. upon the right hand side-plate 49 (Fig. 2) for driving stud shafts similar to the

stud shafts

16 and 11 which carry card feed rollers 93. Cooperating with the enlarged

portions

90 and 93 are a plurality of spring pressed upper card feed rollers 91 and 98 (Figs. 1, 2, 3 and 4) similar to the upper

card feed rollers

62 and 63.

Cards to be advanced by the card feed rollers from the magazines 6I and 9| to the hoppers 59 and 92 are picked up one at a time from the bottom of their respective magazines by card feed knives I09 and H0, respectively, positioned in the bottom of the magazines and connected together by plates III to which are fixed pins H2 extending outwardly from the plates I I I through slots H3 in the side plates 49. The pins H2 extend into camming slots H4 formed in the arms of a bifurcated lever II5 oscillatable about a shaft I I6 secured to the side plates'49. Ihe lower end of the bifurcated lever H5 slotted at H1 to receive a camming pin H3 mounted upon the end of a reciprocable lever H9 slidable in a bracket I20 positioned upon the base 50. The end of the reciprocable lever H9 opposite to the one which holds the camming pin H3 has a roller I2I positioned thereon and extending into a cam groove I22 formed in a cam I23 mounted upon the shaft I3. Upon rotation of the shaft I3 the reciprocable lever II9 will be reciprocated and will cause the card feed knives I09 and H to engage the bottom card of supplies'of cards I35 and I36, respectively, to advance them in their associated card feed rollers, suitable mechanism being provided at I31 and I38 topermit only one m each of the supplies I35 and I36. The sh'a I3 is journaled in the side plates 49 and has 'pinned thereto-a driven clutch member I24 (Fig'sm, 6 and 7) Cooperating with the driven clutch member I24 is a driving clutch member I25 which is slidable longitudinally of the shaft I3 and which is pro vided with horizontally extending arms I26 which are slidable in apertures I21 in the pulley II. The driving clutch member I25 rotates with the pulley H and is provided with a circumferentially extending groove I26 into which extend the arms of a bifurcated lever I29 (Figs. 3, 6 and '7) pinned to a shaft I30 journaled upon the base 50 and normally urged to rotate in a counterclockwise direction (Figs. 2, 6 and 7) by a coil spring I3I (Fig. 3), thereby to hold the driving clutch member I25 out of engagement with the driven clutch member I24. Also pinned to the shaft I30 is a vertically extending control lever I32 (Figs. 2, 3 and 7) which will normally be held in the position shown .in Figs. 2 and 7 by the spring I3I but which may be moved to the right (Figs. 2 and 7) to rock the shaft I30 in a clockwise direction and through the bifurcated lever I29 move the driving clutch member I25 into engagement with the driven clutch member I24. The lever I32 has cooperating therewith a flexible shaft commonly known as a Bowdin" wire I33 for moving it to the right (Fig. 7). The Bowdin" wire I33 is enclosed in a casing I34 secured to a bracket I45 mounted upon the base 50 and the Bowdin wire may be operated by a suitable push button (not shown) of a known type conveniently mounted for operation by an operator. The lever I32, upon being moved to the right (Fig. 7) will engage a latch member I46, pivoted to the side plate 49 at I41 and normally urged to rotate about its pivot in a counterclockwise direction into engagement with a stop member I48 by a spring I49. When the lever I32 is rocked to the right (Fig. 7) it will lock the driving clutch member I25 in engagement with the driven clutch member I24, due to the engagement of the end of the control lever I32 with a stop I50 formed on the latch member I46, thereby to cause the shaft I3 to rotate continuously until the latch member I46 is released from the lever I32. A second Bowdin wire mechanism indicated generally at I5I (Figs. 2, 3 and 7) and mounted upon the bracket I45 may be actuated to move the latch member I46 upwardly out of engagement with the lever I32, thereby to permit the spring I49 to return the lever I32 to its normal position as shown in Figs. 2 and 7 for moving the driving clutch member I25 out of engagement with the driven clutch member I24.

Each card as it is advanced from the supply of cards I36 passes under a pneumatic head I39 (Figs. 1, 2, 3 and 4) which is reciprocably mounted in the side plates 49 and which is reciprocated in timed relation to the advancement of cards from the magazines to the hoppers. A pair of links I40 (Figs. 1 and 2) are fixed to the pneumatic head I 39 at I and carry at their lower ends cam rollers I42 engaging in cam grooves I43, formed in cams I44 fixed to the shaft I3. In each revolution of the shaft I3 the pneumatic head I 39 will be moved downwardly to engage a card advanced thereunder from the magazine 9| and will thereafter be raised to the position shown in Figs. 2 and 3.

Carried by the pneumatic head I39 is a card stop bracket I56 (Figs. 7 and 3) to which there is ailixed a card stop I51 which is adapted upon movement of the pneumatic head I39 downwardly to move into the path of a card being advanced from the magazine 9i to stop the card in position under the head I39. Shortly after the pneumatic head I39 is moved downwardly to stop a card in position thereunder, the pneumatic head will engage the card and then a camming pin I58 (Fig. 1) mounted upon one of the cams I44 will engage with and move a valve operating lever I59 in a counterclockwise direction (Fig. 1) to open a valve I60 and permit air under pressure from a source (not shown) to pass from a pipe I H into a pipe I62 which is interconnected with the pneumatic head I39 by a pipe I63 and a flexible connection I64. A blast of air under pressure will thus be delivered through a port I65 (Fig. 3) formed in the pneumatic head I39 and into the interior of the head. The upper surface of the head I39 is dome-shaped and extends downwardly to a grid I66 which is scaled thereto and which is provided with 45 columns of apertures I61, there being 12 apertures in each column. These apertures I61 are so positioned as to be in direct alignment with every possible hole position of a statistical card advanced from the supply of cards I36 when the card is stopped under the pneumatic head I 39, and the blast of air directed from the pipe I6I upon the opening of the vaive I60 will be directed through the grid and through all of the holes in a card, a duplicate of which is to be made.

Shortly after the opening of the valve I60 due to the engagement of the camming pin I58 with the valve operating lever I59, the camming pin will engage an upwardly extending arm I68 of a reciprocable lever I69 slidably mounted on the base 50 by means of a bracket. I10 and having an arm I1I thereof engaging a downwardly extending portion I12 of the valve actuating lever I59. When the camming pin I58 strikes the arm I68 of the lever I69, it will move the lever. I69 to the left (Fig. 1) thereby to rock the valve operating lever I59 in a clockwise direction (Fig. 1) to close the valve. I60 and shut off the supply of air under pressure from the pipe I62.

In direct vertical alignment with the apertures I61 in the grid I66 are a plurality of apertures or ports I13 in a grid I14 which communicate with aplurality of apertures I86 formed in a valve block I81. Positioned for vertically reciprocable movement in apertures I88 formed in a cylinder block I89 are a plurality of pistons I90, and interconnecting the apertures in the cylinder block and the apertures in the valve block I 81 are a plurality of pipes I9I through which air may be directed to actuate the pistons I90.

The valve block I81 as shown in Figs. 2 and 3 has slide valves I92 slidably mounted therein provided with a plurality of ports I for interconnecting the apertures I13 with their corresponding apertures I86 when the slide valves are in their normal position as shown in Fig. 3. However, the slide valves I92 may, when it is desired to disregard some of the information per-. forated in a card to be duplicated, be moved to the right (Fig. 3) to move the apertures in the valves out of alignment with the apertures I13 and I86. In the embodiment of the invention disclosed herein there are provided ten slide valves for controlling the columns of perforations associated with'columns 31 to 40 of a 45 column statistical card. In a manner to be described hereinafter and in accordance with the present invention these particular columns associated with columns 31 to 40 of the statistical cards being duplicated maybe controlled to perforate in the duplicate card being perforated, information not present in the card being duplicated.

The pistons I are normally held in their uppermost position as shown in Fig. 3 by coil springs I93 which encircle a portion of the pistons I90 and are so positioned as to engage the underside of an enlarged portion I94 of the piston and the upper surface of a guide plate I95. The lower portions of the pistons I90 are slidable in theguide plate I95 and each of them is provided with a notch I96 so that when a piston or pistons in a column of pistons is moved downwardly it or they will be locked in their downward position due to the engagement of the notch I96 with a spring pressed latch plate I91 provided with a plurality of apertures I98 corresponding in number to the number of pistons. There is provided one latch plate I91 for each column of pistons and these plates are normally urged to the left (Fig. 3) by contractile springs I99 which normally tend to move them into engagement with a stop member 200 extending transversely to the direction of movement of the latch plates I91 to prevent them from moving to the left (Fig. 3) beyond a predetermined point where a tapered edge 20I formed on each of the pistons may engage one edge of its associated aperture I 98 to cam the latch plate I91 to the right (Fig. 3) until the plate engages in the notches I96. If it is desired to have any column of a duplicate statistical record card left unperforated despite the fact that the record being duplicated has perforations in that particular column-the latch plate I91 for that column may be latched in its right hand position (Fig, 3) by means of manually settable stops 202 of which there is provided one for each 5 latch plate and which are normally positioned in their inoperative or upper position as shown in full lines in Fig. 3.

The pistons I90, upon being actuated to move downwardly, will be latched in their downward position by the latch plates I91 for a predetermined time in the cycle of the mechanism to control perforating pins 203 (Figs. 2 and 3) of which there is provided one for each possible card hole in a statistical record card having 45 15 columns with 12 possible card holes in each column. After the pistons-J90 have controlled the operation of the perforating pins 203, as described hereinafter, the pistons will all be simultaneously released to permit their associated 20 springs I93 to move them to their upper position as shown in Fig. 3 due to the movement of all of the latch plates I91 to the right (Fig. 3)

.by a release bar 204 common to all of the latch plates I91 engaging release pins 205 fixed to each 25 of the latch plates. The release bar 204 is fixed to the ends of a pair of levers 206 pinned to a shaft 201 journaled in the side plates 49 and having pinned thereto a lever 208 shown in dot and dash lines on Fig. 3 and dotted lines in Fig. 30 1. The lever 208 carries at its lower end (Fig. 1)

a cam roller 209 which rides in a cam groove 2I0 in a cam 2II fixed to the shaft I3 so that once in each revolution of the shaft I3 the shaft 201 will be oscillated to move all of the latch plates 35 I91 (Fig. 3) to the right to release their associated pistons I90.

The perforating pins 203 are each provided with a head 22I, the lower edges of which rest upon a guide plate 222 for normally supporting 4' the perforating pins 203 in the position shown in Figs. 2 and 3, the guide plate 222 being provided with a plurality of apertures 223 in which the perforating pins 203 are slidable and being supported between the side plates 49.

A guide plate and die unit indicated generally by the numeral 224 is reciprocably mounted in the side plates 49 at 225 and comprises upper and lower guide plates 226 and 221, respectively, and a die plate 228. The

guide plates

226 and 221 and 50 the die plate 228 are each provided with apertures in direct vertical alignment with the apertures in the guide plate 222 in which the perforating pins 203 may move and the guide plate 221 and die plate 228 are spaced apart sufliciently to per- 55 mit the passage of a statistical record card therebetween, suitable slots being cut in all of the plates to receive the card feed rollers 00 and 63.

A card which has been advanced under the perforating pins 203 will be stopped thereunder 60 simultaneously with the stopping of the card moving under the pneumatic head I39 by a card stop 229 formed integrally with downwardly extending portions 230 of the card stop bracket I56. The guide plate and die unit 224 has a pair 65 of actuating levers 23I secured thereto, the lower ends of which carry cam rollers 232 which extend into a cam groove 233 formed in a cam 234 mounted on the shaft I3 (Fig. 2). Each time the shaft I3 passes through one complete revolu- 70 tion the guide plate and die unit 224 will be moved upwardly and-a card positioned therein will raise "all'of the perforating pins 203 with it, except blast of air being directed at the upper surface thereof, and thus pistons which are depressed will cause the perforating pins associated therewith to perforate the record card positioned in the guide plate and die unit 224.

The invention has been described as a machine for perforating statistical record cards having 45 columns of possible card holes, and in such a device there will of necessity be provided 45 columns of perforating pins with 12 pins in each column, and a corresponding number of pistons I99. The invention contemplates a perforating mechanism, which may be used as a duplicating machine and which is provided with mechanim for manually controlling the perforation of predetermined columns on the record cards which will form the duplicate record whether or not corresponding columns of the card being duplicated has information perforated therein. In order to accomplish this, there has been provided a keyboard 249 (Figs. 1, 8, 9 and 10) having 10 columns of keys 241 with 12 keys in each column for controlling the perforations inscribed in duplicate cards in the 31st and th columns thereof. The keyboard 246 (Fig. 1) is mounted upon brackets 248 secured to the base 59 and comprises as shown in Figs. 8, 9 and 10, a valve block 249 in which the keys 241 are slidably mounted. The valve block 249 is provided with a. passageway 259 extending transversely of the 10 columns of keys and connected by a pipe 25! to the pipe I62 running to the valve I99. Communicating with the passageway 259 are a series of passageways 252 extending longitudinally of the columns of the keys provided with ports 253 adjacent each key 241, thereby to direct air under pressure from a source (not shown) through the valve I69 to each key 241 on the keyboard whenever the valve I59 is opened by the camming pin I58. -Each of the keys 241 comprises a valve portion 254 slidably positioned in an aperture 259 and having a port 255 formed therein communi-- eating with a vertically extending passage 259 which, upon depression of the key, will interconnect the main supply of air under pressure to a pipe 251 individual to each of the keys. The valve portion 254 of the keys is normally urged upwardly into engagement with a stop plate 259, of which there is provided one for each column of keys, by a coil spring 259 engaging the lower surface of the valve portion 254 and a shoulder 26I formed in the aperture 258. The plates 259 are normally urged to the right (Figs. 8 and 9) by compression springs 252 mounted in the valve blocks and engaging a depending portion 253 of the plates 259,'retaining screws 254 threadedly engaging the valve block 249 being provided for extending through slots 295 formed in the plates 259 so that the plates will be freely slidable upon the upper surface of the blocks 249. Interconnecting the buttons of the keys 241 and the valve portion 254 is a shank portion 216 which slides in an aperture 219 in the plate 259 and which has an enlarged portion 211 formed thereon for camming the plate 249 to the left (Fig. 9) upon depression of a. key, releasing any other key which may have been depressed in that column and thereafter engaging the under surface of the plate 259 to lock the last key actuated in a particular column in its downward position. Any key locked in its downward position will interconnect its port 255 with the associated port 253 for supplying air through the pipe 251 associated therewith to the pipe I9l associated with the particular key actuated.

In the event that there are no perforations in a record card to be duplicated in the particular rows corresponding to the rows in a duplicate record in which it is desired to perforate information under manual control, the depression of a key on the keyboard 245 prior to the feeding of cards under the pneumatic head I39 will cause a perforation to be made in the duplicate card in a position corresponding to the key actuated. However, if the cards being duplicated have information therein in the rows where it is desired to have a manual control on the duplicate card, it is necessary to render ineffective the automatic control of the pistons I99, and therefore there is provided in the valve block I81, the slide valve I92, whereby the control of the perforations in the duplicate card in the 31st to 49th columns thereof, may be effected by the keys 241.

Mechanism has been provided as shown in Figs. 2, 3, 4, 5 and 7, for stopping the feeding of cards to the perforating mechanism and the pneumatic head whenever the supply of cards in either of the magazines 6| or III has been exhausted. This mechanism comprises a pair of card engaging levers 399 and 39I which are carried by the card stops 229 and I56, respectively, which move,downwardly to stop a card simultaneously. As shown in Figs. 3 and 7, the card engaging levers 399 and SM have an inverted U- shaped formation at their upper ends, the left arms of which (Figs. 3 and 7) are adapted to .move into apertures 392 and 393, respectively,

when there is no card in the perforating mechan'sm orunder the pneumatic head I39. The card engaging levers 399 and 39I are normally urged downwardly by coil springs 394 and 395 positioned therearound and engaging shoulders 399 and 391, respectively, formed on the card engaging levers and also engaging the under surface of a bracket 398 formed on the downwardly extending portion 239 of the card stop bracket I59, pins 399 and 3I9 being passed through the card engaging levers 399 and 3M, respectively, to engage the brackets 399 and I55, respectively, to prevent the springs 394 and 395 from moving the levers 399 and 39I downwardly beyond a predetermined point. The lower ends of the card engaging levers 399 and 39I are in direct vertical alignment with the latch member I46 and in the event that there is no card under the pneumatic head I39, the card stop bracket I55, in moving downwardly, will cause the end of the card engaging lever to engage the end of the latch member I to rock it (Figs. 2 and 7) in a clockwise direction to release the lever I32, thereby permitting the spring I3I to move the driving clutch member I 25 out of engagement with the driven clutch member I24, to stop the rotation of the shaft I3. In a similar manner if there is no card present in the perforating mechanism, the lever 399 will move downwardly into its associated aperture 392 and actuate the latch member I45 to stop all of the mechanism except the card feed rollers which are continuously rotated. However, if there are cards under the pneumatic head I39 and in the perforating mechanism, neither of the card engaginglevers 399 or SM will be moved downwardly into engagement with the latch member I49 and the machine will continue to withdraw cards from the magazines BI and 9| until the supply of cards in either one or the other of the magazines is exhausted, or, until the Bowdin wire I5I is actuated manually to stop the machine.

A better understanding of the mechanism'will be had from the following brief description of the operation thereof.

Let it be assumed that it is desired to perforate in a group of statistical record cards a duplicate of the information in certain rows of a series of other cards and in addition it is desired to perforate in the new group of cards certain constant information which is common to a plurality of cards. The embodiment of the invention disclosed herein is of a type in which the 31st to 40th columns of the duplicate cards may have information perforated therein not found in the cards being duplicated, and therefore let it be assumed that it is desired to perforate in the group of cards being prepared the

numerals

2, 3 and 8, in the 31st, 33rd and 35th columns of the cards. This may be accomplished regardless of whether the cards being duplicated have information perforated in the 31st, 33rd and 35th rows or not. A supply of blank record cards should be deposited in the magazine 6I and the supply of cards which it is desired toduplicate should be placed in the magazine 9I. The slide valves I92 associated with the 31st, 33rd and 35th columns of the record card should then be moved to their extreme right hand position (Fig. 3) so that in the event that there is information in the cards to be duplicated which it is not desired to have perforated in the duplicate cards, the 31st, 33rd and 35th columns of the cards to be duplicated will not control the pistons associated with those columns. Before the machine is started to perform the duplicating operations, the keys 241 associated with the

numbers

2, 3 and 8 in the columns of keys associated with the 31st, 33rd and 35th columns of the record cards should be depressed to a position where the stop plates 259 associated'therewith will lock the keys in their downward position to interconnect their ports 255 with the ports 253 communicating with the passages 252 and 25I.

After the information which is common to a plurality of duplicate .cards and which is not perforated in the cards being duplicated has been set up on the keys 241, the Bowdin wire I33 may be actuated to move the lever I32 to the right (Fig. '1) to a position where it will be latched by the latch member I46, thereby to permit the driving clutch member I25 to beheld in engagement with the driven-clutch member I24 for rotating the shaft I3. Early in the cycle of rotation of the shaft I3 the cam lever II9 will be moved to the left (Fig. 1) and shortly thereafter moved to the right to rock the bifurcated lever H5 and thereby to cause the card picker knives I99 and H9 to feed a card from the bottom of each of the magazines 6| and 9| into engagement with their associated card feed rollers which will advance the cards into the perforating mechanism and under the pneumatic head I39, respectively. The cards fromthe supplies I36 and I35 upon reaching a position under the pneumatic head I39 and in the perforating mechanism will be stopped in these positions due to the movement of the card stops I51 and 229 downwardly into the path of the cards, the card stops both being interconnected with the pneumatic head I39 which at this time in the cycle of rotation of the shaft I3 is driven downwardly to engage the card advanced thereto from the supply of cards I36. As soon as the cards are stopped in the perforating mechanism and under the pneumatic head I39, the camming pin I58 will engage the valve lever I59 to open the valve I69 and permit air under pressure to be directed through the pipe I62 and I63 into the pneumatic head I39 and through the apertures in the card held under the pneumatic head I39 to actuate the pistons I99 associated with the card positions in which perfora- 5 tions occur to drive the pistons downwardly and cam the latch plate I91 to the right against the tension of the springs I99. The pistons I99 will be locked in their downward position by their associated plates I91 engaging the notches I96 10 formed in the pistons in all of the rows where the slide valves I92 have not been operated, and in the rows where the slide valves I92 have been operated the pistons will not be affected unless a key or keys' 241 on the keyboard 246 associated 15 with those particular rows have been depressed. In the problem selected for illustration, the slide valves I92 have been moved to their right hand position (Fig. 3) to render ineffective for control by the card being duplicated those pistons 20 associated with the 31st, 33rd and 35th columns of the, record card. The keys representing the

digits

2, 3 and 8 in the 31st, 33rd and 35th columns of the record card have been depressed and when the valve I69 is opened, air under 25 pressure will be directed through the Pipe 25I and

passages

259 and 252 through the

ports

253 and 255 associated with the actuated keys representing the

digits

2, 3 and 8 in the 31st, 33rd and 35th columns of the card and through the pipes 30 251 to the pipes I9I, thereby to actuate the pistons representing the

digits

2, 3 and 8 associated with the 31st, 33rd and 35th columns of the record cards. These pistons will also be locked in their downward position by their associated 35 latch plates I91, simultaneously with the locking of the pistons associated with the other columns of the card being duplicated.

After the pistons I99 have been locked in their downward position, the camming pin I59 will 40 move the reciprocable lever I69 to the left (Fig. 1) to close the valve I69 and immediately thereafter the cams 234 will raise the die plate 228 and guide plates 226 and'221 upwardly. A card positioned between the die plate 228 and guide 45 plate 221 will move all of the perforating pins 293 upwardly except those pins which engage the lower ends of the pistons I99 which have ,been locked in their downward position. Those perforating pins 293 which are restrained against upward movement with the die plate by the pistons I90, will be driven through the card held upon the die plate and will perforate the card in the position representing the

digits

2, 3 and 8 in the 31st, 33rd and 35th columns, respectively, and will also perforate the card with all of the information in the card withdrawn from the supply of cards I36 except any information which occurred in the 31st, 33rd and 35th columns thereof. (it

After the record card has been perforated in this manner, the cams 234 will move the guide plate and die unit 224 downwardly to withdraw the perforating pins 293 from the card and thereupon the pneumatic head I39 will be cammed upwardly by its cams I44 and the cards under the head I39 and between the guide plate 221 and die plate 228 will be released by their respective card stops I51 and 229 whereupon the card being duplicated and the duplicate cards will be di- 7 withdrawn from the supply I36, and in accordance with the information set up by the operation of the keys 241. The shaft l3 willcontinue to rotate until the machine is stopped due to the operation of the "Bowdin" wire |5| or until the supply of cards in either of the magazines 6| or 9| is exhausted and one of the card engaging levers 300 or 3M actuates the latch member I46 to automatically stop the machine.

Although a specific embodiment of the invention has been described hereinbefore, it is to be understood that the structure described is capable of many modifications and alterations without departing from the scope of the invention which is to be limited only by the scope of the appended claims.

What is claimed is:

1. A perforating apparatus comprising means for directing air pressure through apertures representing information in a record member to take information from the record member, means responsive to the air directed through the record member to perforate a duplicate of said information in a second record member, means for rendering the air under pressure directed through the apertures ineffective to control certain of the perforating means, and manually controlled means for controlling certain of the perforating means.

2. In a pneumatic card duplicating mechanism, a plurality of perforating members, a plurality of pistons controllable by perforations in a record member for controlling the operation of said perforating members, means for rendering certain of said pistons irresponsive to perforations in said record member, and manually operable means for controlling said last mentioned pistons.

3. In a perforating mechanism, a plurality of perforators, a plurality of pistons for controlling the operation of said perforators, means for directing air under pressure through a record member to control selected ones of said pistons, and manually operable means for selectively controlling others of said pistons.

4. In a perforating apparatus, a source of air under pressure, pistons actuatable by said air under pressure, manually operable means, means for selectively directing the air pressure through apertures in a record card or through said manually operable means to said pistons, and perforators controlled by said pistons.

5. In a perforating apparatus, pneumatically controlled perforators, manually operable valves, a source of air under pressure, and means for selectively directing the air under pressure through said valves or through apertures in a record sheet to control the operation of said perforators.

6. In an apparatus for duplicating a perforated record sheet, pneumatically controlled means for determining the location of perforations in the perforated record sheets, means controlled thereby for registering the location of the perforations in the perforated record sheet, a plurality of perforating members, means for actuating the perforating members to cause the registering means to selectively control the efiect of the perforating members on a second record member, and a plurality of manually actuatable valves for 5 nullifying the operation of selected ones of the pneumatically controlled means and controlling the registering means.

7. In an apparatus for duplicating a perforated record sheet, pneumatically controlled means for 10 determining the location of perforations in the perforated record sheets, means controlled thereby for registering the location of the perforations in the perforated record sheet, a plurality of perforating members, means for actuating the per- 15 forating members to cause the registering means to selectively control the effect of the perforating memberson a second record member, means for rendering said pneumatically controlled means ineffective for determining the location of per- 20 forations in certain areas of the perforated record sheets, and a plurality of manually actuatable valves for controlling the registering means associated with those areas of the record sheet in which the determination of the location of per- 25 forations by the pneumatically controlled means is rendered ineffective.

8. In a record marking apparatus, pneumatically controlled marking members, manually operable keys, and means for effecting the control 0 of the 'marking members either in response to apertures in a record sheet or by said keys in-. cluding means for rendering the sheet ineffective to control the marking members responsive to the keys.

9. In a perforating apparatus, means for directing air under pressure through apertures representing information in a record member, means for marking'information on a second record member, means controlled by air under pres- 40 sure passing through the first mentioned record member for controlling some of the marking means, manually controlled means for controlling others of the marking means, and means for selectively rendering either the manually controlled means or the air passing, through the record member effective to control predetermined marking means.

10. In a perforating apparatus, means for marking a card, a source of air under pressure, means controlled by said air under pressure for controlling said marking means, means for mounting a perforated card in a position for controlling the passage of air to said pressure controlled means, and manually controlled means for controlling the passage of air to said pressure controlled means.

11. In a perforating apparatus, a source of air under pressure, pistons actuatable by said air under pressure, and means for selectively directing the air under pressure through apertures in a record or through manually operated means to said pistons.

JOHN C. GATES.