US2536926A - Dual strip feeding and braking device - Google Patents

Description

Jan. 2, 1951 F. J? FURMAN 2,536,926

DUAL STRIP FEEDING AND BRAKING DEVICE Fild May 27, 1948 4 -SheetS-Sheet 1 RE DST INVENTOR FRANK J. FURMAN ATTORNEY Jan. 2, 1951 F. J. FURMAN 2,536,926

DUAL STRIP FEEDING AND BRAKING DEVICE Filed May 27, 1948 4 Sheets-Sheet 2 BRAKE OFF CONTROL ON BRAKE OFF 114 CONTROL OFFO\12Z BRAKE ON I CONTROL BRAKE OFF U CONTROL ON Q BRAKE OFF @NTROL OFF :BRAKE OFF CONTROL 0 (Q 4 125 L BRAKE OFF- CONTROL 0 2 I m INVDEIRVITOR FRAN K J. FURMAN ATTORNEY Jan. 2, 1951 J, FURMAN 2,536,926

DUAL STRIP FEEDING AND BRAKING DEVICE Filed May 27, 1948 4 Sheets-Sheet 5 INVENTOR FRANK J. FURMAN ATTORNEY F. J. FURMAN DUAL STRIP FEEDING AND BRAKING DEVICE Jan. 2, 1951 4 Sheets-Sheet 4 Filed May 27, 1948 INVENTOR N A M R U. F K N A R F ATTORNEY Patented Jan. 2, 1951 STATES PATENT DUAL STRIP FEEDING AND. BRAKING DEVICE Frank .3. Fireman, Endicott, N. Y; assign: to. International- Business Machines, Corporation; New: York, N. Y., a corporation of Application May 27, 1948, Serial N0. 293534 e chime. (01. 1 91-133);

{controiied' drivers, and the remainder of the cara ge.

Enother object of" the invention is. the prof yisien ef separate paperfeed brakes or adjust- ;Lable drags which cooperate withthe two webs paper, or two sets ofstrips, as they come from t e sourceof supply: and before they pass around he platen. After the paperpasses around the .platen. it is engagedaby the pin wheels which ad- Qtfiilce it after-each printing impression. ;.other; words, the brake or drag cooperates with -'the paper before it teaches theplaten and the pinwheel pulls, the. paper beyond the platen. "iheref-ore. thedrag serves to. keep the paper taut on the pinwhee-i andaround the platen, and

also servesto. prevent buckling. looseness, or

piling of the webs at either the platen or the wheel.

Another object. of: the invention is to make the make or drag adjustable so that the pressure on the web and the retarding influence thereof may be varied according to the extent and speed of the feed or according to the thickness of the pack oisheets. Netv onty is the brake adjustable. it is also settabl'e to anoff position to free the paper from restraint.

Another object-ct the invention is: the coordination: at an "end of sheet?" control with the. brakedevice so that card feeding is stopped when the ends of a record strip: passes the braking position and before itreaches. the printing position at: the platen. Inv one of: two "brake ofi'positions, the brake. devicesserveto disable: the. end of sheet. controls sothat then. the controls do not serveto detects misshig sheet. There are three contrei' positions of a; brake lever wherein jointcontool. is exercised. over the brake and the end of controls. There is the first position designatedasbra ke1onand end of sheet control This iSfihflhOlIhS- l' running condition whereinlong feeding requires the brake and the operatorwishes to be relieved of watching for the end of the paper web; The second position of the brake lever is designated "hr-aheoff and end 2*- for a condition of sheet-feeding. or exclusive line spacing feed, 0rsheet. extents of feed which are: knownto invohze no tendency for the paper webs to overdraw' the webfrom thesupply source and no condition ot' buckling' jutting off the pins. However, the end ofisheetcontrol is then retained to detect depletion of the paper and stop cams feeding. The third position otithe brake lever. is designated, brake oft and controL off." control is provided for starting conditions when it is desired to thread webs as paper through the braking and detection control positions interference. It is also. useiihiiter printing short forms. when it is that the few item iliustnatedthe. accempanyinginnawings disclose, by way of example, theprinciple of inventim. thea'hesfl. mode; which has been contemplated. of applying thatprincipie.

Inv the drawings;

Fig. 1 is; a plain; view: showingthe dual: feed; carriagewith: the pin. feed wheels: and the. brain-- ing devices. The-two'tape controlled difienential. drive. units are also; shown. thei'oneon the being connected byr'gearingto the platen. and the lower pair of pin feed wheels for the" inner strip, and the =unit onthe Iefiz being connected by gearing to the upper Set. Of Pitt wheels to: the outer strip.

Fig. 2 is a side. elevation taken alongline 2- 12 in Fig; 1= and-showing the pairs of brakes and end of sheet detector levers and the pain of brake setting'levzersi 2a is ardetazili viewat the-bwkesettingJe-sen in the second; position wherehi the: brake is oil.

Fig. 2b isa detail or the brakesettinglever in the third position wherein the brakeand the. end of sheet control are Fig. 3: is an perspective view or the brake setting lever connections there fromv to the brake the end detectoe lever.

Fig; 4 is a sectional phm views of the brake setting 1ever: a:s seen= along line-- H 1132:1 15; 2b.

of sheet. on? control is. provided 56.- Fig. Sisa 'cgiaonutelmaflon view Mien-atone line 5-5 in Fig. 1 and showing the paths of both webs of paper as they pass around the platen and separate pin feed wheels. The contacts operated by the two end of sheet levers are also shown in this View.

Fig. 6 is a wiring diagram showing the "end of sheet controls withthe relays for governing the card feed clutch magnet.

Referring to the plan view, Fig. 1, it is seen that the platen P is supported between two main carriage frames and 2|. Above the platen P are two pairs of pin wheel feed units for advancing the two record strips. The lower pair of pin wheels LPL and LPR, Fig. 5,,engage the marginal perforations of an inner, secondary or register strip R, the path of which is shown by R-R. in 1 2,315,731 which can bereferred to for details of construction.

..Turning back to rate motor ;driven'feed controlunits UTC and LTC are provided for the upper-and lower pin feed units, respectively.. These feed controls are ofithe perforated tape controlled type such as.- illustrated in detail in the patent application of Mills etaL; Serial No...609,8,54 filed on August 9, 19:15, how Patent No. 2,531,885, November 28, 1950.- Itissufficient to note-here thatthe right tape controlled unit LTG contains a motor M the. worm shaft W of which, engages a gear train G- connected to high and low speed clutch devices CD ;which operateasecond gear train G with drive connections to the platen P. On the platen shaft; isya gear l6 in,.mesh with an idler gear I! which meshes in turnwith agear' -|'8 fastened to a shaft .IS-nf' -the lower pin wheel. units LPL and ';The other tape co'ntrolled feed unit UTC contains the sainef sort of motor, gears and clutch parts as noted in describing unit LTC, the only difference being that they. ar reversed in position-and include an extra idler gear 22 which provides an elevated driving source in mesh with a pinion 23 fastened to the left end .of a shaft 24 passing. through the ;upper pin feed units UPL Fig. 1, it is observed that sepa Therefore it is clear that the right hand driveunit LTC rotates the platen P and the lower pin feed wheels, while the left hand drive unit UTC rotates the upper pin feed wheels.

:Attached to the-inside of the main side frames Zll-and 2| are the" side plates 29 and 30 of a re-. movable fram which carries. both sets of pin.

wheels. I The 'lowerpin wheels are on shafts fixed in position between plates 29 and 30, but the tion to the lower frame which is about to be described.

In Fig. 5 it is seen that side plate 29 supports shafts 33 and 34 in addition to shaft IQ of the lower pin wheel units. A key 35 is in shaft [9 and serves to connect the wheel portion of the pin feed unit to shaft [9 regardless of thelateral position in which it is placed. A U-shaped frame 36 embraces the pin feed unit and has slotted tails 31 engaging shaft 33', thereby providing a relatively stationary part of the unit to which is attached the firi'ed pinion holderfor twisting the pins.

Confined "between the tails 31 is an adjustment block 38 slidably mounted on shaft 33. Into the block there projects a thumb screw 39 which may be loosened to release th pin feed unit for lateral adjustment according to width of record strip, and then tightened to hold the unit in place.

On a screw 40 in frame 36 thereis pivoted a curved strip guide 4| for holding-therecordmaterial down on the pins. An over-center spring 42 serves to hold the guide Akingeithera lowered operating position, or a ran-euros" position which is occupied while forms ere being assembled in the carriage.- s;

Between each pair of pin wheelsuni'ts' is. a pair of paper supports 44. =They- -arecurved -at a tangent to the periphery of the pin; wheels and bent down with side walls loosely encircling' the feed unit shafts, so that they are'slidable into.

positions to support the record,ma teria l intermediate the pin wheels attheiunar'ginsi .The lower supports 44 are held on,'and slidable'talong, shafts 33 and 34; whileathej upper 'supports are similarly held on corresponding shafts-4,5'and 46 of theupper feed-unit.j

The parts of the upper pinI whel; assembly involving shafts 24, and'ABare" similar to those described in connection' with theJa'SSembIy; of the lower pin wheels on. shafts ,'l9,' 3'3. andlv 3.4. Before going into detail .regardingfthe-"nianner of mounting the upper. unit on tl' efmair'i feed frames 29 and 30 and themannerlbffastening. the feed frames to the carriageIf-ramesfit is be}- lieved well to point out the parts and appendages of the carriage frames. .1.

In Fig. 5 it is seen that a heavy bar '48 ties" together the main carriagegfra'mes, '20 and 2! and is secured to 'a cross bar .49 'of the 'tabulaton'.

Extending between the main framesf'is a slanted paper table 50 to the lower end of which is ate-Q tached a thin continuation piece 5 which ex-{. tends down to the lower part of. the platen P. andis curved part way around to the. front. Resting on vtables 50 and 5113.13 Dair-of-..-side guides 52 the upper ends of which are slidably mounted on a cross shaft '53.

At the front of the mainframes are bearings; for carrying the ends of the-platen'shaft l4. Cooperating with the platen *P-"gare sets of uppe'rf' and lower pressure rollers;55'and;5.6. '1 he-upper rollers 56 are on a rod. whichis;=part of a bail comprising side arms 51 and a fulcrum shaft 58.

- Attached to the ends'of shaft 58 are. latch arms I 59 which catch in grooved ends of shaft 33 to. hold the entire pin feed frame assembled on the".-

main frames. For the purposeof holding the pin.

feed devices, each main frame 23 and 2| is formed} with a vertically slotted fork. BI and a hool;

shaped extension 62. Inthe. assembled-position of the pin feed devices, extendingends .lOf shaft 34 are caught under hooks 62 and, at the same time. a t 33 is pped in theslot of fork eland under the retaining ends of arms '9.- spring (not' showno urges thetail 51 and arms 59 in a counterclockwise direction to hold down the endsof 'shaft 3'3 and retain the pin feed devices with the frames 29 and 3slocked down.

In ordertoremove the'pin-feed devices as a unit, all that is necessaryis" to lift the front: end of bail 5lto-rock' arms as backward, then raise the front end of thepin feed devices to: lift shaft 33 out of'fork 61 and" then slidethe whole unit backward to shove shaft 34 out from under hooks 82 There are times when it is desired to either raise the upper pin iced devices for paper threading purposes, or to remove the upper devices" entirely when only'on'e pin feed" shaft is tobe used. For these purposes the upper unit is made as: aseparable assembly within sideplates 31 and 325 The upper edges of" side frames 29' and 3c are shaped to receive' and retain shaftand studs 5t extending inwardlyfrom sidep1'ates3l and 32 A hook shaped extension engages stud Ell and -a depression is's-haped to receive shaft $5. In order to holdthe upper frame in' position orr the mainfeed un-itf'rarnes; a pair of detent' levers 6-1 are pivoted" at 68 on the frames wand 30. These levers Stare-formed with notches Mand" ll which engage extending ends of'shaft 46. A. spring"l l'- tends to rock' lever 6! counterclockwise and clamp the lever against the shaft 45:

If it is desired merely to raise the upper pin wheels; then the upper unitis rocked clockwise, Fig; 5; with studs 64 as centers of rotation; and" the shaft it is snapped" into" notches It of lovers 61. With the upper unit so held, the upper pin wheels are high above the lower pin wheels with room enough between them to adjust the paper on the lower wheels: By'merelypressing down; on the front of the upper'unit it is possible to" rock the unit backto' the normal position wherein shaft 46* snapsinto notches 6t asshowrr.

Whenthe upper'unit istobere'rnoved entirely, it" is' pushed rearwardly to" shove" studs as out from under hooks 65: Then; byraising the fron end of" the unit and drawing it forwardly; shaft E6 is disengagedfrom detent' levers 61-1 Levers 6"! are held in position by stop pins 1 2" on side frames 29 and 39, and thus are"- held in position to receive the rear of the-unit when it is reinserted.

untilstuds 54 snap under books 65;

The foregoing section of this description dealsmainlywith the means for engaging the-marginal perforations of the tworecord strips and M in order to advance them difierential distances according to the settings: of the two tape controlled devices UTC and LTC and according to" the control cards of the; printing tabulator; Other de-- vices are provided'in the-form otadjustabl'e drags on brakes for both strips-and end of sheet detector leversfor both sheets; The brakes-act to keep the. record material taut around I the' platen and the detector levers sense the-endof-Ieither strip and stop: card feeding to prevent printing:

when-the record material-isabout to'be exhausted" from: either supply sourcet In Figs. 1 and E thereisa general showingof the; brake devices: mounted its the rear' of the carriage. on a; separate removable frame: Ex

tending: from the rear or the: two main carriage frames ZO andI Zl are projectibnsll and-" 15 with To replace the top unit, the shaft 4 thereof is placed in the notches 69- of levers El, andthen the unit ispus-hed rearwardl'vand at the same time swung counterclockwise 6.. pairs of bolts 1-66 for receiving the slotted forward: portionsof side frames and 18- of the braking unit; I

Frames 1 1 and 18: are: formed. with vertical r notches l9 and horizontal slots BG Wherebythe: entire" brake unit; may be easilyremoved by" merely loosening the boltsl6=- and. sliding the: framesup and back; To reassemble the-unit, theproeed'ure' ismerely reversed by Sliding the-unit. forward and dropping the notched v portions around bolts 16- before tightening" them.

The brake unit side frames TI and 1 8 are joined by two cross members or paper tables 8t Fig. 2, and are thereby fastenedat their ends to the framesto hold them in spaced relation.

The upper table 81 acts as av support for the: inner webof record materlal designated as reg ister s-trip-Ri-which slidesoverth'e top -of thefta'bleifrom right to left, Fig; 5; in going fronrthe-source? of supply to the platen. Resting on the'strip-"R is'on'eormore of a series of threeend ofsheet" detector" levers 81 which" are fastened to a com- V mon'shaft 88 that is loosely pivoted inthe side'- frames. Outside the right frame 18, Fig. 5, shaft '88" carries a lever 89, to one endof which is attached' a spring 90 drawingit ina countercl'ocl'rwi'sedirection, and theotherendof lever 89 cooperates with the underside of an insulation frame 91" pivoted at 92' and" carrying a" contact point in normal contact with a. central spring-1 blade comprising closed contacts, 93.

Under the lower curveded'ge of each lever Bl, Fig: 3;, there is a slot 94 cut into the tables I, and, in the absence offstrip. R", spring 90; Fig. 5, is effective' to rock levers. 81 in a counterclockwise direction, also rocking lever 89 and frame 9| simi'flarly to raise the upper. contact point and break:v contacts 93, thus stopping the card feed as explained hereinafter. However, as long as record.

material R is present under any one Of the three levers. 8'1, the. slot' opening 94', Fig. 3, is bridged; and the lever held. up in the position shown in Fig. 5 to maintain contacts. 93 in the normal closed running condition.

In the plan.view,.Fig. 1,.it. is seenthat two end. ofisheet levers 87: are. spaced in.from the two sidesof thelbrakeunit. There is athird centralized: lever 81 (not shown) which completes the coverage of detection-to the whole width, so that. regardless of the-Width. oftheform, or of its disposition at aright, left or central location, the:- passage of the end of it will be: detected by: one

. oithe three levers.

The lower table 82 acts as a support fonthe outer web of record. material. identified as the mainorcheck: strip M.which" slides overv the top of the table from rightto' left, Fig; 5, in' going. from the supply source-to=theiplaten; Resting onthe: strip M.is one or: more of aseries of three; end of shee detector levers 81' which are tas tened' to a common shaft 88 which is looselypiv otediin the side frames.. Levers 81! actto detect the presence or absenceof strip Mjust aslevers: Bl do in' cooperation: with strip R, and the description already: given of the construction and: operation of theaupper. detector parts. appliesas well. to the lower detector. It is believed sufficient to-note thatin the absence of strip- M. a lever 8'9"'1ifts a frame 9|" to break contacts 93 A boxllt is fastenedto the outside of the right frame to enclose the-contacts-93and 93'.

In cooperation with both webs of're'cord materials R and are separate brakes or drags to keep the paper taut around the platen and prevent any tendency to pile up, buckle or jut out at the pin wheels, such a tendency being exhibited mainly on long feeding or eject operations when the web is accelerated out Of the supply source and gathers momentum in going towards the platen. By placing brake shoes 98 and 99, Fig. 5, on the strips R and M, respectively, and pressing them down against tables 8| and 82, it is possible toput-a drag on the record material to keep it taut at the printing and pin feeding p sitions.

Throughout this specification, when reference is made to a strip or web R or M, it is understood that either piece of record material may be of a single or mu tiple pry, and duplicated impressions thereon are made by carbon backings of outer sheets or separate carbon sheets interspersed between the record sheets. A customary form of inked ribbon is provided to place original impressions on the outer sheet.

' T rrnng back to consideration of the brakes, it is noted in the en.arged iew, Fig. 3, that shoe 98 is formed with upstanding front and rear walls, I and IOI which strengthen the shoe which is quite long, Fig. l, in extending across the entire inside of the carriage. The rear wall IOI serves another purpose in that it is cut out at I02, Fig. 3, to act as a side guide for a thin flexible pressure blade I03, riveted at I04 to the top of the brake shoe 98. There are four such pressure blades I03, Fig. l, evenly spaced across the shoe to distribute the applied pressure evenly. A slanted portion I05, Fig. 3, of the rear wall of the shoe, acts as a normal resting place for the similarly slanted section of b.ade I03.

The upper ends of blades Iu3 are riveted to the underside of shaft I06 and it is by the twisting of this shaft one way or the other that the pressure of the brake is increased or decreased.

I $haft I00, Fig. l, is loosely pivoted in the side plates TI and I8, and outside the left frame TI there is assembled on the shaft, aloosely pivoted control lever I08. This lever I08 has an indirect connection to shaft I08 through a pressure adjustment lever I09, Fig. 3, which is pivoted thereon at I I0 and has a pin and slot connection III with an arm II2 fastened to shaft I06. Adjustment lever I09 is loosely pivoted at IIO on control lever I08, but it is adapted to be clamped thereon in a selected pressure regulating position. In the pointed end II3 of lever I08 there is cut an arcuate slot H4 through which passes the shank of a clamp screw H5, Fig. 4,

which also passes through the end of adjustment lever I09 and carries a clamping nut IIS on the outside.

A pointer on the tipof adjustment lever I09 cooperates with an arouately arranged set of adjustment marks H0 which act as indicators for the degree of brake pressure applied. For example, as shown, the lever I09 is centralized with respect to lever I08 to so position shaft I08 and the flexible blades I03 thereon, to apply a brake pressure found to suit the normal need. If it is desired to increase the brake pressure, then the nut H8 is loosened, lever I09 is rocked downward counterclockwise the desired degree, and nut H6 again tightened. In so moving lever I09 downward, the pin and slot connection III is raised, and arm II2 is rocked clockwise along with shaft I09 inned thereto. Thus, the four flexible blades I03 are also rocked clockwise. Since the lower ends of the blades are secured at I04 to the brake shoe 98, they cannot move much, but the mid section is flexed to bear down on the shoe and increase the drag on the record strip R which is pinched between the shoe and the top of table 8|.

If it is desired to decrease the brake pressure, then nut H8 is loosened, lever I09 is rocked upward clockwise the desired amount, and nut IIB again tightened. When lever I09 is moved upward, the pin and slot connection III is depressed, and arm H2 is rocked counterclockwise along with shaft I06. This movement of the shaft serves to relieve some of the downward pressure of the blades I03 and as the shaft twists counterclockwise, pressure is taken off the brake shoe 08 and record strip R is relieved from some of the drag.

All the foregoing reference to the application and adjustment of braking pressure applies only while control lever I08, Fig. 2, is in the uppermost of three control positions. In such a position, a stop pin I I9 on frame 'I'I limits the upward sweep of the point I I3 to where it marks the control Brake oncontrol on which is an indication of normal running conditions with brake pressure applied and the end of sheet detection in operation. Lever I08 is maintained in the top position by a sliding plunger I25 which drops into a hole I20 in the side frame H. In the large section, Fig. 4, it is seen that plunger I25 is formedwitn a knurled grasping head and is fitted in av hub I28 near the end of lever I08. A spring I2'I in the hub, tends to keep the plunger point I26 extended, but it can be withdrawn from the side plate when the control lever I08 is to be swung down, Fig. 2, to either of the other two positions marked by the two arcuately arranged holes I and I22 also engageabie by the plunger.

In the second osition, Fig. 2a, it is seen that with lever I08 depressed slightly and located with plunger I25 1n the locating hole I2I, the entire brake assembly is rocked counterclockwise about shaft I06, and brake shoe 98 is lifted above table 8| and out of contact with the register, strip R. The control lever points to the legend Brake ofi--control on to indicate that although the strip is free from pressure of the brake it is still contacted by the end of sheet detector.

lever 81 and that such control remains effective to stop card feeding when the end of strip R passes.

The control of the brake over the end of sheet detection lever 81, Fig. 3, is exercised through the contact of an overturned lug I29 on lever 81 with the top of the brake shoe 98. A

slot I30 is cut into the wall IOI of shoe 98 and;

positions of lever I08 have no effect on detectionlever 81; i. e. the lugs I29 remain poised above shoe 98 when it is raised slightly as well as when it is down on the strip R. However, when lever I08 is rocked still further into the third position...

Fig. 2b, then the top of brake shoe 98 engages under lugs I29 and lifts the detection levers 81- slightly so that they no longer rest on the paper above slot 94, Fig. 3, and therefore cannot detect the passage of the end of the strip.

In the thirdposition, Fig. 20, it is noted that when lever I08 is depressed with a second degree of control movement, and located with plunger I25 in the locating hole I22, the entirebrake 9 assembly and levers 81 are. lifted above table '81 and" out of contact withstrip R. The control lever points to the-indication "Brak'e; offcontrol off? to show" that the strip is free. of both the drag and the "end of shoe control and that the machine may-be operated without the two restraints. Then the ordinary platen feed may be used or paper threaded around the lower pin wheels without-any drag or control thereover.

Although the braking and controlling devices are describedhereinbefore with reference to the upper control'lever I08, shaft I06 and brake shoe 98, it is'noted in Figs. 2 and 5' that a similar set of parts is'associated with the lower brake shoe 9!! in cooperation with the main strip M. These parts comprise detection levers 81", flexible blades lily-"and control lever I 08" with the pressure regulating parts I09 and H2. Lever I08, Fig. 2, is also settable in. three positions marked by holes I20, I2I' and I22, for selection of braking and end of sheet control as already described. Therefore, although the two strips or sets of strips have a common platen and recording point, they have individual regulators for governing the extent of braking if any, and the control over strip detection.

It was pointed out hereinbefore with reference to Fig. 5 that contacts 93 and 93' are normally closed while strips R and M are feeding, one or the other of said contacts opening when the end of a related strip passes in front of detector lever 81. or 81. The control exercised by these contacts 93 and 93' over the card feeding means of the tabulator is shown in Fig. 6. There it is seen that the two contacts are arranged in series with each other and in shunt around the start key contacts KI. When the startkey is depressed, relay RIZ is energized and closes contacts Rl2a to set up a holding circuit including line 320, stop key contacts K2, contacts 93' and 93, wire 325, relay contacts RIZa, relay BIZ and line 32L Therefore, as long as the stop key is not depressed, and as long as presence of record materials R and M keeps contacts 93 and 93 closed, relay RIZ will remain energized. There are other controls in the circuit as shown in the application Serial No. 609,854, mentioned hereinbefore, but they are of little consequence in connection with the present controls. It is sufficient to note that relay RIZ maintains energization of the card feeding clutch magnet CFCM as follows.

As long as relay RI2 remains energized, it serves to close contacts RIZb in series with cam contacts CB3! and relay RII which when energized establishes a holding circuit through contacts RI Ia and cam contacts C332. Relay RII also closes contacts RI lb which are in series with the card feed clutch magnet CFCM which maintains the driving connection between the constantly running parts of the tabulator and the card picker mechanism.

Whenever either or both of. the contacts 93 and 93' open due to the passage of the end of a strip or strips, relay RI2 is deenergized, causing the deenergiaation of relay RII when contacts C332 open. This causes the opening of contacts RI Ib and deenergization of clutch magnet CFCM which breaks the drive to the picker and stops the card feeding means.

, While there have been shown and described and pointed out the fundanmental novel features of the invention as applied to a preferred embodiment, it will be understood that various omissions: and substitutions and changes in the form and details of the device illustrated and in almanac its operation maybemade by those skilled in the art without departing fromv the spirit of the invention. It is the intention therefore to be limited only as. indicated by the scope of the following claims.

What is claimed is:

1. In a card controlled printing device for printing on a plurality of strips of record material, a common platen around which said strips are drawn, a plurality of pin feeding devices for feeding said strips, means for operating said pin feeding devices, separate paper tables over which said strips pass in going from sources of strip supply to said platen, a brake shoe on each of 's ai d tables to press on the strip and provide a drag thereon, a control lever for raising said shoe to primary and seccnd'ary off positions, means cooperating with said control lever to adjust the pressure of said shoe, strip detector levers one of which is poised over a slot in each of said tables and passes through a notch in said shoe to rest on a record strip, normally closed contacts and control means therefor connected to each of said detector levers so that when the end of the strip passes beyond said slot, the detector lever drops in said slot and opens said contacts, a lug on said detector lever cooperating with said shoe on the side of said notch to lift said detector lever above said strip out of control position when the control lever is put in the secondary off position, a card feed control means, andmeans controlled by said contacts to disable said card feed control means to stop card feeding when the end of a strip passes the braking position.

2. In a record feeding device, a paper table over which said record passes, a brake shoe for pressing on the record on the table, a brake shaft, a series of flexible blades connecting said shoe to said shaft, a control lever loosely mounted on said shaft, an arm fastened to said shaft, a pressure adjustment lever pivoted on said control lever and having a pin and slot connection with said arm, means for fastening said adjustment lever to said control lever in any of a plurality of adjusted positions, and means for holding said control lever in positions wherein said brake shoe is effective or raised to an ineffective off position.

3. In a record feeding device, a paper table over which said record passes, a detector lever a portion of which rests on said record over a slot in said table which allows the lever to move when the end of said record passes, stopping controls under control of said lever and efiected when the end of said record passes, a brake shoe for pressing on the record on the table, a control lever with connections to said shoe to lift it to an off position, and connections between said detector lever and said shoe whereby the detector lever is lifted away from the record to an ineffective position when the shoe is lifted to an off position. 4. In a record feeding device, a platen, main side frames in which said platen is supported, upper and lower pin feed devices supported above said platen, a removable frame for said lower pin feed device comprising a pair of cross shafts, slot and hook formations on the top of said main side frames for engaging the ends of said cross shaftsmanipulative detents pivoted on said main I frames" and cooperating with one of said shafts to hold said pin frame downon said main frames;

an au liary removable frame for said upper notches and hook formations'onthe top of the lower removable frame for receiving a cross shaft and the. ,pivot studs of the upper removable frame, and a pair of positioningrlatches pivoted on the lower frame and cooperating with a cross shaft of the upper frame toihold the upper pin feed device in a lowered or a raised position.

5. The combination set forth in claim 4 wherein said latches are spring urged and have notches facing the/hook formations on the lower frame, whereby pressure of the latches on the cross shaft of the auxiliary frame tends to hold the pivot studs in said hook formations.

6. The combination set forth in claim 1 with means for holding said control lever in one of three control positions; in the first of which positions both the brake and the detector lever REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 2,077,428 Mabon Apr. 20, 1937 2,136,820 Mabon Nov. 15, 1938 2,313,888 Otis Mar. 16, 1943 2,348,059

Daly May 2, 1944

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