IBM C-1, Customer Engineering Reference Manual

Page 1: ...______________________________ 15 4argbl Release ________________________________ 16 Line Lock _____________________________________ 17 Carriage and Rails _____________________________ 18 Paper Feed _...

Page 2: ...1958 INTERNATIONAL BUSu ESS MACHINES CORP 590 MADISON AVENUE NEW YORK 22 NEW YOBK Printed In U S A 1958 Form 241 5002 0 I...

Page 3: ...ratchet has been enclosed within the left hand carriage end cover RIBBON MECHANISM FABRIC 7he fabric ribbon feed mechanism has been completely redesigned to provide cleaner faster ribbon changing and...

Page 4: ...laterally the machine may be quickly and easily attached to or removed from the desk A removable bottom panel slides into the bottom case section and serves to protect the typewriter This panel can be...

Page 5: ...ease lever and loosen the two end cover mounting screws TOP PAPER TABLE Pull the rear edie up and for ward Adjustments CASE and COVERS 1 KEYPLATE Adjust by forming the keyplate mounting brackets so th...

Page 6: ...tially the same in operation as the Model B machine Changes have been made in design to simplify removal and adjustment procedures and to conform to the new case design The motor is a new 3 design use...

Page 7: ...mplete case and cover sections 2 Refer to Model BI Power Roll Removal Note The lower power roll bearing retainer screw is longer and serves also as a spring anchor for the ribbon mechanism Adjustments...

Page 8: ...adjustable in order to obtain proper keylever to trip lever clearance Figure 4 ij CIiP PiK e 4 Keylefler Bearing SII Jpo t Each row of keylevers has a different restoring spring color coded for easy i...

Page 9: ...any keylever position The letter cam has been reshaped for smoother operation and is not interchan eable with previous models Removal KEYLEVEBS 1 Remove the typewriter from the base section 2 Remove...

Page 10: ...with pliers NOTE Do not form keylevers with T bender or hammer as damage to the keylever bearing support will result RESILIENT KEYBOARD CONTROL The resilient keyboard control located to the left of th...

Page 11: ...el B The pawl is the 058 motion pawl for 8 9 10 and 12 pitch ma chines and the 038 motion pawl for the 6 and 14 pitch decimal tab and lift platen typewriters The pawl and trip lever are no longer moun...

Page 12: ...p of the car riage tension tape on various lugs of the mainspring drum This adjustment may be checked through the follQwing steps A Position the carriage so that the tip of the tab check lever is dire...

Page 13: ...20H Carriage 2 lbs Jf 0 lhs at start to 3 lbs maximum J4 Carriage 23 4 Ibs 0 Ibs at start to a Ibs maximum 80 Carriage 3 Ibs 0 lbs at start to Ibs maximum 2 UNIVERSAL BAR Refer to Model Bl lI seape m...

Page 14: ...slide and front frame and screw into the repeat stop Figure 10 The re peat slide is spring loaded against the upper arm of the repeat stop During repeat operation the space bar stem moves the repeat s...

Page 15: ...ravel of the space bar between the non repeat tripping point and the contact of the repeat slide is 015 to 025 Figure 10 s OPERATING LINK Adjust to trip the escape ment pawl just before the high point...

Page 16: ...t on the rear rail so that the margin reset lever pin will center in the V groove of the margin stoP a MARGIN STOPS The margin stops shall operate freely without excessive play and without binding MAR...

Page 17: ...ELEASE ECCENTRIC Adjust so that the margin control lever clears the underside of the margin rack by 010 to 015 Figure 12 LINE LOCK The line lock is essentially the same as on the previous model Figure...

Page 18: ...the new case and cover section design and to increase machine flexibility Model C carriages are available in the following lengths 13 17 20 24 and 30 The margin and tab rack center support on carriage...

Page 19: ...ing on eccentrics connected by a fiat platen latch link Pulling the latch toward the front pivots the latch lever over the platen shaft The latch engages a notch in the latch lever locking the two tog...

Page 20: ...the same as on the Model B The carriage final stop has been eliminated Due to the new carriage lengths a new truck insertion method is used Figure 16 THIRTEEN INCH CARRIAGE Position No I SEVENTEEN INC...

Page 21: ...e by moving it to the left INNER CARRIAGE The inner carriage may be re moved without disturbing the rails or carriage ad justments by following the procedure outlined in the Model BI section of the Re...

Page 22: ...eliminates the tab rebound check lever the air cylinder and the horseshoe shaped tab lever mounting bracket The centrifugal governor operates as the carriage moves to the left during tabulation As th...

Page 23: ...rotate tightening its spring clutch and rotating the gear and hub assembly The gear and hub assembly drives the pinion gear of the centrifugal governor which de creases carriage speed during the last...

Page 24: ...the last portion of a tabulation and absorbs the shock o Carriage Motion Tob Decelerator Link Tob Check Lever Tob Decelerator Bellerank Figure 19 Tabulation Deceleration Removal The decelerator gear...

Page 25: ...CH COLLARS The tabulation and carriage return spring clutch collars should be positioned on the shaft so as to allow their decelera tor arms to rotate freely without exceeding 003 end play of the arms...

Page 26: ...r bellcrank link 5 Remove the tab lever pivot stud 6 Remove the tab lever by lifting it up and toward the rear Reassembly may be accomplished by reversing the above procedure Avoid over tightening the...

Page 27: ...ween the working surfaces of the escapement pawl and an escapement rack tooth when the tab check lever is in its extreme left position Figure 21 1 Depress the tab cam with the power OFF and ro tate th...

Page 28: ...unting nuts so as not to spring the carriage end plates 5 TAB LATCH Adjust by positioning the eccentric mounting stud so that the tab check lever engages h to of the exposed surface of a set tab stop...

Page 29: ...5 between the working surfaces of the tab check lever and a tab stop when the parts are at rest Figure 25 Position the keeper front to rear so that there is a clearance of 003 to 010 between the tab c...

Page 30: ...ever extension Obtain this clearance by forming the tab lever extension 10 PAWL RELEASE LEVER Form the rear up right lug so the escapement pawl clears the escape ment rack by 010 to 020 11 DECELERATOR...

Page 31: ...nd unlatching action Figure 28 Release of the carriage return cam pulls the clutch lever forward causing the clutch to engage and de velop a pull on the carriage return tape The line space and pawl re...

Page 32: ...r through the carriage return decelerator bellcrank Refer to Decelerator section of this manual Removal Refer to Model Bl section Adjustments 1 CAM CLEARANCE Refer to Model Cl Space bar Adjustment 1 2...

Page 33: ...of the bellcrank and adjust so the slot in the clutch latch bellcrank is in line with the hole in the car riage return tab interlock when the clutch is latched 6 CLUTCH UNLATCHING LINK Adjust the link...

Page 34: ...e Return Adjustment 18 12 COMPRESSION SPRING Adjust so the carriage will return to the left margin from any position along the writing line with the variable linespace lever to th rear 13 MARGIN CONTR...

Page 35: ...ct the shift pusher Iever spring 6 Remove the shoulder screw and the pusher and levers assembly through the right side frame Adjustments Rin and cylinder must be properly adjusted be fore making any a...

Page 36: ...odel C carbon ribbon mechanism is com pletely contained within the case of the typewriter and has been redesigned to provide easier threading and more accurate feeding It is not possible to accommodat...

Page 37: ...racket is inclined for easier re moval of the used ribbon Take up action is accom plished through a friction drive gear attached to the power roll pulley and engaging gear teeth on the in side flange...

Page 38: ...ng bracket 3 Separate the two halves of the ribbon spool and discard the used ribbon 4 Replace the re assembled ribbon take up spool and latch the mounting bracket 5 Place a full spool of ribbon on th...

Page 39: ...ibbon spool is empty 6 REWIND MOUNTING PLATE Position the plate to insure positive engagement of the take up spool gear teeth with the friction drive gear on the power roll pulley RIBBON MECHANISM FAB...

Page 40: ...l ro tating the wheel and the drive shaft to which it is connected Gears connected to the drive shaft trans fer this rotation to the ribbon spools The lateral position of the shaft controls which gear...

Page 41: ...eeth of the drive shaft primary cam Figure 38 As the drive shaft rotates the secondary cam pinned to the drive shaft climbs the high points of the now stationary primary cam This pulls the drive shaft...

Page 42: ...on Rewind Adjustments The ribbon mechanism will when properly ad justed provide positive ribbon feed in either direc tion and reverse dependably at either end 1 LEFT HAND AND RIGHT HAND DRIVE SHAFT M...

Page 43: ...its the sensing finger to clear the left hand ribbon spool when the front cover is open Adjust the link to per mit the sensing finger to clear the spool with the front cover open The link must not pre...

Page 44: ...n the drive shaft to the left so there is a clearance of h between the C clip on the shaft and the left hand bushing in the keylever bearing sup port Figure 41 Set the nylon primary cam against the ke...

Page 45: ...igure 42 Drive Shalt Collar Adjus menl 13 REVERSE LEVER ECCENTRIC STOP With the reverse lever unlatched adjust the eccentric stop until the primary cam clears the keylever bearing support by 006 002 F...

Page 46: ...ition the stud n the reverse lever to release the rewind latch from the rewind lever when the reverse lever has moved counter clockwise past its latch 005 to 008 Figure 44 RiJfIHSe Lefler Stud 15 BUTT...

Page 47: ...between the teeth on the primary cam Figure 38 The sensing finger should be located ver tically to center between the ribbon spool flanges 11 LEFT REVERSING ECCENTRIC With the re verse lever latched...

Page 48: ...ears the d ive wheel by i2 Figure 46 20 TRANSFER WHEEL BELLCRANK With the rewind lever latched position the bellcrank eccentric mounting stud so that the transfer wheel clears the flange on the power...

Page 49: ...ence in ring and cylinder between upper and lower case characters by using a strip of 003 paper as a feeler gauge between the platen and typebar when checking the lower case and additional strips when...

Page 50: ...ndividual parts for former style ribbon feed as sembly wi II be avai lable for r placement purposes If the former style assembly must be replaced it will be necessary to order B M 1271389 lvIodified R...

Page 51: ...inger extension should be formed so that it unlatches the reverse lever when the tip of the sens ing finger is 1 8 1 16 from the spool shaft Fig I 2 UNLATCHING POINT Figure 2 Drive and Check Clutches...

Page 52: ...es when the left drive gear is 005 to 015 to the right of the driven gear Figure 6 n ME SHED POSITION 030 _040 Figure 5 Figure 6 Right Sensing Cam Adjust so when the sensing finger is bot romed in the...

Page 53: ...ion of Cone Follower Form the side extension of the cone follower so when the rewind button is held depressed at the end of a rewind cycle the secondary cam will travel 7 8 to full travel up the incli...

Page 54: ...button when in the center lift position NOTE In order to rewind the ribbon to the right the following steps shouId be fo IIowed With the machine on and the left drive gear engaging the left driven gea...

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Page 56: ...1118295 25 Clutch spring 193 1071687 15 Spring 1271389 35 00 F I B M modified 168 219633 01 Clip 194 1116341 1 00 Latch fabric ribbon feed 169 1078469 15 Screw 195 196298 01 Screw 170 1063797 35 Colla...

Page 57: ...purposes order 1271389 F 1 B M Modified Fabric Ribbon Feed B M 1271009 is no longer available Use present stock unti I depleted Parts Manua I Changes Delete 1118354 page 17 and 1271009 page 18 Model C...