US2085609A - Type wheel typewriter - Google Patents

Type wheel typewriter Download PDF

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Publication number
US2085609A
US2085609A US735693A US73569334A US2085609A US 2085609 A US2085609 A US 2085609A US 735693 A US735693 A US 735693A US 73569334 A US73569334 A US 73569334A US 2085609 A US2085609 A US 2085609A
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United States
Prior art keywords
type wheel
type
carriage
wheel
lever
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Expired - Lifetime
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US735693A
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English (en)
Inventor
Schonfelder Herbert
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Individual
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Individual
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Publication date
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Publication of US2085609A publication Critical patent/US2085609A/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J1/00—Typewriters or selective printing mechanisms characterised by the mounting, arrangement or disposition of the types or dies
    • B41J1/22—Typewriters or selective printing mechanisms characterised by the mounting, arrangement or disposition of the types or dies with types or dies mounted on carriers rotatable for selection
    • B41J1/32—Typewriters or selective printing mechanisms characterised by the mounting, arrangement or disposition of the types or dies with types or dies mounted on carriers rotatable for selection the plane of the type or die face being parallel to the axis of rotation, e.g. with type on the periphery of cylindrical carriers

Definitions

  • This invention relates a type wheel typewriter, in which the type wheel is turned bymeans of an adjusting lever moving over a 'letter seale 'and movable parallel to the platen and 5 a rack connected with the lever and engaging a gear coaxial with the type wheel 'for adjusting the'type to be printed, and displaced for printing towards the platen bymoving the adjusting lever and simultaneously securing the position of the adjusted type.
  • the adjusting gear with which the type wheel is connected will to a slight extent roll over the rack whereby the adjustment is altered and printing unfavorably aflected.
  • a tooth of a diso non-rotatably yet axially displaceably coupled with the type wheel and provided with guide teeth on its circumterence between two fixed guide tongues having sloping entering ends cannot eliminate this defect, as the point fixed by' the guide tongues'is -located not directly underneath the type to be printed and the motion or the typ' 'wheel about the fixed pin is rendered dii'iicult at least if the type wheel is prevented from lateral motion by the guide tongues and the adjustlng rack.
  • the defects of the known machines are eliminated by arranging the guide .of a slide plate Carrying the type v wheel and rectilin'early movable towards the platen directly in the base plate of the machine, in which is located also a toothed member for lo'cking the type wheel in adjusted position, the teeth of said member being engaged during printing motion by a looking pin dis- 'posed on the underside of the adjusting rack.
  • this guiding' of the type wheel is further utilized for eflecting motion of the carriage in a very simple manner.
  • a spring-actuatedpawl is disposed on'the slide -plate carrying the type wheel so as to engage the carriage feed rack during motion or the slide plate to move the carriage for the width of one letter, and the spacing between the characters is eflected by axially turning the' adjusting lever and thus bringing a looking member connected therewith into the plane of the locldng teeth so as to strike thistoothed member and limit the travel of the slide plate in such a way that the carriage is moved but the type wheel cannot strike against the platen.
  • Figure 1 is a diagrammatic view of the machine according to the Invention with a portion of the front covering and the adiusting scale removed to show the parts of the adjusting device disposed underneath;
  • Fig. 2 a plan after removal of the carrlageand the covering of the adjusting device;
  • Fig. 3 a front view of the carriage;
  • Fig. 4 an end view thereof showing the left end;
  • Fig. 1 is a diagrammatic view of the machine according to the Invention with a portion of the front covering and the adiusting scale removed to show the parts of the adjusting device disposed underneath
  • Fig. 2 a plan after removal of the carrlageand the covering of the adjusting device
  • Fig. 3 a front view of the carriage
  • Fig. 4 an end view thereof showing the left end;
  • Fig. 6 a view of a modified construction of a type wheel.
  • the machine comprises the base plate l and two upright frame walls 2, 3 and the guide 4 for the carriage.
  • a guide rod 5 is secured which carries a longitudinally displaceable and rotatable sleeve 1 provided with an edge-like adjusting mark 6. 5 .
  • the sleeve 1 has two downwardly extending arms 3 to the ends of which a rack 3 is secured.
  • 2 30 is with its lower end secured in the slide plate
  • 6 is secured, opposite to which a toothed or notched looking plate or comb
  • One of the arms 3 'of the slidable and rotatable sleeve 1 is fitted with a bush Il which accommodates an ad- Justlng lever 23.
  • the lever 20 is rotatable and provided at its free end with a knob IS. At its inner end, the adjusting lever 20 possesses a short lever arm 2
  • the end of the looking arm 22 roiecting from the under side of the rack 9 will be either in --the plane of the toothed looking 'plate i1 and thus limit the feed of the rack 9 by a motion of the arm 3 or the looking arm 22 will be withdrawn to such an extent that it will not interfere with the feed of the rack 9.
  • a shaft 23 is dis placeably disposed in the walls 2, 3, as indicated in Fig. 2, which projects from the outside of a wall to the extent of its displacement.
  • the shaft 23 carries the pawls 24 for moving the'ribbon spools, the pawls being pressed by a' spring, not shown, which is arranged On the shaft 23-, into the teeth of the spool feed gears 25 according to the position of the shaft.
  • 'Ihe shaft 23 carries further a broad stop arm 23 which is struck by the shaft
  • the carriage guide 4 is provided with stepped stops 21 for limiting the motion of the carriage in one direction and with astop 23 on' the other side u :for iimiting carriage motion-in the .other direction aosasoo as well as with adjustable lever stops, not shown, on both-front sides of the carriage.
  • a paper guide plate 29 with feed rolls 30 and a shaft 3i is arranged in the walls 32 of the platen carriage and is pressed with the end of the roll against theroller 33 by torsion Springs, not shown.
  • a paper support or table 35 is secured to the walls 32 of the frame. which with its downwardly directed extension 36 rests on the rear end of the paper guide plate 29, so that the roll end of the latter together with the rolls 30 can be moved away from the platen 33 by pushing back-the paper table 35.
  • the carriage frame rests with a rack 31 secured to the under side thereof on a horizontal guide formed by pin-like elevations 38 of the base plate l.
  • a rack 31 secured to the under side thereof on a horizontal guide formed by pin-like elevations 38 of the base plate l.
  • the carriage is moved by a pawl articulated to a lateral extension 39 of the slide plate l3 and held in position by a tension spring 4I.
  • the pawl 40 forms with the extension 39 of the slide plate
  • a pawl 42 articulated to the base plate l on the other side of the slide plate
  • the pawl 42 is Controlled and held in position by a tension spring 45 and a tension member 41 connected with a back space key 46, the spring 45 and the member 41 engaging a short arm 48 of the pawl, and the length of the tension member 41, which is flexible, is dimensioned so that the spring 45 will hold the pawl in the one end position of the slot 43.
  • 0 can be raised and lowered on its shaft I2 and a coupling pin 49 connecting the shaft with the gear H by means of a cranked shaft 50 which is movably disposed in the wall 2 and the boss 5i of the frame of the machine and r fltted with the shift keys 52, 53.
  • the stroke of these keys as well as that 'of the back space key 46 can be accurately regulated by means of screwgdin stop screws 54.
  • the walls 2, 3 of the machine frame have roofshaped tops as stated and serve for receiving the roof-shaped covering of the type adjusting and printing device.
  • This covering consists of a front Vertical wall and an upper obliquely ascending wall 56.
  • the Vertical wall 55 contains clearances for the shift keys 52, 53 and the back space key 46 as well as a slot, not shown, for the passage of the adiustin'giever 20'.
  • a double scale 51, 58 with an interposed window 53 is provided to render' the adjusting mark 6 visible.
  • the oblique wall 56 is' disposed approximately vertically to the line of sight.
  • the main parts of the machine are mime from artificial materials, such as artiflcial resin, that can be formed by Dressing.
  • artificial materials such as artiflcial resin, that can be formed by Dressing.
  • the adjustng gear, the carriage looking gear and the ribbon rolls with the transport toothing may -be produced as pressed or cast pieces from artificial materials of the kind indicated.
  • the button Is is grasped with the lever 20 in its raised position and the member 22 is lifted by rotating the button.
  • the frame formed -by the members?, 8, and 9 is now moved along the rod 5 until the index 6 is positioned in front of the character on one of the scales 51 and 58 which it is desired to print.
  • the rack moves longitudinally of the rod 5
  • the type wheel lll is caused to rotate by the engagement of the rack 9 with the gear i i at the bottom of the type Wheel IO and the character selected is brought into alinement with its printing position in front of the platen 33.
  • the normal position in elevation of the type wheel is such as to print a character (lower case) in the .upper or first row of characters.
  • the appropriate key 52 or 53 is depressed to raise the type wheel on its shaft and thus to bring the desire'd character' into printing position.
  • the button 19 is now depressed. This rocks the frame members T, 8, and 9, on the rod 5 and causes the gear ii on the type wheel shaft to move rearwardly and carry the type wheel with it so that the proper type character Strikes the ribbon and carries it against the paper on the platen '33.
  • the type wheel is guided for rectilinear movement by the bar id.
  • pin IG enters between two of the teeth on the f xed comb IT so that proper alinement of the type With the place at which it is to strike is effected.
  • pin [6 and comb ll As the shaft
  • rearward movement of the slide 13 causes the pawl 40 to bias and thus move the rack 31 and carriage one space to the left.
  • a typewheel typewriter comprising, in comi binationja baseplate, upright side walls on said.
  • a gear on the lower end of said type wheel and rotatably disposed therewith on said Vertical shaft said gear being in mesh with said rack
  • means for raising and lowering the type wheel means for holding said slide plate with said gear and type wheel in front end position and returning it thereto
  • a lever movable parallel to the platen for turning and displaoing said type wheel to adjust and print a type said lever being carried by one of said arms, a downwardly extending looking pin on the underside of said rack, and a toothed plate firmly arranged in said base plate, said looking pin engaging said toothed plate during the printing motionto secure said type wheel in adjusted position.
  • a type wheel typewriter comprising a looking arm and means for connecting said arm with the' lever, said arm being adapted to be brought into engagement with the toothed plate by the lever to limit the travel of the slide plate and thus prevent the type wheel from striking the platen during the motion of the carriage.
  • a typewriter of the class having a type wheel and Operating means for the type wheel including an Operating lever mounted for sliding and swinging movement and an indicator sliding with the lever; a base, a carriage mounted to move transversely of the base, a platen supported on said carriage, and a casing at the front of the typewriter covering the type wheel and having a longitudinal sight slot wherethrough the indicator may be observed.
  • a typewriter of the class having a type wheel and Operating means for the type wheel including an Operating lever mounted for' sliding and swinging movement' and an indicator sliding with the lever; a base, a carriage mounted to: move transversely of the base, a platen supported on said carriage, a casing at the front of the typewriter covering the type wheel and having a longitudinal sight Slot wherethrough the indicator may be observed, and character scales on the casing extending longitudinally beside said slot.
  • a typewriter of the type wheel class having a shaft and type wheel therein, a base, a slide bar mounted on said base to slide forwardly and backwardly thereon in a rectilinear path, said bar forming a support for the shaft and type wheel, a carriage mounted at the rear of said base to slide transversely thereof, a rack fixed to said carriage and extending longitudinally thereof.
  • means. to actuate said bar said type wheel having a plurality of rows of type, a Crank shaft supported from said base for rocking movement, said Crank shaft having a crank engaging the under side of the wheel, and manually operable means to rock the shaft selectively through a plurality of angles.
  • a type wheel for typewriters of the type 'wheel class including a body in the form of a truncated cone having its major base uppermost, and type characters carried on said body and extending in peripheral rows therearound.

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US735693A 1933-07-18 1934-07-17 Type wheel typewriter Expired - Lifetime US2085609A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE441387X 1933-07-18

Publications (1)

Publication Number Publication Date
US2085609A true US2085609A (en) 1937-06-29

Family

ID=6516038

Family Applications (1)

Application Number Title Priority Date Filing Date
US735693A Expired - Lifetime US2085609A (en) 1933-07-18 1934-07-17 Type wheel typewriter

Country Status (4)

Country Link
US (1) US2085609A (fr)
BE (1) BE404263A (fr)
FR (1) FR776719A (fr)
GB (1) GB441387A (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2498724A (en) * 1941-06-13 1950-02-28 Int Standard Electric Corp Telegraph transmitter
US4558964A (en) * 1982-11-26 1985-12-17 Matsushita Electric Industrial Co., Ltd. Print element and printing apparatus using same

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2498724A (en) * 1941-06-13 1950-02-28 Int Standard Electric Corp Telegraph transmitter
US4558964A (en) * 1982-11-26 1985-12-17 Matsushita Electric Industrial Co., Ltd. Print element and printing apparatus using same

Also Published As

Publication number Publication date
GB441387A (en) 1936-01-20
FR776719A (fr) 1935-02-01
BE404263A (fr)

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