US2020223A - Typewriting machine - Google Patents

Typewriting machine Download PDF

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Publication number
US2020223A
US2020223A US19471A US1947135A US2020223A US 2020223 A US2020223 A US 2020223A US 19471 A US19471 A US 19471A US 1947135 A US1947135 A US 1947135A US 2020223 A US2020223 A US 2020223A
Authority
US
United States
Prior art keywords
anchor plate
operating connections
frame
plate
connections
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US19471A
Other languages
English (en)
Inventor
Utz Anthony
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Royal Typewriter Co Inc
Original Assignee
Royal Typewriter Co Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Royal Typewriter Co Inc filed Critical Royal Typewriter Co Inc
Priority to US19471A priority Critical patent/US2020223A/en
Application granted granted Critical
Publication of US2020223A publication Critical patent/US2020223A/en
Priority to GB32482/35A priority patent/GB466136A/en
Priority to DER94874D priority patent/DE709118C/de
Priority to FR798474D priority patent/FR798474A/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • B41J7/00—Type-selecting or type-actuating mechanisms
    • B41J7/92—Impact adjustment; Means to give uniformity of impression
    • B41J7/94—Character-by-character adjustment

Definitions

  • This invention relates to new and useful improvements in typewriting machines generally, although more particularly to a machine wherein the spring tensions of the type actions are adjustable to vary the strengths of the springs to suit the individual operator.
  • lseveral objects of the invention are to provide a manually operable actuator for an adjustable anchor plate to which the springs are connected, and which is located at the front of the machine, whereby the operator may view an indicator which is associated with the actuator and whereby the latter may .be readily operated whenever it is desired to vary the tensions of the springs.
  • FIG. 1 A Figure l is a side elevation of a typewriti machine embodying my invention, certain of the parts being shown in dotted lines,
  • FIG. 2 is a front elevation thereof, some of the key levers being omitted for the sake of clarity, I
  • FIG. 3 is a vertical transverse sectional view taken on the line 3-3 of Figure 1, the key levers, ⁇
  • Figure 4 isa top plan view showing particularly the means for pivotally supporting the anchor plate, the front plate of the machine being shown in section, l l
  • Figure 5 is a vertical longitudinal sectional view through the machine
  • Figure 6 is an enlarged longitudinal sectional view through the machine showing particularly the means for supporting the anchor plate, the spring connection between the plate and one of the front links, together with the actuator for adjusting the anchor plate,
  • Figure 7 is a detail perspective view showing a slightly dilerent form-of scale indicia than is shown in Figure 2, and
  • Figure -8 is a front elevation of a still further modified form of scale indicia.
  • the general frame-of this vmachine includes a main frame A and a supplemental frame or mask B, the latter being removably attached to the formerin the well knownmanner.
  • the main frame A includes side walls 5, 5 which support the usual typewriter carriage C having the usual platen 6 ⁇ mounted thereon.
  • l'Ihe walls 5,15 are connected at a point in advance of the carriage C by a front wall l, and located directly above said front wall 1 is a frontplate 8 which forms a part of the mask B of the frame.
  • a plurality of type actions are located within the frame and include type bars 9 which are arranged side by side between said front plate 8 and the platen 6.
  • the type bars 9 are pivoted on an arcuate rod I 0 carried by a segment II. ⁇ A
  • the key levers I2 are respectively provided with upstanding arms I8 having pin and slot connec- 25 ing movement and also function toyieldably re- 35 tain the associated key levers I2 at the upper. ends of the slots vI4 and against a stop 2l which is mounted on the front wall 1.
  • the upper ends of these springs 20 are connected to a vertically adjustable anchor plate22 which is disposed directly in rear of the front plate 8 of the frame and extends transversely of and is common to all oi said front links I5.
  • the anchor plate 22 is provided at its ends with rearwardly and downwardly inclined lever arms 23, 23 which 45 are ⁇ -fulcrumed on pivot, screws 24, ⁇ 24 attached to the side walls 5, 5'of the main frame A.
  • the ends of the lever arms 23 extend rearwardly beyond the pivots 24 to form short arms 25, 25, and counterbalancing springs 26, 26 are connected at their 50 upper ends to said short arms 25, 25 and at their lower ends to the side walls 5, 5 of the main frame.
  • tensions of the springs 20 will be simultaneously and uniformly reduced, whereas by moving the anchor plate upwardly away from the front links, the tensions of the springs will be simultaneously and uniformly increased.
  • an actuator bar 21 which is positioned intermediate the front plate 8 and the anchor plate 22 for movement along a straight horizontal line.
  • the anchor plate 22 is provided with spaced inclined cam slots 28, 28, the angles of inclination being identical and the slots being located equidistant from the ends of the anchor plate.
  • the actuator 21 is provided at its ends with downwardly extending arms 29, 29 which terminate in rearwardly extending cam fingers 30, 30 engageable in the cam slots 28, 28.
  • the arms 29, 29 have a sliding engagement at 29', 29' with the upper part of the front -wall 1.
  • Extending upwardly from the actuator and rigidly connected thereto is a guide 21 which is sldable between the guide rail 33 and the front plate 8.
  • a combined finger-piece and indicator 36 and associated with the slot 32 of the front plate 8 are scale indicia with which the combined finger-piece and indicator 38 is adapted to cooperate to indicate to the operator the position of the anchor plate 22 and the resultant tension of the springs 28.
  • these indicia are shown as consisting of a plurality of spaced marks 31, a minus sign 38 at the left hand end of the slot and a plus sign 39 at the right hand end of said slot.
  • the anchor plate 22 may be readily adjusted either upwardly or downwardly with respect to the front links I5 by the operator who merely shifts the actuator 21 to the right or left through the medium of the combined finger-piece and indicator bar and the lever, of an anchor plate located above said connections, coil springs respectively connected to said operating connections and to the anchor plate, and a single means cooperating with the anchor plate on opposite sides of the 5 center thereof for bodily adjusting the anchor plate towards and from the operating connections to vary simultaneously and uniformly the tensions of said springs.
  • each action including a pivoted type bar, a key lever, and operating connections between the bar and the lever, of an anchor plate extending transversely above and common to all of said l5 operating connections, said anchor plate being mounted to swing upwardly and downwardly relative to said operating connections, coil springs respectively connected.
  • said operating connections and to the anchor plate and a single means 20 cooperating with the anchor plate'on opposite sides of the center thereof for bodily adjusting the anchor plate towards and from the operating connections to vary simultaneously and uniformly the tensions of said springs.
  • each action including a pivoted type bar, a key lever, and operating connections between the bar and the lever, of an anchor plate located 30 above said connections, coil springs respectively connected to said operating connections and to the anchor plate, and a single manually operable means having cam connections with the anchor plate on opposite sides of the center there- 35 of for bodily adjusting the latter towards and from the operating connections to vary simultaneously and uniformly the tensions of said springs.
  • each action including a pivoted type bar, a keylever, and operating connections between the bar and the lever, of an anchor plate located above said connections, coil springs respectively connected to said operating connections and to 45 the anchor plate, said anchor plate being provided with an upwardly inclined cam slot, and a manually operable actuator movable in a straight horizontal line and engageable with said cam slot for bodily adjusting the anchor plate towards and 50 from the operating connections to vary simultaneously and uniformly the tensions of said springs.
  • each action including a pivoted type bar, a key lever, and operating connections between the bar and the lever, of an anchor plate locatedabove said connections, coil springs respectively connected to said operating connections and to the anchor plate, said anchor plate being provided with horizontally spaced upwardly inclined cam slots, and a manually operable actuator bar movable in a straight horizontal line and having cam fingers engageable in said cam slots for bodi- ,65 ly adjusting the anchor plate towards and from the operating connections to vary simultaneously and uniformly the tensions of said springs.
  • each action including a pivoted type bar, a key lever, and operating connections between the bar and the lever, of an anchor plate extending l transversely above and common to all of said operating connections, said anchor plate being 75 mounted to swing upwardly and downwardly relative to said operating connections, coil springs respectively connected to said operating connections and to the anchor plate, a counterbalancing spring connected to the anchor plate, and means for bodily adjusting the anchor plate towards and from the operating connections to vary simultaneously and uniformly the tensions of said springs.
  • each action including a pivoted type har, a key lever, and operating connections between the bar and the lever, of an anchor plate located above said connections, coil springs respectively connected to said operating connections and to the anchor plate, said anchor plate being provided with horizontally spaced upwardly inclined cam slots, counterbalancing springs respectively connected to the end portions of the anchor plate, and a manually operable actuator bar movable in a straight horizontal line and having cam fingers engageable in said cam slots for bodily adjusting the anchor plate towards and from the operating connections to vary simultaneously and uniformly the tensions of said springs.
  • a carriage mounted on the frameand including a platen, a plurality of type actions located within the irame and including type bars arranged side by side between the front plate and the platen, key levers, and operating connections be tween the key levers and the type bars, an anchor plate supported on the frame above the operating connections for movements toward and from said connections, said anchor plate being provided with an inclined cam slot, coil springs respectively connected to the anchor plate and to said operating connections, a manually operable actuator mounted in rear of the front plate for movements in a straight horizontal line and-engageable with said cam slot for bodily adjusting the anchor plate towards and fromv said operating connections to vary simultaneously and suitormly the tensions of said springs, and a fingerpiece attached to the actuator and operable from the exterior of the frame.
  • a typewriting or like machine the combination with a frame including a front plate having a horizontally extending slot, of a carriage mounted on the frame and including a platen, a plurality of type actions located within the frame and including type bars arranged side by side between the front plate and the platen,
  • the com- 20 K bination with a frame including a front plate, of a carriage mounted onthe frame and including aplaten, a plurality of type actions located within the frame and including type bars arranged side by side between the front plate and the 25 platen, key levers, and operating connections between the key levers and the type bars.
  • an anchor plate located in rear of the front plate and extending transversely above and common to all of said operating connections.
  • said anchor plate 30 being pivotally mounted on the frame to swing upwardly and downwardly relative to said operating connections, coil springs respectively connected to said operating connections and to the anchor plate, and manually shiftabley means 35 mounted on the front plate and cooperating with theanchor plate for bodily moving the latter towards and from said operating yconnections to vary simultaneously and uniformly the tensionsI of said springs.
  • an anchor plate located in rear of the front plate and extending transversely above and common to all of said operating connections, said anchor plate being pivotally mounted on the frame to swing upwardly and downwardly relative to said operating connections, coil springs respectively connected to said operating connections and to the anchor plate, counterbalancing springs respectively connected to the end portions of the anchor plate and to the frame, and manually shiftable means mounted on the front plate and cooperating with the anchor plate for bodily moving the latter towards and fromsaid operating connections to vary simultaneously and uniformly the tensions of said springs.
  • each action including a pivoted type bar
  • a key lever and operating connections between the bar and the lever including a front link, of an anchor plate extending transversely above and common to all of said front links, coil springs respectively connected to the front links and to the anchor plate, and a single meanscooperating with the anchor plate on opposite sides of the center thereof for bodily adjusting the an- 15 chor plate towards and from the front links to vary simultaneously and uniformly the tensions of said springs.
  • a frame including a front plate having a slot, of scale indicia located on the front face of the front plate and cooperatively positioned relative to the slot, a carriage mounted on the frame and including a platen, a plurality of typeactions located within the frame and including type bars arranged side by side between the front plate and the platen, key levers and operatingr connections between the key levers and the type bars, an anchor plate supported on the frame in rear of said front plate and above the operating connections for movements toward and from said connections, coil springs respectively connected to the anchor plate and to said operating connections, and a combined finger-piece and indicator operatively connected to the anchor plate and projecting forwardly through the slotI in the front plate for bodily moving said anchor plate towards and from said operating connections to vary simultaneously and uniformly the tensions of said springs and to cooperate with said scale indicia to indicate the amount of tension of said springs.

Landscapes

  • Supply, Installation And Extraction Of Printed Sheets Or Plates (AREA)
  • Character Spaces And Line Spaces In Printers (AREA)
  • Preliminary Treatment Of Fibers (AREA)
US19471A 1935-05-02 1935-05-02 Typewriting machine Expired - Lifetime US2020223A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
US19471A US2020223A (en) 1935-05-02 1935-05-02 Typewriting machine
GB32482/35A GB466136A (en) 1935-05-02 1935-11-22 Improvements relating to actions for typewriting machines
DER94874D DE709118C (de) 1935-05-02 1935-12-01 Vorrichtung zum Veraendern der Spannung der Typenhebelrueckzugfedern an Schreibmaschinen
FR798474D FR798474A (fr) 1935-05-02 1935-12-02 Perfectionnements aux machines à écrire

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US19471A US2020223A (en) 1935-05-02 1935-05-02 Typewriting machine

Publications (1)

Publication Number Publication Date
US2020223A true US2020223A (en) 1935-11-05

Family

ID=21793400

Family Applications (1)

Application Number Title Priority Date Filing Date
US19471A Expired - Lifetime US2020223A (en) 1935-05-02 1935-05-02 Typewriting machine

Country Status (4)

Country Link
US (1) US2020223A (fr)
DE (1) DE709118C (fr)
FR (1) FR798474A (fr)
GB (1) GB466136A (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2886158A (en) * 1956-06-01 1959-05-12 Alderwerke Vorm Heinrich Kleye Mechanism for varying the stroke of the keys of power-operated typewriters
US3409111A (en) * 1967-06-07 1968-11-05 Scm Corp Keylever touch control with compensating means directly proportional to keylever touch

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1024986B (de) * 1955-02-26 1958-02-27 Olympia Werke Ag Typenhebelantrieb fuer Schreibmaschinen
NL289857A (fr) * 1962-03-06

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2886158A (en) * 1956-06-01 1959-05-12 Alderwerke Vorm Heinrich Kleye Mechanism for varying the stroke of the keys of power-operated typewriters
US3409111A (en) * 1967-06-07 1968-11-05 Scm Corp Keylever touch control with compensating means directly proportional to keylever touch

Also Published As

Publication number Publication date
DE709118C (de) 1941-08-06
FR798474A (fr) 1936-05-18
GB466136A (en) 1937-05-24

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