US1741328A - Typewriting machine - Google Patents

Typewriting machine Download PDF

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Publication number
US1741328A
US1741328A US242689A US24268927A US1741328A US 1741328 A US1741328 A US 1741328A US 242689 A US242689 A US 242689A US 24268927 A US24268927 A US 24268927A US 1741328 A US1741328 A US 1741328A
Authority
US
United States
Prior art keywords
lever
type
pawl
type bar
key
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
US242689A
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English (en)
Inventor
William O Michelsen
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 US242689A priority Critical patent/US1741328A/en
Priority to GB36586/28A priority patent/GB303060A/en
Priority to FR666095D priority patent/FR666095A/fr
Priority to DER76634D priority patent/DE556270C/de
Application granted granted Critical
Publication of US1741328A publication Critical patent/US1741328A/en
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
    • B41J1/00—Typewriters or selective printing mechanisms characterised by the mounting, arrangement or disposition of the types or dies
    • B41J1/08—Typewriters or selective printing mechanisms characterised by the mounting, arrangement or disposition of the types or dies with types or dies carried on sliding bars or rods

Definitions

  • This invention' relates to a type action particularly adapted for power driven machines in which there are a plurality of sliding type' bars which converge 'to a common prlntlng center and wherein each type bar is provid- ⁇ ed with a plurality of groups of two type v each.
  • Each type bar is operated by two key levers which are adapted to selectl corresponding types of each group while the platen is shifted in the -usual o'r any desired manner to bring it intoa position to cooperate with one or the other of the ty e of each group.
  • the sliding type toggle mechanism which reaches a substan ⁇ line position fat the time of printing so that the actual printingis per? formed by pressure rather than by impact. Means are provided for obtaining a relative adjustment between the normal position of the platen and the type bars in order that the force of the imprmtlmay be varied as desired for manifolding.
  • the invention also comprises speciic power operated mechanism for actuating the type bars by which either or both of the above de.
  • Figure 4 is a side elevation of a portion of the power actuated mechanism showing the parts in full lines at the end of a depression of a key and certain parts in dotted lines at a later point in the operation of the device. ⁇
  • Figure 5 is a similar view showing in full lines parts in a position subsequent to the dotted line position of Figure 4 and in dotted lines certain parts during the return movement thereof.
  • Figure 6 is an guide.
  • Figure 7 is a similar view showing a modification.
  • the invention may-be embodied in typewriting machines which diier widely in other and for this reason the other instrumentalities of the typewriting machine have not been illustrated.
  • the usual platen A which is movable to a second position indicated in dotted lines by any usual or desired form of case shift mechanism.
  • Each type bar 1 is mounted to slide and is provided with four type a, b, c, and d
  • the type bar When the platen is in its lower position' as shown in Flgure 1, and the type bar is given merely its longitudinal movement, it will print from the type b as shown in this figure. If the type bar is simultaneously lifted consequent upon the depression of the other key which controls the same, the imprint will be from the type d which is the lowest type of' the other group. If it is desired to print from types a or c, the platen is shifted to the dotted lineA position and the two key levers control the selection of these types in similar manner.
  • Each type bar 1 slides on a supporting and guiding member 2 which is pivoted at 3 to a fixed part of the machine.
  • this guide member is formed with bent over parts 4: at the top and bottom which engage one face of the sliding type bar and has indent projections 5 which engage the other face of the type bar.
  • bent over ears 6 on the guide member engage the upper and lower edges of the type bar.
  • one of the guide members passes on each side of the type bar and serves to guide the rear end thereof in its movement. lt is possible, however, to omit the web portion 10 and employ two separate parallel links or a single link member may be used.
  • Pivoted at 11 to the link 9 is one end of a short link 12 which together with the link 9 forms a toggle member.
  • This link 12 is pivoted at 13 at its other end to a supporting member 14 mounted in the frame of the machine.
  • An extension 15 from this member passes through a bar 16 carried by the machine frame into which. bar is threaded a screw member 17 having an intermediate reduced portion 18 in which fits a lug 19 projecting from the extension 15. It is obvious 'that by means of the screw 17 the position of the supporting member 14 may be changed and the effective printing position of the type bar varied.
  • a set screw 20 holds the parts in adjusted position.
  • Pivoted at 21 to an ear of the link 12 is one end of a link 22 which is pivoted at its other end at 23 to a lever including a. pair of arms 24, one arm of which passes on each side of the support 14.
  • This lever 24 is pivoted to the support 14 at 25 and one of the arms thereof is extended downwardly and forwardly at 26.
  • the lower end of the extension is pivoted at 27 to an intermediate point of al lever 28, one end of which is pivoted at 29 to a pawl carrier 30.
  • the other end 3l ci the lever 28 is connected by a spring 32 to a point 33 on the support 14 and this spring tends to return the parts to normal position.
  • the extension 26 has an odset ear 34which is designed to Contact with a resilient 'stop 35 at the end ofthe operative movements of the parts. This stop is carried by an extension 36 on the supporting member 14.
  • the pawl carrier is loosely mounted on a constantly rotating power shaft 37 to which is rigidly fastened a ratchet wheel 38. Also loosely mounted on the shaft 37 is a member 39, one end of which is forked to engage a pin 40 eccentrically mounted on an adjustable member 41. The other end 42 of this member is provided with an inclined surface 43, the purpose of which will be hereinafter set forth
  • Each type action is controlled by two key levers B and. C which are pivoted in the usual manner at Upon depression of the key lever ld, the type bar 1 will be moved torwardly to printingposition but will not be raised, upon depression of the key lever C the type bar will be raised and moved forwardly to printing position.
  • a tri lever 44 is pivoted at 45 in a-frame mem er 46 and the upper endof this lever is connected by spring 47 to an angular member 48 fast to a frame portion 49. intermediate its ends the lever 44 is provided with two elongated slots videdpwith a casing 56 adapted to contain a v resilient or noiseless pad 57, the end of which may be enlarged.
  • Pivoted tothe ⁇ pawl carrier 30 on an axis 58 is a pawl 59 having an engaging tooth 60, and a short arm 61 is also pivoted on the axis 58.
  • a pin 62 on the pawl is connected to a pin 63 on the arm 61 by means of a'spring 64vwhich, when the parts are in the normal position, lies in a straight line approximately passing through/ the axis of thepivot 58.
  • the pin 63 engages the under edge of a fixed frame 'member 65.
  • the upper end of the pawl car rier 30 is rovided with a sound deadening stop 66 and also with an ear 67.
  • This pawl carrier is also provided with another ear 68 which, when the parts are in the Figure l position, engages the under side of the arm 6l.
  • This arm is, therefore, held at this time between the fixed member and the ear 68 on the pawl carrier and cannot have any independent movemcnt at this time.
  • a lever 69 is pivoted t0 the frame member 49 to turn ⁇ on .theaxis 3 and an ear-70 on said lever is connected by a spring 71 to an lear 72 on the type bar guide or carrier 2.
  • the lower end of the lever 69 has a pin 74 projecting to lone side thereof and a push rod 75 which is pivoted at one end at l76 to the lever engage the pin 7 4.
  • lThis pushv rod 75 is connected by a link 7 7 tothe keylever B so that when this lever is depressed the push rod 75 is moved out of engagement with the pin 74 to the dotted vline position of Figure 1, and consequently said rod has an idle movement.
  • the key lever C When itis desiredto print from either type c or d, the key lever C is depressed. Inasmuch as thepush rod 75 is not connected with the key lever C, the depression of said ⁇ key lever willv not disengage the push rod from the pin 74. Consequently, when the key lever C is depressed the operating lever 24 will be swung, the push rod 75 will be moved 'to swing the lever G9 to raise the type bar, and the toggle 9, 12 will be actuated to slide the type bar to print. The type bar is raised through the lever 69 pulling' the spring 71 which in turn rocks the pivoted support 2 until the eccentric'stop 84 engages the stop screw 81. lhus the raised position of the type bar is predetermined by the setting ofthe eccentric stop 84 and the..
  • the type bar reaohesits raised position prior to the completion ⁇ of the sliding or printing movement thereof, and although the toggle 9, 12 and the push rod 75 continue to move, the push rod will have no effect on the swingu ing support 2 because permits the lever 69 to be further rocked by the push rod. rlhus, in this raised position of the type bar,'the type d maybe printed when the platen is in its lower position and the type e printed when the platen is in its upper position.
  • a modiiication of this construction is shown in ligure 3.
  • a 'trough like member 85 provided with a slotted cover 8G and the arm 82 from tue type guide 2 projects upwardly through a slot into the chamber thus formed.
  • rlhis chamber has inclined sides S? and balls 88 are placed therein on opposite sides of the arm 82 ot the type guide.
  • Adjustable stop screws 89 and 90 are lthreiuled into opposite sides ot the member 85 and when the type carrier is rocked, it will engage one or the other of the balls 88 and roll the same up 'the incline until it contacts with the proper stop screw 89 or 90.
  • a type action comprising a. slidable type bar provided with a plurality of groups of type, key levers associated with the type bar and corresponding in number to the number ot groups, a movable sV '.:port for the type bar, power operated meas-. 4 controlled by the depression oi each ke" ⁇ lever for moving ⁇ the type bar to the printing point, and mechanism normally in position to loe actuated by said power operated means Jtor moving said support.
  • a type action comprising a slidable type bar provided with a plurality of groups of type, key levers associated with the type bar and corresponding in number to the number ot' ⁇ groups7 a movable support for the type ban3 power operated means controlled by the depression oit each key 'lever for moving the type bar to the printing point, mechanism normally in position to be actuated by said power operated means for moving said support, and means controlled by one key leverv for rendering said mechanism inoperative.
  • a type action comprising a slidable type bar provided ⁇ with a plurality of groups of f type, key levers associated with the type bar and corresponding in number to the number of groups, a pivoted support for' the type bar., power operated means controlled by the depression of each key lever for moving the type, bar to the printing point, and normally operative connections between said power opprensas erated means and the support for tilting the latter.1
  • a type action comprising a slidable type 'bar provided with a plurality of groups of type, key levers associated with the type bar and corresponding in number to the number of groups7 a pivoted support for the type bar, power operated means controlled by the depression O each key lever ⁇ for moving the type liar to the printing point, normally operative connections between said power operated means and the support for tilting the latter, and means controlled by one key lever for breaking said connections.
  • a type action comprising a slidable type bar provided with a plurality of groups of typea key levers associated with the type bar and corresponding in number to the number oit1 groups, a pivoted support i or the type bar, power operated means controlled by the depression o't each key lever tor moving the type bar to the printing point9 and normally operative connections between said power operated means and the support which include a pivoted lever yieldingly connected to the support.
  • a type action comprising a slidable type bar provided witha plurality of groups of type, key levers associated with the type bar and corresponding in number to the number ot' groups, a pivoted support for the type bar, power operated means controlled by the depression ot each key lever for moving the type bar to the printing point, normally operative connections between the power operated means and the support which include a pivoted lever yieldingly connected to the support, and means controlled by one key lever for breaking said connections.
  • il. t type action comprising a slidable type bar provided with a plurality ot groups of type. key levers associated with the type bar and corresponding in number to the number oi" groups, a movable support for the type bar, power operated means operative upon the depression of one of said key levers for moving the type bar to the printing point and for moving said support to select a different group, and means includinfr elements having a rolling contact for silently limiting the movement of said support.
  • Fower driving means for type bar actions comprising a constantlyrotating shaft, a ratchet wheel thereon, a pawl carrier loosely mounted on said shaft, a pawl on said carrier, key operated means formoving said -pawl into engagement with the ratchet so that the carrier will rotate with the shaft9 and a spring which holds the pawl in either operative or inoperative position.
  • Power driving means for type bar acl'mounted on the shaft, a pawl pivoted to the carrier, an arm also pivoted to the carrier on one side of the axis of the pawl and arm and tending'to hold the pawl in engagement with i the pawl and arm and normally pawl out of engagement with the ratchet, key
  • Power driving -means for type bar ac-4 tions comprising a constantly rotating shaft, a ratchet wheel thereon, a pawl carrier loosely mounted on the shaft, a pawl pivoted to the carrier,an arm also'pivoted to the carrier on the same axis as the pawl, a spring connecting operated means lpendently of thearm into engagement with the ratchet wheel, the spring then lying on the ratchet, and means operative during the rotation of the pawl carrier for moving the arm to bring the spring to the other side ot the axis. 1 f
  • Powerdriving means for type bar ac- .tions comprising a constantly rotating shaft
  • a ratchet wheel thereon, a pawl carrier loosely necting the pawl ratchet, key o Athe arm duringlthe rotation a pawl pivoted to the mounted on the shaft, carrier, an arm also pivoted to the carrier on lthe same axis as the pawl,fa spring connecting the pawl and arm and normally holding the pawl out of engagement with' the ratchet, key operatedmeans or moving the pawl independently of the -arm into engagement lwiththe ratchet wheel, the spring then lying on one side of the .axis of the pawl and arm 'and tending to hold the pawl in engagement with the ratchet', and fixed means engaged by of the pawl care arm ⁇ independently of the rier to move t to the other side ofl pawl to bring the spring the axis.
  • Power driving means for type bar actions comprising a constantly rotating4 shaft, a ratchet wheel thereon, a pawl carrier loose- -ly mountedv onthe shaft, a pawl pivoted to the carrier, an arm also pivoted to the carrier onthe same axisas the pawl, a spring conand arm and normally holding the pawl out of engagement with the erated means for moving the pawl indepen ently of thev arm into engagement with the ratchet Wheel, the spring then lying on one side of the axis of the pawl and arm and tending to hold the pawl in engagement with the ratchet, a fixed stop for limiting the movement of the arm in( one direction, and a stop on the carrier for limiting its movement in the other direction.
  • a typel action comprising a type bar mounted for sliding andfjtilting'movements, two key leversr associated with said type bar, a movable support for the type'bar, a conholding the y bar will be moved to printing position and stantly rotating shaft, a ratchet wheel fixed l to the shaft, a pawl carrier loosely mounted on said shaft, a pawl on said carrier, connections including a lever between the pawl carrier andthe type bar'for moving the latter to printing position upon engagement of the pawl with the ratchet whee means for moving said pawlinto engagement with the ratchet wheel upon depression of either key lever, ra lever and connections between' the leverand the type bar support for tilting the 'support upon movement of the lever, a push rod ,pivotally connected to the lever of the type bar moving means andiiormally engaged with the support tilting lever whereby upon depression of one key lever the type the support tilted, and a connection between the push rod and
  • a type action comprising ab type bar ymounted for sliding and tilting movements
  • a movable support for the type bar a constantly rotating shaft, a ratchet wheel'iixed to the shaft, a pawl carrier loosely mounted on said shaft, a pawl on said carrier, yieldable means for normally holding the awl out of engagement with the ratchet w eel,
  • the combiv nation with a type bar support mounted to swing about a xed axis, of a typebar slidably mounted on said support, and means for swinging the support and sliding the type bar including an operating lever, a lever fulcrumed on the fixed axis of the type bar support, a spring yconnecting the ast mentioned lever'and the support, a stop means for limiting the upward Swingin movement of the type bar support, a pus rod operatively connected between the levers connections between the operating leverand the ty e bar for sliding the latter, and key contro led means for actuating the operating lever.

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  • Accessory Devices And Overall Control Thereof (AREA)
US242689A 1927-12-27 1927-12-27 Typewriting machine Expired - Lifetime US1741328A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
US242689A US1741328A (en) 1927-12-27 1927-12-27 Typewriting machine
GB36586/28A GB303060A (en) 1927-12-27 1928-12-11 Improvements in actions for typewriting machines
FR666095D FR666095A (fr) 1927-12-27 1928-12-20 Perfectionnements aux machines à écrire
DER76634D DE556270C (de) 1927-12-27 1928-12-20 Typenstangenschreibmaschine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US242689A US1741328A (en) 1927-12-27 1927-12-27 Typewriting machine

Publications (1)

Publication Number Publication Date
US1741328A true US1741328A (en) 1929-12-31

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Family Applications (1)

Application Number Title Priority Date Filing Date
US242689A Expired - Lifetime US1741328A (en) 1927-12-27 1927-12-27 Typewriting machine

Country Status (4)

Country Link
US (1) US1741328A (fr)
DE (1) DE556270C (fr)
FR (1) FR666095A (fr)
GB (1) GB303060A (fr)

Also Published As

Publication number Publication date
GB303060A (en) 1930-03-11
FR666095A (fr) 1929-09-26
DE556270C (de) 1932-08-06

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