US1736125A - Typewriting machine - Google Patents

Typewriting machine Download PDF

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Publication number
US1736125A
US1736125A US227997A US22799727A US1736125A US 1736125 A US1736125 A US 1736125A US 227997 A US227997 A US 227997A US 22799727 A US22799727 A US 22799727A US 1736125 A US1736125 A US 1736125A
Authority
US
United States
Prior art keywords
type
type bar
lever
arm
detent
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
US227997A
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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 US227997A priority Critical patent/US1736125A/en
Priority to GB29025/28A priority patent/GB299305A/en
Priority to FR661966D priority patent/FR661966A/fr
Priority to DER76022D priority patent/DE551515C/de
Application granted granted Critical
Publication of US1736125A publication Critical patent/US1736125A/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

  • the sliding type bars are actuated by a toggle mechanism which reaches a straight linel position at the time of printing so that the actual printing is performed 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 imprint may be varied as may be desired for manifolding.
  • One of each pair of keys merely gives the type bar its sliding movement, while the other key not only gives the type bar the same sliding movement, but gives a slight lifting movement to a guide member which supports the type bar in its travel to the printing point, thereby lifting the bar into position so that another type of the group is brought to the printing point.
  • the type bar is given its slidingl andi lifting movements Aat substantially the same time but the lifting movement is completed before the type bar reaches the ⁇ printing point and the connections between the second key lever and the guide which lifts the type bar are such that the key lever may be moved a slight further distance after the guide has reached the full extent of its move-Y ment.
  • the invention also comprises power operated mechanism for actuating the type bars by which either or both of the above-described movements are given to the operated type bar.
  • Figure 42 is a similar. view showing the parts in operated position when the type bar is actuated to print from the lowermost' type of a group.
  • Figures 3 and 4 are side elevations of a portion of the power driven mechanism showing different stages in the operation thereof.
  • Figure 5 is a side elevation of a modificaion.
  • Figure 6 is a top plan view of a portionl of i the structure shown in Figure 5.
  • rllhe invention may be embodied in typewriting machines of widely dierent character in other respects, and for this reason the other instrumentalities of the typewriting machine have not been illustrated.
  • a platen A which is movable to a second position indicated in dotted lines by any usual or desired form of case shift mechamsm.
  • Each type bar 1 is mounted to slide and is preferably made in skeleton form for the sake of lightness and is provided with four types w, b, o, and d.
  • operation of t e type bar will print from one of the type c or d.
  • lf the type bar is given merely its longitudinal movement, the printin impress wlll be from the type c as indicate in Figure 1 while if the t pe bar is simultaneously lifted by the epression of the other keyl which o crates the same, the imprint will be fromt e type d as shown in Figure 2,. lf it is desired to print from types a or Z), the platen is shifted to the dotted line position and the two key levers control the selections of the types a or in similar manner.
  • Each type bar l slides 'on a supporting and guiding member 2 which is pivoted at 3 to a xed part of the machine and has u standing ears d which bear against one si e of a type bar and guide it. in its movement.
  • Riveted or otherwise fastened 'to the member 2 at 5 is a plate 6 which extends 'upwardly and has bent over ears en aging the upper edge of thel type bar.
  • T e projections t, plate 6, and ears 'i' engage the type bar at lOU different points along its length and serve to 'guide the same accurately to the printing oint.
  • a link 9 which is illustrated asl being formed with two parallel members connectedby web portions 10. ⁇ This is'pimarily for convenience in manufacture and to add.v stability to the parts and is preferable since one 'of the guide members passes on each side of the type bar and serves to guide the rear end thereof in its movement. It is possible, however, to omit the web portions 10 and employ two separate parallel links,or a single link member may be used.
  • a short link 12 Pivoted at 11 to the link 10 is a short link 12 which, together with the link 10, forms a toggle member.
  • This link 12 is pivoted at its other end to a supporting member 14 mounted in the frame of the machine.
  • An extension 15 from the. member 14 passes through a bar 16 carried by the machine i frame and a screw 17 threaded into the bar 16 has a head 18 engaging the cut-out 19 in the member 15 so that the position of the member 15 may be adjusted by turning the screw 17.
  • a set screw 20 may be employed to lock the member 15 in adjusted position.
  • this member 14 will adjust the position of thelink 12 which iorms one member of the toggle and will, therefore, vary lthe edective printing position of the type bar( l l Pivoted at 21 to an ear on the link 12 is a link 22 which is pivoted at its other end at 23 to a lever including a pair or arms24, one arm ott' which passes on each side of the member 15.
  • This lever is pivoted to the member 14 at 25 and one of -the arms is extended downwardly as indicated at 26.
  • a spring 27 vconnected at one end to the member 14 and at its other end to an ear 28 carried by themember 26 tends to hold the parts thus far de scribed in the Figure 1 position.
  • the lower end ot the extension 26 is piv@ oted at 29 'to a link 36 havingian arm connected by a spring 61 to an ear on the enten-e sion 26. lhe lower end of the link 36 is pivoted at 32 to a rock arm or member 35 loosely mounted on a shaft 33 which is kept in con: etant rotation 'by yany suite-.ble source o'r ratchet wheel 34 is least on said.
  • a detent mem ber is nivoted at 36 to the rock arm or member 35 and has a tooth 39 adapted to he brought into engagement with the ratchet wheel 34.
  • fr ilorlred erm 37 loosely mounted on the shaft 33 and adjustable in its position'a has a guard 38' which overlies the ratchet wheel ttor a purpose hereinafter set forth.
  • ley levers 40 and 41 are pivoted on a suitable anis and are adapted to connect the action proper to the power driving mechanism in the '.i'ollovving manner.
  • the key lever 40 is connected by a link 42 to a lever 48 pivoted on an axis 46 and having a bent over ear 44 which overlies an arm 45 also pivoted on the axis 46.
  • the key lever 41 is connected by a link 50 with a short lever 51 pivoted on the axis 46 and lying on the other side of thel lever 45 and has an ear 52 overlying the same.r
  • the arm 45 has an extension 48 to which is' 51 has an upward project on 53 'for la purpose hereinafter set forth and the lever 45 has a broadened end 54 adapted when the parts are in normal position to lie in front of an ear 55 on the upper end of the rock arm or member Z55/'and alsofto. overlie a portion '56 of the detent or pawl member pivoted at 36.
  • the arm 53 is connected by a link 57 toa latch/member 58 having a slot 59 adapted to engage a pin 60 carried by the ear 28 on the lever extension 26.
  • This latch member ⁇ is connected by a lost motion pin and kslot connection 61 with the rear end of the lifting and guiding member 2.
  • a spring 62 connected to 'the latch 58and to the member 2 tends toretain the parts in the Figure 1 position.
  • a spring' 63 connected at one end to the member, 2, and at its other end to a frame member 49 'tends to hold the member 2 in the Figure 1 position in which a stop member 65 contacts with the frame member 64.
  • a stop 6fo carried by the member 2 engages the under side ci a porn tion ci they trame member 64 to limit the lifting movement oi the type bar.
  • the spring 31 will thereupon return the type ction and all connected parts substantially to the l-Tigure l position regardless or whether the pressure on the hey lever is released or not. If the key lever is'held down, ⁇ the arm 45 will be held in depressed position and the .-.detent member will contact with the arm as v shown in the dotted line position of Figure 2. The broad end 54 of the arm 45 will prevent this detent member from movingabove the arm 45 and as soon as the key lever is allowed to return to its normal position, the parts will then reach the Figure 1 position, the ear 55 of the member 35 contacting with the broad end 54 of the lever 45 and preventing overthrow of the parts.
  • the member 37 which carries Athe guard 38 can be adjusted in its normal position by means of' a slot 67 in said member engaging a pin 69 carried by a rotatable part 68 but eccentric thereof. As, shown in Figure 4, the rotation of the member 68 will vary the normal position of the part 37 and guard 38 and, therefore, vary the point at which the detent wil be thrown out of engagement with the ratchet wheel 34.
  • the lever 43 is omitted and the link 42 is connected directly to the arm 45, which is provided with a returning spring 70.
  • the key le'ver 41 is connected by the link 50 to the lever 51 exactly as in the first form, but in this case the lever 51 is provided with a separate returning spring 7l.
  • Thekey lever 40 is also provided with an individual returning spring 7 2. Carried by an ear 73 on the lever 51 is an eccentric 74 which overlies the.
  • the supportin and uiding member ⁇ 2 is normally incline slight y below the horizonprinting position, it moves to 'an equal distance above the horizontal. This results in the same action in both positions of the type bar.
  • the provision of separate adjusting means for each type bar allows the printing position thereof to be varied individually.
  • a type action comprising alslidable 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 type lin each group, a movable support for the type bar, ower operated means controlled by the epression of eachkey lever for sliding the type bar to the printing position including a lever, a latch carried by the movable support, and means operated by the depression of one key lever for connecting' the-latch to the power operated lever.
  • 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 type'in each group, a pivoted support for the type bar, power operated means con-y trolled by the de ression of each key lever for sliding t e type ar to the printing position, means operated by the depression of one key lever for connecting the pivoted support to the power operated means, and means permitting the power operated means for sliding the tpe bar to operateafter the pivoted support as reached the limit of its movement.
  • 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 type in each group, a pivoted supportfor the type bar, power operated means controlled by the depression of each key lever for sliding the type bar to the printing position, a latch carried by the ivotedsupport, means for moving said latcli into operative engagement with the power operated means, and means for operating said moving means by the ldepression of one of the key levers.
  • a type action comprising a slidable type bar provided with a plurality of groups of moving means by the depression ofone of the key levers, Ythe loose' engagement of the latch permitting the means for sliding the type bar to operate after the pivoted .support has reached the limit of its movement.
  • Power driving means for type bar actions comprising a constantly rotating shaft,l
  • a ratchet wheel thereon, an arm loosely mounted on said shaft, a detent pivoted on said arm, means for moving said detent into engagement with the ratchet wheel so that the arm will rotate with the shaft, means whereby the movement of the arm will actuate,the type bar action, means including a plurality of key levers for independently operating the said detent moving means, means supporting the type bar for movement in another direction, and-means operated by one of said key levers for connecting the supporting means to the power driving means.
  • yPower driving means for type bar actions comprising a constantly rotating shaft, a ratchet wheel thereon, an arm loosely mounted on said shaft, a detent on said arm, key'operated means for moving said detent into engagement with the ratchet so that the arm will rotate with the shaft, means whereby the movement of the arm will actuate the type bar action,'a guard for the ratchet wheel loosely mounted on the shaft for cooperation with the detent to disengage the latter from the ratchet wheel, and means for circumerefntially adjusting the guard about the sha t.
  • Power driving means for type bar actions comprising a constantly rotating shaft, a ratchet wheel thereon, an arm loosely mounted on said shaft, a detent on said arm', key operated means for moving said detent into engagement with the ratchet so that the arm will rotate with the shaft, means whereby the movement of the arm will actuate the type bar action, a guard for the ratchet wheel loosely mounted on the shaft for cooperation with the detent to disengage the latter from the ratchet wheel, said guard being provided with a slotted arm, and means including an adjustable eccentric engageable with the slotted arm of the guard to circumferentially adjust the latter about the shaft.
  • a type action comprising a slidable type bar provided with two groups of type, two key levers associated with the type bar, a vertically movable support for the type bar,
  • a power mechanism for the Atype action including a constantly rotating shaft, a member loosely mounted on the shaft, a detent pivotally mounted on the member for engagement with the ratchet wheel, connections between the member and the type bar for moving the latter along the support upon engagement of the detent with the ratchet Wheel, an arm pivoted on a fixed axis for moving the detent into engagement with the ratchet wheel, a pair of levers independently engageable with the pivoted arm, separate connections between the levers and the key levers whereby upon depression of either key lever the arm will be Vmoved to engage the' detent with the ratchet wheel, and means connected with one of the pivoted levers for moving the typebar support vertically upon depression of one key lever only.
  • a type action comprising a slidable type bar provided with two groups of type, two key levers associated with the type bar, a vertically movable support for the type bar, a power mechanism for the type action including a constantly rotating shaft, a member loosely mounted on the shaft, a detent pivotally mounted on the member for engagement with the ratchet ⁇ wheel, connections between the member and the type bar for moving the latter along the support upon engagement of the detent with the ratchet wheel, an arm pivoted on a fixed axis for moving the detent into engagement with the ratchet wheel, a pair of levers independently engageable with the pivoted arm and ulcrumed on the same axis, a spring for normally holding said pivoted arm out of engagement with the detent and in engagement with :the levers, separate connections between the levers and the key levers whereby upon depression of either key lever the arm will be moved to engage the detent with the ratchet wheel, and means connected with one of the pivoted levers for moving the type bar support vertically upon
  • Power driving means for type bar actions comprising a constantly rotating shaft, a ratchet wheel ixed thereon, an arm loosely mounted on said shaft, a detent pivoted on said arm and movable to either of two extreme positions, a stop to limit the movement of the detent in its inoperative position, a coil spring connected at its ends to the arm and to the detent respectively whereby the spring will :function to yieldably retain the detent in either extreme position, said detent being normally held in its inoperative position by said spring, key operated means for moving said detent into engagement with the ratchet t so that the arm will rotate with the shaft, and a stationary guard for the ratchet wheel which is enfgaged by the detent to throw the engagement with the wheel ajfter a predetermined movement thereof.
  • a type action comprising a slidable type bar rovided with a plurality of groups A 'sliding the type bar to the printing position, A and means operated by the depression of one key lever for connecting the movable sup port to the power operated means to be operated thereby.
  • a type action comprising av 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 type in each group, a movable support for the type bar, power operated means controlled by the depression of each key lever for slidingthe type bar to the printing position including a lever, and means operated by the depression of one key lever for connecting the movable support to the power operated lever.
  • a type vaction comprising a. slidable type bar rovided with a plurality of groups of type, ey levers associated with the type bar and corresponding in number to the number of type in each group, a pivoted support for the type bar, power operated means controlled bv the depression of each key lever for sliding the type bar tothe printing position,
  • a type action comprising a type bar mounted for sliding and tilting movement, means forv giving the type bar its sliding movement comprising a' lever, ower operating means, a plurality of keys or connecting I sald power operating means to said lever,

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US227997A 1927-10-22 1927-10-22 Typewriting machine Expired - Lifetime US1736125A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
US227997A US1736125A (en) 1927-10-22 1927-10-22 Typewriting machine
GB29025/28A GB299305A (en) 1927-10-22 1928-10-09 Improvements in actions for typewriting machines
FR661966D FR661966A (fr) 1927-10-22 1928-10-10 Perfectionnements aux machines à écrire
DER76022D DE551515C (de) 1927-10-22 1928-10-23 Kraftantriebsvorrichtung fuer Typenstangenschreibmaschinen

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US227997A US1736125A (en) 1927-10-22 1927-10-22 Typewriting machine

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US1736125A true US1736125A (en) 1929-11-19

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Application Number Title Priority Date Filing Date
US227997A Expired - Lifetime US1736125A (en) 1927-10-22 1927-10-22 Typewriting machine

Country Status (4)

Country Link
US (1) US1736125A (fr)
DE (1) DE551515C (fr)
FR (1) FR661966A (fr)
GB (1) GB299305A (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4613247A (en) * 1982-07-26 1986-09-23 Fwm Enterprises, Inc. Multiple format keyboard

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4613247A (en) * 1982-07-26 1986-09-23 Fwm Enterprises, Inc. Multiple format keyboard

Also Published As

Publication number Publication date
DE551515C (de) 1932-06-02
FR661966A (fr) 1929-08-01
GB299305A (en) 1929-09-26

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