US2008384A - Type bar actuating means - Google Patents

Type bar actuating means Download PDF

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Publication number
US2008384A
US2008384A US702356A US70235633A US2008384A US 2008384 A US2008384 A US 2008384A US 702356 A US702356 A US 702356A US 70235633 A US70235633 A US 70235633A US 2008384 A US2008384 A US 2008384A
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US
United States
Prior art keywords
bars
type
bar
rocker
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
US702356A
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English (en)
Inventor
Benzing Hugo
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.)
AG Vorm Seidel & Naumann
Seidel & Naumann AG
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Seidel & Naumann AG
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 Seidel & Naumann AG filed Critical Seidel & Naumann AG
Application granted granted Critical
Publication of US2008384A publication Critical patent/US2008384A/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
    • B41J7/00—Type-selecting or type-actuating mechanisms
    • B41J7/02—Type-lever actuating mechanisms

Definitions

  • This invention relates to a type-bar actuating by way of example in the accompanying drawings, means for typewriters, calculating machines and in which the like, in which the movement of all key bars Fig. 1 is a longitudinal section through a typerocking about a common. axis is transmitted to .Writer furnished with type-bar actuating means.
  • FIG. 2 is a plan view showing the arrangement 5 medium of rocker bars and connecting rods.
  • Fig. 5 is a p r elevetiohel View Of type- 10 only are the type bars operatedwith an increasr Segment with three difi yp -ba drives, ing speed, but also attention is paid to the fact and that all keys, irrespective of the row in which 6 isa raphi s n ati n f t typ they happen to be situated, are movable to the bit! drive. same extent and may be struck with equal force.
  • Figure 7 is a modified form of a rocker 15
  • the typewriter possesses in the usual ve the rocker bars operated by the key bars are so tional arrangement the frame 50, in which there embodied in respect of the entire machine that is mounted the y bar Segment 5 e t rfirmly despite the different lengths of the key bars the or adjustable upwar and d wnwa s.
  • Th ype. '0 rear ends of the rocker bars of all type bar actubars move in the usual fashion about an axis ating means possess the same extent, of move- 53, and rest in the stationary position'with the ment, the same acceleration and the same force heads 54 011 a D moving the yp s of movement.
  • the essence of the invention ac- 52 there are employed the y s O th cordingly consists in the fact that the rocker there are usually ded u rows, whih in bars belonging to each row of key bars are pivoted the raw n s are ated C and All 25 t th key bars in such fashion with the end key bars 56 move about a shaft 58 mounted indirected towards the keys that the points of enthe Comb 57, d are acted upon by sprin gagement of th r k ba t t h t key which tend to maintain the key bars 56 in the liftbars are disposed at a greater distance from the ed position-
  • the y ar 6 are uided in a comb 3 axis of movement of the key bars than those in 69, and rest in the Stationary position against respect of th long key b h i t curved the elastic fitting6l of a transverse bar 62.
  • the rod 12 and the intermediate lever 13 is se- A form of embodiment of the'type-bar actuatlected in such fashion that the pivot point situll ing means accordingtothe invention is illustrated ated between the point of engagement of the arm 63 with the rocker bar 64. and the point of engagement with the intermediate lever 13 is located above a straight line connecting these two points of engagement.
  • the type bar 52 may be moved manually or also mechanically by the intermediate lever 13 without movement on the part of the key bars.
  • a fork 18 possessing an extension bar 19 extending towards the rear end of the machine.
  • a hook 80 which is engaged by a spring 8
  • the hooked rod 82 is suspended with its free end in apertures 93 in a bar 84, which rests on rocking levers 85 and may be adjusted by means of the adjustment screw 86 for the purpose of regulating the tension of the springs 8
  • the extension bar 19 possesses an eye 81, with which the same is guided on the hooked rod 82.
  • the extension bar 19 possesses a transverse arm or operating member 68, which is reinforced by being bent over at the upper end.
  • This reinforced operating member v 88 may engage with the universal bar 89, shown in dotted lines, for the shift mechaniiisn 96 and the remaining universally driven par
  • which is likewise able to rock about the shaft I4.
  • is bent in hook-shaped fashion, and possesses a projection 92, by means of which it is able to rest against a depending arm 93 of the intermediate lever 13.
  • a spring 94 which draws the lever 9
  • is furnished with a projection 95, which may be engaged by the mechanical drive, assuming that this should be provided.
  • Figs. 1-3 The operation of the type bar actuating mechanism is illustrated in Figs. 1-3.
  • the rocker bar 64 Upon depression of a key bar 56 the rocker bar 64 is first rocked about the projection 61, and the arm 63 of the key bar engages with the long lever am, so that the end H of the short lever arm lifts the type bar 52, through the medium of rod 12, lever 13, the rod 15 and the short lever arm, with considerable force but with slow movement from the pad 55.
  • the point 96 of the rocker bar 64 meets against the member 65, so that the point of oscillation of the rocker bar is displaced to the point 96.
  • the two arms of the rocker bar are of approximately equal length.
  • the ratio in the length of the lever arms continues to vary, upon additional depression of the key bar, in the manner just described, so that with approximately uniform rate of movement of the key the type bar 52 is accelerated more and more up to the time it strikes the platen, until it reaches the position according to Fig. 3.
  • is tensioned, and the universal bar actuated by the extension bar 19.
  • returns the lever 13, and accordingly the type bar 52 and the rocker bar 64, into its original position;
  • the key bar remains in this connection the intermediate lever 13 performs the same movement as when the type bar 52 is moved by the key bar 56, it will be obvious that mechanical drive of the type bars' may be efiected by operation of the type bars by the actuating roller through the medium of corresponding intermediate members of the usual kind without any resulting reaction of the key bars.
  • the key bars 56 may accordingly be employed for initiating mechanical operation of the type bars in any of the known ways.
  • the rocker bars 64 are made of diflferent length, viz., in such fashion that the rocker bars pertaining to the short key bars A are made longer than the rocker bars 64 pertaining to the longer key bars 13, C or D. Beyond this the rocker curve 69 of the levers 64 is furnished with a different radius, so that with the same extent of movement of all keys the ends II of all rocker bars perform the same stroke.
  • the type bars do not perform equal strokes, but that the movement thereof increases the greater the distance of the particular type bar from the center of the machine.
  • the length of the.arms I6 is made to increase merely to such extent towards the sides of the machine that pertaining to greater rocking angles of the type bars levers there are corresponding rocking chords of the type bar arms.
  • a further condition for the increase of the lever arms 13, I6 consists in the fact that all of the pull rods 15 connecting the same are disposed vertically to the type bar segment in the stationary position or operative position of the type.
  • Figs. 5 and 6 there are shown three different type bar drives, viz., one for a middle type bar 52, one for a type bar situated in the outer third of the segment, and one for the type bar situated in the extreme outside position.
  • Fig. 5 shows in plan view of the type bar segment 5
  • the true lengths of the levers are shown in Fig. 6.
  • This figure is to be assumed as having been derived by passing on each occasion through the fulcrum of the arm 16 and'the pull rod -15 a vertical plane on to which the single members are projected.
  • the segment in the shifted position is indicated-in broken lines. a It will be quite apparent from Fig.
  • the pull rod 15 is situated vertically to the direction of movement of the segment.
  • a type bar actuating means for typewriters, calculating machines and the like comprising key bars arranged in rows and rocking about a common axis, and rocker bars and connecting rods transmitting the motion from the said key bars to the type bars, the rocker bars pertaining to each particular row of key bars being so pivoted to the said key bars with the end directed towards the keys that the points of engagement of the said rocker bars with the shorter key bars are situated at a greater distance from the said common axis thanthose of the longer key bars, said rocker bars each having a curved rolling edge, a fixed bar having a surface over which the rocker bars are-adapted to roll and the curved edges of the said rocker bars being so formed that the rear ends of the said rocker bars, situated in a. line, perform an equal degreeof movement and receive equal acceleration, and equal force, substantially as described.
  • a type bar actuating means for typewriters, calculating machines and the like comprising key bars arranged in rows and rocking about a common axis, and rocker bars, connecting rods and intermediate levers transmitting the motion from the said key bars to the type bars, the point of engagement of the said connecting rods with the said rocker bars being situated above the line connecting their point of connection with the said intermediate levers and the point of connection of the said key bars with the said rocker bars, so that one end of the rocker bars may be elevated when the .type bars are moved without causing movement of the key bars.
  • a type bar actuating means for typewriters, calculating machines and the like comprising key bars arrangedin rows and rocking about a common axis, and rocker bars having a curved edge operating upon a fixed surface, connecting rods and intermediate levers transmitting the motion from the said key bars to the type bars, the said intermediate levers being mounted independently of the said "key bars and performing the same angular movement over the whole width of the machine and acting with increasing length of lever on the type bars, and the said type bars moving to difierent angular extents and their operating lever lengths increasing in similar fashion but not in a line, so that merely the chord of oscillation of all type bar arms is adapted to the varying extent of movement on the part of the said type bars, the curved edges of the rocker bars being such that the uniform movement of the key bars will be transmitted by increased speed to the type bars.
  • a type bar actuating means for typewriters, calculating machines and the like comprising key bars arranged in rows and rocking about a common axis, and rocker bars, connecting rods and intermediatelevers transmitting themotion from the said key bars to the type bars, a 'fixed surface upon which said rocker bars are adapted to roll whereby points of contact between said rocker bars and the fixed surface are constantly moving from a point adjacent one end of the rocker bars towards the other end of said bars, a line passing through the axis of oscillation of the said intermediate levers parallel to the path of movement of the type bar segment bisecting the angle of oscillation of the said intermediate levers.

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  • Transmission Devices (AREA)
US702356A 1932-12-28 1933-12-14 Type bar actuating means Expired - Lifetime US2008384A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE417703X 1932-12-28

Publications (1)

Publication Number Publication Date
US2008384A true US2008384A (en) 1935-07-16

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ID=6448747

Family Applications (1)

Application Number Title Priority Date Filing Date
US702356A Expired - Lifetime US2008384A (en) 1932-12-28 1933-12-14 Type bar actuating means

Country Status (4)

Country Link
US (1) US2008384A (enrdf_load_stackoverflow)
BE (1) BE400244A (enrdf_load_stackoverflow)
FR (1) FR766637A (enrdf_load_stackoverflow)
GB (1) GB417703A (enrdf_load_stackoverflow)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2563722A (en) * 1949-06-13 1951-08-07 Royal Typewriter Co Inc Power-driven mechanism for operating escapement and other instrumentalities of typewriters or like machines
US2843244A (en) * 1955-12-05 1958-07-15 Neumann Erich Type lever motion devices for typewriters and similar machines
US2857033A (en) * 1955-02-26 1958-10-21 Olympia Werke Ag Type bar actuating mechanism for typewriters
US3317018A (en) * 1965-10-22 1967-05-02 Royal Typewriter Co Inc Manual type action with rolling point contact

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2563722A (en) * 1949-06-13 1951-08-07 Royal Typewriter Co Inc Power-driven mechanism for operating escapement and other instrumentalities of typewriters or like machines
US2857033A (en) * 1955-02-26 1958-10-21 Olympia Werke Ag Type bar actuating mechanism for typewriters
US2843244A (en) * 1955-12-05 1958-07-15 Neumann Erich Type lever motion devices for typewriters and similar machines
US3317018A (en) * 1965-10-22 1967-05-02 Royal Typewriter Co Inc Manual type action with rolling point contact

Also Published As

Publication number Publication date
BE400244A (enrdf_load_stackoverflow)
FR766637A (fr) 1934-07-02
GB417703A (en) 1934-10-10

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