DE1883033U - MODEL LEVER GEAR FOR TYPEWRITERS. - Google Patents

Description

pat £ ntamwa-lte [^ · 653 393 * 11. JO ₁ EI

PATENTANWALT MÜLLER-BÖRNER PATENTANWALT DIPL.-INS. WEV BERLIN-DAHLEM · PODBIELSKIALLEE 68 MUNICH 22 · WIDENMA "/ ERSTRASSE TELEPHONE: 762907. TELEGRAMS: PROPINDUS TELEPHONE: 2a SS Θ5 · TELEGRAMS: PROPINDUS

15th

f? is ξ 2 g

2. α

Ing.G. Olivetti & C, S.p.A. I ν r e a (Italy)

Type lever gears for typewriters

2ϊ 2. O 3 * X

3 ~! δ "κ 3 *

I s & s-j »

8 1 £ ■ § 8

g5s. δ c ^The invention relates to a type lever transmission for

f? is ξ. 2- g typewriters, each in a vertical longitudinal plane

S- «D 2 α

T'pr ^ i'i? Ώ · ^Θ pivotable button levers and assigned to them, respectively

S f? 5. 5

«· 3 3. g. S-

one to both the longitudinal planes and the transverse plane of the

i 3, = .β s, type levers pivotable in a radial plane, and one in

l 1-1 "° ·

= ■ §-§ d! Type lever axis parallel direction switchable type lever-3 3 ο α ί 2. P "ST

? S-D§ segment. The invention relates to such type lever mechanism

> §-3 · "κ · each of which has a key lever arm over a first rod, one

gSiä> ~ Ül pivotable in the radial plane of the assigned type lever

Ii Sr 1 1

g ί ρ c - intermediate lever and a second rod with the associated Ty-2 Ig? J J-

i's-n? pen lever is connected. S "3: S ^: - 2.

% ' = ο ω, «, gQ g-CL« ¹

Is-HgI It has long been strived for with type lever transmissions at g- -p ä ^. §:

i? ' I "3 J the same key stroke for all key levers, all gears-ο "■ ζ 2Γ ο,

J ^ ¹ J? divide each as in one while avoiding crookedness

S a ··! *? To be designed lying flat and to be arranged in such a way that they

TELEPHONE 018 4057

the actuation of the type lever mechanism as far as possible Are exposed to lateral forces.

With the "previously known type lever drives" either the key levers or the intermediate levers each assigned to individually Spigot, are stored or there is no segment switchover possible or the intermediate levers are in special planes or separate from the longitudinal and radial planes after all, there are additional gear parts, e.g. a second one Intermediate lever and a third rod are necessary.

The invention is based on the object of addressing these disadvantages remove.

According to the main feature of the invention, the length of the increases approximately in a plane parallel to the level of the type lever aeh.se, upwardly directed button lever arms of the middle to the outside type levers approximately in the same Ratio to like the length of the button lever arms each over the first rod, which is approximately on the cutting line the key longitudinal plane with the assigned type lever radial plane is connected intermediate lever arms, of which the Halving lines of the angles described by them in a plane parallel to the plane of the type lever axis, which coincides with the Plane of the circular intermediate lever axis coincides, and that the tie rods as well as the intermediate lever arms are equally long for each other.

The. The invention is explained in more detail with reference to the schematic drawing, for example.

Pig. 1 is a side view of a first embodiment, des Type lever mechanism of a typewriter;

2 shows a front view perpendicular to the type lever segment after Pig. 1 .

The key levers 5 are mounted in rows on three transverse axes 6, 7 and 8 seated on the frame 15 and are each pivotable in a vertical longitudinal hole. The key levers 5 are each assigned a type lever 9 pivotable in a radial plane about a semicircular type lever axis 10. As can be seen from "Pig. 2, the diameter of the semicircle of the axis 10 is, as usual, smaller than the distance between the longitudinal planes of the outer key levers 5 'and 5". The axis 10 is carried by a type lever segment 11 _: which, as usual, can be switched in the plane of the axis 1.0.

A key lever arm 18 is attached via a first pull rod 27 an arm 26 of an intermediate lever 19 pivotable in the radial plane of the type lever 9 is articulated, the second arm 21 of which is above a second pull rod 22 on an arm 23 of the type lever 9 attacks. The key lever arms 18 are approximately in a transverse plane 30 and parallel to the plane of the type lever axis 10 are directed upwards. The pull rod 27 lies approximately on the intersection line 12 of the longitudinal plane of the key lever 5 with the Radial plane of the assigned type lever 9 The intermediate lever

- 4th

arms 26 are approximately in the plane of one on the type lever segment 11 mounted, semicircular intermediate lever axis 20, which is also parallel to the plane of the type lever axis 10; the intermediate lever arms 26 are approximately radial directed outwards. The intermediate lever arms 21 are the same for all intermediate levers 19.

The length of the key lever arms 18 and the intermediate lever arms 26 changes from the middle to the outside type lever transmissions in such a way that the end of each pair of Arms 18 and 26 come to rest approximately on the cutting line 12. The intersecting lines 12, which are parallel to one another, form one general cylindrical surface 28 (Fig. 2).

Through an appropriate dimensioning of the parts and arrangement of the radial planes on the type lever segment 11, the through the Tie rods 27 imaginary surface 28 shaped in such a way that the distance in each case a cutting line 12 from the intermediate lever axis 20 increases from the middle to the outside type lever transmissions according to the same ratio as the distance the same line of intersection from the transverse axis 6, 7 or 8. Accordingly, the length of the key lever arms 18 increases according to the same Ratio, such as the length of the intermediate lever arms 26.

When a button 4 is pressed, the relevant button lever is turned 5 pivoted counterclockwise (Fig. 1), whereby the pull rod 27 pivots the intermediate lever 19 in a clockwise direction and this also pivots the type lever 9 clockwise via the pull rod 22. The key travel and the movement

set is the same for all type lever gears, so that a type lever gear is created with a total of only five parts which, despite the simplest structure, eliminates the disadvantages mentioned at the beginning and e.g. the segment switchover allows.

In order to avoid transverse forces as much as possible during the full actuation of the type lever gear, the arms 18 and 26 arranged such that the bisection line 30 and 29 of the angle described by them are parallel to each other Level of the type lever axis 10 is located. The tie rods 27 thereby all have the same length. They are also arranged in such a way that that the bisection line 31 of the one described by them Angle approximately coincides with the cutting line 12. The three transverse axes 6, 7 and 8, of which the transverse axis β carries two rows of keys in order to simplify the construction in turn arranged in this way and the ratio of the length of the horizontal ones that differ from row of keys to row of keys Key lever arms to the length of the associated key lever arms 18 is calculated so that all keys the same stroke is secured. ■

Claims (1)

■ ψ - - PATBNTANlVALTe PATENTANWALT MÜ LLER-BÖ RN ER PATENTANWALT DIPL-ING. WEV BERLIN-DAHLEM - PODBIELSKIALLEE 68 MLINCHEN 22 WIDENMAYERSTRASSE 4-9 TELEPHONE: 7629Ο7 TELEGRAMS: PROPINDUS TELEPHONE: 22 55Θ5 TELEGRAMS: PROPlNDUS Ing. Ö. Olivetti & 'C, S.p.A. I τ r e a (Italy) Protection claim Type lever gear for typewriters, each with one two-armed button levers pivotable in the vertical longitudinal plane and type levers associated therewith, each pivotable in a radial plane, and one in the plane of the type lever axis switchable type lever segment, in which type lever drive each one key lever arm via a first rod, one in the Radial plane of the assigned type lever pivotable intermediate lever and a second rod is connected to the associated type lever, characterized in that the length of approximately in a parallel to the level of the type lever axis (10) Level lying, upwardly directed button lever arms (18) from the middle to the outer type levers in the same Ratio increases as the length of the button lever arms (18) each over the first rod (27), which is approximately on the cutting line (12) of the key longitudinal plane with the assigned TELEPHONE: Ο18 4Ο67 arranged type lever radial plane, connected toe lever arms (26), of which the bisection lines of the angles they describe in one to the plane of the type lever axis (10) parallel plane which coincides with the plane of the circular intermediate lever axis (20) and that the tie rods (22, 27) as well as the intermediate lever arms (21). are equally long for each other.