DE1935683A1 - Type lever with an exchangeable type label - Google Patents

Description

PA TBN TA N WJS L TB PATENTANWALTDlPU-ING-R-MOLLER-BaRNER PATENTANWALT DIPL-ING. HANS-H. WEY BERLI N-DAHLEM 33. POD BI E LS KIALLE E 68 8 MO NCH EN 22- WIDENM AY ER STRASSE TEL. 0311 742907 TELEGR. PROPINDUS. TELEX 0184 057 TEL. 0811. 22558S. TELEGR. PROPINDUS. TELEX 0524244

Berlin »July 9, 1969

Ing. 0. Olivetti & G., S.p.A. Ivrea (Torino) / Italy

Type lever with an exchangeable type carrier

The invention relates to a type lever with an exchangeable type carrier, for typewriters or similar machines, where type levers cooperate with a roller to achieve printing. Here is the type carrier with a slot for attaching to the type lever head Mistake. Various type levers with interchangeable types are known. At one of the well-known Type lever, the type lever head has the shape of an elastic fork, so that the type is attached to the same can be locked. However, changing the type is quite difficult, as it is necessary to use the to spread both fork arms while removing the type.

Another known type lever is the Type formed by a U-shaped metal plate · The plate has pressed protrusions for locking with the Type lever head. The type takes up considerable space in terms of width, so the type plate is suitably slotted have to be.

909684/1285

The invention is based on the object of creating a type carrier that is easily replaceable and inexpensive is and is of little space.

This object is achieved according to the invention in that the The slot provided in the type carrier is open on the side facing away from the types and that in the slot Projections are provided that hold the type carrier on the type lever head in at least two directions, t which are substantially perpendicular to each other.

After the type carrier has been attached to the type lever head, the aforementioned projections or also notches act of the type carrier with correspondingly shaped surfaces of the type lever head together to a movement of the type carrier to prevent in at least two substantially mutually perpendicular directions.

An embodiment of the invention is shown in the drawing and is described in more detail below. Show it!

Fig. 1 is a longitudinal section through the middle of a type

lever with exchangeable type carrier according to the 'invention,

FIG. 2 shows a section along the line H-II in FIG. 1 and

Fig. 5 is a perspective view of a type lever in an exploded view.

In Fig. 1, the reference numeral 5 denotes the end piece of its own typewriter type lever, which the usual approach 6 to act on the type, not shown.

909884/1285. ^r

lever guide owns. The type lever '5 has a head 7, on which an absolutely designated 8 type carrier is attached. The type carrier 8 carries on a substantially flat front surface 9 two types 10 and 11.

In the type carrier 8, a slot 12 (Fig. 2) is arranged, which is open on the side facing away from the types and a plugging of the type carrier 8 on the head 7 of the type lever 5 is allowed, the slot from two lateral Web 13 and 14 is limited, which is very thin between 0.4 and 0.8 mm.

At its upper end, the type carrier 8 has an elastic tongue 15 (FIG. 1), which is supported by the webs 15 and 14. is separated by a slot 16 and with a shaped edge 17 of the head 7 of the type lever 5 and an upper one Edge 27 of one of the webs 13 and 14 (Fig. 3) cooperate can.

The type lever 5 has a first shoulder 18, which as Support for a lower edge 19 of the type carrier 18 is used to define the type carrier in a direction that extends parallel to the front surface 9 and thus also parallel to the writing surface \ of types 10 and 11. By doing Slit projections are provided that the type carrier 8 on the head 7 in at least two different, im hold directions that are essentially perpendicular to each other. In particular, a resilient tongue 20 extends from the Bottom of the slot 12 perpendicular to the surface 9 · The tongue 20 can with another shoulder 21 of the type lever 5 cooperate in such a way that the type carrier 8 in a direction parallel to the surface 9 is being held.

909884/1285

The head 7 of the type lever 5 also has two Edges 22 perpendicular to shoulders 18 and 21, these two edges being bevelled at 45 °. The type carrier 8 in turn has two wedge-shaped projections 23 in its slot 12, which protrude from each of the webs 13 and 14 protrude. Each projection 23 has one at 45 beveled surface 24 and is for cooperation with one of the beveled edges 22 of the head 7 of the type lever 5 are also suitable in the slot 12 are two upper projections 25 and two lower front ^ jumps 26 arranged, which the head 7 of the type lever 5 encircle and elastic against the side surface of the head if the type carrier bends

The type carrier 8 is in one piece and consists of high-strength plastic material, such as, for example, the polyacetal produced by the German company Hoechst under the trademark "Hostaforn". The type carrier 8 made from this material is metallized by means of a first chemically applied copper coating, a subsequent electrolytically applied copper coating, an electrolytically applied deposit w of nickel and finally an electrolytically applied chromium coating, which gives the outer surface the hardness necessary for a clear typeface and a long service life .

To remove the type carrier 8 from the head 7, is the tongue 15 pressed with the finger so that it is mainly acts on the edge 17. If the application of pressure is maintained, the tongue 15 presses on the edges 27 the webs 13 and 14, whereby the type carrier after auseen forced and the tongue 20 is released from the shoulder 21

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935683

If the type carrier 8 is to be fastened again on the head 7, the type carrier 8 is pressed in with two fingers, which act simultaneously on the tongue 15 and the surface 9 until the tongue 20
snaps under the shoulder 21 and the projections 23 encompass the beveled edges 22.

Patent claims:

909884M28S

Claims (1)

P a tent a η proverbs Type lever with an exchangeable type carrier for Typewriters or similar machines where the type carrier with a slot to attach to the type leverp "Head is provided, characterized in that the Slot (12) is open on the side facing away from the types and that projections (20, 23) are provided in the slot are, which hold the type carrier (8) on the head (7) in at least two directions, which essentially are perpendicular to each other. 2 type lever according to claim 1, characterized in that that the type carrier (8) from one piece of a relative flexible plastic material, which is coated with a relatively thin layer of hard metal is. 5 type lever according to claim 1 or 2, characterized in that that the slot is formed between two webs (13, 14), each of which has a free edge at the top (27) possesses, and that the type carrier carries an elastic tongue (15) at its upper end, which by hand actuated can interact with the free edges of the webs to prevent the type carrier from the jumps (20, 23-) to solve. Type lever according to one of claims 1 to 3, with a first shoulder (18), which the type carrier in one of the Writing surface of the types parallel direction serves as a support, characterized in that one of the projections 900084/1285 consists of an elastic tongue (20) which is perpendicular to the writing surface, in which the slot is arranged, while a second shoulder (21) of the type lever as a support for the tongue on the opposite shoulder of the first Page serves 5. Type lever according to claim 4 ·, characterized in that the type lever head contains two beveled edges (22) arranged perpendicular to the shoulders (18, 21) and that two of the projections are formed by two wedges (23) each containing a surface (24) which are suitable for holding the type carrier in a direction perpendicular to the writing surface. 6. Type lever according to claim 5 »characterized in that two further projections (25) of the type carrier are provided, which are stressed by bending against the lateral surfaces of the type lever head (7) Gr / FÜ - 22 015/16 909884/1285 S Blank page