DE1957054B2 - DETACHABLE MODEL CARRIER FASTENING - Google Patents

Description

1 2

The invention includes a device for a loose fastening device that can be separated Attaching a capped drawn part,

Type head on a carrier shaft, with a longitudinal section of the device in FIG.

Cap pivoted lever handle and a raised lever handle and

with this cooperating locking member, the 5 F i g. 3 the device in cross section,

engages both in grooves of the carrier shaft, as well as A type carrier 1 is with a cap 3 by means

on the "type head rests, holes 5 and pins 7 firmly connected. The cap

When printing works in writing and the like is provided with recesses 9, 11, 13, 15, the

Machines must be easy to change to accommodate locking arms 17, 19 and Fülirungsarmen

Sum type carrier be guaranteed. This aus- io 21, 23 of a locking slide 25 are used. In the cap 3

exchangeable type carrier is of great importance when there are also recesses 27, 29 in which a

frequent transition to foreign languages with other shaft 33 firmly connected to a lever handle 31

Characters, to other fonts or after assembly is rotatable. In the cap 3

special formula symbols. In this replacement there is also a recess 35 that the

the type carrier should correspond as comfortably as possible from the shark 15 outer contours of the lever handle 31,

can be removed or inserted without For better gripping of the lever handle 31 at

An indentation 37 prevents the risk of being dropped or being swiveled out

soiling of the hands with printing ink. (Fig. 2) on the cap 3 wnd a taper 39 on the

From the Austrian patent specification 270 699 lever handle 31 is attached itself. Still are on

a type carrier with a pivoting 20 the lever handle 31 two webs 41, 43 with holes in a cap

known bar lever handle. This lever handle 45, 47 arranged, which for receiving ends

acts via cam surfaces 49,51 arranged thereon, serving a wire spring53. This wire spring

On a wire spring, which is also attached to the cap by means of a spring bent on the slide 25

is arranged and articulated to the carrier shaft 55 in a groove. The locking arms 17, 19,

tgrips. For the production of the lever handle of FIG. 25, its spring action through slots 61, 63 in the slide

These arrangements are complicated work- 25 supports are conically shaped

courses required, in particular to the cam locking edges 57, 59 on. In the type carrier 1 are

to produce surfaces. These cam surfaces are recesses 65,67 for receiving grooves

Incidentally subject to increased wear, 69, 71 provided arms 73, 75 one on one

because the free ends divr FecLr constantly in friction 30 carrier shaft 77 arranged driver 79. This

are in connection with the cam surfaces. Therefore driver 79 still contains a power transmission

these cam surfaces must consist of a hardenable member 81 which is inserted into an adapted recess 83 of the

Material are made, which engages tightly with additional type carrier 1.

Costs associated with it. The known locking In the inserted state of the type carrier 1 on

device also requires a certain amount of space 35 of the support shaft 77, the arms 71,73 protrude into

Skill from the operator, since the savings 85, 87 of the cap 3!. '. no. The effect

Swinging out the lever handle against the steady instruction is the following:

The force of the wire spring increases and therefore the type head 1 is used to remove the type head

Care must be taken to ensure that the person operating the machine puts a finger into the ci.i machine

Slipping of the thumb or a finger from the recess 37 on the circumference of the cap 3 under the

To prevent lever grip. During this slip, the tapered end 39 of the lever handle 31 and pivots

Namely, the standing under the action of the spring would this with a slight increase in the spring force of the

Lever handle back to its original position - spring 53 up to the tilt position, whereby the eye 55

Fast. The invention is based on the object of the slide 25 on an edge 89 (FIG. 2)

Clic disadvantages of the known devices to vcr- 45 cap 3 supports. If the lever handle 31 over this

Ineiden. Moved out of position, the spring 53 acts in

According to the invention, this task is performed in the opposite direction of rotation on the lever handle 31 solves that the locking member designed as a locking slide inid causes its jumping movement in a Stellst, with the lever handle via a spring, which is in the treatment according to FIG. 2. From this position, the iJereicli the closed position of the lever of both 50 lever handle 31 and thus the slide 25 with easier ficits of a tilted position are brought into the open position in the opposite turning direction, device acts on the lever, connected and against the The lever handle 31 serves on the one hand to unlock the Type head or its cap in the closing direction of type carrier 1 from carrier shaft 77 and other is supported that in the closed position on the other hand as a usual handle.

the spring is stretched by the lever handle. As a result, when a type carrier 1 is put on, it becomes easy and safe handling of the lever is rotated until its recess 83 is over handle enabled. The locking device according to the invention the power transmission gate 81 on the driver 79 ventilation device consists of simple individual parts, finds and can then be moved axially. These the low-labor and inexpensive movement is ended when the bottom plate 91 places are. To lock the lever handle in its 60 of the type carrier 1 with the cover plate 93 of the included In the position, no additional locking device 79 comes into contact. Then the links are required, as these can be effortlessly returned to the jump position by the lever handle 31 with it bound spring is held in the closed position according to Fig. 2 and then under increasing span, pivoted to the tilt position. If the lever

An embodiment of the invention is in the 65 handle 31 rotated beyond this position, so returns

Drawings shown and in the following this under the stored energy of the spring 53

wrote. It shows back to its starting position. The slide 25

Fig. 1 is a perspective view of the invention latches with its locking edges 57, 59, which in the

1 957 Ü54

Grooves 69, 71 engage, the type carrier 1 again on the carrier shaft 77.

The conical locking edges 57, 5 ¹ J and side surfaces 95, 97 of the grooves 69, 71 also ensure that the type carrier 1 sits on the carrier shaft 77 without play.

Such resilient and self-locking locking slide 25 are known in another technical field, but not for the present purpose, namely for the releasable fastening of a type carrier 1 on a carrier shaft 77.

Claims (4)

Patent claims: I. Apparatus for releasably attaching a capped type head to a Carrier shaft, with a lever handle pivotably mounted in the cap and one that interacts with this Locking member that engages both in grooves in the support shaft, as well as on the Type head rests, characterized that the locking member is designed as a locking slide (25) with the lever handle (31) over a spring (53) in the Hi-Reich the closed position of the lever grille (31) on both sides a tilted position acts on the lever (31) in the opposite direction of rotation, connected and is supported in this way against the type head (1) or its cap (3) in a closing direction. dall when the lever handle (31) is in the closed position, the spring (53) is tensioned. 2. Apparatus according to claim 1, characterized in that the locking slide (25) with resilient locking arms (17,19) forming slots (61, 63) is provided and conically shaped Has locking edges (57, 59). 3. Apparatus according to claim 1 or 2, characterized in that the grooves (69.71) of the driver (79) are conical in the sliding direction of the sliding element (25). 4. Device "? Ch claim 3, characterized in that that the grooves (69, 71) are arranged symmetrically on the drivers (79) and at least one side surface which is conically formed transversely to the slide direction of the slide (25) (95, 97). 1 sheet of drawings