Printing – Printing members and inkers – Pad inker
Patent
1999-05-25
2000-05-30
Hilten, John S.
Printing
Printing members and inkers
Pad inker
101104, 101405, B41K 142
Patent
active
060679050
DESCRIPTION:
BRIEF SUMMARY
FIELD OF THE INVENTION
The invention relates to a hand stamp including a self-inking device and comprising an inverting mechanism for a character unit, the inverting mechanism being arranged in a housing and including an inverting axle, which inverting axle, starting from the character unit, extends through slots in the housing and is mounted with its ends in legs of an actuating bow guided on the housing, the ends of the inverting axle being secured against axial displacement by aid of safety elements.
DESCRIPTION OF RELATED ART
In known hand stamps of this type, the ends of the inverting axle of the inverting mechanism are mounted either in blind bores or in bores of the actuating bow, cf., e.g., AT 384 999 B (=U.S. Pat. No. 4,823,696 A), U.S. Pat. No. 3 783 786 A or U.S. Pat. No. 4,432,281 A, wherein commonly safety elements, such as Seeger circlip rings, rivets etc. are used for axially securing the inverting axle. Mounting and dismounting, respectively, of these safety elements is, however, comparatively time-consuming. Since in case of mounting the inverting axle in blind bores, the legs of the actuating bow may bend and thus the inverting axle may "snap out" of the blind bores, also there such safety elements, as mentioned, are utilized.
SUMMARY OF THE INVENTION
The invention has as an object to provide a hand stamp of the initially defined kind whose inverting axle can be mounted and dismounted in a quick and simple manner by simple means, and the stable mounting of which, both in radial and in axial direction, is to be ensured also if handled improperly.
According to the invention, this object is achieved in that at at least one leg of the actuating bow, a shaped body provided as safety element is capable of being snapped into a recess of the leg, and that the inverting axle is supported partly in the leg and partly on the shaped body and thus is secured against axial displacement. By this design, the above-mentioned object can well be met. The shaped body serving as safety element can be produced at low cost from synthetic material, and during mounting of the inverting axle, after insertion of the latter it can simply be pushed in and fixed by snapping in, i.e. both manually and also by means of a machine.
According to a preferred embodiment of the invention it is provided that the inverting axle at each of its ends includes a peripheral groove and in the portion of the peripheral groove is radially and axially held in a lower bearing shell which is formed in the region of the recess of the leg of the actuating bow, whereas a portion of the inverting axle adjacent the peripheral groove radially abuts on a projection of the shaped body. In the assembled state, thus the stable position of the inverting axle is ensured both in radial and also in axial direction by mutual locking of the shaped body, the leg of the actuating bow and the inverting axle, in a particularly simple and efficient manner so that the inverting axle then cannot be inadventently displaced, neither axially nor laterally. For supporting the inverting axle upwardly over a surface area it is suitable if the projection of the shaped body forms an upper bearing shell for radial journaling of the inverting axle. It may also advantageously be provided that the projection of the shaped body forming the upper bearing shell is designed to be finger-shaped. In this instance, the fingershaped projection acts like a locking bar for the inverting axle. Furthermore, the finger-shaped projection preferably is guided in the slot of the housing. By this, an additional longitudinal guide is formed for the actuating bow, and simultaneously also the radial contact area for the inverting axle toward the upper side is enlarged.
It is also advantageous if at least a portion of the axle located adjacent the peripheral groove is radially journaled in a bearing shell additionally formed in the leg of the actuating bow. In this manner, an additional radial contact area for the inverting axle towards the bottom side is achieved.
A preferred embodimen
REFERENCES:
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patent: 3783786 (1974-01-01), Ellison et al.
patent: 4149459 (1979-04-01), Flynn et al.
patent: 4432281 (1984-02-01), Wall et al.
patent: 4823696 (1989-04-01), Skopek
patent: 5152223 (1992-10-01), Mairon
patent: 5623875 (1997-04-01), Perets
patent: 5671668 (1997-09-01), Shih
Colop Stempelerzeugung Skopek GmbH & Co. KG
Grohusky Leslie J.
Hilten John S.
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