Printing – Printing members and inkers – Pad inker
Patent
1990-05-10
1991-10-22
Burr, Edgar S.
Printing
Printing members and inkers
Pad inker
101104, B41K 142
Patent
active
050585010
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
1. Field of the Invention
The invention relates to a self-inking tumble type hand stamp with a reversing mechanism for the print characters arranged in a housing, and with a metallic actuator for the reversing mechanism. The actuator yoke is slidably mounted on the housing, overlapping the latter, and is depressible against the force of a return spring in order to effect printing of the print characters, for which purpose the actuator yoke is provided with a hollow handle receiving and supporting one end of the return spring, whereas the other end of the pull-back spring is supported by a crosspiece of the housing and is surrounded by a sleeve arranged on said crosspiece. The sleeve is pushed into the cavity of the handle when the actuator yoke is depressed and has at least one recess into which a sliding catch arranged in a guide and linked to the actuator yoke can be pushed in order to lock the actuator yoke in a defined position of its path of travel.
2. Description of the Prior Art
In known self-inking hand stamps of the above type, the handle is fastened on the actuator yoke by means of a metal sleeve, which in turn is riveted into the opening on the actuator yoke for the passage of the return spring. The handle is then pushed over said sleeve, whereby the latter is inserted in the cavity of the handle, and the handle is fixed on said sleeve in a suitable way, for example by fit, glueing or the like. In said known self-inking hand stamps, the sliding catch is supported in a guide, for which provision is made in the actuator yoke at the point of passage of the return spring, or in the sleeve surrounding the latter. Such known self-inking hand stamps involve a relatively high manufacturing expenditure due to the aforementioned way in which the handle is mounted on the bow-shaped actuator and the way in which the guide for the sliding catch is provided on the metal-made actuator yoke. A further drawback is that processing operations involving close tolerances have to be carried out in relatively unfavorable locations, i.e., within the proximity of material bends.
SUMMARY OF THE INVENTION
It is an object of the present invention to create a self-inking hand stamp of the type specified above for which the expenditure required for manufacturing the handle and its mounting on the actuator yoke, and the expenditure needed for making the sliding catch and the guide for the latter are distinctly less than heretofore, without curtailing the usefulness of the hand stamp.
The self-inking hand stamp according to the invention has a handle which is made of rigid plastic material and fixed on the actuator yoke by means of a plurality of screws or pegs leading through holes in the actuator within the proximity of the outer edge of the handle disposed on the actuator yoke. In the case where pegs are used, the latter are shaped by integral molding on the side of the handle facing the actuator yoke. The guide for the sliding catch is arranged in the handle. Such a hand stamp appropriately meets the aforementioned object. The handle, which can be manufactured in a relatively simple way by pressing or injection molding from rigid plastics, can be fixed on the actuator in a simple and labor-saving way by means of the screws or pegs integrally molded with the handle. Furthermore, a guide for the sliding catch can be formed in the handle in the course of manufacture of the latter without excessively increasing the manufacturing expenditure for making said handle.
A very simple embodiment in terms of construction is obtained if provision is made for fixing the handle on the actuator yoke with self-tapping screws.
A very simple embodiment in terms of construction is obtained if provision is made for fixing the handle on the actuator yoke with self-tapping screws.
A particularly simple assembly of the handle on the actuator yoke is achievable if pegs are integrally molded with the actuator yoke and provided with hook-like attachments or undercuts for keeping the pegs locked in the actuator yoke. I
REFERENCES:
patent: 104967 (1870-07-01), Lehman
patent: 232349 (1880-09-01), Hill
patent: 233285 (1880-10-01), Scotford
patent: 280652 (1883-07-01), Moise
patent: 527208 (1894-10-01), Leavenworth
patent: 655379 (1900-08-01), Scotford
patent: 973556 (1910-10-01), Peterson
patent: 1042766 (1912-10-01), Carleton
patent: 1085489 (1914-01-01), Rushworth
patent: 1710633 (1929-04-01), Marks
patent: 1730365 (1929-10-01), Grabler
patent: 2079080 (1937-05-01), Melino
patent: 2314828 (1943-04-01), Humphries
patent: 2829594 (1958-04-01), Goc
patent: 3466690 (1886-08-01), Scotford
patent: 3779164 (1973-12-01), Study
patent: 4823691 (1989-04-01), Muller
patent: 4823696 (1989-04-01), Skopek
Burr Edgar S.
Raciti E. P.
LandOfFree
Self-inking Tumble type hand stamp does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Self-inking Tumble type hand stamp, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Self-inking Tumble type hand stamp will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-101691