AN IMPROVED ENDORSING OR MARKING PRESS OR STAMP
Year: 1870

page_text: PROVISIONAL SPECIFICATION left by John Tictjen at the Office of
the Commissioners of Patents, with his Petition, on the 30th March
1870.
I, JOHN TIETJEN, of Upper Charles Street, Goswell Road, in the
County of Middlesex, Press Maker, do hereby declare the nature of the
said Invention for "AN IMPROVED ENDORSING OR MARKING PRESS OR STAMP,"
to be as follows:-
This Invention is designed for the purpose of affording a more efficient
and easier self-acting, endorsing, or marking press or stamp than those
at present in use.
"
This improved press or stamp, which I propose to call the "elliptical
endorsing press or stamp," is constructed as follows:-On a suitably
formed bed plate I fix an upright standard or "centre provided with
a socket working round the same. To this socket (at convenient
heights and distances apart) are attached by lugs or other convenient
means two arms working on centres or between jaws or other equivalent
appliances secured to the socket. The other ends of these arms are
attached (so as to move casily) to a vertical column or support holding

page_text: the endorsing or marking stamp at such parts of the same that the
space between the centres of the ends of the arms shall be equal to the
space between the centres of the other ends of the arms where they are
attached to the socket, so that the two arms may have a parallel motion.
To the under side or other suitable part of the top arm at the end near
the socket and to the upper side of the bottom arm but at the opposite
extremity I insert or attach a screw pin or other similar appliance (such
as a catch or projection) capable of holding an india-rubber or other
suitable spring so placed as to lift the stamp together with the column,
and keep it in position ready for its next stamping or marking operation.
To the under side of the lower arm and about midway of its length is
attached by screws or otherwise a slotted "ball socket," and immediately
under this is a small upright pedestal or standard provided with an
inclined and similar ball socket, but with its face inclined in an opposite
direction. These two ball sockets are put in communication with cach
other by means of a short rod or arm provided with a ball at either end,
each ball working in one of the sockets. The inking pad and the
endorsing or stamping pad are put one on either side at equal distances
from the longitudinal vertical centre of the stamp.
The stamping or marking apparatus in its traverse from the ink pad
to the other pad has to follow a curve, the centre of which is the lower
ball working in the socket on the short pedestal, and the highest point
of the same being that position in which the stamp or press remains at
rest at the time when it may be unattended by any acting or moving
power. The vertical column holding the stamp is prevented from
moving in any other than a vertical curvilinear way by means of its
connection with the parallel arms and socket, the "centro
33 or standard
acting as the horizontal centro of the curve or path taken by the
stamping or marking apparatus in its traverse from one pad to the other.
By the means above described a durable, strong, and cheap endorsing
or marking press or stamp is produced, which will be found much casier
and more certain in its action than those now in use, and not nearly so
liable to get out of order.