AN IMPROVED STAMPING MACHINE
Year: 1867

page_text: LETTERS PATENT to John Turner and Robert Buchanan Dunnett, of
Liverpool, in the County of Lancaster, Stationers, for the Invention of
"AN IMPROVED STAMPING MACHINE."
Sealed the 6th December 1867, and dated the 8th June 1867.
PROVISIONAL SPECIFICATION left by the said John Turner and. Robert.
Buchanan Dunnett at the Office of the Commissioners of Patents, with.
their Petition, on the 8th June 1867.
We, JOHN TURNER and ROBERT BUCHANAN DUNNETT, of Liverpool, in the
County of Lancaster, Stationers, do hereby declare the nature of the said
Invention for "AN IMPROVED STAMPING MACHINE," to be as follows:-
Our Invention relates to machines for stamping or impressing devices or
characters on paper and other fabrics and substances, in ink or colours, or in.
sunk or raised characters, and to that class thereof in which the die and the
handle by which it is moved are made to describe a curve in passing from the
inking or colour pad or place of rest to the part where the fabric or substance.
is stamped or receives the impression.

page_text: Our said machine, which is, by preference, made of such a size that it can
be easily moved by hand, is provided with a substantial base piece and rising
frame. In the latter a horizontal shaft is borne; this shaft supports a moveable
frame at the outer end of which another or second horizontal shaft is carried.
To the said second horizontal shaft the operating handle and die are affixed,
the latter being nearest the base piece. To keep the face of the die parallel
to the surface of the inking pad and surface where the papers or articles are
stamped, these surfaces are preferably on the same plane at opposite ends of
the base piece, we employ a coiled spring which is attached to the moveable
frame and second horizontal shaft, and a check chain or flexible agent attached
to the second horizontal shaft and to the fixed frame. The spring has a
tendancy to cause the die to turn too far round in one direction, the check
chain prevents this. When the operating handle is moved and the die removed
from the inking pad to the other side to give an impression the check chain is
wound from the fixed frame on to the second horizontal shaft, and when
moved back the reverse action takes place.
SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said John Turner and Robert Buchanan Dunnett in the Great
Seal Patent Office on the 7th December 1867.
TO ALL TO WHOM THESE PRESENTS SHALL COME, we, JOHN
TURNER and ROBERT BUCHANAN DUNNETT, of Liverpool, in the County of
Lancaster, Stationers, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Eighth day of June, in the year of our Lord
One thousand eight hundred and sixty-seven, in the thirtieth year of Her
reign, did, for Herself, Her heirs and successors, give and grant unto us, the
said John Turner and Robert Buchanan Dunnett, Her special license that
we, the said John Turner and Robert Buchanan Dunnett, our executors,
administrators, and assigns, or such others as we, the said John Turner and
Robert. Buchanan Dunnett, our executors, administrators, and assigns, should
at any time agree with, and no others, from time to time and at all times
thereafter during the term therein expressed, should and lawfully might
make, use, exercise, and vend, within the United Kingdom of Great Britain
and Ireland, the Channel Islands,, and Isle of Man, an Invention for "AN
IMPROVED STAMPING MACHINE," upon the condition (amongst others) that we, the

page_text: said John Turner and Robert Buchanan Dunnett, our executors or adminis-
trators, by an instrument in writing under our, or their, or one of our or their
hands and seals, should particularly describe and ascertain the nature of the
said Invention, and in what manner the same was to be performed, and cause
the same to be filed in the Great Seal Patent Office within six calendar
months next and immediately after the date of the said Letters Patent.
NOW KNOW YE, that we, the said John Turner and Robert Buchanan
Dunnett, do hereby declare the nature of our said Invention, and in what
manner the same is to be performed, to be particularly described and ascer
tained in and by the following statement thereof, reference being had to the
accompanying Sheet of Drawings, and to the figures and letters thereon, that
is to say:-
Our Invention relates to a machine for stamping or impressing devices or
characters on paper and other fabrics and substances, in ink or colours, or in
sunk or raised characters, and to that class thereof in which the die and the
handle by which it is moved are made to describe a curve in passing from the
inking or colour pad or place of rest to the part where the fabric or substance
is stamped or receives the impression.
•
Our said machine, which is by preference made of such a size that it can
be easily moved by hand, is provided with a substantial base piece and rising
frame. In the latter a horizontal shaft is borne; this shaft supports a moveable
frame, at the outer end of which another or second horizontal shaft is carried.
To the said second horizontal shaft the operating handle and die are affixed,
the latter being nearest the base piece. To keep the face of the die parallel
to the surface of the inking pad and surface where the papers or articles are
stamped, these surfaces are preferably on the same plane at opposite ends of
the base piece, we employ a coiled spring which is attached to the moveable
frame and second horizontal shaft, and a check chain or flexible agent attached
to the second horizontal shaft and to the fixed frame. The spring has a
tendency to cause the die to turn too far round in one direction, the check
chain prevents this. When the operating handle is moved and the die removed
from the inking pad or place of rest to the other side to give an impression,
the check chain is wound from the fixed frame on to the second horizontal
shaft, and when moved back the reverse action takes place.
That our Invention may be clearly understood by others we have appended
hereunto a Sheet of illustrative Drawings containing three views of one of our
machines.
Fig. 1 represents a view in perspective, the stamp being raised a short

page_text: distance from the pad or die where the impression is made or given, and Figs. 2
and 3 represent respectively views in longitudinal elevation and plan, the stamp
in both resting on the inking or colour pad or place of rest. In all these
views like letters denote the same parts.
a, the base piece; b, the rising frame carrying the shaft c, whereon the
moveable frame & moves when the machine is being used; e, the operating
handle here shewn secured to d; f, the second shaft carried by and free to rock
on its axis in d; g, the stamp stem secured firmly to f, and g the stamp fitted
on to g and held in position by the pinching screw h; i, coiled spring secured
to d and also to f; this spring acts with a force tending to make f move on its
axis, and throw the stamp outwards towards the end of the machine shewn at
the left hand side of the Sheet of Drawings. The power of i to turn f and so
move g and g outwards as mentioned is checked by the chain ; which is
secured by pins or studs to the grooved pullies k and l. k is fastened on f, and
makes a partial revolution therewith on the same axis when the machine is
being used, and is fastened on the stationary shaft c. By these agents or
means the face of the stamp is kept at all points of the curve through which
it is caused to travel when moving from m to n, parallel to the face of n; the
dotted lines in Fig. 2 illustrate this; g' and the parts moving therewith are
shewn in the positions they occupy at different points. The length of chain
wound off from k, during movement of g¹ from m towards n, is taken on by 1,
the contrary is the case during movement from n to m; m is an ordinary ink
or colour pad when the machine is used to make surface impressions in ink or
colour, and a soft surface when it is the place of rest for g¹; n is a smooth
flat surface of vulcanized india-rubber or other soft substance, when the
machine is used to make impressions in ink or colour, and a die or matrix
when it is used to emboss.
Although we prefer the construction or arrangement of machine exactly
as above described it will be obvious many modifications and substitutions
can be made and effected without departing from the leading features of our
Invention.
In illustration thereof we may here mention (a) that the shaft e instead of
being fixed can be left free to rock or move round on its axis the required
distance with the inner end of d, the pulley e would in this case be fixed
directly to the base a or frame b; (b) the operating handle e can be secured
to f instead of to d; (c) another form of spring could be adapted to per-
form the same functions as the coiled spring, and in large machines balance
weights could be used in the place of springs altogether; (d) wire cords or

page_text: bands, or other cords or bands not elastic, can be substituted in the place of
the chain j.
Having now described the nature of our said Invention and particularized
the same, we claim,-
First, the combination in stamping machines of the chain, or other flexible
agent and the spring i, or its equivalent, with the shaft f, substantially in the
manner set forth.
Second, the combination and arrangement of parts herein described and
shewn on the Drawings operating substantially in the manner and for the
purpose set forth.
In witness whereof, I, the said John Turner, for myself and partner,
the said Robert Buchanan Dunnett, have hereunto set my hand and
seal, this Fifth day of December, 1867.
In the presence of
EDWARD JN. CHARLISH.
JOHN TURNER. (L.S.)