IMPROVEMENTS IN OPERATING MECHANISM AND CONSTRUCTION OF HAND STAMPS FOR ENDORSING AND SUCH LIKE PURPOSES." PROVISIONAL SP
Year: 1882

page_text: LETTERS PATENT to George Kissam Cooke, of the Firm of G. K. Cooke,
Hurles, and Co., of 170, Fleet Street, in the City of London, for an Invention
of "IMPROVEMENTS IN OPERATING MECHANISM AND CONSTRUCTION OF HAND
STAMPS FOR ENDORSING AND SUCH LIKE PURPOSES."
PROVISIONAL SPECIFICATION left by the said George Kissam Cooke at
the Office of the Commissioners of Patents on the 23rd January 1882.
GEORGE KISSAM COOKE of the Firm of G. K. Cooke Hurles & Co. of 170 Fleet
Street in the City of London. "IMPROVEMENTS IN OPERATING MECHANISM AND
CONSTRUCTION OF HAND STAMPS FOR ENDORSING AND SUCH LIKE PURPOSES."
This Invention relates to a certain improvement in mechanism for effecting the
rotation or semi-turn of the die plate of hand stamps of the so called rotary class.
In this class of hand stamps the axis of the die plate oxtends through slots in
the end checks of a stationary guide frame (which frame also carries the inking
pad).
The axis of the die plate is at its two outer ends received and turns in holes in
the lower ends of the yoke arms of the spring handle. The well known metal
hand stamp known as French stamps wherein the die plate is rotated by cogs and
studs at the side of the die plate and guide frame may be taken as a good
illustration of the rotary class of stamps referred to.
This invention consists in operating the turning of the die plate on its axis by
means of a stud or studs on one or both cheeks of the guide frame and furnishing
the die plate with an ear or ears on one or both ends thereof. Said ear or ears
engage with the stud or studs of the guide frame cheek or cheeks and is or are
formed as guide face or faces or as guide slot or slots according to whether the slots
in the guide frame cheeks are straight vertical slots or are curved slots with
vertical extremities. If the slots or guide faces are straight in the ear of the die
plate a curved slot is necessary in the cheeks of the guide frame but if the slot is
curved in the ear of the die plate the slots in the ends of the guide frame are
straight up and down. In both end cheeks of the stationary guide frame are

page_text: formned slots the lower and upper portions of said slots being vertical and as before
stated said slots are curved in the middlo to form a cam or the cam slot may be
upon an ear of the die plate.
The die plate or stamp carrier is carried upon a cross bar or on centre studs
which said bar or studs serve as the axis of the die plate so far substantially as
usually and is or passed through the slots of the stationary guide frame whether
said slots are curved or straight. The axis of the die plate turns in the extremities
of the yoke arms of the spring handle somewhat as formerly.
I will first describe the case in which the cain slot is formed in the end
checks of the stationary guide frame. The bearing ends of the yoke arms and the
holes therein are enlarged horizontally to allow of a lateral displacement of the axis
of the die plate as it descends the cam slot of the guide framo.
The die plate is provided with one or more ear or ears at the end thereof and
standing at right angles thereto which car or ears serve as guide faces against
which the stud or studs of the stationary guide frame cheeks bears or takes or the
said ear or ears of the die plate have slot or slots therein.
The yoke arms of the spring handle are guided vertically on the stationary guide
frame by means of vertical slots in the yoke arm and said slot of the yoke arms
engage with studs upon the stationary guide frame or vertical guides may be
formed on the side of the guide fraine in which case the yoke arms will be straight
in outline for purpose of sliding in the guides. The ends of said yoke arms are as
before stated provided with ears projections or wide portions slotted horizontally
to receive the outer extremities of the die plate axis-said horizontal slots of the
yoke arms ends being of equal length with or exceeding the lateral deviation from
the vertical of the of the cam slot or slots in the guide frame.
In operation upon passing down the handle and the yoke arms thereof the axis
of the die plate in passing down the cam slots of the stationary guide frame, presses
the ear or cars of-the-die-plate-against-the-stationary stud or studs provided inside
the checks of the guide frame, and, as said stud or studs is or are eccentric to the
course of the cam the die plate upon the first half of the stroke is rotated a quarter
turn by the cam gives an outward movement and upon further pressing the spring
handle the axis of the die plate still passing down the cam slots of the stationary
frame continues to force the side of the guide face or slot of the die plate ear or
ears against the stationary stud or studs on the guide frame cheeks and completes
the half turn of the die plate and upon pressure being removed from the spring
handle the said die plate is returned back it its original position out of use
and against the inking pad to receive a fresh supply of ink for the next impression
and so on.
In the caso of the curved cam-slot being formed in the car of the die plate the
slot in the end cheeks of the guide frame is vertical and the cam slot is formed
somewhat of V or U shape into which the stud on the inside of the cheeks of the
guide frame takes. This said stud runs down one arm of the slot on the first half
of the depression of the handle and turn of the die plate and then passes down the
other arm of the slot on completing the depression of the handle and semi-turn of
the die plate. In addition à trip-catch and stud may be provided on the opposite
side of the die plate to ensure absolute certainty of the entry of the stud into the
respective branches of the cam slot, thus in both cases rotation of the die plate is
effected by means of the stud or studs of the guide frame which bears or bear upon
the ear or ears of the die plate at a point outside the line of the course traversed
by the die plate axis whether such axis in one case passes down a cam slot, in the
other case down a vertical slot of the stationary guide frame

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed
by the said George Kissam Cooke in the Great Seal Patent Office on the
22nd July 1882.
E
GEORGE KISSAM COOKE of the Firm of G. K. Cooke Hurles and Co. of 170 Fleet
Street in the City of London. IMPROVEMENTS IN OPERATING MECHANISM AND
CONSTRUCTION OF HAND STAMPS FOR ENDORSING AND SUCH LIKE PURPOSES."
This invention relates to certain improvements in mechanism for effecting
the rotation or semi-turn of the die-plate of hand stamps of the so-called rotary
class. In this class of hand stamps the axis of the die plate extends through
slots in the end cheeks of a stationary guide frame (which frame also carries the
inking pad). The axis of the die plate is at its two outer ends received and turns
in holes in the lower ends of the yoke-arms of the spring handle. The well known
metal hand stamp known as "French stamps" wherein the die-plato is rotated by
cogs engaging with studs at the side of the die plate and guide frame may be
taken as a good illustration of the "rotary class" of hand stamps referred to.
This Invention consists in operating the turning of the die-plate on its axis by
means of a stud or studs fixed on the inside of one or both cheeks of the guide
frame and the die plate is furnished with an ear or ears on one or both ends
thereof. Said ear or ears engage with the stud or studs of the guide frame cheek
or checks and is or are formed as guide face or faces or as guide slot or slots
according to whether the slots in the guide frame checks are straight vertical slots
or are curved slots with vertical extremities. If the slot or guide faces are straight
in the ear of the die plato a curved slot is necessary in the cheeks of the guido
frame but if the slot is curved in the car of the die plate a curved slot is necessary
in the cheeks of the guide frame but if the slot is curved in the ear of the die plate
the slots in the ends of the guide frame are straight up and down.
The drawings hereunto annexed and the following particular description will
clearly ascertain the invention.
Fig. 1 represents in sectional side view of one end of the stationary guide frame
with a cain slot therein; Figs. 2 and 3 represent the rotating die plate ends
provided with guide cars. Fig. 4 shows combined with this rotating die plate a
slot therethrough and bracket arms for the addition of movable types as for dating
and changeable expression purposes. Fig. 4 shows body for the movable types
and separating plates which I employ between the bands of types. Fig. 5 shows
general view of stamp in out of use position that is also in the inking position and
dating appliance is not shown applied; Fig. 6 in an end view of the stamp Fig. 5;
Figs. 7, 8, and 9, represent by sectional views the rotating die-plate from the
inking position to stamping position; Fig. 10 is a central section showing inside
of one end of stamp made according to the modification wherein the cam slot is in
the car of the rotating die plate and the straight slot in the guide frame. Fig. 10ª
shows in like view the opposite end of the stamp with a second tripping pen.
Fig. 10b is a modification of the same end Fig. 10º.
Referring to Figs. 1 to 9 on both sides of the stationary guide frame A are
formed the cam slots a the upper and lower portions of said slots a being vertical,
the slots are enlarged a little in the centre than in their vertical part to ensure an
easy movement and but little friction of the parts when the' die-plate is turning.
Upon the inner side of one or on both sides of the stationary guide frame A and
directly opposite and close to the centre of the cam slots a is or are provided a
tripping stud or studs c.

page_text: The rotating die plate C (which is the stamp carrier) is carried upon a cross
bar or on centre studs D which said bar or studs D is or are passed through the
cam slots a and is or are free to turn in the slotted extremities E' of the yoke
arms E of the spring handle E' (this spring handle is common to rotary stamps
generally). The said die-plate C is provided with one or more ear or cars F at
the end thereof which ear or cars serve as tripping guides and engage with the
tripping stud or studs c. These tripping guides may be guide faces b as shown
in Figs. 3, 4, 5, 7, 8, 9 or be slots as shown in Fig. 2.
The yoko arms E of the spring handle E' are guided vertically on the stationary
guide frame by means of vertical slots E³ in which engage studs A' upon the
stationary guide frame or vertical guides may be formed on the side of the guide
frame A in which case the yoke arms will be straight in outline for purpose of
sliding in the guides. The ends of said yoke arms E are provided with ears pro-
jections or wide portions E¹ slotted horizontally wherein is received the outer
extremities of the die plate axis or studs D. The horizontal slots of the yoke arm
ends are of equal length with or exceeding the deviation from the vertical of the
excentricity of the cam slot or slots a of the guide frame.
In operation upon pressing down the handle and the yoke arms the studs D ride
against the cam a and the ears F in pressing against the studs c trip or turn the
die plate C over so that the die plate is rotated a quarter turn upon first half of
the stroke and take an outward movement from the vertical line and upon the
second half of the stroke the axis of the die plate still passing down the cam slot a
reaches the vertical part of said slot a thus completing the half turn and thence the
die plate is carried down to give off the impression. The ends of the cam slots a
are of same size as the thickness of studs D and thereby is secured correct register
of the die plate when in the act of inking the die or giving off the impression.
-Upon-pressure being removed from the spring handle the said die plate is
returned back to its original position out of use against the inking -pad-to-receive
a fresh supply of ink for the next impression and so on.
The die plate Fig. 4 is shown (for using this apparatus as a dating stamp as well
as a fixed die) with slotted bracket arms G on the back thereof which slots thereof
will receive the studs in the ends of the body which carries the bands of adjustable
date or expression type such body is indicated at Fig. 4 and I employ separating
supporting plates H between the flexible typo bands.
In conjunction with the slot of die plate C a flange or lip I is provided for
regulating the band type against previously to being projected through the slot
of the die plate.
In the arrangement shown in Figs. 10, 10 and 10b the construction is equivalent
to that before described; the cam slot a in this case being made in the ear F and
the vertical guide slots b in the guide frame A the fixed tripping stud c being in
the same relation to the said slots and the rest part of the construction. The cam
slot a has in this case as in the other the two vertical extremities with the
enlarged portion between them within which the turning or rotating of the plate
takes place.
To further ensure regularity of operation a tripping guide ear F' and tripping
stud c' is shown provided in Fig. 10 and again in Fig. 10b a similar tripping
ear F and tripping studs c' are shown provided.
The spring retaining button K is provided for holding the spring handle
depressed so as to have the die permanently exposed for stamping purposes when
so required.
Having now described the nature and particulars of the said Invention I
claim;
In rotating die-plate hand stamp mechanism the combination of the curved
slot a in the guide frame ends with the straight slots or guides 6 of the ears of
the rotating die plate acting against the tripping pin c of the guide frame or the
equivalent construction of the curved slot a in the ear of the rotating die plato

page_text: acting against the tripping pins o of and in combination with the straight slot b
in the guide frame ends constructed and operating as and for the purpose herein
set forth and as shown by the respective Figures 1 to 9 and 10 to 10b of the
Drawings.
In witness whereof I the said George Kissam Cooke have hereunto set my
hand and seal this Seventeenth day of July in the year of our Lord One
thousand eight hundred and eighty-two.