Improvements in Relief Colour Stamping Presses.
Year: 1899

page_text: PROVISIONAL SPECIFICATION.
Improvements in Relief Colour Stamping Presses.
I, ROBERT FRITH SPROULE, of No. 205, Uxbridge Road, in the County of
London, Engineer, do hereby declare the nature of this invention to be as
follows;-
screw moves an
My invention relates to stamping presses of the kind in which a reciprocating
upper die up and down while a reciprocating table moves
the lower die under a colour brush and wiper and then under the upper die to
receive an impression on paper or other material placed on the lower die.
The wiper which clears pigment off the face of the die is usually a strip of
paper moved along under a pad while the lower die passes under it.
According to my present invention I give this pad a vertically reciprocating
movement by which it is raised clear of the die during its return stroke and is
depressed so as to wipe the face of the die only after the die has received pigment
and is making its stroke to the position for impression.
I move the table by a rack and reciprocating pinion to which I give motion
from a reciprocating cam, having a dwell to retain the die at rest while it receives
pigment from the brush.
By means of a reciprocating cam having several ridges and furrows the brush
is moved several times backwards and forwards over the die. And I make this
cam adjustable in its motion so as to bring one, two or more of its ridges and
furrows into action, according as the die requires to be brushed over by the colour
brush twice, or a greater number of times.
The brush is also adjustable in position to suit the length of the die. Instead
of moving the brush several times to and fro over the die, the brush may remain
at rest while the die is moved to and fro under it.
For moving the screw of the press, I cause a toothed segment which gears with
a deep pinion on the screw, to reciprocate by means of a crank pin bearing against
an arm of the segment so that the screw receives a gradual motion at the beginning
of its stroke and a more rapid motion afterwards, the shock of starting the screw
being thus greatly reduced.
The crank pin is preferably made adjustable radially so as to vary the stroke of
the screw.
The plunger which carries the upper die is fitted to slide in a stationary sleeve
having side slots through which pins from the plunger-project: These pins work
in_slots of a forked lever, which is urged upwards by an adjustable spring. By
varying the tension of the spring the force of the impression is varied as desired.
Dated this 24th day of January 1899.
ABEL & IMRAY,
Agents for the Applicant.

page_text: improvements in Relier Colour Stamping Fresses.
I, ROBERT FRITH SPROULE, of No. 205, Uxbridge Road, in the County of
London, Engineer, do hereby declare the nature of this invention and in what
manner the same is to be performed, to be particularly described and ascertained
in and by the following statement:--
a
My invention relates to stamping presses of the kind in which
reciprocating screw moves an upper die up and down while a
reciprocating table moves the lower die under a colour brush and
wiper and then under the upper die to receive an impression on
paper or other material placed on the lower die. The wiper which clears pigment
off the face of the die is usually a strip of paper moved along under a pad while
the lower die passes under it. According to my present invention, I give this pad
a vertically reciprocating movement by which it is raised clear of the die during
its return stroke and is depressed so as to wipe the face of the die only after the
die has received pigment and is making its stroke to the position for impression.
I move the table by a rack and reciprocating pinion to which I give motion from
a reciprocating disc cam.
For moving the screw of the press, I cause a toothed segment which gears with
a deep pinion on the screw to reciprocate by means of a crank pin with roller
revolving. against an arm of the segment so that the screw receives a gradual
motion at the starting of its stroke and a more rapid motion afterwards, the shock
of starting the screw being thus greatly reduced.
I fit the plunger which carries the upper die in a sleeve urging it upwards by a
spring which I can adjust to greater or less tension thus varying the force, of the
impression.
.
I also move the colour brush by a reciprocating cam having several ridges
and furrows which have the effect of moving the brush several times backwards
and forwards over the die, and I make this cam adjustable in position and motion
so as to bring one, two, or more of its ridges and furrows into action, according
as the die requires to be brushed over by the colour brush once twice or a greater
number of times.
The accompanying drawings shew portions of a relief colour, stamping press
embodying the improvements above mentioned.
Fig. 1 is a front view, Fig. 2 is a side view and Fig. 3 is a plan, the lower
framing, which is of any ordinary construction, being omitted, in order that the
working parts may be more clearly shewn. Fig. 4 is a. front view of the cam for
moving the table to and fro and Fig. 5 shews its forked rod. Fig. 6 is
front view
of the cam for moving the wiper up and down and Fig. 7 shews its forked rod
Fig. 8 is a front view and Fig. 9 is a back view of the cam for moving the colour
brush. Fig. 10 shews pieces for varying the stroke of the cam.
1 is the main shaft which is journalled in suitable bearings not shewn and has
on it fast. and loose pulleys 2, a bevil wheel 3 and a crank dise
having crank pin 4, which by means of a rack 5 gives recipro-
cating rotation to a pinion and cam shaft 6. On this shaft is fixed
a disc 7 having in it a cam path in which is engaged a roller mounted on a
forked rod 9, the path being made with a long dwell. The forked rod 9 has on
it a rack gearing with a pinion 10 on a vertical shaft which has on it another
pinion 11 gearing with a rack 12 attached to the table which is thus caused to
move to and fro, bringing the die 13 from its position under the upper die 14 to
its position under the colour brush 15, in which latter position it is held stationary

page_text: by the long dwell of the cam while it is brushed over a less or greater number of
times. The reciprocating shaft 6 has fixed on it an arm 16 which when the arm
makes its stroke in the direction of the arrow Fig. 6, meets a spring on a disc 17
and so turns the disc, but in its return stroke it passes over the spring without
turning the disc. A cam groove in the disc acts on a roller mounted on a forked
rod 18. As this rod is caused to move to and fro an inclined shoulder 18* on its
under side acts upon a roller mounted on a rod 19 which is urged upwards by a
spring and which is attached to an L shaped vertically guided slide 20 under
which passes the strip of paper 21 employed for wiping the die 13 after it has
received ink from the brush 15. The movement of the slide 20 is so timed that
the paper strip is raised clear above the die 13 as it is passing towards the brush 15,
but is depressed so as to wipe the die as it returns to the stamping position. The
paper strip 21 is unwound from a reel 22 on to a reel 23 which has on it a ratchet
wheel turned step by step by a pawl pivotted on a lever 24 which is moved at every
stroke of the table by a pin 25 therein its back stroke being limited by a pin
inserted in one or other of several holes in the edge of the table guide so as to
vary. the stroke of the lever 24.
:
The bevil wheel 3 gearing with a wheel 26 drives a vertical shaft 27 carrying at
its top a disc on which is mounted a roller 28, its axis being held in a slotted hole
of the disc so that it can be set nearer to or farther from the axis. A. toothed
segment 29 fixed on a vertical spindle 30 has an arm 31 which is pressed against
the roller 28 by a spring 32 drawing a cord or chain wound on a pulley 33 on the
lower end of the spindle 30. The segment 29 gears with a deep pinion 34 fixed
on the top of the press screw 35. As the disc with its roller 28 continuously
revolves the segment 29 is caused to reciprocate giving reciprocating rotation to
the press screw 35, the extent of this rotation being varied by varying the eccen-
tricity of the roller 28. The upper die 14 is raised by a forked lever 36 and
adjustable spring 37 when the press screw 35 rises, and is forced down when the
press screw descends upon it. By adjusting the tension of the spring 37, the
impression may be regulated.
moves
.revolution
act upon
For moving the colour brush 15 I employ the cam disc 38 the groove in the
front of which has several ridges and furrows, receiving a roller mounted on a
rod 41. The back of the disc has a circular groove made to receive one or other
of the filling pieces 39 shewn in Fig. 10, these filling pieces being made of such
width that when they are held in the groove by a screw they project beyond its
rear face in the path of an arm 40 which is fixed on the reciprocating shaft 6.
When the short filling piece is in
the groove then the arm 40
in making its forward and backward stroke through one revolution
the disc 38 through a very small part of a
not enough for any of the ridges or furrows of the cam to
the rod 41. But when one of the longer filling pieces is fixed in the groove, then
the arm 40 moves the disc 38 to and fro through a greater part of a revolution
thus bringing one, two or more of the ridges and furrows to act on the rod 41
giving it a to and fro reciprocating motion. A rack on this rod gears with a
pinion 42 on a vertical shaft, a wheel 43 on which gears with a rack on the side
of the slide 44 which carries the brush 15 in a slide which can be adjusted in
position and held by a setting screw. Thus according as a short or long one of the
filling pieces 39 is held in the rear groove of the disc 38, the brush 15 is caused
to reciprocate a greater or less number of times over the die..
In order to prevent the disc 38 from moving except when the arm 40 meets
either end of the filling piece 39, a brake block 45 is pressed by a spring against
the edge of the disc...
Having now particularly described and ascertained the nature of this inven-
tion and in what manner the same is to be performed, I declare that what I claim
as improvements in a relief colour stamping press is:-
1 For giving reniermenting ratation to the cam choft f; the combination of the

page_text: driving shaft 1 the crank disc 4 thereon, the rack 5 and pinion on the shaft 6,
substantially as described.
2. For raising and lowering the wiping strip 21, the combination of the arm 16
on the shaft 6, the pawl and disc cam 17, the rod 18 having an inclined
shoulder 18 spring 19 and vertical slide 20, substantially as described.
3. For moving the die table to and fro, the combination of the reciprocating
cam disc 7 on the shaft 6, the rack rod 9, pinions 10 and 11 and rack 12 on the
die table, substantially as described.
4. For reciprocating the colour brush the combination of the arm 40 on the
shaft 6, the cam disc 38, rack rod 41, pinions 42 and 43 and rack slide 44 carrying
the brush 15 substantially as described.
5. For giving reciprocating rotation to the press screw 35, the combination
of the driving shaft. 1, bevil gear 3 and 26, vertical shaft 27, adjustable crank
roller 28, arm 31 and toothed segment 29 on shaft 30 and deep pinion 34 on screw
spindle 35, also pulley 33 on shaft 30, and spring 32 substantially as described.
6. For raising the upper die the combination therewith of the forked lever 36
and adjustable spring 37, substantially as described.
7. A relief colour stamping press constructed and operating substantially as
described with reference to the drawings.
Dated this 18th day of October 1899
ABEL & IMRAY,
Agents for the Applicant.