Improvements in Relief Stamping and Printing Machines.
Year: 1899

page_text: Date of Application. 11th Oct., 1899.
Complete Specification Left, 11th Aug., 1900-Accepted, 29th Sept., 1900
Improvements in Relief Stamping and Printing Machines.
We, FRED WAITE, of The Lindens, Burras Lane, Otley, in the County of York,
Printers' Engineer
and WAITE & SAVILLE, Limited, of Falcon Works Otley
aforesaid, Printers' Engineers, do hereby declare the nature of this invention to
be as follows:-
This invention relates to improvements in relief stamping and printing
machines that is to say machines for printing in relief by means of an engraved
or similar die or plate.
To wipe the ink off the face of the die before the impression is made a wiper
or wiping pad is used the face of which is rounded or curved convexly from the
front to the back. To continuously present a fresh wiping surface to the die, as
well as remove the surface out of contact with the die as it becomes soiled, we
impart a rocking motion to the wiper in such a way that the edge nearest to the
advancing die is 'first brought into contact with it and as this part moves or rocks
out of contact with the die a fresh portion of the curved wiper is brought to bear
upon it. In this way more or less the whole of the curved face of the wiper is
successively brought to bear upon the die. In order to maintain an uniform
tension on the paper or wiping material the rocking shaft or pivots by which the
wiper is mounted is located near to the edge first meeting the die and the frame-
work bearing the said shaft or pivots is sufficiently movable to allow the rocking
of the wiper to take place. A weight or spring is employed to press the wiper
against the die and when the latter, is out of contact the wiper is supported on a
suitable bearer at each side.
The wiper may be tilted by a cam on a cam shaft of the machine engaging an
anti-friction roller on one arm of a lever the other arm of which is connected by
a rod to an 'arm on a rock shaft having an arm preferably in the centre con-
nected to an arm or projection on the back of the wiper.
To wind up the paper from the wiper the take up drum on which the paper is
wound may be intermittently driven by a band passed over a pulley on its arbor.
One end of this band supports a weight and the other is connected to the ratchet
lever of the paper feed motion or other suitably vibrating part, a pawl or ratchet
is provided to prevent the take up drum rotating in the wrong direction.
To keep the ink from drying or congealing on the surface the ink duct is
mounted or suspended from centres and a sufficient oscillating motion is imparted
to the duct to keep the ink constantly agitated.
To reciprocate the vibrating carriage in which the plate or die is mounted
a rocking (shaft is employed which may be rocked by an arm fixed to it and
connected by a rod to an eccentric stud upon the spur wheel driving the impres-
sion mechanism. An arm which may be termed a toggle" arm may be secured
to the rocking shaft and its extremity is coupled to a toggle arm pivoted on the
"

page_text: carriage. A spring is introduced between the coupling of the two toggle arms so
as to break the rigidity of the connection. The parts are so arranged that when
the carriage has moved sufficiently to bring the plate or die into position to be
printed from the toggle arms are about to pass over the dead centre (that is to
say the point where the motion of the carriage in relation to that of the rocking
shaft is at its minimum) and the said eccentric stud is also at the same time
passing over its dead centre. This causes a dwell at each end of the stroke of
the carriage and at the printing end this is augmented by the carriage being
brought against a stop or stops and the said spring_connection is compressed by
the slight further extension of the toggle arms. To prevent the spring being
compressed when the plate or die is passing the wiper and being wiped a sector
piece is fixed to one of the toggle 'arms and is arranged to engage an anti-
friction roller on the other toggle arm whilst the plate is wiped. Other means
may be employed to prevent the spring being compressed whilst the wiping of
the die is taking place as for instance a stop arm or link may be pivoted to the
toggle arm carrying the spring beyond such spring and the other end engage
a stop on the other toggle arm, the latter being provided with a projection
arranged to disengage the stop arm from its stop after the wiping is completed.
The stop arm is arranged to fall back into position during the return stroke.
Dated this 10th day of October 1899.
DRACUP & NOWELL,
Patent Agents, Bradford.
COMPLETE SPECIFICATION.
Improvements in Relief Stamping and Printing Machines.
We, FRED WAITE, of The Lindens, Burras Lane, Otley, in the County of York,
Printers' Engineer and WAITE & SAVILLE, Limited, of Falcon Works Otley,
aforesaid, 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:-
This invention relates to improvements in relief stamping and printing
machines that is to say machines for printing in relief by means of an engraved
or similar die or plate.
To wipe the ink off the face of the die before the impression is made a wiper
or wiping pad is used the face of which is rounded or curved convexly from the
front to the back. To continuously present a fresh wiping surface to the die, as
well as remove the surface out of contact with the die as it becomes soiled, we
impart a rocking motion to the wiper in such a way that the edge nearest to the
advancing die is first brought into contact with it and as this part moves or rocks
out of contact with the die a fresh portion of the curved wiper is brought to bear
upon it. In this way more or less the whole of the curved face of the wiper is
successively brought to bear upon the die. In order to maintain an uniform
tension on the paper or wiping material the rocking shaft or pivots by which the
wiper is mounted is located near the edge first meeting the die and the frame-
work bearing the said shaft or pivots is sufficiently movable to allow the rocking
of the wiper to take place. A weight or spring is employed to press the wiper
against the die and when the latter is out of contact the wiper is supported on a
suitable bearer at each side.

page_text: To fully describe our invention, reference is made to the accompanying sheet
of drawings, forming a part of this specification, in whcih similar figures of
reference indicate corresponding parts in each of the views.
Figure 1, is a side elevation showing the improvements applied to the machine
for which we have made application for Letters Patent numbered 14749, dated
the 18th day of July 1899.
Figure 2, is a back view of the same.
Figures 3 to 8 are views of detail hereinafter referred to.
The wiper 2 is pivoted by its shaft A in the bearings 5 formed in the pivoted
and weighted frame 72 referred to in the above cited specification. The wiping
paper 75 passes under the wiper in the usual way and the wiper is curved con-
vexly in relation to the plane of motion of the die 6 which latter is reciprocated
in the manner described in the specification of the above cited application. The
ends of the wiper rest upon side supports 7 mounted upon the tops of the
guides 3. These supports are preferably adjustable in height and support the
wiper when it is not resting upon the die.
Whilst the die passes beneath the wiper the latter is rocked in the manner
shown in Figures 3, 4 and 5. The arrows show the direction in which the die
is moving. Figure 3, shows the position of the wiper when the die first meets
it. Figure 4, shows the die and wiper when the former is about half wiped, and
Figure 5 shows the completely wiped die 'passing out of contact with the wiper.
The form of the wiper and the movement thereof greatly facilitate the perfect
wiping of the die.
The wiper is rocked by its arm 10 connected by the link 12 to the arm 13
on the rockin shaft 14. An arm 15 on the end of this shaft is connected by
the rod 16 to the arm 17 on the end of the rocking shaft 18 and the shaft 18
is rocked by its arm. 19 engaging the cam 20 on the cam shaft 62 of the machine.
The spring 21 compressed between the collar B on the rod 16 and the fixed
bracket C, is provided to keep the anti-friction roller 22 on the arm 19 against
the cam 20.
The carriage 4 is reciprocated by similar mechanism to that described in the
above cited specification. To prevent the spring 28 being compressed when the
die 6 passes it a sector piece 24 is secured upon the arm 70 to engage the anti-
friction roller 25 carried by the boss or collar 26 upon the lever 71. The sector
is so arranged that its curved edge bears against the roller 25 whilst the die is
passing the wiper. In the drawing the sector is shown just leaving the roller
as the die carriage is brought into position to receive the impression.
Instead of the sector 24 the link 30 may be emploved as shown in Figures 6, 7
and 8. The link 30 is pivoted to the stud 31 and has a hook 32 to engage the
stud 33 in the arm 70. whilst the die is being wiped. The hook 32 is dis-
engaged from the stud 33, whilst the spring 28 requires to be compressed, by
the projection 35 on the lever 70 lifting the link clear of the stud 33. Figure 6
is a side view showing the link engaging the stud 33, Figure 7 shows it dis-
engaged therefrom by the projection 35; and Figure 8 is a plan view of the same.
Having now particularly described and ascertained the nature of our said
invention, and in what manner the same is to be performed, we declare that what
we claim is:
1. In a relief printing press, a rocking wiper arranged and operating substan-
tially as herein described.
2. In a relief printing press, a wiper mounted on a pivoted frame such as 72
and rocked by suitable mechanical means such as the parts numbered 10 to 22
substantially as herein described.
:
3. The improved rocking wiper in combination with the pivoted frame 72 and
the parts numbered 10 to 22 for rocking the wiper, substantially as shown in
the drawings.
4. The combination with a rocking wiper moving in relation to the die as

page_text: shown in Figures 3, 4 and 5, of side supports adapted to support the ends of the
wiper, substantially as herein described.
5. The combination with the toggle levers for reciprocating the die carriage,
of the sector 24 and anti-friction rollers 25, substantially as and for the purpose
herein described.
'
6. The combination with the toggle levers for reciprocating the die carriage,
of the hooked link 30 engaging the stud 33 and the projection 35 for disengag
ing it therefrom, substantially as and for the purpose herein described.
Dated this 9th day of August 1900.
DRACUP & NOWELL,
Patent Agents, Bradford.