Improvements in Platen Printing Presses.
Year: 1899

page_text: Date of Application, 27th Apr., 1899
Complete Specification Left, 29th Jan., 1900 -Accepted, 31st Mar., 1900
VIRAL DIECIFICATION.
Improvements in Platen Printing Presses.
We, FRED WAITE, of The Lindens, Burras Lane, Otley, in the County of York,
Printer's Engineer, and WAITE & SAVILLE, LIMITED, of Falcon Works, Otley,
aforesaid. Printer's Engineers, do hereby declare the nature of this invention
to be as follows:.
This invention more particularly relates to the platen printing presses for
which we have made applications for Letters Patents No. 6274 of 1898 and
No. 12878 of 1898 and it consists of certain improvements or modifications in
the grippers employed to engage the edge of the sheet to be printed and carry it
from the feed table into position to receive the impression.
For this purpose we mount the grippers on a gripper shaft or spindle located
sufficiently in advance of the front edge of the platen and sufficiently away from
the face of the platen to permit the delivery grippers to pass to lay hold of the
sheet, and the grippers are of such a form that when open they offer no obstruction
to the withdrawal of the sheet.
Or as a modification the gripper shaft or spindle may be mounted below or
behind the platen face a suitable distance in advance of the front edge, and to
release the sheet the shaft is turned approximately half a revolution so as to
turn the grippers over completely away from the edge of the sheet and offer
no obstruction to its withdrawal.
A continuous gripper pivoted in either of the above positions may be used.
Dated this o6th day of
1 1000
DRACUP & NOWELL,
Patent Agents, Bradford.
Improvements in Platen Printing Presses.
We, FRED WAITE, of The Lindens, Burras Lane, Otley, in the County of York,
Printer's Engineer, and WAITE & SAVILLE, LIMITED, of Falcon Works, Otley,
aforesaid. Printer's Engineers, 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 more particularly relates to the platen printing presses for
which
we have obtained Letters Patents No. 6274 of 1898 and
No. 12878 of 1898 and it consists of certain improvements or modifications in
the grippers employed to engage the edge of the sheet to be printed and carry it
from the feed table into position to receive the impression.
For this purpose we mount the grippers on a gripper shaft or spindle located
sufficiently in advance of the front edge of the platen and sufficiently away from
the face of the platen to permit the delivery grippers to pass to lay hold of the
[Price 8d.1

page_text: sheet, and the grippers are of such a form that when open they offer no obstruction
to the withdrawal of the sheet.
Or as a modification the gripper shaft or spindle may be mounted below or
behind the platen face a suitable distance in advance of the front edge, and to
release the sheet the shaft is turned approximately half a revolution so as to
turn the grippers over completely away from the edge of the sheet and offer
no obstruction to its withdrawal.
A continuous gripper pivoted in either of the above positions may be used.
To fully describe our invention, reference is made to the accompanying sheet
of drawings, forming a part of this specification, in which similar figures of
reference indicate corresponding parts in each of the views.
Figure 1, represents a side view of such parts of the machine described in our
Specification No. 12878 of 1898 as are necessary to illustrate the application
thereto of a new construction or arrangement of the gripper.
Figure 2, is a plan view of the same.
Figure 3, is a similar view to Figure 1 but the platen is shown down in the
position in which it receives the impression and the gripper is shown open.
Figures 4, 5 and 6 illustrating a modification are similar views to Figures 1, 2
and 3.
The platen C the lever F5 and the tappet F are constructed and actuated in
the same way as that described in Specification No. 12878 of 1898.
Referring firstly to Figures 1, 2 and 3. The rocking shaft 3 carrying the
gripper E is mounted in bearing lugs 2 projecting from the delivery edge of
the platen. It will be seen that the shaft E3 is sufficiently in advance of the face
of the platen to leave room for the delivery grippers to pass between the shaft
and the platen through the notches C8 in the gripper to lay hold of the sheet
also that when open the grippers form no obstruction to the withdrawal of the
sheet. An arm 4 projects from one end of the shaft E³ and a pin 5 on its end
engages the forked end 6 of the lever 7 pivoted on the stud 8 in the end of the
platen. A spring 9 stretched between the stud 10 in the end of the platen and
the lever 7 keeps the grippers closed until the tappet F is moved in relation to
the platen from the position shown in Figure 1 to that shown in Figure 3.
During the movement of the tappet its nose 12 engages the anti-friction roller E
and moves the lever 7 sufficiently to open the gripper.
In Figures 4, 5 and 6 the bearing lugs 2 are in such a position on the platen
that the shaft E3 is located below or behind the platen and therefore such shaft
forms no obstruction to the delivery gripper. In this case the lever 7 has a
toothed sector or rack 15 on one end to engage pinion 16 on the shaft E3 and each
time the gripper is opened turn it completely back to the position shown in
Figure 6 so as to form no obstruction to the withdrawal of the sheet.
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. The combination with the platen C of a gripper E pivoted thereto sufficiently
in advance of and away from the platen face that when open it forms no
obstruction to the withdrawal of the sheet, substantially as illustrated in
Figures 1, 2 and 3.
2. The combination with the platen C of a gripper E pivoted thereto sufficiently
behind or below the face of the platen than when open it forms no obstruction
to the withdrawal of the sheet, substantially as illustrated in Figures 4, 5 and 6.
Dated this 26th day of January 1900