Improvements in certain Platen Printing Machines.
Year: 1892

page_text: Date of Application, 1st Mar., 1892
Complete Specification Left, 1st Dec., 1892-Accepted, 28th Jan., 1893
PROVISIONAL SPECIFICATION.
Improvements in certain Platen Printing Machines.
I, THOMAS FORKNALL of Blake Street Churchgate, Leicester, in the County
of Leicester, Engineer, do hereby declare the nature of this invention to be as
follows:-
My invention relates to those platen printing machines in which the paper to be
printed is placed by the operator on the platen and consists in means by which I
am enabled to secure accuracy in the placing of the paper in position for being
printed without requiring the great care and attention hitherto necessary on the
part of the attendants supplying such machines with the sheets of paper to be
printed.
My invention consists firstly in providing each of the printing machines to
which my invention is applied with an adjustable guide or adjustable guides moved
in or by the working of the machine which guide or guides moves or move each
sheet of paper placed on the platen of the machine to be printed into the precise
position which it is required to occupy while being printed. The adjustable guide
or guides provided in accordance with this part of my invention may be made of
any suitable form and may be moved by means of any suitable arrangements of
mechanism such as cams or cranks or linkwork connected to any suitable part or
parts of the machine. The said adjustable guide or guides is or are so arranged
that such guide or guides will continue in contact with the platen at all times in
which it or they may be needed to act upon a sheet of paper placed upon the
platen of the machine and that when a sheet of paper to be printed has been
placed upon the platen in contact with or within a certain distance of the guide or
guides aforesaid the said guide or guides will before the paper is secured in
position to be printed move such paper into the precise position which it ought to
Occupy upon the platen. If one guide is provided in accordance with this part of
my invention it will be so arranged as to move or adjust the paper into the
required position in the direction of both the height and the width of the sheet to
be printed and if two or more guides are provided in accordance with this part of
my invention one or more of such guides will be employed to move or adjust the
sheet of paper upon the platen in the direction of the height of the sheet to be
printed and another or others of such guides will be employed to move or adjust
the sheet of paper upon the platen in the direction of the width of the sheet to be
printed. The adjustment of the paper in position being thus performed by the
machine it is not necessary for the attendant supplying the machine with paper to
take the scrupulous care which has hitherto been necessary to secure an accurate
register."
My invention consists secondly in arrangements of apparatus by means of which
the above described movement of adjustable guides upon or in conjunction with
the platens of printing machines to which my invention is applied may be
accomplished.
According to one arrangement of this part of my invention I provide in con-
junction with the platen of a printing machine a shaft or an equivalent or equiva-
lents therefor, upon which I mount in any suitable manner a finger or guide or
fingers or guides to act upon one edge of the paper to be printed and adjust
such edge into position. In order to act upon and adjust another edge of the
paper to be printed I mount a finger or guide or fingers or guides upon a block or
blocks which may be loose upon the shaft aforesaid or upon any other suitable part
provided in conjunction with the platen of the machine and may be caused to move
in one direction either by the turning of the shaft aforesaid or by the movement

page_text: of the part or parts on which the said block or blocks is or are mounted or by the
movement of other parts of the machine or by the action of a cam or cams or
crank or cranks or arrangements of levers or, other mechanism. In order that the
fingers or guides may be caused to accurately adjust the paper into position
suitable stops may be provided in order that the movement of such fingers or
guides may be limited as may be necessary and means are provided for the adjust-
ment of the said fingers or guides into the various positions in which it may be
desirable to place them. The shaft above referred to may be turned in one
direction by means of a cam or crank or by means of suitable levers or linkwork
and in the opposite direction by means of a spring or springs or other suitable
means. When the operative parts of the printing machine are in the position in
which a sheet of paper to be printed may be placed upon the platen of the printing
machine and a sheet of paper is placed upon the said platen in contact with or
within a certain distance of the fingers or guides above mentioned the continued
operation of the machine will allow or cause the fingers or guides above mentioned
to adjust the sheet of paper aforesaid into the precise position which it is required
to occupy.
When the said sheet of paper has been adjusted into the required position it
will be held in such position by means of the ordinary means employed for the
purpose until the printing is accomplished and afterwards the further operation of
the machine will cause or allow the shaft aforesaid or the other parts upon which
the fingers or guides above mentioned are mounted to be moved into a position
from which after a new sheet of paper to be printed has been placed upon the
platen of the printing machine they may again advance to adjust such sheet of
paper into the precise position which it is required to occupy while being printed.
According to another arrangement of this part of my invention I so connect
the finger or guide or fingers or guides employed to adjust one edge of the paper
to be printed to the finger or guide or fingers or guides employed to adjust the
other edge of the said paper or to the mechanism by which such finger or guide
or fingers or guides is or are operated that when one of such fingers or guides or
sets of fingers or guides is moved the movement will be transmitted to the other
finger or guide or set of fingers or guides.
According to another arrangement of this part of my invention I mount upon
or in any suitable part in proximity to the platen of the printing machine to which
this part of my invention is to be applied à bar or bars which is or are connected
by means of links to another bar or to any other suitable part or parts or provided
with inclined parts placed in contact with inclines provided upon another bar or
other part or parts. Upon one of the bars aforesaid I mount an adjustable guide
or finger or adjustable guides or fingers to adjust one edge of the paper to be
printed into the required position. By the bar upon which the said guides or fingers
are mounted or preferably by the bar or part or parts to which it is connected or in
contact with the inclined parts upon which are the inclines upon the said bar being
moved by the action of any suitable means provided for the purpose and operating at
suitable times during the working of the machine the guide or finger or guides or
fingers aforesaid is or are caused to move in the manner required and so adjust into
position one edge of each sheet of paper to be printed. A finger or guide or fingers
or guides mounted upon the bar or part or parts above described as being moved
serves or serve to adjust into the required position a second edge of the sheet of
paper to be printed.
Dated this Twont winch 1.
f

page_text: Improvements in certain Platen Printing Machines.
I, THOMAS FORKNALL, of Blake Street Churchgate, Leicester, in the
County of Leicester, 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 :-
My invention relates to those platen printing machines in which the paper to be
printed is placed by the operator upon the platen and consists in means by which
I am enabled to secure accuracy in the placing of the paper in position for being
printed without requiring the great care and attention hitherto necessary on the
part of the attendants supplying such machines with the sheets of paper to be
printed.
My invention consists firstly in providing each of the printing machines to which
my invention is applied with an adjustable guide or adjustable guides moved by the
working of the machine which guide or guides moves or move each sheet of paper
placed on the platen of the machine to be printed into the precise position which it
is required to occupy while being printed. The adjustable guide or guides
provided in accordance with this part of my invention may be made of any suitable
form and may be moved by means of any suitable arrangements of mechanism such
as cams or cranks or linkwork connected to any suitable part or parts of the
machine. The said adjustable guide or guides is or are so arranged that such
guide or guides will continue in contact with the platen at all times in which it or
they may be needed to act upon a sheet of paper placed upon the platen of the
machine and that when a sheet of paper to be printed has been placed upon the
platen in contact with or within a certain distance of the guide or guides aforesaid
the said guide or guides will before the paper is secured in position to be printed
move such paper into the precise position which it ought to occupy upon the platen.
If one guide is provided in accordance with this part of my invention it will be so
arranged as to move or adjust the paper into the required position in the direction
of both the height and the width of the sheet to be printed and if two or more
guides are provided in accordance with this part of my invention one or more of
such guides will be employed to move or adjust the sheet of paper upon the platen
in the direction of the height of the sheet to be printed and another or others of
such guides will be employed to move or adjust the sheet of paper upon the platen
in the direction of the width of the sheet to be printed. The adjustment of the
paper in position being thus performed by the machine it is not necessary for the
attendant supplying the machine with paper to take the scrupulous care which has
hitherto been necessary to secure an accurate register."
This part of my invention is illustrated by the accompanying drawings, which
also serve to illustrate a further part of my invention. In the accompanying
drawings,
Fig. 1 is a side view of a portion of a platen printing machine of the kind above
mentioned sufficient to illustrate my invention and
Fig. 2 is a view of a portion of that which is shown in Fig. 1 seen in the direction
indicated by the arrow (A) in Fig. 1.
Fig. 3 is a view showing on a larger scale portions of that which is shown in
Figs. 1 and 2.
Fig. 4 is a section taken on the plane indicated by the line (B) (B) of Fig. 3.
In Figs. 1, 2, 3 and 4 (a) is the platen of the
paper to be printed is placed by the attendant.
the shaft or axle (6) which is secured in bearings
machine and such platen (a) is moved by means
only one is shown in the accompanying drawings.
printing machine upon which the
The platen (a) is mounted upon
formed in the side frames of the
of connecting rods (c) of which
The line (D) (D) indicates the

page_text: position of the face of the type against which the paper to be printed is pressed
when being printed. In Figs. 2, 3, and 4 are shown three adjustable guides (d)
(d) (e) constructed and arranged according to this part of my invention. The
guides (d) (d) are arranged to act upon the lower edge of the sheet of paper placed
upon the platen (a) so as to move and adjust such sheet of paper into position in
the direction of its height and the guide (e) is arranged to act upon one side of
each sheet of paper placed upon the platen (a) and move and adjust the said sheet
of paper into the required position in the direction of the width of such sheet of
paper. By means of mechanism which will be hereinafter described in reference to
a further part of my invention the guides (d) (d) are caused to move so that
although when the platen (a) of the printing machine is in the position in which it
is indicated in Fig. 1 the guides (d) (d) will be in the positions in which they are
indicated in full lines in Fig. such guides (d) (d) will when the platen (a) is
caused to approach the type-bed be allowed to be moved by means provided for the
purpose so as to move a sheet of paper placed upon the platen into the precise
position which it is required to occupy when pressed against the type. The move-
ments of the guides (d) (d) are so regulated that the sheet of paper to be printed
will be placed in the precise position which it is required to occupy while being
printed, before the said sheet of paper becomes held by means of the usual
grippers () by which the paper is secured in position while being printed. The
position which the guides (d) (d) are caused to occupy when they have been moved
to adjust a sheet of paper into the required position in the direction of its height are
indicated by dotted lines (E) (E) in Fig. 3. In like manner by means of
mechanism which will be hereinafter described in reference to a further part of my
invention the guide (e) is caused to move so that when the platen (a) of the
printing machine is as is indicated in Fig. 1 in position to have placed upon it a
sheet of paper to be printed the guide (e) will be in the position in which it is
indicated in full lines in Fig. 3 and that when the platen (a) is caused to approach
the type-bed and before the sheet of paper placed upon the platen (a) becomes held
by the usual grippers (f) by which the paper is held in position while being
printed the said guide (e) will be allowed to be moved by means provided for the
purpose so as to move the sheet of paper placed upon the platen into the precise
position which it is required to occupy when pressed against the type. The
guide (e) is indicated in full lines in the position which it occupies when the
platen (a) is in position to receive a sheet of paper to be printed and the position of
the guide (e) when it has moved into position to adjust a sheet of paper into the
precise position which such sheet of paper is required to occupy while being
printed, is indicated by the dotted lines (F) in Fig. 3. Each of the guides (d) (d)
and (e) may be adjusted into position so as to be adapted to act upon sheets of
paper of various sizes to be printed by the printing machine from time to time and
the means provided to enable the adjustment of the guides (d) (d) and (e) which
may be necessary from time to time to be made may be of any suitable kind and be
arranged in any suitable manner. It is obvious that in cases in which it may not
be required the guide (e) or either of the guides (d) (d) may be dispensed with and
that in cases in which it may be desirable one broad guide (d) may be employed
instead of two narrower guides (d) (d) such as are indicated in Figs. 2 and 4.
The manner in which this part of my invention may be applied to a printing
machine may be varied as is above described and the modes in which the applica-
tion of this part of my invention to a printing machine may be varied will be
obvious without further description.
The employment of this part of my invention by ensuring that each sheet of
paper placed upon the platen of a printing machine by the attendant in charge of
such printing machine, within the limits of the movements of the guides (d) (d)
and (e) shall be adjusted by such guides (d) (d) and (e) into the precise position
in which it is required to be when being printed, renders it possible to dispense a
with a very great part of the care and scrupulous attention on the part of the
attendant in charge of the printing machine in the placing of the sheets of paper

page_text: in position to be printed which has hitherto been necessary and thus renders it
possible to work platen printing machines to which my invention is applied at a
higher speed than platen printing machines of the kind above mentioned to which
my invention is not applied.
My invention consists secondly in arrangements of apparatus by means of which
the above described movement of adjustable guides upon or in conjunction with
the platens of printing machines to which my invention is applied may be
accomplished.
According to one arrangement of this part of my invention I mount upon or in
any suitable part in proximity to the platen of the printing machine to which this
part of my invention is to be applied a bar or bars which is or are connected by
means of links to another bar or to any other suitable part or parts or provided
with inclined parts placed in contact with. inclines provided upon another bar or
other part or parts. Upon one of the bars aforesaid I mount an adjustable guide
or finger or adjustable guides or fingers to adjust one edge of the paper to be
printed into the required position. By the bar upon which the said guides or fingers
are mounted or preferably by the bar or part or parts to which it is connected or
in contact with inclined parts upon which, are the inclines upon the said bar being
moved by the action of any suitable means provided for the purpose and operating
at suitable times during the working of the machine the guide or finger or guides
or fingers aforesaid is or are caused to move in the manner required and so adjust
into position one edge of each sheet of paper to be printed. A finger or guide or
fingers or guides mounted upon the bar or part or parts above described as being
moved serves or serve to adjust into the required position a second edge of the
sheet of paper to be printed.
This part of my invention is illustrated by Figs. 1, 2, 3 and 4 of the accom-
panying drawings which have been referred to above.
To the platen (a) of the printing machine part of which is shown in Figs. 1, 2
and 3 of the accompanying drawings are secured brackets (g) (g) in which is
mounted the shaft or bracket (h) on which are secured the grippers (f) by which
the paper to be printed is secured in position before being pressed against the type,
the surface of which is indicated by the line (D) (D) in Fig. 1. (i) is a rod
mounted and capable of being slidden longitudinally in holes formed in the
brackets (g) (a) and () is a rod mounted in slots (g) formed in the brackets (g) (g)
and capable of being slidden therein in the direction indicated by the arrow (G)
and in the opposite direction. The rod () is prevented from being moved to and
fro longitudinally by means of pins (j') inserted in such rod (j) and bearing against
the brackets ()(g) or the rod (j) may be formed of a smaller diameter at the
parts which are inserted into the brackets (g) (g) in order that it may be incapable
of moving longitudinally. (k) is a spring secured at one end to the rod () and at
the other end to the adjacent bracket (g) and serving to draw the rod (i) in the
direction indicated by the arrow (H) so as to keep a bowl or roller () mounted
upon a stud (2) secured to the rod (i) in contact with a cam-surface (m¹) formed
upon an arm (m) mounted upon a stud (n) secured in the bracket (g) adjacent to
which is the spring (). To the arm (m) is connected one end of a connecting
rod () connected at its other end to the stationary framework (p) of the printing
machine by means of a stud (p¹) secured in such framework (p). The arm (m)
and connecting rod (o) are so arranged that as the platen (a) of the printing
machine is moved in the direction indicated by the arrow (J) into the position in
which it is indicated in Fig. 1 and which is the position occupied by the said
platen (a) when a sheet of paper to be printed is to be placed thereon, the bowl or
roller () upon the rod (i) will be acted upon by the cam-surface (m³) upon the
arm (m) which will be caused to turn upon the stud (n) in the direction indicated
by the arrow (K) and the rod (i) will thus be moved in the direction opposite to
that indicated by the arrow (H). The rod (i) is connected to the rod () by means
of links (7) each of which is at one end mounted upon a stud (3) inserted into the
rod (i) and is at its other end mounted upon a stud (1) inserted into the rod (j) and

page_text: consequently when the rod (i) is moved in the direction opposite to that indicated by
the arrow (H) by the cam-surface (m³) upon the arm (m) the rod (j) will be moved
laterally in the direction opposite to that indicated by the arrow (G). Upon the
rod () are mounted blocks (r) which are capable of being moved longitudinally
upon the said rod (j) and of being secured in any required position upon the rod ()
by means of set screws (¹). To each of the blocks (7) by means of a set screw (72) is
secured an adjustable guide (d) which at its end (d¹) bears against the platen (a)
of the printing machine. As the rod (i) is moved by the cam-surface (m²) upon
the arm (m) during the movement of the platen (a), in the direction opposite to
that indicated by the arrow (H) the adjustable guides (d) will be moved into the
positions in which they are indicated in full lines in Fig. 3. When the platen (a)
is being moved in the direction opposite to that indicated by the arrow (J) in order
to bring the sheet of paper placed upon the platen (a) into contact with the type
the cam-surface (m²) upon the arm (m) being moved so as to allow the rod (i) to
be moved by the spring (k) in the direction indicated by the arrow (H) the
adjustable guides (d) will be moved into the positions in which they are indicated
by the dotted lines (E) (E) in Fig. 3.
It therefore follows that if a sheet of paper
were placed in such position upon the platen (a) of the printing machine when
such platen (a) was in the position in which it is indicated in Fig. 1 that the lower
edge of such sheet of paper was in the space traversed by the guides (d) (d) in
moving from the positions in which such guides (d) (d) are indicated by full lines
to the positions in which they are indicated by the dotted lines (E) (E) the said
sheet of paper would be moved in the direction indicated by the arrow (G) upon
the platen (a) of the printing machine into a certain position and another sheet of paper
of equal size placed in like manner upon the platen of the printing machine would be
moved into a precisely similar position on another movement of the platen (a) in
the direction opposite to that indicated by the arrow (J) so that every sheet of
paper will be adjusted accurately into the required position in regard to its height.
Upon the rod (i) is mounted a block (s) which can be secured in
any required
position upon such rod (i) by means of a set screw (s¹). Upon the block (s) an
adjustable guide (e) is secured in any required position by means of a set screw (*).
When the platen (a) of the printing machine is in position to have a sheet of paper
to be printed placed upon it, the adjustable guide (e) will be in the position in
which it is indicated in full lines in Fig. 3 and as the rod (i) is moved in the
direction indicated by the arrow (H) by means of the spring (k) in the manner
above described the adjustable guide (e) will be moved into the position in which
it is indicated by the dotted lines (F) in Fig. 3. If when the platen (a) is in the
position in which it is indicated in Fig. 1a sheet of paper be placed upon the
platen (a) in such position that one of the sides of such sheet of paper is in
the space traversed by the guide (e) in moving from the position in which it is
indicated by full lines to the position in which it is indicated by the dotted
lines (F) the said sheet of paper would be moved upon the platen (a) in the
direction indicated by the arrow (H) into a certain position and another sheet of paper
of equal size placed in like manner upon the platen (a) of the printing machine would
be moved into a precisely similar position so that every sheet of paper will be
adjusted accurately into the required position in regard to its width. The set
screws (72) (s²) and the slots formed in the guides (d) (d) enable the said
guides (d) (d) and (e) to be adjusted into the various positions necessary to enable
them to adjust into the required positions sheets of paper of different sizes as may
be required from time to time. In order that the ends (d') (') of the guides (d) (d)
may be caused to bear always against the platen (a) I secure to each of the
blocks (1) by means of a set screw, a spring (w) the free end of which bears against
the lower surface of the platen (a) in such manner as to cause the guide (!)
secured to the block (r) to which the said spring (w) is secured to be pressed in
the direction indicated by the arrow (L) so that any play or inaccuracy in the
fitting of any of the parts may not permit the said guide (d) to pass out of contact
with the platen. (a). In order that the part (e¹) of the guide (e) may be caused to
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page_text: 06
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bear always against the platen (a) I secure by means of a set screw to the block (s)
to which the guide (e) is secured a spring () which bears against the lower surface
of the platen (a). The spring (a) tends to turn the guide (e) in the direction
indicated by the arrow (M) so that any play or inaccuracy in the fitting of any
of the parts may not permit the said guide (e) to pass out of contact with the
platen (a). The guides (d) (d) and (e) shown in the accompanying drawings are
shown as being formed of steel plates but it is obvious that such guides (d) (d)
and (e) may be made of a more rigid character and be mounted upon pivots of any
kind upon or in the blocks (r) and (s) respectively and be caused by means of
springs provided for the purpose to always bear against the platen (a) of the
printing machine. It is obvious also that the grippers (f) must be made of such
size and so placed that they will not come into contact with or interfere with the
action of the guides (d) (d) and (e).
In the arrangement of mechanism above described in reference to this part of
my invention the guides (d) (d) and (e) on completing the movement of each of
the sheets of paper to be printed into the required position are in their position
of rest, and are moved into such position by the direct action of the spring (k)
without motion being transmitted to them by any complicated mechanism and
consequently I am enabled to secure that the sheets of paper to be printed shall be
adjusted into the required position with very great accuracy. By the rods (i) (1)
being made of circular section as is indicated in the accompanying drawings it is
made very easy to place the adjustable guides (d) (d) and (e) in contact with the
platen (a) at any time.
Figs. 5 and 6 of the accompanying drawings illustrate a modification of the
arrangement illustrated in Figs. 1, 2, 3 and 4 in which the rod (i) which is employed
in the arrangement illustrated by Figs. 1, 2, 3, and 4 is dispensed with. Fig. 5 is
a view of a portion of a printing machine showing the platen and certain other
parts much as they are shown in Fig. 3, and Fig. is a section taken on the plane
indicated by the line (N) (N) of Fig. 5. In the modification illustrated in Figs. 5
and 6 the shaft or bar (h) on which the ordinary grippers (f) of the printing
machine are mounted is so mounted in the brackets (g) (9) secured to the platen (a)
as to be capable of being slidden longitudinally therein. To an arm (*) which
will be further mentioned hereinafter and which is mounted upon the shaft or
bar (h) is secured one end of a spring (k) which at certain times moves the shaft
or bar (h) in the direction indicated by the arrow (H) and the shaft or bar (h) is
provided with a bowl or roller (1) bearing against a cam-surface (m') formed upon
an arm (m) arranged, employed, and operating like that above described in
reference to Figs. 1, 2, 3 and 4. The shaft or bar (h) is connected by means of
the arm (2) to the ordinary mechanism by means of which the required movement
is imparted to the grippers (f) (f) secured upon the bar or shaft (h). Upon the
bar or shaft (h) are secured blocks (t) (t) each of which is prevented from turning
upon the said bar or shaft (4) and is formed with a projection (¹) to act in con-
junction with an inclined surface (¹) formed upon a block (1) secured upon the
rod () upon which the guides (d) (d) are secured. Springs (v) (v) are provided
at each end of the rod () to draw such rod () in the direction indicated by the
arrow (O). The blocks (u) (u) are secured upon the rod (7) in any suitable
manner. The guide (e) to adjust each sheet of paper being printed into position in
the direction indicated by the arrow (H) is secured upon a block (y) capable of
being turned upon the shaft or bar (4) and such guide (e) is pressed against the
platen (a) by means of a spring (a) similar to that above described.
the guide (e) may be caused to move to and fro in the direction indicated by the
arrow (H) and in the opposite direction along with the shaft or bar (h) the block (y)
is caused to be embraced by the block (-) to which one of the grippers (f) is
secured which block (3) may be secured to the shaft or bar (4) in any required
position by means of a set screw. The block (2) is so formed that the gripper (f)
to be secured upon it may be secured to such block (=) either in the position in
which it is indicated by full lines in Fig. 5 or in the position in which it is indicated
In order that

page_text: by the dotted lines (P) in such figure as may be necessary in practice. The
operation of the arrangement illustrated in Figs. 5 and 6 is capable of being readily
understood without further description, being substantially the same as that of the
arrangement illustrated in Figs. 1, 2, 3, and 4 the projections (t¹) (t¹), inclined
surfaces (u') (¹), and springs (v) (v) serving instead of the links (7) above described
in reference to Fig. 2. The gripper (1) secured to the block () is bent or
formed in the manner illustrated in Fig. 5 in order that the guide (e) may not
interfere with the action of such gripper (/). In cases in which it may be
desirable the gripper (f) may be made straight and be secured upon a block
secured in position upon the shaft or bar (h) in any suitable manner and in such
case the block (=) will serve only to cause the finger or guide (e) to move to and
fro in the direction indicated by the arrow (H) and in the opposite direction along
with the shaft or bar (h). The edge (2) of the projection (t¹) upon each of the
blocks (t) is made to form a segment of a circle the centre of which is in the axis
of the shaft or bar (h) in order that the adjustment of the sheet of paper upon the
platen (a) may not be interfered with by the turning of the shaft or bar (4) to
cause the gripper (f) to act upon the said sheet of paper which turning of the
shaft or bar (h) will take place after the guides (d) (d) and (e) have adjusted the
said sheet of paper into position.
It will be obvious from the accompanying drawings that by the guides or
fingers (d) (d) and (e) being mounted upon a rod capable of moving both laterally
and longitudinally and connected to a spring and provided with a bowl or roller
acting in conjunction with a cam surface similar to the cam-surface (m²) the adjust-
ment of the sheets of paper upon the platen may be accomplished by the guides
employed being all moved in one direction which is that of the resultant of the
longitudinal and lateral movements of the said rod and that in such an arrangement
one guide adapted to act upon two adjacent edges of each sheet of paper placed
upon the platen would suffice.
Although it is not shown in the accompanying drawings the platen (a) is covered
on the face which is directed towards the type with sheets of paper in the ordinary
manner so that the type may not be injured by being brought into contact with
the metal forming such platen (a). I would have it understood that in referring to
the adjustment of the sheets of paper being printed, in the direction of their height
and in the direction of their width I intend the dimensions of the sheets of paper in
the direction indicated by the arrow (G) to be taken as the height and I intend
the dimensions of the sheets of paper in the direction indicated by the arrow (H)
to be taken as the width whatever may be the position of the matter to be
printed upon such sheets of
paper.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed I declare that what I
claim is
1. In a platen printing machine in which the paper to be printed is placed by
the operator on the platen an adjustable guide or adjustable guides bearing against
the platen and moved by mechanism provided to act in conjunction therewith to
and fro in relation to the platen during the movements of the said platen for the
purpose of adjusting the sheets of paper placed upon the platen into the precise
position which they are required to occupy while being printed.
2. In a platen printing machine in which the paper to be printed is placed by
the operator on the platen the herein before described combination or arrangement
of mechanism consisting in adjustable guides (d) (d) and (e) moved to and fro in
relation to the platen of the printing machine and mechanism for moving such
guides during the movements of the platen substantially in the manner herein before
described and for the purpose of adjusting the sheets of paper placed upon the
platen into the precise positions which they are required to occupy while being
printed.
3. In a platen printing machine in which the paper to be printed is placed

page_text: by the operator on the platen, the hereinbefore described combination or
arrangement of mechanism consisting in an adjustable guide or adjustable
guides (d) (d) and (e) and a cam-surface (m³) and movable rods (i) (j) for causing
the required movements of the said guide or guides during the movements of the
platen substantially in the manner hereinbefore described and for the purpose of
adjusting the sheets of paper placed upon the platen into the precise positions which
they are required to occupy while being printed.
4. In a platen printing machine in which the paper to be printed is placed by the
operator on the platen, the hereinbefore described combination or arrangement of
mechanism consisting in adjustable guides (d) (d) and (c) and a cam-surface (m³),
movable rod () provided with inclined surface (u') and movable shaft or bar (4)
provided with projections (t) (¹) and employed arranged and operating to cause
the required movements of the said guides during the movements of the platen
substantially in the manner hereinbefore described in reference to Figs. 5 and 6
of the accompanying drawings and for the purpose of adjusting the sheets of paper
placed upon the platen into the precise position which they are required to occupy
while being printed.
Dated this Thirtieth day of November 1892.
HOWARD
CHEETHAM,
Manchester, Agent to the Applicant.