Improvements in Machines for Printing from Stencils.
Year: 1895

page_text: Date of Application, 6th Apr., 1895
Complete Specification Left, 6th Jan., 1896-Accepted, 7th Mar., 1896
PROVISIONAL SPECIFICATION.
Improvements in Machines for Printing from Stencils.
I, JOHN JOFEH, of Station Road, Chingford, in the County of Essex,
Draughtsman, do hereby declare the nature of this invention to be as follows:-
This invention relates to an improved machine for printing from stencils produced
by any of the known processes, the object being to produce a machine which is
inexpensive to manufacture and which will produce copies in a rapid and more
reliable manner that at present obtains.
To this end my invention consists of a suitable frame adapted to hold the stencil
sheet and which is hinged at its lower side in a suitable fraine adapted to slide in
guides carried by a suitable main frame, the said guides being arranged slightly
out of the vertical so that the stencil frame lies by its own weight back in the
frame in which it is pivotted.
The frame carrying the stencil frame is adapted to fall by its own weight and to
be lifted by hand through the medium of.a web attached to its lower end either
directly or indirectly, and passing over a roller carried by the main frame of the
apparatus in close proximity to the rear face of the sliding frame. This web is
of a width equal to the width of the frame carrying the stencil and it is adapted to
lie or pass over a table conveniently mounted on the main frame in the rear of the
sliding frame. As a modification a spring roller may be mounted on the back edge
of the aforesaid table and the free end of the web be attached to the said spring
roller, so that the sliding frame would be lifted by the action of the spring roller
through the web, in which case the frame would be depressed by the pressure of
the hand of the operator.
During the downward stroke of the sliding frame, the rear face of the stencil
frame and therefore of the stencil-is in contact with the web, but as the frame
reaches the bottom of its stroke the stencil frame is rocked forward on its pivot by
a cam piece carried by the said frame coming into contact with some suitable part
of the main frame, and is held in its forward position with respect to the sliding
frame during the upward stroke by means of a spring finger engaging with its
rear side, which finger released automatically when the frame has reached the
top of its stroke.
'Fulcrated to the top part of the main frame of the apparatus is a frame carrying
a transverse axle on which is mounted the inking roller, and immediately in front
of this axle are mounted one or more ink distributing rollers. The frame carrying
the inking roller is so mounted that the roller lies by its own weight in contact
with the stencil sheet, but as the sliding frame reaches the bottom of its stroke the
frame carrying the said roller is rocked on its pivot through the medium of a
rearwardly extending arm and a flexible connection attached to the lower end of
the sliding frame to remove it from the face of the stencil. The inking roller is
prevented from coming back into contact with the stencil as the stencil franie rises
by means of a catch pivotted to the main frame of the apparatus and adapted to
engage either with the frame or axle carrying the inking roller, the said catch
being disengaged as the sliding frame reaches the top of its stroke by means of a
finger carried by the said sliding frame.

page_text: The paper is fed in between the rear face of the stencil and the web-the said
web affording a simple means of obtaining a perfect register-and it. drops out
automatically when the sliding frame reaches the bottom of its stroke.
Dated this 6th day of April 1895.
ROBERT E. PHILLIPS, Assoc. M. Inst. C.E., M.I. Mech. E.,
Consulting Engineer and Patent Agent,
70, Chancery Lane, London, W.C., Agent for the Applicant.
Improvements in machines for Printing from stencils.
I, JOHN JOFEH, of Station Road, Chingford, in the County of Essex,
Draughtsman, 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 an improved machine for printing from stencils produced
by any of the known processes, the object being to produce a machine which is
inexpensive to manufacture and which will produce copies in a rapid and more
reliable manner that at present obtains.
In the accompanying drawing which illustrates this invention :-
Figure 1 Sheet No. 1 is a view in side elevation.
Figure 2 Sheet No. 1 is a view in front elevation.
Figures 3, 4 and 5 Sheet No. 1 are broken views-on an enlarged scale-showing.
the device for holding the frame carrying the stencil in a forward position during
its up stroke.
Figure 6 Sheet No. 2 is. a broken view-on an enlarged scale-showing the
device for holding the inking roller clear of the stenci! on the up stroke of the frame
carrying the stencil frame.
Figure 7 Sheet No. 2 is a similar view showing a modification of the said
device, and
Figure 8 Sheet No. 2 is the same view as Figure 7 only showing the inking
roller in contact with the stencil, that is, printing.
Throughout the views similar parts are marked with like letters of reference.
The stencil sheet is carried in a suitable frame A hinged at its lower side in a
frame B adapted to slide in guides c, c, formed on or fixed to the main frame C, the
said guides being arranged slightly out of the vertical so that the stencil frame A
lies by its own weight back in the frame B to which it is pivotted at a.
'
The frame B is adapted to fall by its own weight and to be lifted by hand
through the medium of a web D attached to its lower end either directly or
indirectly, and passing over a pair of rollers E and E' the latter carried by an
auxiliary frame C¹ pivotted or otherwise attached to the main frame C in close
proximity to the rear face of the sliding frame B. The web D is of a width equal
to the width of the frame A and it is adapted to receive and carry the sheets of
paper to be printed on. The frame C is fixed in its position for use by means of
a strut such as c¹. As a modification a spring roller may be substituted for the
rear roller E and the free end of the web D be attached thereto, so that the
sliding frame B would be lifted by its action, in which case the said frame would
be depressed by the pressure of the hand of the operator.
During the downward stroke of the sliding frame B the rear face of the stencil
frame A and therefore of the stencil it carries-is in contact with the web D,
but as the frame reaches the bottom of its stroke the stencil frame is rocked
forward on its pivot by a cam piece 6 formed or mounted on the stencil frame A
coming into contact with the roller E or with some convenient part of the main
frame C, and it is held in its forward position with respect to the frame B during
.:

page_text: the upward stroke by means of a spring finger F pivotted on the frame B and
engaging with a pin or stud b' on the stencil frame A, the said finger being released
automatically when the frame B has reached the top of its stroke by reason of its
curved end coming into engagement with a projection 2 on the frame C.
Pivotted to the top part of the main frame C is a frame G carrying a transverse
axle g on which is mounted the inking roller H, and immediately in front of this
axle are mounted one or more ink distributing rollers J mounted on axles carried
by a suitable frame G¹. The frame G is so pivotted to the main frame C that the
roller H lies by its own weight in contact with the stencil sheet, but if desired a
spring may also be used to increase the pressure. As the sliding frame B reaches
the bottom of its stroke, the frame G carrying the roller H is rocked on its pivot,
to remove the said roller from the face of the stencil, through the medium of a
rearwardly extending arm G' and a chain K or other suitable flexible connection
attached to the lower end of the sliding frame B.
The inking roller H is prevented from coming back into contact with the stencil
as the stencil frame A rises by means of a catch L pivotted to the main frame A
and adapted to engage with a pin or roller mounted on the frame G', the said
catch being disengaged as the sliding frame B reaches the top of its stroke by
means of a finger M carried by the said frame.
The paper to be printed on is laid on the web D and is carried in between the
rear face of the stencil and the roller E by the travel of the said web, and it drops
out automatically when the sliding frame reaches the bottom of its stroke.
As a modification the catch L may be disengaged as the sliding frame B com-
mences its downward stroke, in which case the free end of the finger is formed as
a hook m as shown by Figures 1, 2 and 7, the said finger being pivotted to the
sliding frame and kept in a position to engage with the catch L by means of a
balance weight m¹ or its equivalent.
To allow the sheet of paper that has been printed on to fall away from the web
when the sliding frame reaches the bottom of its stroke, the said web is flicked by
means of an arm N forming part of a lever N' pivotted to the main frame and
adapted to be rocked on its hinge by the sliding frame B coming into contact with
its end n as the said frame reaches the bottom of its stroke.
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.) The improved machine for printing from stencils or the like, substantially
as hereinbefore described and illustrated by the accompanying drawing.
(2.) An apparatus for printing from stencils and the like consisting essentially
of a reciprocating frame adapted to carry the stencil, of a receiving web adapted
to receive the sheet of paper and to guide and carry it against the stencil, and of
one or more inking rollers, as set forth.
(3.) An apparatus for printing from stencils consisting essentially of a
reciprocating frame adapted to carry the stencil, of a web to carry the sheets of
paper attached to the said sliding frame and adapted to be operated either by a
spring roller or by hand, of one or more inking rollers, of a device for throwing
and holding the frame carrying the stencil in a forward position during its upstroke,
of a device for holding the inking roller or rollers clear of the stencil during the
upstroke of the frame carrying the stencil, and of a device for releasing the ink
roller or rollers, all combined arranged and operating, as and for the purpose
set forth.
(4.) An apparatus for printing from stencils consisting essentially of a frame
such as A adapted to carry the stencil and pivotted to and carried by a reciprocating
frame such as B, of a web such as D for carrying the sheets of paper its bottom
edge being attached directly or indirectly to the lower edge of the reciprocating
frame and its opposite free edge being adapted either to be operated by hand or to
be fastened to a spring roller, of one or more inking rollers H, J, of a roller such

page_text: as El carried in a fixed bearing, of the device for throwing and holding the frame
carrying the stencil in a forward position during its up or non-printing stroke, of
the device for holding the inking roller or rollers clear of the stencil during the
up or non-printing stroke, of the device for releasing the ink roller or rollers, and
of the device for "flicking" the web D on its down or printing stroke so as to
ensure the sheet of paper leaving the web after being printed upon, all combined
arranged and operating as and for the purpose set forth.
Dated the T
1000
ROBERT E. PHILLIPS, Assoc. M. Inst. E., M.I. Mech. E.,
Consulting Engineer and Patent Agent,
70, Chancery Lane, London, W.C., Agent for the Applicant.