An Improved Duplex Writing Apparatus.
Year: 1889

page_text: Date of Application, 4th Nov., 1889
Complete Specification Left, 5th Aug., 1890-Accepted, 25th Oct., 1890
PROVISIONAL SPECIFICATION.
An Improved Duplex Writing Apparatus.
A communication to me from abroad by JOHANNES WERNER, of Mannheim, in the
Empire of Germany, Doctor-of-Law.
I, EDMUND EDWARDS, of the firm of Edwards and Co. Patent Agents and
Engineers, of 35 Southampton Buildings, Chancery Lane, in the County of
Middlesex do hereby declare the nature of this invention to be as follows :-
-
This invention relates to an improved writing apparatus, by means of which, and by.
the use of a pecular pen-holder holding two pens, any kind of writing, letters as well
as every other sort, may be performed in duplicate, whilst the writer does the work
only once.
By this means an identical and true copy is obtained during the operation of writing
and no mistake or deviation from the original can occur.
In all cases where written matter is required in duplicate, especially for offices,
law-courts, lawyers and the like, and where no more than one copy is required, the
improved apparatns which forms the subject of this invention will be of great
usefulness and importance.
The improved apparatus consists of a bed-plate to which a suitable sheet of paper is
secured, and at a higher level another sheet of paper is carried by a sliding frame in
such a manner, that by the use of a peculiar pen holder with two pens, the writer is
able to write simultaneously upon the two sheets, substantially in the same manner, as
if writing in the ordinary way upon one sheet.
The bed plate is carried by longitudinal flanged side bars its parallel sides projecting
over the outer edges of the said bars and in the groove formed between the said
projecting edges of the plate and the flange of the rails the angular sides of a sliding
frame are guided.
To the left side of the bed plate clamps are secured which serve to hold a writing
pad and the paper to be written upon.
At the top end of the bed plate a clamp is also secured by screws or other suitable
means. This holds the second sheet of paper and consists of two transverse plates
arranged end to end. and turning on pivots at their ends. These plates meet at the
centre and each of them has a slot at its back edge to engage with two inclined heels
or cains carried by a slide bar provided with a ring or handle at its outer end.
=
By drawing the said slide bar outward, the said plates are forced down by the cams
so as to clamp the sheet of paper and to hold it in position. The sheet of paper,
whilst so clamped is drawn through the sliding frame already described, by lifting the
top-plate of the said frame, the said top plate being pivoted on its front edge and
carrying a roller over and round which the paper passes and, being guided over a
semi-circular sheet metal plate returns below the pivoted clamp already described and
out of the apparatus, after which, the top plate with the roller is forced down upon
the guide plate and secured in its position by suitable clamps or bolts.
On beginning to write upon a blank sheet, the sliding frame is shifted into its
forward position. Its angular projecting sides guided below the edges of the bed
plate as first described, are provided with lateral projecting lugs, to which cords or
strings are attached, by means of which the sliding frame is shifted either forward or
backward. At the left hand side of the apparatus two sheaves with two circumferential
grooves are provided at or near the corners of the bars which support the bed plate
and at the right hand side similar sheaves each with one circumferential groove, are
arranged. An endless cord provided with a ring is passed round the lower grooves of
the two sheaves first mentioned, the said cord being secured to the left hand lug.of
the sliding frame. Another endless cord passes round the upper grooves of the first

page_text: sheaves and round the last described sheaves having one groove, the said cord being
attached to the right hand lug of the sliding frame.
It will be easily understood, then, that by moving the ring in one or the other
direction towards the upper or lower end of the apparatus, the sliding frame will be
carried along in the opposite direction to that of the ring.
As the writer proceeds in writing on the lower sheet, he will shift the ring after
each line is written in such a manner as to cause the sliding frame to gradually move
along to the lower end of the sheet, whereby the upper sheet is being unrolled
accordingly, and will be written upon by the other pen of the double pen holder the
upper sheet following at the same rate, whilst the lower sheet is being filled from top
to bottom.
The sheets, when completed may be easily removed and replaced by blanks.
Dated this 1th des
1000
COMPLETE SPECIFICATION.
An Improved Duplex Writing Apparatus.
A communication to me from abroad by JOHANNES WERNER, of Mannheim, in the
Empire of Germany, Doctor-of-Law.
I, EDMUND EDWARDS, of the firm of Edwards and Co., Patent Agents and
Engineers, of 35, Southampton Buildings, Chancery Lane, in the County of
Middlesex, 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, and accompanying drawings, that is to say :-
This invention relates to an improved apparatus by means of which and by the use
of a peculiar pen-holder holding two pens, any writing such as letters or any other
kind of writing may be produced in duplicate, while the writer only has to write it
once, By this means an identical and true copy is obtained during the operation of
writing and no mistake or deviation from the original can occur. In all cases where
written matter is required in duplicate, especially for offices law courts, attorneys, and
the like, and where not more than one copy is required, the improved apparatus will
be of great usefulness and importance.
In the accompanying drawings,
Figure 1 is a longitudinal vertical section through the improved apparatus,
Figures 2 and 3 are respectively, a side elevation and plan of the same,
Figure 4 is a longitudinal section through one part of the apparatus, upon an
enlarged scale,
Figure 5 is a longitudinal section through the same part with a sheet of paper in place,
Figures 6 and 7 are, respectively, an end elevation of the slide with the top or
clamp open and closed,
Figure 8 is a cross section through the slide frame, and
Figure 9 is a plan of a modification.
To the bed plate A of the apparatus a suitable sheet of paper is secured, and at a
higher level another sheet of paper is carried by a slide frame B in such a manner,
that by the use of a peculiar pen-holder provided with two pens, the writer is able to
write simultaneously on the two sheets, substantially in the same manner as in the
ordinary way on one sheet only.
The bed plate A, carried by longitudinal side bars C, projects with its parallel sides
over the supporting blocks of the said bars C and within the groove formed between
the said projecting edges of. the plate A and the flat portion of the rails C, the angular
sides E of the slide frame B are guided as shewn in Figure 8. To the left side D of
the bed plate A several clamps F are secured which serve to hold a writing pad and
the paper to be written upon.
At the top end of the bed plate A the clamp G is secured by screws or other suitable
means. The said clamp holds the second sheet of paper and consists of two plates or

page_text: tops Garranged to turn upon their pivots H. The said plates or tops meet at the
centre and each of them has a slot I at the back part to engage with two inclined
heels K carried by a slide bar provided with a ring or handle L at its outer end, as
shewn in Figures 3, 6, and 7. By drawing the said slide bar towards the outside, the
said tops Gare forced down to clamp the sheet of paper, as shown in Figure 5, and
so to hold the said sheet in position. The sheet of paper while being clamped by the
tops G', is drawn through the slide frame B, by lifting the top plate O of the said
frame, the said top plate being piyoted at N and carrying the roller M, Figure 4, the
paper passes round the said roller M and being guided over the semi-circular sheet
metal plate P, returns below the clamp G and out of the apparatus, as shown in
Figures 1 and 5, after which the top plate O with the roller M are forced down upon
the guide plate P and secured in position by suitable clamps or bolts, as at Q (as shewn,
in Figures 3 and 8).
On beginning to write upon a blank sheet the slide frame B is shifted into the
position shewn in Figures 4 and 5. The angular projecting sides of the slide frame B,
guided below the edges D of the bed plate A are provided with the lateral projecting
lugs R, Figure 8 to which cords are attached, by means of which the slide frame B is
shifted in one or the other direction. At the left side of the apparatus two sheaves or
pulleys S with two circumferential grooves are provided at or near the corners of the
supporting bars C, and at the right side similar sheaves Teach with one circumferential
groove are arranged. An endless cord V carrying a ring U is passed round the lower
grooves of the two sheaves S, the said cord V being secured to the left hand lug R of
the slide frame B.
Another endless cord W passes round the upper grooves of the sheaves S the said
cord being attached to the right hand lug R of the slide frame B. It will be easily
understood that on shifting the ring U in one or the other direction, towards the
upper or lower end of the apparatus, the slide frame B will be carried along in the
opposite direction to that of the ring U.
As the writer proceeds with the writing upon the lower sheet he will shift the
ring U in such a manner as to cause the slide frame B to gradually move along to
the lower end of the sheet, whereby the upper sheet is unrolled accordingly and will
be written upon by the other pen of the double pen-holder, the upper sheet following
at the same rate as the lower sheet is filled from top to bottom.
In the modification, Figure 9, two cords cross-wise running are used, each of these
cords being fastened above and below to rings on both sides of the slide framo B, and
each cord running round two opposite rollers, so that both cords cross one another in
the middle of the plate A, while the slide frame B receives a handle on one side, for
moving it up and down.
The sheets when completed may be easily removed and replaced by blank sheets.
Having now particularly described and ascertained the nature of the said inven-
tion, and in what manner the same is to be performed, I declare that what I
claim is :-
A duplex writing apparatus, having a bed plate A having a sheet of paper or other
suitable material attached to it, a clamp G holding a second sheet of paper or other
suitable material, a slide frame B, through which the said second sheet is passed,
sheaves or pullies S and T at or near the corners of the apparatus, cords V and W
passing round the said sheaves and attached to the slide frame B, which can be done
also by cords running crosswise, for the purpose of shifting the said slide frame at the
requisite rate as the writing proceeds, and a penholder holding two pens so as to
simultaneously write upon the two sheets of paper, substantially as and for the purpose
set forth and shewn in the drawings.
Dated this 5th day of August 1890.
EDWARDS & Co.,
Agents for the Applicant.