IMPROVEMENTS IN TYPE WRITING AND MATRIX MAKING MACHINE
Year: 1885

page_text: I MERRITT HENRY DEMENT of First Avenue Hotel Holborn London Gentleman
do hereby declare the nature of my invention for "IMPROVEMENTS IN TYPE
WRITING AND MATRIX MAKING MACHINE" to be as follows:-
My invention relates to the art of printing and consists of certain improve-
ments in type writing machines in respect of their mechanism for feeding the paper
printed upon.
The machine to which the improvements more particularly relate has already
been patented to me as N° 1071884 and may be said, in brief to consist of a
revolving cylinder provided with a series of longitudinal rods and a type ring
revolving in unison therewith; the paper to be printed upon passing through the
upper portion of a printing lever, which lies between the cylinder and type ring.
In the inner end of the lever and between the paper and the cylinder a small wheel
is journalled which is shown in the Patent before mentioned as adapted to move
only when the paper is pressed upon the type.
I now desire to improve the operation of this small wheel by causing it to con-
tinuously revolve. This I accomplish by securing the small wheel to its shaft,
either by keying or driving it on and placing upon one end of the shaft a small
gear wheel and by the side of the type a large gear wheel in such relation as to
size as that when the two are intermeshed closely in motion the small wheel will
move upon its surface at substantially the same rate of speed as the surfaces of the
types move; the gear teeth being cut deep enough to permit the smaller gear wheel
to move up and down for a short distance, something less than one thirty second
of an inch without being disconnected from the larger gear wheel. Then for the
purpose of grasping the paper to pull or feed it when printing I place at the side
of the row of type a milled ring or by the side of each type sharp points or milling
adapted to penetrate the paper when the paper shall be pressed upon it by the lever
and upon the corresponding end of the small wheel; I form milling to correspond
with the milling by the side of the types, the operation being that when the paper
is pressed upward by the lever it is caught between the milling on either side
which grasps it with sufficient firmness to carry it along simultaneously with and
during the action of printing.
When more than one row of type is used and the printing lever is required to be
shiftable so as to operate upon the various rows the upper or larger gear wheel is
made of sufficient width to permit the smaller gear wheel to be shifted across its
surface and be operated by it when the printing lever is in position for any desired
row of types.

page_text: I, MERRITT HENRY DEMENT of First Avenue Hotel, Holborn, London Gentleman
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 the art of printing and consists of certain improvements
in type writing machines in respect of their mechanism for feeding the paper
printed upon.
The machine to which the improvements more particularly relate has already
been patented to me as N° 10718 and may be said, in brief, to consist of a
revolving cylinder provided with a series of longitudinal rods and a type ring
revolving in unison therewith; the paper to be printed upon passing through the
upper portion of a printing lever which lies between the cylinder and type ring.
In the inner end of the lever and between the paper and the cylinder a small wheel
is journalled which is shown in the Patent before mentioned as adapted to move
only when the paper is pressed upon the type.
I now desire to improve the operation of this small wheel by causing it to con-
tinuously revolve. This I accomplish by securing the small wheel to its shaft,
either by keying or driving it on and placing upon one end of the shaft a small
gear wheel and by the side of the type a large gear wheel in such relation as to
size as that when the two are intermeshed closely in motion the small wheel will
move upon its surface at substantially the same rate of speed as the surfaces of the
types move; the gear teeth being cut deep enough to perinit the smaller gear wheel
to move up and down for a short distance, something less than one thirty second
of an inch without being disconnected from the larger gear wheel. Then for the
purpose of grasping the paper to pull or feed it when printing I place at the side
of the row of type a milled ring or by the side of each type sharp points or milling
adapted to penetrate the paper when the paper shall be pressed upon it by the lever
and upon the corresponding end of the small wheel, I forum milling to correspond
with the milling by the side of the types; the operation being that when the paper
is pressed upward by the lever it is caught between the milling on either side which
grasps it with sufficient firmness to carry it along simultaneously with and during
the action of printing.
When more than one row of type is used and the printing lever is required to be
shiftable so as to operate upon the various rows the upper or larger gear wheel is
made of sufficient width to permit the smaller gear wheel to be shifted across its
surface and be operated by it when the printing lever is in position for any desired
row of types.
In order that my said invention may be most fully understood and readily carried
into effect I will proceed to describe the drawings hereunto annexed.
DESCRIPTION OF THE DRAWINGS.

page_text: a is the cylinder provided with rods operated by finger keys, but these keys and
rods are not shown, they remain as described in my former specification.-b is the
type ring, the face of the type coincides with the outer circle seen in Figure 1.
There may be two or more such circles of type upon the type ring, say one circle
capitals another small letters and if desired there may be a third circle italics.
c is the slide on which the printing lever is carried it can move end wise the distance
to carry the printing lever from one circle of type to another. In machines in'
which one type ring only is used this slide is not required. d is the printing lever,
it has its fulcrum at d¹. d² is a projection secured to the under side of the lever,
it is with this projection that the rods of the cylinder a come into contact when
they are caused to project by the finger keys; they then lift the lever slightly
towards the type ring and the tape of paper on the printing lever is brought into
contact with the type. The length of the contact depends on the width of the
acting extremity of the sliding bar projected from the cylinder a and this is made
suitable to the breadth of the type to which the bar corresponds. e is a spring
tending to remove the printing lever from the type ring. f is a stop screw limiting
the play of the printing lever.
The printing lever carries the small roller d³ and this has on its axis the small
pinion which remains always in gear with the teeth 61 upon the type ring not-
withstanding the movement of the printing lever to and fro.
The breadth of the toothed ring b' is such that the teeth remain in gear whilst
the slide c carries the printing lever laterally from one circle of type to another.
The part of the printing lever which carries the axis of the roller d³ can be
moved end wise for the purpose of adjustment upon the lower part of the lever, it
is set and locked in place by the screws do and d. This adjustment regulates the
distance of the roller d³ from the type ring the under-side of the part d' and the
surface beneath it being inclined. ds and do are guides upon the top of the printing
lever to control the narrow and continuous paper tape on which the printing is
executed; it passes beneath these guides and over the top of the roller d³. On the
roller d³ is a slightly projecting flange d³x and this is finely milled or roughened
on its periphery like the edge of a coin.
The dotted circle 62 indicates a similar flange on the type ring which also is
milled to correspond with the milling on the flange d³×.
It will thus be seen that the roller d³ which supports the tape of paper whilst it
is printed is driven continuously at a surface speed approximately the same as that
at which the type travel but except when printing it does not give motion to the
paper, the paper not being held against it with a sufficient pressure; but when the
printing lever is raised for printing the paper becomes nipped between the milled
rings ³× and 2 and it is advanced a distance accurately proportional to the
interval during which the printing lever remains supported by the sliding rod
of the cylinder a; accurate spacing of the letters printed on the paper is thus
ensured. There is a separate milled flange b2 for each of the circles of type
employed.
My improvements apply also where the type in place of applying ink to a strip
of paper are caused to indent the surface of a strip in such a manner that a printing
surface may be cast or produced from it.
Having now particularly described and ascertained the nature of my said
invention and in what manner. the same is to be performed I declare that what
I claim is
(1.) My improvements in type writing and matrix making machines consisting
in causing the roller which applies the strip to the type to be driven continuously
to move at approximately the same speed as the type and in causing the strip to
be held at the time of printing between parts on the roller and parts other than
the type and adjacent to them by which means the movement of the strip at the
proper speed and for the proper distance is effectually secured.

page_text: (2.
My improvements in type writing and matrix making machines consisting
in gearing the roller which applies the strip to the type with the type ring by
toothed wheels and in providing milled surfaces upon these moving parts between
which the strip is held at the time of printing.
(3.) My improvements in type writing and matrix making machines substantially
as described and shown by the annexed drawings.