Improvements in Type Writing Machines.
Year: 1890

page_text: Date of Application, 15th Mar., 1890
Complete Specification Left, 12th Dec., 1890-Accepted, 7th Mar., 1891
PROVISIONAL SPECIFICATION.
Improvements in Type Writing Machines.
We, MICHAEL HEARN, Secretary to the English Type Writer, Limited, of
6, Birchin Lane, in the City of London, and MORGAN DONNE, Manager of the
Works of the said Company, do hereby declare the nature of this invention to be
as follows:
--
Our invention relates to improvements in that class of type writing machines in
respect of which several Letters Patent were granted to us dated the 16th day of
November 1885 No. 13976 the 8th day of December 1886 No. 16068 and the 26th
day of October 1888 No. 15403 and our present invention has for its object to
improve various details of construction but more especially to combine and arrange
the parts in such manner as to produce a compact simple and effective machine.
In carrying our invention into effect we fix the type pieces or blocks upon the
upper ends of type levers which are mounted upon axes of motion arranged in the
are of a circle and are at their lower ends slightly cranked or curved and spread
out or enlarged to form weighted heels in order to counterbalance and norinally
retain them in a position slightly reclining from a vertical plane at which point they
rest upon an india rubber cushion or buffer arranged within a hood or shield
partially encasing the type levers.
The type pieces or blocks are each formed with an elongated face upon which are
provided three distinct characters such as a small letter of the alphabet, a capital
letter and a numeral and each of these characters is capable of being brought into
use at the times desired.
The type levers are near to their heels formed with holes therethrough by means
of which they are threaded upon a wire bent into a semicircular form and which forms
their axes and this bent wire is clamped in a groove formed in one of the meeting
faces of two semicircular plates which are formed with radial open ended slots
within each of which a type lever is located and they are thus equally spaced
whilst the upper one of these slotted plates is formed with a vertical partition wall
between each slot in order to form a kind of comb to guide the type levers to the
printing point.
The type pieces from the centre of the arc towards each end are each fixed upon
its lever at such an angle as will cause it at the moment of giving its impression to
assume a position at right angles to the line of printing and in order that each type
piece may be guided truly to the printing point and steadied at the moment of giving
its impression we employ the following alignment device.
To the slotted segment of the type levers we attach one end of an arm at the side
and near to the other end of which is a bracket or bar upon which is fixed near to
the printing point a guide formed with two inclined faces between which the type
piece or block is received in its descent.
The inclined faces of the guide are formed upon a bar or bracket which is
formed on or attached to the projecting arm or bracket of the slotted segment and
is shaped somewhat in the form of a horseshoe with the heel towards the rear of
the machine so that a clear way is left between the inclined faces for the passage of
the type pieces or blocks whilst the type levers at their outer ends are bent or
curved in order to clear the alignment bracket.
By these means the type pieces will be guided to the printing point and there
held firmly during the printing operation whilst at the same time an unobstructed
view can be obtained of the printing to the rear of the alignment device immediately
that the impression has been given.
The ends of the type levers carrying the type blocks are impelled to the printing

page_text: point by means of corresponding key levers which are mounted in a comb in a
similar manner to that described with respect to the type levers and act upon the
weighted heels of the type levers to give the required impulse thereto and the key
levers are at their inner ends formed with hollows or depressions to receive the
curved weighted ends of the type levers and beyond such depressions with vertical
noses shaped to a point and such points are so located as to strike the type levers
near to their axes and thus produce a quick or sudden action of the type
e levers.
The outer ends of the key levers are fitted with keys arranged in two curved
rows for convenience of manipulation and these levers are held in their normal
position by means of the weighted ends of the type levers.
A. curved spacing bar is arranged beneath the key levers and is at its ends
mounted upon axes of motion located at the rear of the machine and normally
retained in its raised position by means of springs so that it is capable of being
depressed by any one of the key levers and it has fixed thereto near to its ends so
as to extend across the machine an escapement bar which is formed with ratchet
teeth upon its upper and lower edges and partakes of the up and down movements
of the spacing bar.
The paper carriage consists of a frame which is at its front mounted with
capability of sliding upon a bar which is carried by vertical arms rising from a rock
shaft and which arms are acted upon by springs to normally retain the carriage in
such a position that the paper will receive the impression of the ordinary small
typographical characters whilst the carriage at its rear is supported upon a castor
wheel which traverses a horizontal table and the carriage is thus adapted to receive
the necessary spacing or escapement movement and to be moved forward into
position for the paper to receive the impression of either the capitals or numerals
according to the extent of such movement.
This forward movement of the paper carriage is obtained by means of a lever
which is at one end fixed to the rock shaft and at the other end is spread out in
order that it may be acted upon by either one of two pistons one of which repre-
sents the capitals and is capable of being depressed a given distance whilst the
other represents the numerals and is capable of twice the amount of depression and
the paper carriage is thus through the rock shaft and vertical arms moved forward
the required distance.
The pistons are held in their raised or normal position by means of springs whilst
they are each provided with a projection or feather which normally travels in a
groove formed in a tubular fitting or guide but which in the depressed position of
the piston is capable by giving a partial revolution to the piston of being turned
into a slot or recess in order to hold such piston depressed when it is desired to
print a number of capitals or numerals in succession.
A broad spacer key adapted to act upon the curved spacing bar located imme-
diately in front of the type keys so that the spacing bar may be actuated thereby
when it is desired to leave spaces between words or sentences and in order that the
spacer may not be affected by the depression of the key levers we fix it to the ends
of arms or levers which are mounted upon centres of motion upon the framing and
normally sprung upwards and provided with short vertical standards formed with
horizontal arms adapted to engage the curved spacing bar in the downward motion
of the spacer but leaving such curved bar free to move independently thereof when
depressed by a key lever.
The paper carriage is traversed across the machine in one direction and during
the printing operation by means of a chain one end of which is attached to the
paper carriage and the other end of which is attached to a spring drum which exerts
a constant pull upon the paper carriage and the traverse of the carriage is controlled
by means of an escapement or spacing device which permits the paper carriage to
advance only the distance of one letter at each depression of a key.
The escapement device consists of the toothed bar hereinbefore referred to and
which is carried by the curved spacing bar and two broad pallets one of which
constantly remains in engagement with the escapement rack during the forward

page_text: and backward movements of the paper carriage. These pallets are carried by a
bracket from the paper carriage and are arranged one in advance of the other to
the extent of half a tooth of the escapement rack whilst the escapement rack is
normally held in engagement with the upper one of such pallets by the upward
tendency of the curved spacing bar.
By this arrangement of parts at every depression of a key lever or of the spacer
key the curved spacing bar will be depressed and the escapement rack will be
disengaged from the upper pallet and brought into engagement with the lower one
and upon the spacing lever returning to its normal position the reverse action will
take place and the carriage will thus be permitted to advance the distance of
one tooth of the escapement rack at every depression of a key lever or of the
spacer.
In order to disengage the upper pallet from the escapement rack and permit the
carriage to be freely traversed to and fro across the machine for the purpose of
adjusting the position of the sheet of paper being printed upon in relation to the
printing point or for starting a fresh line of printing we mount the upper pallet
upon an arm which is acted upon by a spring to hold the pallet in position to engage
the escapement rack and is fixed upon a shaft or spindle mounted in bearings
formed in the carriage frame and extending to the end thereof where it terminates
in an offset which is capable of being acted upon by the short arm of a bell crank
releasing lever also mounted on the carriage in order to partially rotate the shaft
and the upper pallet is thus disengaged from the escapement rack. The position of
the upper pallet in relation to the escapement rack is capable of regulation by means
of a set screw passing through a tapped hole in the carriage frame and at its end
bearing against the underside of the supporting arm of the pallet.
As the upper pallet is disengaged from the escapement rack generally in order
that the carriage may be run back to the starting point to commence a fresh line of
printing it is desirable at the same time to rotate the cylindrical platen the distance
of one line and thus bring a fresh surface of paper into alignment with the printing
point.
To attain this end we mount the cylindrical platen which is preferably a roller
covered with india rubber as is well understood with capability of revolution in
bearings formed in the framing of the carriage and we fix upon the end of such
cylindrical platen or roller a ratchet wheel with which engages a clawker or driver
which is held up to its work by a spring.
This clawker or driver is mounted with capability of oscillation upon a stud or
axis carried by one end of an arm or lever which at its other end is mounted upon
an axis of motion carried by the carriage frame and the arm or lever is acted upon
by the short arm of a bell crank lever to cause the clawker or driver to rotate the
cylindrical platen and in order to prevent the too free revolution of the cylindrical
platen and to enable the operator readily to know the extent to which it is being
moved a spring stop is caused to engage the recesses between the teeth of the
ratchet wheel and in rising and falling as it is displaced by the teeth of the ratchet
wheel this spring stop clearly gives the required indications.
The bell crank lever for rotating the platen and which we will call the platen
feed lever is mounted in bearings at the side of the pallet releasing lever so that the
same movement of the hand which is required to actuate the latter may also be
caused to actuate the former.
The sheet of
paper is held in contact with the cylindrical platen by means of two
semicircular spring bands or fingers which are at one end fixed to the frame of the
carriage and at the other end bear upon the platen with an elastic pressure near to
the printing line.
The paper is carried forward together with the platen as it is rotated by the
platen feed lever by means of two endless bands of india rubber which are passed
around two rollers mounted with capability of free revolution in bearings located at
opposite sides of the cylindrical platen the hands being thus held in frictional
contact with, so as to be driven by, the platen.

page_text: After passing the printing line the sheet of paper is carried under a bar which is
marked with a divided scale as is well understood and is held against the platen
with a light spring pressure and the sheet of paper is then received by a curling
guide consisting of three bars or rods coiled in the form of the outer coil or coils of
a flat helix and supported upon legs or posts removably fitting into holes provided
in the paper carriage for that purpose.
By means of this device the sheet of paper as it leaves the platen is curled or
rolled up with the printing inside the roll so that it may be left in the machine
without fear of the printing being read by a casual caller whilst at the same time
the paper is truly guided and the risk of its position being disarranged by the top
edge thereof coming into contact with an object upon the table of the operator is
avoided.
In order to give an audible indication when the paper carriage has traversed a
predetermined distance governing the length of the line of printing and to regulate
that point in the traverse of the paper carriage at which such audible indication will
be given we arrange around the upper side of the spring drum which is mounted
flush with the cover of the machine a circular scale graduated to correspond with
that upon the divided bar and we forin the drum with a circle of holes therethrough
to receive a loose pin which is adapted to pass right through the drum and project
from the lower side thereof.
Below and at the side of the spring drum is arranged a bell or gong and the
projecting end of the pin in the revolution of the drum is adapted to engage the
inclined nose of a haminer or striker which is fixed upon one end of a coiled spring
arm the other end of which is fixed to the main framing and thereby to sound the
bell or gong.
It will thus be seen that by placing the loose pin in any particular hole of the
circle the bell or gong may be caused to sound an alarm at any predetermined point
of the traverse of the paper carriage.
The ribbon spools instead of being mounted both upon inclined axes as heretofore
are arranged in the following manner.
The shafts or axes of the spools are fixed to a short standard carried by part of
the main framing immediately beneath the slotted segment and one of such shafts
or axes is arranged in a position parallel with the axis of the cylindrical platen and
so that the ribbon winding off such spool passes beneath the alignment device in a
direction at right angles to the axis of the platen it thence passes around an
angularly disposed bar carried by the arm or bracket of the slotted segment and it
then passes away in an angular direction to the other ribbon spool whose shaft or
axis is disposed at a corresponding angle.
By this arrangement of the ribbon spools the printing is less obscured by the
ribbon than when the axes of both spools are both arranged at an angle as
heretofore.
'
In order to give a step by step motion to the inking ribbon each spool has fixed
upon the inner side thereof a toothed wheel the wheel of that spool whose axis is
parallel with the paper carriage having simple spur teeth whilst the wheel of that
spool which is angularly mounted is provided with bevelled teeth.
Between these wheels and fixed upon a horizontal shaft disposed parallel to the
paper carriage and capable of endway and rotary motion is a ratchet wheel
which is driven by a pawl carried by an arm projecting from the escapement rack
and upon each side of such ratchet wheel and fixed thereto or formed thereon is a
pinion one of such pinions being formed with spur teeth to engage the corresponding
teeth of the wheel of one ribbon spool whilst the other of such pinions is formed
with spiral teeth to engage the bevelled teeth of the corresponding spool wheel but
such compound or shunt wheel is so arranged that only one of such pinions is
capable of engaging its spool wheel at a time according to which spool it is desired
to drive.
The shaft of the compound or shunt wheel is capable of receiving endway
movement in order to move the pinions into or out of gear with their respective

page_text: spool wheels or into a midway position out of gear with both and in order to
impart such endway movement thereto we employ a vertical spindle at one end
stepped in a bearing upon the main framing and at the other end rising through a
bearing formed in a bracket and projecting through the cover where it is provided
with a shunt handle and upon this spindle we fix a lever which at one end engages
a recess or projection in the shunt shaft and at the other end is formed with a nose
which engages one or other of three recesses or stops formed in a bar or block
which is held in contact therewith by a spring.
By turning the shunt handle to the right or left the nose of the lever may be
caused to engage either one of the recesses or stops of the spring block and by
moving end wise the shunt shaft cause the compound or shunt wheel to engage and
give motion to either of the ribbon spools according to which of them it is desired
to wind the ribbon upon whilst by placing the shunt handle in a central position
the nose of the lever will be caused to engage the central recess of the spring
block and the compound or shunt wheel will accordingly be held in a central
position so that no motion will be given to the ribbon spools and the ribbon may be
moved out of the way and the machine may then be employed to produce a stencil in
waxed paper as has heretofore been proposed. The shunt shaft extends to the side'
of the machine where it is provided with a crank handle by means of which it may
be rotated when desired.
According to a modification we fix the guide bar at the rear of the platen around
which the ribbon passes upon a lever or arm mounted upon a vertical axis and we
cause this arm or lever to be acted upon by a cam or other device attached to a
lever similar to that employed for the capitals and figures and provided with a
similar piston so that by depressing such piston the guide bar together with the
inking ribbon may be moved to one side in order to give a clear view of the last
one or two letters printed.
The type levers as hereinbefore described and the key levers are partially
enclosed by a cap or cover.
WHITE & WOODINGTON,
27, Southampton Buildings, London, W.C., Agents for the Applicants.
COMPLETE SPECIFICATION.
Improvements in Type Writing Machines.
We, MICHAEL HEARN, Secretary to the English Type Writer, Limited, of
6, Birchin Lane, in the City of London, and MORGAN DONNE, Manager of the
Works of the said Company, do hereby declare the nature of this invention, and in
what manner the same is to be performed, to be particularly deseribed. and
ascertained in and by the following statement :-
Our invention relates to improvements in that class of type writing machines in
respect of which several Letters Patent were granted to one of us dated the
16th day of November 1885 No. 13976, the 8th day of December 1886 No. 16068,
and to both of us dated the 26th day of October 1888 No. 15403, and our present
invention has for its object to improve various details of construction but more
especially to combine and arrange the parts in such manner as to produce a compact
simple and effective machine.
In carrying our invention into effect we fix the type pieces or blocks upon the
upper ends of type levers which are mounted upon axes of motion arranged in the
arc of a circle and are at their lower ends cranked or curved and spread out or
enlarged to form weighted heels in order to counterbalance and normally retain
them in a position slightly reclining from a vertical plane at which point they rest
upon an india rubber cushion or buffer arranged within a hood or shield partially
encasing the type levers.
The type pieces or blocks are each formed with an elongated face upon which

page_text: are provided three distinct characters such as a small letter of the alphabet a capital
letter and a numeral and each of these characters is capable of being brought into
use at the times desired.
The type levers are near to their heels formed with holes therein through which
is passed a wire bent into a semicircular form and which constitutes their axes, and
this bent wire is clamped in a groove formed in one of the meeting faces of two
semicircular plates which are formed with radial open ended slots within each of
which a type lever is located and they are thus equally spaced whilst the upper one
of these slotted plates is formed with a vertical partition wall between each slot in
order to form a kind of comb to guide the type levers to the printing point.
The type pieces from the centre of the arc towards each end are each fixed upon
its lever at such an angle as will cause it at the moment of giving its impression to
assume a position at right angles to the line of printing and in order that each type
piece may be guided truly to the printing point and steadied at the moment of
giving its impression we employ the following alignment device :--
To the slotted segment of the type levers we attach one end of an arm at the side
and near to the other end of which is a bracket or bar upon which is fixed near to
the printing point a guide formed with two inclined faces between which the type
piece or block is received in its descent.
The inclined faces of the guide are formed upon a bar or bracket which is formed
on or attached to the projecting arm or bracket of the slotted segment and is shaped
somewhat in the form of a horse shoe with the heel towards the rear of the machine
so that a clear way is left between the inclined faces for the passage of the type
pieces or blocks whilst the type levers at their outer ends are bent or curved in
order to clear the alignment bracket.
By these means the type pieces will be truly guided to the printing point and
there held firmly during the printing operation whilst at the same time an
unobstructed view can be obtained of the printing to the rear of the alignment
device immediately that the impression has been given.
The ends of the type levers carrying the type blocks are impelled to the printing
point by means of corresponding key levers which are mounted in a comb in a
similar manner to that described with respect to the type levers and act upon the
weighted heels of the type levers to give the required impulse thereto and the key
levers are at their inner ends formed with hollows or depressions to receive the
curved weighted ends of the type levers and beyond such depressions with vertical
noses shaped to a point and such points are so located as to strike the type levers
near to their axes and thus produce a quick or sudden action of the type levers.
The outer ends of the key levers are fitted with keys arranged in two curved
rows for convenience of manipulation and these levers are held in their normal
position by means of the weighted ends of the type levers.
A curved spacing bar is arranged beneath the key levers and is at its ends
mounted upon axes of motion located at the rear of the machine and normally
retained in its raised position by means of springs so that it is capable of being
depressed by any one of the key levers and it has fixed thereto near to its ends so
as to extend across the machine an escapement bar which is formed with ratchet
teeth upon its upper and lower edges and partakes of the up and down movements
of the spacing bar.
The paper carriage consists of a frame which is at its front mounted with
capability of sliding upon a bar which is carried by vertical arms rising from a
rock shaft and which arms are acted upon by springs to normally retain the carriage
in such a position that the paper will receive the impression of the ordinary small
typographical characters whilst the carriage at its rear is supported upon a caster
wheel which traverses a horizontal table, and the carriage is thus adapted to receive
the necessary spacing or escapement movement and to be moved forward into
position for the paper to receive the impression of either the capitals or numerals
according to the extent of such movement.
This forward movement of the paper carriage is obtained by means of a lever

page_text: which is at one end fixed to the rock shaft and at the other end is spread out in
order that it may be acted upon by either one of two pistons one of which represents
the capitals and is capable of being depressed a given distance whilst the other
represents the numerals and is capable of twice the amount of depression and the
paper carriage is thus through the rock shaft and vertical arms moved forward the
required distance.
The pistons are held in their raised or normal position by means of springs whilst
they are each provided with a projection or feather which normally travels in a
groove formed in a tubular fitting or guide but which in the depressed position of
the piston is capable by giving a partial revolution to the piston of being turned into
a slot or recess in order to hold such piston depressed when it is desired to print a
number of capitals or numerals in succession.
A broad spacer key adaped to act upon the curved spacing bar is located
immediately in front of the type keys so that the spacing bar may be actuated
thereby when it is desired to leave spaces between words or sentences and in order
that the spacer may not be affected by the depression of the key levers we fix it to
the ends of arins or levers which are mounted upon centres of motion upon the
framing and normally sprung upwards and provided with short vertical standards
formed with horizontal arms adapted to engage the curved spacing bar in the
downward motion of the spacer but leaving such curved bar free to move indepen-
dently thereof when depressed by a key lever.
The paper carriage is traversed across the machine in one direction and during
the printing operation by means of a chain one end of which is attached to the paper
carriage and the other end of which is attached to a spring drum which exerts a
constant pull upon the paper carriage and the traverse of the carriage is controlled
by means of an escapement or spacing device which permits the paper carriage to
advance only the distance of one letter at each depression of a key.
This escapement device consists of the toothed bar hereinbefore referred to and
which is carried by the curved spacing bar and two broad pallets one of which
constantly remains in engagement with the escapement rack during the forward and
backward movements of the paper carriage.
These pallets are carried by a bracket from the paper carriage and are arranged
one in advance of the other to the extent of half a tooth of the escapement rack
whilst the escapement rack is normally held in engagement with the upper one of
such pallets by the upward tendency of the curved spacing bar.
By this arrangement of parts at every depression of a key lever or of the spacer
key the curved spacing bar will be depressed and the escapement rack will be
disengaged from the upper pallet and brought into engagement with the lower one
and upon the spacing lever returning to its normal position the reverse action will
take place and the carriage will thus be permitted to advance the distance of one
tooth of the escapement rack at every depression of a key lever or of the spacer.
In order to disengage the upper pallet from the escapement rack and permit the
carriage to be freely traversed to and fro across the machine for the purpose of
adjusting the position of the sheet of paper being printed upon in relation to the
printing point or for starting a fresh line of printing we mount the upper pallet
upon an arm which is acted upon by a spring to hold the pallet in position to engage
the escapement rack and is fixed upon a shaft or spindle mounted in bearings formed
in the carriage frame and extending to the end thereof where it terminates in an
offset which is capable of being acted upon by the short arm of a bell crank releasing
lever also mounted on the carriage in order to partially rotate the shaft and the
upper pallet is thus disengaged from the escapement rack.
The position of the upper pallet in relation to the escapement rack is capable of
regulation by means of a set screw passing through a tapped hole in the carriage
frame and at its end bearing against the underside of the regulating arm of
the pallet.
As the upper pallet is disengaged from the escapement rack generally in order

page_text: that the carriage may be run back to the starting point to commence a fresh line of
printing it is desirable at the same time to rotate the cylindrical platen the distance
of one line and thus bring a fresh surface of paper into alignment with the printing
point.
To attain this end we mount the cylindrical platen which is preferably a roller
covered with india rubber as is well understood with capability of revolution in
bearings formed in the framing of the carriage and we fix upon the end of such
cylindrical platen or roller a ratchet wheel with which engages a clawker or driver
which is held up to its work by a spring.
This clawker or driver is mounted with capability of oscillation upon a stud or
axis carried by one end of an arm or lever which at its other end is mounted upon
an axis of motion carried by the carriage frame and the arm or lever is acted upon by
the short arm of a bell crank lever to cause the clawker or driver to rotate the
cylindrical platen and in order to prevent the too free revolution of the cylindrical
platen and to enable the operator readily to know the extent to which it is being
moved a spring stop is caused to engage the recesses between the teeth of the
ratchet wheel and in rising and falling as it is displaced by the teeth of the ratchet
wheel this spring stop clearly gives the required indication.
The bell crank lever for rotating the platen and which we will call the platen feed
lever is mounted in bearings at the side of the pallet releasing lever so that the.
same movement of the hand which is required to actuate the latter may also be
caused to actuate the former.
The sheet of paper is held in contact with the cylindrical platen by means of two
semicircular spring bands or fingers which are at one end fixed to the frame of the
carriage and at the other end bear upon the platen with an elastic pressure near to
the printing line.
The paper is carried forward together with the platen as it is rotated by the
platen feed lever by means of two endless bands of india rubber which are passed
around two rollers mounted with capability of free revolution in bearings located at
opposite sides of the cylindrical platen the bands being thus held in frictional.
contact with, so as to be driven by, the platen.
After passing the printing line the sheet of paper is carried under a bar which is
marked with a divided scale as is well understood and is held against the platen
with a light spring pressure and the sheet of paper is then received by a curling
guide consisting of three bars or rods coiled in the form of the outer coil or coils of
a flat helix and supported upon legs or posts removably fitting into holes provided
in the paper carriage for that purpose.
By means of this device the sheet of paper as it leaves the platen is curled or
rolled up with the printing inside the roll so that it may be left in the machine
without fear of the printing being read by a casual caller whilst at the same time
the paper is truly guided and the risk of its position being disarranged by the
top edge thereof coming into contact with an object upon the table of the operator
is avoided.
In order to give an audible indication when the paper carriage has traversed a
predetermined distance governing the length of the line of printing and to regulate
that point in the traverse of the paper carriage at which such audible indication
will be given we arrange around the upper side of the spring drum which is
mounted Hush with the cover of the machine a circular scale graduated to correspond
with that upon the divided bar and we form the drum with a circle of holes there-
through to receive a loose pin which is adapted to pass right through the drum and
project from the lower side thereof.
Below and at the side of the spring drum is arranged a bell or gong and the
projecting end of the pin in the revolution of the drum is adapted to engage the
inclined nose of a hammer or striker which is fixed upon one end of a coiled spring
arm the other end of which is fixed to the main framing, and thereby to sound the
bell or gong.

page_text: It will thus be seen that by placing the loose pin in any particular hole of the
circle the bell or gong may be caused to sound aù alarm at any predetermined point
of the traverse of the paper carriage.
The ribbon spools instead of being mounted both upon inclined or divergent axes
as heretofore are arranged in the following manner :-
The shafts or axes of the spools are fixed to a short standard carried by part of
the main framing immediately beneath the slotted segment and one of such shafts or
axes is arranged in a position parallel with the axis of the cylindrical platen and so
that the ribbon winding off such spool passes beneath the alignment device in a
direction at right angles to the axis of the platen it thence passes around an
angularly disposed bar carried by the arm or bracket of the slotted segment and it
theu passes away in an angular direction to the other ribbon spool whose shaft or
axis is disposed at a corresponding angle.
By this arrangement of the ribbon spools the printing is less obscured by the
ribbon than when the axes of both spools are both arranged at an angle as
heretofore.
In order to give a step by step motion to the inking ribbon each spool has fixed
upon the inner side thereof a toothed wheel, the wheel of that spool whose axis is
parallel with the paper carriage having simple spur teeth whilst the wheel of that
spool which is angularly mounted is provided with bevelled teeth.
Between these wheels and fixed upon a horizontal shaft disposed parallel to the
paper carriage and capable of endway and rotary motion is a ratchet wheel which
is driven by a pawl carried by an arm projecting from the escapement rack and
upon each side of such ratchet wheel and fixed thereto or formed thereon is a pinion
one of such pinions being formed with spur teeth to engage the corresponding teeth
of the wheel of one ribbon spool whilst the other of such pinions is formed with
spiral teeth to engage the bevelled teeth of the corresponding spool wheel but such
compound or shunt wheel is so arranged that only one of such pinions is capable of
engaging its spool wheel at a time according to which spool it is desired to
drive.
The shaft of the compound or shunt wheel is capable of receiving endway move-
ment in order to move the pinions into or out of gear with their respective spool
wheels or into a midway position out of gear with both and in order to impart such
endway movement thereto we employ a vertical spindle at one end stepped in a
bearing upon the main framing and at the other end rising through a bearing
formed in a bracket and projecting through the cover where it is provided with a
shunt handle and upon this spindle we fix a lever which at one end engages a recess
or projection in the shunt shaft and at the other end is formed with a nose which
engages one or other of three recesses or stops formed in a bar or block which is
held in contact therewith by a spring.
By turning the shunt handle to the right or left the nose of the lever may be
caused to engage either one of the recesses or stops of the spring block and by
moving end wise the shunt shaft cause the compound or shunt wheel to engage and
give motion to either of the ribbon spools according to which of them it is desired
to wind the ribbon upon whilst by placing the shunt handle in a central position the
nose of the lever will be caused to engage the central recess of the spring block and
the compound or shunt wheel will accordingly be held in a central position so that
no motion will be given to the ribbon spools, and the ribbon may be moved out of
the way and the machine may then be employed to produce a stencil in waxed paper
as has heretofore been proposed.
The shunt shaft extends to the side of the machine where it is provided with a
crank handle by means of which it may be rotated when desired.
The type levers as hereinbefore described and the key levers are partially enclosed
by a cap or cover.
And in order that the said invention may be more clearly understood and readily
carried into effect we will proceed aided by the accompanying drawings more fully
to describe the same.,

page_text: rest against an india rubber cushion or buffer b' arranged within a semicircular hood
or shield which forms part of the cap or cover and partially encases the type
levers c as shown more particularly at Figure 5.
The type pieces or blocks are cach formed with an elongated face upon which
are provided three distinct characters such as a small letter of the alphabet a capital
letter and a numeral as will be seen more clearly on reference to Figure 8 and each
of these characters is capable of being brought into use at the times desired as
hereinafter more fully described.
The type levers c are near to their heels c formed with holes therein through
which is passed a wire et bent into a semicircular form and which constitutes
their axes and this bent wire ct is clamped in a groove formed in one of the
meeting faces of two segmental or semicircular plates c which are clamped
together by means of screws c and are fixed upon a semicircular bar a³ supported.
upon posts a forming part of the framing a and the semicircular plates c are formed
with radial open ended slots c within each of which a type lever c is located and
they are thus equally spaced whilst the upper one of these slotted plates c is formed
with vertical partition walls c between each slot in order to form a kind of comb to
guide the type levers c to the printing point.
By these means the type levers may be readily and equally mounted in position.
whilst any one of them may be easily dismounted for repairs or other purposes
and replaced by another.
The type pieces or blocks c' from. the centre of the arc or semi-circle towards
each end thereof are each fixed upon its lever c at such an angle as will cause it at
the moment of giving its impression to assume a position at right angles to the line
of printing as will be readily understood upon reference to Figures 3 and 27 and in
order that each type piece c' may be guided truly to the printing point and
steadied at the moment of giving its impression we employ an alignment device
constructed as follows.
To the slotted segment c of the type levers c we fix one end of an arm c¹º upon
the side of which near to the printing point is formed a bracket or projection c
which is formed with an opening in the centre thereof somewhat in the form of a
horseshoe and at the rear of this opening c¹ a slot or passage ca is cut through the
bracket the walls of the slot or passage being formed with inclined faces constituting
a guide into which cach type piece or block e is received in its descent.
By the peculiar formation of the bracket or projection e a clear way is left
between and adjacent to the inclined walls of the slot ca for the passage of the type
pieces or blocks c' and in order to prevent the type levers c in. their descent coming
into contact with the bracket c" such levers c at their ends are slightly cranked or
bent for that purpose.
By these means the type pieces or blocks c¹ will be truly guided to the printing
point and there held firmly during the printing operation as shown more particularly
at Figures 27 and 30 whilst at the same time an unobstructed view can be obtained
of the printing at the rear of the alignment device immediately that the impression
has been given.
The ends of the type levers e carrying the type pieces, or blocks c are impelled
to the printing point by means of corresponding key levers d which are. mounted in
a comb or radially slotted segment in a somewhat similar manner to that described
with respect to the type levers that is to say they are formed with holes d' there-
through to receive a semi-circular wire which forms an axis common. to all and
this wire is received in a groove formed in one of two slotted plates or bars d
which are clamped together by means of screws and fixed to the framing at the key
levers being located and. working in the slots d' of the segment d³.
The key levers d act upon the weighted heels of the type levers c in order to give
the required impulse thereto and the key levers d are at their inner ends formed
with hollows or depressions d² to receive the corresponding curved weighted heels c
of the type levers c and beyond such hollows or depressions the key levers d are

page_text: formed with vertical noses shaped to a point and such points are so located as to
strike or act upon the type levers c near to their axes c and thus produce a quick
or sudden action of such levers c.
The outer ends of the key levers d are fitted with keys d' arranged in two curved
rows for convenience of manipulation and each marked with similar characters to
those
the face of the corresponding type piece or block c and the key levers d
arc held in and returned to their normal position by the weighted heels c² of the
type levers c.
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A curved spacing bar e is arranged immediately beneath the key levers d near to
their outer ends and this curved spacing bar e is continued to the rear of the machine
where it is mounted upon centres of motion e¹ carried by the framing a and is acted
upon by springs which normally retain it in its raised position immediately
beneath the key levers d and against a stop a' upon the frame a so that it is capable
of being depressed by any one of such levers and the curved spacing bar e has fixed
thereto near to its ends and so as to extend across the machine an escapement rack
bar e which is formed with ratchet teeth
upon its upper and lower edges and
partakes of the downward and upward movements of the spacing bar e.
et
The paper carriage consists of a frame which at its front is mounted with
capability of sliding upon a bar which is carried by vertical arms g' rising from
a rock shaft 2 at its ends mounted in bearings a carried by the framing a and
the arms are acted upon by springs g* at one end attached thereto and at the
other end attached to the framing a to normally retain the carriage and cylindrical
platen (hereinafter more fully referred to) in such a position that the paper
will receive the impression of the ordinary small typographical characters whilst
the carriage fat its rear is supported upon a caster wheel which traverses a
horizontal table a** carried by the framing a and the carriage is thus adapted to
receive the necessary spacing or escapement movements across the machine and to
be moved forward into position for the paper to receive the impression of either the
capitals or numerals according to the extent of such movement as indicated by the
dotted lines ay in Figures 5 and 26.
The forward movement of the paper carriage is obtained by means of a lever
which is at one end fixed to the rock shaft and at the other end is spread out or
formed with enlargements in order that it may be acted upon by either one of
two pistons the one of which represents the capitals and is capable of being
depressed a given distance whilst the other * represents the numerals and is
capable of twice the amount of depression and the paper carriage is thus
through the rock shaft 9 and vertical arms noved forward the required
distance.
The pistons are fitted with capability of vertical movement in tubular fittings
or guides fixed to the framing a and at their lower ends they are threaded to
receive nuts which act as stops to limit their upward movement and they are held
in their raised or normal position by means of springs hª which at one end are fixed
to the frame a and at the other end are formed with holes or slots therein to fit the
nuts whilst the pistons are each provided with a stud or projection 2 or it might
be a feather which normally travels in a vertical slot or groove ho formed in the
tubular fitting or guide /* shown more particularly at Figures 16 and 17 but which in
the depressed position of the piston / or /* is capable by giving a partial revolution to
the piston of being turned into a right angle slot or recess in order to hold such
piston depressed when it is desired to print a number of capitals or numerals in
succession.
h
It will be understood that in order to admit of the extra depression of the
piston the position of the stud or projection thereon must be arranged
accordingly.
A broad spacer key i adapted to act upon the curved spacing bar e is located
immediately in front of the type keys so that the curved spacing bar e may be
actuated without giving motion to the key levers d when it is desired to leave

page_text: spaces between words or sentences and in order that the spacer key i may not be
affected by the depression of the key levers d we fix it to the outer ends of
independent arms or levers (shown more clearly at Figure 6) which are near to
their inner ends mounted upon axes or centres of motion formed by screws
screwing into the frame a and beyond such axes the ends of the levers are acted
upon by a spring 3 to normally return the spacer key i in its raised position and the
levers are provided with short vertical standards formed with horizontal arms *
adapted to engage the curved spacing bar e in the downward motion of the spacer
key but leaving the curved spacing bare free to move independently thereof when
depressed by a key lever d.
The paper carriage is traversed across the machine in one direction and
during the printing operation by means of a chain one end of which is attached
to the paper carriage and the other end of which is attached to a spring
drum mounted with capability of revolution upon a vertical spindle fixed to
the framing and which drumj exerts a constant pull upon the paper carriage f
whilst the traverse of the paper carriage is controlled by means of an escape-
ment or spacing device which permits the paper carriage to advance only the
distance of one letter at each depression of a key d*.
This escapement device consists of the escapement rack bar hereinbefore
referred to and which is carried by the spacing bar e and two broad pallets 12 f³
the upper one 3 of which constantly remains in engagement with the corresponding
teeth e of the escapement rack bar e³ during the forward and backward movements
of the paper carriage controlled by the lever g3 and pistons / h*.
帝豪
The pallets are carried by a bracket or bar ** of the paper carriage f
and they are arranged one in advance of the other to the extent of half a tooth of
the escapement racks e e** whilst the escapement rack et is normally held in
engagement with the upper one of such pallets by the upward tendency of the
curved spacing bar e.
By this arrangement of parts at every depression of a key d or of the spacer
key i the curved spacing bar e will be depressed and the escapement rack e will be
disengaged from the upper pallet and brought into engagement with the lower one f²
and upon the spacing bar e rising and returning to its normal position the reverse
action will take place and the paper carriage will thus be permitted to advance
the distance of one tooth of the escapement racks at every depression of a
key d or of the spacer key i.
In order to disengage the upper pallet from the corresponding escapement racket
and permit the carriage to be freely traversed to and fro across the machine for the
purpose of adjusting the position of the sheet of paper being printed upon in
relation to the printing point or commencing a fresh line of printing we as shown
more particularly at Figures 18 to 22 mount or form the upper pallet upon an
arm which is acted upon by a spring to hold the pallet in position to engage
the escapement racket and is fixed upon a shaft or spindle mounted in bearings f
formed in the carriage frame and which shaft extends to the end of the carriage
frame where it terminates in an offset 8 which is capable of being acted upon by
the short arm f of a bell crank releasing lever 10 mounted upon an axis of
motion supported in a bracket from the carriage fin order to partially rotate
the shaft or spindle f and the upper pallet f' is thus disengaged from the corre-
sponding escapement rack e*.
The position of the upper pallet f³ in relation to the escapement rack e¹ is capable
of regulation by means of a set screw ** passing through a tapped hole in the
carriage frame and at its end bearing against the underside of the supporting
arm of the upper pallet f³.
As the upper pallet fis disengaged from the escapement rack e' generally in
order that the carriage may by traversed across the machine to the starting point
to commence a fresh line of printing it is desirable at the same time to rotate the
cylindrical platen 18 the distance of the space between two lines and thus bring a
fresh surface of paper into alignment with the printing point.

page_text: To attain this end we fix the cylindrical platen f" which is preferably a hard
wood or metal roller covered with india rubber as is well understood upon a shaft
or spindle which is at each end mounted with capability of revolution in
bearings formed in the framing of the carriage and we fix upon the shaft or
spindle at one end of the cylindrical platen fa ratchet wheel 16 with which
engages a clawker or driver f" which is held up to its work by a spring f 18.
The clawker or driver is mounted with capability of oscillation upon a stud or
axis carried by one end of an arm or lever which at its other end is mounted
upon an axis of motion carried by the carriage frame f and the arm or lever fx
is acted upon by the short arm of a bell crank leverf mounted upon an axis f
supported by the bracket f 12 to cause the clawker or driver f" to rotate the
cylindrical platen 13 and as the bell crank lever f³ for rotating the platen f" and
which we will call the platen feed lever is mounted parallel with the pallet releasing
lever f10 the same movement of the hand which is required to actuate the lever f
and to traverse the carriage across the machine may also be caused to actuate the
lever 10.
In order to prevent the too free revolution of the cylindrical platen 18 and to
enable the operator readily to know the extent to which it is being moved a spring
stop mounted upon the carriage frame is caused to engage the recesses between
the teeth of the ratchet wheel 18 and in rising and falling as it is displaced by such
teeth clearly gives the required indication.
The sheet of paper is held in contact with the cylindrical platen f" by means
. of two semicircular spring bands or fingers 24 which are at one end fixed to the
frame of the carriage and at the other end bear upon the platen ƒ near to the
printing line with an elastic pressure.
20
13
The paper w is passed over a table f*** and as shown at Figures 21 and 22 it is
carried forward together with the platen as it is rotated by the platen feed
lever by means of two endless bands ƒ of india rubber which are passed around
three rollers located around one side of the cylindrical platen 1 and mounted
with capability of free revolution in bearings formed in the carriage frame f
the bands being thus held in frictional contact with so as to be driven by the
platen f
BO
After passing the printing line the paper w is carried under a bar f which is
marked with a divided scale as is well understood and is fixed
upon the
upper ends
of arms which are at their lower ends mounted upon axes of motion carried
by the frame and acted upon by a spring" in order to hold the bar f against
the platen with a light spring pressure and as the sheet of paper w passes under
the bar it is received by a curling guide consisting of three bars f** coiled in the
form of a scroll or scrolls or the outer coil or coils of a flat helix and fixed upon. a
horizontal barsupported upon legs or posts f" removeably fitting into holes or
sockets formed in the carriage frame f
By means of this device the sheet of paper was it leaves the platen f" is curled
or rolled up in the form of a scroll with the printing inside so that it may be left in
the machine without fear of the printing being read by a person other than the
operator and such as a casual caller thus obviating the necessity for removing the
sheet from the machine in order to conceal the writing whilst at the same time
the paper is truly guided and the risk of its position being disarranged by the top
edge thereof coming into contact with an object upon the table of the operator is
avoided.
In order to give an audible indication when the paper carriage has traversed a
predetermined distance governing the length of the line of printing and to regulate
that point in the traverse of the paper carriage at which such audible indication
shall be given we arrange around the upper side of the spring drum ; and which is
mounted Hush with the cover of the machine so as to appear through a corresponding
aperture formed therein a circular scale graduated to correspond with that upon the
divided bar and we form the drum with a number of holes therethrough
arranged in a circle adjacent to the divided. scale and, corresponding with. certain.of.

page_text: the divisions thereof and we provide a loose pin which is adapted to fit into the
holes and pass through the drum j and project from the lower side thereof.
Below and at the side of the spring drum j and mounted upon a post fixed to
the frame a is arranged a bell or gong and at the side of the bell or gongis
located a hammer or striker which is fixed upon one end of a coiled spring arm the
other end of which is fixed to the frame a as shown more particularly at Figures 24
and 25 and the projecting lower end of the pin in the revolution of the drum is
adapted to act upon the nose of the hammer or striker and thereby to sound the
bell or gong j.
It will thus be seen that by placing the loose pin j in any given hole of the
circle the bell or gong may be caused to sound an alarm at any predetermined
point of the traverse of the paper carriage.
The spools carrying the inking ribbon instead of being mounted upon inclined or
divergent axes as heretofore are arranged in the following manner and as shown
more particularly at Figures 26 and 27.
18
The shafts or axes l'm' of the spools I m are screwed into tapped holes formed in
a short standard & fixed to the frame a immediately beneath the slotted segment c
and the shaft or axis is arranged in a position parallel with the axis of the platen
and so that the ribbon n winding off the spool passes over a guide bar o¹ formed
on a standard o fixed to the standard k thence beneath the alignment bracket c¹¹ in a
direction at right angles to the axis of the platen f¹³ the ribbon n thence passes
around an angularly disposed bar c formed on the arm or bracket cl⁰ of the slotted
segment and it then returns in an angular direction over the angular bar o' to
the other ribbon spool in whose shaft or axis m' is correspondingly disposed at right
angles to such direction.
By this arrangement of the spools m' the printing is less obscured by the
ribbon n than when the axes of both spools are arranged at equal angles to a line
drawn at right angles to the platen as heretofore.
In order to give a step by step motion to the inking ribbon n the spools / m² have
fixed upon the inner sides thereof toothed wheels m² the wheel having simple
spur teeth whilst the wheel m² is provided with bevelled teeth.
Between these wheels 12 m² and fixed upon a horizontal shaft p mounted in bear-
ings p✶ on the frame a and disposed parallel to the axis of the platen and capable
of endway and rotary motion is a broad ratchet wheel which is adapted to receive
a step by step motion at each depression of the spacing bare from a pawl carried
by a horizontal arm p³ fixed to the escapement rack bar e and upon each side of the
ratchet wheel p' and fixed thereto or formed thereon is a pinion one of such
pinions being formed with spur teeth to engage the corresponding teeth of the
wheel of the spool whilst the other p of such pinions is formed with angular or
spiral teeth to engage the bevelled teeth of the corresponding spool wheel m* but
such compound or shunt wheel p p p is so arranged that only one of such pinions ?*
or p at a time is capable of engaging its spool wheel or in² according to which
spool it is desired to drive.
U
The shaft of the compound or shunt wheel is capable of receiving endway
movement in order to move the pinions pt into or out of gear with their respective
spool wheels / m² or into a midway position out of gear with both and in order to
impart such end way movement thereto we employ a vertical spindle q at one end
stepped in a bearing g' formed on or fixed to the frame and at the other end rising
through a bearing formed in a bracket 2 fixed to the frame a and projecting
through the cover b where it is provided upon its extreme end with a shunt handle q
and upon this spindle y we fix a lever which at one end engages an annular
groove or recess p in the shunt shaft p and at the other end is formed with a nose
which engages one or other of three recesses or stops g' formed in one end of an arm q
which is at its other end mounted upon an axis of motion q carried by the frame a
and is acted upon by a spring y fixed to the frame a in order to hold the recessed
bar or plate 4 in engagement with the nose of the lever .
By turning the shunt handle q³ to the extreme right or left the nose of the lever q*

page_text: l
may be caused to engage either one of the recesses or stops 7 and by moving
endwise the shunt shaft cause one of the pinions of the compound or shunt
wheel to engage and give motion to either of the spools / or m through its toothed
wheel or m according to which of them it is desired to wind the ribbon n upon
whilst by placing the shunt handle in a central position the nose of the lever g
will be caused to engage the central one of the recesses or stops and the compound
or shunt wheel ppp will accordingly be held in a central position so that no
motion will be given to the ribbon spools 7 m and the ribbon n may be moved out of
the way and the machine may be employed to produce a stencil in waxed paper as
has heretofore been proposed.
l
The shunt shaft p extends to the side of the machine where it is provided with a
crank handle p** by means of which it may be rotated when it is desired to rotate
one or other of the ribbon spools I m without giving motion to the machine generally.
In our Provisional Specification we described a device by the aid of which the
inking ribbon could be momentarily moved to one side in order to give a clear view
of the last one or two letters printed but we have not found such device to be of
sufficient practical utility to render it desirable to make any claim thereto and we
have therefore omitted any further description thereof and we do hereby disclaim
such arrangement.
Having now particularly described and ascertained the nature of our said inven-
tion, and in what manner the same is to be performed, we declare that what we
claim is
1. The general combination and arrangement of parts constituting a type
writing machine substantially as-herein shown and described.
2. In a type writing machine a number of independent type levers e formed
with cranked weighted heels and mounted upon axes of motion arranged in the
arc of a circle and normally held in a vertical or approximately vertical position
by their own gravity and at their outer ends cranked or bent and furnished with
long type pieces in combination with an alignment device consisting of a bracket
or projection from an arm co and having an opening c to allow of the passage of
the type pieces and inclined walls to the narrow part of such opening the
bracket being located before the printing point and towards the front of the
machine so as to leave an unobstructed view of the printing to the rear of such
bracket substantially as herein shown and described.
3. In a type writing machine the combination of a number of independent type
levers c formed with cranked weighted heels and mounted upon an axis of
motion arranged in the arc of a circle in a comb or slotted segmented and
normally held in a vertical or approximately vertical position by their own gravity
and at their ends bent or cranked and furnished with long type pieces c¹ having
several characters upon the face thereof; an alignment device consisting of a
bracket or projection c" from an arm co and having an opening c" to allow of the
passage of the type pieces and inclined walls to the narrow part of such
opening the bracket e being located before the printing point so as to leave an
unobstructed view of the printing to the rear of such bracket and a number of key
levers & mounted upon axes of motion d'arranged in the arc of a circle in a comb
or slotted segment d to correspond with the type levers c such levers being
formed with recesses and noses at one end and keys d' at the other end
substantially as herein shown and described.
4. In a type writing machine the combination of a number of independent type
levers c formed with cranked weighted heels 2 and mounted upon axes of motion
arranged in the arc of a circle and normally held in a vertical or approximately
vertical position by their own gravity and at their ends furnished with long type
pieces having several characters upon the face thereof; a number of key levers d
mounted upon axes of motion arranged in the arc of a circle to correspond with the
type levers e and a cylindrical platen " mounted in a frame connected by arms g
and a rock shaft 9 with a lever adapted to receive a differential depression by

page_text: pistons h h in order to bring the platen 13 forward into position to receive the
impression of the capitals or numerals of the type pieces e substantially as hercin
shown and described.
5. In a type writing machine the combination of a number of independent type
levers formed with cranked weighted heels 2 and mounted upon an axis of
motion carranged in the arc of a circle in a comb or slotted segment cand
normally held in a vertical or approximately vertical position by their own gravity
and at their ends bent or cranked and furnished with long type pieces having
several characters upon the face thereof; an alignment device consisting of a
bracket or projection e" from an arm and having an opening to allow of the
passage of the type pieces and inclined walls to the narrow part of such
opening the bracket being located before the printing point so as to leave an
unobstructed view of the printing to the rear of such bracket; a number of key
levers & mounted upon axes of motion d arranged in the arc of a circle in a comb
or slotted segment to correspond with the type levers such levers d being
formed with recesses and noses d' at one end and keys d' at the other end and a
cylindrical platen 13 mounted in a frame connected by arms and a rock shaft g2
with a lever adapted to receive a differential depression by pistons in order
to bring the platen forward into position to receive the capitals or numerals of
the type pieces c' substantially as herein shown and described.
6. In a type writing machine the combination of the platen / mounted in a
frame; the arms : rock shaft g2 and lever g³; the pistons h h* capable of
differential depression and provided with studs and the tubular guides formed
with vertical and horizontal slots substantially as herein shown and described.
7. In a type writing machine the combination of a paper carriage a caster
wheel at the rear of such carriage; a table a* upon which the caster wheel
travels; a bar upon which the front of the carriage is mounted with capability
of sliding; arms connecting the bar with a rock shaft and a lever 3
fixed to the rock shaft substantially as herein shown and described.
8. In a type writing machine the combination of a curved spacing bar e
located beneath the key levers d and mounted upon axes of motion at the rear of
the machine; an escapement rack bar fixed to the spacing bar e and provided
with toothed racks e* *; a paper carriage at the rear supported upon a caster
wheel and at the front supported with capability of sliding upon a barg connected
by arms with a rock shaft o' to which is fixed a lever '; two broad pallets
attached to the carriage and adapted to alternately engage the racks e** e the
pallet being fixed and the pallet moveable; an arm mounted upon a
shaft and on which the pallet is formed; a spring to retain the pallet /³
normally in engagement with the rack e; an arm or offset 8 upon the shaft /; a
bell crank lever mounted upon the end of the carriage and adapted to partially
rotate the shaft and lift the pallet out of engagement with the racket and a
spring drum to draw the carriage forward substantially as herein shown and
described.
9. In a type writing machine the combination of a vertically moveable
escapement rack bar e; a paper carriage provided with broad pallets to engage
the teeth e e* of the rack bar; a shaft * connected with one of such pallets
and provided with an offset f; a bell crank lever 10 mounted upon the end
of the carriage and adapted to partially rotate the shaft and lift the pallet³
out of engagement with the rack a spring drum to draw the carriage
forward; a cylindrical platen 13 mounted upon the carriage with capability of
revolution; a ratchet wheel is fixed upon the platen
'16
13 a spring stop 16* to
regulate the movement of the platen and a clawker or driver "engaging the
wheel and actuated by a bell crank lever 3 mounted upon the end of the
carriage at the side of the lever 10 and adapted to actuate the clawker or driver
and rotate te platen substantially as herein shown and described.
23
10. In a type writing machine the combination of a paper carriage ; a
platen capable of revolution to carry the paper forward and a paper curier
ن

page_text: consisting of several bars ƒ coiled in the form of a scroll or flat helix and adapted
to receive the sheet of paper as it leaves the platen substantially as herein shown
and described.
11. In a type writing machine the combination of a paper carriage having a
bar provided with a divided scale; a spring drum connected with the carriage
by a chain and provided with a circular scale corresponding with that of the paper
carriage and formed with a ring of holes therethrough; a loose pin to fit
such heles; a bell or gong and a hammer or striker the latter fixed upon a
flexible arm and provided with a nose or projection adapted to engage the
lower end of the pin in the revolution of the drum substantially as herein
shown and described.
12. In a type writing machine the combination with a cylindrical platen 1
of two ribbon spools one mounted upon an axis parallel with the platen and the
other m mounted upon an axis at an angle to. the platen; a guide bar e carried
by the arm c⁰ and disposed at a corresponding angle to the spool m; a spur
wheel fixed to the spool ; a bevelled wheel m³ fixed to the spool m; a shaft p
mounted in bearings with capability of endway and rotary motion; a ratchet
wheel pl fixed upon such shaft a pawl p' engaging the ratchet wheel and carried
by an arm pa of the rack bar e³; a spur pinion p fixed upon the shaft p at one side
of the ratchet wheel p' and adapted to engage the spur wheel and a spiral
pinion p fixed upon the shaft p at the other side of the ratchet wheel p¹ and
adapted to engage the bevelled wheel m² and means for moving the shaft p endwise
substantially as herein shown and described.
13. In a type writing machine the combination of the two spools 1 m one mounted
upon an axis parallel to the platen and the other mounted at an angle thereto :
the spur wheel and bevelled wheel m² fixed upon the spools; the shaft p having
the corresponding wheels p p fixed thereon; a lever q' at one end engaging an
annular groove in the shaft p-and at the other end engaging the notches g of a
spring bar and a handle ³ to turn such lever and move the shaft p endwise
ubstantially as herein shown and described.
Dated this 12th day of December 1890.
WHITE & WOODINGTON,
27, Southampton Buildings, London, Agents.