Improvements in Type-writing Machines.
Year: 1897

page_text: Date of Application, 26th Feb., 1897-Accepted, 24th Apr., 1897
COMPLETE SPECIFICATION.
Improvements in Type-writing Machines.
I, RICHARD WILLIAM UHLIG of College Point, in the County of Queens,
State of New York in the United States of America, Inventor, do hereby
declare the nature of this invention and in what manner the saine is to be
performed, to be particularly described and ascertained in and by the following
statement :-
My invention relates to an improvement in type writing machines and more
particularly to such as employ type wheels, one object of the invention being to so
construct a type-writing machine that it shall be simple, durable and readily
portable.
A further object is to so construct a type writing machine that it shall comprise
a minimum number of parts co-operating on true mechanical principles to
effectually and accurately perform all the functions required of modern machines
of this class.
A further object is to obviate the use of an independent lock for the type wheel
and to so construct parts of the operating mechanism that they will serve, by
wedging action, to hold the type-wheel in the position to which it may be set by
the operation of a key.
A further object is to so construct the machine that the type wheel will be heldi
firmly in its normal position and so that the operation of any type key will effect.
the release of the type wheel, move the latter to writing position and securely hold
it in such position, operate the dogs of the carriage feed mechanism; put tension
on the hammer spring; release the hammer and operate the ribbon feed
mechanism.
A further object is to provide simple and efficient means whereby to obviate any
possibility of the type wheel slipping or moving in any manner after having been
set by the operation of a key lever, until the impression has been made on the
paper and the key released by the operator.
A further object is to provide a simple and efficient carriage feeding
mechanism.
A further object is to so construct the machine that should the alignment
become imperfect from any cause, it can be readily and quickly remedied by
an inexperienced person and the necessity of employing an expert mechanic
obviated.
A further object is to provide simple appliances for operating the dogs of the
carriage feed for effecting the movements of the carriage for spacing and for
releasing the carriage.
A further object is to so construct the machine that any lost motion or play which
might occur in the type wheel operating mechanism, can be readily taken up or
compensated for.
A further object is to construct the machine in such manner that a complete
rotation of the type wheel can be effected by the operation of key levers which
mark the segment of a circle.
A further object is to so construct the operating mechanism for effecting the
rotation of the type wheel, that the movement of the key levers shall be reduced to
a minimum.
A further obiect is to provide a simple and efficient margiu stop.

page_text: construct the machine that it will effectually perform its functions.
With these objects in view the invention consists in certain novel and simple
features of construction and combinations and arrangements of parts as hereinafter
set forth and pointed out in the claims.
In the accompanying drawings;
Figure 1 is a plan view of my improved type writing machine with the top plate
removed.
Figure 2 is a bottom plan view.
Figure 3 is a sectional view.
Figure 4 is a plan view of a portion of the machine, with the top plate partly
broken away.
Figure 5 is a section on line x-x of Figure 1.
Figures 6 and 7 are end views showing the carriage.
Figures 8 and 9 are detail views.
A represents a framework made in a single casting and comprising a segmental
front portion for the reception and support of the key board and portions of the
operating mechanism and a rear elongated portion 2 for the reception of the
carriage.
The front portion of the frame is made with segmental notched flanges 3, 4, for
the reception and guidance of key levers 5, which latter terminate a short distance
inwardly from the notched, segmental flange 4 and the top of the part 1 of the
frame is made with slots or recesses in line with the notches in the flanges 3, 4, for
the reception of the key levers. The top of part 1 of the frame is also made with
three segmental grooves a, b, c, for the reception of the pivot pins e of the key
levers, the latter being arranged in three sets of varying lengths, the fulcrums of
the shorter levers being set in the groove c; the fulcrums of the longest levers
being set in the groove a and the fulcrums of the key levers of intermediate length
being set in the intermediate groove b. The key levers are provided with the
usual buttons or keys 6 and the forward end of each of said key levers is made
with a cam face 7, a shoulder 8, and a hook 9 for purposes hereinafter more fully
explained. Each key lever is maintained normally in and returned to its normal
position by means of small coiled springs 10.
By reference to Figure 1 of the drawing, it will be seen that the forward ends of
the key levers mark the segment of a circle, at the respective ends of which, vertical
shafts 11 are mounted in suitable bearings in the frame. A post 12 is located on
the frame A at a point centrally between the shafts 11 and on this post, a pinion 13
is loosely mounted and has secured to it, a toothed segment 14 to mesh with an
elongated pinion 15 carried by the hollow shank 16 of the type wheel B, said type
wheel and its shank being loosely mounted on a vertical spindle 17 secured to the
frame.
Arms or levers 18 are secured to the respective shafts 11 and project toward
each other beyond the pinion 13, the free euds of said arms or levers being made
with rock bars 19 projecting therefrom practically at right angles and meshing
with the pinion 13 at opposite sides thereof. Another toothed segment 20 adapted.
to mesh with the elongated pinion 15 of the type wheel, is loosely mounted on the
post 12 entirely independent of the toothed segment 14 and pinion 13 and provi.led
with arms 21, said segment 20 and its arms 21 constituting what is known in
machines of this class as the "flyer," for stopping the type wheel at the proper
place when a key is depressed. The key levers are divided into two groups, one
group adapted to rotate the type wheel in one direction and the other group
adapted to effect the reverse rotation of said type wheel, the extreme keys of each
group (which, in this machine are located in the centre of the key board), being

page_text: adapted to cause a half revolution in one direction or the other. To accomplish
these results, I employ, in conjunction with appliances above described, two
levers 22, 23, which may, for convenience, be termed "type wheel operating levers."
The levers 22, 23, are secured to the shafts 11 (or they may be made integral with
the arms or levers 18) and project toward each other, marking, when in their
normal positions, the segment of a circle coincident with the segment marked by
the inner ends of the key levers. The levers 22, 23, the gearing with which they
are connected and the type wheel, are maintained normally in and returned to their
normal position, by means of a single bow spring 24°, the ends of which have
movable bearings against the arms or levers 18, and the intermediate portions of
said spring bearing against the levers 22, 23.
As above explained, the ends of the key levers are made with cam faces and
these cam faces are so made that the various key levers of each group will cause
the lever 22 or 23 to be moved a different distance, so as to cause the type wheel
to revolve a sufficient extent to bring a particular letter to writing position. As
the type wheel is turned in one direction by the operation of one group of keys and
in the reverse direction by the operation of the other group of keys, it is apparent
that each key lever of one group is adapted to move its co-operating lever 22 a
different distance, and that the key levers of the other group at the other side of
the machine have their cam ends similarly arranged to move the co-operating
lever 23 different distances according to the key being operated and the consequent
amount of rotation of the type wheel necessary to bring the proper letter into
writing position.
From the construction and arrangement of parts above described it will be seen
that when a key of one group is depressed, the cam end of the key lever will
engage one of the levers 22 and force it forwardly, thus turning the shaft 11 to
which it is connected and causing one of the arms 18 to move in a small are of a
circle whereby to transmit motion to the pinion 13, through the medium of the
small rack bar 19 carried by said arm or lever 18.. The pinion 13 being thus
turned, motion will be transmitted by the toothed segment 14 to the elongated
pinion 15 of the type wheel, thus turning the latter to bring the desired type into
writing position. When the type wheel pinion 15 is thus rotated, motion will be
imparted by it to the flyer, to cause the latter to turn in a direction opposite to
that of the type wheel, until one of the arms of said flyer engages the key lever
which has been operated, and by said key lever the movement of the flyer will be
arrested, thus stopping the operation of the mechanism which actuated the type
wheel and bringing the latter to rest with the proper letter in position for writing.
When a key lever is operated as above explained, motion is positively transmitted
by one of the small rack bars 19 to the pinion 13, but as both rack bars are
constantly in mesh with said pinion, the other rack bar will receive motion froin
the pinion 13 and thus the other arm or lever 18 will be moved, and cause the
lever 23 to be moved over the forward ends of some of the key levers, there being
ample space within the notched flange 4 to permit such movement of the levers 23.
It will of course be understood that when a key lever of the group adjacent to the
lever 23 is operated, said lever will be moved; motion will be transmitted in the
opposite direction to the type wheel and the lever 22 will project over the cuds of
key levers of the other group.
Both rack bars 19 are constantly in mesh with the pinion 13, regardless of what
key lever is operated and neither is ever disengaged from said pinion to permit the
operation of a key of one group or the other. This positive and continuous
connection of both sets of type wheel operating devices with the type wheel, is a
matter of importance and is permitted by the construction allowing the outward
movement of the levers 22, 23, over the ends of some of the key levers and by
mounting the flyer loosely and independently of the pinions 13. By such construc-
tion 1 am enabled to dispense entirely with the employment of an independent lock
commonly used on machines of the class to which my invention relates, which locks
have caused more or less annoyance on account of becoming worn and failing to

page_text: hold the type wheel rigid when set in position for writing. It is apparent from the
construction and arrangement of the mechanism above described that when a key
is depressed, the rack bars 19 meshing with the pinion 13 move in opposite
directions aud that when their movements are stopped by the engagement of an
arm of the flyer with the key lever which has been operated, any further pressure -
exerted on the key lever will tend to cause teeth of the respective rack bars to
impinge in opposite directions against tecth of the pinion 13, but as said pinion
cannot now rotate, the gearing becomes wedged within itself and this prevents any
possible movement in any direction of the type wheel, until the key lever shall
have been released by the operator.
When a key is depressed by the operator, the upward movement of its forward
or cam end will be limited by the engagement of the shoulder 8 with the adjacent
type wheel operating lever 22 or 23. Should the parts of the type wheel-operating-
mechanism become worn so that upon the operation of a particular key lever
there will be some play or lost motion which would result in the imperfect operation
of the type wheel, such play or lost motion can be readily compensated for, by
slightly reducing the shoulder 8 of the key lever so as to permit a slightly further
movement of the forward or cam end of said key-lever and thus effect a slightly
further movement of the adjacent arm or lever 22 (or 23), sufficient to compensate
for the lost motion or play and bring the type wheel to its proper writing position
in accordance with the key lever which has been operated.
It will be observed that the key levers project forwardly beyond the notche.l
flange 4 and that the free forward extremities of said key levers are slightly spaced
apart. This arrangement is important in that it permits the forward or cam ends
of the levers to be moved slightly laterally in one direction or the other for the
purpose of effecting or correcting the alignment of writing. It is apparent that
if the cam end of a key lever be bent laterally in one direction or the other, the
operation of said key lever, will result in a slightly greater or less movement of
the co-operating arm or lever 22 (or 23), and thus so regulate the movement of
the gearing and the type wheel as to insure the accurate setting of the desired
letter in position for writing.
Within the segmental space under the arms 18, 22, 23, two plates 24 are disposed
and normally supported on seats 25 formed by the framework. Each plate 24 is
connected with plates 26 disposed below the seat 25, by means of rods 27, 28,
passing loosely through the portion of the frame which constitutes said seat, the
lower portion of each rod 27 being beveled so as to form cam faces 29 against
which pins 30, projecting from the shafts 11, are adapted to ride. Each pair of
plates 24 26, and their connecting rods constitute a vertically movable frame, the
When a key
four plates with their connecting rods forming two such frames.
lever is depressed, the hook 9 at the cam end thereof will engage the under face
of one of the plates 24 and thus raise one of the vertically movable frames.
When a vertically movable frame is thus raised, the cam face 29 of the rod 27
will be raised above the pin 30 on shaft 11 and thus permit said shaft to turn
When the key
and allow the operation of the arm or lever 22 connected to it.
lever shall have been released by the operator, the vertically moveable frame which
had been raised by said key lever, will be released and perimitted to fall by its own
gravity.
As said vertically movable frame approaches its normal position, the cam face 29
of rod 27 will engage the pin 3 and positively turn the shaft 11 to which it is
connected and thus return the co-operating lever 22 (or 23), the gearing and the
type wheel to their normal positions. Thus it will be seen that the type wheel
and its operating mechanism, will be returned to their normal positions by the
weight of the vertically movable frames as they descend to assume their normal
positions. The spring 24" above described for returning the to their normal
parts
positions can, therefore, be dispensed with if desired, but prefer to use said
spring to quicken the return of the parts and to assist the vertically movable
frames in performing this function.

page_text: It will be seen that when the parts are in their normal positions, the pins in
both shafts 11 will bear against the rods 27 at points above the cam faces of the
latter and thus the shafts 11 will be prevented from any possible movement until
a key lever is operated. Thus it will be seen that the gearing which actuates the
type wheel and consequently the type wheel itself will be normally locked.
The portion 2 of the frame A of the machine is made with guide-ways 31 for
the accommodation of the carriage C of the machine. An arm 32 is secured to
the rear part of the frame and projects over the carriage, terminating a short
distance from the type wheel. The horizontal portion of the arm 32 is adaptel
to constitute a bearing for an impression hammer 33, which latter is maintained in
and returned to its normal position by means of a spring located within the arm 32
and the inner end of said impression hammer is provided with a removable cushion
or head 34. An important reason for making the rubber cushion or head 34
removable is to permit the use of comparatively hard cushion when manifold
writing is desired or a comparatively soft one when a single impression is to be
made. An inking ribbon 35 passes between the head 34 of hammer 33 and the
type wheel and is fed in a manner hereinafter explained. The paper to be written
upon is placed within a cylinder 36 as usual in machines of this class and passes
up between feed rollers 37, 38, mounted in the carriage and between the type
wheel and the hammer 34. The feed roller 37 is mounted in elongated bearings
and pressed against the feed roller 38 by means of springs 39. Each of these
springs is made approximately V-shaped and its respective arms bear against the
journals of the respective rollers. The arms of each spring 39 will preferably be
connected by a set screw 40 whereby to regulate the tension of the spring and the
pressure exerted by the rollers on the paper.
One journal of the roller 38 is extended beyond its bearing and provided with
a knob 41 and a star wheel 42. A detent 43 is pivoted at one end to the carriage
and provided between its ends with a detent roller to engage the star wheel 42, with
which it is maintained in contact by means of a spring 45. The detent 43 is
provided with a thumb piece 46 by which the roller 44 can be moved away from
the star wheel so as to permit the free movement of the feed roller 38 when it is
desired to move the paper for any reason. When the detent is thus moved back; a
pin 47 thereon will be engaged by a hook 48 on a pivoted arm 49, and the detent
will thus be held out of engagement with the star wheel. When the paper shall
have been adjusted by turning the feed roller 38, the pivoted arm 49 will be moved
by the operator so as to release the pin 47 from the hook 48 and permit the detent
roller to again engage the star wheel.
The journal at the other end of the feed roller 38 is provided with a ratchet
wheel 50, and on said journal, a lever 51 is loosely mounted. To the lower end of
said lever, a spring dog 52 is attached and adapted to engage the ratchet wheel 50.
The lever 51 is maintained in and returned to its normal position by means of a
spring 53.
The upper end of the lever 51 is made with a hollow arm 54, in which
a spring pressed dog 55 is mounted and adapted to engage a stop 56 made in the
frame of the carriage whereby to limit the movement of the lever 51 and thus
regulate the movement of the roller 38 when the lever is operated to move the
paper for a new line of writing. Should it be desired to move the paper for a
double space, the dog 55 will be withdrawn to permit a further movement of the
lever 51. A rack bar 57 is attached to the rear portion of the frame for
the reception of an adjustable stop 58. An oscillatory rod 59 is mounted on the
carriage and provided with a pin 60. To one end of the rod 59, an arm 61 is
attached and provided at its free end with a pin 62" which rests on one end of the
paper cylinder, the weight of said arm 61 serving to normally maintain the pin 60
out of line with the stop 58. These devices constitute a simple and efficient margin
stop whereby to limit the movement of the carriage when it is desired to leave a
margin at one side of the paper. It is apparent that when the stop 58 shall have
been set for the desired margin, and the arm 61 raised, the pin 60 will be brought
in line with the stop 58 and the return movement of the carriage will thus be
.

page_text: limited. The arm 61 will then be released by the operator, whereupon the pin 60
will be moved out of line with the stop 58 and permit the carriage to be moved
back to its full extent for the next line of writing.
The carriage C is adapted to be propelled by means of a spring actuated drum 62
supported on the frame A by means of a stud 63 and connected with the carriage
by means of a strap 64, one end of said strap being attached to the carriage and the
other end attached to a pin 65 on the periphery of the spring drum. A bell 66 is
attached to the drum 62 and turns with it. The drum may be provided with
several pins 65 and when it is desired to adjust the tension of the spring in drum 62,
the strap may be removed from the drum, the drum turned by grasping the bell,
and the strap again attached to the drum. A sleeve 67 is mounted on a stud on the
frame and provided with a bell-hammer-arm 68. An arm 69 projects from said
sleeve 67 and carries a spring-actuated dog 70 to be engagel by a pin 71 on the
carriage whereby to withdraw and then release the hell hammer, which latter will
then be forced in contact with the bell by means of a spring 72.
The under face of the frame is made with lugs 73 having screwthreaded
perforations for the accommodation of transverse screwthreaded shaft 74, on which
a plate 75 is loosely mounted and maintained in and returned to its normal position,
by means of a spring 76. From one end of the pivotally supported plate 75, an
arm 77 projects and normally disposed over the lower plates 26 of the vertically
movable frames.
The other end of the plate 75 is made with a tooth 78 adapted to engage the
ratchet bar 79 on the carriage, said tooth constituting the fixed dog of the step-by-
step feed mechanism for the carriage. The movable dog 8 of said feed mechanism
is pivotally attached to the plate 75 and adapted to be actuated by a single bow
spring 81, the tension of said spring being adjustable by means of a cam 82 attached
to the plate 75. It is apparent that the ratchet feed mechanism can be readily
adjusted by means of the screwthreaded shafts 74.
From this construction, it will be seen, that when a key lever is depressed and
one of the vertically movable frames raised as above explained, the engagement of
the plate 26 with the arms 77 will turn the plate 75 on its fulcrum and permit the
carriage to move one tooth of the ratchet bar on the carriage.
To effect spacing between words, a key lever 83 is provided, and connected, by
means of a wire 84, with the arm 77 of plate 75, said key lever being limited in its
movement by means of a top plate 85.
In order to move the ratchet devices of the feed mechanism, entirely free of the
ratchet bar cn the carriage, an arm 86, having a thumb piece 87, is pivotally
attached to the front portion of the frame, and loosely attached to the arm 77 of
plate 75.
The impression hammer 33 above alluded to will be actuated to force the inking
ribbon and the paper toward the type wheel when a key is depressed, by means of
devices now to be described. The part 2 of the frame A is made with two
depending lugs 88 between which the trunnions 89 of a force hammer 90, are
supported, said hammer 90 being adapted to be made to strike the impression
hammer. The force hammer is returned to its normal position by means of a
weight 91 attached thereto, in which position it is retained by means of the
engagement of the bifurcated notched end of an L-shaped trip lever 92 with
pins 93 projecting laterally from the force hammer, which lever is pivotally
supported at the juncture of its two arms by the arm 32. The notched portions o
the lever 92 are made to properly receive the pins 93 by means of a weight 94
attached to said lever.
A yoke 95 is loosely mounted on the trunnions of plate 75, the arms 96 of said
yoke terminating over the plates 26 of the vertically movable frames. At the
other end of the yoke the arins 96 unite to form a single arm 97 provided at or
near its free end with laterally projecting pins 98, said arın 97 terminating
somewhat above the lower end of the L-shaped trip lever 92. Springs 99 are
coiled on the trunnions 89 of the force hammer and attached at one end thereto.

page_text: The other ends of the springs 99 are extended to form arts 100 which normally
bear lightly on the pins 98. From this construction and arrangement of parts it
will be seen that when a key is depressed and one or the other of the vertically
movable frames raised as hereinbefore explained, the lower plate 26 of the frame.
thus raised will cause the yoke 95 to be turned on its fulcrum and the rear end
thereof (arm 97) depressed. The first downward movement of the arm 97 of
yoke 95 will depress the arms 100 of the springs 99 and thus subject said springs to
tension; in other words, wind said springs.
As the arm 97 of yoke 95 continues its downward movement, it will engage the
trip lever 92 and move the notched, bifurcated end of the latter out of contact with
the pins 93 of the force hammer. The force hammer is thus released and the
springs 99 permitted to act to cause said hammer to strike the impression hammer
with a quick blow and effect the impression of a type on the paper as will be
readily understood. As soon as the key is released, the force hammer will be.
permitted to fall back to its normal position in engagement with the trip lever.
It may be here stated that when a key is depressed, the type wheel will be set in
position for writing before the force hammer is tripped.
In order to shift the type wheel for different type rows thereon, for instance,
for capital letters and figures, two key levers 114 and 115 will be employed, one-
of said levers being adapted to raise the type wheel twice as far as the other.
It now remains to describe the construction and operation of the device for
supporting and feeding the inking ribbon.
Ribbon reels 101 are loosely mounted at the respective ends of the segmental
front portion 1 of the frame, and each side of each reel is made with ratchet teeth
so as to form two ratchet wheels 102-103.
On the studs which support the ribbon reels, approximately L-shaped levers 104
are loosely mounted, and one arm of each of said levers carries a pivoted dog 105-
adapted to engage the ratchet wheels 102 of each pair. The other arms of the
levers 104 are preferably weighted and disposed directly over vertically movable
rods 106 which project loosely through the frame work and in proximity to their
lower ends, are provided with pins 107 which normally rest on the bottom.
plates 26 of the vertically movable frames. The lower ends of the rods 106 are
connected together by means of a cross bar 117 so as to cause said rods to move
together.
A segmental sliding bar or switch 108 is mounted on the under side of the top
plate 85 and provided at its respective ends with cam-shaped arms 109 adapted to
maintain one of the dogs elevated while the other is operating. Dogs 110 are
pivotally connected to the ends of the top plate 85 and adapted to engage the
ratchet wheel 103 of the reel on which the ribbon is being wound, whereby to.
prevent the return of the dog 105 turning the ribbon reel backwardly.
The cam arm 109 at one end of the top plate 85 not only serves to hold up the
dog 105 from the ribbon reel from which the ribbon is being drawn, but it also.
holds up the dog 110 from said reel. It is apparent that when the segmental
switch bar is moved from one end to the other of its throw, the dogs 105-110 over
one ribbon reel will be raised and those over the other reel will be lowered, thus
changing the direction of feed of the ribbon. It will be seen that when a key lever.
is depressed, the upward movement of one of the vertically movable frames will
cause the lower plate 26 of said frame to engage the pin 107 on one of the rods 106
and raise both of said rods, thus imparting motion to the levers 104 and causing
one of the dogs 105 to engage one of the ratchet wheels of one of the reels and..
move the latter to wind the inking ribbon. The inking ribbon is passed through
guides 11 at the ends of the plates and through slots or guides in arms 112 projecting.
from a flange 113 on the top plate 85, said arms 112 also serving as guards for the
paper.
In constructing the type wheel, 1 prefer to make it of light material, preferably
hard rubber. The wheel comprises a ring 118 having an internal perforated
web 119 to which the shank 16 is attached, said shank having a plate 120 secured.

page_text: to it, and from this plate, a pin 121 projects through the web of the wheel, thus
holding the wheel rigidly on the shank. The type may be made on a thin metal
strip secured to the periphery of the wheel.
Various slight changes might be made in the details of construction of my
invention without departing from the spirit thereof or limiting its scope and hence
I do not wish to limit myself to the precise details herein set forth, but,
Having now particularly described and ascertained the nature of this inven-
tion and in what manner the same is to be performed 1 declare that what I
claim is :-
1st. In a type writing machine, the combination with a type wheel, of a pivoted
key lever having a cam at one end, and gearing between said cam end of the lever
and the type wheel for moving the latter, substantially as set forth.
2nd. In a type writing machine, the combination with a type wheel and a key
lever, of gearing between the key lever and type wheel constructed and adapted to
transmit motion to the latter and also hold said type wheel fixed in the position
which it may be set, substantially as set forth.
3rd. In a type writing machine, the combination with a type wheel, a pinion
adapted to transmit motion thereto and key levers having cam ends, of two levers
to be engaged by the cam ends of the key levers, and rack bars secured to said
Jevers and in constant mesh with said pinion, substantially as set forth.
4th. In a type writing machine, the combination with a type wheel, a pinion
adapted to transmit motion thereto and key levers, of two sets of actuating devices
between said key levers and pinion, both sets of actuating devices being in constant
connection with said pinion and serving to hold the type wheel fixed when set to
writing position, substantially as set forth.
5th. In a type writing machine, the combination with a type wheel and a pinion
adapted to transmit motion thereto, of key levers having cam ends, pivoted levers
to be engaged by said cam ends of the key levers, arms projecting from said
pivoted levers and terminating beyond said pinion and rack bars at the free ends of
said arms, meshing with said pinion, substantially as set forth.
6th. In a type writing machine, the combination with a type wheel and a pinion
adapted to transmit motion thereto, of type levers having cam ends, pivoted levers
to be engaged by the cam ends of the key levers, rack bars carried by said pivoted
levers and meshing with said pinion, and a single spring bearing at its ends
against the rack bars and between its ends against said pivoted levers, substantially
as set forth.
7th. In a type writing machine, the combination with a type wheel having an
elongated pinion, of a combined pinion and toothed segment, the latter to mesh with
the elongated pinion, of key levers having cam ends, pivoted levers to be engaged
by said cam ends of the key levers, and rack bars carried by said pivoted levers and
meshing with the pinion to which the toothed segment is secured, substantially as
set forth.
8th. In a type writing machine, the combination with a type wheel having an
elongated pinion, of a combined toothed segment and pinion, the former meshing
with said elongated pinion, key levers, rack bars meshing with the pinion which
carries the toothed segment, connections between said rack bars and key levers, and
a flyer mounted independently of said combined toothed segment and pinion and
adapted to receive motion from the elongated pinion of the type wheel, substantially
as set forth.
9th. In a type writing machine, the combination with a type wheel carrying an
elongated pinion and a series of key levers, of a flyer consisting of a toothed
segment having arms, said toothed segment meshing with said elongated pinion, a
combined toothed segment and pinion mounted on the same stud with the flyer but
independently thereof and adapted to transmit motion to the elongated pinion of
the type wheel, rack bars meshing with the pinion of the combined segment and

page_text: "
pinion and connections between said rack bars and the key levers, substantially as
set forth.
10th. In a type writing machine, the combination with a frame having a
segmental guiding flange, a type wheel and gearing connected with said type wheel,
of a series of key levers mounted on the frame and terminating forwardly of said
guiding flange and spaced apart at their forward extremity, said forward
extremities of the key levers having cam faces to actuate said gearing, substantially
as set forth.
11th. In a type writing machine, the combination with a type wheel, gearing
connected therewith, and levers connected with said gearing, of key levers having
cam ends to engage said first mentioned levers, and shoulders on the cam ends of
the key levers adapted to engage said first mentioned levers and be thereby limited
in their movement, substantially as set forth.
12th. In a type writing machine, the combination with a type wheel, key levers
and connections between the type wheel and key levers, of devices constructed and
adapted to lock the type wheel in its normal position.
13th. In a type writing machine, the combination with a type wheel and key
levers, of gearing between the type wheel and key levers, said gearing being
constructed and adapted to hold the type wheel rigid when set to writing position,
and devices connected with said gearing and adapted to lock the type wheel in
normal position, substantially as set forth.
14th. In a type writing machine, the combination with a type wheel, and gearing
connected with said type wheel, of levers connected with said gearing, key levers
having cam ends to engage said first-mentioned levers, and vertically movable
frames constructed and adapted to lock the type wheel and gearing in their normal
positions, and hooks or projections on the key levers for raising one or the other of
said vertically movable frames and thus unlocking the gearing and type wheel,.
substantially as set forth.
15th. In a type writing machine, the combination with a type wheel having an
elongated pinion, of a combined toothed segment and pinion, the former meshing
with the elongated pinion, oscillatory shafts, rock bars secured to said shafts and
meshing with the pinion carrying the toothed segment, levers projecting from said
shafts, key levers having cam ends to engage said levers a vertically movable
frame having cam faces, and pins on said shafts to engage said frames and adapted:
to be moved by said cam faces, substantially as set forth.
16th. In a type writing machine, the combination with a type wheel and an
impression haminer, of a removable cushion on the end of said impression hammer,.
substantially as set forth.
17th. In a type writing machine, the combination with a type wheel and an
impression hammer, of a force hammer, a normally loose spring connected with the
force hammer, a trip for said force hammer, key levers and devices operated by
the key levers and constructed and adapted to first apply tension to said spring and
then operate said trip to release the force hammer, substantially as set forth.
18th. In a type writing machine, the combination with a type wheel and an
impression hammer, of a force hammer, a trip therefor, a normally loose spring for
the force hammer, a pivoted yoke, key levers and connections between one end of
said yoke and the key levers, the other end of said yoke being adapted to apply
tension to said spring and then operate the trip, when a key lever is pressed,
substantially as set forth.
19th. In a type writing machine, the combination with a type wheel and an
impression hammer, of a force hammer, a normally loose spring therefor, a trip for
said force hammer, key levers, vertically movable frames adapted to be raised by
the key levers, and a pivoted yoke having arms disposed over portions of the
respective vertically movable frames and also having an arm connected with
the force hammer spring and adapted to operate said trip, substantially as
set forth.

page_text: 20th. In a type writing machine, the combination with a carriage and a ratchet
. bar thereon, of a pivoted plate having a fixed dog at one end to engage said ratchet
bar, a dog pivoted to said plate and adapted to co-operate with the first mentioned
dog, a single bow spring bearing against the pivoted dog, means for adjusting said
bow spring, vertically movable frames. an arm projecting from said pivoted
plate and terminating over portions of both frames, and key levers adapted to raise
said vertically movable frames, substantially as set forth.
21st. In a type writing machine, the combination with a carriage and a ratchet
bar thereon, of a pivoted plate, ratchet devices carried by said plate co-operating
with the ratchet bar to effect the feed of the carriage, an arm projecting from said
pivoted plate, a key lever connected with said arm whereby to actuate the ratɩ het
devices to effect a step-by-step feed of the carriage, means for limiting the
movement of said key lever, and a key connected with the arm of the pivoted
plate whereby to move the dogs out of engagement with the ratchet bar and effect
the release of the carriage, substantially as set forth.
22nd. In a type writing machine, the combination with a type wheel having a
pinion and key levers having cam ends, of a combined toothed segment and pinion,
two oscillatory shalts, rack bars carried by said shafts and meshing with said last-
mentioned pinion, two levers, one secured to each oscillatory shaft, said levers being
normally disposed coincident with the segment of a circle marked by the cam ends
of the key levers, substantially as set forth.
23rd. In a type writing machine, the combination with vertically movable frames
and key levers adapted to raise said frames, of ribbon, reels having ratchet teeth,
pivoted levers, a dog pivoted to one arm of each of said levers and adapted to engage
ratchet teeth of the ribbon reels, vertically movable rods adapted to engage
the other arms of said levers, and pins projecting from said rods and adapted to
be engaged by portions of said vertically movable frames, substantially as set
forth.
24th. In a type writing machine, the combination with a framework and a top
plate, of key levers, vertically movable frames to be raised by said key levers,
ribbon reels mounted on the framework and each comprising two ratchet wheels,
a pivoted lever adjacent to each ribbon reel, a dog carried by one arm of each
lever and adapted to engage one ratchet wheel of each reel, vertically movable
rods to engage the other arms of said levers, a cross bar connecting said rods, pins
projecting from said rods and over portions of the vertically movable frames, a
sliding switch bar on the top plate of the machine, dogs pivoted to said top plate
to engage a ratchet wheel of the ribbon reels and cam arms carried by said switch
bar and adapted to raise the dogs. from the ratchet wheels of one reel and permit
the dogs of the ratchet wheels of the other reel to engage the same, substantially
as set forth.
25th. In a type writing machine, the combination with the framework and a
carriage, of a bar secured to the framework, a stop adjustably secured to said bar,
an oscillatory rod mounted on the carriage, a pin on said rod, normally out of line
with said stop, and an arm secured to said rod for moving the pin in line with
the stop, whereby to regulate the margin on the paper being written upon,
substantially as set forth.
26th. In a type writing machine, the combination with a framework and a
carriage, of a ratchet bar secured to the framework, a stop adjustably secured to
said, ratchet bar, an oscillatory rod mounted on the carriage, a pin on said. rod
normally out of line with said stop, an.arm on said rod whereby to move the pin on
the latter in line with said stop, and a pin on said arm to engage the carriage and
maintain the pin on the oscillatory rod normally out of line with the stop on the
ratchet bar, substantially as set forth.
27th. In a type writing machine, the combination with a carriage and paper
feed rollers mounted therein, of a star wheel and a knob on one of the journals of
one of said rollers, a pivoted detent, a roller carried by said detent and adapted to
engage the star wheel, a spring attached to the free end of said detent and to the

page_text: carriage, a pin on the detent, a pivoted arm and a hook on said pivoted arm to
engage said pin, substantially as set forth.
28th. In a type writing machine, the combination with the framework, a carriage
and ratchet feed mechanism for the carriage, of a combined spring actuated drum
and bell, a strap attached to one end of the carriage and removably attached at
the other end to the spring-actuated drum, and a hammer for said bell actuated by
the carriage, substantially as set forth.
29th. In a type writing machine, the combination with the framework, a carriage
and a ratchet bar secured to the latter, of a pivoted plate carrying dogs to
co-operate with the ratchet bar to effect the step-by-step feed of the carriage,
means for adjusting said plate horizontally, key levers and connections between
said key levers and said pivoted plate, substantially as set forth.
30th. In a type writing machine, the combination with the framework, of horizontal
screwthreaded shafts mounted under the framework, a plate pivotally supported by
said shafts, a carriage, a ratchet bar secured to the carriage, dogs carried by the
pivoted plate and co-operating with the ratchet bar to effect the step-by-step feed
of the carriage, key levers and connections between the key levers and said pivoted
plate, substantially as set forth.
31st. In a type writing machine, the combination with a framework having two
segmental notched flanges, radial slots and segmental grooves in its top, of key
levers guided by said notched flanges and radial slots and having pins seated in
said segmental grooves, a type wheel and gearing between said type wheel and key
levers, substantially as set forth.
32nd. In a type writing machine, the combination with a frame and a carriage,.
of a pivotal plate carrying dogs at one end, a ratchet bar on the carriage to be
engaged by said dogs, vertically movable frames adapted to engage said plate, key
levers to raise said frames, and move said pivoted plate in one direction, and a
spring for moving said pivoted plate in the reverse direction, substantially as set
forth.
33rd. In a type writing machine, the combination with a carriage and paper feed
rollers, of a ratchet wheel on one of the journals of one of said rollers, a pivoted
lever carrying a dog to engage said ratchet wheel, a tubular arm on said lever,.
and a spring-actuated dog mounted in said tubular arm and adapted to engage a
stop on the carriage or to be moved out of line with said stop, substantially as set.
forth.
34th. In a type writing machine, a type wheel consisting of a ring having a
perforated web, a shank, a plate secured to the shank, a pin projecting from.
said plate and entering the web and a strip containing characters, on said ring,.
substantially as set forth.
Dattu CHICOH way
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HERBERT HADDAN & Co.,
18, Buckingham Street, Strand, London, W.C., Agents to Applicant..