Improvements in Type-writing Machines.
Year: 1897

page_text: Date of Application, 27th May, 1897-Accepted, 10th July, 1897
COMPLETE SPECIFICATION.
Improvements in Type-writing Machines.
I, HUBERT BURG of Mollkirch near Rosheim, Alsace-Lorraine in the Empire of
Germany, Clergyman, do hereby declare the nature of this invention and in what
manner the same is to be performed, to be particularly described and ascertained in
and by the following statement :-
My invention relates to improvements in Type Writing Machines in which the
types are provided on the surface of a cylinder to be shifted, rotated and forced
against the paper by the depression of keys, and the object of my invention is to
reduce the number of keys of the keyboard to a practical minimum in order to
simplify the learning with and operating of the machine and to make it serviceable
to the blind.
I attain these objects by the means illustrated in the accompanying drawings,
in which:
Fig. 1 is a front view and Fig. 2 a top view of the machine; Fig. 3 a vertical
section through line x-x of Fig. 2; Fig. 4 a top view corresponding to Fig. 2, the
top plate with the keyboard being removed; and Fig. 5 another vertical section
through lines of Fig. 2 or Fig. 4; and Fig. 6 a left hand end view of Fig. 2.
Figs. 7 and 8 are views of a modification of my invention hereinafter fully
described.
Similar letters refer to similar parts throughout the several views.
Before referring to the drawings it may be briefly explained in which manner a
sufficient number of types is controlled by a small number of keys. To this purpose
the keyboard consists of two sections, one for each hand, and each section contains
4 or 5 keys, one for each finger, one and the same key belonging to one and the
same finger, so that the hands and fingers are stationary in operating the machine.
For printing a certain type, two fingers, one of the left hand and the other of the
right hand, are simultaneously to be depressed. Thus by the combined action of
the fingers of both hands by twos 25 different types can be printed, as hereinafter fully
explained. These 25 types form a longitudinal section of the surface of the type
cylinder, which contains a plurality of such sections, three for instance; and by
means of a shifting key each of the said sections can be brought into printing
position, the same key of the keyboard then controlling again the 25 types of the
shifted section. By these means 75 different types are controlled by 8 or 10 keys.
However, it will be obvious that the number of the said sections may be increased
to 4 or 5, and 100 or 125 different types printed by the small number of 8 or 10 keys.
In order to increase the work of the machine or to enable the same to print simul-
taneously common types and characters for the blind the number of the printing
parts may be duplicated as represented in the drawings, the other parts being
indifferently the same in a simplex or in a duplex machine.
Referring now to the drawings the frame of the machine consists of two side
walls 11, a top plate 2 and a upper guide plate 3, carrying the keys 4 5 6 7 and
8 9 10 11 respectively, and a bottom plate 12 supporting the paper-carriages 13 14
and the platens 15 16. The type cylinders 17 18 project from both sides of the
side walls 11 between which the mechanism for rotating, shifting and depressing

page_text: the cylinders is provided. The latter are fixed to the ends of a shaft 19 to be shifted
and rotated in bearings of a rocking lever frame 20 21, which is mounted on a
shaft 22 journaled in the side frames 11. Another rocking frame 23 24 is loosely
mounted on shaft 22 by means of a sleeve 25, and likewise loosely mounted
thereon by means of a sleeve 28 a lever 27 carrying on its free end a toothed
segment 26. Frame 20 21 and lever 27 are pressed upwards by the springs 29
and 30 coiled on shaft 22 and sleeve 28 respectively. Frame 23 24 bears against
lever 27 by means of a pawl 31 pivoted to the outside of the frame lever 23, and is
therefore likewise supported by spring 30. A hook shaped pawl 32 is pivoted to
the frame lever 23, the upper projection of the pawl bearing on one side against a
pin 33 of lever 23 and on the other side against a stop pin 34 projecting downwards
from plate 2, thus stopping the rising movement of lever 27 and of frame 23 24.
A two armed cam lever 35 36 pivoted to the frame lever 23 bears against lever 27
with the cam portion 35, the upper arm 36 being connected to a rod 37, partially
broken away in the drawing, and by means of this rod connected to a lever 38
mounted on a shaft 39 which is journaled in bearings on the upper side of plate 2.
Another lever 40 is mounted on shaft 39 within the reach of the right hand thumb
and serves for turning lever 35 36 so as to swing downwards lever 27. According
to the measure of this turning movement pawl 31, actuated by a spring 41, is thereby
slipped beyond the steps 42 or 43 on the insido of the segment 26, and when
releasing thumb lever 40, lever 27 rises again, but is stopped by step 42 or 43. In
order to disengage pawl 31 from step 42 or 43 a thumb piece 44, Figs. 1 and 2, is
provided within the reach of the left hand thumb, projecting from a slide 45 which
is guided on plate 2 and reaches with a lateral projection 46 beyond an upper arm
47 of pawl 31 projecting through a slot of plate 2. Slide 45 is actuated towards
the right hand of Fig. 2 by a spring 48, so as to be generally kept out of engagement
with arm 47; but when the thumb piece 44 is actuated, arm 47 is pressed towards
the left so as to disengage pawl 31 from step 42 or 43, and lever 27 swings back
into its normal position with reference to frame 23 24 as shown in the drawings.
The rocking movement of lever 27 is imparted to a pinion 49 fixed to the type
cylinder shaft 19 and engaging with the toothed segment 26 of lever 27.
means the type cylinders 17 18 are accordingly rotated.
By these
Supposing now for instance 15 longitudinal rows of types being provided on the
surface of the type cylinder, each row containing 5 types, aud designating the
lowermost row in the drawing, i.e. the printing row, as the first row, it will be clear
that the first row is in printing position when pawl 31 bears against lever 27 and
that the 6th and 11th row are brought into printing position, when pawl 31 engages
with step 42 and 43 respectively.
Every five consecutive longitudinal rows of types forming one of the above
mentioned sections, viz. row 1 to 5 the first, row 6 to 10 the second and row 11 to
to 15 the third section, the type cylinder having been shifted to one of the said
sections by actuating thumb piece 40, must further be adjusted to keep five different
positions, so as to bring the several rows of each section into printing condition.
The first position is immediately given by shifting the several sections, as described
whilst the four remaining positions are afforded by actuating the keys 8 9 10 11 of
the right hand key board section.
Keys 8 to 11 are guided in slots of plates 2 and 3 and kept in raised position by
coiled springs 50 bearing against shoulders of the reduced portions of the key
stems, the upwards movement of springs 50 being limited by plate 3. The key
stems are recessed at their lower ends showing two steps 51 and 52, and frame 23 24
is provided with cross pins 53 underneath the steps 51. Thus each key when
depressed takes along with the rocking frame 23 24 and likewise lever 27 by means
of pawl 31, whilst the lever frame 20 21, which carries the type cylinders, is caught
against movement by a catch 55 loosely mounted on the connecting rod 54 and
Lever 27
extending through a slot of plate 2, connecting the frame to that plate.
therefore by means of the toothed segment 26 will impart a turning movement to
shaft 19, and as the keys have different distances from rocking shaft 22 lever 27

page_text: will perform different strokes by depressing the several keys, although the latter
are to be uniformly depressed. Thus by conveniently distancing the several parts
with reference to the rocking shaft 22 the keys 89 10 11 will control the 2nd 3d 4th
and 5th row of each type section respectively so as to bring the same into printing
position opposite to the platen.
In order to intercept the momentum of the swinging lever 27 and the type
cylinders, which otherwise would disconnect lever 27 from frame 23 24 thus
prejudicing the exact adjustment of the type cylinders and affording a slurry print
the above mentioned hook shaped pawl 32 is provided, which being instantaneously
released from pin 34 as frame 23 24 begins to descend, is forced by a spring 56
against a piece 60 fixed to the toothed segment 26 and caused to engage with one
of the steps 57 58 59 provided on its edge, thus firmly connecting lever 27 to frame
23 24 in accordance with the adjusted type sections of the type cylinders. By
means of pin 34 pawl 32 is disconnected from piece 60 in the raised position of
frame 23 24, thus allowing of a free movement of lever 27 for adjusting the type
sections as described.
Lever 27 and frame 23 24 being firmly connected to each other when performing
their swinging movement, so as to prevent any inconvenience arising otherwise
from the disconnection of the said parts, it might be desirable for the same purpose
to connect the same too with the keys as represented Fig. 3 with reference to
key 11.
A hook shaped pawl 11'is pivoted to key 11 and a projection 12' provided
at its upper end, so as to bear against plate 2 when the key is in its raised position
as shown, and release the corresponding cross pin 53 of frame 23 24 from th
hook 111, thus allowing of a downwards swinging movement of the said frame by
depressing any one of the other keys. But as soon as key 11 is depressed, projec-
tion 121 is deprived of its abutment and the hook by the pressure of a spring 14'
intercepting cross pin 53 firmly connects the entire swinging system to the key.
A soon as by depressing a key the corresponding row of types is adjusted in
printing position, catch 55 is instantaneously released and frame 20 21 taken along
with when further depressing the key until the cylinders reach the platens and the
printing is performed. This is effected by a lever 61 on a shaft 61x journaled in the
frame walls 11, provided with lateral projecting pins 62 underneath the steps 52
of the key stems, the free end 63 of the said lever engaging with a pin 64 of
catch 55. When depressing a key, first the adjusting movement of the type
cylinders takes place, and then lever 61 is taken along with as soon as step 52 of
the key stem reaches the corresponding pin 62 underneath that step, that is to say
immediately before the corresponding row of types of the type cylinders reaches its
printing position. In the same time lever end 63 actuating pin 64 of catch 55 will
disconnect the catch and frame 23 24 from plate 2 and strike a collar 66 provided
on connecting rod 54. The several coacting parts are calculated and distanced
in such manner that lever end 63 strikes collar 66 just the same moment as the
adjusting of the type cylinders is finished. In consequence thereof, when further
depressing the key no further turning movement of the type cylinder takes place,
as the entire system consisting of the parts 20 21 27 23 24 61 then forms an integral
system swinging integrally against the platens to reach the same and perform the
printing.
In order to make the said integral system a rigid system within the swinging
period, so as to eliminate any irregularity possibly arising from the uncontrolled
connection between lever 61 and frame 20 21, there is no difficulty to provide a
catch at the end 63 of lever 61 coacting in the same manner with connecting rod 54
as catch 111 with the corresponding cross pin 53. The said modification has not
been represented as it will be clear from the drawing and description with respect
to catch 11' and its working.
The types provided in longitudinal rows on the surface of each type cylinder,
formn in the same time 5 circular sections as represented in the drawings. In order
to print a certain type, the cylinder, besides being turned, must therefore be
longitudinally shifted. This is effected by the keys 4567 of the left hand section

page_text: of the key board, one of which keys (key 4) being shown depressed and the type
cylinders shifted in correspondence therewith to the largest extent. Two disks 67 68
are mounted on the type cylinder shaft 19, and pin 69 of a lever 71 mounted on a
shaft 70 enters the space between the said disks. Thus by rocking shaft 70, as
hereinafter described, the type cylinders will be longitudinally shifted and allowed
to swing towards the platens without leaving their position adjusted by the shifting
movement.
Shaft 70 is journaled in bearings underneath plate 2 and rigidly connected to a
series of levers 72 belonging each to one of the keys 45 67. The latter are guided
in the plates 2 and 3 and controlled by coiled springs 74 as described with reference
to keys 8 9 10 11. The stems of keys 4 5 6 7 are recessed at 75 at their lower
ends, Fig. 6, and levers 72 provided with small rollers 73 entering the said recesses
when the keys are depressed. By these means when depressing a key a rocking
movement is imparted to shaft 70 and the extent of this movement in the same time
stopped by the roller 73 coacting with the corresponding edge of the recess, as
clearly shown in Fig. 6. In order to exactly limit the rocking movement
corresponding to each key, abutments 76 are provided underneath plate 2 in the
path of each key stem the oblique edges of which form abutments to bear against
the tapered ends of the stems when a key has been depressed as represented in
Fig. 6 with respect to key 4.
A coiled spring 77, Fig. 4, presses the lever 71 and the type cylinder shaft 19 to
the left of Fig. 6 so as to keep the first, i.e. the outermost right hand type section
in printing position, if no key is depressed. The shifting of the 2nd 3d 4th and 5th
section is then performed by depressing the keys 5 6 7 4 respectively.
In order to exactly control the turning and shifting adjustment of the type
cylinders the well known correcting wheel 19* on shaft 19 and a correcting
plate 20x of the base plate 12 is made use of. Before the cylinders reach
the platens, the upper edge of plate 20* enters the opposite notch of wheel 19x thus
controlling the turning adjustment immediately before the printing is performed,
and as the edge of plate 20x is provided with notches 21* corresponding to the
several longitudinal positions of wheel 19*, it will be clear that the wheel engaging
with plate 20x is at the same time longitudinally adjusted.
It may be observed that catch 55 instead of being released by the keys 8 9 10 11
could likewise be actuated by the keys 4 567 by means of a lever extending
underneath these keys and striking pin 64 of the catch. However, it has not been
deemed necessary to represent this modification in the drawings as it will be easily
understood from the foregoing remark. Lever 61 should be retained in this
modification, but restricted to the only function of duly taking along with the type
cylinder frame 20 21.
The letter space shifting of the paper carriages may be brought about by the
oscillatory movement of frame 20 21 as represented Figs. 3, 4, 5. A horizontal
shaft 80 is journaled in bearings 78 79, carrying a ratchet wheel 81 and two gear
wheels 82 83, the latter engaging with racks 86 87 of the carriages 13 14, which are
guided on rails 88 89 of the buttom place 12. Shaft 80 is driven as indicated by
arrow 85, Fig. 3, by means of a clock spring provided in a spring box 84. A
horizontal rocking shaft 90 extends between the bearings 78 79, carrying a lever 91
and a two armed ratchet lever 92 93, and is actuated by a spring 94. Lever 91
lies in the path of frame lever 20, and when actuated by the rocking of frame 20 21
ratchet wheel 81 will be rotated step by step in the well known manner and the
carriages accordingly shifted. The hook shaped part 95 of lever 93 is connected
thereto by a spring piece 93' in order to allow of passing of the ratchet teeth of
wheel 81 underneath hook 95 as the carriages are shifted by hand to their initial
position.
An inking device is represented Figs. 1, 2 in connection with one of the both
type cylinders. Reels 96 97 provided with sleeves 98 99 are loosely mounted on
pins 100 101 laterally projecting from the side walls 1 1, and ratchet wheels 102 103
fixed to the other ends of the said sleeves. The ink ribbon 104 passes from reel 96

page_text: to reel 97 and is guided on a jacket 105 fixed to the side wall and partially
surrounding the type cylinder 17. The jacket is open at the bottom for the passage
of the type cylinder and when the latter swings towards the platen the printing is
performed by the medium of the ribbon part 106.
The ink ribbon is shifted by a lever 107 mounted on the outer end of rocking
shaft 22 by means of two pawls 108 109 pivoted to lever 107 and engaging with the
ratchet wheels 102 103 respectively. The pawls bear against two eccentrics 111 112
on a pin journaled in the side wall 1 and adjustable by a handle 110, and the
eccentrics are in such relative position to each other that by conveniently turning
the handle 110, pawl 108 and 109 can be alternately engaged with ratchet wheels
102 and 103 respectively or disengaged therefrom.
The word spacing is performed by a key 113, Figs. 1, 2, 4, mounted on the outer
end of the shaft 61% of lever 61. By depressing key 113 lever 61 is actuated and
takes along with frame 20 21 as heretofore explained; and likewise frame 23 24 is
taken along with by the medium of the cross pins 53, against which the descending
lever 61 strikes. In consequence thereof lever and frame system is integrally
rocked, no turning movement of the cylinders taking place. In order to prevent
hereby the printing of a type, as required, for the word space the corresponding
parts of the type cylinder surfaces are left without types and depressed with
respect to the proper printing surface. The ink ribbon therefore cannot reach the
paper and the latter is left blank. It will be obvious that key 113 is likewise to be
actuated by the right hand whenever types of the several first longitudinal rows of
the longitudinal type sections are to be printed.
The second (rear side) printing device may likewise be provided with an ink
ribbon, or left without any inking apparatus if it shall be utilized for producing
raised characters for the blind by means of a punching cylinder as well known.
Although the machine is represented in the drawings in connection with two
printing devices, there will obviously be no difficulty to restrict the same to but
one, without departing from the invention. It will likewise be obvious that the
shifting device for shifting the several longitudinal sections can be restricted to but
two sections or extended to more than three sections without any departure from
the invention.
If in the case of providing two printing devices, one for common types and the
other for characters for the blind, it should be desirable to have the latter highly
raised, I prefer the modification of the invention represented Fig. 7, part of the
front view, and Fig. 8 full side view, in which the type or printing cylinders perform
different strokes, as appearing from Fig. 8. In this modification the only difference
consists in that the lever frame 20 21 of Fig. 3, which carries the type cylinders, is
modified to form a swinging box 114, Fig. 7, front view, whilst all the other parts
admit of no change. In the said box are provided the unchanged former parts 22
23 and 24, 26 and 27, 61 and 61*, as represented, and likewise the parts 70 71 and
72 and keys 4 5 6 7 8 9 10 11 not represented in the drawings, as they are of no
importance to explain the modification. The working of the said parts is likewise
the same as heretofore described. Shaft 19 with the type cylinders and the other
parts supported by that shaft, and catch 55 are likewise journaled in box 114, the
latter, as stated before, supplying the place of former swinging frame 20 21.
Box 114 is supported by lateral arms 115 mounted on a rocking shaft 117, which
extends between uprights 116 secured to the base plate 12, and is kept in its raised
position by a coiled spring 118, its upwards swinging movement being controlled
by pins 119 of the uprights and pins 120 of the arms 115, bearing against pins 119.
A post 121 is secured to base plate 12, extending throughout box 114 and passing
through a slot in its cover plate; and box 114 is caught in its raised position by
catch 55 intercepting the upper edge of the said post. As soon as the catch is
released by depressing one of keys 8 9 10 11 or key 113, as heretofore described,
box 114 is swung towards the platens, the right hand cylinder of Fig. 8 thereby
obviously performing a larger stroke than the left hand cylinder. If therefore the
former contains the characters for the blind and the latter common types, it will be

page_text: clear that, without derogating from the quality of the common letters, highly raised
characters for the blind are to be obtained.
said
Having now particularly described and ascertained the nature of my
invention and in what manner the same is to be performed, I declare that what I
claim is :-
1. In a type writing machine, in which the type are arranged on the surface of a
swinging cylinder, the combination of two sets of keys, one set for shifting, and
the other for rotating the type cylinder, a swinging arm or frame to stroken by the
rotating keys, and a swinging segment loosely connected to the said arm or frame
and engaging with a pinion on the type cylinder shaft, substantially as and for the
purposes described.
2. In a type writing machine, in which the types are arranged on the surface of
a swinging cylinder, the combination of two sets of keys, one set for shifting, and
the other for rotating the type cylinder, a swinging arm or frame to be stroken by
the rotating keys, a swinging segment loosely connected to the said arm or frame
and engaging with a pinion on the type cylinder shaft, and means for adjusting
the segment with respect to the said swinging arm or frame, substantially as and
for the purposes described.
3. In a type writing machine, in which the types are arranged on the surface of a
swinging cylinder, the combination of two sets of keys, one set for shifting, and the other
for rotating the type cylinder, a swinging arm or frame to be stroken by the rotating
keys, a swinging segment loosely connected to the said arm or frame and engaging
with a pinion on the type cylinder shaft, a pawl pivoted to the swinging arm or
frame and engaging with ratchet teeth of the segment, and means for disengaging
the pawl, substantially as and for the purposes described.
4. In a type writing machine, in which the types are arranged on the surface of
a swinging cylinder, the combination of two sets of keys, one set for shifting and
the other for rotating the type cylinder, a swinging arm or frame to be stroken by
the rotating keys, a swinging segment loosely connected to the said arm or frame
and engaging with a pinion on the type cylinder shaft, a cam lever pivoted to the
swinging arm or frame and striking the arm of the swinging segment, and means for
actuating the cam lever, substantially as and for the purposes described.
5. In a type writing machine, in which the types are arranged on the surface of
a swinging cylinder, the combination of two sets of keys, one set for shifting and
the other for rotating the type cylinder, a swinging arm or frame to be stroken by
the rotating keys, a swinging segment loosely connected to the said arm or frame
and engaging with a pinion on the type cylinder shaft, a pawl pivoted to the
swinging arm or frame and engaging with ratchet teeth of the segment, means for
disengaging the pawl, and means for actuating the cam lever, substantially as and
for the purposes described.
6. In a type writing machiue, in which the types are arranged on the surface of
a swinging cylinder, the combination of two sets of keys, one set for shifting and
the other for rotating the type cylinder, a swinging arm or frame to be stroken by
the rotating keys, a swinging segment loosely connected with the said arm or frame
and engaging with a pinion on the type cylinder shaft, a pawl pivoted to the swinging
arm or frame and engaging with a set of ratchet teeth of the segment, a catch pivoted
to the swinging arm or frame to engage with another set of ratchet teeth of the
segment and to intercept its momentum, and means for disengaging the said
pawl and the said catch, substantially as and for the purposes described.
7. In a type writing machine, in which the types are arranged on the surface of
a swinging cylinder, the combination of a swinging frame carrying the type cylinder,
shaft, two sets of keys, one for shifting and the other for rotating the type cylinder
means for shifting and rotating the type cylinder by simultaneously depressing a
shifting and a rotating key, a catch connecting the type cylinder frame to a stationary
part of the machine, and means for releasing the catch by the key stroke, substantially
as and for the purposes described,

page_text: 8. In a type writing machine, in which the types are arranged on the surface of a
swinging cylinder, the combination of a swinging frame carrying the type cylinder
shaft, two sets of keys, one set for shifting, and the other for rotating the type
cylinder, means for shifting and rotating the type cylinder by simultaneously
depressing a shifting and a rotating key, a catch connecting the type cylinder frame
to a stationary part of the machine, means for releasing the catch by the key stroke,
and means for swinging the type cylinder frame by the key stroke, substantially as
and for the purposes described.
9. In a type writing machine, in which the types are arranged on the surface of
a swinging cylinder, the combination of a swinging frame carrying the type cylinder
shaft, two sets of keys, one set for shifting and the other for rotating the type
cylinder, means for shifting and rotating the type cylinder by simultaneously
depressing a shifting and a rotating key, a catch connecting the type cylinder frame
to a stationary part of the machine, a swinging lever actuated by the key stroke,
releasing the said catch and striking the type cylinder frame, a catch pivoted to
the swinging lever to engage with the type cylinder frame and to intercept its
momentum, and means for releasing the said catches, substantially as and for the
purposes described.
10. In a type writing machine, in which the types are arranged on the surface of
a swinging cylinder, the combination of a swinging frame carrying the type cylinder
shaft, two sets of keys, one set for shifting, and the other for rotating the type
cylinder, means for shifting and rotating the type cylinder by simultaneously
depressing a shifting and a rotating key, a catch connecting the type cylinder frame
to a stationary part of the machine, a swinging lever actuated by the key stroke,
releasing the said catch and striking the type cylinder frame, a catch pivoted to the
swinging lever to engage with the type cylinder frame and to intercept its momentum,
catches pivoted to the keys to engage with the said swinging lever to intercept the
momentum of the entire swinging system, and means for releasing the said catches,
substantially as and for the purposes described.
11. In a type writing machine, in which the types are arranged on the surface of
a swinging cylinder, the combination of two sets of keys, one set for shifting, and
the other for rotating the type cylinder shaft, means for shifting, rotating
and swinging the type cylinder by simultaneously depressing a shifting and
a rotating key, a swinging arm or frame to be stroken by the rotating keys, a
swinging segment engaging with the said arm or frame and with a pinion on the
type cylinder shaft, another swinging frame carrying the type cylinder shaft, means
for connecting to each other the swinging parts in their swinging movement, and
means for disengaging the said connections, substantially as and for the purposes
described.
12. In a type writing machine, in which the types are arranged on the surface of
a swinging cylinder, the combination of two sets of keys, one set for shifting, and
the other for rotating the type cylinder, a rocking shaft provided with levers to be
actuated by the shifting keys, and means for simultaneously rocking and stopping
the shaft by depressing a key, substantially as and for the purposes described.
13. In a type writing machine, in which the types are arranged on the surface of
a swinging cylinder, the combination of two sets of keys, one set for shifting, and
the other for rotating the type cylinder, a rocking shaft provided with levers to be
actuated by the shifting keys, recesses provided at the under side of the shifting
keys, and pins or rollers secured to the rocking levers and fitting in the said
recesses, substantially as and for the purposes described.
14. In a type writing machine, in which the types are arranged on the surface of
a swinging cylinder, the combination of two sets of keys, one set for shifting, and
the other for rotating the type cylinder, a rocking shaft provided with levers to be
actuated by the shifting keys, recesses provided at the under side of the shifting
keys, pins or rollers secured to the rocking levers and fitting in the said recesses, and
abutments to bear against the tapered ends of the keys, substantially as and for the
purposes described.

page_text: 15. In a type writing machine the combination of a swinging frame carrying a
pair of type cylinders mounted on the same shaft, two sets of keys, one set for
shifting, and the other for rotating the typo cylinders, and means for simultaneously
shifting, rotating and swinging the type cylinders, substantially as and for the
purposes described.
16. A type writing machine, consisting of a swinging frame mounted on a rocking
shaft at the rear of the frame, a type cylinder shaft journaled in the front end of
the swinging frame and crossing the direction of the rocking shaft, a pair of type
cylinders mounted on the type cylinder shaft, two sets of keys provided at the top
of the swinging frame, one set for shifting, and the other for rotating the type
cylinders, and means for shifting and rotating the type cylinders and swinging the
frame by depressing the keys, substantially as and for the purposes described.
Dated this 25th day of May 1897.
WM. P. THOMPSON & Co.,
Of 6, Lord Street, Liverpool, Agents for the Applicant.