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Патент USA US2115991

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May 3, “1938.
Filed Dec. 28, 1955
7 Sheets-Sheet 2
May 3,.1938.
Filed Dec. 28, 1935
7 Sheéts-Sheet 3
May 3, 1938-
Filed Dec. 28, 1955
‘7 Sheets-Sheet 4
,aw.9. .
May 3, 1938.
Filed Dec. 28, 1955
7 Sheets-Sheet 6
‘ FIG.
May 3, 1938.
E. E. KLEmscHMm-r
Filed Dec. 28, 1955
7 Sheets-Sheet 'T
l’atented May 3, 1938
2,115,991, \
Edward E. Kleinschmidt, Highland Park, 111., as
signor to Teletype Corporation, Chicago, 111., a
corporation of Delaware
Application December '28, 1935, SerialNo. 56,496 -
(Cl. 178--36)
- 23 Claims.
The present invention relates to printing tele
graph apparatus employing pneumatically actu
teries in much the same manner, ?guratively
speaking, that this principle has been heretofore
ated mechanisms operated under the control of
known more exclusively in connection with elec
electrical signals.
trical signal distribution. In this connection,
improved methods and apparatus will be herein
disclosed having particularly in mind the means
and method of electrical distribution shown in
U. S. Patent No. 1,998,993.
An object of the present invention is to pro—
vide a ?uid pressure actuated apparatus for re
cording electrically transmitted telegraph sig
nals in which the phase relationship between the
signal receiving mechanism and the ?uid con
10 trol mechanism may be varied, in which pressure
resistance to the operation of control valves is
minimized, and in which intermittent actuation
of a distributor valve affords improved ‘?uid
In the attainment of these and‘ other objects
there is contemplated in accordance with the
present disclosure, novel mechanical embodi
ments featuring an arcuate disposition of typing
elements having presented in close proximity
2o thereto pneumatic actuating pistons. Fluid
pressure obtained from a central distributing
point is selectively conducted to piston chambers
A more comprehensive understanding of the
present invention may be had by referring to 10
the accompanying drawings and by reading the
following detailed speci?cation wherein like ref- "
erence characters are employed to designate sim
ilar parts throughout, and in which
Fig. 1 is a plan view of a preferred embodi 15
ment of the present invention‘ featuring a pneu
matically actuated printer designed for‘ use in
continuous printing on a narrow strip of'tape;
Fig. 2 is a detailed side elevation ‘taken approx
imately on line 2-2 of Fig.‘1.having‘ portions 20
broken away to reveal structural detail of the,
associated with each of the aforesaid pistons
in accordance with the permuted disposition of
a set of selecting plates; the latter elements are
illustrated in Fig. 1;
provided with transverse connecting apertures
ly on line_4-—4 of Fig. 3;
so arranged that in accordance with the dispo
sition of the several of said plates, each plate
having’ two rest positions, there is obtained an
Fig. 5 is a iragmentaldetail elevation of the
distributor mechanism and selector housing
taken" approximately on line 5—5 of Fig. 3;
Fig. 6 is a detail sectional view with parts. 30
broken away taken approximately on line 6—-'-6
30 individual transverse alignment of apertures
Fig. 3 is a front elevation of the mechanism
, F
Fig. 4 is an end elevation taken approximate
through which there may be admitted a. source
of operating ?uid to motivate the particular se ‘ of Fig. 3;
lected one of several actuating pistons.
Fig. '7. is a fragmentary plan view of a print
The aforesaid selector plates correspond in ing mechanism base structure in which portions
have been broken away to illustrate by way of 35
35 number to the number of signal impulses con
stituting the basic permutation code employed. example an arrangement of channels between
In the example described hereinafter, a ?ve im— the selector mechanism and the actuator pis
pulse signal has been arbitrarily selected for the
sake of illustration. The signal impulses may
Fig. 8 is a transverse sectional view taken ap 40
proximately on line 8-8 of Fig. 3;
tion grouped to comprise so-called permutation
Fig. 9 is a detail sectional view taken approxi—
signals. The electrical potentials are designed
to control the admission of ?uid pressure through
slide valve means whence they are admitted suc
45 cessively'to piston chambers associated with se
lector plate actuating pistons whose function con
sists' of‘ the shifting of the aforedescribed selec
tor plates to prepare the ultimate path through
which the operating ?uid is subsequently admit
In the performance of said distributor, cer
tain principles of synchronism control, some
times referred to as start-stop distribution, are
employed for channeling ?uid supply from a com
55 mon source to each of a set of subordinate. ar
mately on line 9-9 of Fig. '7;
Fig. 10 is a plan view of the mechanism viewed
in Fig. 1 in which the distributor is partially in
section and in which a‘ major portion of the
printing machine has been broken away to reveal
the underlying selector housing;
Fig. 11 is a longitudinal section taken approx
imately on line ll-ll of Fig.4;
_ 50
Fig. 12 is a diagrammatic illustration of‘ rep
resentative elements at the present invention and
circuit indications arranged in a succession of
Fig. 13 isfan isometric exploded view of the 55
of the apertures which have been indicated 'II'
‘essential elements which comprise the distrib
utor mechanism;
_at their selector sources leads to one of the‘
Fig. 14 is. an isometric exploded view of the
apertures 22 associated with an actuating piston
duct channeling system leading from the dis
chamber 2| or to one of several other pistons
tributor featured in Fig. 13 to the selector pis- v to be described later which performs an inciden
tons; and
Fig. 15 is a detailed perspective view of a cover
plate used in the selector mechanism illustrating
the distribution of its jets 51.
Referring now more particularly to the draw
ings, the reference character ll denotes a base
structure, the lowermost portion of which is
rectangular, as may be noted from Figs. 1 and 7,
but theupper portion of which is of arcuate con
?guration in the‘ region indicated i2. .Supported
in a nearly semi-circular formation are a set
. of type bars l3 of conventional form and col
lectively pivoted on an arcuate pivotkrod l4
which lies embedded within a_ groove l5 tr'av
20 ersing through the arcuate portion l2 concen
trically. Each type bar I3 is aligned within an
individual slot It and the several slots radiate
tal function auxiliary to the primary purpose
of printing. A system of channels connecting
said apertures II with those indicated 22 is
formed by the composite partitioning of a set .
of shims indicated 32, 33, 34, and I5 separated
by intervening duct plates 36, 31, and 28. These
elements are best illustrated in Fig. 7. From
this illustration taken together with the repre
sentative cross-sections of Figs. 8, 9," and 11, it
will be understood that each plate or shim is 15
provided with openings in accordance with a
plan of distribution affording a continuous pathv
» leading from each of the apertures 3| through
certain one or ones of the plates‘ and shims,
thence horizontallyracross a particular one of 20
the plates 26, 31, or 38 to a point in alignment
with one of the apertures 22, whence the path
continues transversely through the remaining,
from a center common to the arcuate forma
plates and shims, to one of the apertures 22.
tion l2 and its several associated elements.
From Figs. 8, 9, and 10 it may be noted that
the type bars i3 each carries a type slug l1
The selector device is comprised of a set of
and at its lower end is provided with an inte
grally formed projection l8 whose lowermost edge ' contiguous plates, ?ve in number, and of gen
surface has a cam curvature against which there erally similar contour. The top selector plate 39
which aligns with each of two portions of the 30
30 normally rests the foremost portion or nose ‘of its
associated actuating piston l9. Each type bar apertures 3| is provided with a predetermined
I3 is provided with an actuating piston I9 which arrangement of perforations and is capable of‘
two positions during each of which the perfora
> is supported in a vertical position within a cy
lindrical piston chamber 2i, the lower extremity tions of plate 39 are brought into registration
with corresponding ones of the apertures 3!. 35
35 of which extends» through the rectangular por
tion of base II but the upper portion of which The next adjoining plate 4| is provided with
is longitudinally divided by its associated type
bar slot l6. Each piston. chamber “terminates
with a pressure supply artery 22, concerning
which more will be explained later. The amount
of actuating ?uid requisite to the propulsion of
perforations of plate 4|. correspondingly, plate 40
42 is provided with a distribution of perfora
tions arranged to align with half of the perfo
be understood that the transverse type ha:- slots rations of plate 4| during one of its positions
l6 reaching downwardly and across each of the and others of said perforations during its alter 45
chambers 2| are su?lcientiy distant from the native position. In turn, each of the remaining
plates 43 and 44 subserves to continue the per
extremity of movement of each piston to con
stitute nolleakage factor as between its artery foration alignment of a portion of the perfora
tions of its preceding plate so that in all, each
22 and the surrounding atmosphere. The sev
eral type bars l3 are maintained in their upright plate of the group 39 to 44 functions to channel 50
position as viewed in Figs. 8 and 9 because of the path of a particular alignment of perfora
the tension of their return springs 23, one end ' tions into one of two alternative paths. Thus
of which is articulated to a small pin 24 carried by reason of there being ?ve selector plates 39—
by the individual type bar and the other end of 44, there ‘is obtained a total number of selectable
which is linked through an appropriate open-' channels equivalent to the number 25 or 32.
Fluid pressure supply'received through the in 55
ing of which there are several radially disposed,
within an anchor band 25 circumposed about take jet 45, Fig.1l, passes through the aperture
of elbow 46 until it is confronted by the barrel
the. arcuate section l2. The poised radial align
41 of valve 48. In response to a control condi
ment of type bars I3 is assured by the disposi
tion of an arcuate bumper 26 formed of buffer tion to be described later, a supervisory supply 60
of ?uid under pressure is received through con
material and supported coextensively by a frame
worlr 2‘Igof curved metallic strips which in turn duit 49 and permitted to enter the chamber at
are, supported upon a pair of standards 28, see the left of valve 48, urging the latter rightwardly
against the tendencies of its spring 51. When
Figs. 1 and 4, to which are connected ‘the radiat
this occurs, the passageway originating with the
ing ears 29.
pressure supply source 45 is continued through 65
Laminated arteries
the intervening space 52 of slide valve 48 to
To ‘permit of the compact arrangement of the duct 53, thence rightwardly to the central
the cylindrical piston chambers 2|, they are aperture 54. From this point the ?uid pressure
alternately staggered and comprise two arcuate is admitted through the vertical vent 55 to a
alignments, as may be noted best from Figs. 1 distributing chamber 56 with which there com- 70
and '7. Contrasting with this alignment, the municate a plurality of jets 51.
arrangement of apertures from whence origi
The chamber 56 is formed within an internal
nate each of the aforedescribed arteries 22 is ?oating housing comprised of a bottom plate 58
substantially rectangular, Figs. 10 and 15. Each and a cupped cover plate 59. This housing nor
a piston 19 is comparatively small as is also the
distance of movement thereof. Hence it will
apertures multipled with respect to the aper
tures of plate 3! so that during each of its posi
tions, a half portion only of the perforations of
plate 29 are rendered communicative with the
3 i
an‘ almost continuous rotation and without an
mally rests upon an elastic diaphragm 6|. When
appreciable stop during the zero position. This
phase of operation deals of course with matters
of adjustment and timing, the theoretical mode
of operation being one \‘ of cyclic arrest and
- ?uid pressure is ?rst admitted to the central ap
erture 54, its instant responsevis to dilate the
space beneath the diaphragm 6|, urging the ?oat
ing housing 58-59 upwardly in opposition to the
return springs 69, Fig. 8, and against the selector
plates 39-44. This compression seals the ‘sev
The aforedescribed pressure introduction and
its control is a cyclic ‘occurrence following which
the‘sllde valve 48 is returned to its normal posi
tion as viewed in Fig. 11. The pressure which had
been built up in the distributing chamber 56 is
then permitted to be dissipated back through
vent 55, central aperture 54, duct 53, to the inter
vening opening 52, thence out through the bleeder
Shaft 69 extends rightwardly as viewed in Figs.
11 and 13 and is journaled at ‘I9 in a rear plate
‘II of the distributor and at ‘I8 in a foreplate ‘I9
thereof. Intermediate plates "I1 and ‘I9 there
is secured to shaft 69 a collar 8| with which there
is integrally formed a pair of cams 82 and 83,
see especially Figs. 5, 6, and 13. Each ‘cam 82 and
83 controls the actuation of a slide valve 84 and
85 and through these, shaft 69 during its rotation 15
and in the course of a single cycle thereof, effects
a distribution of operating and control ?uid from
a source of supply indicated 86 to several subordi
nated channels as will be described.
The forward wall or foreplate ‘I9 has within it 20
a vertical aperture 81 from which there branch
two outlets, a lower one of which is indicated 88
and an upper one 89. ,The opening 89 comprises
a narrow horizontal slit. Between the foreplate
‘I9 and an adjacent block 9| there is interposed 25
a. spacer plate 92, see Fig. 13. The latter is slotted
‘hole 62.
as at 93 so as to afford a groove between the
eral plates as between each other and also as
between plate 44 and its subja'cent jets 51. There-‘
l0 after and following almost instantaneously the
?uid pressure surges through the vent 55 into the
distributing chamber 56 ‘and continues on through
- one of the jets 51 and in accordance with the dis
position of the several plates 39—44 seeks out a
15 course which terminates in a piston chamber 2|
beneath one of the pistons I9 relating tola print
- ing’ function or one of the other pistons relating
to a collateral'function;
foreplate -‘I9 and the block 9| within which there
is received a blade or selector lever 94 pivoted
The foregoing description relates to the me
chanics of the selector apparatus but the timing
of operation and the intercontrol of the various
selecting and executing functions are supervised
by a pneumatic valve mechanism generally re
at 95 on a pin carried by an extending ear 96 in
tegrally formed with block 9|. One end 191 of
selector lever 94 is rounded and thereat by contactual engagement with an armature 98 of‘ elec-_
tromagnet 99 receives a shift movement counter
clockwise, as viewed in Figs. 2 and 13, during the 35
ferred to herein as the distributor. This device
comprises a driving shaft 63 which is continu
energization of magnet 99 and a return move
ously rotated by an electromotor (not shown)
through a driving gear, train 64. The rotary
ment under impetus of spring I9| during other
times manifesting by its position the nature of
movement is communicated through a friction
40 assembly 65 to a driving disc 66 notched in its
the impressed current impulses which are re
ceived over an incoming line and to which the 40
periphery to receive a horizontally bent section
magnet 99 is electrically connected.
61 of a driven arm 68 which is secured to the
The opposite end of lever .94 is apertured as at
I92 and in its two extremities of motion the aper
ture- I92 of lever 94 comes into registration with
one or another of a pair of slot openings I93 and 45
driven portion of the distributor shaft 69.
-Shaft.69 is withheld in a normal or zero posi
45 tlon which is determined by the angular arrange
ment at which an arm 'II carried by shaft 69,
see Figs. 4 and. 13, encounters the foremost end
of a stop arm ‘I2 pivoted at ‘I3 and urged by a
spring ‘I4 in a direction away from the observer
50 as viewed in Figs. 2 and 4 and rightwardly as
viewed in Fig. 1. Opposing the action of spring
‘I4 is a piston ‘I5 which, during the start ‘interval
of the operative cycle, receives in its piston cham
ber sufficient ?uid under pressure to‘overco-me
55.__._the tendency of spring ‘I4 and to move stop arm ‘I2
‘from its effective position; that is, from the posi
‘ tion whereat the foremost portion of arm ‘I2
I94 which extend transversely through block 9|
and which incidentally are enlarged slightly as
they approach the opposite face of block 9|, as
may be noted from Figs. 11 and 13.
The hori
zontal slot 89 is located midway between the 50
apertures I93 and I94 of block 9| and the width
' .of aperture I92 of lever 94 is just su?icient to
align with slot 89 and either one or the other
of apertures‘ I93 and I94 depending, of course,
upon the alternative conditions of selector lever 55
94. In the illustration of Fig. 13, this lever is
shown in its clockwise extremity whereat it
lies in the path of revolving arm ‘II of shaft 99.
During the major portion of a cycle, the chamber
60 of piston "I5 is without pressure, permitting arm
‘I2 to continue in its effective position.
would connect slot 99 with aperture I94, aperture
Upon the reception of a start impulse, a surge
slots I93 and I94 transposed.
Beyond the block 9| there are presented a pair
of parallel spacer plates I95 and I96 between
of ?uid‘is communicated to the chamber of piston
‘I5, thrusting the latter outwardly, as viewed in
65 Fig. 11, and dislodging arm 12. This frees the
I 93 being non-communicative or, more accurately,
in communication with atmosphere.
The alter 60
native condition would ?nd the relationship of ‘
which there is afforded a su?icient clearance to 65
revolving arm 1| and permits shaft 69 to enter
upon a cycle of rotation carrying with it its sev
eral appurtenances which will be described later.
While this arrangement serves to time the cyclic
70 rotation of shaft 69, bringing the latter to rest
at the conclusion of each rotation, it is feasible
receive snugly the slide valve 84. Through the
central portion of valve 84 are found four open
ings, the upper one is circular and is indicated
that under certain conditions of operation where
transverse openings I93 and I94 of block 9|.
With the slide valve 84 in its upper position,
opening I98 is exclusively in registration with
the electric control signals are permitted to suc
ceed each other rapidly, that synchronism of
75 shaft 69 may be maintained while permitting
I9‘I; the next three are rectangular and are in
dicated I98, I99, and III. Valve opening I99 is 70
presented in approximate alignment with the
the enlarged portion of opening I93, but with 75
the valve 84 in its downward position, said open
ing I08 is in exclusive registration with the en
trlbuting the signal impulses, one course .con-v
tlnues through opening I04, opening I08 of slide
larged portion of opening‘ I04.
valve 84, slot I22, and cavity I23, whence com- .
munication is afforded through the ?ared open
ing I34, narrow slit I35, and any one of. the ?ve
distributive slits I38 .to “I. A secondary chan
neling in this course is controlled by slide valve
84 which during its up position, instead of align
Referring new again to the foreplate 18, at
tention is directed to the outlet 88. vIn registra
tion with this outlet there may be found an open
ing] I2 in spacer plate 92, an opening I I3 in block
' 9|, while in slide valve 84 the pair of openings
I09 and III are arranged alternatively to ,be
10 brought into registration with the continuation
of said duct openings. .
ing opening I08 with slot I22, brings it into reg
istration with cavity I24 and opening I03, pre 10
paring the course which conducts the start im
pulse ?uid surge to the piston 15. This course
may be traced through opening I08 (when the
slide valve 84 is in its upper position), cavity I24,
Beyond valve 94 is a distributor block indicated
“4 which is provided with a series of centrally
disposed slots parallelly arranged in a vertical
15 alignment. .The lowermost slots indicated H5 ducts I25, I26, and I21,/t'hence back through 15
and H6 extend inwardly part way' and thence opening I01, orifice I28, hole I29 to the travers
continue for another distance rightwardly as ing artery I3I, thence out through furrow I32
‘viewed in Fig. 13 and at their remote interior 'to the piston chamber of, piston 15. ' The last
section they are joined by a transverse opening jdescribed course is prepared for the duration of
20 indicated H1. ' A conduit 49 aforedescribed in W a short interval once during each cycle when it 20
connection with the slide valve 48 ‘extends up
is desired to withdraw blocking arm '12 and to
wardly and inwardly into block ‘H4 and con
thereby effect synchronization. Thus it' will be
nects with the interior portions of ducts H5 understood that only duringthis interval will
and H6, preferably in the approximate region slide valve 84 be found in its upper extremity and
of artery II'I.
that during the major portion of the cycle, valve 25
Another pair of ducts indicated -,H8 and II 9 84 may be found in its downward position as
also extend inwardly and rightwardly within will be evident from the contour of cam 82, see
block I I4 and their innermost chambers are mu
Fig. 6. While shuttle valve 84 serves to control
tually connected by a pair of traversing arteries
the introduction of ‘operating ?uid to piston 15,
30 indicated I2I. A duct I20 extending perpendic
incidentally it also functions at a later interval 30
ularly from one of the ducts 'I2I continues out in its cycle to introduce operating fluid for the
of block H4 through an opening I30 in one of a, reproductionv of line surges in accordance with
pair of spacer plates I40 and thence through a
transverse channel I50 in plate 11. Beyond this
35 the channel continues through other portions of
the distributor mechanism which will be dis
cussed subsequently. Another slot indicated I22
and located above slot I I8 extends transversely
through block H4 where on the\ opposite face it
40 is enlarged as indicated at I23 to embrace a
greater surface area in its engagement with slide
valve 85. Above slot I22 there is found an elon
gated cavity I24, and leading therefrom are the
interior ducts I25, I26, and the emergent duct
45 I21. The aforedescribed valve opening I01 may
be made to align with duct I21 and to continue
thereby the channel back through ori?ce I28 of
block 9I, hole I29 of spacer plate 92, thence
through the traversing artery I 3| , whence the
50 channel is projected downwardly and sidewardly
by the accommodations afforded by a furrow I32
in' the forward surface of foreplate 19. Furrow
I32 extends radially over a substantial area of
the face of plate 19 so as to communicate with
55 the _chamber of piston 15 in whatever position
may be assumed by the latter, since the plate
I33 in which the piston chamber of piston 15
is located is movable radially about shaft 69 to
afford orientation in obtaining an adjustment
for the stop or zero position of shaft 59.
Referring again to distributor block H4, it
will be noted that the enlarged cavity I23 of
transverse slot I22 aligns opposite a cooperating
?ared opening I34 which tapers inwardly until it
becomes a comp "ratively narrow slit at the oppo
site face of sli e valve 85 as indicated I35. It
may be observed that the ?ared opening I34
communicates with the cavity I23 at all times
but that the slit I35 comes into registration suc
70 cessively with a series of five parallelly aligned
slits I36 to I4I. Thus there may be traced a
line of communication for conducting ?uid surges
from the inlet 86 through outlet ‘89, thence over
two courses selectively determined by the pneu
matic selector lever 94. For purposes of dis
the signal elements of each signal._ Cam 82 dur
ing the effective interval of its long apex de
presses shuttle valve 84 until a continuous align
ment is effected between-opening I04, I08, and
slot I22. This introduces ?uid under pressure
into the cavity I23 whence it remains communi
cative with the ?ared opening I34 during the
entire transit of shuttle valve 85 which includes 40
the time at which it communicates with each of
the slits I35, I31, I38, I39, and MI. As may be
understood from observing the contour of ‘valve
cam-83, see Figs. 5 and 13, shuttle valve 85 un
dergoes a series of short successive downward 45
movements coming to rest momentarily as the‘
vent I35 is brought into registration with each .
of the afore-enumerated slits I36-I4I. .By
studying earns 82 and 83 together, it will be ob
served that the progressively involute surfaces 50
of cam 83 coincide radially with the apex of
cam 82._ Thus during the distributive portion
of the cycle when shuttle valve 85 is active and
is descending by successive steps, cam 82 main
tains shuttle valve 84 depressed, keeping open 55
ing I08 of shuttle valve 84 in alignment with
the openings I 04 and I22. During this interval
as the electrical potentials are impressed upon
magnet 99, its armature 98 correspondingly shifts
the selector lever 94, causing the opening I02 60
thereof to be alternately presented and with
drawn from registration with opening I04. Dur~
ing the interval in which opening I02 is moved
upwardly out of registration with opening I 04
it is, of course, brought into registration with 65
opening I03 which, as has been noted before,
communicates with a series of openings ‘that
eventually lead back to the piston chamber of
start piston 15. When this occurs during the
distributive portion of a cycle, however, opening 70
I08 is not in alignment with cavity I24 by rea
son of which the path is interrupted at shuttle
valve 84. However, this is not an essential pre
caution for the-reason that any energization of
piston 15 during movements of the cycle other 75
9,110,991 ,
I12 communicates with. opening I63, I13 com
, and do in no wise interfere withthe' rotation of municates with opening I64, and canal I14 com
municates with opening I65. The destination of‘
shaft 68.
Duct II3 terminates at the hinder face,_Fig. each of the canals having an origin in align
13. of block 9|. with- a cupped recess II8, the ment with the afore-enumerated openings I59
diameter‘oi' which is great enough to overlap I65‘ corresponds to the openings indicated I15 to
both‘ rectangular openings I89 and III of slid ' I8I of shim I66. A set of parallel ducts I82 con
able shuttle valve . 84. Through opening I89 tinue the path in registration with the openings
I15 to I19 but opening I8I aligns with an inlet
pressure is communicated to slot II8, ducts I2I
duct I83 which communicates with an interior
1b branch conduits leading to thechambers of the artery I84. A set of ?ve jets I85 branching out
selector operating pistonsto be described later. of the interior artery I84 continue sidewardly
than, the start interval are'atmost ineffectual
Through rectangular opening III ?uid ?owing
through cupped recess II8 continues along slot
r II5, duct II1, out'over conduit 49 to the piston
chamber of cylindrical slide valve 48.
causes the latter to be shifted rightwardly, as
viewed in Fig. 11, and to establish accordingly the
,aforedescribed path for admitting the selector
20 actuating ?uid originating at intake 45.
As may be readily noted, slots H8 and II9
communicate» with'a common duct or channel i
of communication I28 ‘and also slots H5 and
H6 with a common channel of communication
49. The purpose of providing pairs of slots is to‘
establish alternative paths, one of whichis ef
fective during each of the shift positions of
shuttle valve 84 so that pressure previously built
up and accumulated in their respective operat
ing chambers may, during the alternative posi
tion of shuttle valve 84, be relieved through
bleeder grooves such as those indicated I42 and
I56 in block 9|.
Apair of balls I43 and I44, Fig. 4, pivoted upon
shoulder screws I45 and I46 are urged by springs
I41, the former in a counterclockwise direction
and the latter in a clockwise direction. In this
way their sidewardly extending lugs I48 and I49
serve to maintain the shuttle valves 84 and 85
40 ?rmly against their respective cams 82 and 83.
and terminate with abbreviated projections I86.
In alignment with the jets I85 and their pro
jections I86 are a corresponding set of five open
ings I81 formed in a spacer plate I88. The
openings I81 resemble key‘ holes in the manner
that they are associated with laterally extending
notches I89, the extremities of which are adapted
to register opposite the sets of parallel ducts
I82 aforementioned.
Beyond the plate I88 there is found a piston
block I9I which serves as a housing for the sev
eral selector pistons I51. The rearmost ends of
the pistons I51 are provided with reduced por 25
tions or projections as indicated at I92, which
during the retracted condition of their associ
ated pistons I51 are disposed opposite the align
ment of openings I81 and jets I85, serving in
this manner to seal the jets I85. The actuating
impulseswhich, as stated before, are distributed
through the slits I36-I4I, travel through the
openings I59--I64 in shim I58, the canals of
plate I61, the openings I15-I19 of shim I66,
the ducts I82 of block I88, the laterally extend 35
ing notches I89 of plate I88, thence to the space
afforded‘within the openings I81 surrounding
the projections of the rearmost ends I92 of pis
tons I51. Pressure, introduced through any or
the individual paths aforedescribed collectively,
will act against the cross-sectional area of a pis
ton I51 exclusive of the reduced portions indi-,
source 86 through blocks 19, 9I, H4, and 11 as cated I92. This will serve to move the pistons
controlled by the moving elements 94, 84, and ' I51 a slight distance, following which their as
85. The primary object obtained is the introduc— sociated jets I85will be opened, admitting addi 45
tion of permutative current surges into the slits tional pressure therethrough.
The latter force will be referred to for the
I36, I31, .I38, I39, and HI whence they emerge
through individual enlarged canals I5I, I52, I53, sake of convenience as piston operating pressure,
and is traceable from outlet 88, opening I I2, duct
I54, and I55.
Calling particular attention to the illustration II3, opening I89, duct II9, arteries I2I, duct I28,
thence through openings I38, I58, I65, I14, open~
in Figs. 5, 11, and 14, it will be noted that imme
diately behind the distributor mechanism just. ing I8I_, duct I83 to the interior artery I88. The
described there is located a set of ?ve pistons effect of supplying an initiating impulse and
I51. Each piston I51 is capable of assuming two thereafter supplementing it with a general sup
55 positions, one such as that illustrated in Figs. ply pressure permits of a practice whereinv the‘ 55
pistons I51 may be dislodged by comparatively
11 and 14 before actuating current has been in
troduced into the piston‘ chamber and another momentary pulses of ?uid pressure, the operating
such as that indicated in dotted lines in Fig. 14. pressure being supplied through the jets I85. As
The current surges ‘communicated through the a result of this improved method of operation,
60 aforedescribed slits I36-—I4I ?nd their way each it is found that the distributing. element, in the 60
‘to a corresponding one of the piston chambers instant case shuttle valve 85, is capable of operat
There have been described the various pneu
matic courses originating with current supply
‘of pistons
I51. The channeling of these ?uid ing at appreciably greater speeds. Otherwise,
surges is executed 'in the following manner. or where the distributed pulsations might'be ex
Emerging from the ?ve enlarged canals I5I-I 55, pected to execute the entire movement of the
65 the paths continue through a shim I58 where ‘selector setting pistons I51, the time interval 65
canal I5I aligns with an opening I59, canal I52
with an opening I6I, canal I53 with an opening
I62, canal I54 .with an opening I63, canal I55
with an opening I64, and the special duct I58
70 with an opening I65. Sandwiched between shim
I58 and a succeeding shim I66 there is disposed
a plate I61 in which are provided a series‘ of di
vergent canals. "One indicated I68 communi
‘: cates with opening I59, “I68 communicates with
of distribution would require considerably more
time than is necessary in the instant case.
At the conclusion of each selective cycle there
occurs a short interval during which shuttle valve
84 is withdrawn from registration with recess 70
II8 of duct H3 and moved upwardly so as to
come into registration with the bleeder groove
When this happens, pistons I51 are per
mitted by independent spring pressure, to be
opening I6I,I1I communicates with opening I62, restored to their normal position, the displaced 75
?uid percolating back .through its respective
channel, including one of the Jets I35, artery
I84, duct I03, opening 'IOI, canal' I'I4, openings
I65, I50, and I30, duct I20, artery I2I, duct II8,
opening I09, and bleeder groove I55.
The several elements illustrated ‘in Figs. 13
and 14 are preferably assembled and braced to
gether by transversely extending securing vmeans
such as bolts, etc., the illustration of whichvhas
10 been omitted from these ?gures in order to avoid
the unnecessary confounding of the views.
The ?ve selector pistons I51 correspond to the
?ve elements of a conventional ?ve unit per
mutation code, each piston taking its operated
the other hand by the engagement of ratchet
wheel 200 with the foremost portion of the frame
structure II.
The shifting of sleeve assembly 200 is executed
under the primary control of a pair of pistons
222 and 223, the location of which will be easily
understood by observing Figs. 1 and 3. Inter
mediate the piston chambers oi.’ pistons 222 and
223 and pivoted at 224 thereat is a shift lever
225. At one end of this lever a short portion 10
has been bent down and bifurcated as at" 221,
see also Fig. 8. The tines of the bifurcated por
tion'straddle an annular rib 223 integrally formed
with sleeve ‘206. Each of the alternative positions
15 or unoperated position in accordance with the ' of ,lever 225 is detented by the engagement of a 15
marking or spacing attribute relating to a given tooth 229 integrally formed with ,detent spring
signal. The positions of the pistons I5'I are 23I, with notches 232 and 233 formed in the left
immediately communicated to ?ve transfer levers end of lever 225, Fig. 1.
indicated I93-I9'I, see especially Figs. 4, 5, and
,A pair of arteries indicated 234 and 235 in this
20 10. The opposite ends of levers I93-I9‘I engage ?gure supply the actuating ?uid for propelling 20
the set of selector plates 39-44, and each lever ‘ pistons 222 and 223, the operation of one of which
is urged counterclockwise by an individually as
mechanically restores its companion piston to
sociated spring I93, while the several plates 39-44 unactuated or normal position. Each artery 234
are normally urged in their rightward direction "and 235 continues through a selective passageway
25 as viewed in Fig. 10 by individually associated traceable through the selector plates 33-44 afore
springs I99 connected to integrally formed ex
mentioned, and in response to delegated signals
tending lugs associated with the selector plates. a shift operation may be thus executed. In order
' The tension of springs I99 is preferably regu
to permit the exhausting of certain piston cham
lated by adjustment screws 20I so as to be strong
30 enough to return prompty the plates 39-44 after
each setting while yet feeble enough to be over
comeduring'the actuation of pistons I51.
It will be recalledthat following each setting
of the several selector plates, shuttle valve 84
35 operates to admit a surge of selecting ?uid
through conduit 49 andthat when this ?uid
reaches the small central chamber 54, it tends
?rst to in?ate the "space beneath the elastic
diaphragm 8|, causing the plates 58 and 59 to be
40 pressed against the selector plates 39-44 and
— in this way to bind them momentarily in their
set positions. Concurrently, the ?uid pressure
which is found within the enclosure 56 seeks
out one of the apertures 51 which happens to be
45 opposite a selected alignment of openings
through the several plates 39-44, depending of
bers, as in the instant case the chambers of pis
tons 222 and 223, minute bleeder apertures may 30
be provided whose capacity is small enough to
cause no interference with the actuating ?uid
surgesv but is of su?icient proportions to there
after permit the depletion of the ?uid pressure
following the actuation'of its ‘associated piston.
In addition to serving as a medium for case
shifting, platen roller 204 also provides the means
for advancinggthe printing tape cyclically. This‘
is obtained by rotating the platen intermittently.
Figs. 3 and 9 illustrate the construction and lo 40
cation of a mechanism for actuating ratchet
wheel 209 and through it the platen assembly.
This comprises a piston 2| I operating in chamber
H2 and supplied with actuating ?uid through
an artery indicated 2I3. In the regionvmarked 45
2I4 in Fig. _9, the continuation of this artery
course upon the particular disposition of said through the selector plates 39-44 di?’ers in one
respect from the remaining passageways relating
plates. The particular passageway thus se
lected continues through one of the apertures to other of the arteries indicated 3|, in that the
3| and is conducted through grooves in one of openings of the selector plates in the special case
are designed so as to remain in alignment during
the plates 36-38 or arteries 22 until it is ulti
all conditions of the selector plate; thus ?uid
mately led into the piston chamber 2I of a func
tion actuating piston I9. The pressure accumu
pressure is admitted over the course indicated
2| 4-2I3 concurrently with the establishment of
lating in this chamber sends the piston I9 up
wardly against the type bar lug I8, causing the ‘ each and every passageway. Thus it follows
bar I3 to be pivoted about shaft I4 and to swing . that piston 2“ is actuated contemporaneously
its type slug I1 sharply against the printing with any of the other pistons I9.
In moving upwardly, the rim of piston 2“ en
ribbon 202 in‘ the-position in which it traverses
gages a jutting pin 2I5 carried by the pivot screw‘
the printing area behind the guide plate 203.
2| 6 whereat tape advancing pawl 2I'I is articu
Case shift
ated to the supporting arms 2I0. The actuat
The present embodiment contemplates a print
ing movement of piston 2“ in this way stimu
ing mechanism employing plural case print oper ' lates the return stroke of pawl 2| 1. The feed
ations. The type slugs I‘! each carry a pair of stroke, however, is urged by a spring 2I9,which
printing characters, one relating to each of the connects with a downwardly extending arm 22I
cases. The shifting between one and the other that forms partof an assembly with supporting
of the cases is determined by the longitudinal arms 2| 8. As the pawl 2I‘I is actuated by piston
shifting of a printing platen 204. As best re
2II pursuant to'its return stroke, a detent pawl
vealed in Fig. 8, the platen 204 is mounted upon 236 pivoted at 231 and urged by a spring 238 en
a hub 205 which in turn is secured to and ro
gages the teeth of ratchet wheel 209, latching
tatable with a sleeve assembly 206. The latter
is freely rotatable upon the stub shaft 201 and
is capable of longitudinal movement thereupon
throughout a distance determined on the one
75 hand by its abutment with washer 208 and on
it against any tendency to return in a direction
opposite its tape advancing direction. of rotation.
The printing ribbon is preferably carried upon
a pair of spools 239 pivotally supported upon posts
240. One of the spools is a supply spool and‘ the 75
other a winding spool so. as to permit the ribbon
to advancenew areas during regular printing op-'
erations. Conventional types of spool actuating
mechanism may be employed for this purpose, a
and continued over symbolic courses 254 or 255.
The former course, indicated 254, ultimately
leads to the artery I34 from which a set of ?ve
jets I85 leads to the chambers of pistons I51.
speci?c embodiment of which is not deemed es ' Because the jets I85 are normally sealed, how
sential in understanding the principles of the. ever, the e?ectlveness of this supply is contingent
present disclosure.
upon the actuation of one or more‘of the pistons
Referring now more particularly to Figs. 1, 8, I51 in response to an initiating ?uid surge re
and 4,}attention is directed to the tension roller ceivable through the selector openings ISO-Ill
10 assembly comprising a pair of friction rollers 2“ and HI. After having become actuated,- how
and 242 pivotally carried by a lever arm 243 ; ever, the pistons I51‘ are moved. their entire‘ (118
which is' pivoted upon a ?xed pivot screw 244. tance of travel by the augmenting supply of power
The latter is anchored to av sidewardly and up
fluid receivableover course 254 and thereafter
wardly extending projection 245 integrally formed
A channel member 249
serves to guide the incoming tape preparatory
15 with guide plate 203.
' to its approach to the ?rst tension roller 242, and
it is secured to the lever arm 243 so as to operate
by mechanical linkage diagrammatically indi
cated 256 the movements of pistons ‘I51 are 15
imparted to , their associated selector platesv
Thereafter, .?uid is admitted over course 255,
together therewith. The assembly including which functions ?rst to force bottom plate 55 and
channel member 249, arm 243, and roller 2“ is _ cover plate 59' upwardly to clamp together the
maintained in its counterclockwise extremity as
selector plates 39-44 and thereafter to seek
viewed in Fig. 3, by the in?uence of a tension out "a. prepared channel including one of the
spring 241 articulated to the lever 226, Fig. 1, apertures 3|, arteries 22, and ultimately the
and to. a binding post 248 carried by arm 243, “selected piston chamber of one of the pistons ll,
25 Fig. 1.
2I I, or 222.
In the illustration of Fig. 12, a rudimentary and
simpli?ed diagram has been featured employing
30 several constructional vrepresentations and con
ventions in order to facilitate a comprehensive
While the presept invention has been explained
and described witlicontemplation of a particular
embodiment, it is noteworthy that numerous
modi?cations and variations may be instituted
without departing from the spirit or scope thereof.
. Accordingly, it is not intended to be‘ limited by
understanding of the present invention within a
single diagrammatic concept. A su?icient re
the speci?c language of the foregoing speci?ca
semblance has been invoked with regard to some
companying drawings but to be permitted in
stead a latitude of interpretation as indicated by
the hereinafter appended claims.
35 exemplary details in order to, suggest in each
case the corresponding structure which is more
accurately illustrated in the remaining views.
The reference character 99 indicates an elec
tromagnetic selector element which is located in
a signalling line and which responds to the
tion nor by the particular illustrations in the ac
What is claimed is:
1. In a device for channeling pneumatic cur
rent, a main body having a. groove and affording
thereat opposite parallel surfaces, a reciprocable 40
current pulsations by the attraction and release ' valve supported insaid groove having wiping en
of its armature 98. This movement on the part
of the armature 98 is communicated to selector
lever 94, which by spring IN is made to follow
faithfully the movements of armature 98. Dur
ing its alternative positions, the aperture I02
comes into alignment with one or the other of
the openings I03 or I04 and accordingly con
tinues a path leading from outlet 89. Fluid con
50 ductor 249 symbolically represents the path origi
nating in the opening I03 and thereafter a sec
ondary selection is eifccted by shuttle valve 84.
At the proper time interval in each cycle, this
path is continued through ducts I25, I26, and I21,
55 thence out through opening I01, following which
the path is represented by ?uid conductor 25I
which leads to the piston chamber of start-stop
piston 15. Thus it will be seen that when shuttle
valve 84 is in its upward position as determined
60 by cam 02 and when shaft 69 is at rest, the ad
mission of a ?uid impulse through opening I03
acting through piston 15 supplies aninitiating
gagement with each of said surfaces and com
prising ,a ?at body having a-central opening with
adjoining solid portions, said main body having
conduit channels traversing said groove in regis 45
tration with'said ?at body, and electromagnetic
means for moving said ?at body laterally accord
ingly to present or withdraw its said opening
with respect to said conduit channels.
2. In a telegraph communication system, a de
vice for converting telegraphic signals into corre
sponding ?uid surges including a main body hav
ing a groove and conduit channels traversing said
groove, 2. blade element laterally movable within
said groove and in wiping engagement with the 55
sides thereof and having a central opening pre
sentable into registration with said channels, and .
electro-responsive means for moving said blade
3. In a telegraph printing apparatus, a plural
ity of type carriers having multiple type charac
ters; a platen shiftable into alternative alignment
stimulus by withdrawing stop arm 12 from the ' corresponding with each of said characters, and
path of revolving arm 1I.
Fluid surges admissible through opening I04
travel ‘through a conduit symbolically represent
ed and indicated 252, where under the in?uence of
shuttle valve 84 and opening I09 thereof they are
electro-pneumatic means for shifting said platen
comprising a lever articulated to said platen, a 65
pair of pistons supported in piston chambers and '
admitted over symbolic course 253 to the ?ared
?uid supply with each of said pistonchambers,
and routing means for alternatively associating 70
said conduits with said source of ?uid supply.
4. The combination'set forth in claim 3 in
70 opening I34 where, by the movement of shuttle
valve 85, the pulses are successively distributed
to the slits I36--I39 and MI. Meanwhile, the.
disposed in opposition to each other for shifting
said lever, conduit means connecting a source of
movement of shuttle valve 85 also regulates the v which said routing means includes a set of con
admission of holdingjluid pressure originating
75 at source 85 and controlled through cavity III
tiguously disposed selector plates having permu
tably arranged openings transversely thereof and 75
electro-pneumatic actuators- for variously posi
valve intermediate said members and longitu
dinally slidable therebetween having transverse
openings movable into and withdrawable from
‘said transverse openings of said members, a con
trol cam carried by said shaft, and spring means
parallel surfaces, said body having a plurality of , for urging said valve against the periphery of
. tioning said plates to afford an individual align
ment of said transverse openings.
5. A device for routing fluids comprising a main
body having a groove which affords opposite
branch channels terminating at one of said sur
faces with individual spaced terminal openings,
said bodyahaving ‘an artery terminating at the
other of said surfaces in a proximity equidistant
from said spaced openings, a valve plate movable
within said groove and having an opening co-'
extensive with said artery terminal and each of
said spaced ~openings individually, and electro
magnetic means for moving said plate to associate
with said artery each of said spaced openings se
6. The combination set forth in claim 5 iii
which said electromagnetic means comprises a
20 magnet winding electrically connected with a sig
nal communication line, and an armature in
?uenced by said winding for moving said plate
7. In a pneumatic distributing mechanism, a
25 body having two parallel channels terminating at
a common surface and‘ adjacent each other and
having a supply source channel opening in a
surface opposite said parallel channels, and a lever
said cam.
12. A mechanism for distributing fluid surges
comprising a rotatable shaft, a valve of flat ma
terial movable longitudinally, a closely defining
housing surrounding said valve having an open
ing transversely of said valve flared at one side
and tapering to a reduced slit at the other side
thereof, a portion on one side of said valve hav
ing a supply duct communicable with said ?ared 15
opening, a portion on theopposite side of said
valve having a plurality of slits parallelly ar
ranged in an alignment corresponding to the path
of said reduced slit in said valve, and an ac
tuator for bringing said reduced slit of said valve 20
into registration with said plurality of slits of
said portion comprising a cam carried by said
shaft having short dwells distributed in equally
spaced radial distances on the periphery of said
13. A mechanism for controlling the passage
of fluid through a plurality of parallel channels
comprising a pair of terminal blocks having
forcontrolling the connection between said sup- 1 transversely thereof a plurality of channel ways,
a shuttle valve traversing said channel ways and 30
30 ply source channel and said pair of parallel chan
nels including a valve portion having an opening
therethrough'of size to embrace said supply chan
nel and either of said pair of parallel channels to
the exclusion ’of the other of said pair of parallel
35 channels, said lever having wiping engagement
with said common surface and said opposite sur
8. The combination set forth in claim '7 in
‘cluding an electromagnet having an armature for
40 controlling the actuation of said lever, and spring
means ‘for urging the continuous association of
said lever and said armature.
9. In a device for selectively controlling the pas
having openings therethrough longitudinally
spaced in accordance with a predetermined ar
rangement for successive registration with ad
joining terminals of said channel ways, spring
means for urging said valve in one direction, a 35
rotatable cam shaft, and a cam carried on said
shaft for‘ urging said valve in an'opposite direc
tion, said cam having dwell portions correspond
ing to each registration of said certain openings
and its associated channel way, and means under 40
the control of said valve for cyclically releasing
said shaft.
14. In a telegraph printing mechanism, a plu
sage of fluid from a sup-ply source to each of a ' rality‘ of type actuating pneumatics, a'tape feed
45 plurality of channels, a body affording a surface actuating pneumatic, a set of selector plates hav 45
at which~terminate the ingress openings of a
plurality of branch channels in spaced relation
each to each, said body affording an arterial
channel for said supply source opposite said
50 branch channels, a controlling lever presented
intermediate the terminals of said arterial and
said branch channels in wiping engagement with,
eachof theadjoining surfaces thereof having a
plurality of selective conditions, said lever com
55 prising a ?at portion having an opening trans
versely thereof and movable to associate said
arterial channel with each of said branch chan
nels individually during each of its said select
able positions.
10. In a signal distributing mechanism, a ro
tatable shaft,a supporting plate, stop means for
arresting said shaft carried by said supporting
plate, a pneumatic actuator for releasing said
stop means, and means for changing the angular
65 position in which said stop means effects the
arresting of said shaft comprising a member co
operating with said plate having a channel
through which fluid is conducted to said pneu
matic actuator, and an arcuate groove terminat
70 ing said channel and communicating with the
chamber of said actuator angularly through its
distance of movement.
11.A device for controlling and distributing
?uid surges comprising a control shaft, a pair of
75 members having transverse arteries, a shuttle
ing transverse openings permutably arranged,
certain of said openings for individual conditions
of selective alignment and certain of said open
ings selectable under multiple conditions of
alignment of said plates, means responsive to 50,
telegraph signals for transversely positioning
said plates, and conduit means for connecting
said individually selectable alignments with said
tape actuating pneumatics and said multiple se
lectable alignment with said tape feed actuating 55
15. In a telegraph printing mechanism, a plu
rality of type actuating pneumatics, a tape feed
actuating pneumatic, and a pneumatic selector
apparatus comprising a set of plates having per 60
forations permutably arranged for individual
alignment in accordance with each of said type
actuating pneumatics and for multiple disposi
tion alignment in accordance with said tape feed
actuating pneumatic.
16. The combination set forth in claim 15 in
cluding means for simultaneously actuating said
tape feed pneumatic concurrently with the ac
tuation of each of said type actuating pneu
17. A tension roller assembly including a tape
guide and a tension roller mounted integrally
upon a supporting structure and pivoted thereon
intermediate said guide and roller spring means
for urging said roller into operative position from 75
which the assembly is retractable by manipula
18. A mechanism for converting telegraphic
the chamber of the other and disconnected one
of said pair of pistons with an avenue of escape.
20. In an automatic printing mechanism, a
permutation signals into corresponding , ?uid
plurality of type carrying members, pneumatic
surges including a housing affording a main chan
nel for conducting a source of ?uid supply, said‘
actuating means for said members, a rotatable
platen for supporting a continuous web of ma
terial and for backing it to receive printed im
tion of said guide.
channel terminating opposite a pair of branch
channels for affording alternative courses thereat,
a control lever pivoted to reciprocate transversely
of said branch channels at its juncture with said
main channel having an opening transversely
pressions from said type carrying members, ten
sioning means for urging the frictional engage
ment of said web of material with said platen, 10
and a pneumatic device for rotating said platen
thereof ‘ of size ,to align either of said branch
step by step during each printing operation and
channels with said main channel and having ad
for thereby advancing said web of material com
prising a ratchet wheel associated integrally with
said platen, a pawl, and a pneumatic piston for 15
jacent solid portions for concurrently closing the
other of said branch channels, a shuttle valve
having openings therein each associated with one
of said branch channels and capable of being
aligned with its corresponding branch channel
alternatively, a rotatable control shaft parallel
ing the course of said main and said branch chan
nels having a stop element, a stop arm normally
presented in the path of said stop element, a
pneumatically actuated piston for releasing said
stop arm having a‘ chamber communicating with
one of said branch channels, a distributor valve
slidable longitudinally and having an opening
transversely thereof of extensive bore at one side
to communicate with the other of said branch
channels and of reduced bore at its other side 30 to communicate with each of a plurality of dis
tributive channels, cams carried by said shaft for
actuating said valves in timed relation with the
angular rotation of said shaft, and an electro
magnetic device responsive to telegraphic signals
for ?uttering said control lever accordingly.
19. In a printing mechanism, a printing platen,
a plurality of type elements having alternatively
engaging and. actuating said pawl having a'pis
ton chamber communicating with a source of ?uid
supply common to all of said pneumatic actuat
ing means.
21. The combination set forth in claim 20 in 20
which said pawl is spring urged in the ratchet
actuating direction and said pneumatic piston is
directed to return said pawl in the opposite di
22. A ?uid distributing organ for cyclic per 25
mutative operation comprising a main member
affording longitudinal passageway. a shuttle hav
ing, openings transversely thereof, said shuttle
being slidable through said main member in a
direction transverse to said passageways, and ro 30
tatable means for moving said shuttle to align its
openings with divers ones of said passageways
_ 23. In a pneumatically powered control unit,
a plurality of pneumatic actuators allocated to 35
the performance of individually actuable opera
tions, a special pneumatic actuator assigned to
effective printing impressions, a mounting for ’ the performance of an auxiliary operation ac
said printing platen shiftable so as to present
said platen to align with said printing impressions
alternatively, and pneumatic means for shifting
said platen mounting comprising a shift lever
having a pivot intermediate- its length, a pair of
pneumatic pistons disposed at opposite sides of
45 said lever pivot, and ?uid channeling means for
connecting to the chambers of said pair of pis
companying the operation of a number of said
plurality of pneumatic actuators, a set of selector 40
plates having transverse openings permutably ar
rangeable to afford transversely individual se
lectable paths for said plurality of actuators, and
additional openings for affording a selectable
path under multiple conditions of alignment of 45
said plates to said special pneumatic actuator.
tons alternatively a source of ?uid supply and for
concurrently establishing communication between
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