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Патент USA US2133056

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Oct. 11, 1938'.
A: LAHL
2,133,056
TELEGRAPH TRANSMITTER
Filed Dec. '29, 1956
_' 5 sheets-sheet 1 ‘
‘
Oct. 11, 1938“.
I
A. LAHL
4
2,133,056
TELEGRAPH TRANSMITTER
Filed Dec. 29, 1936
5 She'ets-Sheet 2
r
‘
BY
-
INVENT'OR
‘
ATTORNE Yf
Oct. 11, 193s.-v
2,133,056
A. LAHL
TELEGRAPH TRANSMITTER
Filed Dec. 29, 1956
5 Sheets-Sheet 3
INVENTOR
9 9 ° All?ulalé
BY
ATER‘NEYf
Oct. 11, 1938.
A. LAHL
2,133,056
TELEGRAPH TRANSMITTER
Filed Dec. 29, 1936
5 Sheets-Sheet 4
IN[/5N TOR
Aqko: 4J1
BY
.
ATTOPNE XS‘.
Oct. 11; 1938.
A, L‘AHL
TELEGRAPH
'
2,133,056
TRANSMITTER
I
Filed Dec. 29, 1936'
Q
‘
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‘
5 Sheets-Sheet 5
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‘BY
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‘3602
/ /NVEN7%P
Patented Oct. 11, 1938
~V 2,133,056‘
UNITED STATES
V
PATENT ’ lorries ‘ g
2,133,056
_
TELEGRAPH TRANSMITTER
Alfred Lahl, Frankfort-on-the-Main; Germany,
assignor to .Telefonbau und Normalzeit AktiJ ' -
engesellschaft, Frankfort-on-the-‘Main, Ger
many; a corporation of_Germany
‘
I
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_ Application December 29, 1936, Serial No. ‘118,100
.
'
In Germany December-'31, 1935
<
- V 112' Claims.‘
(01.17849) V
maintenance or non-maintenance of the key in
instruments having-permutation members which the depressed position. A further key can then
This invention relates ‘to keyboard telegraph
areiselectively displaced by depression of the keys
and having. a motor driven cam assembly, the,
be struck during the transmission of the second
current impulse sequence.
'
'
; cams of which are set in accordancewith the " r. In order thatjthe invention may be properly
setting of the permutation members. The cams ‘ understood and- be more readily carried into
5.1
> remain set during rotation of the assembly and e?ect, an eXampleo-f construction in accordance
act upon a transmitting contact, thus causing therewith will now be described with reference
the ‘emission of a signal determined. by the key ‘to the accompanying drawings, in which
'
.
1.0: which was depressed._ In the instruments with
_ Figures '1 and‘ 1A show diagrammatically and mi
which the invention is concerned, the permuta
in perspective a part of the telegraph transmitter
tion members are spring loaded, that is to say,
the normal and in the operated position re-‘
they are normally under the action of springs by
7 means of which they are displaced on depression
Figures 2 and 2A show diagrammatically and
spectively.
71.5. of a key;
‘
,
.
.
g
Y
.
_
inyperspective
the distributor
in the normal
of the
andtransmitter
in the operated
and
If, in anin'strument of the above kind, a second I positions
key is depressed ‘before the transmission'o‘f the the means which form the auxiliary device pro
signal determined. by the depression of the ?rst vided in accordance with the invention.
key has. been completed,>another set or combina- "
20: tion of permutation members is displaced and,
unless the second key is held depressed until the
transmission of the ?rst signal is completed and
the cams have been re-set, an incorrect signal i transmitted.
2,5
'
. The object ofrthe invention is to overcome the .
necessity for keeping the second key depressed
in. instruments of the above kind having spring
loaded per-mutation members.
l
i
This object is achieved in accordance with the
39‘ inventionby providing an auxiliary mechanism
' which is set in the operative position by the de
pressionof a key‘and which holds the interme.-»
diate members in the position in which they are
set by a key independently of the-position of that,
key until the setting of .the contactactuating
"a cams in accordance with the setting of theinteli
mediate members has been ‘completed,
I
The invention thus makes it possible for-two
Figure:3 shows a detail of Figures 1 and 1A to
a larger scale;
‘ ‘
.
a
~
20
., Figure 4 isgan end view to a largerscale of the
distributor of Figure 2 showing the various cams,
and
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.
.
'
s
Figure 5 is a development of these cams shown
in Figure 4.
a
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25
Only one key, ‘the key A of the telegraph trans
mitter, is shown. This key is pivotally mounted
on a pin l and, ‘in the normal position (Fig. 1)
is pressed against a bar 2 by a spring 3 held in
the clamp '4. The rear part of the key lever ex- 30
tends beneath the teeth of the permutation mem
bers a—e and beneath‘a‘rail 5. The permutation
members a-i-e are mounted for movement on the
rodsli and 1; Each of them is provided ‘with a.
spring}. "In the normal'position )(Fig. 1), the 35
permutation members _a+-e lie with their upward;
ly‘projecting lugs 9 abutting against a common
stop rail 10. This stop rail I0 is pivotally mounted
. keyiy, to be struck in quick succession and to be '. on- the rod » II and, in the normal position, is
4&9‘ rel/eased again during the time in ‘which the cur
locked against movement by the catch l2 which 40
rent impulse sequence selected by the ?rstkey is pivotally mounted on the pin l3 and, in the
is still beingjsent out, withoutendangering the position under consideration, is supported‘by the‘
correct-transmission of either of>the impulse se-:_ lug l4 on theqrail 5 which engages beneath‘ its
quences. By means of the auxiliary mechanism, arm l5. Thelug l4 (Figure3) is pivotally at-‘
4;; the impulse sequence selected by the second key. tached 'to‘ the rail 5 which is itself pivotally 45
' is stored 'up'in the intennediatemembers while‘ mounted at l5. On depression of the key A, the
the signal sequence selected by the ?rst key and ' ‘rail 5 is swungupwards about its pivot I6 against
stored up in the contact actu'ating‘members isi the action of its spring [1 so that the arm l5 of
being sent out. When, at the end of'the‘revolu
the catch'lZ is liftediby theglug I 4., The lug l4
cc tion. made by the contact actuating members] eventually comes clear of the arm l5 so “that the 50
the‘ latter are returned to their’ normal position." ‘catch l2 can,‘ if desired, return to its normal po
they 'areiautomatically caused to make a further - sition under the action of the spring‘! 8 even if
V revolution owing to the new setting ‘of the "inter- j a key is still depressed. The catch‘ I2 releasesv
mediate members which has already been ‘e?ected' ‘j the stop rail l0 so that it can turn on its pivot
55 and_:which .is maintained independently-{10f the.
pin I’! under the action of the springv l9 and the 55 ‘
2
2,183,056
permutation members a-‘e can move under the
action of their springs 8 in so far as they are not
restrained from so doing by their teeth coming
against the arm 29 of the key lever (Fig. 1A).
On release of the depressed key, the rail 5 re
sumes the position shown inFigure 1 without
moving the catch l2, the lug |4 being pressed
When the stop rail is pivoted, the arm 43 is moved
so that the pawl 49 is pulled back by the spring
42 and the pawl 38 can engage with the ratchet
wheel 37 and cause the shaft 22 to rotate with
the shaft/36 (Fig. 1A). The tail 44 of the pawl
39 is thus brought into a position in which it can
be acted upon by the cam 45 on the cam disc 39
and is brought back into the position shown in
Fig. 1 in which it will provide an abutment for the
10
Asignal corresponding to the depressed key is' clutch pawl 39' when the latter comes round again. 10
The stop rail ;| 9 is connected by 'a connecting rod
emitted through the agency of a rotary distribu
46 to a stirrup 41 which is pivotally mounted at
tor of the type ‘of’ that shown in U. S. Pat
48. ‘Shortly after the beginning of the rotation
ent No. 1,983,960 of Max Amann. This distribu
tor comprises a rotatable shaft 22 carrying at one of the shaft 22, the stirrup 41 is pivoted by the
15 end a set of movable cams 23a—23e which act on cam 49 on the head 25 and the connecting rod
the transmitting contact 24 through the lever 25 46 returns the stop rail H! 'and'thepermutation
' members abutting against it from the position
' (Figure 2).
The cams 23av,_23e are slidably mounted in a ‘of Fig. 1A into the normal position shown in Fig. 1.
When the rail I9 is swung by its spring |9 its
block 26 on the shaft 22 and'can be moved
20 outwards therethrough parallel to the shaft 22
arm 43 also acts upon a two armed lever 59 (Fig 20'
back against the action of its spring 2| (see Fig
ure 3).
'
by the compression springs 2'|a—2'|e acting
through the axially displaceable rods 28a—28e.
ure 2) which serves for the simultaneous opera
tion of ?ve hooks 5|a,--5|e_ associated .with the
levers. 32a—32e. These hooks 5| have elongated
The rods28- are, however, in the normalposition,
kept back by locking discs 29a—29e through
25 bayonet slotconnections 30. The discs 29 are
holes 52 in them by means of which they are ar
ranged in a row on a rod 53. They are pressed
mounted for rotation on the shaft 22 and can'be
towards the associated levers 32 by the teeth of
turned through ‘a small angle against the ac
tion of the springs 3| (only one is sho'wnin Fig- '
a comb-like leaf spring 54 in the normal position.
They do not however, touch the levers 32 or re
.25
ure 2), in order to release one or another of the strict their pivotal movement. The hooks, 5|
are guided in holes in a rail 55 which is pivotally 30
29 relatively to the shaft 22, a series of unlatching mounted on the rod 53. When the arm 43 is
lifted, the lever 59 is swung clockwise so that its
levers 32a—32e, one for each permutation mem
ber, is provided, the noses 33 of which normally right hand arm (Figs. 2 and'2A) lowers the rail
lie in the path of movement of the noses 34 on 55.and the hooks 5| against vthe action of the
the discs 29 when the shaft 22 is rotated. The spring 56. The hooks 5| are thus brought either 35
30 rods 28. For producing this rotation of the discs
in Figure 2 as long as the'permutation members
behind the associated levers 32 or into the grooves
51 of these levers, according as the levers in ques
remain in the normal position. When, however,
tion are in their normal position or in their actu
levers 32 remain in the normal position illustrated
a
a permutation member moves forward, the mem
74.0; ber ,c, for example, as shown in Figure 2A, the
~associated lever I2, is swung back by the abut
ment against the tail of the permutation mem
ber with its nose 33 clear of the associated disc
34. Consequently, during the early part of the
rotation of the shaft 22, the levers 32 which re
main in the normal position strike the noses 34
onrthe discs 29 associated with'them so that the
latter are thus turned relatively to the shaft and
the rods 28 associated with them are released and,
50,. under the in?uence of their springs 21, displace
the associated contact operating cams 23 out of
v4.5:
ated position.‘
-
The arrangement described above operates as 40
follows: On depression of the key' A, the arm 29
of the key lever is lifted against the action of its
spring and enters. a space between two succes
sive teeth of the permutation members a-e.
On complete depression of the key, the arm 20 45,
pivots the rail 5 and this, in‘ turn, through the
lug I 4, swings the latch | 2 which, up till now,
has} been holding the stop rail l0 against move
ment. The stop rail 10 being thus released, those
of the permutation members a--e which are not 50
held back by the arm 20 are moved by their
nected to the associated permutation members
springs 8 ‘to the right and swing the levers 32
associated with them out of the path of movement
a—e by springs 35 and upon further rotation of
of thelocking discs 3|.
the block 24. The levers 32 are resiliently con
55.1 the shaft 22, the levers 32 are pushed back by]
'7 the discs 29, the latter then being compelled to
7
The stop rail I9 is swung on'its pivot pin by the 55
permutation members and by its spring l9 so that
share in the rotation of the shaft. During the
the arm 43 is lifted and-the pawl 40 released.
rotation of the shaft 22, the cams 23 which have
Under the pull of its spring 42,- the pawl
40 swings counterclockwise and releases the
clutch pawl 38 which is caused by its spring 4| 60
to engage with the constantly rotating ratchet
wheel31. The shaft 22' is thus clutched to the
shaft 39 and is rotated thereby together with the
rods 28, the discs 29 and the contact operating
been pushed out of the head 26 by their springs
so ,7 actuate the contact 24 through the lever 25.' The
" shaft 22 is driven at appropriate times by a 'con
‘stantly' rotating hollow shaft 36 through a
, clutch formed by the ratchet wheel 31 which is
?xed to the 'shaft_36 and the pawl 38 which is
65 pivotally mounted onla cam disc 39' ?xed tol'the
shaft .22. For the sake of clearness, the ratchet '
cams 23 and the control cams‘ 45 and 49. .
.
6.5
For the purpose of illustration, it will be as
Wheel 31 and the pawl 38 have been shown at the sumed that on depression of the key A, only the
front of the cam disc 39. They should, of course, ' permutation members b, c; d are moved, the
in order thatithe ratchet wheel may be ?xed to members a. and e being held back by the'arm 29;
70 the shaft'39, be at the back ofthe cam disc. In In that case,.thelevers 3211, 320, and 32d are dis
the normal position, the clutch pawl 38 is held ' placedwhile the levers 32d and 326 remain in the,
out of engagement with-the ratchet 3‘! by a pawl. path of movement of the locking discs 29. When the
:49 against ,the'actio‘n of its spring 4|, the pawl arm 43 rises, the lever 59 is swung clockwise and
39 being held in position against the action of . the rail 7755' is lowered together with the hooks 5|.
kits spring 42 'by an arm 43 of the stop rail l0. ,7 The hooks 5lb, 5|c and 5|d are thus brought into 75.
3
2,133,056
the grooves 51 in the levers 32b, 32c and32d
(as shown in
2A, for the lever 320) while the
hooks 5la and 5l6 come opposite the backs of the
the contact actuating cams 23 haveialready been
levers 3211' and 326. .As long as the rail 55 re
re-setting member (not shown) which, when one
of ‘these cams is brought .opposite it, pushes it
back through the discs 29 against the action of
the springs 21. The discs 29,- under the influence
mains depressed, the levers 32b, 32c, 326 are'held
by the associated hooks 51 independently ofthe
position of the permutation'members. The key
A can therefore be released. Shortly’ after the
beginning. of the rotation of the shaft 22, the
set for that series. ‘ The cams 23ers re-set after
they have acted on the lever 25 by means of a
of their springs :3l, then spring into their
normal positions in which they lock thepams in
'10 noses 34 on the discs 2% and 2-96 strike the. the inoperativeposition. . At the end of the revoe
levers 32a and 326. These two discs and only lution of the shaft, the clutch pawl 31 strikes the
these two are therefore held back by their, corre
head of the pawl 40 so that it is brought outiof
sponding levers 32 and, in consequence of the ro
engagement with the rotating ratchet wheel 3! '
tation of the shaft 22, are displaced against the and the shaft is de-clutched.
,
action of their springs 3|. Therods 28a and‘ 28?
are thus released and under the influence'of their
springs are moved axially and push out the con
tact operating cams 23a and 236. On further
If another key is struck during the rotation of
the shaft 22 and after the return of the permuta
tion members, say at the beginning of the second 2
half of the revolution, the permutation members
rotation of the shaft 22, themomentarilyjstopped are again'released so that, in the manner-‘al
20 discs 29a and 296' are carried‘ I'Glll'ldr‘?lld the ready described, those of the levers 32 which are
levers 32a and 326 are pressed back against the ‘ associated with permutation members which are
actionof their springs 35.
'
.
not held backpby the arm 20; are ‘swung out
When the shaft 22 is at rest, the lever 25 is of the path‘of movement of the discs 29. rThe
pressed against the cam 58 which is an im
rail 55 and the hooks 5| are lowered by thelever.
25. movable part of the head- 26, by ‘the spring 59. 50 so that the levers 32 are locked in the positions
During the ?rst part of the rotation of the shaft they at that instant occupy. The newly struck
22 the lever 25 slips off the cam 58 so that the key can now be released-—even before the ?rst
transmitting contact 24 sends out the start im» revolution of the shaft 22 is completed; The
pulse. This occurs during the?rst 1/;th of the levers 32' are held locked by the hooks 5| until,
30 revolution made by the shaft 22.’ During each of a at the beginning of'the second revolution of the 30.
the next ?ve 1/7ths of the revolution ofthe shaft ‘ shaft 22, the discs 29 and the contact actuating
22, the lever 25 is actuated by one or another cams 23‘ have been set again in accordance with
of the vcams 23. As, in the case ‘under con¢ the setting.‘ of the levers. It is only then that
sideration, only the cams 23a and 236 are pushed V the permutation members and the levers 32 are
.out from the head 26, the lever 25 remains, dur
ing the 3rd, 4th and 5th sevenths, intheposition
assumed for the sending-out of the start im-v
pulse,’ but'is shifted by thecams 23a and 238 dur
ing-the 2nd, and 6th sevenths into the normal
returned by the cam 49 and the stirrup 41.
When thesecond keyis struck,‘the pawl 40 is re-,
leased so that the clutch pawl 38 is not disen
gaged at the end of the ?rst revolution.v The‘
clutch'thus remains closed and the second revoe'»
;_ position shown in Figure 2, in which position ity ,lution follows immediately on the ?rst;
is held‘ by the ?xed cam‘GSdurihg the last;
I claim:
seventh.
>
,1. A oftelegraph
operatingtransmittercomprisinga
keys, a transmitting contact,
During the ?rst %th of the revolutionmade by ‘ rality
the shaft, the cam 45- strikes the tail 44' of the a- motor,‘ a rotatablezbody, a' clutch device, con-_
~. pawl 40 (Figures '1 and 4) and swings the latter 7 trolled .by saidikeys fol-coupling said body to-said
against the action of. the-spring 42 into‘ its’ motor for the‘ duration of‘ one revolution, mov
normal position in which it lies in the path of able'camsl carried by said bodyfor in?uencing
movement of'the head of the clutch-pawl, 38. said transmitting contact on ‘rotation of said;
Shortly followingthis, say during the'2nd'7th , body, a plurality of spring-loaded permutation
5.01 of the rotation,the.-cam_‘ ~49_j swings the stirrup 4-‘! members selectively releasable for displacement,
(Figures 1 and 2) which, through the connect?’ by their springs von actuation of said keys, 7 a
ing rod 46, restores the stop rail 10 andthe plurality ofintermediate members adapted ,to be
permutation members to their .normal positions. set by said permutation members whereby toset'
This brings the arm 43 again in front of the said movable‘cams at the beginning of each rev
551 pawl 48 so that the latter is held ‘fast. As the
olution of said rotatable body, means for lockingv
lug 14 (Figure 3) atthe endof its movement, _ said intermediate members in the set position, ,
bears'laterally against the arm, l5 of the catch means responsive to the depression of a key for
l2, it is now free to move even if, at this instant, ‘ bringing said locking means into operation‘ and
the key Ais still depressed; The catch l2 locks . means adapted to be influenced by said rotatable
60 the stop rail l0 again in its normal position.’ If
body afterfsaid movable cams have been set by
the key A is subsequently released, the lug l4 ‘ said intermediate members for‘making said lock cc
will again come under the arm‘ 15 as it returns ing means inoperative, said last mentioned means
into the normal position.
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,
During the restoration of the stop rail I!) to
the normal position, the lever 50-is also released
by the arm ‘43. The rail 55 is then'lifted by-the
spring .55and the'hooks 5|b, 5lc and 5M re
lease "the associated levers 32 so that the latter
and the displaced permutation members return
being independent of the depression of an oper
ating key.
'
=
2. A telegraph transmitter‘ comprising a’ set;
of ‘operating keys, a transmitting -contact,,;a mo- - .
tor, a rotatable body, a clutch device controlled,
by said keys for coupling said bodytosaid-mo- ,
tor for the duration of one revolution, movable
cams carried by said body for in?uencing said
The restoration of the permutation members transmitting contact on rotation of said body, 70
and of the levers 32 is effected during the ?rst a plurality of spring-loaded permutation mem
halt of the revolution made‘ by the shaft 22. bers selectively releasable ,for displacement by
The selected current impulse series is neverthe- ' their springs on actuation of said keys, a set of
to their normal positions. '
less correctly sent out because theldiscs 29 and
intermediate members connected to said per-‘
2,133,055
mutation members for setting said movable cams contact on rotation of said body, springs acting‘
4.
at the beginning of each revolution of said ro
tatable body in accordance vwith the setting of
said permutation members, means controlled by
said permutation members during'their move
ment determined'by'said keys for locking said
intermediate’ members in the set position, and
means controlled by said rotatable body for re
leasing said iocking means after said cams have
10. been. set,‘ said releasing means being independent
of- the'depression of an operating key.
‘ ’ I3.‘ 'A telegraph transmitter according to claim 1
in which each of said'intermediate members com
prises a notch and said. locking device comprises
15 a‘ plurality of locking members, one for each
intermediate member and adapted to be engaged
insaid notches of said intermediate members.
'4. A telegraph transmitter comprising a trans
' mitting contact, a motor, a rotatable body, a
.20 clutch device for coupling said body to said mo
tor for the duration of one revolution, movable
cams carried byisaid body-for controlling said
transmitting contact on rotation or‘ said body,
means carried‘by said body for locking and un
25 locking said movable cams, a set of operating
keys, a-rplurality or“ spring-loaded permutation
members selectively releasable by their springs
on'actuation of said keys, a'set of intermediate
members adapted to be set by said permutation
30 members on movement of said permutation mem
bers in one direction, springs connecting said in
termediate members individually to said permu
tation‘ members, said cam locking and ‘unlock
ing means comprising stops,~ said intermediate
35 members vbeing adapted at the commencement
of, the rotation'of the rotatable body to act on
upon said cams, discs carried by said body for
locking and unlocking said, cams, each one of
said discs in?uencing a di?erent one of said
cams, said discs ‘being mounted for rotation
about the axis of said body, a plurality of springs
each. adapted to hold a di?erent one of said
discs in a position for locking the cam'associated
with it, a set of operating keys, a set of permu
tation members controlled by said keys, a set 10"
of intermediate members connected to said per
mutation members and adapted to set said cams
in accordance with the setting of said permuta
tion members, stops on said discs adapted to be
influenced against the action of said springs by
said intermediate members at the beginning of
the rotary movement of said body, 1 said discs
when thus in?uenced being turned to release the
corresponding cams for movement under the ac
tion of’ said springs, a device for locking said 205
intermediate members in the position in which
they are set by said permutation members, said
locking
device
embodying
hooked ' members
mounted for rotation and for translation, each
of said hooked members being adapted to lock‘ 25
one of said intermediate members, a'controlling
bar for turning said hooked membersrinto their
iocking position, springs acting upon said hooked
members adapted to resist translation of said
members, said springs being stronger than said
springs acting upon said discs and therefore pre
ventingv a movement of» an intermediate member
locked by its hooked member when a‘ disc on
being in?uenced by said intermediatemember
is turned against the action of its spring, means
responsive to the depression of a key for actuat
ing. said controlling bar of said locking device,
said stops‘ for settingvsaid cam locking and un
locking means in accordance with the setting of a means actuated by said rotatable body after the
actuation of said discs by said intermediate mem
said‘ permutation members responsive to the de
pression ofsaid keys for locking said’ interme-' bers for returning said controlling bar, said re
turning means being independent of the depres'diate members in the set position against‘ move
ment ~by7-said springs and. means actuated byv sion of a key.
8. A telegraph transmitter according to claim
said rotatable body after the actuation of said
[comprising springs acting upon'said permu
' cam locking and unlocking means by said inter
V 45.
'
mediate members for returning said locking de
tation members in their normal'position, means 45
vice, said‘ returning means “being vvindependent
of" the depression of a‘ key,‘said intermediate
members comprising notches and said locking de
vice comprising hooked members one for'each
for locking said permutation members against
the action of said springs, means for releasing
such locking by actuation of said keys and means
for returning said bars to their normal position,
said last mentioned returning'means being ac 50'
intermediate
member,
said
hooked
members
being’
50
tuated by said rotatable body on its being ro
adapted'to‘ engage insaid notches.
_
‘ 5. A telegraph transmitter according to claim
tated.
>
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*
V
r
9. A telegraph transmitter according to claim 7
’ 4, in which said hooked members are ‘mounted’
"'for'rotation and for translation; and comprising comprising springs, acting on said permutation
members in their normal position, a, movabie 55;
55* springs acting upon said hooked members to ree
'sist translation thereof and guide bar ‘adapted pawl acting, upon all said permutation members,
to ,turn‘said hooked ,members intov and out of ' means for locking said pawl, means for releas
engagement with said notches.
ing said locking by actuation of said keys, said
6. A telegraph transmitter according to claim , pawl being connected to» said returning means
60
60 4, in which said lockingmeans comprise :a guide ' actuated by said rotatable body.
' 10. A telegraph transmitter according to claim
bar, guide passages in said guide bar one.’ for
each of said hooked members, said- hooked mem
7, comprising springs acting upon said permuta-_
bers being mounted for rotation‘ and for trans
tion members in their normal position, said per
lation, a comb-like spring common to all said? ,mutation members being provided with projec-_
tions and recesses adapted to cooperate with the 65
said keys, a movable pawl 'for' locking said per
mutation 'members against the action of said
springs, means for locking said, pawl, a bar adapt
ed to be in?uenced by said key, a lug on'said
‘ bar adapted to move said locking means out of 70
influence of said returning means.
the locking position, said last mentioned bar be
7. A telegraph transmitter comprising a trans
mitter contact, a motor, a rotatable body, a clutch ing actuated by said keys after their engagement
device for coupling said body to said motor for' with said permutation members, said pawl be
ing connected to said returning means actuated
one revolution of said body, movable cams car
by said rotatable body. ‘
75
75 i' ried by said body for controlling said transmitter
hooked members adapted to resist translation of
said members, said guide bar being adapted to
turn'said hooked members respectively into and
out of engagement with said notches under the
in?uence of an: operating key and‘ under the
2, 188,0 5 6
5
11. A telegraph transmitter comprising a trans-~ of, said body are in?uenced by said intermediate
mitting contact, a motor, a rotatable body, a members, hooked members for locking said inter
clutch device carried by said body for coupling mediate members in the set position, means actu
said body to said motor, movable cams carried ated by said pawl for controlling said hooked
by said body for controlling said transmitting members, means actuated by said pawl for actuat
contact, movable means carried by said body for ing said clutch device, means actuated by said
setting said cams, a plurality of operating keys, rotatable body on its rotary movement shortly
a plurality of permutation bars, spaced teeth on' after the actuation of said cam setting means by
said permutation bars, recesses adapted to co
said intermediate members for turning said pawl
10 operate with ‘said keys, springs‘ acting on said ‘ into its lockingposition, a spring acting upon said
10
permutation bars in‘ their normal position, a‘ means for locking said pawl, said means being
movable pawl 'for locking said permutation bars adapted to lock said returned pawl independently
against the action of said springs, means for look
of the position of the key depressed to unlock
ing said pawl, a further bar adapted to be in
said pawl.
15 ?uenced by said keys after their engagement with 7
12. A telegraph transmitter according to claim
said permutation bars, a lug on said further bar 11,, in which said lug is movably mounted on said 15
adapted to move said locking means out of the a bar and is adapted after having moved said
locking position, a plurality of intermediate mem
means for locking said pawl out of locking posi
bers adapted to be set by said permutation bars tion omdepression of a key to release said lock
and thereby to set said cam setting means, stops ing means for movement into its locking position 20
on said cam setting means of said rotatable body when said pawl has'been returned. ,
which at the beginning of the rotary movement
'
ALFRED LAHL.
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