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Патент USA US2129065

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.Sept. 6,1938.
7 ’
_|_ N_ LOOP
2,129,065 '
Filed July 6, 1957
5 Sheets-Sheet 1
guy}? 96, 5.30050,
d‘f?-w 3.
Sept. 6, 1938.
Filed July 6, 1957
3 Sheets—$heet 2.
Sept- 6, 1933-
.1. N. LOOP
Filed July 6, 1957 .
5 Sheets-Sheet '3
V Tin-1U
M-w w.' IIET-l-E
BY My? 6; ‘W1
6, 1938
12,129,065 ,
roa 2,129,065
PRINTING: onsmo'rnas
Joseph N. Loop, Washington, D. 0.
Application July 6, 1937, Serial No. 152,212
12 Claims.
(01. 197-1) ‘
My invention relates broadly to apparatus for
typing and printing and more particularly to a
construction of printing head and selective oper
ating mechanism for marking or, printing
One of the objects of my invention is to pro
vide a compact mechanism operative within
short limits of movement for printing alpha
betical and other characters at high speed.
10- Another object of my invention is to‘provide
an inexpensive construction of printing appa
ratus .for high speed operationwherein a multi
a view similar'to Fig. 5 showing'the actuated
position of the apparatus as seen on‘line'B-S in‘
Fig. 11; Fig‘. 7 is a detail elevational view of the
tooth and, rack connection shown in Figs. 5- and
6; Fig. 8. is a detailed representation of the-char- 5
acter printed with the apparatus in the position
shown in Fig. 6; Fig. 9 is a vertical crbss-sectional
view similar to Fig. 5 taken arbitrarily 'on line
9—9 of Fig. 1; Fig.1“) is a vertical'jgross-sectional
view taken substantially on line inf-l0 in Fig. 1: 10
Fig. 11 is a vdetail vertical longitudinal view of
the apparatus’, with an element bfl’thefassembly
in actuatedposition as shown i_ii§_ E16 ; Fig. 12 is
plicity, of marker members are selectively actu
ated in accordance with the character to be a detail‘plan view of the portion ‘o'ithe’r‘apparatus
shownin Fig. 11. with the same element of the 15
15 printed, other ‘members being. maintained _ assembly
in actuated position; and
13' is a
A further object of my invention is'to provide detail longitudinal sectional View of‘o ‘e of the
a multiple arrangement of marker members in.
The apparatus otf‘iny invention is“ intended
rectangular formation, adapted to be actuated.
primarily for use in‘ high speed'telegraphic 'com- 20
20 simultaneously, with a plurality of meansjndi
vidually seiectively'operable for determining the agmunication' systems. Mechanisms heretofore
members to be actuated for printing‘a’ desired employedin this‘respect, including type bar de-.
impact elements.
vices, ,bulky carriage structures and actuating
meansiilfhave beeri limited to speeds-below the
25 vide a printing head m'ovablewith respect to the. capability of e?icient operatorsewhereas the 25
printing surface, and having a'plurality of s'elec.-. apparatus oi’ my invention will'iunctionqat speeds
tor bars and a single actuating bar enacting up to one hundred,‘ and’?fty 'wQi-ds“’a‘ minute,
"‘ I
Still another object of my invention is to pro
is‘welhbéiidiid the morw‘e?icient typing
therewith'iall movable witii limited displacement which
speeds and jevefniabove rec,
Ftyping vspeeds.
for high speed voperation.
Insofar as the printing met: at m is concerned, 30
still another objector my invention is to pro
vide rigid supporting means for a printing head.
and light and unrestricted anti-friction,beari11g
contact for all movable elements so as ‘to main
tain highcspeed, trouble free operation in the
35- printing head.
the features whichhontributertc"the high speed
facility of my invention‘ include a'carrlage struc
ture bi relativelyv small
and the arrange
inent of character deteri’i'iining, ~ marking or
' printing control plates operative in- common with 35
Astill further object of my invention is‘topro- . respect to a limited multiplicity‘ of marker or
, ,vide broadly a constructionoi typingand print- ‘ printer members. ‘ Stationary mechanisms for >
. 'ing apparatus‘ iorhhigh speedoperation involvingv selection and printing‘fbperations‘ are,‘ "arranged
, a minimumoi partsfadapted for'automatic and; 1 for coaction with the printing'he'ad' in short
.‘yzquichmovements ‘e?ected‘ with a’ minimum of
~ 4oscoordinated1operation at highspeed.
in the
further. objects
and arrangements
‘i or. my ' ,
accompanyins_._drawings,in‘ which: ‘1 v ‘
lost motion.‘ The constructionof the printing
~mechanism. of ‘my; invention is adaptable for
‘manufacture at 'low' cost on"a“ quantity produc
‘ -, J‘ tionlbasis' inyview'of the'relative simplicity of the
45 Figure, 1 is a; comprehensive top :planview mechanism with respect to" prior‘ art devices. . 45
1‘ vpartly in ‘section... of. theuprintl‘ngi hearlf'oi my.___, 1“ Rei’erringito‘ theldrawings ‘more details, Fig.
; l . invention; Fig. 2 is, an} enlarged {vertical lo‘ngitd: ' 1 shows‘rin plan view the complete assembly 0!
dim! “view . oi the ‘ printing ¢ .portionnwith‘ parts‘ . printer mechanism which can be divided for con-'
* ‘broken away and shownjin sectionjasnon line -1 sideration, fjinto three portions: theprinter head
50 2-4. lnQFlg. 3;’, Fig.3 a" a.,lioriz0ntalfsectiona1,' Hi; the selection'or conditioning'section 2; and 50
‘ v view‘taken ,substantiallylon
Fig. 2;‘1] theimpact vor'actuatim; portion 3. Broadly, the
Fig. 4'is aggreatly enlargediacevievtofthe print? I arrangementincludes -a"multipliclty' 01’ 1 marker
1 i. , ins terminus otthe when:
or ?mifinven'. ' members iorjjrods‘jl in'ithe printer head vI. a like
‘ .tion; Fig. 5 is a vertical 'cro'ss-‘tectional' view ' ‘multiplicity"o?intermediate' push rods'ilin the
' p
‘as takenarbitrarilyonlinel-linl‘lg.1;1"lg.6ia
conditioning section 2. and a like multiplicity of u
striker ‘pins 6 carried in the actuating portion 3.
Normally the members 4, 5. 6 are respectively in
alignment, but means are provided in the selec
tion orv conditioning section 2 for determining
which of the marker rods are to be actuated.
Such means, in the form of my invention dis
closed, comprise a plurality of marking control
plates ‘I mounted on the push rods 5 between end
plates 8 and 8', and actuating bar members I
10 individual to the plates ‘I. A guide plate II is
provided adjacent the end plate 8' to facilitate
plates 8 and 8'. The arms of control. plates 1
rest on the spacer washers I8 and are guided. _.
within the limits of adjacent spacer plates 22 upon '
the individual displacement thereof, as shown
more clearly in Figs. 5 and 6. The lower end of
spacer plates 22 serve to guide the individual
actuating bar members 9 into engagement wi
the respective control plates ‘I.
As shown in Fig. 10, the guide plate I I is formed
with diagonal slits Ila through which the rods 5
pass and along which they are adapted to be
the operation of the control plates ‘I on the bent, as will be further described. The marking
or printing control plates ‘I differ individually,
rods 5.
The printer mechanism I, 2, 2, is mounted with and two ‘examples thereof are shown in Figs. 5
and 9. The plate shown in Fig. 5 is adapted to 15
15 respect to a platen Ill, carrying- a paper sheet I2.
The- printing head I is rigidly mounted on rod provide the letter “U" and is designated ‘In, and
members I5, as shown more clearly in Figs. 2 the plate in Fig. 9, the letter "I" and is designated
and 3, by means of the upright plates I6 and I6’ ’ 11. Referring to Figs. 5 and 6, the plate ‘In is
which in turn support a frame member I‘I con
provided with slots ‘Ia and ‘lb of different extent.
20 stituting the base of the printinghead I. Plates
In Fig. 5 the plate is shown in normal position,
I6’ and 8' have downwardly ?ared extensions maintained so under the action of an individual
thereon carrying rollers engageable with the sup
spring member 29 supported with others of the
porting rods Il, I4’ for reciprocatory movement
of themechanism on the rods I4, ll’. The end
same form from a frame structure 30 attached to
upwardly extending portions of end plates 8 and
25 plates I and 8' are fixed in spaced relation on the
2' carried on rod members I5, as shown in Figs. 1
rod members I5 and the marking or printnig con
trol plates ‘I are supported thereon in the manner
and 5 especially.‘ The slots ‘Ia, it will be noted,
are short and extend upwardly only at an angle
from the rods 5, so that any movement of the
, plate upwardly will displace the rods 5 passing
30 ably mounted on the rod members I5 as indi-» therethrough. On the other hand, slots ‘lb extend
cated in Fig. 12, and adapted to be actuated by a both upwardly and downwardly, at an angle from
striker arm I! in the printing operation.
the rods 5, so that movement of the plate in the
shown in Figs. 5 and 6,'in separate spaced rela
tion. The impact'or actuating portion 2 is slid
Referring particularly to Figs. 2-4 the printer
head I comprises a multiplicity of small tubular
35 guides 20 clamped in a close rectangular forma
tion adjacent the end of the frame member I‘I,
between portions I‘Ia and I'll) thereof and the cap
plate 2 I. At the other end of the base II are pro
vided supporting plate members 22 receiving the
40 tubular guides 20 in spaced relation. The marker
rods 4 extend through the tubular guides 20 and
. terminate evenly at the openings of the guides
adiacent the paper I2. An inked ribbon'2l is
provided._in the form. of my invention shown, be
46 tween the ends of marker rods 0 and the paper
so that pressure of the rods against platen I0
direction of the slots‘ upwardly will not displace
the rods 5. In the plate ‘In, it will be noted that
these slots ‘lb are in the form of a U. and the
rods thus undisplaced by movement of the plate
‘In, as in Fig. 6, are the rods actuated to print a
“U" on the paper I2.
In this operation, only the downwardly extend
ing portions of the slots ‘ID are involved; the
upwardly extending portions of slots ‘lb, together
with slots ‘Ia, provide means whereby all the rods
I may be displaced upwardly with respect to the
plate ‘In by others of the character determining
printing control plates 1 in order to print one or
another of the characters besides “U". The control
produces an inked mark on the paper l2v in the 1
plate 1:, for example, provides for displacement
relative position of the marker rod actuated.
upwardly of certain of the rods I which is eiiected
through the upwardly extending slots ‘Ia and por
tions of ‘lb in plate ‘In. correspondingly, plate ‘I1
is provided with upwardly extending slots la and
slots ‘Ic having upwardly extending portions to
accommodate the upward displacement of certain
of the rods 5 by the plate 1a. For convenience
in manufacture, upwardly extending slots ‘Ia may
be connected with the downwardly extending
portions of aligned slots ‘Ib and lc, without alter
ing the manner of operation of the plates. The
nature and function of slots Ila in guide plate II
Combinations of such dots form the characters
printed, as illustrated in Fig. 8 for the letter "U".
as will hereinafter be more fully considered. A
ribbon guide and support mounted on the base I1
is provided at 25, and suitable ribbon feeding
means are employed.
The opposite ends of
55 marker rods 4- extend beyond the tubular guides
20 and are provided with collars 26 sweated or
otherwise fixed therein and individual coil springs
21 operative between a plate 22 and the collars
20 to maintain the marker rods 4 retracted. Rods
l terminate a certain distance within the collars can now be more clearly understood as essentially
20 and are met by the ends of push rods 5 which providing for the upward displacement of any‘
also are ?xed in the collars after passing through and all of the rods 2 by the printing control plates
aperturesrin the. plates I‘ and It’. when actu I'l, while maintaining substantial alignment of the
ated, push rods I thus directly transmit motion Push rods 5.
to marker rods 4, and springs 21 are immediately
The plate ‘In has been described as being in
e?ective to restore the. rods to normal position
displaced position in Fig. 8. ' Displacement is ei
so that smooth action is assured.
fected'by diagonally upward movement of the
corresponding bar‘ member I which is accom
The push rods I extend from the plates II vand
Ii’ through a broad-opening in end plate 2, the plished at substantially a 45° angle by any suit
70 control plates ‘I, an opening in end plate I’, and able means, which may be a selector mechanism 70
guide plate I I, and terminate evenlyadjacent the ' operated by a multiple impulse telegraphic code
ends of striker pins 2. In order to maintain the
control plates ‘I in separate spaced relation, spacer
plates 22 are arranged alternately with spacer
75 washers II on rods I! and clampedbetween end
signal, a manual keyboard, or remote control
electromagnetic mechanism. The printing mech-‘
anism is reciprocatory on rods Il, N’ in steps
corresponding to each printing space and with 75
an automatic return function. The bar members "purpose of separate springs and individual striker
9 extend crosswise of the machine in the direction pins with adjustable tension is to facilitate print
of movement of the carriage, and ‘are provided ing characters over uneven vsurfaces with equal
with angular recesses 9a corresponding to the clearness, and to ‘enable ‘adjustment for wearing
steps of movement of the carriage. ' Each plate ‘I characteristics in individual push rod and marker
has a ‘projection 1d adapted to be engaged in the rod combinations.
, The striker arm l9 returns quickly after mov-*
recesses 90. in‘ its respective bar member. As il
lustrated inl'Fig. 7, the‘ recesses 90 are formed ing forward a distance su?icient. to give a good
with an obtuse angle, one side of which is ing‘ printing impression, allowing striker vpin as
10 ciined at substantially 45°, or normal to thedir'ec- , sembly 3 and operated push rods 5 to return
tion of actuation: of the bar member." .Tliis‘f‘s'ide
is adapted to engage a ‘similarly inclined edge of
angular projection ‘Id to provide a normal abut
ting contact for shiftingitheplate 'l.‘v The adja
15 cent sides of the recess and‘, the projection are.
formed at an angle offiili'irom'the face of the
member so as to avoid friction from rubbing con
tact between these‘si'de‘s while the actuating sides
are moving into‘ abutment, ‘the corresponding
to normal unoperated positions.’ Immediately
thereafter‘ on printing functions, the printing
head assembly is moved to the right one space,
in the direction indicated by the arrow “4| in
Fig. 3, ready to print the next character. This 15
brings the projections under the plates ‘I in posi
tionsto be engaged by the next notches 9a in the
actuating bar members 9. When the end of a.
line of ' printing has been reached, a carrlage‘re
sides being engaged'at the same moment for em
cient operation of the device.
Considering a plate ‘I in displaced position, as
turn‘ function returns the printing head to the 20v
in Fig. 6, the arrangement of the push. bars "-5
adjacent the ends of the striker pins 6 isvshown
particularly in Figs. 11 and 12, Fig; ll being'in
elevation and Fig. 12in plan, with parts broken
and shown in section‘. The rods remaining in‘
alignment with striker‘ pins‘ 6 are adapted to
drive the corresponding. marker rods 4 which hit
the paper i2 through‘the inked ribbon 24, when
‘the, striker arm 19 is actuated. The impact 0!;
actuating portion 3 v,of the printer includes a
acters may be printed by an inked typewriter
ribbon, as shown, but the structuremay be modi
?ed so that tubes 20 and marker rods 4 may be 25
beginning of the llneand platen ill with paper 1
I2 is turned by a line feed function. The char
utilized for liquid inking or any other suitable ‘
marking means may ‘be employed. Springs 21'
also operate to return push bars 5 to unoperated
position,‘ limited by collars 26 as well aszto with
draw marker rods 4 from printing contact.
Plates Hi, It’, have ‘holes which ?t snugly about
push rods 5 ~and are aligned in such a manner‘that
when a printing control plate ‘I is released by a
frame structure comprising plates 3| and 32 con
nected by double bentportions 32a of plate 32. bar 9, the push bars “'5,‘which are made of. spring
Also, plate 32 has rearwardly extending arms 32b material, immediately go back into line with 35
for engagement by the striker arm l8. Plates 3| . striker pins 6, guided by the-slots in guide plate
ll, under their own spring "tension. In other
and 32 are slidably mounted on rod members [5’,
as shown in Fig. 1, by apertures in the portions words, when printing control plates 1 are oper
32a of plate 32. Coil springs 38 are carried be ’ ated certain push bars 5 aré‘bent out of the way
of striker pins 6. Thel'holes for push bars 5 in 40
40 tween the end plate 8’ and, the impact portion by
.the rod'members l5, and are effective to maintain plates l6, it’ are aligned so as to reduce'bindin
the .push bars vwhich ‘are operated to a minimum
the frame structure retracted, with plate 32 rest
ing against retaining collars 31 secured by pins
.38. .In' this position, striker pins 6 are slightly
spaced» from the adjacent push rods 5', allowing
any of the rods 5 to be displaced. The striker
, arm is is arranged for operation in coordination
with the actuating bar members 9 so that ime
pact is transniittedto the marker rods 4 instantly
upon the conditioning of push rods 5 by the se
lective operation of any one of the marking or
printing control plates 1. A separate control
plate is provided for each character which may
so that their‘ endwise movement will be un
restricted. '~As'to push bars 5 which are bent
aside, a bind might be found in their passage 45
through "the holes in plates l6, it’, but as push
bars are bent out of line to prevent their end
wise‘movement, a bind in such instances is not
detrimental but helps to prevent any motion of
unoperated push bars.
Thus, while I have described my invention in a
certain preferred form, I desire it to be under
stood that modi?cations may be made therein,
be printed and the plates may’be interchanged
and that no limitations upon my invention are
55 with a minimum of labor if itiis desired at any
time to provide different characters, or, where a
intended except as maybe imposed within“ the
scope of the appended claims.
code signal is employed to actuate selector ap
What I claim as new and desire to secure by
paratus, to provide a di?erent response to a given
Letters Patent 0! the United States, is as follows: ,
code combination.
1. Printing mechanism including a vihultiplicity
of printing elements, striker means cooperative
, ,
In Fig. 13, I have illustrated illial'ticularly by
way of example the structure of one of the striker
pins 6, which includes a collar member 38 sweated
or otherwise ?xed to the ‘pin 8 and a coil spring
39 operative against the collar. The collar mem-,
ber 38 is loosely mounted in an, aperture in plate
3| with the collar portion thereof limiting its
outward movement. The other end of pin 8 is
therewith for moving said printing elements to
marking position, and separately actuated print
ing control means cooperative with the said
printingoelements for determining the number
and arrangement of the printing elements actu
ated by said striker means. _
2. Printing mechanism comprising in combina
con?ned in the central bore of a sleeve member 40 ‘ tion, a multiplicity of printing elements, actuat
which is mounted by screw threads in the plate
70 32. In operation, then, ‘plates II and 32 are
moved forward as one, and the striker pins 6 on ,
abutting push rods 5 transmit motion there
through- to marker rods 4. At the limit of the
‘ stroke, pins 6 are forced into the bores of sleeve
75 members 40 against the force of springs 2!. The '
ing means therefor, and separately constituted
means operative with respect to said printing '10.
elements for preventing operation of certain of.
said elements while permitting actuation by said
actuating means of others of said elements in a
predetermined formation.
3. Printing. mechanism comprising in combina
tion, a multiplicity of printing elements, a plu
rality of character determining means operative
with respect to said printing elements and actuat
ing means individual to said means, and striker
means for printing through certain of said ele
ments as determined by a selected one of said
_ character determining means.
4. Printing mechanism comprising a frame
bers,-said marker rod members .being projectible
to print through said inked ribbon on an adjacent
printing surface.
8. Printing mechanism including a multiplicity
of printing elements, actuating rod members indi
vidual to said printing elements, and means for
selectively determining the rod members to be
operated comprising a frame including parallel
extending bar members, a- plurality of plates sup
structure, a multiplicity of tubular guide mem
10 bers mounted evenly in compact rectangular ported on said bar members and apertured to 10
arrangement at one end of said frame structure, pass said rod members; the apertures in said
means for supporting the other ends of said plates being in the form of upwardly extending
tubular members in spaced relation, rod members diagonal slots, and said rod members being resili
extending through said tubular guide members, ent so that movement of any one of said plates
may effect displacement of the rod members with 15
15 actuating means cooperative with said rod mem
bers, and means cooperative with the spaced rod respect to the others of said plates, rendering such
members for preventing operation of certain of rod members inoperative, each ofv said plates
said members while permitting actuation of others having downwardly extending diagonal slots in
a di?erent predetermined formation permitting
in a predetermined formation.
5. Printing mechanism comprising a frame
structure reciprocatory' with respect to a printing surface, said structure being movable in
spaced steps in printing relation to the printing
surface, a grouped multiplicity of printing ele
ments mounted on said frame structure, a plu
rality of character determining printing» control
plates carried by said frame structure and oper
ative with respect to said printing elements, actu~
ating means individual to said plates mounted
apart from said frame structure and coextensive
with the reciprocatory movement thereof, and
actuating means for said printing elements in
cluding a striker arm mounted apart from said
frame structure and coextensive with the re~
ciprocatory movement thereof.
6. Printing mechanism including a printer head
assembly comprising a base structure,‘ a multi
plicity of tubular guide members mounted evenly.
in compact rectangular arrangement at one end
of said base structurepmeans for mounting the
other ends of. said tubular members in spaced
relation, rod members extending through said
tubular guide members and having portions
thereof projecting at the spaced ends of said
45 tubes; collar members ?xed to said projecting
portions of said rod members, individual spring
means, operative against said collar members
mounted on said base structure, for maintainingv
the opposite ends of said rod members retracted
within said tubular guide members and pro.
jectible against the action of said spring means.
7.,Printing mechanism including ‘a printer
head assembly comprising [a base structure, a
multiplicity of tubular guide members mounted
55 evenly in compact‘ rectangular arrangement at
one end of said base structure, marker rod mem
bers extending through said tubular guide mem
bers and projectible-at the ends thereof, a ribbon
support and guide carried by said base structure
at the said end thereof, and an inked ribbon
disposed in said support and guide and extending
over the openings of, said tubular guide mem
the rods passing therethrough to ’ remain in 20
normal position upon movement of the plate up
wardly in the direction of said slots, said normally
disposed rods being operable for actuating the
' corresponding printing elements.
9, Printing mechanism-as set forth in claim 8 25
and including a guide plate fixed to said parallel
extending bar members in back of said control
plates, said guide plate being apertured by up
wardly extending diagonal slots'passing said rod
‘members and permitting displacement of said 30
rod members with respect thereto in the direction
of said diagonal slots.
10. Printing mechanism including a multiplic
ity of printing elements, and means for actuating
said printing elements comprising a striker pin 35
assembly slidably mounted with respect to said
printing elements, striker pins in said assembly
individual to said printing elements, spring means
individual to said striker pins, and individual
means for adjusting thevvtension of said spring 40
11. Printing mechanism including a multiplic
ity of printing elements, a plurality of character
determining printing control plates operative
with respect to said printing elements, and actu 45
ating means individual to said plates comprising
a notched actuating bar member and a projecting
toottxh on the respective plate cooperable there
12. Printing mechanism asset forth in claim 11, 50
withthe actuating bar member adapted to move
at an acute angle into engagement with the re
spective character determining plate, the meeting
edges of said projecting tooth and the notch in
said bar member being substantially normal to 55
the direction of movement of the bar member,
and the other edges of said projecting tooth and
the notch in said bar member being disposed at
an obtuse angle with respect to said meeting
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