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Патент USA US2410935

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'Z/alfer Z‘?ollzaifzer:
Patented Nov. 12, 1946'
- 2,410,935
. Walter 'r. Gollwitzer, Euclid, ohm, assignor to
Addressograph-Multigraph Corporation, Cleve
land, Ohio, a corporation of Delaware
Application October 25, 1941', Serial No. 418,548
22 Claims. (01. 101-58)
This application is a continuation in part of
my copending application Serial No. 221,841,
?led July 28, 1938.
This invention relates generallyv to printing and
like machines through which printing, printing
and control or like devices are sequentially fed to
have printing ‘operations performed therefrom,
and more particularly this invention relates to
‘ time when'they are brought into printing coop
eration with a sheet or business form. _
,In a printing device of the various types here
inabove referred to, the body of the printing de
vice may embody control means representing
variable control data‘related to the identi?cation
data represented by the printing characters car- .
ried on each such device, and this control data ~
the platen mechanism of such machines whereby
may be utilized for various control purposes in
the desired printing impressions are made from 10 producing the complete business instrument per
the printing means of such devices.
taining to each such device.
In the use of printing machines of this char
When the printing devices of the aforesaid
acter the printing impressions which are to be
character are passed through a printing ma
made usually pertain to identi?cation data such
chine or the like, the printing impressions are
as names, addresses and like information, and 15 made directly from the type characters carried
the printing impressions are made upon webs,
sheets, businessinstruments and the like directly
by the printing devices. .These printing impres
sions usually pertain to identi?cations such as
from the printing means of such printing, print
names, addresses and the like, and it will be evi- '
ing and control or like devices which are passed
dent that the number of type characters neces
through J the machine. The printing devices 20 sary to provide each such identi?cation may vary
from which the printing impressions are made
substantially so that ,the printing impression
may take many diiierent forms, but in most in
made from one printing device may involve but
stances each printing device embodies a plurality - a few type characters while the printing impres
sions made from another printing device may
of lines of printing characters, such as embossed
type, from which printing impressions may be 25 involve a large number of type characters. ‘Such
printing impressions are usually made through
made upon a sheet, business form or the, like.
the use of a platen means which presses a-sheet
While a wide variety of printing devices may be
into printing cooperation with the type charac
employed in machines of the general character to
which this invention pertains, the printing device - ters embodied in the printing devices and in prior
~ disclosed in Mohler Patent No. 1,812,894, patented 30 practice it has been found that the operation of
such platen means has caused a heavier printing
July 7, 1931, is typical of one form of printing de
impression to be made when but a few type char
vice which may be employed. Another generally‘
acters are present on a printing device than was
similar form of printing device adapted for use
made when a large number of type characters
in connection with the platen mechanism of the
are present on the printing device.
present invention is vdisclosed in my Patent No.
2,132,412, patented October 11, 1938. A printing
device of this character includes a rectangular
carrier or frame having an embossable metal
An important object of this invention is, there
fore, to make uniform printing impressions from
the printing means of such printing devices even
printing plate removably ‘retained in position
though there may be a substantial variation in
thereon, type characters being embossed-on such 40 the number of type characters embodied in the
printing devices which are successively passed
a plate to appear in relief on the-operative face
Printing devices of a one-piece char
through the printing machine.
- a
A further object ‘of the invention is to enable
.acter may also be employed, such a printing de
platen means of such a printing machine to
vice being shown in Duncan Patent No. 1,026,246, 45
be actuated by hydraulic means, and more pan» '
patented May 14, 1912, and in such one-piece
ticularly it is an object of the invention to ac
printing devices the embossed type characters
tuate the platen means by a closed hydraulic sys
are formed directly in the single sheet of metal
tem so that uniformitypof the printing impres
which forms the' printing device. In so far as
sions-is assured. Further objects related to the
some aspects of the present invention are con 50 foregoing are to insure against the presence of
cerned, the printing devices may be of the kind
air or other elastic ?uid in such hydraulic platen
wherein-type or printing characters are formed
actuating means; to provide a constant make-up
on suitable stencil paper, carried by frame of
supply of hydraulic liquid; to periodically intro
cardboard or other material, and in such an in
duce an excess of such make-up liquid into the stance the type characters are inked prior to the
system; and to enable such excess liquid to be
returned to the make-up supply in a cycle of
platen operation.
A further object of the invention is to limit
the movement of the platen or other impression
making member of such a printing machine to
ward the type characters so as to stop the platen‘
in a definite and ascertained position in each
operation thereof to thereby insure that uniform
> Figs. 17 to 17A are vertical sectional views
adapted to be read together as a single view and
showing an alternative form of platen mecha
nism and hydraulic actuating means therefor;
Fig. 18 is a fragmental plan‘view of one of the
platen mechanisms of Fig. 17, the view being
taken'substantially from the line
I8-—I8 of '
Fig. 17;
Fig. 19 is a vertical sectional view of the platen
is to arrange the support for the printing devices 10. mechanism of Fig. 18, the view being taken sub
stantially along the line l9--I9 of Fig. 18;
and the support for the platen in a common struc
impressions will be produced. A further object
ture so that the pressure incident to the opera
tion of the platen will be so distributed through
out the structure that the strains incident to the
Fig. 20 is a view of the main pumps of the hy
. draulic platen actuating means, the view being
.taken substantially along the line 20—20 of
printing operation cannot produce uneven print 15 Fig. 21;
Fig. 21 is a longitudinal sectional view of one
ing impressions. Further objects related to the
foregoing are to relieve the hydraulic pressure in
the absence of a sheet below the platen to thereby
prevent the formation of offsets on platen or other
of the main pumps of the hydraulic system, the
view being taken along the line 2i-2l of Fig. 20:
Fig. 22 is a cross sectional view of the pump
impression making member, and to provide a 20 actuating means, the view being taken substan
tially along the line 22-22 of Fig. 21;
novel and efficient platen structure for use in
printing and like machines.
Other objects and advantages of this invention
Fig. 23 is a vertical sectional view of one of
the make-up pumps of the hydraulic system;
Fig. 24 is a plan section taken substantially
will become apparent from the following claims,
taken in connection with the following descrip 25 along the line 24—24 of Fig. 23;
tion and the accompanying drawings which dis
close certain preferred embodiments of the in
Fig. 25 is a fragmental plan view of one of the
platen mechanisms, as viewed from the line
25-25 in Fig. 17;
Fig. 26 is a fragmental vertical sectional view
Fig. 1 is a front elevatlonal view of a machine 80 taken along the line 26—26 in Fig. 25; and
Fig. 27 is a fragmental vertical sectional view
adaptedfor producing business instruments and
In the drawings:
embodying platen mechanism which includes the
taken substantially along the line 21-21 in
features of the invention;
Fig. 26.
While I have shown in the drawings and will
35 herein describe in detail certain preferred em
Fig. 1;
bodiments of my invention, it is to be understood
Fig. 3 is a. front face view of a printing and
that I do not thereby intend to limit the inven
control de {108 adapted for use with the machine
tion to the speci?c embodiments disclosed, but
shown in Fig. 1;
aim to/v cover all modi?cations and alternative
Figs. 3A and 3B are fragmentary elevational
' views of control cards that may be used with the 40 constructions falling within the spirit and scope
of the invention as expressed in the appended
printing and controldevices shown in Fig. 3;
Fig. 4 is a chart of the code under which per
The platen mechanism of the present inven
forations are made in the control areas of the
tion is illustrated herein in different embodiments
printing and control devices such as that shown
46 which have a wide variety of different uses, and
in Fig. 3;
for purposes of disclosure these different forms of
Fig. 5 is an elevational view of a. typical busi
the invention have been herein shown as em
ness instrument produced by the machine shown
bodied in machines for producing complete busi
in Figs. 1 and 2 of the drawings;
ness instruments, records and the like. Thus the
Fig. 6 is a fragmentary elevational view of a_
Proof Sheet Such as may be DrQduCBd in the ma- 50 ?rst-form of the platen mechanism of the present
invention is. illustrated as embodied in the ma
chine shown in Figs. 1 and 2;
Fig. '7 is a fragmental vertical sectional view
chine which is fully illustrated and described in
Fig. 2 is a plan view of the machine shown in
my copending application, Serial No. 221,841, ?led
July 28, 1938, now issued as Patent No. 2,296,277,
65 patented September 22, 1942. Reference may, of
tuating system;~
course, be had to my said copending application
Fig. 8 is an enlarged sectional view taken along
for details of structure and operation, and the
the line 8—-8 of Fig. 7;
present disclosure is accordingly confined to
Fig. 9 is a‘vertical sectional view of the meter
taken substantially along the line 1--1 of Fig. 2
and-illustrating the platen and its hydraulic ac
those elements of the machine which are most
ing pump, the viewv being taken substantially
60 directly related to the present platen mechanism.
along the line 9-9 of Fig. 7;
This machine, which is depicted in Figs. 1 and 2
Fig. 10 is a plan section showing the top of the
of the drawings, is particularly adapted for the
metering pump and taken substantially along the
production of business instruments such, for ex
line III-l0 of Fig. 7;
Fig. 11 is a sectional view taken along the line
ample, as dividend checks S, Fig. 5. Such a divi
55 dend check includes constantly reoccurring data
F, Fig. 5, which in the present instance is the
Fig. 12 is a vertical sectional view taken along
name and location of the company issuing the
the line l2—|2 of Fig. 7;
check, the words "Check No.." the name of the
Fig. 13 is a sectional view taken along the line
bank on which the check is drawn, and kindred
13-43 of Fig. 12;
Figs. 14 and 15 are diagrammatic‘ views illus- 70 data imparting characteristics to the check, in
cluding the border appearing thereon; changing
trating the platen mechanism‘in two different
11-“ of Fig. 9,;
data A, constituting an identi?cation and char
acterizing the check and; in the present instance.
this is an address comprising a name, street and
ing the electrical connections whereby the platen
75, number, and city and state; variable data V
mechanism is controlled;
Fig. 16 is a schematic wiring diagram illustrat
‘ 5
-.which are the amount for which the check is to
‘be payable; and other analogous data such as a
date E, a numberN and a signature B. The date,
tongues I. :When one or the other of the tongues
l isdepressed the plate 2 may be slid ‘endwise‘ '
from the retaining devices 3 and the'bead 3’.
number and signature are the ?rst data, in the
machine as constructed. to be printed; next the‘
variable data V are printed and thereafter the
‘address A; and ?nally the form F are printed
Type characters T are, in ‘this instance, em
bossed in- the metallic plate 2 so as to appear in
relief onone face thereof and in intaglio on the
on the check.
relief faces of the type characters T when the
opposite face, impressions being made from the
The address or changing data A are printed on
printing andcontrol device D is fed into printing
the check directly from a printing and control 10 relation with the platen P, Fig. 1, in the machine.
_ device such as the device D, Fig. 3, and the vari
The printing and control‘ device shown in Fig. 3
able data Vare printed under control of such a
also bears an identi?cation card 5 on which an
printing or like device. It is preferred to employ
impression is made from the type characters T
such printing and control devices for so to do
so that the data which may be printed from the
eliminates the necessity of checking printing 'de 15 type characters T may be read easily, this facili
vices or the like against record cards or the like
tating handling of the device D. This card 5 is
because the printing and control devices, such as
removably retained on the frame I above the
are .shown in Fig. 3, include both means from
plate 2 thereon by suitable retaining devices ‘I
which an impression may be made directly and
and a bead 8 at the top of the frame. A control
means under control of which impression or other
vcard 8 is retained on the frame I atone side of
_ operations may be performed. It is to be under
the card 5 by, the retaining devices 9 and the
stood, however, that when reference is made
bead 8, a retaining device 1’ being interposed be
hereinaftergto a printing and control device, save
tween the cards 5 and 6, and the underlying por
in those'instances where the avoidance of check
‘tion of the frame I are adapted. to have per
ing is essential, this term is to be considered ge
forations formed therein in accordance with the
neric for, as will be apparent to those skilled in _
the art, the platen mechanism of the present in
vention may be used with printing ‘devices not
equipped with control means. Hence in view of
this it is to be understood that While the devices
will be described as printing and control devices,
code shown in Fig. 4 so as to afford control means
or representations of data, and such perforations '
or control means are utilized in the production
of the variable data V on the check S in the man
ner described in detail in my aforesaid copending
application. The perforations’ih the control card
6 and the underlying portion of the frame I may
particularly in those instances where it is not
rbe conveniently produced in a machine such as
essential that the control means of such-a print
that disclosed in my co-pending application Se
ing and control device be employed.
' 35 rial No. 210,897, ?led May 31, 1938, now issued as
The printing devices from which the printing
Patent No. 2,265,229, patented December 9, 1941.
impressions are made in such machines may take
-While a complete description of the manner
many different forms. but in most instances each a in which the card .6 \and the underlying portion
printing device carries a plurality of lines of
of the frame I are perforated is not essential to
printing characters, such as embossed type, from 40 an understanding of the present invention it may
which printing impressions may be made upon a
be well to note that‘E when data represented by
sheet, business form or the like. While a 'wide ' perforations in the card 6 ‘need‘ be changed all
variety of printing devices may be employed in
that need be done is to remove this card 5 and '
machines of this character, the printing device,
substitute another unperforated card therefor
disclosed in Mohler Patent No. 1.312894 patented 45 and ‘this new unperforated card-may then be
July 7, 1931, is typical of one form of printing
perforated to afford representations of .the data
device which may be employed. Another gener
, that are to be substituted for that which has
ally similar form of printing device adapted for
been previously incorporated in the device D. It
use with the present invention is disclosed in,
may be that in sodoing the frame I will also be
Gollwitzer Patent No, 2,132.412 patented October 50 perforated and this will be done in all instances
11, 1938. A printing device of this character in
where the newly formed perforations are located
cludes a rectangular carrier or frame having an
differently than-the supplanted perforations, the
embossable metal printing plate removably re
supplanted and used perforations, in such in- '
- this term is used in the generic sense hereinafter,
tained in position thereon, type characters being I
stances, being covered and rendered ineffective
embossed on such a plate to appear in relief on 55 by unperforated portions on the new card 6. _
the operative face thereof. Type characters have
_ In Fig.6 of the drawings a, fragment of a proof
also been embossed on a so-called one-piecev
sheet 8-2 that may be produced in the machine
printing device of the kind disclosed, for exam
is illustrated, and the characteristics of‘this proof
ple, in Duncan Patent No. 1,026,246 patented
sheet and the means in which it is produced will.
May 14, 1912, and devices of this character may 60 be explained more fully hereinafter to the extent
necessary for a, complete understanding of the
be utilized with this invention. Furthermore, in
some instancestype characters are formed on
present invention.
It may be here pointed out -
suitable stencil paper, carried by alframe of card
.board or other material, and suitable means are
8-2 a pager and proofer such as that shown in
provided in printing machines through which
as my copending application, Serial No. 320,778,
'such devices are fed to, apply ink on the type
characters and afford a printing impression on
a sheet or the like and printing devices of this
kind may be used with the present invention.
The printing and control device shown in Fig.
3 includes a carrier or, as it iscalled in'the art,
frame I having, in this instance, a metallic plate
2 removably retained thereon by ?xed retaining
devices 8, a head 3' at the lower edge of the
frame, and yieldable~ orv 'depressible retaining
however, that in the production of the proof sheet
?led February 20, 1940, may be associated with
the machine shown in Figs. 1 and 2.
The dividend check or sheet S is, in the pres
ent instance, severed from a web W, Figs. 1 and 2,
that is withdrawn from a roll R which is rotat
ably supported in the stand In, which, in the
machine as shown in Fig. 1, is provided. at the
right-hand end of the machine. The web W is
led from the roll R to a suitable web withdraw
ing device contained within the housing N, Fig.
2, and during passage of the web through these
devices the date E and signature B are printed
thereon. Subsequently a portion of the web
bearing these impressions is extended beyond a
severing means including a knife 89 and there
upon the check or sheet S is severed from the
Fig. 7, at which the control areas on the printing
and control devices are sensed to effect set-up
of the multiplying mechanism M, and another
of which stations constitutes a printing station
III, Fig. 7, wherein the printing devices come
to rest on an anvil 264 and impressions are made
directly from the type characters provided on
the printing and control devices.
In the course of operation of the machine the
nally along the top iii of the machine frame IS.
The sheets S thus severed from the web are fed 10 desired feeding movement is imparted in a step
by step manner to the printing and control de
along the guideway G to the left in Fig. 2 by '
web to be deposited in the sheet guideway G,
- which, as shown in Fig. 2, is provided longitudi
suitable sheet advancing means such as driven
rollers I65 so that the leading edges of such
vices Din a manner fully described in my afore
said copending application Serial No. 221,841
?led July 28, 1938, there being an actuating
?ngers [9i and 2| l. During the time that the 15 mechanism 280 (Fig. 2) which for each desired
sheets S are advanced into engagement with stop
feeding movement imparts a reciprocatory stroke
leading edge of a sheet S is engaged with the stop
to suitable carrier bars or other means mounted
?nger l9l, printing means included in a multi
in the printing device guideway.
plying mechanism M, and which include a platen
When the printing and control devices D are
means 250, are operative to print variable data,
as V, Fig. 5, on the sheet, and after such an im 20 moved to station III, in the desired printing po- '
sition above the anvil 264, impressions are made
pression has been made the stop ?nger I9] is
therefrom by the platen P, and this platen P
retracted from engagement with the leading edge
may also make impressions from the other print
of the sheet which thereupon advances into en
ing mechanisms such as a means for printing
gagement with the stop ?nger 2| I. When thus
engaged with the stop ?nger II I, the sheet S vis 25 the number N on the sheet S, as explained in
detail in my copending application Serial No.
disposed beneath a platen P which at predeter
221,841. In such an instance the additional im
mined times in the course of operation of the
pressions are made by printing mechanism which
machine is operated to make a printing impres
cooperates with an end portion such as the left
sion on the sheet S directly from the type char
acters T of the printing and control device D from 30 hand end portion of the platen P as viewed in
Fig. 12.
which the variable data V of this sheet was de
As has been explained above, the number of
rived. The printing and control devices D are
type characters that may appear on various
advanced through the machine in a step-by-step
printing and control devices may vary widely
manner such that each deviceD comes to rest
on an anvil located beneath the platen P so that 35 from device to device, and in order to prevent a
heavy impression being made when only a few
when the platen P is moved toward a printing‘
type characters appear on a printing and control
and control device resting on such anvil a print
device and a light impression being made when
ing impression'is made on the sheet from print
a large number of type charactersv appear. the
ing characters embossed or othe"wise formed on
the device. Where the type characters on the 40 present invention has provided a platen arrange
ment which will make uniform impressions even
printing and control device are formed by em
under conditions entailing extreme variations in
I bossing. such printing impression is made '
.the number of type characters.
through the intermediary of an inked ribbon in
- One factor which contributes to the production
terposed between the embossed type characters
and the portions of the sheet upon which the 45 of uneven impressions is spring, that is, twisting,
in the member supporting the impression making
printing impression is to be made. After an
member which, in the present instance, is the
impression has been made on a sheet by the
platen P. This may be overcome, to a substan
" platen P the stop finger 2“ is retracted from
tial extent by employing relatively rigid mem
engagement with the leading edge of a sheet S
which thereupon passes along the guideway G to 60 bers to support the impression making member
such as the platen P and in the present instance
the left in ‘Fig.2 through a form printing unit
a pair of relatively heavy and substantial side
U by means of which the form impressions F
members 638 and 539, Figs. 7 ‘and 12, are pro
are made upon the sheet so as to produce the
vided. The members are substantially U-shaped
complete document or business instrument.
After the passage of the sheets through the form 65 and are formed from relatively thick material.
The U-shaped con?guration of the side member
printing unit U, they are usually collected in a
538 is afforded by substantially parallel arms
suitable sheet collector (not shown).
540 and 5H, and an interconnecting arm “2,
At the start of operation of the machine a
similar parallel arms 543 and 5“, Fig. 12, and a .
supply of printing and control devices I) are
' introduced into the magazine H from which the 60 similar interconnecting arm 5", constituting the
devices are withdrawn one at a time to be passed
’ side member 538.
The arms 540 and 543 are secured together
through the machine into detecting and printing
by a tie rod 546, Fig. '7, a spacing sleeve 54‘!
positions therein. After passing through these
being disposed about this tie rod between these
positions the printing and control devices pass
into mechanism which operates to direct the de 65 arms. The arms 5“ and 5“ are secured to
gether by a tie rod 548, a spacing sleeve 549 being
vices into one or the other of the drawers J, Fig.
disposed about this tie rod intermediate these
1, in which such devices are stored when not in
arms. A bar 550 extends between the arms “I
and 5“ near the front ends thereof and the ends
chine in which the :present invention has been 70 of this bar are rigidly connected to these arms.
use and from which they are removed when they
are introduced into the magazine H. In the ma
illustrated the‘ lowermost printing and control
device D in the magazine H is removed there
from and is fed forwardly through positions or
stations in the printing device guideway. One
of these stations constitutes a sensing station II, 75
The foregoing arrangement-of side members, tie
rods, spacing sleevesand bar affords a rigid-uni
tary structure which comprises the movable por- ,
tion of the impression making means of which
the platen P is a part.
2,410,935 r
it is well understood in the art to which print
ing machines of the kind to which this inven
tions pertains find their principal‘use that it is
essential that the face of an impression member
dinal movement of the bracket 563 along the tie
rod 239. An arm 564 depends from the bracket
563 near the end thereof and an adjusting bolt ‘
such as the platen P be in strict parallelism with
the face of a printing and control device hear
ing type characters from which an impression
is to be made, this preventing smearing and kin
dred objectionable conditions in impression oper-'
ations. This is best attained by providing the 10
565 is mounted in the lower end of the arm 564
and engages a ?ange on the upright 259 to limit
pivotal movement of the bracket about the tie rod
239, this adjusting bolt enabling the outer casing
562 of the pump 56! to be adjusted into a proper
vertical position.
The outer casing 562 of the pump 56! a?‘ords a
point of piv‘otation of the movable part of the
guide for a piston 566 which is bifurcated, as in
impression means in the plane in which the faces
dicated at 561, at its upper end, and a roller 568
. of the type characters from which impressions
is rotatably mounted on the shaft 569 in this bi
, are to be made will lie and in the present ma
furcation. A shaft 510 is journaled in suitable
chine this is accomplished by securing blocks 15. bearings, Figs. 7 and 9, provided at the upper end ~
552 to the upper edges of the side plates 254
of the casing 562 and has a cam 5'" fast thereon .
and 255 which'form part of the machine frame
in alignment with the roller 568, the con?guration
and are shown in Figs. .7 and 12. 'V-shaped
of this cam being'such that in each revolution of
notches 555 are providedin the blocks 552 and
the shaft 515 the piston 566 is reciprocated in the
the apices of these V-shaped notches lie in the 20 outer casing 562, retroactive force being applied
aforesaid plane in which the type characters will
on the piston 566 to maintain the roller 568 in
lie when a printing and control device is disposed
engagement with the cam 51lfby a spring 512
on the anvil 255. '
Blocks 555 are secured to the arms 552 and 54.5
mounted in a relieved part of the piston in the
outer casing 562, this spring extending to a shoul
of the side members 535 and 539 and these blocks
are formed to provide knife edges 558, which are
seated in the V-shaped notches 554 so that these
knife edges rest in the respective apices afforded
by these V-shaped notches 555. Such mounting
der 515 formed on the outer edge of the cylinder
- 515, that portion of this cylinder immediately be
of the notches 555 assures that the point of pivo
tation of the movable part of the impression
the block 552 which leads to the inlet port 584 that
low the shoulder 513 being screw-threaded into
the lower end of the casing, as indicated at 515.
The head of the cylinder 515 is afforded by a block
of the movable portion of the impression means 30 516'that is bolted to the cylinder and which hasa
enables this movable portion to be moved with
port 511 therein, the outer tube 518 communicat
minimum friction, and this arrangement insures
ing with this port 511. ~ The outlet tube 518 leads
that minimum wear will occur in the course of
to a port 581 provided in abloek 532 secured to the
long use of the impression means. Furthermore,
rear side of the casting 263 which includes the
the seating of the knife edges 558 in the apices 35 anvil 266. The port 58! leads to a passage 583 in
means will lie in the plane above described.
. While the rigid construction above described
opens into the cylinder 555 above the piston 56!]
The part of the cylinder 515 that is cut away to
and the assurance that the face of the impression 40 de?ne the shoulder 513 and the cut-away part on
member will lie in the proper plane attribute to
the piston de?ning a space to receive the spring
the production of the desired uniform impressions,
512 cooperate to a?ord a storage chamber or reser
this can be further assured by causing the im
voir 519 which communicates with that portion of
pression pressure to be effected by a squeezing ac
the cylinder 514 in which the lower end of the pis
tion which may be the result- of the application of 45 ton 556 is reciprocal through ports 586. The pur
retroactive forces and in order to accomplish this
pose of the reservoir 515 is to enable a greater
I resort to a hydraulic system for applying the
quantity of a suitable hydraulic oil to be intro
impression pressure.
duced into the system including the cylinder 515, ‘
It has been stated heretofore that the printing
'port 511, tube 516, passage 588, port 585 and the
and control devices rest on'an anvil 264 during 50 area in the cylinder 559 above the piston 565,
the time impressions are made therefromby the
communication of this system ‘with the reservoir
‘platen P and in order to realize the above referred ' 519 being established with the reservoir 515
to squeezing and the utilization of the retro?
through the ports 580. The additional supply of
active forces when a hydraulic, system is em
" hydraulic liquid or oil in the reservoir 519 is suf?
ployed, I form a cylinder 559, Fig. 7, in the under 55 cient to eliminate the necessity of replenishing the
side of the anvil 254, a piston 566 being recipro
v supply of hydraulic oil in the above described sys
cal in this cylinder and having the rounded outer
tem except at infrequent intervals.
end thereof positioned to bear upon the bar 550
When the cam 51| engages the roller 568 and
extended between the arms 54! and 544 of the -| the piston 566 is forced downwardly this piston
side members 538 and 539. Thus when hydraulic 60 quickly‘ moves from its normal at rest position ~
pressure is impressed on the piston 560 this pres
shown in Fig. 7 and in the very first stages of
sure is effective on the bar 559 to pivot the side
this movement closes the ports 580, thereby trap
members 538 and 539 about the knife edge pivotal
‘fping in the above described system a quantity
supports‘thereof, and the force effective on the
of hydraulic oil sumcient to entirely ?ll this sys
piston is also effective on the anvil and in this 05 tem and consequently as the piston 566 continues
way the pressure incident to the impression mak
‘ its downward movement the pressure impressed
on the oil by the piston 566 is impressed on the
ing operation is a utilization of retroactive forces.
Hydraulic pressure is impressed upon the piston
> piston 565, the di?erence in the diameter of the
from a pump, generally indicated by 56| in Figs.
‘cylinders 515 and 569 and the diiierence in stroke
1 and 7, which includes an outer casing 562 welded 70 of the pistons 566 and 566 affording a hydraulic ‘
or- otherwise suitably secured to a bracket 563
lever which causes the piston 560 to exert su that is pivotally mounted on a tie rod 239, Figs.
stantial pressure on the bar 550.
A ’
1 and 7, intermediate sections of the spacing sleeve
The platen P is *adjustably mounted at the
' 355, the positioning of this bracket intermediate
free ends of the arms 5A0 and 5133, this adjust
these sections of the sleeve preventing longitu
able mounting being described in further detail
hereinafter, and when pressure is applied on
the piston 580 the platen P is forcibly urged to
ward a printing and. control device D supported
applied on the piston 598 at this time will over
come the eifect of the spring 6M and will force
the‘ piston 599 through the cylinder 600, to the
overlies the ribbon 11% whereby the formation
of an-oifset on the face of the platen in the
585 from passing into the opening 581 and hence
the above described arrangement constitutes a
on the anvil 264 to have an impression made onto », right as viewed in Fig. '7. Such movement of the
a sheet S lying above the inked ribbon IRb that 5 piston 599 through the cylinder 600 increases the
capacity of the above described hydraulic system
passes over the printing and control device rest
in such a way that the pressure impressed by
ing on the anvil. It will be apparent that if a
the piston 586 is rendered ineffective to bring the
sheet does not overlie the inked ribbon IRb an
platen P into a position whereat it would be effec
offset will be produced on the face of the platen ,,
tive to make an impression from a printing and
P, and this is objectionable as is well understood
device on the anvil 2“ below the inked
in the art. Therefore a detector is provided in
ribbon 13b. The piston 599 can only move
association with the platen P which actuates
through the cylinder 600 to relieve this pressure
mechanisms that cause the movement of‘ the
in those instances where the presence of a sheet
platen P toward a printing and control device on
the anvil 284 to be interrupted in event no sheet 15 above the ribbon IRb does not prevent the pin
absence of a sheet is avoided.
There are in
stances, however, where the platen P is to make
safety which prevents the formation of offsets
, on the face of the platen P.
an impression operation even though no sheet 20
as S is positioned therebelow. Hence, the means
under control of the aforesaid detector are ar
ranged to be operative‘only when, in an impres
sion operation of the platen; a sheet as 8 should
. It has been explained heretofore that it is de
sirable that the platen P make uniform impres
sions irrespective of the number of type charac
ters provided on the various printing and control
devices moving into the printing and control posi
25 tion below the ribbon IE1), and it has been ex
This detector in the present instance includes a - plained that this in a great measure is attained
be disposed therebelow.
by utilizing retroactive forces which are effective
to apply printing pressure on the platen P. This
is realized in the present instance by providing
alignment with the inked ribbon IE!) but in a
position to be aligned with a sheet which should 30 the cylinder 559 in the anvil casting 253 directly
below the anvil and by applying the platen P
overlie this inked ribbon. An opening 581, Fig.
pressure directly above the anvil so that the force
12, is provided in the bed plate 108 in alignment
resisting the piston 560, which applies the platen
with the pin 585, and when the platen P moves
pressure, is impressed on the anvil 264 and this
downwardly the pin B85 moves toward the open
ing 587. If a sheet overlies the opening 581 the 35 force is opposite to or retroactive with respect
to the force imparted through the platen P. This
pin 5" is prevented from moving thereinto and
arrangement results in a printing operation en
in the course of downward movement the ‘pin
spring-pressed pin 535 (Figs. '7 and 12) mounted
in the plate 588 of the platen structure out of
merely compresses the spring effective thereon. '
tailing what'is, in effect, a squeezing action. I
It has also been explained that by avoiding a
If, however, a sheet does not overlie the opening
structure for supporting the platen P those
581 then the pin 58! passes thereinto and. en
di?iculties attendant to springing in such a struc
gages a block 58! of insulating material on the
ture are reduced to a minimum and since such
upper blade 5” of a pair of switch blades, the
a structure is utilized in the present machine the
other blade of which is indicated by 590, these
production of uniform impressions is additionally
switch blades being mounted on blocks “I of
insulating material in spaced apart relation and 45 assured.
To further insure that uniform impressions will
being supported on the underside of the bed
be made in various printing operations of the
plate I“. When, therefore, the pin 585 en-_
platen P, I stop the platen P in an identical posi
gages the block 588, contacts on the blades 588
tion with respect to a printing and control device
and 59!! are engaged to close an electric circuit
which includes the solenoid 592, Fig. '7, provided 60 on the anvil 2“ in each impression making oper
ation. To this end the lower arms Eli and 5“,
a sheet as S should be below the platen P at
Figs. 7, 14 and 15, are so arranged that their outer
this time, circuit to the solenoid 592 being open
ends ‘extend above the girder 26 l . When the
at a point other than the contacts on the blades
platen is in an upper or inoperative position, in
58! and 580 when an impression operation of the
platen is not to be effective on a sheet as S. 55 which it is shown in Fig. 14, the arms 5“ and 5“
are free of the upper edge of the girder 26L but '
Such circuit arrangement is described in full
when the platen P attains its operative or impres
detail hereinafter.
sion making position, in which it is shown in
Energization of the solenoid 592 retracts the
Fig. 15, the arms “I and I5“ engage and rest
core 591 thereof, Fig. '1, to withdraw the pin 588
on this core from alignment with the end of the 00 upon the upper edge of the girder 26!. The parts
are so ‘arranged that at the time the arms ill
piston 59! reciprocally mounted in a cylinder 600
and i“ so engage the girder "I, the platen P
. in the block 582, a spring ill normally acting
will be in parallel ‘relation with respect to the
‘on this piston 599 to urge it into the position in
surfaces‘ of type characters on a printing and
which it is illustrated in Fig. 7 where it can be
engaged by the pin ‘82 to be retained in the said 65 control device supported by the anvil 2M and at
the time this parallel relation is attained the face
position. The piston 599 is relieved as indicated
of the platen P will be in impression making rela
at. 652 to afford a passage through which com
tion with such type characters. It will be mani
munication is- normally established between the
fest that the engagement of the arms “I and
ports “I and 583. Thus the passage‘ 602 and
5“ withthe girder .28! at this time effectively
therefore, in effect, the piston'598 are part of 70 prevents
the platen from moving beyond the
the above described hydraulic system. Now when
above described parallel relation with the type
the solenoid 592 is energized by the engagement
characters and this further insures that uniform
of contacts on the blades E89 and 590 and the pin
impressions will be produced by the platen P in
598 is retracted from engagement with the end
of the cylinder 600, the hydraulic pressure, being 75 various impression making operations thereof.
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