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Патент USA US3021827

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Feb. 20, 1962
3,021,816
E. S. L. BEALE
APPARATUS FOR THE DEPOSITION OF LIQUID MATERIALS
Filed May 5, 1958
3 Sheets-Sheet 1
LM
BY
6% mM
ATTORNEY
Feb. 20, 1962
E. s. L. BEALE
3,021,816
APPARATUS FOR THE DEPOSITION OF LIQUID MATERIALS '
Filed May 5, 1958
3 Sheets-Sheet 2
8‘0
0
J
o
/
111/
/N VE N TOR
ATTORNEY
Feb. 20, 1962
E. s. |_. BEALE
3,021,816
APPARATUS FOR THE DEPOSITION OF LIQUID MATERIALS
Filed May 5, 1958
3 Sheets-Sheet 3
EgQ.
27
31/’
; ‘i
@1133 lNl/ENTOR
'
54AM
52,94 MM
ATTORNEY
United States
3,021,816
free
Patented Feb. 20, 1962
1
2
ment applied to the point of attachment shall cause a
minimum amount of distortion of the table.
One or other or both of the ?rst mentioned pair of
spaced and ?xed vertical guide posts may also serve as
the vertical guidepost or posts for the guide or guides
3,921,816
APPARATUS FOR Tim DEPOSITION 0F
LIQUID MATERIAL§
Evelyn Stewart Lansdowne Beale, Wraysbnrg, England,
assignor to McCorquodale Colour Display Limited,
on the other end of the arm or arms or alternatively one
London, England, a British company
or more separate guide posts may be provided for the
Filed May 5, 1958, Ser. No. 732,935
Claims priority, application Great Britain May 7, 1957
2 Claims.
(Cl. v118--411) v
guide or guides on the lower end or ends of the arm or
I
arms.
10
The present invention relates to improvements in and
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- The invention is illustrated by way of example in the
accompanying drawings in‘which—‘
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relating to apparatus for the deposition of thin layers of
paints, inks and other liquid materials in accurately de
‘ FIG. 1 is a view in side elevation of a complete ma
chine-‘embodying the invention.
_
?ned areas on surfaces, the apparatus being of the kind '- '
' FIGS. 2 and 3 are views in-underside plan and eleva
in which the surfacepto receive the deposit is brought into 15 tion respectivelyof a matrix'as used on a machine as
contact with the operative face of a matrix ‘having a
number of shallow cavities in that face for the reception
of materials to be deposited introduced through conduits
leading through the matrix to the cavities so that deposi
shown in FIG. 1, FIG. 3 being taken on the line IlI-—III
of FIG. 2.
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f
FIG. 4 is a view in end elevation of the parts of the
machine relevant to the present invention taken on the
tion takes place on the surface in patches or areas de?ned 20 line IV-—IV of FIG. 1.
'
by the boundaries of the cavities in the matrix.
FIG. 5 is a plan view of a part of the platen and the
The materials to be deposited are such as will remain
guide means therefor.
in the accurately de?ned areas in which they have been
FIG. 6 is a view in elevation showing a part of the
deposited when the surface and matrix are separated.
platen and one of the guides therefor looking from below
The deposition is most commonly effected on paper or 25
card sheets, the sheets being placed upon a ?at platen
in FIG. 3.
-
FIG. 7 is a plan view of the arm of moderate stiffness
which can be raised and lowered by suitable power op
erated means to engage the sheet with and disengage the
separated from the machine.
FIG. 8 is a view in side elevation of the arm of FIG. 7
sheet from the matrix.
It is highly desirable that the movements of the platen
and
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FIG. 9 is a view in section of the main part of the arm
taken on the line IX--IX of FIG. 7.
Referring to FIG. 1 the machine shown is in general
shall take place with a minimum of departure of the sur
face of the platen from the position of parallelism with
the operative surface of the matrix in order for example
of the kind fully described in the speci?cation of co-pend
ing application Ser. No. 690,825 and comprises a hollow
to avoid indentation of the paper or card on the platen
35 base 1 on which is mounted a rectangular base frame 2
by edges or corners of or on the matrix.
On the other hand it is also desirable that the platen
supporting four rigid vertical corner posts 3 of circular
be able to accommodate itself to the surface of the matrix
section and an open top frame 4 ?xedly connected with
when the surfaces of the matrix and platen are not in per
the upper ends of the posts 3.
.
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fect parallelism, as well as to accommodate the surface
To the underside of the top‘ frame 4 is ?xedly con
of a sheet or card of non-uniform thickness on the platen 40 ‘nected a matrix 5 of known kind as shown in FIGS. 2 and
to the surface of the matrix in order to achieve uniform
3 consisting of a metal block having hollow shallow
load distribution between the surfaces to receive the de- '
posit and the whole of the face of the matrix and e?ec—
tive sealing of the cavities in the matrix by the sheet or
card, against escape of liquid usually introduced into the 45
cavities under pressure.
cavities 6 formed in its operative under face, the cavities
being bounded by ridges 7 of small height of the order
of a few thousandths of an inch, extending from the sur
face of the matrix.
'
-
Holes 8 are provided in the matrix leading from the
In accordance with the invention an apparatus of the
upper side thereof to the interiors of the cavities 6 and
kind indicaed above is provided having a rising and fall
the upper ends of the holes are threaded for the connec
ing platen, power operated means for applying lift at the
tion of tubes 9.
50
approximate centre of the underside of the platen, a pair
A support 10 carried ?xedly by a pair of arms 11 ex
of guides ?xed in spaced relationship on the platen in or
tending upwards from the top frame 4 support a plurality
near the general plane thereof and movable on a pair of
of plunger pumps 12 for the liquid to be deposited. The
spaced and ?xed vertical guide posts, and at least one
inlet of each pump is connected through a ?exible tube
arm rigidly connected at one end to the underside of the
13 with one of a number of reservoirs 14 for paint or
arms being of a stiffness such as to maintain the platen
are of metal or other substantially inextensible material.
On the rectangular base frame 2 and in the space with
platen at a point spaced from a line passing through the 55 other liquid to be deposited carried in a convenient loca
axes of said pair of guides and extending at a downward
‘tion above the apparatus, and the delivery end of each
inclination and carrying at the other end a further guide
pump is connected with one end of one of the tubes 9
also movable on a ?xed vertical guide post, said arm or
leading to the holes 8 through the matrix. The tubes 9
parallel to itself during its free rising movement but such
as to yield to permit the platen to accommodate itself to
slight departure from parallelism between the face of the
matrix and the surface carried on the platen intended
to receive the deposit, as said surface makes pressure en
gagement with the face of the matrix.
The arm or arms of moderate stiffness is or are pref
in the four posts 3 of the frame structure and below the
matrix 5 is located a vertically disposed hydraulic press
15, the cylinder 16 of which is supported on the base
frame 2;. The vertical ram 17 of the press 15 carries a
65 platen 18 the upper surface of which is disposed parallel
with the operative face of the matrix 5, both usually be
erably attached to the platen at or in the region of the
ing horizontal as shown, the p1at'en18 being raised and
center of the underside thereof so that any bending mo
lowered by the ram 177. _ ,
7 3,021,816
4
Sheets of paper, card or the like upon which deposits
neath the top frame 4 so that the operative underside of
are to be made are placed singly in succession on the sur
the matrix is parallel or as near as possible parallel with
face of the platen 18 in the lowered position of the latter
and the platen raised by the hydraulic press 15 to urge
the sheet into pressure engagement with the underside
the surface of the platen 18.
of the matrix 5 in such a manner as to seal oil the cavities
1'5, and thereafter the pumps 12 are operated to feed the
liquid under pressure from the reservoirs 14, through the
The stiffness of the arm 27 is selected so that during
rising and falling movements of the platen 18 whilst not
engaged with the matrix 5, the platen makes guided move
ments parallel to itself without any redundant restraint,
by virtue of sliding movement of the two bearings, formed
by the two sets of parts 20, 21, constituting the guides 19
sheet in areas de?ned by the ridges 7. The platen 5 after 10 on the platen itself, on the two posts 3, and the third guide
formed by the bearing comprising the two parts 32, 33 on
cessation of. feed by the pumps is lowered to enable the
matrix 5 to ‘the cavities 6 in order to deposit it on the
sheet with the deposit thereon to be removed and a next
the lower end of the inclined arm 27 on one of the guide
succeeding sheet substituted on the platen.
posts 3, but also so that in the event of some slight lack
of parallelism between the face of arsheet on the platen
It is important that the surface of‘the platen 18 shall
remain, within close lirnits, parallel to the operative sur 15 18 and the operatiyeface of the matrix 5 as the sheet
[face of the matrix 5 in order to avoid undesirable inden
makes pressure contact with the matrix the platen is per
engagement of some part of vthe matrix such as an edge
mitted to accommodate itself to compensate .for such lack
of parallelism by bending yield. of the arm 27.
_.
__<The_ar_m v27 “being connected , hrough the yoke 29 with
tation and possible penetration of a sheet by premature
or corher of oiie or more of ‘the veavity bounding ridges 7,
and also to ensure that an eifective seal shall be ‘achieved 20 the approximate centre of the underside of the platen, any
between uiefshest on the’ platen 18 and the boundary
ridges 7 of the cavities of the matrix and that smudging
of deposit material at the boundaries of the cavities when
bending moment applied at the point of‘attachment as
the arms yields, will involve only a ‘minimum and neg
ligible amount ofl distortion oi the, pl-aten18.
_ ,
the sheet and the matrix are parted shall be avoided.
i,
yoke '29 at the upper end of the arm 27 is prefer
on the other hand non-uniformity of thickness as be 25 ably connectednwith the platen 18 by means of necked
tween edges of sheets of paper or card is frequently en
countered and furthermore absolute and constant accuracy
in parallelism between a moving platen and a matrix is in
practice very di?icult to achieve and it is desirable there
fore that the platen vshall be able to accommodate itself 30
and {the sheet carried thereby to the surface of the matrix
to achieve uniform load distribution between the surface
of the sheet and the operative face of the matrix despite
small departures from parallelism by the platen or varia
studs (not shown) designed to break oil if any large
foreign body is accidentally left between the platen 18
and the matrix 5.
I claim:
,
.
.
.
1.“ Apparatus for depositing ‘thin layers of liquid in ac]
curately de?nedareas on surfaces comprising a matrix
having a plurality of shallow cavities in one face, support
means supporting said matrix in ?xed position with the
cavity-containing face lowermost, means for controllably
feeding liquids to be deposited onto the surfaces ‘through
35
liOflS in thickness of the sheet.
With a view to meeting this requirement there is em
the body of’, the matrix to the cavities, at‘least two ?xed
and parialleluvertical guide posts, a vertically movable
ployed in the case illustrated, a platen 18 of rectangular
form in plan and the ram 17 of the hydraulic press 15 is
engaged with the centre of the underside of the platen._
The platen ‘18 is provided at each end of one of its
edges, the right hand edge in FIG. 1, with a guide 19,
these two guides 19 being arranged in or close to the plane
?xed to said platen in the region of the general plane of
the platen and each slidably engageable with a close guid
ing fit with one of said vertical guide posts, at least one
of the platen and to slide up and down on two of the ver
arm connected at one of its ends to the underside of the
platen,_power-operated means applying lift at the approx
imate centre of the underside of said platen, spaced guides
said platen at a point spaced ?om a vertical plane con
The selected guide posts 3 are precision ground and 45 taining two of the spaced guides, said arm extending down
chromium plated and the guides are shown as each com
wards from the said platen’ at an inclination to the vertical,
and a further guide carried at the lower end of said arm
prising two half bearings 20, 21 in flat. plates 22, 23, the
and slidably engageable with a close guiding fit with one
flat plates having clearance holes 24‘for the passage of
of said vertical guide posts as the platen is raised and
?xing bolts 25 taking into brackets 26 bolted to the two
corners of the platen so that the half bearings 20, 21 can 50 lowered, said arm being normally rigid but having a sul?
be adjusted accurately in position for free sliding without
cient degree’ of inherent resiliency to permit said platen
tical posts 3.
_
_ V
V
An arm of moderate sti?ness, that is, one which is
to assume parallelism with the matrix when in contact
therewith, under the force of the power-operated means.
normally rigid but has some degree of inherent resiliency
may be formed by a length of channel section metal 27
curately de?ned areas on surfaces comprising a matrix
play on the posts 3.
I
2. Apparatus for depositing thin layers of liquid in ac
as shown in FIGS. 7, 8 and 9 welded at one end to a
having a plurality of shallow cavities in one face, means
bracket 28 as shown in FIGS. 7 and 8 to which is welded
for controllably feeding liquids to be deposited onto the
surfaces through the body of the matrix to the cavities,
a semicircular yoke 29 of a size to embrace the upper
support means supporting said matrix in ?xed position
end of the ram 17 of the hydraulic press 15.
The other end of the arm 27 is welded to a bracket 30 60 with the cavity-containing face lowermost, at least two
including a slotted flat plate 31 to which is bolted the
?xed and parallel vertical guide posts, a vertically mov
two halves 32, 33, of a bearing similar to the above de
able platen, said guide posts being in a common vertical
scribed bearings 20, 21, 22 and 23 on the platen 18.
The yoke 29 and the plate 31 of the bracket 30 lie in
plane spaced from the center of said platen, power-oper
ated means including a ram connected with the centre of
parallel planes inclined at an angle e.g. of 45° to the lon 65 the‘ underside of the platen and applying lift to the platen,
gitudinal direction of the arm 27.
a pair of spaced guides ?xed to said platen in the region
The yoke 29 is bolted to the underside of the platen in
of the general plane of the platen and each slidably en
a position substantially concentric with the ram 17 of the
gageable
with a close guiding ?t' with one of said vertical
hydraulic press, with the arm 27 extending downwards at
an inclination to the vertical, the bearings 32, 33 in the 70 guide posts, an arm, a yoke rigid with one end of said
arm and in a plane inclined to said arm and ?xed to the
bracket 30 being engaged and adjusted about one of the
underside of the platen with the yoke embracing the ram
two vertical posts 3 engaged by the guide bearings 20, 21
and the said arm extending downwards at an inclination
on the platen itself, so as to be slidable without play
th?feo?-
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>
v.
wise vertical, and, a fvrthergilids wriedat the lever
In setting up the machine, the matrix 5 is mounted be 76 end of said arm and slidably engageable with a close guid
8,021,816
6
ing ?t with one of said vertical guide posts as the platen
is raised and lowered, said arm being normally rigid but
having a su?icient degree of inherent resiliency to permit
said platen to assume parallelism with the matrix when
in contact therewith, under the force of the power-oper- 5
ated means.
References Cited in the ?le of this patent
UNITED STATES PATENTS
2,591,941
2,779,059
2,794,415
Inner?eld _____________ __ Apr. 8, 1952
Kruft ________________ .._ Jan. 29, 1957
Hillman ______________ __ June 4, 1957
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