close

Вход

Забыли?

вход по аккаунту

?

Патент USA US3068799

код для вставки
Dec. 18, 1962
A. v. M. D'ALCANTAR'A
3,068,789
VIGOUREUX PRINTING ROLLERS
Filed April 25, 1957
‘
3 Sheets-Sheet l
21%
.
rZ . .20
I‘
.5,
Z0 22
Ammo VM D'ALCANTARA
INVENTOR.
’
Dec- 13, 19652
A. v. M. D’ALCANTARA
3,068,789
VIGOUREUX PRINTING ROLLERS
Filed April 25, 1957
3 Sheets-Sheet 2
'9" '5‘
4/5
INVENTOR.
.
Am'ouro V M. b/ALcANTARA
BYM/wlmm, Mil/3M
47776.
Dec. 18, 1962
A. v. M. D'ALCANTARA
3,068,789
VIGOUREUX PRINTING ROLLERS
Filed April 25, 1957
5 Sheets-Sheet 3
ANTONIO VM. D'ALCANTARA
>
INVENTOR.
BY Mania/rid, MM pawl
arm,
ilnite grates
hce
te
estates
Patented Dec. 1%, 19oz
2
1
VIGGUREUX PRKNTENG RULLERS
Antonio Vicente l i‘otta d’Alcaniara, Lisbon, l’ortugal, as
signer to Ciha Limited, Basel, Switzerland, 2 Swiss
in accordance with this invention need not have any ?xedv
helical elements and that all the helical elements may be
detachable. As, however, there is usually a certain mini~
mum printing surface .ratio (ratio of printing surface to
non-printing surface) of about 1:10 Or 1:20, it is gen
Filed Apr. 25, 1957, Ser. No. 655,624
Claims priority, application Switzerland Apr. 26, 1956
erally preferable to provide on the roller ?xed helical
elements, for example, distributed uniformly over the
3,968,789
roller surface, the area of which corresponds to the mini
mum printing surface ratio and to arrange the detachable
helical elements between the ?xed helical elements and
distributed uniformly or non-uniformly or symmetrically
or asymmetrically over the roller surface,
2 Claims. (Ql. 101-375)
In vigonreux printing there are used printing rollers
which have on their surface raised portions which extend
in a helical manner across the surface.
As the worsted
Examples of vigoureux printing rollers constructed in
yarn in the form of a sliver, which is generally used in
this method or printing, passes between the said roller
and a counter-roller charged with printing colour the
dyestuff is taken up at the places where the raised por
accordance with the invention are shown in the accom
panying drawings, in which
K
FIG. 1 is a general view of a vigoureux printing roller
having a number of ?xed helical elements. The details
of the end plates are not shown as they appear in other
tions of the vigoureux printing roller press the sliver
against the dyeing roller. After further distortion and
during spinning a very desirable melange effect is pro
?gures.
duced, which cannot be produced in any other manner or 20
not in so simple manner.
FIG. 2 shows a part of a detachable helical element.
FIG. 3 is an axial longitudinal section on an enlarged
scale through the righthand end of a printing roller, and
For vigoureux printing it is generally necessary to have
available a large number of printing rollers, since the
two detachable helical elements are shown.
FIG. 4 is an end view of a printing roller in which a
proportion of the circumference of the roller occupied
segment of the securing ring is partially cut away.
by raised portions, which cause the sliver to be dyed
locally, varies depending on the melange effect desired
and on the dyestu? used. In general there are used
rollers which are provided with raised portions for print
having ?xed helical elements.
ing over a part of their circumference which is between
FIG. 7 is a plan view of an end plate for the roller
shown in FIG. 5.
FIG. 5 is a side elevation of another form of roller
FIG. 6 shows a part of a detachable helical element.
about 10 and 50 percent of the circumference, and, when
FIG. 8 is a cross—section taken on the line a——a in
it is necessary to apply more dyestuff to the sliver, the
latter is passed between two different rollers so that the
FIG. 7.
FIGS. 9—ll represent diagrammatically various ar
printing operation is doubled.
rangements of detachable helical elements.
The present invention provides a yigoureux printing
FIGS. 12 and 13 show a further modi?cation.
roller of which at least a part of the helical projecting
printing elements are detachably secured to the roller.
The detachable helical elements can ‘be detachably
secured to the roller in a very simple manner by means
of plates screwed to the ends of the roller. The ends of
each helical element may be provided with a thickened
The roller shown in FIGS. 1-4, and especially FIG. 3,
has a shaft 11 and a body portion 12 which is ?xed to the
shaft by means of two connecting members 13 one of
which is shown in FIG. 3. Fixed helical elements 31
(see FIG. 1) are permanently secured to the body por
tion 12 of the roller. Upon the body portion 12 and
portion which projects inwardly towards the roller axis
and, for example, projects beyond the edge of the roller
connecting members 13 there are end plates 15 (only one
of which is shown in FIG. 3) which are held in position
In one form of the invention the plates for detachably 45 by screws 16 and nuts 26. The end plates are provided
at their periphery with a plurality of teeth 21} de?ning
securing the helical elements are mounted on the ends of
or ?ts into a groove at the edge of the roller.
the roller by a strong screw clamping means and carr‘
between them radially extending slots 29a. The larger
radial slits at their edges, and advantageously a very
large number of such slits. Screw-threaded bolts at the
tooth 2G1) lies over the end of a ?xed element 31. The
detachable helical elements 39 have at their ends a
ends of the helical elements, and preferably in thickened
portions at these ends, engage within the radial slits in
the end plates. The ?xing may be further strengthened
by somewhat ?attening the screw-threaded bolts of the
helical elements at the places where they engage the slits
in the end plate.
Instead of screw-threaded bolts, there may be provided
at the ends of the helical elements laminar projections
thickened portion 29 in which are provided screws 21
and nuts 22.
The screws 21 are ?attened, as shown at
25 in FIG. 4, at the places where they engage in the slots
20a. The roller 12 has a groove 23 at each end thereof
into which the thickened portions 2? ?t. The end plates
15 and screws 21 together constitute securing means for
the helical elements 3%.
As shown in FIG. 3 the screws 16 have a normal right
handed thread 17 for the nut 2d and a left-handed thread
formed, for example, by the insertion of strip steel, which
projections engage correspondingly narrow slits in the
18 which is screwed into the connecting member 13, and
end plates.
also have a spacing collar 19. When a screw 16 is turned
In another form of the invention the end plates, which
are advantageously mounted by means of screws, are pro
vided with slots arranged in the form of a broken annulus
through which the screw-threaded bolts of the helical
elements pass.
In some cases it may be of advantage to ?x the end
plates by ‘means of suitable, for example, left-handed
screws in such manner that after the helical elements have
been inserted and fixed in position, the plate can be moved
60
clockwise by means of its square end (see FIG. 4), the
end plate 15 is moved away from the roller and the de
tachable helical elements 30 are tensioned. If desired,
the nuts 22 may be permanently connected by soldering
to the screws 21 and the latter may be likewise perma
nently connected to the thickened portions 29, or a sim
ilar engaging means may be formed in one piece or built
up integrally by welding. When all the desired detach
able elements 30 have been inserted, a securing ring 23,
slightly away from the roller so as to tension the helical 70 which is subdivided into three segments, is placed over
the end plate 15 and ?xed in position by means of screws
elements.
It will be understood that a vigoureux printing roller
24. The securing ring 23 engages the toothed portion
8,068,789
3
29 and thus protects the teeth against being accidentally
bent in the direction of the tension of the helical ele
ments, and it also prevents the helical elements from
becoming disengaged from the toothed portion.
4
be desirable. It is obvious rthat the stock of ,vigoureux
printing rollers required to include such asymmetrical
arrangements would have to ‘be enormously increased.’
On the other hand, the present invention enables an
In FIG. 5 is shown a printing roller having a shaft 41
asymmetrical arrangement to be ‘subjected to preliminary
and body portion 42 and also ?xed helical elements 43.
tests in a very simple manner in order to determine
In FIG. 6 is shown a part of a detachable helical element
whether it gives the effect desired. By virtue of the ease
44, which has a thickened portion 45 at its end, to which
with which the helical elements can be interchanged any
a screw 46 is ?xed. The end plates 47 (see FIGS. 7 and
undesired e?ect can be immediately corrected until the,
8) have a central opening 48 to receive the shaft of the 10 desired e?ect is obtained.
‘ _
roller, holes 49 for thescrews which secure the end plate
to the roller, and slots 50‘ arranged in the form of a
A further advantage lies in the simplicity of the ?Xing
means, such as screws or guide slots, which ensure reli
broken annulus to receive the screws 46 on the detach
able ?xing of the detachable spirals and need little manip
ulation for the purposes of readjustment.
able helical elements.
As can be seen from FIGS. 9-11, various arrangements
of the helical printing elements 39 and 31 on the roll are
possible. FIG.v 9 is a schematic sectional view of the
roller 12 showing six ?xed helical elements 31 thereon.
It ‘will be seen from this ?gure and FIG. l0‘that the
cross sectional shape of the helical elements 39 and 31
is substantial, and that it is possible to place one of the
elements 36 in a position on the roller such that it is
against one of the ?xed elements 31. In FIG. 4, the
What is claimed is:
_
l. A printing roller, particularly for vigoureux print
ing, comprising a support roll, a plurality of helical print
ing elements, said elements each having a middle por
tion with a substantially rectangular cross section and
two end portions, one at each end, a plurality ‘of securing
means located at both ends of said support roll indi
vidually engageable with said helical elementsin a direc
tion substantially parallel to the axis of said roll and per
mitting removal of individual printing elements in a di
screws 21 on the ends of such a helical element would be
placed in the slot 26:: immediately next to the larger tooth
20b. In the arrangement of FIG. 10, an element 30 has
been placed immediately next to three of the six ?xed
helical elements. On the other hand, as shown in FIG.
ll, it is possible to place the elements 30 at points spaced
from the ?xed elements 31, which would involve placing
rection radially of said roll, and said middle portion hav
ing exterior cylindrical’ and helically'curved printing ‘stir
faces, said securing means being positioned aroundthe
periphery of the'ends of the roll at distances which are
at the least equal to the maximum dimension of the 'mid
dle portions of said helical printing elements in the pe
ripheral direction of said roller and at the most at dis-.
tances which are integral multiples of the maximum di-'
the screws 21 on the ends of the element in one of the
slots 20a in FIG. 4 which is spaced ‘from the larger tooth
2% by at least one slot 20a and one tooth 20. It will
thus be seen from FIGS. 10 and 11 taken together with
FIG. 4 that the securing means secure the helical ele
ments 30 around the periphery of the ends of the roller
at distances which are at the least equal to the dimension
mension of the ‘middle portion of said helical printing
elements, whereby said printing elements can be secured
on said roll so as to be distributed uniformly or non
\ uniformly or symmetrically or asymmetrically over the
roller surface.
of the element in the peripheral direction of the roller,
2. A printing roller, particularly for vigoureux print
and at the most at distances which are integral multiples
ing, comprising a support roll, a plurality of helical print:
40;
of this dimension of the helical elements.
ing elements each having a middle portion with a substan- .
FIGS. 12 and 13 show a modi?cation of the construc
tially rectangular cross section and a portion at each end .
tion shown in FIGS. 1-4 for ?xing the detachable helical
thereof projecting‘ toward said ‘support roll, securing
elements to the roller.
> means at each end of said support roll-and comprising a
Instead of the screw-threaded bolts shown in FIG; 2,
the ends 61 of each helical element 60 are provided with
plurality of securing members on each of said portions
individually engageable with said printing elements in a
direction substantially parallel to the axis of said roll
and permitting removal of individual printing elements
in a direction radially of said roll, and plates attachable
laminar projections 62, for example, by inserting a piece
of ?at strip steel or similar material into a .slot 63 and
?xing the laminar projection in position, for examplegby
welding or soldering.‘ The projections 62 ?t into the , 7 to the ends of said support roll and having slots therein '
slots in end plates 65. The helical elements are secured
against turning by means of a cover plate 66 which, like
the securing ring 23 shown in FIG. 4, may be divided
up, for example, into three segments. After the helical
elements have been inserted and secured in position, they
can be tensioned by tensioning screws 67, which are
mounted in a connecting member 69 by means of a left
handed thread 68. The cover plate 66 is held in position
by screws 74). The tensioning screws 67 are provided
with nuts 71.for adjusting the end plate 65 when the heli
cal elements are mounted asymmetrically and the print 60
ing roller is therefore loaded‘ on one side.
7 A vigoureux printing roller constructed in accordance
with the invention has numerous advantages.
Apart
in which said securing’ members are engageable, said slots
being around said plates at the least at distances which
are equal to the dimension of said middle portion of said
helical printing elements in the peripheral direction of.
said roll and at the most at distances which are integral
multiples of the dimension of the middle portion of said ,
helical printing elements, whereby said printing elements
can be secured on said roll so as to be vdistributed uni
formly or nonuniformly or symmetrically or asymmetri.‘
cally over the roller surface.
References Cited in the ?le of this patent
UNITED STATES PATENTS
from the fact that one printing roller and a few easily
interchangeable helical elements cover all those arrange
ments which have hitherto necessitated the .use of a
688,035’
Scott ________________ __ Dec. 3, 1901
1,457,276
IShcI'WOOd __________ __i May 29, 71923
1,549,252
Hermandez __________ __ Aug. 11, 1925 . '
plurality of printing rollers, there is the further possibility.
with the printing roller of the present inventioniof ar-'
ranging the printing projections on the roller asymmetri
1,789,298
1,793,6l6
1,909,170
Bertrand ___'_' _____ __v___ Jan. 20,
Hopper _______ __,_____ Feb. 24,
Chisholm ____________ __ May 16,
Bennett ._‘_\_____'_ ______ __ Feb. 4,
cally, as shown in FIGS. 10 and 11. In certain cases
, asymmetrical arrangements produce especially desirable
'
2,230,924
FOREIGN PATENTS
results, because in some cases vigoureux printing gives
too uniform a melange, where a less uniform print would
117,358
1931
1931'
1933’
1941
7
Great Britain ________ __ July 18, 1918
as“p-a;
Документ
Категория
Без категории
Просмотров
0
Размер файла
492 Кб
Теги
1/--страниц
Пожаловаться на содержимое документа