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Патент USA US2118719

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May 24, 1938. ‘
s. F‘. WRAAL
2,118,719 _
Filed Jilly 7, 19s? I
s Sheets-sheaf 1
M8524, 1938(
s. F. WRAAL’ ‘
comma DEVICE .
Filed July 7, 1937
3 Sheets-Sheet 2 .
May 24, 1938.
Filed July 7, 19:57
3 Shv'eetseShee-t s ,
Patented May 24, 1938
‘ 2,118,719
ounce '
2,118,? 19
Sverre Frithjoi' Wraal, London, England, assignor
to Ardecor (Products) Limited, London, Eng
Application July '1, 1937, Serial No, 152,408
In Great Britain April _19, 193':
10 ‘Claims. (Cl. ill-62.6)
This invention relatesto devices for applying sively decreases as it approaches the centre of
paint, distemper and the like to ?at surfaces the roller.
such as walls, of the kind comprising a portable
appliance in which a printing roller or colour
transferring roller is adapted to be moved up
and down or across the surface to which the
paint or distemper is to be applied. Such a
device has comprised a hollow container-con
taining one or more colours in troughs and roll
10 ers by which the colour is transferred to the
roller which is in contact with the wall, and the
colours, when more than one is used, are adapt
tial ridges which are relatively displaced from
the ridges in the ?rst-mentioned roller, that‘is
to say, the centre portion of this second colour
receiving roller has its widest ridges at or near ‘
.the centre. These ridges are progressively di
minished in thickness as they approach the ex
tremities of the roller and ?nally end in two
ed to be applied in stripe-form, the edges of
the two contrasting colours being toned down
or more rows of ridges which are gapped or in
terrupted in a manner similar to that of. the
so as to merge one into the other.
?rst-mentionedrollen. The colour, therefore, re 15
The object of the‘ present invention is an im
proved appliance of this kind in which better
means are provided by which the contrasting
colours will be merged one into the other, the
20 arrangement permitting of two or more colours
to be simultaneously applied.
In carrying the invention into e?ect with an
apparatus for applying two colours, the hollow
casing is provided at its lower part with two
troughs adapted to contain the two colours that
are chosen and these troughs may be replenished
from time to time by means of ducts or chan
nels‘ leading from the exterior of the appliance
to the respective trough.
The other roller which is designed to receive
colour from the second trough is constructed
with a similar series of upstanding circumferen- 5
In order to transfer the colours or the colour
or distemper in each trough, a roller is immersed
in each and the surface of such rollers is pro
vided with a number of small projecting points
or protuberances by which the colour transfer
ring action of the rollers may be facilitated to
other rollers as will be described.
Rotating in contact with these rollers in the
respective troughs are two other rollers which
are made of special form, that is to say,- the
40 roller receiving the colour from one trough is
provided at its relatively opposite ends with a
series of upstanding ridges of circumferential
form, and the width of the respective ridges
is progressively narrowed from the extreme end.
There are a number of these progressive contin- '
uous ridges which become narrower as they ap
proach the centre of the roller and such ridges
are continued as smaller ridges which are
50 broken or interrupted by means of gaps formed
therein and such gaps are relatively displaced
over the respective ridges.
ceived on this second roller is of such a charac
ter that it is mainly concentrated on the centre
portion of the roller and becomes less outwards.
Thus, comparing the two colour receiving rollers
the?rst one will receive thev greater quantity of 20
colour towards its ends whilst in the other roll
er the greater amount of colour will be concen
trated on the centre portion of the roller.
. .With the colours thus distributed on the two
rollers and preferably of contrasting e?ect, there 25
is arranged above the two rollers and riding in
contact with their peripheries a colour combin
ing roller and this roller rides in contact with
the raised circumferential ridges on the colour
receiving rollers and is rotated by contact there
with, by‘ which the combining roller receives one
colour principally on the middle of the roller
whilst the two outer portions of the combining
roller receive the colour from the ends of the
other colour receiving roller.‘ These two prefer 35
ably contrasting colours are caused to merge one
into the other by the relatively narrower and
interrupted ridges with which the two colour re
ceiving rollers are provided and such combining.
roller rotates in contact with a still further roll
er which may be termed “the colour applying
roller”. This colour applying roller has prefer
ably a relatively soft felt-like coating which has
the e?ect of smoothing out the colours and caus
ing them to be merged or toned into one an
other to prevent any sharply de?ned edges. It
will be evident that this colour applying roller
will either be made as a continuous cylindrical
periphery, or it may be broken up into a series
of circumferential sections, or divided parallel
to the axle.
From the above it will be appreciated that the
The construction of such roller causes, there
colour applying roller will rest against the sur
fore, the roller to pick up a quantity of colour
face to which the colour is to be applied and the
55 at each end and this quantity of colour progres
casing is such that as it is worked up and down 55
‘the wall or across the wall, so the colour will
be applied by the soft applying roller described.
The casing is fitted with suitable projecting
guide rollers in addition to the colour applying
rollers so that the proper traverse over the wall
_ is facilitated and for this purpose the device or
casing may be provided with a suitable handle
at its rear. Moreover, the rear of the casing
may be provided with a horizontal spirit level.
The operator may by sight keep this horizontal
and he will then know that the up and down
movements of the device will be vertical.
Referring to the accompanying drawings
which illustrate by way of example a device made
15 in accordance with the invention:
‘ Figure '1 shows the device in elevation from the
Figure 2 shows a sectional view of the device
on line 2-2 of Figure 1.
not in use.
At the back of the casing a spirit level '26 is 15
provided to enable the operator to maintain the
rollers employed in the device.
that the travel over the surface to be coloured is
effected vertically.
Figure 3 shows the device in elevation from
the front.
Figures 4 and 4a show in elevation the ridged
In these ?gures (1 to 3) l represents the cas
25 ing, preferably of metal, provided with a handle
The colour applying roller I9 is adjustably
mounted by means of sliding brackets 2| which
carry the bearings 22 for the said roller, the ad
Justment being effected by means of butter?y
nuts 23.
The device is provided with roller 24 which
keep the‘ device a slight distance from the wall
or other surface during the travel thereover by
the colour applying roller IS.
A foot 25‘is provided to enable the device to
rest in a_ substantially horizontal position when
, device in a horizontal position and thus ensure
merged colours from the feed roller to be de
' posited thereon.
It is to be understood that the invention is not 20
limited to the use of two colours since by suitable
adaptation three or more colours may be used
and this will be provided for by ‘additional sets
of colour receiving rollers, these being ridged rela
tively to one another so as to obtain the effect 25
,above described that the contrasting stripes of
As shown in Figure 2 the casing is divided lon , colour shall be caused to merge one into the other.
gitudinally by means of a partition 3 into two
In a modification the colour applying roller
colour compartments 4 and 5 each of'which is may be formed as an engraved surface either in
'30 provided with a spout 6 at the back of the device relief or in intaglio so as to obtain a stencllled
enabling the colour to be introduced into the design effect on the stripes applied to the surface
respective compartments. The spout of the front desired.
compartment is provided with a tubular passage
I claim:-‘
way 1 enabling the colour to be conducted through
1. A device for applying colour to surfaces
35 the rear compartment 5 to the front comparta comprising a casing, colour reservoirs at the base
of said casing, transfer rollers mounted in said
ment 4.
Within the casing l two sets of rollers 8, 9, and casing and adapted to dip into each of the said
I0, II respectively are provided, 8 and Ill bearing colour reservoirs, ridged rollers mounted in the
on the lower ends of guideways l2 and I3 respec
said casing and in peripheral contact with each
40 tively, which guideways are provided at each end of the said transfer rollers, the said ridged rollers
of the casing l. The upper rollers 9 and Hare being provided with a series of ridges so as to
carried in the said guideways and bear on the receive and apply colour over a length different
from the adjacent ridged roller, a common colour
lower rollers 8 and Ill respectively.
The rollers 8 and Ill which may be made for feed roller mounted in said’ casing in peripheral
contact with the said ridged rollers from which
45 example of metal dip into the colour compart
ments 4 and 5 respectively and are provided on it receives ‘colours by contact with the ridges
their surfaces with a number of projecting points thereof, and an adjustably mounted colour apply
or protuberances ll which facilitate the picking ing roller which rotates in contact with the said
up of the colourswhich are transferred to the feed roller and with the surface to be coloured.
2. A device for applying colour to surfaces
rollers 9 and I l respectively.
As shown in Figures 4 and 4a these rollers 9 comprising a casing, two colour reservoirs at the
and H which may be made of hard wood are base of said casing, transfer rollers mounted in
provided with peripheral ridges some of which the said casing over each colour reservoir, ridged
may be discontinuous. The ridges on roller 9 are rollers mounted in the said casing and in pe
55 so disposed that they receive colour in increasing ~ ripheral contact with each of the said transfer
quantity towards the centre of the roller while rollers, the said ridged rollers being provided
the ridges of roller II are so disposed that they with ridges so that the ridges of one roller are
receive colour in increasing quantity towards the wider at the centre of the said roller and diminish
towards the ends thereof, while the ridges of the
extremities of the roller.
other roller are wider at the ends thereof and
The colours from the rollers 9 and I l are trans
ferred to the colour feed roller l6 and become diminish towards the centre, a common colour
merged into each other. As will be seen from feed roller mounted in said casing in peripheral
Figure 2 the colour feed roller I6 is supported contact with the said ridged rollers from which‘ it
receives colour by contact with the ridges there
by and between the rollers 9 and II and is held of, and an adjustably mounted colour applying
in guideways I’! provided at each end of the cas
roller which rotates in contact with the said feed
ing I.
roller and with the surface to be coloured.
The colour feed roller 16 may be provided with
3. A device as claimed in claim 1 the transfer
a hard rubber or like surface upon which a rela
rollers of which have a broken surface to facili
70 tively large number of circumferential grooves tate transference of colour from the reservoirs
I8 are formed.
This colour feed roller l6 contacts with an ad
justably mounted colour applying roller l9 having
a soft felt-like surface 20 which in turn contacts
75 with the surface to be coloured thus enablins the
to the ridged rollers.
4. A device as claimed in claim 2 the transfer
rollers of which havea broken surface to facili
tate transference of colour from the reservoirs to
the ridged rollers.
5. A device as claimed in claim 1 in whichthe
feed roller is mounted on brackets adjustably
secured to the casing.
6. A device as claimed in claim 2 in which the
feed roller is mounted on brackets addustably
8. A device as claimed in claim 2 in which
guide rollers are provided at the lower part of
the casing which co-operate with the feed roller
to facilitate movement thereof over-the surface
secured to the casing.
7. A device as claimed in claim 1 in which
guide rollers are provided at the lowerpart of
to be treated.
9. A device as claimed in claim 1. wherein
levelling means are provided on the casing.
10. A device as claimed in claim 2 wherein
the casing which co-operate with the feed roller
levelling means are provided on the casing.
10 to facilitate movement thereof over the surface
to be treated.
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