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Патент USA US3090070

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May 21, 1963
Filed April 9, 1959
_3 Sheets-Sheet l
May 21, 1963 >
Filed April 9, 1959
3_ Sheets-Sheet 2
May 21,. 19613»r
w PERclvAL ,
Filed April 9‘, 1959
3v Sheets-Sheet- 3 "
W/LL/AM PERc/ml.
United States Patent Oil ice
William Percival, Scraptoit, England, assignor to J.
Goddard & Sons Limited, Leicester, England
Filed Apr. 9, 1959, Ser. No. 805,204
Claims priority, application Great Britain Apr. 9, 1958
5 Claims. (Cl. 15--S47)
Patented May 21, 1963
A preferred form of construction in accordance with
the invention is illustrated by way of example in the ac
companying -drawings ‘and will now be described with ref
erence to the drawings in which:
FIGURE 1 is a perspective view of an assembled pol
ishing head with a handle `and polish canister iitted to it,
FIGURE 2 is a side elevation View on La somewhat en
larged scale of the parts vshown in FIG. l,
FIGURE 3 is a ldetail cross sectional view taken on the
This invention is for improvements in or relating to 10 line III-III of FIG. 2,
FIGURE 4 is a front elevation view shown partly in
polish applicators and has for one of its obects to pro
vide a simple and convenient form of applicator suit
able for mounting on a broom handle to facilitate the
application iof polish in ‘a uniform manner to ñoors or
central cross section of the parts shown in FIG. 2,
FIGURE 5 is an exploded View :in front elevation and
partly in central cross section of the parts which make
15 up the holder,
other surfaces.
FIGURE 6 is an under plan view of the parts shown
In accordance with the invention there is provided a
in FIG. 5 when assembled, `and
liquid applying head or holder having a mounting on its
FIGURE 7 is a plan view of a polishing pad partly
underside for a liquid `applying pad and a mounting on
broken away to indicate its construction.
its upper part for a canister adapted to receive the latter
The polishing hea-d .as shown in FIG. l comprises a
in an inverted ,attitude with its cap removed and a 20
body indicated generally at 10 provided with a mounting
throughway for conducting liquid @or semi-liquid from
the canister to a liquid applying pad when on the mount
in a central raised :part 11 for an inverted canister C and
ing therefor. The `expressions “underside” yand “upper
a mounting socket 12 for a handle 13. The body 10
is fitted across its under part with a polishing pad 14
part” refer to portions of the head which are so pos1
tioned in the attitude of use. Conveniently the head or 25 which is attached around the edges cf the body by means
of ran endless clamping strap 15 shaped to lit the pe
holder is provided with a passageway or passageways
ripheral contour of the body 10. The strap 15 is pref
so arranged as to conduct the liquid or semi-liquid from
erably of such thickness as to project slightly trom Ithe
the canister and distribute it over a pad on the pad
body 10 and pad 14 so as to serve :as a buifer.
mounting. When the -device is in use with the pad and
canister mounted in position the pad is adapted to have 30
As can -be seen more clearly from FIGS. 2 and 4 the
an exposed face ydirected towards the floor or »other sur
canister C, which may be cylindrical, has a screwed neck
face and liquid, for example polish, is caused to pass
portion 16 which after the closure cap has been removed
as -required with the :assistance of gravity into the pad
is adapted to be screwed into a screw threaded recess 17
from the canister.
ister similar to those commonly used for metal polishes
in the top of the body 10> so that the canister is supported
on the head in inverted attitude. In this attitude the
and with the canister linverted liquid is prevented by the
wellknown action of atmospheric pressure from pouring
tend to escape through the hollow neck 16 but this is
Normally there is employed a can
liquid or semi-liquid polish in the canister would normally
counteracted by utilising the well-known action of atmos~
freely from the canister. The pad is arranged to be com
pheric pressure to prevent the contents `from ilowing from
pressible so that on being :alternately compressed and
released during liquid application by the pad it will in 40 the canister except when replacement lair can enter the
canister. This is ensured by the fact that the escape route
from the inverted canister is coniined to a short and rela
tively narrow vfeed passage 18 leading downwards from
the center of the screwed recess 17, the neck 16 having
It is found in practice that the use of ra sponge like
45 a close liquid tight tit Iin the recess 17. The passage 18
pad such as one formed of foam rubber ‘or foam plastic
is made sufliciently small to prevent air normally from
to Iapply liquid polish directly to la Isurface to be polished
seeping upwardly through it into the canister while liquid
tends to give rise to the polish being deposited in an un
is in' the passage, but has a s-uíîicient cross-section to suph
desirable frothy condition. According to a further pro
vision yof the invention this disadvantage is overcome by 50 ply the required amount of liquid to the pad when air is
forced through the passage into the canister. The psas
covering the underface of the pad wih a layer of porous
sage 18 leads to two slant-ing branch passages 19 extend
cloth. Thus the invention contemplates providing a pol
ing towards the two sides and a vertical branch passage
ishing 'head comprising a body portion having mounted
19a all opening at Ztl on to the bottom of the holder.
on its underside a compressible porous pad, preferably
The bottom face of the body of the head which is pre
having »a layer of porous cloth covering its underface, a 55
sented to the pad 14 is formed with criss~cross shallow
mounting for a canister on the upper part »of the body
recesses 20a (FIG. 6) forming communicating liquid dis
portion to hold an open canister in inverted -attitude and
tribution channels and the openings 20 lead into certain
a passageway or passageways for conducting liquid or
semi-liquid from the canister mounting to` the compres
of such recesses at intersections thereof. Thus it will be
sible pad. Conveniently the mounting for the canister 60 seen that the liquid or semi-liquid polish, when caused
comprises a hollow projection on the holder forming la
to issue from the canister C, will pass through the main
passage 18 and down the branch passages 19 and `19a to
socket to receive and hold the neck yof the canister with
-the criss-cross recesses 20a and become distributed along
a liquid tight connection, with the passageway or passage
such recesses over the whole area of the pad 14.
ways in communication with the interior of the canister.
By appropriate design of the head it can be arranged that 65 For convenience and economy in manufacture the body
of the construction illustrated is formed from Vmoulded
a passageway therein extending from the canister mount
plastic in three parts namely a cover part 21 which in
ing is suñìciently restricted to prevent escape of liquid
corporates the raised part 11 and the handle socket 12;
from the inverted canister except when an equivalent
a middle or main part 22 which presents most of the bot
volume of air is forced into the canister, and that air
is injcted through such passageway when the pad is coru 70 tom Iface of the body having the criss-cross recesses 20a
and has an upturned rim 23 to provide the sides of the
pressed against a smooth surface to release the liquid as
body and a central upstanding boss 24 Vin which the screw
termittently exert a pumping land/or suction «action to
abstract the liquid from the canister approximately in
the amounts needed to keep the pad properly charged.
threaded recess 17 is formed and an insert part 25 of
narrow elongated form in plan and triangular in elevation
which ñts into a correspondingly shaped recess in the
centre of the bottom of the main part 22 and affords
between it and Ithe latter the slanting branch passages 19'.
The cover portion 21 has depending flanges 26 and 27 to
fit around the boss 24 and within the side walls 23 on
the main part 22 so that the parts can readily be fitted
canister by the Well-known action of atmospheric pressure
preventing it from running down the main passage 18 in
the holder until an equivalent quantity of air is admitted
into the canister. Holding the device by the handle 13
the polishing head is moved to and fro across the sur-face
and this movement causes the compressible layer -28 of the
pad 114 to be alternately compressed and released and to
move into and out of the channels 20a and thereby set up
together in proper registry. The three parts 21, 22 and
a pumping action through the passages 19, y19a and 18.
25 are secured together on assembly by adhesive or plas 10 Such action admits smallquantities of air into the canister
tic welding `at the points of engagement with the flanges
26 and 27 and at the engaging surfaces of the parts 22
and 25.
and permits corresponding amounts of polish to escape
therefrom and pass through the passages 18, 19 and 19a
and the channels 2da on to the pad 14. The pad thereby
becomes charged with polish so that in its movements
ÍThe polishing pad 14 is in accordance with the inven
tion for-med of compressible porous construction having 15 across the surface it is caused to deposit a thin lilm of
resilient properties so that when compressed and released
polish thereon. During continued use of the device the
it will exert a pumping action through the Arecesses 20a
passages 18, 19 and 19a continue to be partly charged with
and passages 19 and 17 whereby liquid or semi-liquid
polish while retaining in them a sufficient quantity of air
to enable the pumping action and release of further polish
polish is dispensed from the container in accordance with
requirements. This effect is conveniently secured by 20 to continue ' as required. Thus the polishng pad is
forming the pad of a double layer construction compris
kept automatically charged with polish by having addi
ing an upper layer 28 of open cell foam rubber or foam
tional amounts supplied which are just sufficient to com
plastic providing lresilient properties combined with por
pensate for the amounts deposited by the pad on the
surface being polished. The porous compressible layer
osity, land a lower or outer layer 29 of porous fabric. A
particularly suitable fabric for the layer 29 is a warp 25 28 of the pad functions not only to set up the pumping
action but also to act as a retainer of a suiiicient quantity
knitted fabric of man made fiber such as nylon and pref
of polish to ensure even distribution thereof for short
erably a fabric knitted from a bulked yarn and formed
or long sweeps of the polishing head over the surface
with a shallow pile on its under or outer surface and a
being polished.
smooth upper or inner surface. The paid as shown in
The criss-cross channels 20a in the bottom of the body
FIG. 7 is cut to an outline corresponding to but larger 30
portion serve not only to facilitate the pumping action
than the outline in plan of the head and has its layers
aforesaid, but also to ensure a good distribution of the
bound -together around their edges by stitching indicated
polish Áover the whole area of the pad. In sorne circum
at 30 or otherwise.
stances however such distribution channels may lbe partly
In 'mounting the pad on the body part the edge por
tions of the composite pad are turned upwardly around 35 or wholly dispensed with and absorption properties of
the porous layer 28 may be relied on Áfor distribution of
the wall 23 and gripped by the strap 15 which in clamping
the pad compresses the peripheral portions of the layer
the liquid polish, the pumping action being secured by re
28. The fact that the fabric layer 29 as well as the layer
28 have two way stretch properties enables the edge por
duction in the volume of an internal or surface cavity
on compression of the pad.
formed from a suitable plastic to enable it to act effec
tively as Aa butter. The strap 15 is «arranged to be readily
removable to enable lthe pad to Vbe detached for ease of
ways to a com-pressible pad the action of which is to ab
tion of the pad to be bedded smoothly against the wall 23 40 It will be understood that in carrying out the invention,
the structure of the head may be modified in various ways
without pleating or puckering and the margin of the pad
from that shown in the drawings, while still providing
is compressed against an outwardly projecting flange 31
a head on which a canister may be mounted in inverted
provided -by the cover part 21. The strap 15 which pro
attitude to supply liquid through a passage way or passage
jects somewhat beyond the flange 31 is conveniently
stract liquid from the canister by pumping action in ac
cordance with the requirements. The head may if desired
be constructed in metal 1(e.g. a light weight metal such as
Washing or otherwise cleaning the pad and its holder after
aluminum or light alloy) or other suitable material.
What I claim is:
I rI‘he construction of the pad 14 and the resilient com 50
l. ‘In a liquid applying device having an inverted canis
pressibility of its layer 28 cause the under face of the
pad to occupy a convex form when applied as viewed in
side elevation, see particularly FIG. 2. This is advan
tageous in that when the pad is rested on and is moved
across a surface to be polished a shallow tapering gap
exists between its leading and trailing portions and the
surface, which assists by capillary action in ensuring the
ter with a vneck and a compressible pad associated there
with, a liquid applying head comprising, in combination,
a top portion having an opening substantially in the center
thereof and a recessed bottom, a matching central part
fitted against said recessed bottom of said top portion from
underneath so as to engage the underside of said top
portion, said central part having a hollow neck below the
opening of said top portion to receive the neck of the
on the surface.
canister, a main passageway for conducting liquid by cap
As shown in FIGS. 2 and 3 the polishing head is con' 60 illary action from the canister toward the pad, said main
veniently provided with a fixing screw 32 lformed integrally
passageway being provided vertically -in said central
with or -attached to a ring 33 by which the device may be
part and leading downwardly from said hollow neck and a
suspended when not invuse in an inverted attitude with
conical recess having its highest central point at the
the canister C hanging downwardly. Such lixin‘g screw
lower end of said main passageway, and an insert lit-ting
is provided on the under side of the socket 12 and passes 65 into said recess so that a clearance remains between the
through an aperture therein to screw into the end portion
surface of the recess and the surface of the insert whereby
of the handle 13.V
outwardly sloping ‘branch passageways «are formed, the
For use in polishing a door or other surface a canister
bottom face of said liquid applying head being formed
C containing the polish to be applied has its screw cap
partly by the outer portion of said central part and partly
removed and is screwed into the recess '17 in the top of the 70 by the botom face of said insert, said branch passageways
head whilst the canister is right way up and the head
being in direct interconnection with said main passageway.
'10 inverted. When the canister has been screwed firmly
2. A liquid applying head as claimed in claim 1, where
deposition of an even film of liquid or semi-liquid polish
into the polishing head with the pad -14 already applied
in channel-like recesses are provided in the bottom face
tothe head the Áwhole assembly is inverted and applied to
of said head into which recesses said branch passages ex
the surface to be polished. The polish is retained in the 75 tend.
3. In a liquid applying device having an inverted canis
ter with a neck associated therewith, a liquid applying
in channel-like recesses are provided in the -bottom face
head comprising, in combination, a top portion having
which recesses said branch passages extend.
an opening substantially in the center thereof and a re
5. A liquid applying head as claimed in claim 3, where
in said pad is compressible so as to inject air into said
main passageway so as t0 allow liquid feed to said pad to
cessed bottom, a matching central part fitted against said
recessed bot-tom of said top portion from underneath so as
to engage the underside of said top portion, said central
part having a hollow neck below the opening of said top
portion to receive the neck of the canister, a main passage
way for conducting liquid by capillary action from the l0
canister downwardly, said main passageway being pro
vided vertically in said central part and leading down
wardly from said hollow neck, and a conical recess having
its highest central point at the lower end of said main
passageway, an insert fitting into said recess so that a 15
clearance remains between the surface of the recess and
«the surface ofthe insert whereby outwardly sloping branch
passageways are formed, the bottom face of said liquid
applying head being formed partly Iby the outer portion of
said central part and partly by the bottom face of said 20
insert, said `branch passageways being in direct intercon
nection with said main passageway, and a pad, said pad
being 'attached to the bottom face of said head.
4. A liquid applying head as claimed in claim 3, Where
of -said head against which said pad is disposed, and into
take place by capillary action.
References Cited in the ñle of this patent
Gedge ______________ __ Sept. 14, 1926
Stevens ______________ __ Feb'. 8,
Gleeson ______________ __ Jan. 1,
Schrader ____________ __ June 27,
Karlstrom ____________ __ Dec. 1'1,
Rufo ________________ __ Jan. 12,
Horn ________________ __ Mar. 23,
Meyers ______________ __ Apr. 25, 1950
Nadai ______________ __ Sep-t. 30, 1958
Switzerland __________ __ Jan. 17, 1927
France ______________ __ Oct. 28, 1953
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