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Патент USA US2123308

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July 12, 1938-
A. R. LoFsTRAND, sa»
scRUBBER
2,123,308
STRUCTURE
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Filed Dec. 14, 1936
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Patented July 12, 1938
2,123,308
VU-»Nirlao STATES
EN
0 F FII-¿C E
'2,123,308
SCRUBBER. STRUCTUREl
Anders R. Lofstrand, Sr., Washington, D. C'.
Application December 14, 1936,- Serial No.> 115,869
3> Claims.
This invention relates to a scrubber structure
of` ‘theybrush type designed primarily "for, use in
connection with machines for washing, _rinsing
„ and drying drinking glasses as disclosed by Let
‘ ters,Patent,l,992,920 and 2,052,835, but‘itisto
be understoodthat a scrubber structure, in ac
cordance with this invention, is to be employed in
any connection for which it may be found ap
plicable,‘and the invention has for its object to
10" provide, in a manner as_hereinaíter, setV forth, a
structure of the class referred to including a ver-`
tically movable spring controlled scrubbing ele
ment for encompassing and acting on the closed
, end or bottom and outer periphery ofthe body of
le" a drinking glass bordering such closed endl while
the glass is subjectedto a Washing operation.
A further object of, the invention is to pro-`
vide, in a manner as hereinafter set forth,> a
` scrubber structure including an` entendible de
” tachable scrubbing element of brush-like form.`
A further object >of the invention is to provide,
in a manner as hereinafter set, forth, ’a scrubber
structure including a vertically movable cush
ioned carrier and an expandible` scrubbing ele
íî?i‘" ment capable, of being detachably connected to
the carrier” whereby when worn or impaired, it
may be readily detached and a` non-worn or non
impaired element substituted without discarding
`
the carrier.
im'
„
A further object of the invention is to provide,
in a manner as hereinafter set forth, a scrubber
‘ structure including a scrubbing element formed
ment of the invention, but it is to be understood
that changes, variations and modifications may
be resortedjto which fall Within the scope of the
invention as claimed.
In the drawingz,
Figure l is an elevation ofthe scrubber struc- , ,
ture shiftably suspended from a support, the lat
Figure 2 is an inverted plan of the structure,
Figure 3 is a top plan View,
Figure 4 is asection on line íi--lL Figure 3, and
Figure 5 is a‘section on line 5_5, Figure 3.
Asis well known and as disclosed by the pat
ents aforesaid,»whenscrubber structures are em
ployed ’in machines for washing drinking glasses,
the structures are employed in a group, the num
ber of structures of the group depending upon 3
the number of _glasses which are tobe subjected
simultaneously to, the washing operation. The
structures of the group are arranged in spaced
relation. The group is carried by a support com
mon thereto. The structures are slidably mount
ed in thesupport. When the glassesare subjected
to ‘the‘washing operation` they are inverted and
mounted4 in a tray or basket. ‘The latter with the
glasses thereinl is loweredl into, and supportedy in
lowered, position within a Washing compartment.
The support carryingthegroup of scrubber struc
of a circular outer portion for scrubbing that part
of the outer periphery of the glass bordering the
closed end of the latter and an inner portion ar
washing operation the glasses are resiliently held
ranged within, and disposed diametrically of the
circular portion for scrubbing `throughout the
outer Vface of the closed end of the glass.
against the scrubbing structures and this action
is continuedV until the finish of the washing oper
ation, after which the scrubbing structures and
A further object of the invention is> to provide,
structure including a skeleton scrubbing element
and a vertically movable cushioned carrier there
for having means for detachably coupling said
then the tray or basket with the washed glasses
are removed from. the Washing compartment.
Withy . reference to the drawing the support
which slidably suspends a group of scrubber struc
tures is fragmentarìlyA shown and is illustrated in
n element thereto to bodily move therewith, as well
` as extending such element during the coupling of
Support, indicated at I. is formed with a vertical
thelatter with the carrier.
Further objects of the invention are to provide,
in a manner as hereinafter set forth, a scrubber
structure which is simple in its construction and
arrangement, strong, durable, compact, readily
assembled, thoroughly eflicient in its use and com
paratively inexpensive to manufacture.
To the above ends essentially and to others
which may hereinafter appear the invention con
sists of the novel construction, combination and
io
ter_ being shown in section,
tures` is then lowered into the compartment
aforesaid until the scrubbing structures yieldably
engage the closed ends of the glasses. During the
in a manner as hereinafter set forth,` a scrubber
5
arrangementiof parts as will be morev specifically
described and` are as illustrated in the accom
panying drawingwherein is> shown an embodi
Ul
zio
connection with a single scrubber structure. The _`
opening 2 surrounded at` its upper end by a ver
tically disposed annular boss 3 of frusto-conoidal
contour. The number of openings 2 and bosses 3
will correspond to the number of scrubber struc
tures which are to be suspended from support I.
The openings 2 will be arranged in spaced rela
tion. Forms of supports for suspending a group
of scrubber structures are set forth in the patents
aforesaid. No claim is made »to the support in
this application as the support is shown for the 55
2,123,308
'i purpose of showing the adaptation of a scrubber
structure in slidably suspended relation with re
spect to a support.
A scrubber structure, in accordance with this
invention, includes a vertically movable cushioned
carrier 4 adapted to be slidably suspended from
the support I and a scrubbing element 5 which
is detachably connected to the inner or lower
end of carrier 4-
10
'
The carrier 4 includes a shaft 6, a coupler 1, a
cushioning spring 8, a hanger 9 and a retaining
screw Il). The shaft 6 is formed lengthwise of
the axis thereof with a screw threaded socket I I
opening at the outer end I2 thereof. The socket
that portion of member 34 which depends from
flanges 32, 33 of tapered form. The flanges cor
respond in length to that of the head 30. The
latter is formed of a split annular outer portion
35 and an inner portion 36 which is disposed
within and diametrically with respect to the por
tion 35. The flanges 32, 33 direct the rOWs of
bristles at an outward inclination with respect
to the portion 35 of head 30 and also at an in
clination with respect to the portion 36 of head 10
30. The bristles of the rows'of bristles carried
by portion 36 of head 39 are of less height than
the bristles carried by portion 35 of head 30.
The distance between the outer side edges of
15 II is of less length than that of shaft 6. The . the ribs 24, 25 is slightly greater than the inner 15
diameter of portion 35 of head 30. The ribs are
latter is of circular cross section and includes
portions I3, I4 of different diameters. The por
tion I3 is of greater length and of greater diam
eter than the portion I4. The junction of Vthe
20 portions of different diameters provides a shoulder
I5. The portion I4 merges into the inner end
of portion I3. The latter is formed with a key
way I6 which extends from shoulder I5 to shaft
end I2. The coupler 1 includes a plate formed
25 of an intermediate part I1 and a pair of oppo
sitely extending end parts I8, I9. The part I1
is of greater width than the parts I8, I9 and is
formed with a vertical opening 20 at its axis.
The lower face of part I1 is formed with an an
30 nular rabbet 2I which borders the lower end of
opening 20. The outer end edges 22, 23 of the
parts I6, I9 respectively are of arcuate contour
and oppositely disposed. The lower faces of the
parts I8, I9, inwardly adjacent to the edges 22,
have depending oppositely disposed frictional
35 23
clamping ribs 24, 25 respectively of segmental
contour. The portions 26, 21 of the lower faces
of the parts I8, I9, outwardly adjacent the ribs
24, 25 respectively, are to be arranged in super
40 posed relation with respect to the top of the
circular portion, to be referred to, of the scrubbing
element 5. The portion I 4 of shaft 6 extends into
opening 26, the shoulder I5 bears against the
upper face of coupler 1, the inner end of shaft
45 portion I4 is upset, as at 28 and arranged in the
rabbet 2| whereby the inner end 28 of shaft
portion I4 will coact with the shoulder I5 to con
nect shaft 6 to coupler 1. To prevent the carrier
4 from bodily revolving relative to support I the
50 boss 3 is provided with a stop, in the form of
a pin, screw or lug and shown by way of example
a pin 29 which extends into the key-way I6.
The size of the pin 29 relative to the width of
the key-way I6 is such as not to prevent the
55 vertical movement of the carrier 4 relative to
support I.
The scrubbing element 5 is of skeleton form and
includes a circular split extendible hollow head
3l! opening throughout its lower face, as at 3I
60 and provided with a pair of spaced depending
outwardly inclined parallel ñanges 32, 33 integral
with the split ends of the head. Extending into
and throughout and depending from the head 39,
as well as being clamped thereto by the flanges
65 32, 33 is a scrubbing member 34 corresponding
in length to that of head 3U and consisting of
rows of bristles arranged in a manner to provide
adapted to bear against spaced parts of the inner
side of the said portion 34, whereby the latter
will be extended and detachably frictionally
20
clamped to coupler 1.
Surrounding the shaft 6 is a coiled cushioning
spring 31 which seats at its inner end on coupler
1. When the structure is moved upwardly, the
outer end of spring 31 abuts support I and
25
cushions such upward movement.
The hanger 9 of the carrier 4 is in the form
of an annulus 38 mounted on and of greater diam
eter than that of the outer end of shaft 6. The
hanger 9 is secured on shaft 6 by the headed
retaining screw I9 extending through the hanger 30
9 and engaging the wall of socket II.
When the scrubber structure is in its lowermost
position, the hanger 9'seats on the upper edge of
boss 3 (Figure 1).
What I claim ist
35
1. In a scrubber structure, a brush structure
forme-d of an annular portion carrying a brush
element, and a rigid plate having means on its
upper face for connecting it with a shaft and
a pair of ribs on its lower face in the form of 40
segments of a circle diametrically oppositely lo
cated for frictionally engaging the inner face of
opposite sides of said annular portion.
2. In a scrubber structure, a brush structure
including a brush element carrying part formed 45
of an annular portion and a portion extending
inwardly from the annular portion, and a rigid
plate overlapping the annular portion and hav
ing end edges lying within the perimeter of the
brush structure, said plate having means on its 50
upper face for connecting it with a shaft and a
pair of ribs on its lower face in the form of
segments of a circle diametrically oppositely lo
cated for frictionally engaging the inner face of
opposite sides of said annular portion.
55
3. In a scrubber structure, a brush structure
formed of an annular portion carrying a brush
element, and a rigid plate overlapping the annu
lar portion and having end edges lying within the
perimeter of the brush structure, said plate hav 60
ing means on its upper face for connecting it with
a shaft and a pair of ribs on its lower face in
the form of segments of a circle diametrically
oppositely located for frictionally engaging the
inner face of opposite sides of said annular por
tion.
ANDERS R. LOFSTRAND, SR.
65
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