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Патент USA US2120483

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June 14, 1938.
w. L..BURGER
'
2,120,483
RUBBING BRICK
Filed June 26, 19736
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1 MW
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IINVENTOR.
W////a L. ?ucyer:
BY
3.
'
ATTOR‘NEY
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Patented June 14, 1938
. 2,120,483
UNITED STATES PATENT OFFICE '
2,120,483
_
RUBBING BRICK
William L. Burger, Kansas City, Mo.
Application June 26, 1936, Serial No. 87,448
5 Claims.
(Cl. 51-—205)
This invention relates to rubbing bricks, par
toward the opposite face of the brick, as clearly
ticularly to those equipped with ?uted abrasive shown in Fig. 3, whereby one pair of openings is
surfaces, and has for its principal object to pro
employed in mounting a handle 9 on one face
vide a brick of this character with a plurality of
25 such surfaces so that when one surface wears
down another surface may be brought into use by
changing the location of the handle, thereby pro
viding a brick of longer life and at a reduced ulti
mate cost to the purchaser.
It is also an important object of the present
openings are located so that they have the same
relative spacing from the respective ends of the
brick to permit registry with screw openings in
the ends of the handles when the handle is re- =
invention to provide a, simple and secure attach
versed as later described.
ment of a handle whereby the handle is readily
The handle 9 includes an elongated, knob-like,
gripping portion [0 and an integral base portion
removed and relocated on the brick to present a
new abrasive surface.
315
when the other ?uted face is used as an abrad
ing surface, and the other pair is used-when the
abrading surfaces are reversed. The pairs of
‘In accomplishing these and other objects of the
invention, as hereinafter pointed out, I have pro
vided improved details of structure, the preferred
form of which is illustrated in the accompanying
drawing, wherein:
Fig. l is a perspective view of .a rubbing brick
embodying the features of the present invention.
Fig. 2 is a similar perspective view but illus
trating the handle detached from and in spaced
relation with the brick.
25
Fig. 3 is a longitudinal section through the
brick on the line 3—3 of Fig. 4, and showing the
handle attached.
Fig. 4 is‘a cross-section on the line 4-4 of
Fig. 3.
Referring more in detail to the drawing:
i designates a rubbing brick formed of abrasive
materials, vitri?ed and bonded together in sub
stantially brick shape to provide substantially
rectangular abrasive surfaces 2 and 3 on opposite
35 sides thereof and having angularly arranged
?utes 4 extending in parallel relation thereacross.
The ?utes on one face of the brick extend re
versely from the ?utes on the other face, so that
the ?utes will extend in the desired angular di
40 rection when either surface is used for abrasive
purposes. The ?utes 4 are of sufficient size to
collect the liquid used in abrading a surface and
to provide relief from. the material abraded there
from.
7
ll having a ?at surface l2'contactable with one
or the other of the abrading surfaces of the-brick,
and which is drawn tightly thereagainst by means
of fastening devices, such as wood screws l3
and I4, extending through the pair of openings
havingtheir larger diameters at the‘ face of the
brick opposite'the-handle, and which are thread- .
ed into the handle as illustrated at l5 and win
Figs. 3 and 4. The heads I‘! and I8 of the
screws pass freely through the larger ends I9 and
20 of the openings but are drawn toward the
constricted ends 2| and 22 of the openings to
?rmly wedge therein at the approximate center
of the brick when the screws are tightened to
draw the bearing surface of the handle against
the brick. The rubbing brick may then be used
until the ?utes on the abrading surface opposite
the handle have been worn away, after which
the fastening devices are removed and the brick
reversed with the handle applied to the worn face
of the brick by inserting the screws through the
other pair of tapered openings.
The base of the handle preferably conforms
with the length of the brick but it is of less width
than the brick, as shown in Fig. 4.
When the handle is applied to the other side
of the brick, the ends thereof are reversed from
what they were on the ?rst side so that the old
screw holes in the handle align with the other
pair of tapered openings, therefore when the
The ?utes on one face of the brick are
screws are reapplied they enter the same threaded
45 preferably staggered with the ?utes on the other
face of the brick, as clearly shown in Figs. 1 and
?utes on the opposite side at the longitudinal
median line of the brick.
Formed in the brick and extending through
50
openings in the handle to facilitate application
thereof. The new abrading surface of the brick
may then be used until the ?utes on that side
have become worn away, after which the handle
may be removed and reapplied to a new brick.
From the foregoing, it is obvious that I have
the body thereof, in alignment with the register
ing points of selective ?utes, are pairs of openings
5--6 and 1-—8. The pair of openings 5 and 6
provided a rubbing brick which has substantially
twice the life in that it has substantially twice
the productive surface of an ordinary brick. It
are tapered toward one face of the brick, while
55 the other pair of openings 1 and 8 are tapered
is also obvious that when both sides of the brick
have become worn the handle may be disconnect
2, so that the ?utes on one side will cross the
35
2
2,120,483
ed and reapplied to a new brick without making
tions to secure a handle to a selected face of the
it necessary to purchase a new handle with every
brick, whereby the handle is adapted to be re
moved and applied to the opposite face when the
brick.
What I claim and desire to secure by Letters
Patent is:
l. A rubbing brick having ?uted abrasive sur
faces on opposite faces thereof and having pairs
of openings extending through the brick from the
respective faces and having screw head engaging
10 portions located substantially midway of the
?uted surface on that face is worn, using the‘
same fastening devices in said other pair of open
ings.
4. A rubbing brick having ?uted abrasive sur
faces on opposite faces thereof and having pairs
of tapered openings extending through the brick
thickness of the brick, and fastening devices en
from the respective faces thereof, one pair of 10
openings having the same relative spacing from
gageable in selected pairs of openings and having
heads engaging said head engaging portions to
from the opposite end of the brick, and fasten
secure a handle to a selected faceof the brick
15 whereby the handle is adapted to be removed and
applied to the opposite face when the ?uted sur
face on that face is worn, using the same fasten
ing devices in said other pair of openings.
2. A rubbing brick having ?uted abrasive sur
20 faces on opposite faces thereof and having pairs
of tapered openings extending through the brick
from the respective faces thereof, and fastening
devices having heads engageable in a selected pair
of openings at points substantially midway of the
25 thickness of the brick to secure a handle to the
face of the brick on the constricted side of said
selected pair of tapered openings, whereby the
handle is adapted to be removed and applied to
the opposite face when the ?uted surface on that
139 face is worn, using the same fastening devices
in said other pair of openings.
3. A rubbing brick having ?uted abrasive sur
faces on opposite faces thereof and having pairs
of openings extending through the brick from
the respective faces and having screw head en~
gaging portions located substantially midway of
the thickness of the brick, one pair of openings
having the same relative spacing from one end of
the brick from that of the other pair from the
opposite end of the brick, and fastening devices
engageable in a selected pair of openings and
having heads engaging said head engaging por
one end of the brick as that of the other pair
ing devices having heads engageable in a select
ed pair of openings at points substantially mid 15
way of the thickness of the brick to secure a
handle to the face of the brick on the constricted
side of said tapered openings whereby the handle
is adapted to be removed and applied to the op
posite face when the fluted surface on that face 20
is worn, using the same fastening devices in said
other pair of openings.
5. A rubbing brick having abrasive surfaces on
opposite sides thereof and provided with ?utes
extending angularly across the brick with the 25
flutes in one face intersecting a plane extending
through the longitudinal median line of the brick
in aligning registry with the intersection of the
?utes in the opposite side of the brick with said
plane, said brick having pairs of openings ex 30
tending through the brick from the respective
faces and having head engaging portions located
substantially midway of the thickness of the
brick, and fastening devices engageable in se
lected pairs of openings and having heads en
gaging said head engaging portions to secure a
handle to a selected face of the brick, whereby
the handle is adapted to be removed and applied
to the opposite face when the ?uted surface on
that face is worn, using the same fastening de 40
vices in said other pair of openings.
WILLIAM L. BURGER.
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