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Патент USA US3036333

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May 29, 1962
C. T. ASBURY
3,036,324
CUTTING TOOL
Filed March 17, 1958
“Mm/1%
‘ice
United
8
3,636,324
Patented May 29, 1962
1
2
3,036,324
FIGURE 4 is a sectional view indicated by line 4—4
on FIGURE 3 showing the appearance of the holder and
CUTTING T5301.
Charles T. Asbnry, 711 Isle of Palms,
Fort Lauder-dale, Fla.
Filed Mar. 17, 1958, Ser. No. 721,741
2 Claims. (Cl. 15-198)
This invention relates to cutting and abrading devices,
cutting elements when the holder is being driven in rota
tion; and
FIGURE 5 is a view like FIGURE 1 except showing
one leg of the cutting element shorter than the other.
Referring to the drawings somewhat more in detail, the
cutting element illustrated in FIGURES 1 and 2 consists
of a pair of wires 10 twisted together and bent into the
and in particular relates to a cutting device of this nature
employing twisted wires as the cutting and abrading in 10 form of a U thus to form a two-legged wire cutter 12.
The wires 10 may be of any size possessing suf?cient stiff
strument.
In my previous Patents Nos. 2,740,980 issued April 10,
1956, for: “Apparatus for Cutting and Abrading”; No.
2,756,659, issued August 7, 1956‘, for: “Device for Cut
ting Stone and Concrete”; and 2,763,257, issued Septem
ber 18, 1956, for “Apparatus for Cutting Stone,” and my
pending patent applications Serial Nos. 537,922, ?led
October 3, 1955, for “Loop Tension Cutter,” now Patent
No. 2,851,028; 584,673, ?led May 14, 1956, for “Method
and Apparatus for Treating Surfaces,” now abandoned;
625,791, ?led December 3, 1956, for “Cutting Devices,”
now Patent No. 2,850,862; and 682,682, ?led September
9, 1957, for “Cutter Elements,” now abandoned; I illus
trate various arrangements for utilizing cutting elements
made of twisted wires for cutting and abrading purposes.
Such cutting elements I have found will cut and abrade a
great variety of materials even stone and cement. The
cutting elements are relatively inexpensive and are quite
e?’icient in operation. One of the widest usages that I
have discovered for my cutting elements is in the abrading
of painted lines from highway surfaces. This is an im
ness to prevent collapse or bending of the cutter and are
or" a relatively stiif material. The individual wires 10
may vary from %6" to 1A" in diameter, and while it is
preferred to employ only two wires twisted together,
there could be three or more wires if desired. The twist
ing together of the wires causes them to support one an
other thus yielding a relatively sti? but resilient cutter
that will not easily become bent in use.
According to the present invention, the cutting element
is provided with an arcuate shaped bearing in the form
of a bearing plate member 14 having a bearing sleeve
portion 16 formed therein and of about the same or a
little greater length axially through the bearing than the
thickness of the twisted wire cutter. This will be seen
in FIGURE 2.
A semi-circular integral margin portion 18 of the bear
ing plate 14, as illustrated in FIG. 2, extends over and
substantially encloses and supports the twisted wire cutter
12 at the U-shaped end portion. The semi-circular mar
‘gin portion 18 is provided with an open slot 19a which ex
portant work operation since undesired paint lines on
tends laterally throughout the margin portion. This open
highways, unless deliberately removed will require some
slot which is adjacent the bearing sleeve 16 functions to
ventilate and dissipate heat from the bearing member.
A lower margin portion, designated 18a in FIGURE 1,
which is integral with the upper semi-circular margin por
tion ‘18 comprises a pair of elongated wire cutter enclos
ing portions 18b. These elongated portions clamp and re
tain the twisted wire cutter whereby the two legs of the
times many months before they will wear off to the point
where they will not be confusing and thus hazardous to
motorists.
The present invention relates particularly to a cutting
element devised for the particular purpose of abrading
paint lines and the like from highway surfaces. The utility
of my cutting element, however, is not limited to this spe
cific work operation but may be employed for other sur
face abrading operations as well.
The particular object of this invention is to provide a
greatly improved cutting element employing twisted wires
cutter are braced and supported relative to each other
and prevented from spreading apart.
The lower margin portion 18a of the bearing plate
member 14 comprises an inclined rib part 20 which pro
vides further stiffening of the assembly so that even
such that a more inexpensive cutting element results and 45 though the material of the member 14 is relatively thin
an extremely strong assembly results which can be utilized
one which will operate in an improved manner.
A still further object of this invention is the provision
in extremely heavy cutting and abrading operations.
element can be pivotally mounted on a holder by which
The cutting element illustrated in FIGURES 1 and 2 is
adapted for being carried by a rotating holder so that the
cutting elements can swing somewhat in the nature of
the cutting element is driven.
A still further object of this invention is the provision
of a twisted wire swing type cutting element which can
swinging hammers, whereby the ends of the legs of the
cutting element can be brought into abrading or cutting
relation with a surface being operated.
readily be replaced when the element becomes worn or
In FIGURE 3 the holder will be seen to comprise a
55 pair of spaced plates 22 mounted on a central drive shaft
of a twisted wire cutting element having an accurate bear
ing associated therewith by means of which the cutting
damaged.
A still further object of this invention is the provision
of a twisted wire swing type cutting element so constructed
that the cutting elements can be produced by mass pro
duction methods and will still match one another quite
closely when mounted on a holder for driving the cutting
element.
These and other objects and advantages will become
more apparent upon reference to the drawings in which:
FIGURE 1 is a view looking in at the side of a cutting
element constructed according to the present invention
having two leg portions of equal length;
FIGURE 2 is a vertical section indicated by line 2-2
on FIGURE 1 showing the construction of the bearing
24. Spaced circumferentially about the holder some
what inwardly from the peripheries of plates 22 are the
support rods 26 which may be in the form of bolts extend
ing through the plates and which rods are of a size to ?t
fairly closely within the bearing portions 16 of the cutting
element. The rods 26 are adapted for supporting a plu
rality of cutting elements in side-by-side relation and this
provides for substantially complete coverage of a surface
being treated so that paint lines and the like can be com
pletely abraded from a highway surface. Also, since the
holder will be mounted in a wheeled carriage or the like
so that shaft 24 will be at a ?xed distance from the surface
portion of the cutting element;
being worked, all of ‘the cutting elements will bear the
FIGURE 3 is a view illustrating the cutting elements
mounted on a holder that drives the cutting elements
ings provided therefor whereby all of the cutting elements
when they are working;
same relation to the surface because of the accurate bear- '
will be eifective and whereby the surface can be worked
3,036,324
4
to remove the paint lines or other foreign matter but with
of said cutting elements comprising a bearing member
including a bearing sleeve, said cutting elements mounted
on said supporting rods in side-by-side relation whereby
a relatively wide surface area is abradable by said tool,
each of said cutting elements including a twisted wire
cutter mounted on said bearing member and having close
out abrading the actual highway surface to any degree.
The cutting elements are illustrated in FIGURE 3 as
being arranged in adjacent relation and, extending com
pletely across the holder, but it will be evident that spacers
could be placed at the ends of the support rods 26 for
'working narrow surfaces thus permitting the use of fewer
of the cutting elements.
.. V
,
.
ly disposed parallel wire leg portions extending therefrom,
said bearing member comprising an upper semi-circular
.
Similarly, the rods 26 could comprise spacers at the
ends of different thicknesses for the various rods whereby
margin portion substantially enclosing and supporting said
twisted wire cutter, said upper margin portion de?ning an
open slot which extends laterally throughout said semi-cir
cular margin portion and adjacent said bearing sleeve for
plete and uniform coverage of a surface with one pass of
ventilating and dissipating heat from said bearing mem
the holder thereover.
ber, and a lower margin portion integral with said upper
,The cutting element described has been illustrated as 15 semi-circular margin portion and comprising a pair of
having two legs of the same length and in most cases a
elongated wire cutter enclosing portions for clamping and
cutting element of this nature is highly satisfactory.
retaining said twisted wire cutter whereby said twisted
There may be instances, however, particularly where the
'wire leg portions of the cutter are braced and supported
work operation is of an extremely heavy nature, where it
relative to each other and prevented from spreading apart,
might be desired for the cutting element to have only a 20 said bearing means comprising an inclined stiffening rib
the cutting elements would be staggered with regard to
the plane of the plates 22 thereby to promote more com
10
single leg thereon. This arrangement is shown in FIG
which joins said elongated wire enclosing portions adja
URE 5 wherein the twisted wire cutter has one leg 28
cent their extremities.
substantially longer than the other leg 30 so that only the
leg 28 is effective for abrading or cutting operations.
2. An abrading tool as set forth in claim 1, wherein said
wire cutter consists of a plurality of wires twisted to—
As in the case of. the previously described cutting ele
ment, a member 32'is provided for supporting and stiffen
gether and forming a U-shape, and wherein the legs of
said wire cutter are substantially of equal length and said
ing the cutter at its closed end and provides for a more ac
bearing supporting rods are spaced equidistant circum
ferentially about said holder.
curately located bearing of accurate size at the closed end
of the cutter.
.
.
It will be understood that this invention is susceptible 30,
(to modi?cation in order to adapt it to di?erent usages
.and conditions; and, accordingly, it is desired to compre
Vhend such modi?cations within this invention as may fall
‘within the scope of the appended claims.
-
I claim:
.
'
_
1. In an abrading tool, a holder for swingably support
ing an assembly of cutting elements, said holder compris
ing a pair of-spaced platesrnounted on a central drive
‘shaft, a plurality of supporting rods spaced circumferen
tially about said holder and inwardly from the peripheries 4:0
of said plates, said rods extending axially through said
.spaced plates and joining the same together, a plurality
of cutting elements mounted on each of said rods, each
References Cited in the ?le of this patent
UNITED STATES PATENTS
661,650 '
1,123,516
" 1,309,587
1 1,517,852
Thurston ; ___________ __ Nov. 13, 1900
' 1,657,752
1,694,018 .
Hentzberg ,. ___________ __ Jan; 31, 1928
Mudge ______________ __ Dec. 4, 1928
2,100,138
2,757,659
Gaudron ______________ __ Jan. 5, 1915
Radinse __"____ _________ _._ July 8, 1919
Neff ____' _____________ __ Dec. 2, 1924
Heldt _______________ __ Nov. 23, 1937
,. Asbury ______________ __ Aug. 7, 1956
FOREIGN PATENTS
629,746
_
France _____________ __ Nov. 16, 1927
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