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Патент USA US3043083

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July 10, 1962
, 1961
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United States Patent
Patented July 10, 1962
3 043,665
in the size of the treated area and to insure against the
leaving of an untreated central portion in the treated’
Stephan H. Terrel, 144 Short Hills Ave., Spring?eld, NJ. .
Filed Jan. 19, 1961, Ser. No. 31,773
Other objects, advantages and results of the invention
will be brought out by the following description in con
4 Claims. (Ci. 51_195)
junction with the accompanying drawings'in ‘which: ' 7
FIGURE 1 is a side elevation of an abrading tool
This invention relates in general to the treating me
embodying the invention showing it mounted in the
chanically of the surfaces of metals or synthetic plastic
chuck of a machine driving spindle that is schematically
materials for various“ purposes, and more particularly, 10 illustrated by broken lines;
the invention contemplates the decorating of surfaces of
FIGURE 2 is a top planview of the abrading tool; , .
metal leaf or foil, for example, such as is used. in the
FIGURE 3 is a central vertical sectional view approxi
manufacture of decalcomanias. While the decoration
mately on the plane of the line 3-3 of FIGURE 1;
may be of different character, the invention is especially
FIGURE 4 is a vview similar to FIGURE 1 showing
directed toward the provision of a decoration and method 15 the facepiece disposed eccentrically to the axis of rotation
of producing it wherein a surface is abraded in areas of
of the driving head and machine spindle and also showing‘
approximately circular outline formed by rotating abrad
another form of the body; and
ing, burnishing or polishing tools mounted on driving
FIGURE 5 is an exploded perspective view of the sev
spindles, sometimes known as “machine twisting.”
eral parts of the abrading tool illustrated in FIGURE 1.
Objects of the invention are to provide a method and 20
Speci?cally describing the embodiment of the invention
apparatus involving the use of an abrading or burnishing
illustrated in FIGURES l, 2 and 3, the reference char
tool mounted on a revoluble spindle and of such nature
acter A designates a drive rod one end of which is adapted
and so-_shaped that a sharp de?nition of the circular out~
to be attached in any suitable manner to a driving spindle,
line of the abraded area formed by the tool shall be
for example by a clutch B- of a known type of multiple .
avoided and circular grooves or scratches visible to the 25 spindle engine turning machine. On the other end por
naked eye shall be reduced to the minimum whereby
tion of the drive rod is separably mounted a cylindrical
to produce a novel and attractive decorative effect; and
driving or support block C ‘of suitable rigid material of
to provide such a method and abrading tool whereby ex
adequate strength to resist the pressure necessary to
tremely thin metal leaf can be so treated without danger
steady operation of the tool, for ‘example metal, which
of destroying the metal leaf.
30 has a central or coaxial socket 14- in which the end of the
Another object of’ the invention is to provide an
rod is ?tted and rigidly held by suitable means such as
abrading bu?'ing or polishing tool or apparatus of the - a set screw 15.
character described which shall include a novel and im
In accordance with the invention, there are separably
proved construction and combination of a driving ‘or
associated with the drive block and each other, a body D
support block for attachment to a driving spindle, a body 35 and a facepiece E in such a way that the drive block, '
separably attached to said driving block in a novel and
body and facepiece can be easily and quickly connected
improved manner and a soft resilient facepiece separably
to and separated from each other Without the use of
attached to the body in a similar manner and containing
special implements such as screw drivers or Wrenches;
or supporting an abrasive or treating material, whereby
The invention speci?cally contemplates the intercon
bodies of different sizes and shapes can be interchange
nection of the drive block and the body and the inter~
ably used with facepieces of different sizes and shapes, and
connection of the body and the facepiece by means in
facepieces can be easily and quickly interchanged to per
mit change of abrasives or because of Wear of the face
. eluding pressure sensitive adhesive so that the parts can
pieces, and‘ thereby make possible the adaptation of the
tool to different purposes, for example, for light or ?ne 45
be connected and disconnected by simple and quick mo
tions such as exerting pressure or pushes and tension or
pulls on the parts.
abrasion of the thin metal leaf‘ or for heavy or coarse‘
- .
. '
The facepiece preferably is mushroom shaped and
abrasions of thicker sheets or" materials and’also provide
formed of yielding or resilient material which contains or
substantially continuous operation with a minimum loss
supports the various abrasives or polishing materials.
of time incident to changing of the parts of the tools,
For example, the facepiece may be formed of soft rubber
which insures an exceptionally high rate of production. 50 like material in which an abrasive powder is embedded,
Still further object of the invention are to provide
or having a rough or porous surface in'which abrasive '
an abrading tool or apparatus of the character described
powder may be carried or supported; and the facepiece is '
which shall include novel and improved features ofcon
preferably’circular in plan with its abrasive-carrying SUI? I
struction such that the pressure applied to the surface
face segmentally spherically convex as indicated at 1 and
being treated ‘by the tool may be easily, accurately and 55
its opposite surface or bottom or rear side ?at as indicated
?nely varied to'vary ‘the nature of theabrading action at
different zones of the abraded area, and particularly so
that such pressure shall gradually decrease from the cen~ '
The body D is also formed of resilient material such as
and is so shaped that when the facepiece is pressed
ter of the facepiece toward the perimeter thereof; and
to provide such a tool the construction of which shall 60 against the surface to be treated, the pressure of the face
piece on’ the surface may be gradually varied from the
permit easy and quick adjustment or disposition of the
center of the face’piecevto'the‘perirneter'thereof, and as
abrading face eccentrically with respectto the axis of
shown, the body is elongated and circular in, plan and
rotation of the driving or support block, to facilitate the
transverse cross-section and has a ?at front surface 3 at
treatment of harder materials, to provide for variation
' 3,043,065
of rotating at relatively high speeds’, for example, 200
‘one end and a ?at rear surface 4 that are preferably
r,.p.m., and the tool is moved to cause contact of its face
i with the surface F to be treated; and While the tool is
a being rotated, pressure is exerted thereon longitudinally
parallel to each other and perpendicular to the axis of the
body; and the intermediate portion'of the body has a cir
cumferential groove 5 so that the diameter of the body
of the drive rod and drive-support block C, that is, down
at said groove is less than the diameter of the front end
wardly in FIGURE 1 of the drawings so as to press the
convex face 1 of the facepiece into contact with the sur
ace F. During this operationthe area of contact in
creases as the convex surface lrtends to flatten, the face
surface 3. This type of body is especim‘ly useful Where
light pressures and delicate treated surfaces are involved,
and FIGURE 4 shows a modi?ed form of the body which
is intended for use where greater pressures or harder or
tougher'surfaces to be treated are involved. Here the
body D’ has a flat front or top surface, 3' and a flat rear
or bottom surface 4' and the body is frusto-conical in
. shape with its larger diameter at the top or front side 3'.
piece and the body being resiliently yieldable as above de
scribed. Due to the shape of the body, there will be a
wobbling of the body due to the portions between the face
piece and the drive-support block of less diameter than
the facepiece greater degree of yieldability at the outer
While the size, shape and proportions of the parts may
portions of the facepiece than at‘ its center.‘ Suitable
_ be varied for different conditionsyit may be said with
abrasive or polishing powdersvor liquids can be used de
reference to the facepiece E, that where the diameter is
upon the materials being treatedand the nature
about 2 inches, the height or length at the center should
of the treatment desired.‘
be about 1/2 inch or one-quarter the diameter, and the
The mushroom shape of the abrasive-carrying surface
edge portions’ 7 should be of a height or length of about
J/s inch or one-quarterof the height at the center of the 25) 1 of the facepiece prevents the contact of the entire abrad
ing surface with the surface being treated at the same
body. Where thebody is shaped like the body vD’ and
time and the pressure gradually decreases from the center
has a 2-inch diameter at the. front or top surface 3’, the
to the perimeter of the facepiece. Thus the abrading or
diameter of the rear or bottom surface 4' should be about
polishing effect starts at- the center'of the abrasive surface
1 inch or one-half the diameter of the top surface; and the
height or length of the body should be about 3% of an ' and gradually extends toward the perimeter of the face
piece so that a scratching effect is followed by‘ a polishing
effect as the pressure is applied to the facepiece. This op
Now referring to the body D, the two end surfaces 3
eration reduces to the minimum visible’ scratches or
and 4 maybe of. the same diameter, for example, 2 inches,
grooves and produces an attractive and novel light-re
in which case the height or length of the body would be
_ ‘
about 1 inch, and the groove 5 would have a width and 30 ?ecting decorative effect.
The elimination 'or reduction of the visible scratches
’ depth each about % of an inch.
or grooves can be further insured by. attaching the face
Now referring to the separable connections of the sev
piece to the body in eccentric relation to the axis A’ of
eralparts, a sheet 8 of tough material is permanently and
the drive rod A as shown in FIGURE 4; and this arrange
?rmly/secured to the rear or bottom surface 2‘of the face
piece bymeans of a known type of adhesive 9. The ‘side '. ment also eliminates the possibility of leaving an unpol
of the Sheet 8 opposite the layer of adhesive 9 carries a _
_ known type of pressure sensitive adhesive that is sep
arably adhered'to the. front or top surface 3 of the body
which also is treated as indicated at 10, and that sheets
and the facepiece may be adhesively connected to the
ished portion at the center of the treated area. '
The invention permits the operator to achieve the rna~
chine designs of thetexture and character that has re
quired hand operation of the abrading tool in the past, so
40 that a person with little or no skill can achieve the work of
' body and held against accidental separation incident to
twistingor rotating motion but can be detached from the
body by a lifting or tilting motion of the sheet. 8. To.
a craftsman. 'Furthermore, a large number of the tools
can be mounted in a multiple spindle machine and thereby
effect great savings in time and labor and corresponding
in rates and quality of production.
facilitate handling of the sheet and the facepiece, the sheet 45' increase
Where extra brightness or, for example, a “satin” ?nish
has a radially projecting tab- 11.
' ' ,
The body is separably attached 'to the drive block or
I- support block C in the same manner, a sheet 12 like the, i
sheet 8 being permanently and rigidly connected to the
is desired, certain'known types of ?uids can be used with
or separate from the abrasives, and some of such ?uids
may also be used for cleaning the treated surfaces of the
materials and can be left on the surfaces or removed de
end surface 4 of the body and having a pressure sensitive 50 pending
on the type of surface. Other ?uids may be used
adhesive connection 13 like the connection .10, 1'1, with the
to reduce the friction or to lubricate the abrasive material.
end of the support block C.
construction, it will be observed that bodies
of'dilferent sizes and shapes can be easily and quickly in
In some cases, it may be desirable to arrange the abra
sive material on the facepiece'in separate zones so that
particles of soft material may be centrifugally thrown
terchanged with facepieces of di?eren-t sizes and shapes, 55 loose
said zones and thereby preventing the abrasive
and different facepieces can be readily interchanged to
from clogging, and'prolonging its life. For example, the
permit change of abrasives or polishers e.»g. soft textiles
surface 1 of the facepiece might be embossed or cut so
and plastics or to allow replacement of facepieces in case
as‘ to produce spaced projections in the form of crescents,
of wear or damage orrfor making variousshaped designs.
or other shapes.
; The hole 14 in the drive block is preferably of suffi 60 crosses
Other modi?cations and changes in the details of con- '
cient depth to permit adjustment of the block longitudinal:
struction of the tool and in the method of mechanically
1y of the drive rod A to insure proper contact ofthe face
surfaces maybe madewithin the spirit and scope
piece with the surface’ to be treated. The diameter of
of the invention. Also, it will be understood that various
the drive block is less than the diameter of the juxtaposed
end of the body, the ‘diameter being made smaller where 65 resilient materials may be used in the facepiece and the
- the decoration is to be applied under light pressure or on
thin or delicate materials, and the block being of larger
diameter where it is desired to apply greater pressure to
the facepiece as when abrading or polishing hard mate
rials. It will readily be understood that the smaller the
diameter, the softer will be the effect of the outer edges
of the treated area and the smaller will be ‘that area. '
body, such as ordinary rubber, foam rubber, polyurethane
foam and the like.
I claim:
l. .A surface-treating tool comprising a body and means
for separably connecting it to a driving spindle for rota- '
tion, a facepiecerhaving a surface-treating front face, and
a separable pressure-sensitive adhesive connection be
tween said body and the rear face of said facepiece, said
connection including a sheet of tough material having a
The use and operation of the tool will readily be under
stood from the foregoing, but it might be pointed out that
the tool is attached to a driving spindle whichris capable 75 ?nger tab‘projecting beyond the peripheral surfaces of
said body and said facepiece to be gripped for pulling of
the facepiece away from the body.
'2. A surface-treating tool including a drive-support
between its ends providing said portion between the face
piece and the drive-support block of less diameter than
the ?rst-mentioned end of the body.
block separably connectible to a driving spindle, a face
4. A surface-treating tool as de?ned in claim 2
piece having at one end thereof a segmentally spherical
said body is frusto-conical and is connected at
convex abrading face, and an elongated body circular and
end to said drive-support block.
continuous in transverse cross-section and resilient
throughout its length and transverse cross-section, said
References Cited in the ?le of this patent
body having its opposite ends coaxial and connected to
said drive-support block and to said facepiece, respectively,
and having a portion between said facepiece and said
Scott ________________ .._ Sept. 3, 1901
drive-support block substantially less in diameter than
Stieghtz ______________ __ Apr. 3, 1951
said facepiece.
3. The surface-treating tool as de?ned in claim 2 ‘
wherein said body has a coaxial circumferential groove 15
O’Neil _______________ __ July 7, 1953
Poland ______________ __ Nov. 1, 1960’
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