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Патент USA US2120252

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June 14, 1938.
v_ KADR] '
_
2,120,252
ABRADING MACHINE
v
Filed Sept. l5, 1956
2 Sheets-Sheet l
FIG. 1'.
42
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INVENTOR.
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vasâáf
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Kadri
ATTORNE>
.
June 14, 1938.
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v_ KADR]
2,120,252
ABRADING MACHINE
Filed Sept. 15, 1936
FlG. 5.
2 Sheets-Sheet 2
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¥ Fla. 12.
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92
92
INVENTOR.
VELES ELI.: Kairi
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BCZY lì, 5%@/ _ '
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AATTORNEYS.
Patented June 14, 1938
2,120,252
UNITED STATES PATENT OFFICE
2,120,252
ABRADING‘rl MACHINE.
Vassaf Kadri, New York, N. Y., assignor, by di
r_ect and mesne assignments, of thirty percent
to Nouri Rejeb, New York, N. Y., and twenty
ñve percent to Mary Bagdadi, Brooklyn, N. Y.
Application September 15, 1936, Serial No. 100,930
2 Claims. (Cl. 51-170)
This invention relates to abrading machines. ing devices to be associated‘therewith, the letter
An important object of the invention is to pro
A designates generally the novel abrading ma
vide an abrading machine adapted to receive any chine and the letters, B, D and E forms of abrad
of a plurality of selected abrading devices.
ing devices which may be associated therewith «
Another important object is to provide an while the letter C, a section of abrading mate
abrading machine which may be quickly and rial which may be employed with the abrading
easily equipped with any of a plurality of selected device B.
`
'
abrading devices.
The abrading machine A includes a housing
Another object is to provide an abrading ma
chine adapted for‘manipulation by the hand,
with portions of the device having dual func
tions.
Still another object is to provide a novel abrad
ing device which may be readily coupled to an
abrading machine.
Yet another object is to provide a novel sec
tion of abrading material adapted for use with
the abrading device and abrading machine above
described.
Other objects and advantages of this invention
will be apparent during the course of the follow
ing detailed description, taken in connection with
the accompanying drawings, forming a part of
this specification and in which drawings:
Figure 1 is a side elevation of the novel abrad
ing machine.
'
`
Figure 2 is a similar view, but with portions
removed so as to disclose the construction be
neath.
30
Figure 3 is a vertical section through an abrad
ing device containing portions of the novel abrad
ing machine.
Figure 4 is a section substantially on the line
6_4 of Figure 3, the abrading devices being
shown in top plan. ,
Figure 5 is a perspective view of a roller pref
erably employed in the novel abrading machine,
and one embodiment of abrading device asso
ciated therewith.
Figure 6 is an end elevation of the roller shown
40
in Figure 5.
ì
Figures 7 and 8 are end elevations of the two
portions making up the abrading device shown
in Figure 5.
45
Figures 9 and 10 are fragmentary sections of
portions of abrading material, somewhat similar
to that shown in Figure 8.
Figures 1l and 12 `are end elevations of other
forms of abrading devices which may be em
ployed in the novel abrading machine shown in
Figures 1 to 4 and coupled to the roller shown
in Figure 5.
In the drawings, wherein for the purpose of
illustration is shown a preferred embodiment of
55 the novel abrading machine and various abrad
I5 which may comprise an upper arcuate Wall
I6, a forward end Wall I'l, a rearward end wall 10
I8 and substantially paralleling side walls I9
and 20. The housing also includes an oiiset por
tion 2 I, extending substantially horizontally from
the rearward end wall | 8, provided with side
walls 22 of its own but joining the side walls I9
and 20, a substantially ñat upper wall 23 and a
lower wall 24. This offset portion 2| has- a
mouth 25 opening into the chamber or compart
ment 25 within the main housing comprising the
walls I6 to 2|), and at its end opposite the mouth
25, the offset portion may be provided with a
closure 2l, which may be hinged in any ap
proved way to the offset portion 2| and provided
with a latch 28 of any approved kind. As will
be seen from Figures 2 and 3, this offset portion
2| is disposed at the lowermost portion of the
housing I5 and opens into the lowermost por
tion of the chamber 26 within the main housing.
Consequently, there is communication between
the chamber 26 and the chamber 29 within the
oiîset portion 2|. From Figure 4 it will be noted
that the width of the mouth 25 is substantially
the width of the chambers 26 and 29.
15
20
25
30
`
Carried by the housing I5 and projecting pref
erably substantially horizontal from the rear 35
ward end wall I8, may be a hand grip 30. This
han-d grip 3.0 is disposed above and spaced from
the offset portion 2| so that the operator, grasp
ing the hand grip 30, may extend his fingers into
the space 3| between the hand grip 30 and 0E
set portion 2|. The hand grip 30 may be circu
40
lar in transverse cross section and is consider
ably of less diameter than the width of the orf
set portion 2|. If desired, a bridge 32 may join
the offset portion 2| and hand grip 30 at the 45
rearward end 33 of the latter. Extending through
the hand grip 30 may be a bore 34 accommodat
ing a conductor to be later described as well as
electric switch means associated with said con
ductor.
This bore 34 extends to and opens into 50
the chamber 26.
The side wall I8 of the housing I5 may be
provided with an opening 35 and a hinged clo
sure 36 therefor. Suitable latches 3l may be
provided. to retainthisrclosure in a closed posi 55
2
2,120,252
tion.
Furthermore, the closure 36 may have a
pair of spaced apart perforations 38, providing
bearings for a pair of spindles later described.
The opposite side wall |9 may have a pair of
spaced apart circular recesses 39 with the axes
of one perforation 38 and recess 39 in alignment
and the axes of the other perforation 38 and
recess 39 in alignment.
Carried by theA housing l5, are, preferably, a
the machine is resting upon said surface. In the
example shown, a plurality of spaced apart cas
tors 55 may be resiliently mounted, as is generally
well known in the art, and disposed at suitable
positions, extending below the housing |5 as
shown in Figures l to 3. When a slight down'
ward pressure is placed upon the handle grip 30,
the entire housing will be lowered so that abrad
ing material upon the peripheries of the rollers
lO pair of spaced apart rotating members or rollers « 4|) «will come into contact with the surface to
be worked upon by the abrading machine.
40. Each roller 40 preferably has flat, parallel
Now as for the abrading devices B, any selected
ing end faces 4|. From one endvface 4| of each`
extends a spindle 42 and fromçtheV opposite end
face 4I extends a spindle 43 provided with a
15 pulley or wheel 44. The spindlesv 42 extend into
the perforations 38 when the closure 36 is closed.
two of whichmay be employed by the abrading
machine at one time.
Each of these includes a
4tubular member 6D, with the circumference of 15
the inner periphery thereof of a size so that it
will be snugly accommodated upon the rollers 40.
with suitable ball bearings and housings 45 en-Y -~ Each tubular 4member-601s provided with a plu
circling the end portions of the spindles 43 and rality -of spaced apart lugs or projections 6I, V
As for the spindles 43, they may be provided
20 accommodated within the recesses 39.
shaped in transverse cross section, and these ex
20
tend- longitudinally of the tubular members l6|)
plurality of spaced apart longitudinally extend-» from the inner peripheries thereof. Each tubular
ing peripheral' grooves 46. `VThese grooves 46 are member 68 is also provided with va longitudinally >
V-shaped; A’asgviewed' from thev end faces 4| of extending slot 62, having a Width less than the
25
25 the rollers 40 and, preferably, three of Vsuch width of the grooves 41 of the rollers'40 so that,
groovesY 46 areY provided, equally Aspaced apart when the tubular members 60 are upon the roll
over the periphery of the rollers 4|l. Each roller Vers 48,-a portion of the tubularA members will
Preferably, each'roller `40 is provided with a
4U may carry a second> form of peripheral groove
overhang the grooves 41 when a slot 62 of one
41, extending longitudinally ofthe roller. This
tubular member 69 is over a groove 41 of one -
30 groove 41 preferably has facing side walls 58 and
a bottom 49 which‘may be arcuate or flat, but,
roller 48, -as shown in Figure 3, providing by this 30
arrangement, a substantially T-shaped groove.
preferably, arcuate. The groove 49 is relatively
The lugs 6| are accommodated within the V
wider than grooves 46 and may be spaced an
equal distance `from the two nearest grooves 46.
shaped grooves 46.
of rotation of the rollers 40 are disposed so that
a portion of the rollers extends below the bottom
of the housing '|5. It should also be noted that
having a coating '1| of adhesive lretaining' an
abrasive 12, such as grit, thereon. The length of
»
The section of abrading material C may’com- .
~ As may be seen from Figures 1 to 3, the axes ‘ prise a suitable length 10 of flexible material
the mouth 25 of the offset portion -2| faces the
40 periphery of one of the rollers 40, being disposed`
so that the plane of the inner surface'of the
upper wall 23 of the oifset portion 2| extends to
about or above the axis of the nearest roller and
thatY the'plane of the inner surface of the lower
45 wall 24 of the oiîset portion 2| extends well below
this section of abrasive material C is preferably v
slightly greater than the circumference of the outer periphery of the tubular members 60 and 40
its width maybe substantially the same as that v
of the tubular members 60. The length 10 of
flexible material may have two substantially like
side edge portions 13, free of grit, and each pro
vided with a length’14 of material, substantially 45
U-shaped in transverse cross section, extending
this‘axis. The nearest adjacentv roller is, pref
erably, spaced quite closely to the mouth 25. The ’ along the edges of the edge portions 13 and over
direction'of rotation of the rollers 40 is indicated lapping a part of these portions. These lengths
by arrows in Figure k3 and material removed by 14 of material may be ribbons of metal, suitably the
‘abrasive employed on the rollers 4|l‘wi1l be bent to the proper U-shape, «and secured to the 50
50
thrown‘mainly into the compartment within the ’ edge portions 13 in any approved way, such as »
by the use of adhesive. They not only protect
offset 4portion 2|.
these edge portions against tearing, but they
Any approved means may be'employed to ro
tate theïrollers 40 (thru the medium of'a gear are also provided so that when-the sections C are
disposed about the outer peripheries of the tu 55
55 drive, a chain drive or a‘belt and pulley). In
the Yexample shown, >a conventional V‘motor 58 bular members 60, with the abrasive 12 out
is employed in association with a belt and pulleys wardly, the edge portions 13 will be accommo
and secured,\for example,` to the wall I6 so that ' dated within the grooves-41, with the adjacent
it will be above of and clear of the rollers 40. portions of the sections C extending through
the slots«62. The sections of abrasive material D 60
60 A suitable conductor 5| may be connected with
the motor, as is well known in the art, and extend are retained upon the tubular members 60 and
rollers 40 simply by this‘gripping action between
through the bore 34 in the hand grip 3U and pro
the vportions of the sections C within the slots
ject from thence to any suitable source of elec
tric energy. If desired, thehand grip 40 may and grooves and the walls of these slots 'and
grooves, plus the contact of the sections C with 65
65 carry a conventional electric switch, having’ a the peripheries of the tubular members 60. Since
switch actuator or button 52 and operatively con
nected with the conductor 5|, as is'well known sections of abrasive material may be provided,
carrying various sizes of abrasive 12, it is apparent >
in the art.
thatY a selection of sectionsC may be provided
From the pulley 53 of the motor 50 may ex
tend a suitable belt 54, operatively connected and from this selection the proper sections chosen 70
for a particular job. '
with the pulleys 44 upon the spindles~ 43.
The abrasive device D includes a tubular mem
Any approved means may also be employed,
ber 80, with the circumference of the inner pe
if desired, to resiliently urge the housing I5 up
wardly so~ that, normally,_the peripheries of the -riphery thereof f of a size vso that it will be snugly
accommodated upon the rollers 4|).Y AEach tubu
75 rollers 40"wil1`be spacedabove‘ a'y surface when "
2,120,252
lar member 80 is provided with a plurality of
lugs or projections 8|, V-shaped in transverse
cross section and these extend longitudinally of
the tubular members 80 from the inner periph
eries thereof. The tubular members 80 may have,
extending from their outer peripheries, suitable
abrasive material, in this case, Wire or similar
bristles 82.
The abrasive device E includes a tubular mem
10 ber 90, with the circumference of the inner pe
riphery thereof of a size so that it will be snugly
accommodated upon the rollers 40. Each tubular
member 90 is provided with a plurality of spaced
apart lugs or projections 9|, V-shaped in trans
15 verse cross section, and these extend longitudi
nally of the tubular members 60 from the inner
peripheries thereof. The outer peripheries of the
tubular members 90 may be scored, or grooved,
as at 92, to provide an abrasive surface, similar
20 to the surface of a iile or rasp depending upon
the material to be Worked.
From the above, it will be seen that a novel
abrading machine has been provided so that it
may be easily and expeditiously equipped with
25 any selected tubular member, such as B, D or E,
simply by unlatching the closure 36. raising the
closure and slipping suitable abrading devices
over the rollers 40, the lugs 6|, 8| or 9|, depend
ent upon the abrading device employed, fitting
30 into the grooves 46 of the rollers 40, whereupon
the abrading devices will be held again at inde
pendent rotation, Whereupon the closure 36 may
be lowered and the perforations 38 accommo
date the spindles 42 of the rollers 4|).
When the machine is in use, most of the ma
35
terial removed by the abrading devices Will be
projected into the chamber Within the offset por
tion 2| of the housing |5 and this offset portion
2| will also protect the hand of the operator
40 against injury when the hand grasps the hand
grip, since the offset portion is relatively broad
and is below the hand grip.
The Work may then proceed until it is desirable
to substitute, for the abrading devices then in
45 the machine, others having a different abrading
surface and it is now apparent that the substitu
tion may be easily made.
'I'he abrading devices B, D and E are easily
stored and may be grouped according to abrasive
50 surfaces, so that little time may be employed in
selecting the proper device.
Since a sandpaper abrasive wears down rela
3
tively quickly, by providing the abrasive section
C, a Worn abrasive section C may be quickly re
moved and a new section C may be applied, as is
now apparent.
Various changes may be made to the form of
invention herein shown and described, Without
departing from the spirit of the invention or the
scope of the claims.
`
What is claimed is:
1. In an abrading machine, a housing, a roller 10
rotatably carried by said housing and provided
with a substantially V-shaped peripheral groove
and a second peripheral groove having substan
tially paralleling side walls, said grooves being
spaced apart and extending longitudinally of said 15
roller, a tubular member detachably mounted
upon said roller, having a V-shaped lug project
ing from the inner periphery thereof and extend
ing longitudinally of said tubular member with
said V-shaped lug accommodated in said V 20
shaped groove, said tubular member being pro
vided With a longitudinally extending slot having
a width less than the width of the second named
groove and disposed over said second named
groove, and a section of abrading material re 25
movably extending over the periphery of said
tubular member, with the end portions of said
section extending through said slot and into the
second named groove.
2. In an abrading machine, a housing, a roller 30
rotatably carried by said housing and provided
with a substantially V-shaped peripheral groove
and a second peripheral groove having substan
tially paralleling side Walls, said grooves being
spaced apart and extending longitudinally of said '
35
roller, a tubular member detachably mounted
upon said roller, having a V-shaped lug project
ing from the inner periphery thereof and extend
ing longitudinally of said tubular member With
said V-shaped lug accommodated in said V
shaped groove, said tubular member being pro 40
vided with a longitudinally extending slot hav
ing a width less than the width of the second
named groove and disposed over said second
named groove, and a section of abrading material
removably extending over the periphery of said 45
tubular member, with the end portions of said
section extending through said slot and into the
second named groove andv into engagement With
the overlying inner face of said tubular member
50
and the Walls of said second named groove.
VASSAF KADRI.
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