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Патент USA US2121161

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June 21, 1938.
Filed July 9, 1935
“T-_EEÈ *I*
TEE. `
Patented June-2l, 1938 '
‘ UNITEo STATES APliTEN-'r 4orrlcls
Curt Neufeld, Fairview, N. J.
_Application July `9, 1935', Serial No. 30,450
5 Claims. .(Cl. 42-91)
This invention relates to brushes, and more The endof the-stud projects from the lower end
particularly to brushes for use as gun swabs.
of the cavity, and is screw threaded to be appli
The objects of the invention are-to provide an _cable
to the end- of a handle Il.
handle is
improved brush as characterized; to provide a . preferably of hollow aluminum or The
aluminum al
brush which will clean >the bore lrifiing; to provide' _loy tubing so as to be light and strong;
and the 5
a brush which Awill not bind when reversing `its i end of the tubing is closed with a plug I2 at its
`direction of cleaning motion; to provide a metal end next the brush body portion so as to receive
body for the brush; .to enable the'bristles to _be
stud in a suitably provided threaded hole
replaced when worn; >tov provide for adequate said
axially disposed in the plug.v Some such means
10 gripping area on the‘handle; to provide alight
but sturdy structure; to secure‘simplicity of con
struction and perfection in operation; and to ob
tain other advantages and results as may be
`brought out inthe following description.
`Referring to the -accompanying drawing in
which ylike numerals of reference indicate simi
lar parts throughout the several views;`
Figure 1 is an elevation of a> brush for use as a
- as _a lateral pin I3 may be employed to hold the l0
plug fast in the handle tubing.>
AIt will be notedin _the construction of the brush
body portion, that the same is preferably hollow
and of metal, aluminum or an aluminum alloy
also being used by preference in order that the l5
body portion may be both light and strong. An
aligning lpin or the like I4 maybe provided ad
jacentthe outer end of one of the sections to fit
gun swab constructed in accordance with the> within _a female part, such as the 'hole I5 shown
present invention;
p Figure 2 is asimilar elevation o1' thebrush
revolved ninety degrees from; the position shown
in Fig._1;
in the other section. The' .two sections are se- 20
cured together by suitable means, such as the
pair of diametrically disposed screw-bolts I6, I6,
the heads of which are preferably countersunk.
`Figure 3 is a centrallongitudinal section of the _ The'
outerjend of the body portion is semi-spheri~
brush, as >'upon line 3-3 of Fig. 2;
or dome-shaped by preference so that no damFigure v4 is an elevation> of the body portion of cal
agecan be done'by it if engaged against the
4the brush with the removable section thereof f gun bore in use, and further to aid in the in
_ taken oiiv’; and
Figure 5ï is an end view of the portion of the troduction of the _brush into a gun bore.4
'_ A particular feature‘of the present invention
brush'shown inFig. 4.
in the structurepertaining to the bristles.
4In the Ispeciiic embodiment of the invention - resides
It is to be observed first that the same are relaillustrated in said drawing, the reference numeral tively
short with respect to the diameter of the
I_indicates the body 'portion of the brush, which body POrtion
of the brush. This enables me to
is shown as having a main body section 2 and a
vuse hair bristles _and maintain adequate rigidity
as removable complementary section 3 which to
or stiii’ness to be effective upon the carbon o_r
gether forms a complete cylindrical shape at the ' other depositv in a gun bore. In the‘second place, 35
exteriorwith the outer'end semi-spherical. The the bristle clusters ,are arranged upon lines longi
brush body provides clumps of bristles 4 >.entirely tudinally
of the body portion of the brush corre
around the body portion and for a length of said
_body portion next the semi-spherical portion to
the inner end of the complementary section.'4 At
spondin‘g to the angle, line or curvature of the
,riiiin'g provided in thebore of a gun. 'I‘he clus- 40
ters of bristles are thus in a plurality of longi
Vthe lend of -thecomplementary section last men
tioned,‘_ the main section has acompletely cylin-- tudinal series and will thus tend to enter and fol
drical -shape'thus providing a shoulder 5 against low the >riiling in use. The anti-friction‘attach
which rthe end'of the complementary section will ment ofthe brush body to the handle introduces
abut. vBelow the shoulder 5,"said main section 2` 4the least possible interference with this action 45
of the brush following the ,twist of thev riñing.
twist of the brush> willreverse whendwith- '
end of this neck is `formed with an end cavity 6 Y drawing
the brush, andjthis possiblev twisting Aas
well as_the fiexi‘bilityof the bristles, lends itself
:ing therein a seat ‘I'ior a suitablefball-race or _ to
proper operation of the brush and avoids the 5o
other' anti-friction bearing 8. -Said Ibearing is _' usual
tendency injgu'n swabs 'to ~wedge in the bore
.. provides a reduced cylindrical neck. vThe lower
held in plac'e by a' collar 9 threaded into the lower ' when the direction of movementßofy the swab is '
:end ofthe cavity.' . Aj stud I0 ls mounted rotat
reversed. This is _of great 'importance in the
ably inthe race t'o'have both 4anti-friction rotate art, and one-of _the most serious dimculties en
able 'motion' and anti-friction thrust-support, countered in cleaning guns. 'v'l’he‘ invention ap- v55
plies very particularly to guns of cannon caliber,
that is, three to sixteen inches and even more in
bore diameter, but is not limited thereto, as it
may also be made and used for smaller sizes of
I wish to also emphasise the fact that the brush
substantially corresponding tothe riding o! a
gun bore.
3. A brush as characterised, comprising a sub
stantially cylindrical and hollow metallic body
portion having a main section and a complemen
tary section of less length than said main sec
tion and having its length completed by a ccm
annular part ot the main section, said
eil'ects ot .oil and other matter encountered in pletely
cleaning guns, and enabling the brush to be completely annular part having an uninterrupted 10
seat therein, a bearing Aon said seat. bristles in.
washed with gasolene or other fluids without in-V said
and means for securing said sec
jury. The hollow construction also makes it ~ tions sections,
separably together wherebythe bristles may
economically practical to replace the bristles with
body is of metal. this fact avoiding the deleterious
new ones when required, thus keeping the brush _ be renewed as required.
- 4. A gun swab comprising a brush body portion,
in service for an indefinite length of time.
Having thus described the invention, I claim:
l. A brush as characterized, comprising a sub
stantially cylindrical head, clusters of bristles
projecting from the cylindrical surface of said
head, said clusters'of bristles being arranged to
project in longitudinal series the end clusters oi'
each series toward one end of the head being
substantially equally spaced around the head and
constituting points through which pass theoretic
parallels to the axis of the head on the cylindri
cal surface of said head, said series being angular
with respect to said parallels with the clusters
having substantially equal spacing from each
a handle attached to said brush body portion 15
for manipulating the same, an anti-friction con
nection between said brush body and handle, and
clusters of bristles arranged in series the end
clusters of each of which series toward one end
of the head constitute points through which pass
theoretic parallels to the axis ot' the head on the
cylindrical surface of said head, said series all
sloping with respect to said parallels and each
series crossing a next adjacent parallel at a
greater distance longitudinal o! the parallel 'than 25
the distance separating two alternate parallels
for rotating the brush body in use to i’ollow the
other within a series as the spacing between the ~ riiling of the bore of a gun being cleaned.
5. A brush comprising a substantially cylindri
clusters/of one series and the next, and each
head, clusters of bristles projecting fromthe 30
series starting upon one of said parallels which
surfaceot said head in longitudinal
crosses a next adjacent series substantially mid
series, the end clusters o! each of which series
way of the length of said adjacent series. '
toward one end of the head constitute points
2. A brush as characterized, comprising a sub
stantially cylindrical head, clusters of bristles through which pass theoretic parallels to the axis 35
projecting from the cylinder in longitudinal series, oi' the head on the .zylindrical surface of -said
the end clusters of each series toward one end head, said series all sloping with respect to said
of the head constituting points through which parallels and each series crossing a next adjacent
pass theoretic parallels to the axis of the head parallel at a greater distance longitudinal ofthe
on the cylindrical surface of said head, said parallelthan the distance separating two alter
nate parallels.
series having angular relationship to said paral
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