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Патент USA US2116392

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Patented May 3, 1938
2,116,392
UNITED STATES
PATENT orrice
2,116,392
CLEANING DIWIOE
Arthur P. Grasser, Cleveland, Ohio
Application. July 5, 1935, Serial No‘. 29,898
5 Claims. (Cl. ‘lb-91)
My invention relates, in general, to Cleaning bore of the ?re arm will become rusted and cor
devices, and more particularly'to cleaning devices
adapted to be inserted into a longitudinal open
ing such as, for example, the bore of a gun for‘
5 cleaning the deposits from the inner surface of
the longitudinal opening.
'
-
An object of my invention is the provision of
a cleaning device adapted to be inserted into the
bore of the barrel of a gun and shear the lead
10 and other deposits from the inner surface of the
bore.
A further object of my invention is the pro
vision of a cleaning device comprising a longi
tudinal unit having a recess and an expansible
15 shearing member adapted to ?t in the recess;
wherein the entire combination may be inserted
into the bore of the barrel of a gun and cause
the expansible shearing member to engage and
shear the deposits from the inner surface of the
bore.
20
Another object of my invention is the provision
of a cleaning device comprising a longitudinal
unit constructed of a plurality of assembled parts
and arranged to hold‘ an expansible shearing
25 member, so that when the cleaning device is in
serted into the bore of a gun, the expansible
to
pitted places more than it will to a smooth sur
face.
.
10“
Upon the application of my cleaning device,
this lead and other deposits is cut or sheared
away; at the same time smoothing the roughened
and pitted places.
With reference to the drawing, I have illus- Iii1
trated mylinvention in connection with a shot
gun which has a smooth bore being devoid of
ri?ing grooves. As illustrated, my cleaning de
vice is adapted to be removably attached to the
into
end of
thea bore
ramrod
of the
l5 and
barrel
arranged
iii of the
to be
illustrated
inserted
gun. In general, the‘ cleaning device comprises a
longitudinal body unit constructed of a plurality
of assemblable parts and two spaced eXpa-nsible
shearing members 26 mounted upon the longi“ ‘25
tudinal body unit. Inasmuch as the construc
tion of each expansible shearing member and
each end of the longitudinal body unit is the
shearing member engages and shears the lead and
other deposits from the inner surface of the
~ same, I have designated the corresponding parts
bore.
30
A still further object of my invention is the by like reference characters.
Themain longitudinal body member 25 is round
provision of a cleaning device having an ex
pansiblei shearing member in the form of a coil.
Other objects anda fuller understanding of
my invention may be had by referring to the fol
35 lowing description and claims taken in conjunc
tion with the accompanying drawing, in which:
Figure 1 represents a view of a gun into which
my ‘cleaning device may be inserted.
‘
Figure 2 is an enlarged view of a portion of
40 the barrel of the gun and illustrates my cleaning
device when mounted in the bore of the gun,‘
Figure 3 is an exploded View of the various
assembled parts that constitute my cleaning de
vice,
45
roded, and if allowed to continue the bore will
become pitted underneath the lead and other
deposits. .‘If an attempt is made to clean the gun
after it has once become pitted, the inner surface “5
of the bore will still be rough and upon further
shooting, the lead and other deposits will have a
greater tendency to adhere to these rough and
which the expansible shearing member 26 is
.
Figure 4 is a modi?ed view of my cleaning de
vice in that the expansible shearing member is
constructed in the form of a coil, and
Figure 5 shows the modi?ed form of my clean
ing device when inserted in the bore of the barrel
of the gun.‘
and has an outside diameter that is somewhat
less than the inside diameter of the bore of the
barrel ll] of the gun. Upon each end of the
longitudinal body member 2i is pro-vided a round 35'
extension 22 which has a diameter less than that
of the main body member 2 I. The outer ends of
the extension 2'2 are provided with male threads
23 adapted to receive the nuts 21. A stepped
collar 2t having a central opening is arranged to 40
?t snugly but freely over each of the extensions
22. As illustrated, the stepped collar 26 is pro
vided with a reduced stepped portion 25 about
v
In the maintenance of the bore of a ?re arm, it
mounted so that when the stepped collar 25% is 45
secured against each end of the main body mem
ber 2| by means of a nut 21, there are provided
two spaced circumferential recesses for holding
the expansible shearing members against endwise
movement. The expansible shearing members 26 50
may be cut at a bias as indicated by the reference
is highly essential that the lead and other resi
due, which is deposited upon the inner surface
character 28. As illustrated, the shearing edges
of the expansible shearing members are substan4
of the bore, be cleaned after using the ?re arm.
tially square so that when my cleaning device is
inserted into the bore of the barrel of a gun, the 55»
55 If the lead or other deposits is- not removed, the
2
2,116,392
said expansible shearing members make a good
clean shearing action to remove all of the lead
and other deposits. The longitudinal body unit
is long enough so as to avoid rounding of the
square edges of the expansible shearing mem—
bers as the cleaning device is inserted into the
bore of the barrel of a gun.
,
The threaded extensions 23 are longer than
the thickness of the nuts 21 so that the threaded
10 part which extends beyond the nut 21 may be
threadably engaged to the female threads IS in
the metal end l6 that is pinned to the ramrod
l5 by means‘of the pin H.
In using my cleaning device, it is ?rst inserted
15 in the enlarged breeched end H of the barrel
of the gun. The outside diameter of the expansi
ble shearing members 25 is slightly less than the
inside diameter of the enlarged breeched end ll
of the barrel. This means that the cleaning de
20 vice may thereby be easily inserted into the
breeched end of the barrel. Then the ramrod I5
is pushed until the cleaning device passes the
restriction i3 and enters the longitudinal main
section of the barrel It). At the place where the
expansible shearing members 26 pass the restric
tion l3, the ramrod ! 5 may be pushed quite hard
until the expansible shearing members 26 are
fully compressed. The bore of the main longi
tudinal portion of the barrel [0 is straight and
30 as the cleaning device is pushed therealong, the
expansible shearing members 26 shear and cut
an'opening which is adapted to snugly but freely
engage a reduced portion 34 of the body mem
ber 3|. The shearing edges of the coil 31 are sub
stantially square so that as the cleaning device
is pushed through the bore of the barrel of the
gun, it engages and cuts the lead and other de
posits from the. inner surface. As shown in Fig
ure 4, the coil 3'! is shorter than the space between 10
the ?xed head 32 and the removable head 33, but
when the cleaning device is inserted into the
bore of the gun, the outside diameter of the coil is
reduced to the inside diameter of the bore of the
gun in which case the length of the coil 31 elon~ 15
gates and ?lls substantially the entire space be
tween the ?xed head 32 and the removable head
33. The application of my modi?ed form of my
cleaning device is substantially the same as that
described with reference to the preferred form 20
of my invention as shown in Figures 2 and 3. In
both forms of my invention, it is noted that the
action is to shear and clean the lead and other
deposits from the bore of the barrel of the gun.
Although I have described my invention with 2.5
a certain degree of particularity, it is understood
that the present disclosure has been made only
by way of example and that numerous changes
in the details of construction and the combination
and arrangement of parts may be resorted to 30
without departing from the spirit and the scope
the lead and other deposits from the inside sur
face of the bore of the barrel. The cleaning de
vice is pushed until the forward end thereof
of the invention as hereinafter claimed.
I claim as my invention:
engages the restriction l4 which leads up to the
choke’ l2 at the forward end of the barrel. At
into a barrel of a gun for cleaning deposits from
this point the cleaning device may be Withdrawn
entirely from the bore of the gun and whatever
loose particles which may remain in the bore of
the gun after the cleaning device is removed, may
be wiped out in the usual manner by means of a
45
ber 3| by means of the nut '36 which engages the
male threads 35. The removable head 33 has
polishing cloth or the like. The choke l2 at the
end of the gun is relatively short and it appears
advisable from common practice not to attempt
to ‘clean or polish the choke" by a shearing action
as provided by my invention but can be cleaned
by other means since it is readily accessible.
The expansible shearing members 267are con
structed of relatively soft material so that it is
50 not hard enough to cause any damage to the bore
of the gun. Yet on the other hand, the expansible
shearing members 26 have a. good wearing quality
so that they have a relatively long life. It is
found in actual practice that the expansible
55 shearing members 26 may be constructed of suit
able bearing material such as bronze or the like.
In some cases where the bore of the barrel of
the gun has become pitted to such an extent that
the passing of the cleaning device through the
1. A cleaning device adapted to be inserted
the inner surface thereof, said barrel having an
enlarged breech, a tapered restriction, and a
relatively long bore, comprising, in combination,
longitudinal means having a circumferential re—
cess with two side walls, a resilient and expansible 40
open ring shearing member adapted to ?t into
the recess, the said shearing member having two
sides for engaging the side walls of the recess,
an inner peripheral surface having a diameter
less than the diameter of the longitudinal means 45
and an outer peripheral surface having a diameter
greater than the diameter of the longitudinal
means for engaging the inner surface of the bar
rel of the gun, the outer peripheral surface of
said shearing member when in its resiliently ex 5.0
panded form being of a diameter to permit the
ready insertion thereof into the breech of the
barrel and being of a diameter when gradually
and resiliently contracted after passing through
the tapered restriction to expansibly engage the 55
bore with strong resiliency for shearing deposits
from the bore, said shearing member also hav
ing a shearing edge at the junction de?ned by
one of said sides and the outer peripheral surface,
60 bore of the gun is not suf?‘cient to remove all of ' and aligning means spaced longitudinally from 60
the pits, then my cleaning device may be used said shearing member and associated with the
to hone the inner surface of the bore by means longitudinal means for aligning the shearing
of very ?ne abrasive or pumice until the pits have member in the longitudinal opening and for caus
all been removed. In'the honing operation, the
65 expansible shearing members 26 which are pref
erably constructed of bronze may be replaced
by other expansible members. which give better
action than the bronze expansible shearing
members.
70
In Figures 4 and 5, I show a modi?ed form of
my invention in that the expansible shearing
member 31 is in the form of a coil which is mount
ed upon a longitudinal body member 3| having
a ?xed head 32 and a removable head 33 that
75 is connected to the other end of the body mem
ing the shearing edge to make intimate contact
with, and to shear the deposits from, the inner 65
surface of the barrel.
2. A cleaning device adapted to be inserted into
a barrel of a gun for cleaning deposits from the
inner surface thereof, said barrel having an en
larged breech, a tapered restriction, and a rela 70
tively long bore, comprising, in combination, 1on
gitudinal means having a plurality of parts
adapted to be assembled and secured together,
the arrangement of the said assembled parts
being such as to provide a circumferential recess 75
2,116,392
with two side walls, a resilient and expansible
open ring shearing member adapted to fit into
the recess, the said shearing member having two
sides for engaging the side walls of the recess,
3
adapted to be assembled and secured together
greater than the diameter of the longitudinal
and arranged to have a diameter less than that
of the bore of the barrel of the gun, the arrange
ment of the said assembled parts being such as
to provide a plurality of spaced circumferential
recesses, each recess having two side walls, a
resilient and expansible open ring shearing mem
ber adapted to ?t into each of said recesses, each
means for engaging the inner surface of the bar—
10 rel of the gun, the outer peripheral surface of
engaging the side walls of the recesses, an inner
an inner peripheral surface having a diameter
less than the diameter of the longitudinal means
and an outer peripheral surface having a diameter
said shearing member when in its resiliently ex
‘ panded form being of a diameter to permit the
ready insertion thereof into the breech of .the
barrel and being ‘of a diameter when gradually
15 and resiliently contracted after passing through
the tapered restriction to expansibly engage the
bore with strong resiliency for shearing deposits
from the bore, said shearing member also having
a shearing edge at the'junction de?ned by one
20 of said sides and the outer‘ peripheral surface,
and aligning means spaced longitudinally from
said shearing member and associated with the
longitudinal means for aligning the shearing
member in the barrel and for causing the shear
25 ing ‘edge to make intimate contact with, and to
shear the deposits from, the inner surface of the
barrel.
,
3. A cleaning device adapted to be inserted
into the barrel of a gun for ‘cleaning the deposits
30 upon the inner surface thereof, said barrel hav
ing an enlarged breech, a tapered restriction, a
relatively long bore, and a choke, comprising,
in combination, a longitudinal body member hav
ing an extension on one end, said longitudinal
35 body member having a diameter smaller than the
bore but larger than the choke, a stepped collar
having a reduced stepped portion and a central
opening to ?t over the said extension, means for
holding the stepped collar upon the said exten
40 sion, the arrangement of the longitudinal body
member and the stepped collar being such as to
provide a circumferential recess with two side
walls, a resilient and. expansible open ring shear
ing member adapted‘ to ?t into the recess, the
45 said shearing member having two sides for en
gaging the side walls of the recess, an inner pe
ripheral surface having a diameter less than the
diameter of the longitudinal means and an outer
peripheral surface having a diameter greater than
50 the diameter of the longitudinal means for engag
ing the inner surface of the barrel of the gun,
the outer peripheral surface of said shearing
member when in its resiliently expanded form
being of a diameter to permit the‘iready insertion
thereof into the breech of the barrel and being
of a diameter when gradually and resiliently
contracted after passing through the tapered re
striction to expansibly engage the where with
of said shearing members having two sides for
‘peripheral surface having a‘diameter less than
the diameter of the longitudinal means and an
outer peripheral surface having a diameter
greater than the diameter of the longitudinal
means for engaging the inner surface of the bar
rel of the gun, the outer peripheral surface of
said shearing member when inits resiliently ex
panded form being of a diameter to permit the
readyinsertion thereof into the breech of‘ the
barrel and being of a diameter when gradually 20
and resiliently contracted after passing through
the tapered restriction to expansibly engage the
bore with strong resiliency for shearing deposits
from the bore, each of said shearing members
also having a shearing edge at the junction de
?ned by one of said sides and the outer periph
25
eral surface, said shearing members being spaced
longitudinally along said longitudinal means so
as to align themselves in the barrel and to cause
the shearing edges to make intimate contact with,
and to shear the deposits from, theinner surface
of the barrel.
‘ 5. A cleaning device adapted to be inserted
into the barrel of a gun for cleaning the deposits
upon the inner surface thereof, said barrel hav
ing an enlarged breech, a tapered restriction,
and a relatively long bore, comprising, in com- '
bination, a longitudinal body member having a di
ameter less than that of the bore of the barrel
of the gun, a second member and a third member
respectively adapted to be removably connected
to each end of the longitudinal body member, the
4,0
arrangement of the longitudinal body member
and the second member and the third member
being such as to provide two spaced circumfer 45
ential recesses, each having two side walls, a
resilient and expansible open ring shearing mem
ber adapted to fit into each of said recesses, each
of said shearing members having two sides for
engaging the side walls of the recesses, an inner 50
peripheral surface having a diameter less than
the‘ diameter of the longitudinal body and an
outer peripheral surface having a diameter
greater than the diameter of the longitudinal
body, for engaging the inner surface of the bar 55
rel of the gun, the outer peripheral surface of
said shearing member when in its resiliently ex
panded formibeing of a diameter to permit the
strong resiliency for shearing deposits from the
ready insertion thereof into the breech of the
bore, said shearing member also having a shear
barrel and being of a diameter when gradually 60
ing corner at the junction de?ned by one of said
and resiliently contracted after‘ passing through
sides and the outer peripheral surface, and align
ing means spaced longitudinally from said shear
ing member and associated with the longitudinal
65 means for aligning the shearing member in the
barrel and for causing the shearing edge to make
intimate contact with, and to shear the deposits
from, the inner surface of the barrel.
4. A cleaning device adapted to be inserted into
the barrel of a gun for cleaning the deposits
upon the inner surface thereof, said barrel having
an enlarged breech, a tapered restriction, and a
the tapered restriction to expansibly engage the
bore with strong resiliency for shearing deposits
from the bore, each of said shearing members
also having a shearing edge at the junction de 65
?ned by one of said sides and, the outer peripheral
surface, said shearing members being spaced 1on
gitudinally along said longitudinal body so as to
align themselves in the longitudinal opening and
to cause‘ the shearing edges to make intimate
contact with, and to shear the deposits from, the
inner surface of the barrel.
relatively long bore, comprising, in combination,
longitudinal means having a plurality of parts
ARTHUR P. GRASSER.
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