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Патент USA US2412275

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Dec. 10, 1946.
J. KLOPVOVIC
'
AUTOMATIC NUT GUN
Filed Aug. 15, 1944
I 2,412,275
Patented Dec. 10, 1946
‘2,412,275
UNITED STATES PATENT OFFICE
2,412,275 ’
AUTOMATIC NUT Gun
_
,
‘
‘
Joseph Klopovic, Euclid, Ohio
Application August 15, 1944, Serial No. 549,525‘
7 Claims. (01. 81-125)
.
2
1
This invention relates ‘to wrenches, and more
ti-on of thebarrel ‘can be readily ‘controlled by.
particularly to magazine wrenches adapted for
the'clutch member 3.
‘Adjacent. the closed end of the barrel a re
stricted bore 6 is provided as by a suitable bush-i
g. ing'5 and in the bore 6 is slidably located the
enlarged end 8 of a'guide rod 9 axially positioned
with respect to the barrel l. A compression.
spring ill is enclosed between the cap 2 and the
enlarged head 8 operating to force the ‘guide rod
9 toward the open end of the barrel I.
Within the barrel I is positioned a spiral spring,
31 circling the guide rod 9, therear end of spring
31 bearing against bushing 5 and the forward
end of the spring 3| bearing against a follower
15 30 having a hub 29 slidable on guide rod 9, this
follower 39 being adapted to engage and press
forwardly toward the open end of barrel I the
use in the rapid assembly or disassembly of parts
secured by bolts or nuts associated with threaded
studs and adapted to accommodate a plurality of
such nuts.
An object of the present invention is to pro
vide a tool of the character indicated, so con
structed that in the application of a nut to a
bolt or threaded stud the nut can be driven home
and properly seated without regard to whether
the bolt or stud projects beyondthe outer face
of ‘the nut without any possibility of the bolt
threading into the next adjacent nut in the maga
zme.
.
A further objector the invention is to provide
a tool of the type indicated adapted to feed the
supply of nuts forwardly in proper alignment and
without possibility of jamming in the tool.
stock of nuts within that barrel.
‘ ‘
The nuts N are freely slidable upon the guide
‘Further objects will appear in the course of 20 rod 9 and are retained in the barrel normally by
balls 23, extending through radially spaced holes
the following detailed description.
24 adjacent the open end of the barrel and pressed
, The invention consists in the novel construc
inwardly by springs 22 seated in longitudinally
tion, arrangement, and combinations of parts
hereinafter more particularly described and
extending slots‘ 2| cut in the ‘outer face of the
25
‘One sheet of drawings accompanies this speci
Normally‘ the tool with ‘a. supply of nuts in the
magazine occupies the position illustrated in Fig?ca'tion as part thereof, in which like reference
ure 1 with the balls 23 resiliently restraining the
characters indicate like parts throughout.
claimed.
.
.
In the drawingi
‘
barrel.
'
'
Figure 1 is a longitudinal‘ medial cross ‘section
through the improved tool;
‘ _
a
Figure 2 is a fragmentary, enlarged scale, me
dial longitudinal cross section through the for
ward end of the..tool, showing the forward nut
in engagement with a bolt; and
.
.
passage of the outermost nut.
To prevent the bolt or threaded stud from pick
ing up more than the ‘outermost nut, the guide
’ rod 9 has its forward end provided with a bore in
, which are seated two spacedsprings l2 having.
their rear ends secured to guide rod 9 as in slots
35 provided in a bushing l I. The forward free ends
.
Figure 3 is a transverse cross section taken on
line 3—3 of Figure l.
.
'
Referring to the drawing, the tool comprises
of the springs l2 are turned outwardly‘ and formed
as thread grippers |3--l3 extending" tnr'ougnra
dial holes I'4--l4 adjacent the forward endo'f the
guide rod 9. The forward bore of the guide rod
a barrel I having one end closed by a cap 2
threaded or otherwise secured on the end of the 40 is closed as by cap l5 screw threaded into the
barrel, the cap 2 being rigidly associated with a
clutch member 3 of conventional design, the Other
member 4 of the clutch being adapted to be con
nected to a ?exible rotary drive shaft by means
of which the barrel I may be rotated on its 1on
gitudinal axis as desired.
A cylindrical hand clasp 25 is rotatably mount
bore, this cap l5 having a central hole to slidably
receive the stem I‘! which has upon its rear end
a cam member I8 and upon its forward end a
bolt engaging face plate IS. A spiral spring 29
45 is interposed between the bolt engaging plate [9
and the forward end of the cap [5 tending nor
mally to force the plate I9 forwardly and thus
retract the cam I8 from between the spring mem
ed on the forward end of the barrel and secured
against longitudinal motion thereon as by a pin
bers l2, thus permitting the thread grippers
23 having its inner end engaging an annular 50 I3--l3 to retract within the guide rod 9 and re
lease the adjacent nut. In operation, as the
groove 21 in the barrel 1. From the foregoing,
bolt B threads through the outermost nut its
it will appear that the tool may be held by the
operator by means of a freely rotatable sleeve or
end will contact the plate l9 and force the cam
member I8 rearwardly, thus pressing the springs
hand grip 25 adjacent its forward upper end and
directed toward a bolt as desired, while the rota 55 l2 apart and forcing the gripper members l3-I3
.
3
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by their rear-ends to a centering member and
having their forward free ends outturned to en
gage the threads of an adjacent nut, associated
with a slidable member normally biased toward
9 and holding that nut and all other nuts in the
magazine in position. When the plate I9 has been 5 the open end of the barrel and having a cam
shaped part adapted'to force the free ends of the
forced back to its limit, the outermost nut will
spring members apart and a bolt engaging face
be forced forwardly against the pressure of balls
directed toward the open end of the barrel.
23 until properly seated. ‘
‘ ‘5,, Amagazinewrench comprising a barrel hav
The inner bore, of thebarrel _I will, of course, bev
into locking engagement with the threads of the
next adjacent nut to the rear, thus locking said
next adjacent nut with respect to the guide rod
shaped to, cpn'f'orm with the contour ,of} the ./_'n_uts:
ing an open end,v an axially disposedguide mem
10
to be used and‘siz‘ed‘to‘permit the nuts sliding
freely within the bore upon the guide rod 9. To ,
facilitate the application of the tool in situations‘
‘
where it cannot be held in true alignmentwith the: "1
bolt or stud, the outer end of the bore of barrel I 15
may be tapered slightly inwardly as indicated at =
33 so as to permit a rocking of the rear-end of the
outermost nut to facilitate its engagement with
the bolt threads.
'
Various modi?cations-in the mechanical form
and 'co'nstruction'of' the various parts will readily
suggest themselves to those skilled in the art but
all within the scope of the present‘ invention as
claimed.
’
"
'
ing.
6. A magazine
'
'.r
wrench comprising
'
'i
Ia barrel hav
guide member within the barrel on which nuts ,
can slide, spring means biasing the guide toward
the open end of the barrel, a spring pressed fol
1. A magazine wrench comprising a barrel,
means Within the barrel to force nuts therein to-‘
Ward an open end of the barrel, means at said‘
open' end to resiliently retain the outermost‘
lower slidable on the guidebiasing the nuts on
the guide toward the open end of the barrel, nut
engaging springv ?ngers carried by the guide, a
member slidable in the forward end of the guide
having a rearwardly directed cam portion adapted
to operate the spring fingers, into nut engaging
position, said slidable member having a forwardly
nut and nut-gripping means within the barrel
having an operating part normally positioned
within the bore of the outermost nut arranged to
bexengaged by the end of a bolt threading through
said outermost nut toiactuate the nut gripping
Idirected bolt engaging face with spring means
biasing said slidable spring operating member to
means to ,lock in position the next adjacent nut
and occlude the bolt from said next adjacent
'
f
I
,
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,
axial guide to engage the innermost nut, opposite
13'. disposed spring ?ngers secured to a forward
part of the axial guide, the forward ends of said
?ngers bent outwardly to form thread engaging
parts, a member slidable in the forward end of
the axial guide having a rearwardly directed cam
part adapted to press said spring ?ngers apart
and a forwardly directed bolt engaging face'of a
size to occlude an entering bolt‘ from a nut open
ing an open end, an axially disposed slidablev
‘
Having thus described my invention, I claim:v
nut;
lb‘er'within the barrel on ‘which a plurality of nuts
can slide, a spring pressed follower slidable on said
ward the open end of the barrel.
.
'
'
7. A magazine ‘wrench comprising an open
gaging-means operated by the entering bolt com
ended barrel, means adjacent the open end to
prises nut'gripping members and the operating 40' resiliently restrain the passage of nuts there
through, a slidable axially disposed guide within
part thereof comprises a slidable member having a
the barrel, spring means biasing, the guide toward
bolt engaging face and means for forcing thenut
gripping members into .engagementwith‘the ad
the open end of the barrel, a follower slidable on
the guide, spring means'biasing the follower to--'
jacent nut to‘ lock the nut in position and limit;
45 ward the open end of the barrel, spring ?ngers
the movement of the slidable member.
carried by the guide having their free forward
3; "I‘he'idevice'v of vclaiml' in which the nut- en
2. The device of'claim 1 is which thenut en
gagingmeans operated by the entering bolt-'comprises oppositely disposed spring members secured
ends outwardly bent to form thread engaging
members, a slidable member mounted on the
by their rear-ends to a centering member and,
having their forward free ends outturned to .en
gage the‘ threads of an adjacent. nut, associated?
with'a slidable member having a cam shaped part‘
adapted to force the free ends of the spring me'm-r
bers apart and a bolt engaging face directed
toward the openrend of the barrel.
.
-
.
4; The device of. claim 1 in which the nut en
gaging means operated by the enteringboltcom-v
prises oppositely disposed spring members secured
forward end of ' the guide formed‘ with a
' rearwardly directed cam partadapted to wedge
the spring ?ngers into nut engaging‘ position‘
and a forwardly directed 'bolt engaging face,
spring meansvbiasing the slidable member into
55.
nonoperative position, 'a hand ,grasp freely. ro-i
tatable on the barrel and vmeans for engaging
the barrel with a source of rotary power.
'
JOSEPH KLOPOVIC."
‘
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