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De@ 17» i946.
.Lv E. ANToNlDas
y
2,412,594
JIG BUSHING
Filedy May 28 , 1945
Ag’ Z ÉNVENTOR.
2,412,594
Patented Bec. 17, 1946
UNITED STATES PATENT OFFICE.
2,412,594
JIG BUSHING
James E. Antonidis, Chicago, Ill., assignor to
Master Machine & Tool Company, Chicago, Ill.,
a corporation of Illinois
Application May 28, 1945, Serial No. 596,279
10 Claims.
1
This invention relates in general to a new bush
ing for drills, reamers, and the like, although
it may have a more general use wherever appli
cable.
An important object of the invention is to- pro
vide a removable handle for attachment close to
one end of a bushing by means of which the
bushing may be inserted and removed from oper
(Cl. 77-62)
2
in engagement by a removable snap spring re
movably seated near one end of the bushing.
Referring now more particularly to the draw
ing, a bushing S is designed and intended to
receive drills, reamers, and other mechanical de
vices for accurately positioning them with respect
to a support or the work for which it is intended.
As represented in Fig. 2, a work support 'I has
a sleeve 8 in which the jig bushing is inserted.
ative position.
Near one end of the bushing is an outwardly
A further object of the invention is to provide 10
projecting shoulder 9 which limits the insertion
an improved handle of relatively light material
of the bushing into the sleeve 8 with a notch
having a strengthened offset for displacing the
iii extending through the projecting portion of
hand hold portion from the plane of the work
the shoulder. Beyond the shoulder the bushing
so that it may be easily engaged.
A further object of the invention is to provide 15 is formed with a neck Il around which may be
fitted the apertured end l2 of a handle i3 adapted
a light-weight handle which is easily locked in
to rest against the shoulder thereof.
place against relative rotation with respect to
Around the bushing neck is formed a groove I4
the bushing.
adapted to receive a split locking spring l5 which
Still a further object is to provide a bushing
of this kind with a notched edge for attaching 20 is snapped in place over the end of the bush
ing. The thickness of the spring ring may be
it in a fixed work position and for easily dis
slightly less than the arcuate width of the groove
engaging it therefrom when desired.
I 4 whereby it is free to lie slightly to one side
Still a further object of the invention is to
thereof and bear- downwardly upon the upper face
provide a bushing having a locking spring with
an easily engageable extremity for removing it, 25 of the apertured end or perforated portion l2
of the handle to hold the latter tightly in posi
and the spring being so proportioned that it tends
tion against the shoulder 9.
to seat the handle tightly against the bushing.
The handle which is preferably made of metal,
Other objects of the invention will appear in
is formed with a lip i6 turned downwardly from
the specification and will be apparent from the
the apertured end to engage in the notch I0
accompanying drawing in which,
of the bushing shoulder, thereby providing an
Fig. 1 is a top plan view of a jig bushing in
interengaging lock for holding the handle and
accordance with this invention;
the bushing against relative rotation. The handle
Fig. 2 is a sectional view showing the bush
is preferably formed with an offset connecting
' ing and its connection with the handle;
the outer hand hold portion i1 and its apertured
Fig. 3 is a fragmentary detail in section, show
ing the bushing neck, handle end, and locking
ring therefor; and
end I2, the offset portion comprising opposite
angular bends I3 and I9 in the angular por
tions of which are indentations 2Q to form the
Fig. 4 is an end View showing the bushing
opposite strengthening ribs 2 I. In the outer hand
in elevation as applied to a support.
hold portion, a small perforation 22 may also
40
In operatively placing and removing a bush
be provided for hanging the bushing upon a suit
ing of this kind, it is desirable to have a handle
removably attached near the upper end and en
gaged with the bushing to prevent relative rota~
tion. The handle should be light and strong and
able support.
At one end of the snap ring is a hook or pro
jection 23 which extends outwardly from the end
of the bushing to provide means for receiving
it should extend outwardly away from the Work
engagement from a» tool to facilitate removal
so that the bushing may be easily applied or
of the ring from the bushing when it is desired
removed, and provision should also be made for
to disengage the handle therefrom.
engaging the bushing or the handle to hold the
In order to tightly hold the bushing in any
bushing ñrmly in any fixed position, and also to 50 ñxed position, a lock screw 24 may be provided
having a lower threaded portion 25 adapted to
permit a quick disengagement of the bushing
be inserted in a threaded hole in the support out
if it is desired to remove it from the work.
side of the sleeve 8, the screw being formed with
In the present invention, the above objects are
an unthreaded portion 26 adjacent an enlarged
attained by providing a novel form of handle
which interlocks with the bushing and is held 55 head 2l so that the head will engage over the
2,412,594
3
4
edge of the apertured end I2 of the handle.
By threading the screw inwardly, it will hold the
bushing tightly in place. In order to make the
bushing easily removable from the work support
without entirely removing the holding screw 24,
the edge of the apertured end l2 of the handle
lock the handle and bushing together against rel
ative rotation.
is provided with a curved notch 28 through
which the enlarged head 27 of the screw' is free
6. A jig bushing having an outer shoulder ad
jacent one end forming a work positioning sup
port, an offset handle therefor having a perfo
rated portion to engage over the end against the
outer side of the shoulder and a hand hold por
tion connected to the perforated portion by an~
gular bends having indented edges forming oppo
to pass after thebushing and its handle have
been rotated to the point where the one is in 10 site strengthening ribs, and means for securing
register with the other.
the perforated portion of the handle against the
With this construction, the bushing may be
easily raised, lowered, rotated, engaged, or dis
gaged with respect to the handle, and held in
place by locking means which engages the han
dle. The handle itself is both light and strong,
shoulder.
7. The combination with a jig bushing and a
support to which it is applied, of a shoulder near
the end of the vbushing to limit its insertion into
said support, and a handle having a perforated
portion inserted over the end of the bushing
against the outer side of the shoulder, an outer
and it is olTset with respect to its attachment to
the bushing so that the bushing may be readily
hand hold portion oiîset from the perforated por
applied, removed and operated without the hand
of an operator or the handle itself being any 20 tion to space it from the support, means to rein
force the handle portions in the offset, yielding
obstruction to the bushing.
means for holding the handle on the end of bush
While a preferred construction is thus particu
ing against the shoulder, and interengaging
larly described, various changes in the structure,
combination and arrangement of parts may be
means on the shoudler and handle to prevent their
made without departing from the spirit and scope 25 relative rotation.
8. The combination with a jig bushing and a
of the invention.
support to which it is applied, of a shoulder near
I claim:
the end of the bushing to limit its insertion into
l. A jig bushing in combination with a handle
and means for resiliently securing the bushing to
said support, and a handle having a perforated
the handle, said means comprising an outer 30 portion inserted over the end of the bushing
shoulder near the top of the bushing, the handle
against the outer side of the shoulder, an outer
having an opening for seating it against the
hand hold portion oiïset from the perforated por
shoulder, the bushing having a groove of arcu
ate cross section adjacent the top and above the
handle when seated against the shoulder, and a
spring ring having a thickness less than the
arcuate width of the groove seated therein and
bearing against the top of the handle.
2. The combination with a jig bushing having
tion to space it from the support, means to rein
force the handle portions in the olïset, yielding
means for holding the handle on the end of bush
ing against the shoulder, and means to lock the
bushing in the support comprising a headed lock
screw insertable in the support with its head to
engage over the outer edge of the handle portion,
40 and the outer edge of the handle portion having
a rounded notch through which the head of the
screw will pass when it registers with the notch.
against the shoulder, and a spring holding ring
9. A bushing having an outer shoulder near
engageable in the groove, the ring having a thick
one end, an olîset handle having a perforated
_ness less than the width of the groove to press 45 portion to fit over the end against the shoulder,
an outer shoulder adjacent one end and a round
ed groove nearer the end, of a handle having an
opening to iit over the end of the bushing and
yieldingly against the top of the handle,
means for locking the handle against rotation
with respect to the bushing, resilient means for
shoulder adjacent one end and a rounded groove
retaining the handle in locking position, and the
between the shoulder and the end of the bush
outer edge of the perforated portion having a
ing, a handle having a portion with an opening 50 notch through which the head of a work locking
3. In combination, a bushing having an outer
to ñt over the end of the bushing and against the
screw will pass when the bushing and handle are
shoulder` and a split spring holding ring seated
rotated to register therewith.
in the groove to engage the said handle portion
and having o-ne end of the ring projecting from
the bushing for engagement of a tool therewith.
4, The combination with a bushing having an
outer shoulder adjacent one end with an outer
10. The combination wth a jig bushing and a
support to which it is applied, of a shoulder near
the end of the bushing to limit its insertion into
said support, and a handle having a perforated
portion inserted over the end of the bushing
groove nearer the end and a slot through the
against the outer side of the shoulder, an outer
shoulder, of a handle therefor having an open
hand hold portion offset from the perforated por
ing to fit over the end of the bushing against the 60 tion to space it from the support, means to rein
shoulder and a lip engaging in the shoulder slot,
force the handle portions in the offset, yield
and a spring ring seated in the groove and en
ing means for holding the handle on the end of
gaging the outer face of the handle adjacent the
bushing against the shoulder, a headed locking
opening.
screw inserted in the support at the side of the
5. A jig bushing having an outer shoulder ad
bushing to engage over the edge of the perforated
jacent one end, a handle having a perforated
handle portion for holding the bushing in place,
portion to fit over the end of the bushing against
and the handle portion having a notch in its outer
the shoulder and a hand hold portion offset from
edge through which the head of the screw will pass
the perforated portion, means at the outer end of
when they are rotated by the handle to register
the bushing to resiliently engage the perforated 70 with each other to remove the bushing without
portion of the handle, and engaging means to
removing the screw.
JAMES E. ANTONIDIS.
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