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Патент USA US2406132

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Aug. 20, 1946.
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A. J. CALAMAN
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TOOL
2,406,132 '
RETAINER
Filed June 14, 1945
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INVEINTOR
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ATTORNEY
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Patented Aug. 20, 1946
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2,406,132 _
UNITED STATES PATENT up ‘or-nee
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2,406,132
TOOL RETAINER‘
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Anthony J L ‘,CaJaman,,'O'svvego, N,v Y; 7
' ' ‘Application June i4, 1945; seen No.]:599,479¥
iclaiin} '(cl. 279-191) '
My invention relates to certain new and useful
improvements in tool retainers,’ and while pri
marily intended for use in connectionwith power
operated hamm'ersyit will be obvious that the
device may be employed for any other purposes
wherein it is found to, be applicable.
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' Important objects of the invention are to pro
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.2“,
of apertured, lateral lugs ‘I, which are. formed
integral'with-vth'e former and diametricallyop-iv
posed" relatively‘to' each other. The cylinder" ‘
studs 8 and 9 extend through‘ respective lugs‘!
and carry the absorber springs III, in the usual
manner.
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The present invention comprises a substan
tially L‘-'shaped holding arm II, consisting of a
vide'ra tool retainer of the character described,
vertically disposed portion I2, and a horizontally
which will prevent the escape of the tool from the
hammer during the operation of the latter or
disposed portion I3. The upper end of the arm‘
when the same is being handled or transported
portion .I2' is provided ,withl'a horizontally ex
when not in use, which is conveniently operable‘
tending connecting head I4, which is formed with
a threaded aperture I5 adapted for engagement
for securing and releasing the tool, which em
on the threaded projecting end of the stud 8 to
bodies relatively few parts, and which may be
readily installed in hammers already ocnstructed 15 attach saidl connecting‘ head I4 against the‘ un
. as well as form a component part of a new ham
mer structure.
der side of the associated lug ‘I, as clearly shown
in'Fig.1.'
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The horizontal ‘arm portion I3>is curved lon-T
gitudinally outward, and provided with a semi
a device of the class stated, which is simple in its
construction and arrangement, strong, durable 20 hexagon shaped notch I3’, which is disposed cen
and eflicient in its use, compact, positive in its ,
trally on the inner side thereof. The notch I3"
Further objects of the invention are to provide
action, attractive in appearance, and compara
tively inexpensive to manufacture.
With the foregoing and other objects in view,
is' adapted for engaging the'hexagon shaped tool’
6, andiconsequently is shaped to. conform to the
_ latter;
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which will appear as the description proceeds,
The tool s’ is provided with the/usual‘ a?n?la'r"
?ange I6, which is disposed at the point ‘of juncé
the invention consists of the novelv construction,
combination and arrangement of parts herein
ture with the tool shank 5. When the arm II is
speci?cally described and illustrated in the ac
in the holding position, the horizontal portion l3
companying drawing, but it is to be understood
thereof engages the tool 6 directly beneath the
that changes in the form, proportions and de 30 annular flange I6 in the notch I3’, thereby al
tails of construction may be resorted to that
lowing the ?ange IE to rest upon the said hori
zontal arm portion l3 and preventing the
come within the scope of the claim hereunto ap
pended.
escape or removal of the tool shank 5 from the
In the drawing wherein like numerals of rer
erence designate corresponding parts through
out the several views:
Figure 1 is a side view of my improved tool
retainer attached to a power operated hammer,
parts of the latter being in cross section and
broken away.
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Figure 2 is a top plan view of the device.
Figure 3 is an enlarged cross sectional view
on line 3-—-3, Figure 2.
Figure 4 is a side view of the latching member
and of the associated locking rod.
Referring in detail to the drawing I denotes
hammer socket 3.
The ‘attachment of the connecting head I4
with the stud 8, in the manner stated, provides
a pivotal connection for the holding arm II, and
permits the latter to be swung to the holding‘
position as stated, or to the releasing position,
40 as shown in dot and dash lines in Figure 2.
The free end of the horizontal arm portion
I3 is provided with a head I‘! formed with an
aperture l8. The head I1 is adapted to being
secured between a pair of spaced, horizontally
disposed jaws I9 and 20, which are formed in
tegral with the lower end of the connecting
a power hammer of the type now in common use
sleeve 2|. The latter is provided with a bore 22,
and operated by the use of air, steam, electricity
the upper portion of which is threaded, as at 23,
or gasoline, in a manner well known in the art
for connecting said sleeve 2| to the threaded
to which the invention appertains. The hammer 50 projecting end of the stud 9 against the under
I includes the usual cylinder 2, which is formed
side of the associated lug ‘I, as clearly shown in
Figure 1.
with a bore for the reception of the anvil 4, and
with a socket 3 for the reception of the shank
The jaws I9 and 20 are respectively prow‘ded
with apertures 24, which are aligned with the
5, of the tool 6.
The cylinder 2 is provided with the usual pair 55 sleeve bore22. The diameter of the. jaw aper
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‘tures 24 is less than the diameter of the sleeve
The latching member 26 is provided witha
" bore 22 to provide a shoulder 25 between the
pair of circumferentially extending grooves, in- ‘
dicated at 33 and 34, which are adapted for en-' ‘
upper jaw aperture 24 and the sleeve ‘bore 22,v for
the purpose to be described.
gagement by the projecting inner ‘end of the
locking rod 32. When the upper groove 33 is en
gaged by the locking rod 32, as shown in Figure
3, thelatching member 26 is locked in the latched
position.- When the latching member 26 is forced
,
Arcylindrical latching member 26 is mounted
and longitudinally slidable in the sleeve bore 22,
and normally extends in the latching position
through the apertures 24 in the jaws l9 and 26.
The upper end of the latching member 26 is pro
vided with any outwardly disposed annular ?ange
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to thereleased position, the locking rod 32 will
engage in the lower groove 34 and lock said latch
ing member 26 in the released‘ position.
21, which ‘is adapted for engaging the shoulder
‘25 for preventing the latching member 26 from
The
latching member 26 is released from either of
' ‘the locked positions by pulling the locking rod 32 '
passing entirely through the jaw apertures‘ 24.
The latching member 26 is provided with a
outwardly until the inner end thereof clears re
deep pocket 26' for'seating the lower- end of a 15 spectivegrooves 33 and 34.
spiral actuating spring 28. The upper end-of
The present invention provides a most em
the latter is seated in a pocket 28, formed inlthe , cient device vof'itszkind, which is ‘conveniently
adjusting plug 30. The latter is threadedly en
operable for holding or releasing the tool from
gaged in the threaded bore portion 23"and f'ad
the hammer, whereby tool changing and manipu
justable therein to'establish the desired tension 20 lations are greatly facilitated and expedited.‘
, to .the‘spring‘28.
The action of the springc28’
WhatIcIaimis:
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normally, forces the latching member 26 'down
wardly to the latching positionthrough the jaw,
In combination, a .tool retainer for a power
operated hammer comprising a holding arm hav
apertures 24, as shown in Figure 3.
ing one end thereof pivotally attached to the: ~
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?whenthe arm I I is in the holding position, the 25 hammer, a connectingsleeve secure to the ham-- _
ahead I‘! thereof is disposed between the jaws l9
mer, a pair of spaced jaws carried bysaid con- 7
and 2B‘, and the aperture 18 of said head I'Lis
necting sleeve for receiving the free end of ,said ‘
in exact registration with the jaw apertures 24,
holding arm, a spring actuated latching-member "
allowing the latching member 26 to extend
connecting with said sleeve and shiftable in the
7 through both jaw apertures 24 and through the 30 latter for securing and releasing said free end ‘of
head aperture l8, and thereby securing the arm
said holding arm, said latching memberrbeing
provided with a pair of circumferentially extend
llin the holding'position, as clearly illustrated
ing grooves disposed adjacent to‘ respective ends.
thereof, a spring controlled locking rod mounted
To release'the arm head I‘! from the jaws l9
and 20, the‘latching member 26 is forced up 35 in one of’ said pair of jaws and normally oper
wardly-into the sleeve bore 22, by means of any
able-for engaging in one of said pair of grooves
for holding said latching member in the secured
suitable implement, until the lower rounded end
position and in the other of said‘grooves for
3| of saidlatching member 726 clears thev arm
holding the latching member in the released posi
inFigu-re3.>?
head
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A spring‘controlled locking rod 32 is shiftably 40 tion,‘ and means mounted in said sleeve for adjusting the spring actuating said latching mem
mounted in the joined side of the upper jaw l9,
and has its inner end projecting into the upper
aperture 24,of the jaw I 9. "The locking rod '32‘
extends horizontally and is provided for locking;
the latching member 26 in the latched and re
leased
positions.
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ANTHONY J. CALAMAN.
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