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Патент USA US2123393

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Ãfúly 12, 1938.
J. F. wlNDspR
Filed Jan. 21, 1937 _
Patented July 12, 1938
« v’2,123,393
- Toor. HANDLE
John F. Windsor, Fairfield, Conn., assignor to The
Bridgeport Hardware Manufacturing lCorpora
tion, Bridgeport, Conn., a corporation of :Con
Application `,January 21, 19,37, Serial ëNo. 121,397
V1 Claim. (Cl. 279-96)
Thisinvention relates :toshandles for tools, such
for l‘example `as -screw drivers, nchisels and >'the
like, and has for an object to provideran improved
handle of simple construction `in which the »force
of :Iblows of ',-a .hammer -or rmallet aon the lend of
the ’handle :is ¿transferred directly -to the shank :of
the‘tool .by an fend member which 'is zof practically
indestructible material, ‘fand ‘because ithe force .of
the blows is transmitteddirectly to `the-shank -in-V
dependently of the main or body‘portion of the
handle, .this ‘latter ¿.portion may be made of a
different material which is less expensive and
which need not be of indestructible material or
material capable of withstanding the force of the
With the foregoing and other objects in view
I have devised a construction illustrated in the
accompanying drawing forming a part of the
specification, it however, being understood that I
20 am’not limited to the exact details of construc
tion shown but may use variations within the
scope of the invention.
In this drawing:
Fig. 1 is an elevation of a tool embodying my
Fig. 2 is a longitudinal section through the
handle showing the tool and shank in elevation;
Fig. 3 is a transverse section thereof substan
tially on the line 3-3 of Fig. 2;
Fig. 4 is an enlarged sectional View of the4 upper
end of the handle with the upper end of the
shank shown in elevation; and
, Fig. 5 is a section through the members of the
handle in separated relation before being assem
35 bled, the shank of the tool being shown in eleva
The tool illustrated is a screw driver, but this
is used merely for the purposes of illustration as
it will be understood the tool may be a chisel, or
40 any other tool for which such a handle is adapted.
The tool shown comprises a screw driver bit IIJ
withstand the blows of a hammer orxmalletaon ¥
the end of -the handle. The 'lower end of> this
body is ordinarily reduced as :shown .at :I3 »and
enclosed in :achollow ferr-.ule t4 which may .bese
cured to the `shank `by a atransverse :pin or rivet
I5, lthus holding the body .member `ft2 in :proper
position on the shank.
Secured to ‘the `upper «end of the shank of íthe
member I2 is. an .enlarged abutment Vor îfhead
member i6, preferably of ablock ofsmetal, which .I
is` drlilled at I 1 >to freceive ¿the end fîlrß Lof itheishank.
At the inner end of the drilled opening I'I there
is preferably `a portion I9 of smaller diameter,
and before applying this head to the shank the
end of the shank may be tapered somewhat as 15
shown at 20. The side walls of the shank are also
preferably scored or slightly grooved as shown
at 2|. When applying this block or abutment
member to the shank the shank is of relatively
tight fit in the opening I'I, and by driving the 20
block down onto the head of the shank the re
duced portion I9 and the end of the shank are
deformed and sort of flow or run together so that ‘
the block I6 is in effect in one piece with the
shank with no danger of working loose. The 25
metal of the block more or less runs into the
scoring 2| in the shank and helps to secure the
two together, and it also helps prevent relative
turning between them,
The drawing in Fig. 4 shows the end of the 30
shank deformed into the reduced portion I9, but
this is merely for illustration only as it appears
that the metal of both the head member and
the shank is deformed, ‘because the metal as in
dicated above appears to run together. In the
present showing the upper end of the body I2 is
recessed at 22 to receive the lower end of the
head members I6, but this is not necessary, it
being used in the present case to permit the use
of a longer member I6 with a shallower recess in 40,
the cap or end member 23.
This member 23, as will be evident because
having a. shank I I which is extended through the
body portion I2 of -the handle. As shown the of its location, must receive directly the force of
upper end of this shank projects a short distance a hammer or mallet blow on the end of the han
I die. It must therefore be of some material which
45 above the upper end of the body I2, but this may
be varied so long as the construction is such that is resistant to breaking or deformation under
the force of blows on the end of the completed these blows to a high degree. I have found a ma
handle are transmitted directly to the shank. terial which is known on the market as “Pyralin”
This body I2 may be of any suitable material, to be very satisfactory. This is a cellulose nitrate
preferably of some material which is of relatively material which I have found to be very well
low cost, such for example as wood or vulcanized adapted for this purpose as it is practically inde
hard rubber or rubber composition, to reduce the structible, may be easily applied, and is a good
electrical insulator so that if the body portion I2
cost of the handle. These materials are satis
factory for this body member because, as will of the handle is also of insulating material the
whole handle is insulated. This cap 23 is formed 55
55 later be shown, this member is not required to
2 ,
with a recess 24 to receive the abutment or head
being applied to the shank in a similar manner
member I6. This material has the property of
softening somewhat when at the proper tempera
to transmit the force of the blows directly thereto,
and also if this material has the characteristics
of resisting or withstanding these blows without
breaking or deforming to an objectionable extent.
ture, and if the recess 24 is somewhat smaller
than the diameter of the block I6 the cap may be
easily forced onto this block or head when this
material is in the heated condition. The outer
It is probable there are synthetic resins or other
similar materials which can be used for this pur
Walls of the head I6 are also preferably grooved
or scored or otherwise roughened as indicated at
10 25 so that when the head is forced into this
softened material is flows into these recesses and
after hardening the cap is rigidly secured to the
head with no danger of its loosening or turning
in operation.
The cap 23 is preferably of an outside diameter
substantially equal to that of the body I2 and its
lower end is in substantial engagement with the
top end of the body to give a smooth handle of
attractive appearance. It will, however, be seen
20 that the cap 23 is secured to the shank I I entirely
independently of the body member I2. It will
also be seen that the force of any blow on the top
or outer end of the cap 23 is transmitted directly
tothe head I6 and by it to the shank II inde
25 pendently of the body member I2, and therefore
this body member is not required to take any of
Having thus set forth the nature of my inven
tion, what I claim is:
A tool of the character described comprising a
handle including' a non-metallic body member, a
tool member having a metal shank extending
longitudinally through the body member, a sepa
rate enlarged metallic head member having ser
rations on its outer peripheral surface, said head
being rigidly secured by a forced fit to the end of
the shank at the outer end of the body member,
and a cap member of substantially the diameter
of the body member at its outer end, said cap 20
member being of a molded material diiferent from
those of the body and head members and such
as to be highly resistant to breaking and de
formation under blows of a hammer or mallet,
and said cap having a recess to receive saidy ser
the force of these blows. I am of course not lim
ited to the use of cellulose nitrate or the particu
rated head member and to which it is rigidly con
nected by forced fit so that the force of the blows
on the cap is received by the head member and
lar cellulose nitrate mentioned, but it will be evi
transferred by it to the shank.
30 dent I may use any other similar material which
has similar characteristics so as to be capable of
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