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Патент USA US2411028

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Nov. l2, 1946.
2,41 1,028
Filed Nov. 17, 1943
,pdv 1:86' INVENTORS
_Elmer Smiìïz,
Patented Nov. 12,1946
Aaron Davies and Elmer Smith, Bakel', Orcg.;
Grace Davies administratrix of said Aaron
Davies, deceased
Application November 17, 1943, Serial No. 510,688
2 Claims.
Our invention relates to- crosscut saws, and
has among its o-bjects and advantages the pro
vision of an improved detachable handle embody
ing novel means whereby the handle may be
easily and quickly attached to or detached from
the saw, with the construction such that the
change may be made with mittened hands.
In the accompanying drawing:
Figure 1 is a face view of one end of a conven
tional crosscut saw illustrating the handle ap
plied thereto.
Figure 2 is an enlarged sectional View along
the line 2-2 of Figure l.
Figure 3 is a sectional detail View illustrating
the condition of the handle latch preparatory
to connection of the handle with the saw, and
Figure 4 is an enlarged sectional View of the
structure of Figure 2 but rotated ninety degrees.
(Cl. 145-111)
48, and a compression spring 'l0 is interposed be
tween the ball 64 and the plug 68. This body is
provided with air and moisture vents 12.
In operation, the spring ‘I0 normally holds the
latch pin 54 in the position of Figure 3 when
the handle is detached from the saw. At this
time, the pin 54 is restrained from outward move
' men-t beyond the position shown, with the ball
64 projecting partly across the slot 46.
10 ever, the tapered end 6B lies to one side of the
slot 46 so that the end of the saw blade Il) may
be inserted in the slot and pressed therein
against the tensioned ball. As the bal1 64 is
brought into the opening I2 in the Saw blade I0,
the latch pin 54 is correctly aligned with the
opening I2 so that the latch pin may be pressed
through the opening to the position of Figure 2.
The wing nurl 28 is then tightened which clamps
the handle bar Iii firmly between the bodies I8
In the embodiment of the invention selected
for illustration, the crosscut saw I0 is provided 20 and 20 and at the same time causes the member
with an opening I2 adjacent each end thereof.
32 to be clamped firmly against the end of the
This is conventional construction.
saw blade. In addition, the latch pin 54 is
The handle I4 comprises a handle bar I6 '
clamped firmly against the wall area 'of the
adapted to be clamped between two curved bod
opening I2 so as to be restrained from relative
ies I8 and 2B. Both bodies are provided with
movement, notwithstanding the tension of the
aligned openings 22 for the reception of a shaft
spring 153. Thus the latch pin 54 will be firmly
24 having threads 25 for coaction with a wing
secured in the position of Figure 2.
nut 23 lying against the body I8. The shaft nts
When the handle structure I4 is to be detached
’loosely in the openings 22 as well as in an open
from the saw blade I8, slight unloosening of the
ing 30 through the handle bar I6. This handl
wing nut 28 permits the spring 10 to project the
bar may comprise hard wood.
ball 64 and the latch pin 54 to the positions of
A saw engaging member 32 is provided with
Figure 3, at which time the saw blade may be
a groove 34 toI receive the end margin of the
easily withdrawn from the slot 46.
saw blade Iß. This member is provided with a
Without further elaboration, the foregoing will
centering projection 36 receivable in a recess or 35
so fully explain our invention, that others may,
socket 38 in the body 20, Lugs 40 are formed
on the member 32 for reception in a groove 42
by applying current knowledge, readily adapt the
same for use under various conditions of
in the body 20 to restrain the body from rotation
about the axis of the shaft 24.
We claim:
An opening 44 is provided in the member 32 40
1. In combination with a crosscut saw blade
for loosely receiving the shaft 24, and this shaft
is provided with a slot 46 in which the saw blade
I0 is loosely receivable.
having an opening adjacent one end thereof, a
handle structure comprising a shaft having a
slot to receive the end of the saw blade, a hand
To the end of the shaft 24 adjacent the saw
blade I0 are connected two laterally projecting 45 grip having an opening loosely receiving said
shaft, ñrst and second bodies bored to loosely
bodies 48 and 50. The body 50 is provided with
receive said shaft and positioned on opposite
a bore 52 for slida-bly receiving ailatoh pin 54
sides of said hand grip, said first body having
having a shoulder 56 engageable with the annu
means engaging the end of the saw blade, said «
lar flange 58 at the outer end of the body 5I), but
shaft having lateral extensions provided with a
the pin end 6i) of the latch pin 54 is freely slida 50 bore intersected by said slot, a latch pin slidably
ble in the ñange 58.
guided in said last mentioned bore at one end
A bore 62 is provided in the body 48 for guid- '
thereof to pass through the slot for insertion
ing a ball B4 engageable with the tapered end
through the opening in the saw blade, a spring
66 of the latch pin 54. A plug 68 is threaded
pressed ball located at the other end of the bore,
into the otherwise open outer end of the body bl' Ul said ball engaging one end of the latch pin to
normally position said end adjacent one side of
the slot with the ball projecting partly through
the slot to be engaged by the saw blade and fall
into the opening therein to align the latch pin
with said opening, said latch pin being projecta
ble through the opening against the tension of
said spring and being frictionally held to the
saw blade to resist retraction by said spring, by
a nut threadably connected with the shaft
adapted to engage said second bodâ1 to clamp 10
the hand grip between the ñrst and second bodies
and the saw blade between the ñrst body and
said latch pin, and means limiting the retracta
ble movement of the latch pin.
2. The invention described in claim 1 wherein
said engaging means comprises a grooved mem-,
ber interposed between said ñrst body and the
saw blade, and means on said ñrst member and
said grooved member cooperating to restrain the
two from relative rotation.
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