Handle-Fastener Page: 4 of 5
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1,052,077
the finger nail may be engaged to raise the
spring and allow the bit to clear the spring.
In Fig. 6, the device is constructed as
above described but is provided with a
. means for readily raising the catch device
without the use of the finger nail. It will
be appreciated that with catches on opposite
sides of the appliance, when it is desired to
withdraw a bit it might be difficult to pull
10 outward on both catches and withdraw the
bit at the same time, the device requiring
to be supported also, in the meantime.
Therefore I have provided the ring 27, hav-
ing two slots 28 opening therethrough in
15 opposite sides each extending from the in-
ner surface of the ring to its outer surface
and the outer surface is made eccentric on
each side of the slots, providing a catch
lift surface 29 adjacent each slot. This sur-
20 face inclines outward from one end of each
slot, reaching the major diameter of the
ring at the opposite end, the inclination
being the same in direction for both slots.
The slot receives the outer end or extremity
25 26 of the spring therethrough, which is
turned sharply over the inclined lift surface
29; In this manner the ring is held in
place by the springs themselves.
It will be seen from the foregoing that a
30 device of great simplicity and cheapness is
provided, which yet is adapted to perform
its functions with a maximum of efficiency,
which will be durable, and which may be
made in very small size.
35 By rotation of the ring 27 in one direction
the catches are moved easily into disengaged
position, while reverse movement thereof re-
leases them and allows them to securely en-
gage and retain a bit when forced into the
40 stock. On this account quick change and
replacement of the bits may be accom-
plished.
It will be observed in Fig. 6 that the full
depth of the notches of the side of the bit
45 is located slightly forward of where the
spring catches bear against the sides of the
notches. Thus the springs do not fully
seat in the notches normally, but are en-
gaged against the inner inclined sides of
50 the notches, whereby force is exerted against
the bit tending to move it inwardly, and
maintaining it firmly in seated position at
the other end of the socket. In this way
the device automatically compensates for
5s wear on the sides of the socket and the bit,
and loose play of the bit is prevented. With
this form of bit and resilient means forcing
it inwardly, the liability of the tool to
wabble in the socket after long use is prac-
eo tically obviated. The operation of my de-
vice is essentially different from the ordi-
nary practice of providing a tapered butt,
fitting a correspondingly shaped socket, as
in such devices the socket and bit become
65 worn most at the extreme inner and outerengaging surfaces, and notwithstanding the
shape initially, after long use may develop a
wabble.
What is claimed is:
1. A tool holder comprising a stock ele- 70
ment having an axial socket, a bit member
slidably engaged therein and having op-
posed recessed portions adjacent the inner
end, longitudinally spaced pairs of aper-
tures being formed through the socket dis- 75
posed adjacent the recessed portion of the
bit when in engaged position, a spring ele-
ment having an end projecting outwardly
through the outermost of the said openings
the adjacent extremity of the spring being 80
turned inwardly from the end of the stock
and against its outer surface, the inner por-
tion of the spring being also extended in-
wardly from the end of the stock in close
engagement with the side of the socket and 85
being then inclined toward the axis of the
socket a distance, bent outwardly and pre-
sented through the innermost of the said
openings, and shaped for engagement to
release a tool. 90
2. A tool and holder comprising a stock
element having an axial socket a bit mem-
ber slidably engaged therein, and having
opposed recessed portions adjacent its inner
end, longitudinally spaced pairs of aper- 95
tures being formed through the sides of the
socket adjacent the recessed portions of the
bit when in engaged position, a spring ele-
ment having a bifurcated end projected
outwardly through the outermost opening loo
of each pair, the furcations being clenched
in opposite directions, the inner portion of
the spring extending inwardly a distance in
close engagement with the side of the socket
and being then inclined inwardly from the 105
opening last named to be engaged by a bit
when pressed into the socket, and being bent
outwardly to present an inner end through
the inner aperture thereadjacent, and its
extremity outwardly thereof bent laterally 110
for engagement to release a tool.
3. A device of the class described com-
prising a stock element having a socket, a
detachable bit member slidably engageable
in the socket, and having a recessed portion 115
adjacent its inner end, longitudinally spaced
pairs of apertures being formed through
opposite sides of the socket adjacent the re-
cessed portion of the bit, a spring element
having one end projected through the outer- 120
most aperture of each pair and clenched the
inner portion of the springs being inclined
inwardly a spaced distance for engagement
by the bit and being bent outwardly and
extended through the inner apertures, a 125
ring element having opposed slots therein
receiving the springs ends slidable there-
through, and having eccentric surfaces ad-
jacent the slots, the respective extremities
of the springs being bent laterally over the 3302:
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McMillan, Eugene C. Handle-Fastener, patent, February 4, 1913; [Washington D.C.]. (https://texashistory.unt.edu/ark:/67531/metapth513679/m1/4/: accessed July 1, 2024), University of North Texas Libraries, The Portal to Texas History, https://texashistory.unt.edu.; crediting UNT Libraries Government Documents Department.