Window-Sash Lock Page: 3 of 4
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1,271,772
In operation, when the member D is in
the position shown in Figs. 1 and 2 of the
drawings, the sash will be locked. If any
attempt is made to raise the lower sash or
5 lower the upper sash, the inner end of the
projection D2 will come in contact with the
lower end of the spring. If it is desired to
raise the sash part way, the member D
is swung to the right, so that when the lower
jg sash is raised the end of the projection D2
will pass up through the right way M a.
distance limited by the partition J at the
upper end .of the way M.. As the lower
sash is raised the end of the projection D2
15 coming against the flange K will cause the
member D to swing toward the vertical por-
tion so that on the closing of the lower sash
the inner end D2 of the member D will come
in contact with the right hand guide mem-
20 ber S, and as the lower sash approaches its
closed position said member D will return
to a locked position, as shown in Fig. 2 of
the drawings. Should it be desired to raise
the. lower sash its limit the member D is
25 swung to the left, so that when the lower
sash is raised the projection D2 will enter
the left way N. When the lower sash is
closed, assuming that it has been raised to
its upper limit, the projection D2 coming in
30 contact with the curved flange I or the in-
clined portion 0 of the middle flange, will
cause said member D to approach a vertical
position, and as the lower sash approaches
its closed position, the portion D2 coming
35 in contact with the left inclined guide way
S will cause the member D to assume the
position shown in Fig. 2 and after the sash
closes it will be automatically locked. . Any
attempt to raise the lower sash will be pre-
40 vented by the portion D2 coming in contact
with the spring. It will be noted that the
member D should be held with sufficient
friction at its lower end where it is pivoted
to the frame of the sash, so that there will
45 be no possibility of the member accidentally
swinging to the right or left by jar or some
other causes, which would throw said mem-
ber D in such a position that the sash might
be raised.
so What I claim to be new is:
1. An automatic -window sash lock com-
prising in combination with the upper and
lower sash of a window, a swinging member
mounted upon one sash and a plate upon
15 the other, a central partition - forming a
right and a left way, a spring fastened at
one end to the plate and cooperating with
said member to hold the sash locked, and
means for automatically moving said mem-
60 ber so that it will assume a locked relation
with the spring when the sash are closed.
2. An automatic window sash lock com-
prising in combination with the upper and
lower sash of a window, a swinging member
c5 mountedd upon one sash and a plate uponthe other, a central partition forming i
right and a left way, a spring fastened at
one end to the plate and cooperating with
said member to hold the sash locked, said
plate having marginal curved flanges de- 70
signed to cause said member to swing to-
ward a vertical position when the sash is
raised, and means projecting from the plate
to swing the member to a vertical position
as the sash is closed. 75
3. An automatic window sash lock com-
prising in combination with the upper and
lower sash of a window, a swinging member
mounted upon one sash and a plate upon
the other, a central partition forming a 80
right and a left way, a spring fastened at
one end to the plate and cooperating with
said member to hold the sash locked, said
plate having marginal curved flanges de-
signed to cause said member to swing to- 85
ward a vertical position when the sash is
raised, oppositely disposed inclined guide
members projecting from said plate and ex-
tending over a portion of said spring and
serving to throw the member to a vertical 9o
position as the sash is closed.
4. An automatic window sash lock com-
prising in combination with the upper and
lower sash of a window, a swinging member
pivoted to the lower sash, and having a 95
laterally extending portion projecting over
the top of the lower sash and beyond the
inner face of the latter, a plate secured to
the face of the upper sash, said plate having
side flanges upon the marginal edges there- 100
of, and a central partition forming a right
and a left way, a spring fastened at its up-
per end to said plate and its lower end free
and positioned over the inner end of the
laterally extending portion of said member 1o5
when the latter is in a vertical position, the.
marginal flanges of the plate serving to
cause said member to be tilted toward the
vertical position as the lower sash is raised,
and inclined guide members to further swing 110
the member to a vertical position as the
lower sash reaches its closed position.
5. An automatic window sash lock com-
prising in combination with the upper and
lower sash of a window, a swinging member 115
pivoted to the lower sash, and having a
laterally extending portion projecting over
the top of the lower sash and beyond the
inner face of the latter, a plate secured to
the face of the upper sash, said plate having 120
side flanges upon the marginal edges there-
of, a central partition projecting from the
plate and .forming a right and left. way, a
transverse partition at the upper end of one
of said ways against which the lateral pro- 125
jection of said member is adapted to contact
to limit the opening movement of the lower
sash, the marginal flange serving to swing
said member to a vertical position as the
lower sash is raised, and inclined guide 130
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Reference the current page of this Patent.
Rickel, Tremont W. Window-Sash Lock, patent, July 9, 1918; [Washington D.C.]. (https://texashistory.unt.edu/ark:/67531/metapth1258813/m1/3/?q=%22%22~1: accessed July 4, 2024), University of North Texas Libraries, The Portal to Texas History, https://texashistory.unt.edu.; crediting UNT Libraries Government Documents Department.