Патент USA US2570131

Oct. 2, 1951
J, H, JENSEN
27,570,128
LOCK FOR FRAMELESS WINDOW SCREEN TENSIONING DEVICES
Filed Sept. 29, 1950
2 Sheets-Sheet l
INVENTOR
.Ta ck .7£.Jens en
MM
ATTORNEYS
Oct. 2, 1951
2,570,128
J. H. JENSEN
LOCK FOR FRAMELESS WINDOW SCREEN TENSIONING DEVICES
Filed Sept. 29, 1950
2 Sheets-Sheet 2 “
2
//
19
man ”?
I.
fiIr/.!’ I.
INVENTOR
Jack JziJensen
BY
ATTORNEYS
Patented Oct. 2, 1951
2,570,128
UNITED STATES ‘PATENT [OFFICE
2,570,128
LooK FOR FRAMELES‘S‘ WINDOW SCREEN
‘TENSIONING DEVICES
Jack‘ H. Jensen,‘ San Leandro‘; Cali?, assignoi' to
Ry-Lock Company; Ltd., San Leandro, Calif., a
corporation of California
Application September 29, 1950, Serial Nil/187,531
1 Claim’. (01..
1
,
I
‘
Y 2
The present invention relates generally to a
"hold-down and tensioning device for a frameless
‘Window screen.
160--328-)
on and ?tted with screen tensioning devices‘v em
bodying the present invention.
‘ Fig. 2 is‘ a cross section ‘on line 2—‘—2 of: Fig. 1,
‘
A” major object of the invention is to provide
a framel'ess window screen tensioning device
showing‘ the related lock‘? in its upwardly extend
ing‘oi! non-locking‘ position.
’
Fig. 3 is a similar.‘ view, but‘ shows the lock. in
which embodies‘ a novel inside lock; 1. e. a lock
its downwardly extending or locked position.
adapted to be manipulated from inside the win
dow.
Referring now more particularly to the‘ char
acters of‘ reference on‘ the drawings, the numeral
_ Another important object of this invention is
to provide a frameless‘ window screen tension 10 I‘ indicates generally, a nameless window‘ screen;
"ing device lock which is‘ strong; effective to pre
the‘ screen being" mounted‘ in. connection with. a
Vent‘ opening of the screen from the outside;
‘ and convenient to‘ manipulate, from the inside,
window’ casaindioated generally at‘ 2', whichcase
between locking and non-locking positions.
Certain fr'ameless' window screen tensioning de
includes a header 3, a sill 4, and jambs 5.
At its upper end" the frameless'window screen‘
15 I' is attached‘ to a transverse top bar 6, which in
vices function by means of a member projecting
inwardly from the transverse bottom bar of the
screen in snap-engaged relation between a catch
turn. is secured to the header 3 by brackets ‘I'I.
At its lower‘ end,‘ which is adjacent'but short of
the sill 4. the“ screen I1 is attached to a transverse
‘ part‘ ?xed relative to the window frame; it thus
bottom bar‘ a‘ which includes a vertically adjust
being possible for the‘ screen to be opened from 20 able closure strip‘ 9‘, the latter assuring of com
the outside and- without authority. It is there
plete closure with‘ithe s‘ill‘ 4‘ after the1 screen I
fore the prime purpose of the present invention
is tensio‘ned.
'
‘
‘
to provide an inside manipulated lock whereby
The" frame‘le‘ss window‘screen I" is maintained
in taut‘, holdLdown relation by a pair of tension
“the snap-engaged parts cannot be separated.
A further object of the invention is to pro 25 ing devices, each indicated generally‘ at I0, and
‘disposed at: opposite ends of the transverse‘ bot
vide a lock, for the purpose, which is ‘especially
adapted-but not limited-for use with a frame
less window screen tensioning device which in
eludes a‘ horizontal U-shaped handle projecting
‘inward-1y from the bottom cross bar,. with one “
end leg of said handle notched on top for snap
engagement beneath a catch plate which pro
jects laterally from the window frame; the lock
being a locking tab pivotally mounted in connec
tion with such olatch plate for manual swinging
between an upwardly extending non-locking posi
tion clear of the handle, and a downwardly ex
tending locking position projecting into said
As‘ the ' tension'ing devices It, together with
the‘hereinafter‘desoribed lock incorporated there
in, are identical, except ‘for being right and ‘left
hand, a description of one will suf?ce‘ for both.
A horizontal elongated handle II of U-s'hap'e
is af?xed to the transverse bottom bar 8‘ and ex
tends inwardly therefrom, serving as the“ instru~
mentality whereby said transverse ‘bottom bar 8
may be pulled inwardly until it strikes the related
jambs 5.
A ?at, vertically adjustable bracket plate I2 is
a?ixed to the adjacent jamb 5 by vertically slot
handle.
Still another object of the invention is to pro» 40 ting said plate, as at I3, with a headed screw I4
extending through such slot into the: jamb.
vide a lock for frameless window screen tension
Additionally, the bracket plate I2 is‘ further
ing devices which is designed for ease and econo
my of manufacture.
stabilized, and adjusted, by means of a vertical
headed screw I5 which extends through a foot
Still a further object of the invention is to
provide a practical and reliable lock for frame
IE, on the lower end of said plate I2, into sill 4.
With this arrangement the bracket plate I2
less window screen tensioning devices, and yet
is effectively yet adjustably secured in connection
one which will be exceedingly eiiective for the
purpose for which it is designed.
These objects are accomplished by means of
such structure and relative arrangement of parts
as will fully appear by a perusal of the following
speci?cation and claims.
In the drawings:
Fig. 1 is a fragmentary inside elevation of a
Window having a frameless window screen there
. with the jamb 5.
The handle I I includes end legs I1, and the
one of such legs adjacent the jamb 5 is notched
on top, as at I8, whereby when the handle I I
is pulled inwardly to abut the screen 2 and the
transverse bottom bar 8 against the correspond
ing jamb 5, such one end leg rides under a lat
eral catch plate I9 which extends in integral
2,570,128
4
While this speci?cation sets forth in detail the
present and preferred construction of the device,
re‘ation from the bracket plate l2. The lower
edge of the catch plate I9 is formed with an
inturned lip 20 and such lipped lower edge snap
engages into the notch 18 when the handle is
pulled inwardly, as above. The bracket plate I2
still in practice such deviations from such detail
' may be resorted to as do not form a departure
from the spirit of the invention, as de?ned by
the appended claim.
is set in an adjusted position such that the screen
Having thus described the invention, the fol
I is tensioned when such snap-engagement of
the foregoing parts occurs.
While the above described device is effective
for tensioning the window screen I, nevertheless
it is possible—-in the absence of a lock—for the
transverse bottombar 8 to be pulled or pried
outwardly, disengaging the handle H from the
lowing is claimed as new and useful, and upon
which Letters Patent are desired:
A tensioning and locking device for a frameless
window screen having a transverse bottom bar
adapted to extend across a window case, and a
manipulating handle on the bottom bar compris
ing a leg rigid with and projecting horizontally
catch plate l9, thus permitting of unauthorized
opening of the screen.
15 inward from the bar, and ‘a member extending
lengthwise of the bar from the inner end of said
7
To avoid this eventuality. the tensioning device
is provided with the following look:
A ?at rotary base 2| is engaged ?ush against
the inner face of the catch plate 19, being turn
ably secured in connection therewith'by a headed 20
- rivet 22.
leg; said tensioningand locking device compris
ing a vertical plate secured on and extending
laterally from the window case to overhang said
handle leg, the latter having an angular notch
cut in its upper surface adjacent the bottom
In offset relation to the rivet 22 the rotary
base 2| is formed with an integral, vertically
elongated locking tab 23 which projects inward
bar, and the lower edge of the plate being formed
with an up-turned angular lip to engage in said
1y; i. e. in a direction away from the screen. ’
ing member comprising a base element disposed
?atly against and pivoted on the plate above the
lip, and an elongated ?nger tab projecting in
wardly from the base and terminating at one end
at one edge of the base, the tab being of a width
and positioned to ?t between the longitudinal
handle member and the lip when the latter is
engaged in the notch whereby if the base is
turned to dispose the tab down it will project
between said longitudinal handle member and
The elongation and disposition of the locking
tab 23 is such that when the base 2| is in one
rotary position, said tab extends upwardly clear
.of the handle H, but in another position the
tab extends downwardly, projecting through the
handle in bearing relation thereagainst; the point
of contact being indicated at 24. These positions
of the locking tab 23 are shown, in Fig. 1, in the
left hand and right hand devices, respectively.
With the described lock it requires only a sim- '
ple manipulation, from inside the window, to turn
the locking tab 23 from its upwardly extending,
non-locking position, to its downwardly extend
- ing locking position projecting through the han
dle I I in engagement therewith.
A portion of the locking tab 23 adjacent the
screen I is cut away, as at 25, to permit said
tab to clear the lipped lower edge of the catch
plate l9 when said tab is turned down to it
looking position.
i
‘
' The described lock, while designed for ease
and economy of manufacture, provides a very re
liable device for assuring unauthorized opening
of the screen by outward withdrawal of the trans
; verse bottom bar 8.
From the foregoing description it will be read
ily seen that there has been produced such a
look as will substantially ful?ll the objects of
the invention, as set forth herein.
notch when the screen is tensioned, and a lock
the vertical plate to prevent outward movement
of said member and the bottom bar of the screen;
and when the tab is turned up from said posi
tion it will clear the handle to allow of release
of the handle leg from the lip and outward move
ment of said handle and bottom bar.
-
JACK H. JENSEN.
REFERENCES CITED
The following references are of record in the
?le of this patent:
UNITED STATES PATENTS
Number
Name
Date
,
1,120,333
1,471,609
1,633,645
Pinkham _________ __ Dec. 8, 1914
Jorgensen _______ __ Oct. 23, 1923
Molberg ________ __ June 28, 1937
2,146,251
Dominick ________ __ Feb. '7, 1939