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10¢ 22, 1946-
J. SCHUNK I
2,409,709
‘BUS 0R CAR WINDOW CONSTRUCTION
Filed June '9, 1944
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I 1_ ILLLJ. __.__ __________ _
2 Sheets-Sheet 1
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.lNVETOR
I] I3 .SEFH 5 ELI-{LINK
BY
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@JKTTORNEY
Oct. 22, 1946.
2,409,709
J. SCHUNK
ans OR CAR’WINDOW CONSTRUCTION
Filed June 9, 1944
2 Sheets-Sheet 2
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‘. dgys .fvkx
EgORV
W ATTORNEY
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Patented Oct. 22, 1946'
2,409,709
UNITED STATES _ luirsrxrv I OFFICE
BUS OR CAR WINDOW CONSTRUCTION
Joseph Schunk, Union, N. J ., assignor to The
National Lock Washer Company, Newark, N. J .,
a corporation of New Jersey
Application June 9, 1944, Serial No. 539,533
6 Claims. (01. 189-73)
1
2
.
The present invention relates to improvements“ :6 'loc-k released ‘before the window sash reaches its
in bus or car window construction, and more par
lower position. In addition to relieving the rack
ticularly to the vertical sash guide post piece " strip of the strain of the Weight or impact of
within which the window sash is s'lidably sup
ported at each of its vertical side edges. Cer
tain window constructions of‘this type, ‘such as
disclosed for instance in my patent for Buslor
car window construction, No. 2,299,954, dated
the sash, the transfer of such weight or impact
to the supporting spring assembly prevents the
rack strip from digging into the sill of the win
dow opening, thus preventing distortion of the
rack strip and injury to the sill.
January 14, 1942, include within the channel post
a vertical rack member pressed into engagement
with the vertical edge of the sash by means of
101
With the above and other objects in view, an
embodiment of the invention is shown in the
accompanying drawings, and this embodiment
bowed leaf springs mounted in the base of the
will be hereinafter more fully described with ref
channel? and the present invention pertains es—
erence thereto, and .the invention will be ?nally
pecially to a novel form of rack strip, and to its
pointed outin the claims.
_ '
cooperating combination relation with the sash 15 .In the drawings
guide and the spring means carried thereby.
Fig. 1 isa fragmentary elevation of the inner
It is an object of theinvention to provide an
side of awindow construction, according to an
improved rack strip and cooperating structure,
exemplary illustrated embodiment of the inven
which makes it possible to construct a relatively
tion, ,
light-weight window ‘having insulation and op 20 Fig. 2 is a vertical sectional view,.taken along
erating features as good as, if not better than,
the line 2—2 of Fig. 1, the window sash being
other window constructions not as light in weight.
partially broken away in order to show the rack
It is particularly proposed to provide a rack strip
strip in elevation.
.
of relatively thin gauge material, and having an
Fig. 3 is a vertical sectional view similar to
angular cross sectional shape adapted to impart 25 Fig. 2, wherein the window sash, the rack strip,
substantial rigidity thereto.
and the removable outer leg or stop of ‘the sash
It is further proposed to provide a rack strip
guide post piece are removed.
having a ?ange at .one side adapted to be‘ inter
Fig. 4 is a front elevation of the rack strip.
lockingly con?ned in the side leg of the sash
Fig. 5 is a‘front. elevation of the ‘removable
guide post piece, and whereby the rack strip is‘
side leg or stopofthe' post piece.
.
'
retained in assembled‘relation with the post piece
independently of the‘window sash, to the end
that the ‘rack strip will remain in place and in
substantially parallel relation with the channel
‘Fig.6 is a‘horizontal sectional view, on an en
larged scale. taken along the line 6-6 of Fig. ,1.
Fig. 7 is a horizontal sectional view, also on.
an enlarged scale, taken along‘the line 'l—-'! of
post when the Window sash is raised or removed.
Fig. 1.
‘
>
The rack strip is thus prevented from kicking 35 Fig. 8 is .aifragmentary front elevation of the
out at the bottom into the window opening when
lower portion of the rack strip. ,
the sash is raised.
‘
' I
Fig. 91s a side elevation thereof.
.It is a further object to provide a rack strip
Fig. 10 is a "horizontal sectional View, on an
wherein the rack teeth are located on the back 40 enlarged scale, taken along the line .|D—I.£l of
side of the rack strip, thus ‘making it possible
Fig. 9.
I
,
to ‘provide a more compact sash guide post piece
Fig. 11 is a horizontal sectional view showing
assembly, wherein the height of the side legs of
a‘modi?ed form of sash guide, formed of sheet
the post‘piece may be substantially reduced.
metal.
’
A further object is to provide a rack strip hav 45 Fig. 12 is a horizontal sectional view of a mod
ing stop means for positively positioning it against
i?ed form of rack strip having means for giving
relative vertical‘ displacement with respect to
it additional rigidity.
the pressure ‘springs, and further to provide such
Similar reference characters indicate corre
stop means adapted to transfer the weight of the
sponding parts throughout the several ?gures of
window ‘sash when the sash bolt is resting on one 50 the drawings.
‘
.
.
of ‘the rack teeth to the pressure spring assem
Referring to the drawings, the window sash
bly supporting the rack strip. The stop means
part of the bus or car window structure comprises
is also adapted to transfer to the pressure spring
the usual top rail all], bottom rail H, and a pair
assembly the impact of the‘sash lock bolt when
, of side straps “connecting ‘the top and'bottom
the window'sash ‘isslammed down, with the sash 65 rails at each side,‘ the'glass panel Ill being seat
2,409,709
3
4.
ed at its edges in the top and bottom rails and
the side straps. Only one of the side straps and
the cooperating sash guide post piece assembly
is shown. The side strap is of U-shape channel
form in cross-section to receive the vertical edge C1
trated embodiment the intermediate spring is of
edges for seating engagement with the post 20,
beneath which there is engaged in overlapping
full size, consisting of the usual double bow ends '
adapted for yielding engagement with the rack
strip, as will presently more fully appear, while
the lower spring has its upper bow end cut oil
for the purpose of providing clearance for one
of the glass, and is enclosed by a U-shaped cross
of the bolt receiving notches of the rack strip,
section facing strip i5 secured thereto by ce
this arrangement being incidental to the par
menting orthe like, so that it forms a ?xed part
ticular window structure illustrated. It is point
of the movable window sash adapted to be raised
and lowered with it. The bottom rail H is pro 10 ed out that in a window structure of different
proportions the bolt receiving notches of the rack
vided at each end with a horizontally movable
strip may not interfere with the position of the
latch bolt it, normally projected by spring pres~
spring, in which case the usual full spring may
sure, and adapted to be retracted through opera
be employed.
tion of the latch lever ll, its nose end projecting
The top spring assembly is utilized for the pur
through a slot [8 in the facing strip [5 for en
pose cf securing to the upper end portion of the
gagement with the rack strip, as will presently
?xed stop projecting above the normally closed
more fully appear. The window opening com
window sash an outside stop member constitut
prises the usual sill l9 and side posts 29, and a
ing a ?xed extension above the removable outside
transverse top plate 2| provided upon the inner
stop. This extension stop comprises a base plate
side of its lower marginal portion with a weather
portion 43 engaged upon the base 24 of the ?xed
sealing strip 22 frictionally engaged with the up
stop beneath the spacer washer 39 of the upper
per sash rail ID in the closed position of the
spring assembly, and provided with an aperture
window sash.
44 for receiving the stud 38. At the outer edge
To each of the side posts 28, only one of which
is shown, there is secured the sash guide post 23 of the base plate there is provided a ?ange 45
having at its foot or base edge a projecting rib
piece assembly. This comprises a ?xed inside
45 seated in the groove 32 of the ?xed stop, this
stop member of generally L-shape in cross-sec
?ange constituting the outer leg of the sash guide
tion comprising a ?ange 23 constituting one leg
channel at its upper portion. At the lower end
of the sash guide channel, and a base 24 provided
of the ?ange 45 there is provided a downward
at its post engaging side with vertically extend
ly projectingv outwardly offset apron portion 41
ing foot ribs 25 and 26 at its inner and outer
relation the reduced thickness upper end'portion
48 of the removable stop member, this arrange
these ribs in which is inserted a weather-sealing
strip 28 of felt or the like. The ?xed stop is 357. ment providing a sealed connection between the
removable stop and the extension which at the
secured to the post by means of a series of screws
same time permits vertical sliding movement of
29 engaged through the base and screwed into
the removable stop to engage or disengage it. In
threaded bushings 30 secured in the post. The
assembling the removable stop member it is lat
rib 26 at the outer edge of the ?xed stop is adapt~
ed to removably receive the outer stop member 401 erally engaged with the groove 32 of the ?xed
stop member, being slid upwardly beneath the
SI of the sash guide channel, and for this pur
apron 41 so that the notches 3B of the locking
pose is provided with a vertically extending groove
?ange 35 may be engaged by the projecting por
32, for receiving the rearwardlyo?set longitudi
tions of the retaining lugs 4|. Thereupon it is
nal rib 33 provided at the foot or base edge of
the removable stop and With- a vertical recess 45 slid downwardly to engage the sill IS, the por
tions of the ?ange 35 above each of the notches
34, for receiving the locking ?ange 35 thereof,
36 being thus wedgingly engaged beneath the
this locking ?ange being provided at spaced
projecting portions of the retaining lugs, thus
points with cut out notches 36 for cooperation
effectually securing it. In the normal closed po
with retaining lugs provided upon the ?xed stop
sition, as illustrated in "Figs. 1 and 2, the remov
member at spaced points. These notches permit
' able stop is secured against vertical displacement
the removable stop to be engaged with the
by means of a set screw 49 provided in the re
grooved base of the ?xed stop by engaging the
movable stop in such relation that one side of
luges in the notches, whereupon the removable
the periphery of its head projects over its inner
stop is slidably moved vertically to bring the
?ange 35 into interlocking relation beneath the, 55 edge, where it is adapted to engage within a
‘notch 53 in the outer edge of the fixed stop
lugs, as will presently more fully appear.
through screwing the set screw inwardly to bring I
The retaining lugs for the removable stop con
the head into such engagement. .
stitute parts of certain of the spring assemblies,
The rack strip 5|, which constitutes the prin
namely, the intermediate and lower spring as
cipal feature of the invention, is assembled in the
semblies in the illustrated embodiment of the 60. sash
guide assembly between the springs 31 and
invention. This spring assembly comprises‘ a
the felt facing strip l5 of the window sash, the
bowed leaf spring 31, centrally apertured and
springs exerting lateral pressure upon the slid
engaged upon a headed stud 38, this stud also
able window sash through the rack strip and the
having engaged upon it beneath the spring a
sash
having inward lateral movement in the sash
spacer washer 39 and the retaining lug 40, the
guide through lateral pressure applied to the sash
assembly being secured by engaging the stud
to compress the springs. The rack strip has an
in an aperture 4| in the base or the stop and‘
angular cross-section to provide a projecting
riveting over the end of the stud, as at 42. The
?ange 52 at one edge, which is slidably engaged
retaining lug is in the form of a rectangular
centrally apertured plate projecting at one edge 70' with the inner side of the side leg 23 of the stop,
and is con?ned in a vertically extending groovev
over the locking ?ange receiving recess 34, the
and with a vertically extending recess 2'! between
projecting portion being slightly de?ected out
53 formed by an inwardly extending ?ange 54
provided at the edge of the side'leg 23, this ?ange ;
wardly and yieldable for the purpose of having
54 having bearing upon the side of the felt fac- ,
the ?ange 35 of the removable stop. slid into
wedging engagement beneath it. In the illus ,75 ing 15. This interlocking engagement of. the
2,409,709‘
6
flange 52 in the groove 53 prevents the rack strip‘,
The ?xed stop comprises a base Gland 'a side leg‘
63 bent at a right angle thereto, and‘ havin'gat
from kicking out from the bottom into the‘win
its outer edge a. rearwardly ‘bent :?ange R64 in.
dow opening when the window sash is raised.
wardly spaced therefrom to provide‘a groove '65,‘
At its other edge the rack stripis bent upon it
self to provide a reinforcing bead 55, this bead Q21. i this grooveadapted to slidably receive the ‘?ange
52 of the rack strip in substantially the same man
together with the right angular ‘cross-section of
her as it engages the groove 53 in the form of the
the strip imparting substantial rigidity to it.
invention shown in Figs. 1 to 10. At‘ its other side '
Hence, the strip may be constructed of relatively
A
thin gauge material.
'
the base 52 is bent forwardly at a right angle and .
Near the lower end of the strip there is pro 10‘ folded rearwardly upon itself toxprovide-a rib 66
upon which is engaged the removable stop. The
vided a rectangular opening 56 for receiving the
removable stop consists of an outer portion 61
projected sash lock bolt in the‘lowered position‘
engaged upon the outer ‘side of the rib 66 and
of the window‘ sash, andwhich prevents raising
an inner portion 58 bent rearwardly-therefrom in
of the window while the sash lock bolt is proj
ected. At suitably spaced points along the length 15 inwardly spaced relation to engage at the inner
side of. the rib 66, thisportion 68 being provided
of the strip there are provided rack teeth, each
at its inner edge with a locking ?ange ‘69 provided
consisting of a pocket member 51, bent to shape
with‘ notches ‘l0, and adapted to be interlockingly
from a strip‘ of metal and engaged in rectangular
engaged with the retaining lugs 40.
openings‘58 in the strip, its upper and lower end
In Fig. 12 a modi?ed form of rack strip is
portions 59-v-59 being secured to the inner side of, 20
shown, wherein the juncture between the strip
the strip by welding or other suitable means. The
5i and the ?ange 52 is formed by a rearwardly
position of the rack strip between the springs and
projecting bead formation ‘H, and wherein the
the window sash, and the disposition of the rack
edge of the reinforcing bead 55 is provided with
teeth pocket members between the springs makes
it possible to locate the rack teeth on the back 25 a rearwardly projecting rib formation ‘[2. In this
form of the rack strip the formations ‘II and ‘I2
or inner side of the strip, which (results in mak
constitute structural reinforcements which pro
ing it possible .to reduce the lateral dimension of
vide additional rigidity.
the side leg of the sash guide post piece, thus
I have illustrated and described a preferred and
making for a more compact structure and a larger
window opening with increased visibility.
30 satisfactory embodiment of the invention, but it
will be obvious that changes may be made-there
Upon the back of the rack strip, at suitable
in, within the spirit and scope thereof, as de?ned
locations to engage above one of the springs and
in the appended claims.
below another, there are provided right angular
Having thus described my invention, what I
shaped stop lugs ‘65 and 6!, secured by welding
or the like, and which are‘ adapted to hold the 35 claim and desire to secure by Letters Patent is:
1. In a window construction, a sash guide
rack strip in a working position between any two
channel including inner and outer leg portions
springs of the sash guide post piece. The lower
and a base portion, a rack strip member disposed
stop lug 6| prevents the rack- strip from raising
in said ‘guide channel outwardly of its‘ base por»
when. the window sash is raised, and the upper
tion, pressure spring means carried by said base
stop lug transfers the weight of the window sash
portion and exerting outward pressure on said
when the sash lock is resting on one of the rack
rack strip, and stop means carried by said rack
teeth to the spring assembly supporting the rack
strip disposed vertically above and directly en
strip. As the weight of the sash is not directly
gaged with the upper side of said spring means
transferred to the sill by the rack strip as a sup
whereby said spring means receives vertical thrust
port the rack strip is relieved of such weight and
on said rack strip. ’
i
will therefore not be distorted thereby. Also the
2. In a window construction, a sash guide chan
support of the upper stop lug 60 by the spring as
nel including inner and outer leg portions and a
sembly transfers the impact of the sash lock bolt
base portion, a rack strip member‘ disposed in
or bolts coming from the window sash when it is
being slammed down, with the sash locks released 50 said guide channel outwardly of its base portion,
pressure spring means carried by said base por
before the window sash nears its lowered position;
tion and exerting outward pressure on said rack
The transfer of the weight or impact to the sup
strip, and vertically spaced stop means carried by
porting spring assembly also prevents the lower
end of the rack strip from digging intothe sill
said rack strip respectively disposed vertically
of the window opening and hence eliminates dis 55 above and below and directly engaged with upper
and lower end portions of said spring means to
tortion of the rack strip as well as damage to the
retain said rack strip against vertical displace
'
ment.
5
The rack strip is positioned in the sash guide
post piece by placing the end of the ?ange 52 in
3. In a window construction, a sash guide chan
the opening of the groove 53, in the side leg 23 60 nel including a base portion, a ?xed leg portion,
and a removable leg portion normally laterally
of the ?xed stop, and then applying pressure
opposed to said ?xed leg portion, a rack strip
against the springs until the rack strip snaps into
member disposed in said guide channel outwardly
place. The ?ange 52 is of such length that when
engaged in the groove it will not become disen
of its base portion, pressure spring means disposed
gaged when the window sash is inserted in the 65 between said base portion and said rack strip
sill.
window opening. In order to remove the rack
strip, the sash is removed and thereupon the
member and exerting outward pressure on said
rack strip member, said rack strip member being
of right angular form in cross-section to provide
a sash engaging portion normally at a right angle
and given a twisting motion which may be con
veniently accomplished with a screwdriver or the 70 to said leg portions, a forwardly facing ?ange
portion at one edge disposed parallel and adjacent
like used as a pry.
to the inner side of said ?xed leg portion, and
In Fig. 11 the rack strip is shown assembled in
an open side laterally opposed to said ?ange por
an alternative form of sash guide post piece,
tion and disposed adjacent the removable leg
wherein the ?xed stop and the removable stop
are formed of sheet metal strips bent to shape.‘ 75 portion, removal of said removable leg portion
rack strip is pressed inwardly against the springs
2,409,709
8
adapted to expose said Open side of said rack strip
angle to said leg portions, a forwardly facing
memberforthe lateral engagement or disengage
ment of a sash therewith, said ?xed leg portion
having rearwardly facing retaining means op
posed to the forward edge of said ?ange portion
of saidrack strip member.
?ange portion at one edge disposed parallel and
adjacent to the inner side of said ?xed leg por
tion, and an open side laterally opposed to said
4. In a window construction, a sash guide chan
?ange portion and disposed adjacent the re
movable leg portion, removal of said removable
leg portion adapted to expose said open side of
said rack strip member for the lateral engage
ment or disengagement of a sash therewith, said
nel includingv a base portion, a ?xed leg portion,
and a removable leg portion normally laterally
opposed to said ?xed leg portion, a rack strip 10 ?xed leg portion having a rearwardly facing
member disposed in said guide channel outwardly
groove engaged by said ?ange portion of said
of its base portion, pressure spring means secured
rack strip member.
to said base portion for exerting outward pres
6. In a window construction, a sash guide chan
sure on said rack strip member, said rack strip
nel including a base portion, a ?xed leg portion,
member being of right angular form in cross
and a removable leg portion normally laterally
section to provide a sash engaging portion nor
opposed to said ?xed leg portion, a rack strip
mally at a right angle to said leg portions and
member disposed in said guide channel outwardly
engaged at its rearward side by said spring means,
of its base portion, pressure spring means dis
a forwardly facing ?ange portion at one edge
posed between said base portion and said rack
disposed parallel and adjacent to the inner side 20 strip member and exerting outward pressure on
of said ?xed ‘leg portion, and an open side later
said rack strip member, said rack strip member
ally opposed to said‘ ?ange portion and disposed
being of right angular form in cross-section to pro
adjacent the removable leg portion, removal of
vide a sash engaging portion normally at a right
said removable leg portion adapted to expose said
angle to said leg portions, a forwardly facing
open side of said rack strip member for the lateral 25 ?ange portion at one edge disposed parallel and
engagement or disengagement of a sash there
adjacent to the inner side of said ?xed leg por
with, said ?xed leg portion having rearwardly
tion, and an open side laterally opposed to said
facing retaining means opposed to the forward
?ange portion and disposed adjacent the remov
side of said flange portion of said strip member.
able leg portion, removal of said removable leg
5. In a ‘window construction, a sash guide 30 portion adapted to expose said open side of said
channel including a base portion, a ?xed leg por
rack strip member for the lateral engagement or
tion, and a removable leg portion normally later
disengagement of a sash therewith, said ?xed leg
ally opposed to said ?xed leg portion, a rack
portion having rearwardly facing retaining means
strip member disposed in said guide channel out
opposed to the forward side of said ?ange por
wardly of its base portion,.pressure spring means 35 tion of said rack strip member, said rack strip
disposed between said base portion and said rack
member having at its edge adjacent its open side
strip member and exerting outward pressure on
longitudinally extending stiffening means inte
said rack strip member, said rack strip member
grally formed therewith.
being of right angular form in cross-section to
JOSEPH SCI-IUNK.
provide a sash engaging portion normally at a right
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