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Патент USA US2125152

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July 26, 1938-
2,125,152
E'. H. CARLSON
SASH CORD FASTENER
Original Filed Marsh 12, 1936
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Patented July 26, 1938
2,125,152
UNITED STATES
PATENT OFFECE
2,125,152
SASH CORD‘ FASTENER
Ernest H. Carlson, Chicago, Ill.
Application March 12, 1936, Serial No. 68,435
Renewed December 22, 1937
7 Claims. (Cl. 16-205)
This invention relates to sash cord fasteners, projects, and is preferably of less width than
and particularly to such devices used in conjunc
the diameter of the bore and of less width than
tion with vertically sliding windows or panels for the clamping block 3, so that the inwardly con
removably securing one end of a sash cord to
verging margins of the opening 5 will serve to
5 such windows or panels.
retain the block 3 within the member I.
The main objects of this invention are to pro
As shown in Figs. 2 and 5, the margins of the
vide an improved sash cord fastener of simpli?ed opening 5, at the upper end thereof, are arranged
construction and low manufacturing cost; to pro
to converge toward the open end of the member
vide an improved sash cord fastener that may be
I so as to form a V-shaped slot 6 in the side wall
10 readily detached for the purpose of removing or of the member I above the opening 5.
10
renewing the sash cord witout removing the win
As shown in Figs. 3 and 6 the clamping block 3
dow or panel from its guiding frame; and to is preferably wedge shaped in side elevation, that
provide an improved sash cord fastener having a is, one end is thicker than the other. The thick
simpli?ed arrangement for clamping a sash cord ness of the heavy end may be substantially one
15 thereto which permits easy and rapid removal half the diameter of the small or open end of the 15
of the sash cord when the same is necessary.
bore and the clamping block 3 is placed in the
A speci?c embodiment of this invention is body I with the thick or heavy end at the top or
shown in the accompanying drawing, wherein: toward the open end of the body. Also as shown
Fig. 1 is a fragmentary perspective view of the in Fig. 6 the heavy or upper end of the block 3 is
20 lower corner of a window having a sash cord and
fastener attached.
Fig. 2 is a view in elevation showing the inside
face of the fastener.
Fig. 3 is a sectional side elevation of the fas
25 tener.
Fig. 4 is a sectional view taken on line 4-4 of
Fig. 3, illustrating the manner in which the sash
cord is clamped to the fastener.
Fig. 5 is a perspective view showing the body
30 of the fastener.
I
Fig. 6 is a perspective view showing the clamp
ing block that is housed within the fastener body,
and
Fig. '7 is a view in elevation showing a modi?ed
35 arrangement for attaching a tape type of sash
cord to the fastener.
In the form shown in the drawing the improved
sash cord fastener comprises a one piece tubular
member or body I having a bore extending there
40 through and a laterally extending leg 2 closing
the bore at one end of the member and project
ing therefrom thebore being inwardly tapered
toward or adjacent the opposite end of the mem
ber. Housed within the tubular member or body
45 l is a slidable rectangular block 3 which is of less
thickness than the mean diameter of the said
bore and of greater width than the diameter of
the tapered end portion of the bore. Projecting
outwardly and backwardly from one face of the
50 block 3 are a plurality of pointed prongs 4.
As shown, the side wall of the tubular member
I, adjacent the closed end is provided with an
opening 5 formed by cutting away a portion of
the side wall. The opening 5 is located on the
55 side of the member I, from which the portion 2
preferably cut or hollowed out, as at ‘l on the 20
side from which the prongs 4 project so that,
with the block 3 in place within the body I, the
end of the sash cord 8 will readily pass over and
beyond the end of the block 3 instead of abutting
the end of the same and possibly making inser- 25
tion of the cord difficult.
The prongs 4, and particularly the uppermost
prong, are preferably of such length as to pro
ject into the V-shaped slot 6 to a point substan
tially flush with the outer surface of the body I. 30
Thus the upper prong will engage the end of the
slot 6 and limit movement of the block 3 toward
the open end of the fastener when other means
than the usual sash cord is being secured to the
fastener, as illustrated in Fig. 7.
35
Thus the end of the sash cord 8, having been
passed through the open end of the member I,
may be passed through the fastener body over
the end of the block 3 and pulled out through the
opening 5, the clamping block 3 meanwhile rest- 40
ing against the closed end of the member I. The
sash cord 8 is then pressed through the opening
5 against the pointed prongs 4 of the clamping
block 3 and the portion of the cord extending
through the open end of the member I is pulled 45
so as to draw the end of the sash cord and the
clamping block toward the open end of the bore.
During this action the thick end of the clamp
ing block 3 ?rst tends to grip the sash cord caus
ing the relatively free portion below to be 50
squeezed downwardly and swell, thus forming a
relatively loose bulge in the free portion which is
forced into the V-shaped slot 6 where the same
is gripped by a wedging action between the con
verging margins of the slot 6. The thinner lower 55
2,125,152
r:
2
end of the block 3 permits ample space for the
bulging of the cord below the point where it is
?rst gripped. Thus the cord is in one operation
thrice secured, being ?rst pinned on the back
wardly extending prongs 4 projecting from the
face of the clamping block 3, then clamped be
tween the thick end of the clamping block 3 and
the wall of the member I and ?nally wedged be
tween the converging margins of the slot 6.
As shown in Fig. 1 the sash 9 of the window or
10
i panel is usually provided with a longitudinal
groove it in which the sash cord 8 is housed, and
the fastener is seated in the groove it with the
laterally projecting portion or leg 2 extending
15 along the bottom edge of the sash, where it is
secured to the sash by means of a screw or nail
inserted in an opening 2.! provided adjacent the
free end of the portion 2.
With this arrangement the vertical load upon
20 the sash cord fastener is carried by the laterally
projecting portion 2 rather than by the screw or
' other means employed to secure the fastener to
the sash.
When it is desired to remove or renew the
25 sash. cord it is only necessary to raise the sash
upwardly, remove the screw or other fastening
means used to secure the fastener to the sash
and then pull the fastener downwardly below
the bottom edge of the sash. In this position the
30 sash cord may be removed by simply pushing
the same downwardly through the open end of
the fastener, which action forces the cord out
of the V-shaped groove 6 and causes the clamp
ing block 3 to move downwardly so that the
35 end of the sash cord may be pulled through the
opening 5 and disengaged from the prongs 1i of
the clamping block 3. The cord 8 is then pulled
out of the fastener and a new cord can be readily
applied, the end of the new cord being inserted
40 in the open end of the fastener and engaged
with the clamping biock as aforesaid.
In Fig. '7 the herein described sash cord fas
tener is shown applied to a tape type of sash
cord H, this type of cord usually being in the
45 form of a ?at flexible metal strip or tape having
a metal loop l2 secured to its end. With this
type of sash cord a double wire hook is employed
to connect the loop l2 with the. fastener, the
hook having two parallel legs l3 having inward
50 ly turned or hooked ends M which may be en
gaged with the upper one of the prongs ll of the
clamping block 3. This prong being of such
length as to engage in the slot 6, becomes wedged
therein and securely holds the hooked ends M of
55 the hook legs it so that the hook l2 can not
become inadvertently detached from the fas
tener.
The main advantages of the improved sash
cord fastener lie
its simple construction and‘
60 low cost of manufacture; and in its simple oper
ation, which permits rapid and easy attachment
and detachment of the sash cord. Also the
improved fastener may be eifectively employed
with a substantial range of sash cord sizes since
65 the clamping block will merely adjust itself lon
gitudinally in the fastener until the thick end
of the block in cooperation with the tapered bore
of the fastener, reaches a position where the
cord will be securely clamped. Other advantages
lie in the multiple clamping feature derived
from the novel arrangement of the clamping
block with its thick or heavy end positioned to
ward the open end of the fastener bore.
Although but one speci?c embodiment of this
75 invention is herein shown and described, it will
be understood that certain details of the con
struction shown may be altered or omitted with
out departing from the spirit of this invention as
de?ned by the following claims:
1. A device of the class described comprising a
tubular member having a bore tapered inwardly
toward one end and opening therethrough, a
wedging block slidably mounted in said tubular
member and having a greater width than the
small end portion of said bore, said block hav 10
ing‘ greater thickness at the end nearest said
small end portion of said bore than at its oppo
ite end, and a plurality of backwardly extend
ing pointed prongs projecting from one face of
said block.
'
'
15
2. In a device of the class described, the com—
bination with a tubular member having a bore
tapered inwardly adjacent one end and opening
therethrough, said member having an opening
in its side wall intermediate its ends, and the
margins of said side wall opening converging to
ward said one end of said member, of a wedging
block slidably mounted in said tubular member
and having a greaterv width than the small end
portion of said bore, said block being of less 25
thickness than the smallest diameter of said bore
and having a ?at face, and a backwardly ex
tending pointed prong projecting from said ilat
face toward said side wall opening.
3. In a device of the class described, the com 30
bination with a tubular member having a bore
tapered inwardly adjacent one ‘end and opening
therethrough, said member having an opening in
its side wall intermediate its ends, and the mar~
gins of said side wall opening converging to— 35
ward said one end of said member, of a wedging
block slidably mounted in said tubular member
and having a greater width than the small end
portion of said bore, said block having greater
thickness at the end nearest said small end
portion of said bore than at its opposite end, and
the thickness of the large end of said block being
less than the smallest diameter of said bore.
a. In a device of the class described, the com
bination with a tubularv member having a bore 45.
tapered inwardly adjacent one end and opening
therethrough, said member having an opening
in its side wallintermediate its ends, and the
margins of said side wall opening converging to
ward said one end of said member, of a wedging .
block slidably mounted in said tubular member
and having a greater width than the small‘ end
portion of said bore, said block being of less
thickness than the smallest diameter of said
bore and having a ?at face, and a backwardly
extending pointed prong projecting from said
?at face toward said side wall opening, said
prong being of sumcient length to engage the
converging margins of said-side wall opening.
5. In a device of the class described, the com
bination with a tubular member having a bore
tapered inwardly adjacent one end and opening
therethrough, said member having an opening
in its side wall intermediate its ends, and the
margins of said side wall opening converging 65
toward said one end of said member, of a wedg
ing block slidably mounted in said tubular mem
ber and having a greater width than the small
end portions of said here, said block having
greater thickness at the end nearest said small 70
end portion of said bore than at its opposite end,
the thickness of the large end of said block
being less than the smallest diameter or" said
bore, and a backwardiy extended pointed prong
projecting from said block toward said side wall 75
2,125,152
opening, said prong being of su?icient length to
engage the converging margins of said side wall
opening.
6. A sash cord fastener comprising a tubular
body having a bore therethrough opening at one
end of said body and closed at the other end,
said bore being tapered inwardly adjacent the
open end of said body, said body having an
opening in its side wall, the margins of which
converge toward the open end of said body to
form a V-shaped slot intermediate said opening
and said open end, a slidable clamping block
housed within said body, said block being of less
thickness than said bore and of greater width
15 than the tapered portion of said bore, and a
backwardly extending pointed prong projecting
from the face of said block toward said side-wall
opening.
3
7. A sash cord fastener comprising a tubular
body having a bore therethrough opening at one
end of said body and closed at the other end,
said bore being tapered inwardly adjacent the
open end of said body, said body having an open
ing in its side wall, the margins of which con
verge toward the open end of said body to form
a V-shaped slot intermediate said opening and
said open end, a slidable clamping block housed
within said body, said block being of less thick 10
ness than said bore and of greater width than
the tapered portion of said bore, said block hav
ing greater thickness at the end nearest the open
end of said body than at its opposite end, and
a backwardly extending pointed prong project 15
ing from the face of said block toward said side
wall opening.
ERNEST H. CARLSON.
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