Door-Spring. Page: 3 of 4
This patent is part of the collection entitled: Texas Patents and was provided to The Portal to Texas History by the UNT Libraries Government Documents Department.
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684,742
tance the door is to travel, &c. _ To effectuate
this object, I provide a disk K, located un-
der the cylinder B and provided with a
ratchet K2, arranged to engage a suitable
5 spring-pawl. One form J of such spring-paw
is shown, and consists of a piece of spring
metal located on the platform A2 and extend-
ing out substantially as shown between the
platform and the teeth K2 of the disk K and
io pressing upward against the ratchet. The
free end of this spring extends out beyond
the teeth K2, affording an opportunity to de-
press the same by means of the thumb or
finger. The preferred means of attaching the
15 pawl in position so as to prevent its rotation
is as follows: The pawl J has an opening J2,
which closely fits around the bolt C. The in-
ner end of the pawl J is riveted at J to the
platform A. The sleeve D, to which the in-
20 ner end of the spring is attached, is fixed or
integral with the disk K. In order to enable
the disk K, sleeve D, and the coiled spring E
to rotate readily above the platform A2 and
around the bolt C, a large washer or elevated
25 piece can be placed between the spring-paw
Jand the coiled spring E. Such an elevating-
piece is more readily and economically pro-
vided by means of the raised or struck-up
discal portion M, located on the platform A.
30 This raised central portion N preferably ex-
tends over the pawl J and is cut away at its
under side, so as to allow it to elsewhere rest
upon the platform A2 while the spring-pawl J
fits into the parts cut away. This disk M has
35 an angulated central opening which receives
an angulated portion C of the bolt C and fits
closely thereto.
The mode in which my device operates is
substantially as follows: The frame at A4 be-
40 ing screwed or otherwise firmly secured to
the door, one end of the cord H is connected
to the hook G2 and wound around the cylinder
B a sufficient number of times to allow the
door to move the required distance without in-
45 juring the coiled spring E and without break-
ing the cord from the cylinder B or from an
eye R, to which the other end of the cord is at-
tached. When it is desired to cause the door
to shut, this eye is fastened on the door-frame
50 in a convenient position to enable the spring
to act freely and the cord to wind the spring
properly as the door is opened. The opening
of the door unwinds the cord II from the band
or drumB and winds the spring upon the sleeve
55 C, and thereby increases its tension or power,
and when the door is released and free to close
the reaction of the spring will turn the band
in the opposite direction and wind the cord
upon the same, thereby causing the door to
Go close. In case it is desired to cause the spring
to open the door the spring-eye or equiva-
lent connection is located on the wall or other
suitable place, so as to strain the cord in an
opposite direction from that in which it would
65 be strained to shut the door. Then as the
door is closed such action will operate to
wind up the spring. When the door is freeto open, the spring will wind up the cord and
open the door. Should the coiled spring E
be too strong, the pawl J may be depressed 70
and disengaged from the teeth K2 and moved
backward, so that the coils of the spring may
be decreased; but if the tension of the spring
is to be increased the pawl is moved forward,
thereby winding up the spring after the man- 75
ner of a clock-spring, the pawl J catching
into each tooth as it passes it and engaging
the same when allowed to do so.
Of the device which I have invented the
platform A, cylinder, spring-pawl, rotatable 8o
discal plate F, its raised portion M, frame A,
and hook F2 can all be made out of fiat ma-
terial struck up by means of dies in a very
economical and rapid way. My invention is
therefore economical of manufacture. The 85
parts can be readily and quickly assembled.
The device is simple of construction and very
effective in operation. It is also-convenient
of operation.
When desired, the mode of connecting the go
spring to the central sleeve D or its equiva-
lent may be modified:, a modification being the
pin D with enlarged head (see Fig. 5)' ar-
ranged to be received into a slot (not shown,
but easily understood), in the inner end of the 95
spring.
The mode of connecting the spring to the
cylinder or casing B, modified, consists in
omitting the hook F and utilizing the inner
end of the pin G by giving it extension and ioo
an enlarged head G3, adapted to be received
into a slot (not shown, but understood) in the
outer end of the spring.
What I claim as new and of my invention,
and desire to secure by Letters Patent, is-- 15
1. In a door-spring, the combination of the
supporting-frame, spring-pawl, cylinder B,
an intervening rotatable disk K, provided
with a ratchet for engaging the spring-pawl,
bolt C extending through the cylinder B and rid
fixed in the frame A so as to be non-rotata-
ble in the latter, coiled spring E at the inner
end fixed to a central portion of the device,
connected to the rotatable disk K so as to ro-
tate therewith in setting the tension of the 115
spring, and having its outer end fixed to the
inner side of the cylinder, and a cord H adapt-
ed to be attached to the outer side thereof
and to a door, whereby the cord may be
wound thereon as the door is closed by the 120
reaction of the spring, substantially as and
for the purposes specified.
2. In a door-spring, the combination of the
supporting-frame, cylinder B, spring-pawl J
fixed to the frame, an intervening rotatable 125
disk K, carrying a ratchet for engaging this
pawl, bolt C extending through the cylinder
B and fixed in the frame A so as to be non-
rotatable in the latter, collar or sleeve D ro-
tatable on the bolt and fixed to the disk K 136
and having slot D2, and coiled spring E hav-
ing the bent or hooked end Ea inserted in the
slot D, having its other end connected to the
interior of the hollow cylinder B, a cord, and2i
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Reference the current page of this Patent.
Bromley, Daniel W. Door-Spring., patent, October 15, 1901; [Washington D.C.]. (https://texashistory.unt.edu/ark:/67531/metapth514267/m1/3/?q=%22%22~1: accessed June 21, 2024), University of North Texas Libraries, The Portal to Texas History, https://texashistory.unt.edu.; crediting UNT Libraries Government Documents Department.