Door Check. Page: 2 of 3
[2], 1 p. : ill. ; 23 cm.View a full description of this patent.
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UNITED STATES PATENT OFFICE.
WILLIAM DAILY SCARTBOROUGH, OF PENNINGTON, TEXAS.
DOOR-CHECK.
SPECIPICATION forming part of Letters Patent No. 387,738, dated August 14, 1888.
Application filed erLbruar i 3, l FS. Serial Noi. 264.9417. (No mdel.)
To all whont if may concern: casing, 7, having a transverse perforation, 8,
Beitknown that I, WILLIAMI DAILY SOAR- in its upper end, slides upon the rail, and is
BOROUGH, a citizen of the United States, resid- provided with two projecting lips, 9, upon the
ing at Pennington, Trinity county, in the State side facing the door-franme and upon the upper
5 of Texas, have invented new and useful Im- end,thelips being preferably,as shown,formed
provements in Door-Checks, of which the fol- at points above and below the transverse per-
lowing is a specification. foration, and the outer end of a brace or arm,
This invention has relation to door-checks 10, is pivoted upon a bolt, 11, passing through
or devices for retaining a door or gate in any the lips and through the end of the arm, and
To desired opened position; and it has for its ob- has its other end pivoted to the face of the
jects to provide such a door-check in which the lintel a short distance from the binge-jamb of
holding or clamping mechanism of the check the frame.
is operated automatically from the latch or The lower portion, 12, of the bolt-casing 7
knob of the lock, to provide a strong brace for is cylindrical and closed at the lower end, and
15 retaining the door in its adjusted position,and a bolt, 13, having a head, 14, sliding snugly in
to provide freely and easily moving parts for the casing, slides through a perforation, 15, in
the check, which at the same time will provide the closed lower end of the casing, while the
secure holds for the locking or clamping mech- upper side of the head is provided with a lip
anism of the check. or stud, 16, for engaging the notches in the
20 The invention consists in the improved con- under side of the rail upon the door, a coiled
struction and combination of parts of such a spring, 17, upon the bolt and within the cas-
door-check, in which a bolt-casing slides upon ing forcing the lip or stud into engagement
a rail carried at the upper edge of the door and with the notches.
has a bolt operated from the lock of the door The shank of the door-knob 18 is provided
25 for engaging the said rail, and in which a brace with a projecting arm, 19, to the outer end of
or arm is pivoted to the door-frame and to the which one end of a rod, 20, is pivoted, the
sliding bolt-casing, as will be more fully de- other end of the rod being pivoted to a disk
scribed, and particularly pointed out in the or bell-crank, 21, pivoted upon the door, and
claims. the lower end of a chain, 22, which is secured
30 In the accompanying drawings, which form to tIhe lower end of the sliding bolt, is secured
a part of this specification, and in which the to the disk or bell-crank at an angle to the rod,
same numerals of reference indicate the same so that the chain will be drawn downward
or corresponding parts in all thefigures,Figure when the disk is rocked.
1 is a perspective view of as much of a door It will now be seen that when the door-knob
35 and its frame as is necessary to illustrate the is turned and thedooropened thearm between
invention. Fig. 2 is a top plan view of the the lock-casing and the lintel will slide the
partly-opened door, showing the lintel in hori- lock-easing inward upon the rail until the knob
zontal section; and Fig. 3 is a vertical sectional is released, when the bolt will spring into the
view of the lock-casing or bolt-casing. Fig. 4 first notch in the rail which it will strike, and a
40 is a detail view of the lock-case anti its con- the door will then be held in that opened po-
nected brace. sition until the bolt is again released by turn-
In the drawings, the numeral 1 indicates the ing the knob and the door is moved to another
door, which is hinged to swing in the usual position.
manner in the door-frame 2, having the lintel For the purpose of admitting of the door
45 3. Arail, 4, having notches 5in its under side, being opened and closed freely without de-
is secured parallel to the upper edge of the pending upon turning the knob, the chain
door at a short distance out from the same, from the bolt maybe slipped under a stud, 23,
and preferably slightly above the upper edge, upon the side of the door, whereby the chain
the ends 6 of the rail being preferably bent to will be held drawn tight and the bolt in the cas-
5o form brackets for the rail, having their ex- ing will be held out of operative engagement
treme ends secured to the side of the door. A with the notches. The brace or arm being
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Scarborough, William Daily. Door Check., patent, August 14, 1888; [Washington D.C.]. (https://texashistory.unt.edu/ark:/67531/metapth171823/m1/2/: accessed July 18, 2024), University of North Texas Libraries, The Portal to Texas History, https://texashistory.unt.edu.; crediting UNT Libraries Government Documents Department.