Improvements in Bolts or Fastenings for Doors, Windows, and the like.
Year: 1899

page_text: Date of Application, 16th Oct., 1899
Complete Specification Loft 10th July 1000 Accented 18th Avg.
1000
PROVISIONAL SPECIFICATION.
Improvements in Bolts or Fastenings for Doors, Windows, and
the like.
I, WILLIAM DOYLE, Junior, residing at 2172 2nd Avenue, New York, in the
County and State of New York, United States of America, Inventor, do hereby
declare the nature of this invention to be as follows:-
This invention relates to bolts or fastening devices for doors, and the object
thereof is to provide an improved device of this class by means of which a door
may be securely locked or held closed and also held partially open or ajar when-
ever desired.
The invention is fully disclosed in the following specification, and in the
practice of my invention, I secure to a door, a plate, provided with a longi-
tudinal tubular keeper, which does not extend to the end edge of the door, but
terminates a predetermined distance therefrom.
I also secure to the frame of the door at a predetermined distance above the
plate a second plate having a tubular second keeper open at both ends, and
parallel with the first keeper, and below the second plate and second keeper
is a vertically arranged third keeper between which and the frame of the door
is an oblong space.
I also provide a bolt consisting of a horizontal portion which is placed in and
adapted to move in the first tubular keeper, and an angular portion connected
therewith and provided at its end with an angular projection parallel with the
main portion of the bolt and adapted to enter the second keeper or the third
keeper.
When it is desired to lock the door and to hold it in the closed position, the
bolt is slid back in the first keeper and the angular portion thereof is turned
upwardly, and said bolt is moved outwardly until the angular end projection
passes into the second keeper. This will securely hold the door in the closed
position and whenever it is desired to partially open the door but to prevent
it from being entirely opened the bolt is moved backwardly in the first keeper
the angular extension thereof turned downwardly, and said bolt is again moved
outwardly so that the end projection will pass within the third keeper. In
this position of the bolt, the door may be partially opened but cannot be opened
far enough to permit of a person passing in or out, the extent to which the door
may be opened being regulated by the length of the angular extension of the
bolt. In this operation, the angular projection at the end of the angular exten-*
sion of the bolt moves up and down in the third keeper as will be readily
understood, and I thus provide a simple and effective lock by means of which
a door may be locked in the closed position and also held free to swing to a
certain extent.
Although I have shown and described my improvement as a lock or fasten-
ing device for doors, it will be apparent that the same may be applied to gates,
windows and other hinged articles, as well as to doors, and many changes in

page_text: and modifications of the construction herein described may be made without
departing from the spirit of my invention or sacrificing its advantages.
Dated this 16th day of October 1899.
WHEATLEY & MACKENZIE,
40, Chancery Lane, London, W.C., Agents.
Improvements in Bolts or Fastenings for Doors, Windows, and
the like.
I, WILLIAM DOYLE, Junior, residing at 2172 2nd Avenue, New York, in the
City, County and State of New York, United States of America, Plasterer,
do hereby declare the nature of this invention and in what manner the same is
to be performed, to be particularly described and ascertained in and by the
following statement:
This invention relates to bolts for doors, windows or the like, and it has for
its object to provide a simple and improved fastening or locking device of this
class which will effectively operate to fasten the door when it is either closed
or partially open position.
In the accompanying drawing forming part of this specification in which like
numerals of reference denote corresponding parts in the several views:
Fig. 1 is an elevation illustrating the locking operation of the device when
the door is closed;
Fig. 2 is a corresponding view, with the door partially open;
Fig. 3 is a top or plan view of the structure shown in Fig. 1, partly in sec-
tion; and,
Fig. 4 is a view corresponding to Fig. 3 and illustrating the position of the
parts as shown in Fig. 2.
Referring to the drawings, 1 designates the door and 2 the frame, the bolt
device, 3, being secured upon the member 1, while the keeper device, 4 is
secured to the member 2.
The improved bolt device 2 comprised in my invention and improvements
comprises a bolt proper 5 having a main arm, 6, which is slidably and revolubly
mounted, and a supplementary arm, 7 which projects at right angles from the
main arm 6 and has a projecting end, 8, turned at right angles to the portion .
Said portions 7 and 8 thus form an angular extension of the main bolt arm 6,
The bolt device proper 5 is preferably of cylindrical contour, as shown, and it
may be slidably and revoluably mounted upon and connected with the door 1
in any suitable or desired manner. I prefer, however, to employ the plate, 9 as
herein illustrated, which may be secured by means of screws as at 10, and which
embodies a semi-cylindrical outwardly projecting portion, 11, adapted to receive
and retain the arm or rod 6. Said plate 9 has an opening, as at 12 at the front
end of the cylindrical portion being open at its rear side, and at the rear end of
the portion 11 the plate is provided with a slot, as at 13. By means of the
construction just described, the rod or arm 6 which is provided with a retaining
flange or head, as at 14, can be first inserted through the opening 12, and then
along at the back of the portion 11, and then turned forwardly to its seat in
said portion 11, whereby a convenient relative connection and adjustment
of the bolt proper 5 and its retaining plate 9 is effected in the application of
the device to the door 1; and after the plate 9 is secured to the door the head
or flange 14 will operate to retain the bolt proper 5 from accidental detachment
or disconnection from its plate 9. The end of the portion 8 is preferably turned

page_text: as shown at 15 to form a projection which will facilitate the engagement of the
angular end portion of the bolt with the keeper, as will be hereinafter set forth..
The keeper 4 embodies a long arm or body portion, 16 having angular
ends, 17, whereby the arm 16 is retained away from the surface of the frame 2
and a sufficient space intervenes between the inner surface of the arm 16 and
said surface 2 to receive the arm 7 of the bolt. At its angular portions 17,
the keeper 4 is secured to the frame 2, by means of a flange, 18, and screws 19
or in any other suitable manner. Said keeper is mounted in a position at right
angles to the longitudinal extension of the slidable and revoluable bolt arm G,
and its arm 16 is of sufficient longitudinal extension to entirely receive the
angular arm 7 of the bolt device, as clearly indicated in dotted lines in Fig. 1.
The inner face of the longitudinal arm 16 of the keeper is of greater width
or diameter than the arm 7 of the bolt device, so that said cylindrical arm
will have a firm bearing against the inner wall or face of the keeper arm 16
when the device is in the locking position illustrated in Fig. 1.
Above the keeper I have shown upon the door-frame a second keeper 20,
mounted upon a plate.21, and tubular to receive the end 8 of the bolt, said
keeper being slotted at the bottom at 22 to let the lug or projection 15 pass
through.
་
The operation and advantages of my invention will be readily understood.
The device is exceedingly simple and will conveniently and effectively operate
either as a lock bolt for fastening the door when it is closed or as a check bolt
which will fasten the door when it is partly opened. These alternate operations are
accomplished with the same simple device either with the extra keeper 20 or with-
out it as follows: When the door is closed, the bolt device 5 is slid across the
joint between the door and the casing, by means of the sliding office of the bolt
arm 6, until its angular end arm 7 is received within the space back of the inner
wall or the face of the keeper arm 16 (as represented in Figs. 1 and 3) in
which position said arm 7 will bear against the keeper arm 16 and serve to
retain the door securely in locked or fastened position. To fasten the door
in partly opened position, it is only necessary to slide back the bolt proper 5
until the end portion 8 registers with the rear wall or face of the keeper arm 16,
when the door can be opened, and, by reason of the revoluble operation of the
bolt arm 6, the same will turn, and the end portion S of the bolt will slide
upwardly upon and in engagement with the keeper arm 16 (this operation
being indicated in Figs. 2 and 4). During this movement of the bolt, as just
described, its end portion 8 will remain in connection with the keeper arm 16,
and will retain its engagement at all times while the door is partially opened,
this engagement being further ensured by the angular end projection 15.
Alternatively, the positive locking may be effected by using the long keeper
only by sliding engagement with the bolt and the said bolt may be with-
drawn and turned upwardly to be pushed into the upper keeper 20, thus hold-
ing the door against any opening I do not have to use this extra keeper, how-
ever, as I can accomplish both results by the one keeper as above described.
It will be understood that my improved bolt device is adapted for con-
venient and effective application, not only to doors, but to gates, and in all
other position and arrangement in which a swinging or hinged member is
adapted to be fastened or locked when either in closed or partially opened
position.
Having now particularly described and ascertained the nature of my said
invention and in what manner the same is to be performed I declare that what
I claim is
1. A lock or fastening device for doors, windows and the like comprising
a slidably and revolubly mounted bolt adapted to be connected with the door
or window, and a keeper in which said bolt slides vertically, to permit opening
the door or window slightly, substantially as shown and described.

page_text: 2. A lock or fastening device for doors windows and the like, comprising a
slidably and revolubly mounted bolt provided with an angular extension and
a keeper in which said bolt slides vertically, to permit opening the door or
window slightly, substantially as shown and described.
3. In a bolt or fastening device of the class described a longitudinally extended
keeper, and a slidable and revoluble bolt having an end engaging said keeper
with a locking contact at one position of said bolt and with a sliding contact
at another position of said bolt..
4. In a bolt or fastening device of the class described, a longitudinally
extended keeper, and a slidable and revoluble bolt embodying a main arm
carrying a supplementary arm projecting at an angle thereto and provided
with an angular end extension, the relative construction and arrangement being
such that the supplementary arm of the bolt engages the keeper in a longi-
tudinal plane at one degree of the slidable adjustment of the bolt to form a
fixed locking contact, while the angular end extension engages said keeper at
another degree of the slidable adjustment of the bolt to form a sliding contact.
Dated this 12th day of July 1900.
WHEATLEY & MACKENZIE,
40, Chancery Lane, London, W.C., Agents.