Bottom Bolt Spring Socket for Folding Doors.
Year: 1894

page_text: PROVISIONAL SPECIFICATION.
Bottom Bolt Spring Socket for Folding Doors.
I, BENJAMIN WILLIAM HEYMANSON of Boise, Ada County, Idaho, U.S.A.,
Merchant do hereby declare the nature of this invention to be as follows:-
The object of this invention is to provide a bolt socket for fastening to the
floor which will not become clogged with dirt or sweepings when the bolt is
withdrawn therefrom. For this purpose there is fixed within the socket a spring
filling plate which has a tendency to rise up within the socket until it reaches the
level of the socket plate by which the socket is fixed to the floor. When the bolt
is pushed down it will push down the filling plate and when the bolt is raised the
filling plate will spring up within the socket and close the same at top. The
strength of the spring of the filling plate may be only such that the weight
of the bolt will keep it down or when the bolt is held down by a catch the
spring may be stronger.
Dated this 27th day of June 1894.
THOMAS R. SHILLITO,
89, Chancery Lane, London, W.C., Agent for the Applicant.
I, BENJAMIN WILLIAM HEYMANSON of Boise, Ada County, Idaho, U.S.A.,
Merchant, 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 :-
The object of this invention is to provide a bottom bolt spring socket which
will not not fill up with dirt or sweepings when the doors are open and con-
sequently not require to be cleaned or picked out to enable the bolt to enter.
In the drawing
Fig. 1 is a perspective view of the bottom bolt socket plate with two bolt
socket bearings or jambs on opposite sides of the bolt opening.
Fig. 2 is a perspective view of the spring with the filling plate rivetted to it,
fitting the bolt opening which is made a little wider beneath than at the top as
likewise the filling plate to fit the bolt opening in the socket.
Fig. 3 shews the mortise for the socket plate. The plate A with spring B
underneath it, is screwed down at 6 the spring working on the inclined planes c, c
(Fig. 3). The spring is turned upward in a curve at d. and moves freely downward
when the bolt is pressed into the socket and on raising the bolt, the spring throws
the filling plate C upward and into the opening T closing the same and preventing
the entrance of dust or dirt into the socket.
Fig. 4 shews the entire device with bolt attached to a door F¹. F is another
door.
As will be seen, when the bolt is pushed down it will press the filling plate C
down in the socket, closing the opening and fastening the door and when the bolt

page_text: is raised the spring B will throw the plate upwards in the socket to close it and
prevent dust or dirt entering therein.
Any of the bolt devices attached to the bottoms of doors will operate
successfully in the spring socket device of this invention and the mortises now
already made beneath the doors as or for sockets may be easily enlarged or
lengthened for the insertion of the strip D or the inclined planes c, c¹, may be cut
in the lengthened mortises for the spring to work in.
The spring B should be made only sufficiently strong to work the filling plate
so as not to throw open the bolt, where no bolt catch is employed. The filling
plate fits closely between the bearings or jambs e, e¹, forming guides between
which it moves freely up and down as the bolt is raised or lowered.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed, I declare that what I
claim is :-
In a bolt socket of the kind referred to, the combination of the plate A having
an opening for the bolt and of a flat spring plate B provided with the filling
plate C for the bolt opening, for the purpose specified, substantially as described
and shewn.
THOMAS R. SHILLITO,
89, Chancery Lane, London, W.C., Agent for the Applicant.