Improvements in Fastenings for Doors or Windows and the like.
Year: 1890

page_text: Date of Application, 5th Sept., 1890-Accepted, 18th Oct., 1890
COMPLETE SPECIFICATION.
Improvements in Fastenings for Doors or Windows and the like.
1, FRANZ RADEMANN, of Itzehoo, in the Province of Holstein, Kingdom of Prussia
and German Empire, Joiner, 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 :-
My invention relates to fastenings for doors, French windows, and the like, and is
designed to obviate the disadvantages attaching to the hitherto known fastenings, such
as the rusting of bolts and the sinking of the frames or casements produced by the
operation of such fastenings.
My invention is further designed to allow of the fastenings being easily fixed and
to effect perfect closure by their lever action.
In order that my invention may be the better understood I now proceed to describe
the same in relation to the accompanying drawings.
The devices shown in Figures 1 to 5 are preferably used for doors; Figures 1, 2, 4
and 5 being partly sectional elevations, and Figure 3 being a front elevation.
a is a base plate which is fixed to the door or window wing by means of
screws all
On the pin a' of this plate is pivotted a double lever, having a longer end c and a
shorter end formed like a claw c'. When the door or window is closed this claw c¹
enters in the hole d' of a plate d attached to the frame of the door or window (see
Figures 1, 2, 3 and 5.) or in a recess e¹ of the floor, sill, or other corresponding part e
(see Figure 4). When the door or window is to be closed, the claw c¹ is moved into
the recess dor e by means of the lever arm c. As soon as this has been effected a
pivotted detent provided on the door enters through a recess c" in the lever arm c
and locks the fastening (see Figures 2, 3 and 5.) or the lever arm c may be secured
under a fixed claw or detent f¹ (see Figures 1 and 4).
The arrangement shown in Figure 5, in which the lever c is divided into two parts g
and g pivotted at gl, is preferably used for high doors.
The modification shown in Figs. 6 to 9 are used preferably for windows without
centre posts; the device illustrated in Figs. 6 and 7 being applied to windows,
opening outwards and that shown in Figs. 8 and 9 for windows opening inwards.
In the devices, Figures 6, 7, 8 and 9 the closing lever his binged at h¹ to a
plate situated on the wing of the window. The shorter end of this lever is
also formed like a claw, which enters into a claw or hook k, Figures 8 and 9, or into a
plate k', Figures 6 and 7, of the casement 1. The hook k is arranged according as to
whether the window opens outwards or inwards.
The longer end of the lever has a slot through which moves a detent m which
serves to hold the lover in position after the window has been closed, and the length
of which varies according as to whether the window opens outwards, see Figures 6
and 7, or inwards, see Figures 8 and 9. The detent m is binged to the plate i¹ and
holds the lever in position by one or more teeth and engages by its weight.
These window fastenings are used in pairs on each window, one fastening working
upwards and the other downwards.
In the lower fastening the detaining teeth are on the concave side of the detent m,
see Figures 6 and 8, and in the top fastening they are on the convex side.
The plates are let flush into the wing and fixed with screws i".
Having now particularly described and ascertained the nature of the said inven-
tion and the manner in which the same is to be performed, I declare that what I
claim is :-
L:L
1-1

page_text: end and a short end, is pivotted on the door or window so as o swing perpendicularly
to the plan of the door or window, and held in position by a d tont, in order to allow
of the door or window being pressed home against the casemort and hold in position.
Dated this 5th day of September 1890.
FELL & WILDING,
1, Queen Victoria Street, E.C., Age .ts for the Applicant.