Improvements in Window Fasteners and Holders.
Year: 1892

page_text: Date of Application, 28th Dec., 1892-Accepted, 1st July, 1893
COMPLETE SPECIFICATION.
Improvements in Window Fasteners and Holders.
I, JOHN WILSON WRIGHT, of 11 Park Row in the City of New York, State
and County of New York, one of the United States of America, Manufacturer,
do hereby declare the nature of my 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 sash fasteners in general, and it consists of certain
improvements which are fully set forth in the following Specifications and shewn in
the accompanying drawings which form a part thereof.
More specifically my invention relates to a sash lock or fastener which may be
operated by a key, or a handle, and is especially adapted for railway carriage
windows, and the windows of private dwellings.
In the drawings in which like letters refer to like parts in each,
Fig. 1 is a perspective view of the case;
Fig. 2 is perspective view of the case with one side removed, showing within the
mechanism of the device, the dotted lines show the excursion limit of the various
parts, also the ratchet bar;
Fig. 3 is a perspective of parts.
In the drawings A is the case, A' is an opening for the spur-wheel, A' is the
pinion of the spur-wheel, A³ is the pinion of the pawls, A' is a key or knob-hole,
B is the spur-wheel, B' the teeth of the spur-wheel, C is a perforated metallic strip
or ratchet bar, C' are the perforations in the bar, C³ are screw-holes for fastening
the bar, D is the pawl, D¹ is a notch in the pawl, D, E and G are springs, F is the
arm, F is a lug on the arm, F' is a finger on the arm, X is the key.
In constructing my device a case A is provided, preferably made of thin sheet
metal. One side of this, as at A', is an open space. The case is further provided
with perforations to admit of the operation of the pinions of the various parts.
These are marked in Fig. 1 A' and A³, and also a key-hole A*. The key-hole A*
may be dispensed with, and a knob with a ward on it be made a permanent part of
the device when it is used in public conveyances.
Within the case and pinioned at A³ is located the spur-wheel B, the spurs of
which B¹ extend through the opening in the case A¹. These spurs engage in
indentations or punctures C, adapted to receive them, in the metallic strip C.
The spur-wheel B is controlled in its rotations by the pawl D, which is pinioned in
the case at A'. This pawl has a spring E, which throws it in place. On the
Pinioned on the same center as the
upper part of the pawl D is a notch D³.
spur-wheel loosely, so as to operate independently of the spur-wheel, is the arm F.
This arm has a lug F', which falls into the notch D' of the pawl D when the
device is locked and effectually prevents the pawl D from leaving its seat between
the spurs B of the spur-wheel B. The arm F has a spring G to assist it in its
operations. It has also a curved end F. The arm F is located in front of the
spur-wheel and the pawl, as shown.
The operation of this device is as follows: The case A is mortised into the Bash
or attached in any other manner, so that the spurs of the spur-wheel will enter the
holes in the strip C, which is fastened by means of screws C³ or in any other
manner in the groove where the sash operates when mortised in and on the jamb
when the device is attached to the outside of the sash. When it is desired to raise
the window, the key X is placed into the key-hole and turned so as to bring the
ward in contact with the curved end F of the arm F and the pawl D. A slight
pressure overcomes the resistance of the springs E and G, and the arm and pawl
are both raised at the same time. This will allow of the spur-wheel turning, and

page_text: the window-sash may be raised or lowered. When any desired point in the raising
or lowering is reached, the key is withdrawn, the pawl D falls into the space
between the spurs B' of the spur-wheel B at the sanie time the arm F falls down,
and the lug Fi falls into the notch D' of the pawl D, thus locking the pawl in its
position and preventing the spur-wheel from revolving. As the spurs are engaged
in the holes C¹ of the strip C, the locking of the device, as aforesaid, prevents the
sash from moving until the key is applied and the arm and pawl raised.
It is obvious that a knob with a ward could be used instead of a key, and in
public cars or other conveyances this method might be preferred.
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:
First The combination in a sash lock of a spur-wheel controlled by a pawl, the
spurs of the wheel operating in a perforated-metallic strip adapted to be located
in the jamb of a window frame, as herein described.
:
Second The combination in a eash lock of the case A, wheel B, pawl D, and
arm F, as herein shown and described.
Third: The combination in a sash lock of the case A, spur-wheel B, perforated
strip C, pawl D and spring E, as herein shown and described.
Fourth: The combination in a sash lock of the spur-wheel B, pawl D, arm F
and lug F, as herein shown and described.
Fifth The combination in a sash lock of the case A, spur-wheel B, pawl D,
arm F and spring G, as herein shown and described.
Dated this 28th day of December 1892.
HASELTINE, LAKE & Co.,
45, Southampton Buildings, London, Agents for the Applicant.