An Improved Shutter-fastening Device.
Year: 1891

page_text: Date of Application, 11th Mar., 1891
Complete Specification Left, 11th Dec., 1891-Accepted, 23rd Jan., 1892
PROVISIONAL SPECIFICATION.
An Improved Shutter-fastening Device.
I, WILLIAM HENRY MUNNS, of 106, 107, and 108 Victoria Chambers,
Chancery Lane, in the County of London, Patent Agent, do hereby declare the
nature of this invention (a communication to me from abroad by Richard J. Berdan,
of Paterson, New Jersey, U.S.A., Inventor) to be as follows:-
The object of my invention is a reliable fastening or lock for shutters. The
object sought I attain by the device which will be hereinafter described.
The invention consists of a lock or fastening for shutters, the plate portions of
which lock or fastening, that are formed of sheet metal of any suitable kind, as
iron, brass, etc., are hinged together.
Between the hinged parts of the plate portion of the device which is provided
with screw-holes is arranged on the hinge-pin a helical-spring, one of the ends of
which spring bears upon the back of one plate portion, and the other end of the
same bears upon the front of the other plate portion of the lock.
One plate is placed in position on the side of the outer overlapping stile of the
shutter, and is fastened thereto by screws, while the plate which is made a suitable
length to pass inward over the sub-sill to the inside of the sash, and which has an
orifice to accommodate a fastening-pin is turned down upon the sill, the orifice
passing over the pin in the action, which firmly locks the shutter in its closed
position, after which the sash which had been previously raised in the operation of
fastening the blind, is returned to its lowest position upon the plate, the orifice in
the sash passing over the pin. To open the shutter the sash is first raised from the
inside and the plate raised from its position on the fastening-pin, when it is done,
the spring which is in. tension automatically returns the same in its most elevated
position against the other plate and stile to remain in such position until the same
is again required in the operation of fastening the shutter.
By this invention the shutter is locked beyond the possibility of being opened
from the exterior of the building without a rending of its parts.
W. H. MUNNS.
T
COMPLETE SPECIFICATION.
An Improved Shutter-fastening Device.
I, WILLIAM HENRY MUNNS, of 106, 107, and 108 Victoria Chambers,
Chancery Lane, in the County of London, Patent Agent, do hereby declare the
nature of this invention (a communication to me from abroad by Richard J. Berdan,
of Paterson, New Jersey, U.S.A., Inventor) 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 my invention is a reliable fastening or lock for shutters.
The object sought I attain by the device illustrated in the accompanying
drawings, which will be hereinafter fully described and claimed.
Figure 1 is a side elevation of the device.
Fig. 2 shows in elevation the back of the fastening-plate of the device, arrange-
ment of spring, etc.
Fig. 3 is a plan.

page_text: and
shutter, in which figure the device is fastened in position and the shutter locked;
Fig. 5 is a part plan of the same.
A represents a lock or fastening for shutters, the plate portions B and C of
which lock or fastening, that are formed of sheet metal of any suitable kind, as
iron, brass, etc., are hinged together at D, as shown.
Between the hinged parts a a of the plate portion C of the device, which is
provided with screw-holes, is arranged on the hinge-pin e a helical spring E, one
of the ends of which spring bears upon the back of the plate portion C and the
other end of the same bears upon the front of the plate portion B of the lock, as
shown.
The plate C is placed in position on the inside of the outer overlapping stile F
of the shutter G and is fastened thereto by screws f, while plate B, which is made
of suitable length to pass inward over the sub-sill g to the inside of the sash H, and
which has an orifice to accommodate a fastening-pin n, is turned down upon the
sill g, the orifice 4 passing over the pin n in action, which firmly locks the shutter G
in its closed position, after which the sash H, which has been previously raised in
the operation of fastening the shutter G, is returned to its lowest position upon the
plate B, the orifice n' in the sash H passing over pin n, as seen in Fig. 4. To open
the shutter G, sash H is first raised from the inside and plate Braised from its
position on the fastening-pin n, when this is done spring E, which is in tension,
automatically returns the same to its most elevated position against the plate C
and stile F, to remain in such position until the same is again required in the
operation of fastening the shutter G.
By this my invention the shutter G is locked beyond the possibility of being
opened from the exterior of the building without a rending of its parts.
The method of fastening the shutters in a closed position by placing the sash H
upon the locking devices being old, I do not broadly claim the same.
Having now particularly described and ascertained the nature of this my said
invention, and in what manner the same is to be performed, I declare that what I
claim is:
In combination with two sheet-metal plates B and C, hinged together and of
unequal length, said plates having screw-holes and orifice h, respectively, a helical
spring E, placed on the hinge-pin e and between the hinged parts a a of said
plates B and C, the ends of said spring respectively resting upon said plates,
whereby the plate B, when out of action, is automatically restored and held to its
most elevated position against the plate C, substantially as shown and set forth.
Dated this 11th day of December 1891