IMPROVEMENTS IN FASTENINGS FOR WINDOW SASHES AND FOR OTHER PUR- POSES.
Year: 1872

page_text: LETTERS PATENT to Charles Grecnsill Morgan, of Rose Cottage,
Swilly, Plymouth, in the County of Devon, for the Invention of
"IMPROVEMENTS IN FASTENINGS FOR WINDOW SASHES AND FOR OTHER PUR-
POSES.'
"
Sealed the 20th November 1872, and dated the 23rd September 1872.
PROVISIONAL SPECIFICATION left by the said Charles Greensill
Morgan at the Office of the Commissioners of Patents, with his
Petition, on the 23rd September 1872.
I, CHARLES GREENSILL MORGAN, of Rose Cottage, Swilly, Plymouth,
in the County of Devon, do hereby declare the nature of the said
Invention for "IMPROVEMENTS IN FASTENINGS FOR WINDOW SASHES AND FOR
OTHER PURPOSES," to be as follows :—
This Invention has for its object improvements in fastenings for
window sashes and for other purposes.
These fasteners as at present
usually constructed are easily put back by means of a knife inserted
between the sashes. To obviate this I employ a curved bolt. The curve

page_text: of the bolt is a semicircle, or nearly so, and the bolt is carried in a
guide of corresponding form fixed to one of the sashes. The bolt has a
knob upon the top or side by which it can be moved to the extent of a
quadrant or thereabouts. Upon the other sash, or that which does not
carry the parts already mentioned, a socket is fixed to receive the end of
the bolt when it projects. This socket is inclined so that the bolt
entering the socket draws the two sashes close together.
Any pressure applied to the bolt by a knife or instrument inserted
between the sashes will not force the bolt back, as the pressure will be
exerted radially or nearly so to the bolt and its guide.
Those fastenings may also be used for casements or doors and wherever
SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said Charles Greensill Morgan in the Great Seal Patent
Office on the 22nd March 1873.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, CHARLES
Greensill MorgAN, of Rose Cottage, Swilly, Plymouth, in the County
of Devon, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Twenty-third day of September, in the
year of our Lord One thousand eight hundred and seventy-two, in
the thirty-sixth year of Her reign, did, for Herself, Her heirs and
successors, give and grant unto me, the said Charles Greensill Morgan,
Her special license that I, the said Charles Greensill Morgan, my exc-
cutors, administrators, and assigns, or such others as I, the said Charles
Greensill Morgan, my executors, administrators, and assigns, should
at any time agree with, and no others, from time to time and at
all times thereafter during the term therein expressed, should and
lawfully might make, use, exercise, and vend, within the United Kingdom
of Great Britain and Ireland, the Channel Islands, and Isle of Man, an
Invention for "IMPROVEMENTS IN FASTENINGS FOR WINDOW SASHES AND
FOR OTHER PURPOSES," upon the condition (amongst others) that I,
the said Charles Greensill Morgan, my executors or administrators, by
an instrument in writing under my, or their, or one of their hands

page_text: and seals, should particularly describe and ascertain the nature of the
said Invention, and in what manner the same was to be performed, and
cause the same to be filed in the Great Seal Patent Office within six
calendar months next and immediately after the date of the said Letters
Patent.
NOW KNOW YE, that I, the said Charles Greensill Morgan, do hereby
declare the nature of the said Invention, and in what manner the same
is to bo performed, to be particularly described and ascertained in and
by the following statement thereof, that is to say :—
This Invention has for its object improvements in fastenings for
window sashes and for other purposes.
These fasteners as at present
usually constructed are easily put back by means of a knife inserted
between the sashes. To obviate this I employ a curved bolt. The curve
of the bolt is a semicircle, or nearly so, and the bolt is carried in a
guide of corresponding form fixed to one of the sashes. The bolt has a
knob upon the top or side by which it can be moved to the extent of a
quadrant or thereabout. Upon the other sash, or that which does not
carry the parts already mentioned, a socket is fixed to receive the end of
the bolt when it projects. This socket is inclined so that the bolt
entering the socket draws the two sashes close together.
Any pressure applied to the bolt by a knife or instrument inserted
between the sashes will not force the bolt back, as the pressure will bo
exerted radially or nearly so to the bolt and its guide, and the bolt is so
supported by the peculiar form of the casing that it cannot be bent, and
there is no pivot or radius bar to bend.
These fastenings may also be used for casements or doors and wherever
an ordinary turn button can be employed.
In order that my said Invention may be most fully understood, and
readily carried into effect, I will proceed to describe the Drawings here-
unto annexed.

page_text: a is a plate which is fixed by screws to the lower sash. Upon it the
guide socket 6 is fixed. This socket is a portion of a circle and it
contains the bolt c. The arm c¹ of the bolt projects out through a slot
in the side of the socket, and it carries the knob c³. d is a plate similar
to the plate a, which is fixed by screws to the upper sash, and it has
attached to it the socket e, which is similar to the socket b, but is a
somewhat smaller arc of the circle. As is shewn by the Figure 4 the
point of the bolt is inclined so that it will enter the socket e without
requiring the sashes to be brought to their proper places, and when the
point of the bolt has entered the inclines draw the sashes home.
When the window is closed and fastened the bolt for the extent of
balf of its length or thereabout enters the socket e, and so the two
sashes are bound firmly together. No pressure put on the bolt by any
instrument inserted between the sashes will have any tendency to move
it as the pressure will come upon it radially, or nearly so, and the bolt is so
supported that it cannot be bent; nor can the bolt be moved by noozing
its knob or handle by means of a fine wire inserted through a hole bored
for the purpose in the woodwork of the upper sash (a method of opening
windows commonly resorted to for felonious purposes) because there is
no position on the exterior of the window from which an effective pull
can be brought to bear upon the bolt. f is a guard attached to tho
socket e to prevent the bolt being shot when the window is almost but
not entirely closed.
Sometimes in order to prevent mistake as to the bolt being shot or
otherwise I attach a curved plate to the arm c' of the bolt on the left
hand side of the knob c³, and on this plate which when the bolt is drawn
back will face the interior of the room I inscribe the word "open," and
on an extension of the word "shut," which word can only be seen
from the interior of the room when the sash is completely closed and
securely fastened.
Figures 5, 6, 7, and 8 are views similar to Figures 1, 2, 3, and 4 of
another window fastener differing from that first described. In that the
knob of the bolt c is on the top, and its stem passes through a slot at
the top of the guide socket in place of at the side. The knob is
screwed into the bolt, and can be turned so as to cause it to act as a
binding screw, clipping the top of the guide socket and so locking the
bolt in position.

page_text: It will be observed that this Invention avoids the use both of pivots
and radius bars.
These fastenings are applicable to secure casements and sliding doors
and for other similar uses.
What I claim is the construction of fastenings for window sashes and
for other purposes, substantially as described.
In witness whereof, I, the said Charles Greensill Morgan, have
hereunto set my hand and seal, this Fourteenth day of March,
in the year of our Lord One thousand eight hundred and seventy-
threc.