IMPROVEMENTS IN APPARATUS FOR FASTENING WINDOWS, WHICH APPARATUS IS ALSO APPLICABLE FOR OTHER FASTENING PURPOSES
Year: 1875

page_text: LETTERS PATENT to Robert Alexander Melvill, of Essex Road,,
Islington, in the County of Middlesex, Ironmonger, for the Inven-..
tion of "IMPROVEMENTS IN APPARATUS FOR FASTENING WINDOWS, WHICH
APPARATUS IS ALSO APPLICABLE FOR OTHER FASTENING PURPOSES."
Sealed the 16th July 1875, and dated the 15th February 1875.
PROVISIONAL SPECIFICATION left by the said Robert Alexander.
Melvill at the Office of the Commissioners of Patents, with his
Petition, on the 15th February 1875..
I, ROBERT ALEXANDER MELVILL, of Essex Road, Islington, in the
County of Middlesex, Ironmonger, do hereby declare the nature of the
said Invention for "IMPROVEMENTS IN APPARATUS FOR FASTENING WINDOWS,
WHICH APPARATUS IS ALSO APPLICABLE FOR OTHER FASTENING PURPOSES," to be as
follows:-

page_text: In my apparatus the use of springs which are liable to get out of
order are avoided.
I first describe the fastening applied to a window, though it may be
applied in like manner to other fastening purposes. On one bar of the
sash I fit an arm turning on an axis or pivot and formed with a claw,
clip, or saddle in which works a sliding or moveable pin terminating at
one end in a knob or other handle. As the arm moves the claw or
saddle travels over an arc curved projection or block formed or fixed on
the sash bar, and having in it an opening or socket to receive one end of
the pin when the fastening apparatus is to be retained in its open
position. Another arc, block, or curved projection also formed with an
opening or socket for the pin is fixed or formed on the sash bar.
This arc or block should be made thicker at the end (in which the
socket or opening is), and terminate in an abutment or stop.
When the fastening action is to be effected the arm is moved so that
it crosses the division between the sash bars and the claw, clip, or saddle,
rides over the second block or arc, and the pin is dropt into the opening
or socket therein. In this position the fastening action is securely
effected.
For some fastenings the pin is disposed obliquely or made inclined,
bevelled, or bent, and it drops into a correspondingly shaped sockets or
openings in the blocks. There may be guide grooves in the blocks.
SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said Robert Alexander Melvill in the Great Seal Patent
Office on the 6th August 1875.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, ROBERT
ALEXANDER MELVILL, of Essex Road, Islington, in the County of
Middlesex, Ironmonger, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Fifteenth day of February, in the year of
our Lord One thousand eight hundred and seventy-five, in the thirty-
eighth year of Her reign, did, for Herself, Her heirs and successors,
give and grant unto me, the said Robert Alexander Melvill, Her special

page_text: license that I, the said Robert Alexander Melvill; my executors, admi-
nistrators, and assigns, or such others as I, the said Robert Alexander
Melvill, my executors, administrators, and assigns, should at any time
agree with, and no others, from time to time and at all times there-
after 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 Inven-
tion for "IMPROVEMENTS IN APPARATUS FOR FASTENING WINDOWS, WHICH
APPARATUS IS ALSO APPLICABLE FOR OTHER FASTENING PURPOSES," upon the
condition (amongst others) that I, the said Robert Alexander Melvill,
my executors or administrators, by an instrument in writing under my,
or their, or one of their hands 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 imme-
diately after the date of the said Letters Patent.
NOW KNOW YE, that I, the said Robert Alexander Melvill, do hereby
declare the nature of the said Invention, and in what manner the
same is to be performed, to be particularly described and ascertained in
and by the following statement thereof, reference being had to the
accompanying Drawings and to the letters and figures marked thereon,
that is to say :-
The object of my Invention is the construction of fastening apparatus
especially applicable for fastening windows, but they are also applicable
for other fastening purposes.
In my apparatus the use of springs which are liable to get out of
order are avoided.
I first describe the fastening applied to a window, though it may be
applied in like manner to other fastening purposes. On one bar of the
sash I fit an arm turning on an axis or pivot and formed with a claw,
clip, or saddle in which works a sliding or moveable pin terminating at
one end in a knob or other handle. As the arm moves the claw or
saddle travels over an arc curved projection or block formed or fixed on
the sash bar, and having in it an opening or socket to receive one end of
the pin when the fastening apparatus is to be retained in its open
position. Another arc, block; or curved projection also formed with an
opening or socket for the pin is fixed or formed on the other sash bar.

page_text: provided with an opening or socket k¹ for the reception of the pin, when
it is to be retained in its closed or fastened position. These arcs or
blocks should be made thicker at the ends in which the sockets or
openings for the reception of the pin are formed, and should also
terminate in abutments or stops 1, 1*.
Figure 4 is a side view in elevation of the sash bar or meeting bar A,
with the plate C and its appurtenances. In this Figure the fastening is
in its opened position, and the pin fis at rest in the socket k.
Figure 5 is also a side view in elevation, but in this Figure the pin f
is shown raised as it would appear when the bar D with the claw e is to
be moved to traverse or ride over the arcs, blocks, or curved projections
E, E*, in order to effect its closing position.
Figure 6 is a perspective view of the arc, block, or curved projection
E on the sash bar or meeting bar B.
Figure 7 is a fragmentary view partly in section showing the arm D,
claw e, guide g, and pin f.
When it is desired to close or fasten a window, the pin fis raised by
the knob or handle P, and then the arm D with the claw e is caused to
travel or ride over the arc E in the direction of the arrow y, shown in
Figure 1, and on to and over the second arc E*, and the pin is then
dropped into the opening or socket ; thus the fastening action is
securely effected, and if an attempt were made nefariously to force back
the arm D by inserting an instrument between the sash bars A and B,
the pin resting in the opening or socket k¹ would resist such action. Of
course when it is desired to open the fastening the pin fis raised out of
the socket k¹, and the arm D with its claw e is caused to travel over the
arc E* in the direction shewn by the arrow z, in Figure 2, and on to E
when the pin fis allowed to drop into the socket k.
Figure 8 is a perspective view showing a like arrangement of
fastening, but in this instance the curved arcs E and E* have portions
cut away on both sides of them, so as to form guide ways for the claw
or clip to travel in; the fastening is shown in its closed position.
Figure 9 is a transverse section of one of the arcs for some fastenings,
the pin is disposed obliquely or made inclined, bevilled, or bent, and it
drops into corresponding shaped sockets or openings in the blocks.
There may be guide grooves in such blocks.

page_text: Having now described the nature of the said Invention, and in what
manner the same may be performed, I declare that I claim; the improved
construction of fastening wherein an arm formed with or terminating in
a claw, clip, or saddle, and provided with a pin working therein is
caused to travel over arcs, blocks, or projecting portions, the fastening
action being effected by the pin dropping into or engaging with such
arcs, blocks, or projecting portions, substantially in the manner described
and exemplified in the Drawings.
In witness whereof, I, the said Robert Alexander Melvill, have
hereunto set my hand and seal, this Twenty-eighth day of July,
in the year of our Lord One thousand eight hundred and seventy-
five
Witness;
ERNEST DE PASS,
Patent Agent,
68, Fleet Street,
London.
R. A. MELVILL. (L.S.)