IMPROVEMENTS IN CASEMENT AND OTHER STAYS
Year: 1866

page_text: LETTERS PATENT to Edmund Tonks, of the Firm of William Tonks and
Sons, of Birmingham, in the County of Warwick, Manufacturers, for
the Invention of "IMPROVEMENTS IN CASEMENT AND OTHER STAYS."
PROVISIONAL SPECIFICATION left by the said Edmund Tonks at the
Office of the Commissioners of Patents, with his. Petition, on the
16th March 1866.
I, EDMUND TONKS, of the Firm of William Tonks and Sons, of Birmingham,
in the County of Warwick, Manufacturers, do hereby declare the nature
of the said Invention for "IMPROVEMENTS IN CASEMENT AND OTHER STAYS," to be
as follows:
My Invention consists of the improvements herein-after explained in con-
structing the parts of casement and other stays, by which said improvements
the adjusting and fastening of the stay are effected in a simple and efficient
manner without the use of the ordinary teeth racks, or, pin holes. Casement
and other stays made according to my Invention, are manufactured much
cheaper than stays of the ordinary construction.
In constructing a casement stay according to my Invention I make the
bar or arm which is jointed at one end to the casement of a wedge-shape in
cross section, that is, the said bar or, arm has inclined sides, the top being
broader than the bottom. I also make the opening in the staple or hollow

page_text: bracket through which the said bar or arm slides with inclined sides or of a
wedge shape, the narrow end of the wedge being at the bottom of the said
staple or hollow bracket. The said staple or hollow bracket is fixed by a
plate to the frame of the casement, and is capable of turning thereon as in
ordinary casement stays. Passing through the top of the staple or hollow
bracket described is a screw having at top a milled head, and at bottom a
disc or plate, which disc or plate can at pleasure be made to bear forcibly
against the upper side of the sliding bar or arm of the stay or be removed
therefrom. When the wedge-shaped sliding bar or arm passing through the
wedge-shaped opening in the 'staple or bracket on the casement frame is
lifted towards the top or wider end of the said opening the bar or arm is free
to move therein and can be adjusted so as to open the casement to the desired
extent. After having adjusted the sliding bar in the fixed staple or bracket
the screw passing through the top is turned so as to cause the disc or plate
on its bottom end to press the wedge-shaped bar forcibly into the narrow end
of the wedge-shaped opening in the staple or bracket and fix or wedge it
securely therein, the stay is thereby fixed. In order to release the bar or
arm from the staple or bracket it is only necessary to withdraw the screw
from the top of the bar and raise the bar towards the wide end of the wedge-
shaped opening when the said bar is free. to move through the said staple or
bracket.
By constructing the staple, or hollow bracket and sliding bar or arm
of casement and other stays of a wedge shape according to my Invention, the
teeth racks or pin holes which are used in ordinary stays are rendered
ainnecessary.
SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said Edmund Tonks in the Great Seal Patent Office on the
13th September 1866.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, EDMUND
TONKS, of the Firm of William Tonks and Sons, of Birmingham, in the County
of Warwick, Manufacturers, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Sixteenth day of March, in the year of our
Lord One thousand eight hundred and sixty-six, in the twenty-ninth year
of Her. reign, did, for Herself, Her heirs and successors, give and grant
unto me, the said Edmund Tonks, Her special licence that I, the said

page_text: Edmund Tonks, my executors, administrators, and assigns, or such others as
I, the said Edmund Tonks, my executors, administrators, and assigns, should
át 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 "IM-
PROVEMENTS IN CASEMENT AND OTHER STAYS," upon the condition (amongst
others) that I, the said Edmund Tonks, 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 immediately after the date of the said. Letters Patent..
NOW KNOW YE, that I, the said Edmund Tonks, do hereby declare the
nature of the said Invention, and in what manner the same is to be per-
formed, to be particularly described and ascertained in and by the following
statement thereof, that is to say:-
'
:
My Invention consists of the improvements herein-after explained: in
constructing the parts of casement and other stays, by which said improve.
ments the adjusting and fastening of the stay are éffected in a simple and
efficient manner without the use of the ordinary teeth racks or pin holes.
Casément and other stays made according to my Invention are manufactured
much cheaper than stays of the ordinary construction.
n
In constructing a casement stay, according to my Invention, I make the
bar or arm, which is jointed at one end to the casement, of a wedge shape
is cross section, that is, the said bar or arm has inclined sides, the top being
broader than the bottom: I also make the opening in the staple or hollow
bracket through which the said bar or arm slides with inclined sides or of a
wedge shape, the narrow end of the wedge being at 'the bottom of the said.
staple or hollow bracket. The said staple or hollow bracket is fixed by a
plate to the frame of the casement, and is capable of turning thereon as in
ordinary casement stays. Passing through the top of the staple or hollow
Bracket described is a screw having at top a milled head and at bottom a
disc or curved plate, which disc or plate can at pleasure be made to bear
forcibly against the upper side of the sliding bar or arm of the stay, or be
removed therefrom. When the wedge-shaped sliding' bar or arm passing'
through the wedge-shaped opening in the staple or bracket on the casement
frame is lifted towards the top or wider end of the said opening, the bar or
arm is free to move therein, and can be adjusted so as to open the casement

page_text: to the desired extent. After having adjusted the sliding bar in the fixed staple
or bracket, the screw passing through the top is turned so as to cause the
disc or plate on its bottom end to press the wedge-shaped bar forcibly into
the narrow end of the wedge-shaped opening in the: staple or bracket, and
fix or wedge it securely therein; the stay is thereby fixed. In order to
release the bar or arm from the staple or bracket it is only necessary to with-
draw the screw from the top of the bar, and raise the bar towards the wide
end of the wedge-shaped opening, when the said bar is free to move through
the said staple or bracket.
By constructing the staple or hollow bracket and sliding bar or arm of
casement, and other stays of a wedge shape, according to my Invention, the
teeth racks or pin holes which are used in ordinary stays are rendered
unnecessary.
⚫ 'Having explained the nature of my Invention I will proceed to describe,
with reference' to the accompanying Drawing; the 'manner in which the same
is to be performed.
Figure 1 represents in plan, Figure 2 in side elevation, and Figure 3 in
end elevation, a casement stay constructed according to my Invention ;
Figure 4 is a plan of the under side, and Figure 5 is a cross section of the
same; Figure 6 is a plan and end elevation of the bar or arm of the stay:
separately.
In Figure 3 the bar or arm of the stay (shewn in cross section) is
represented fixed to and in Figure 5 released from the staple or bracket.
The same letters of reference indicate the same parts in each Figure of the
Drawing.
:
á is the bar or arm of the casement stay jointed at 6 to the casement. The
said bar or arm a is of a wedge-shape in cross section, that is, 'it has inclined
sides, the top being broader than the. bottom (see Figures 3 and 5); c
is the staple or hollow bracket through the opening c³, in which the bar or
arm a slides. The staple or bracket c is 'fixed by the plated to the frame of
the casement, and is capable of turning on the said plate in the ordinary way.
The opening in the staple or bracket c is made with inclined sides or of a
wedge-shape, the narrow end of the wedge being at the bottom of the 'said
staple or hollow bracket (see Figures 3 and 5); e is a screw passing through
the top of the staple c, the said screw having at top a milled head and at
bottom a curved or bow plate f. By turning the screw e in one or other
direction the said plate f can be made to bear firmly upon the upper side of
the sliding bar or arm a, as seen in Figure 3, or be raised therefrom, as seen
in Figure 5. When the screw e is in the position represented in Figure 8; the
"

page_text: arm or bar a is fixed or wedged in the wedge-shaped opening in the staple
or hollow bracket c, and when in the position represented in Figure 5 the
said arm or bar a is free to be lifted towards the top or wide end of the said
opening, and moved and adjusted in the said staple or bracket so as to
open or close the casement to the desired extent. After having adjusted the
sliding bar or arm a in the staple or bracket c, the screw e is turned, and the
plate on its end made to bear upon and press the bar or arm a into the narrow
end of the wedge-shaped opening &, and thus fix or wedge the said bar
securely therein.
In applying my Invention to stays other than casement stays, I employ a
wedge-shaped sliding bar or arm, and a wedge-shaped or inclined opening in
the bracket or staple through which the arm or bar passes, as described and
represented with respect to a casement stay, the other parts being varied
to suit the particular article or purpose to which the stay is to be applied.
Casement and other stays of the construction described may be made of
brass, iron, or other hard metal or alloy.
Having now described the nature of my Invention, and the manner
in which the same is to be performed, I wish it to be understood that I
do not limit myself to the precise details herein described and illustrated,
as the same may be varied without departing from the nature of my
Invention; but I claim as my Invention the improvements in casement and
other stays herein-before described and illustrated in the accompanying
Drawing, that is to say, making the sliding bar or arm of the stay with
inclined sides or of a wedge-shape in cross section, and making the opening
in the staple or hollow bracket through which the said bar slides, also with
inclined sides or of a wedge-shape, substantially as described and illustrated,
whereby the adjusting and fastening of the stay are effected in a simple and
efficient manner, and the use of the ordinary teeth racks and pin holes is
dispensed with.
In witness whereof, I, the said Edmund Tonks, have hereunto set
my hand and seal, this Eleventh day of September, in the year of our
Lord One thousand eight hundred and sixty-six.
Witness,
HENRY SKERRETT,
Clerk to George Shaw.
EDMUND TONKS. (L.S.)