IMPROVEMENTS IN SASH AND CASEMENT FASTENINGS.
Year: 1883

page_text: LETTERS PATENT to Edwin Alfred Showell the younger of the firm of Edwin
Showell and Sons of Birmingham in the County of Warwick Brassfounders
and Charles Turner of Birmingham aforesaid Pattern Maker for an Invention
of "IMPROVEMENTS IN SASH AND CASEMENT FASTENINGS. "
PROVISIONAL SPECIFICATION left by the said Edwin Alfred Showell tho
younger and Charles Turner at the Office of the Commissioners of Patents
on the 13th January 1883.
EDWIN ALFRED SHOWELL the younger of the firm of Edwin Showell and Sons
of Birmingham in the County of Warwick Brassfounders and CHARLES TURNER of
Birmingham aforesaid Pattern Maker "IMPROVEMENTS IN SASH AND CASEMENT
FASTENINGS
Our invention consists in constructing and arranging the parts of sash and
casement fastenings in the manner hereinafter described.
We will describe our invention as applied to the fastening of sashes.
Upon the meeting rail of the lower sash we fix a barrel or short tube and upon
the meeting rail of the top sash we fix a nearly similar barrel or short tube the
said barrels being situated opposite one another or in the same line. In the said
barrels a bolt slides and rotates. Its outer end is furnished with a head or finger
plate for moving it the head joining the bolt by a collar. The inner end of the
bolt has a tooth or nib upon it. In the bottom of the barrel fixed on the top sash
is a groove or channel of a size and figure suitable for the tooth or nib on the bolt
to slide in. The barrel of the other part of the fastening is without a groove or
channel. On one side of the distant end of the grooved barrel is an incline and
there is a stop at the bottom of the incline. This incline is for the purpose of
drawing together the sashes after they have been fastened.
In fastening the sashes together the bolt in the front barrel is pushed towards
the top sash in such a position that its tooth or nib enters and passes out of the

page_text: groove or channel in the back barrel on the top sash. When the bolt has been
fully pushed home in the barrels the tooth or nib on the inner end of the bolt is
external to the back barrel and by now giving the bolt a partial rotation its tooth
or nib bears against the end of the said back barrel and thereby fastens the sashes
together. By continuing the rotation of the bolt its tooth or nib travels upon the
incline on the said end of the barrel until it strikes against the stop at the
bottom of the incline. The sashes are thus fastened and drawn forcibly together.
To unfasten the sashes the bolt is rotated in the opposite direction to that by
which the sashes are fastened until its tooth or nib is brought opposite the groove
or channel in the back barrel when by a sliding motion the bolt may be withdrawn
from the said back barrel and the sashes unfastened. The tooth or nib on the bolt
prevents it from being wholly withdrawn from the front barrel on the meeting rail
of the bottom sash.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed
by the said Edwin Alfred Showell the younger and Charles Turner in the
Great Seal Patent Office on the 6th July 1883.
EDWIN ALFRED SHOWELL the younger of the firm of Edwin Showell and Sons
of Birmingham in the County of Warwick Brassfounders, and CHARLES TURNER
of Birmingham aforesaid Pattern Maker "IMPROVEMENTS IN SASH AND CASEMENT
FASTENINGS"
Our invention consists in constructing and arranging the parts of sash and
casement fastenings in the manner hereinafter described.
We will describe our invention as applied to the fastening of sashes.
Upon the meeting rail of the lower sash we fix a barrel or short tube and upon
the meeting rail of the top sash we fix a nearly similar barrel or short tube the
said barrels being situated opposite one another or in the same line. In the said
barrels a bolt slides and rotates. Its outer end is furnished with a head or finger
plate for moving it, the head joining the bolt by a collar.
The inner end of the bolt has a tooth or nib upon it. In the bottom of the
barrel fixed on the top sash is a groove or channel of a size and figure suitable for
the tooth or nib on the bolt to slide in. The barrel of the other part of the
fastening is without a groove or channel. On one side of the distant end of
the grooved barrel is an incline and there is a stop at the bottom of the incline.
This incline is for the purpose of drawing together the sashes after they have been
fastened.
In fastening the sashes together, the bolt in the front barrel is pushed towards
the top sash in such a position that its tooth or nib enters and passes out of the
groove or channel in the back barrel on the top sash. When the bolt has been
fully pushed home in the barrels the tooth or nib on the inner end of the bolt
is external to the back barrel and by now giving the bolt a partial rotation its
tooth or nib bears against the end of the said back barrel and thereby fastens
the sashes together. By continuing the rotation of the bolt its tooth or nib travels
upon the incline on the said end of the barrel until it strikes against the stop
at the bottom of the incline. The sashes are thus fastened and drawn forcibly
together.
To unfasten the sashes, the bolt is rotated in the opposite direction to that by
which the sashes are fastened until its tooth or nib is brought opposite the groove
or channel in the back barrel, when by a sliding motion the bolt may be withdrawn
from the said back barrel and the sashes unfastened. The tooth or nib on the bolt
prevents it from being wholly withdrawn from the front barrel on the meeting rail
of the bottom sash.
We will now proceed to describe with reference to the accompanying Drawing
the manner in which our invention is to be performed.
Figures 1 and 2 represent in plan and Figures 3 and 4 in end elevation a sash
fastening made according to our invention; Figure 5 represents a longitudinal
section of the same and Figure 6 a side elevation of the same.
The same letters of reference indicate the same parts in the several Figures of
the Drawing.
"
a is the meeting rail of the upper sash and b is the meeting rail of the bottom
sash; c is a barrel or short tube fixed upon the meeting rail b and d is a nearly
similar barrel fixed upon the meeting rail a of the upper sash; e is a bolt capable
of sliding and rotating in the barrels c and d, the said bolt being moved by the
head or finger plate e'; f is a tooth or nib on the inner end of the bolt e. In the

page_text: bottom of the back barrel d is a groove or channel g for the tooth or nib fon
the bolt to slide in and on the distant end of the back and grooved barrel & is an
incline / used in conjunction with the nib or tooth f for fastening and drawing
together the two sashes. At the bottom or on one side of the incline / is a stop i.
The nib or tooth f prevents the bolt e from being wholly withdrawn or detached
from the front barrel c as the said front barrel is without a longitudinal slot or
groove at its bottom.
In order to fasten the sashes a b, the bolt e in the front barrel c is pushed
towards the top sash a the tooth or nib f of the said bolt e entering the groove or
channel g in the back barrel d as seen in Figures 3 and 5, and the said bolt is then
pushed fully home so that the said tooth or nib is situated external to the said
back barrel d. By now giving the bolt e a partial rotation its tooth or nib fis
removed from the channel or groove g and takes a bearing against the end of the
said barrel & the continued rotation of the bolt causing the tooth or nib f to travel
upon the inclined end h of the barrel until it strikes against the stop i at the
bottom of the incline as seen in Figures 4 and 6. The sashes are thereby fastened
and drawn forcibly together. By rotating the bolt e so as to again bring its nib or
tooth fopposite the groove or channel g in the back barrel & the said bolt may, by
a sliding motion be withdrawn into the position represented in Figures 2 and 4 so
as to unfasten the sashes.
We apply our invention to the fastening of casements substantially in the manner
herein before described and illustrated in the accompanying Drawing with respect
to the fastening of window sashes.
Having now described the nature of our invention and the manner in which the
same is to be performed We wish it to be understood that we claim as our invention
of "Improvements in sash and casement fastenings":
"
The construction and combination of the sliding and rotating bolt e, e² having a
tooth or nib fat its inner end, working in a barrel on one sash or part of the
casement, with the grooved barrel d having an inclined end h and stop i on the
other sash or part of the casement, the fastening and drawing together of the two
sashes or parts of the casement being effected on the partial rotation of the bolt e
by the engagement of the tooth or nib f on the said bolt with the inclined end
of the barrel d substantially as herein before described and illustrated in the
accompanying Drawing.
In witness whereof I the said Edwin Alfred Showell have hereunto set my
hand and seal this second day July in the year of our Lord one thousand
eight hundred and eighty-three