Improvements in Sash and Casement Fastenings.
Year: 1890

page_text: COMPLETE SPECIFICATION.
Improvements in Sash and Casement Fastenings.
I CHARLES SHOWELL of Lower Loveday Street Birmingham, in the County of
Warwick, Brassfounder do hereby declare the nature of this invention and in what
manner the same is to be performed, to be particularly described and ascertained in
and by the following statement:-
This invention consists in constructing and arranging the parts of sash and
casement fastenings from sheet metal, cut out, stamped, and bent in the manner
hereinafter explained, and an improved arrangement of parts whereby their durability
shall be increased.
As arranged to the fastening of sashes it may be described thus:-I provide upon
the meeting rail of the lower sash a short tube or barrel, in which is carried a sliding
and rotating gripping bolt, and upon the meeting rail of the top sash, 1 fix a nearly
similar barrel, the said barrels being situated exactly opposite one another, and in
line with each other.
Upon the outer end of the aforesaid sliding and rotating bolt is a thumb and finger
plate, or other equivalent device for moving it, having a collar at its junction with
the bolt. About midway in the length of the bolt, a folding joint is made so that the
outer end together with the plate &c. may be turned upon one side out of the way so
as not to interfere with curtains &c.
At the inner end of the bolt a tooth or projection is embedded, standing up from
the cylindrical surface of the said bolt.
Within the barrel upon the lower rail of the top sash, I provide a steel sheet metal
lining, which is flanged at the outer end in order to receive the pressure and wear
from the tooth or projection upon the bolt.
I will now more particularly describe this my invention and how it is to be
performed, with the aid of the accompanying illustrative sheet of drawings upon
which are figures and letters of reference, similar letters referring throughout the
several views to the same thing or part.
Fig. 1, is a plan view of this my improved fastening as applied to a sash, showing
the sashes fastened.
Fig. 2, is a plan view showing the sashes unfastened, and the plate or handle turned
out of the way.
Fig. 3, is a side view of the fastening &c. when secured.
Fig. 4, is a side sectional view when the sashes are being unfastened.
Fig. 5, shows detail views of the locking barrel.
Fig. 6, shows detail views of the steel lining for the locking barrel.
Fig. 7, shows detail views of the sliding barrel, and
Fig. 8, shows detail views of the bolt, with the steel projecting peg embedded
therein.
a,
is the meeting rail of the upper sash, and b is the meeting rail of the bottom
sash; c, is the sliding barrel, which is secured to the rail b; and d is a nearly similar
barrel secured to the rail a. Both the barrel c, and the barrel d, are first cut from a
piece of sheet metal, and then stamped and bent into the shape illustrated, and
provided with screw-down holes e, e¹, &c., by which they are secured to their respective
sashes. f, is a sliding bolt, capable of sliding and rotating in the barrels c & d. At
its front end is a thumb and finger plate g, by which it is manipulated. At h, is a
collar, which takes a bearing against the front face of the barrel c. In the said bolt
at i, a joint is made, so that when the bolt is withdrawn from the barrel d,-see
Fig. 2 it may be turned on one side out of the way. At the front end of the bolt
is provided the steel tooth or projection j, which, when pushed through the barrel d,
rides upon the outer face of the said barrel-see Fig. 1.
In the barrel d, a groove k,

page_text: is provided, wherein travels the tooth j. At 1, upon the bolt, is formed a peg, which
travels in the groove m, in the barrel c, in order that the tooth j, shall always be
preserved in a line with the groove k, so that it may readily enter thereinto.
Within the barrel d, I provide a steel lining n, see detail Fig. 6-the front
end o, of which is turned up flangewise, so that the front of the tooth j, shall work
thereon as seen in Figs. 1, & 3, while at the rear end, ear portions p, p, p, or their
equivalents are provided, which are turned up against the opposite end of the barrel,
in order to prevent its moving.
As will be readily seen, considerable wear takes place upon the face of the tooth j,
against the face of the steel lining o, and if made of the same metal as the bolt
(generally brass) it soon wears away and produces slackness in the fastening. In
order to obviate this, I embed a piece of steel i, in the mould in which that part of
the bolt is cast and run the molten metal around, which firmly unites it thereto
as one.
In order to fasten the sashes a, b, the bolt f, is brought into a straight line, and
then pushed forward, the peg 1, guiding the tooth j, into the groove k, in the
barrel d, until the collar h reaches the barrel c, as in Figs. 1 & 3. The bolt is now
rotated by means of the plate g, which causes the tooth to ride upon the inclined
surface at r, upon the barrel d, and in so doing, the two sashes à & bare drawn
together tightly. The reverse process will of course unfasten the said sashes.
Having now particularly described and ascertained the nature of this my said inven-
tion, and in what manner the same is to be performed, I declare that what 1
claim is :-
1st. The combination with the bracket d, of the steel lining n, substantially as
described and illustrated.
2nd. The combination with the jointed bolt f, of the embedded pegj, substantially
as described and illustrated.
3rd. The general construction and combination of the barrel d, formed of sheet
metal, having the steel lining n, with the sliding bolt f, having a turnback joint i,
and steel embedded peg j, and guide peg 1, the whole constructed and operating
substantially as hereindescribed and illustrated, and for the purposes specified.
Dated this 11th day of June 1890.
CHARLES T. POWELL.