IMPROVEMENTS IN WINDOW FASTENINGS
Year: 1884

page_text: PROVISIONAL SPECIFICATION.
WILLIAM MACVITIE and WILLIAM GEORGE MACVITIE of Wyldo Green in the
Parish of Sutton in the County of Warwick, Brassfounders, do hereby declare the
nature of our invention for IMPROVEMENTS IN WINDOW FASTENINGS to be as
follows:-
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In constructing a Window Fastening according to our Invention we make that
part of the fastening attached to the meeting rail of the lower sash a joint arm in
the centre of the arm we make a round cylinder that revolves on a round peg in
the centre of the foundation plate inside the cylinder we make two square holes
and one square hole to correspond in the foundation plate we then make a round
hole to receive a small wire nail with a rose head through the side of the cylinder
or through the centre of the peg in the cylinder and foundation plate round the
nail we make and fix a small wire coil spring the end of the nail is riveted on to a
part of the square peg which raises the square peg into the corresponding hole in
the cylinder connected to the arm and securely locks the two parts together eather
in a vertical or horizontal direction to release the locking shoulder we press on the
head of the nail and then the arm can he pulled back when drawn back into its
normal position it again locks into the other square hole in the cylinder we make a
corresponding foundation plate on the meeting rail of the upper sash in the centre
of the plate we fix a round peg with a rose head, the end of the arm we cut a
oblong slot that slips the peg the end part of the arm is beveled from the top side
when pushed home to fasten lifts and draws the sashes together and securely locks
the two together.

page_text: WILLIAM MACVITIE and WILLIAM GEORGE MACVITIE of Wylde Green Sutton
Coldfield in the County of Warwick, Brassfounders, do hereby declaro the nature of
our invention for IMPROVEMENTS IN WINDOW FASTENINGS, and in what manner
the same is to be performed, to be particularly described and ascertained in and
by the following statement:-
In constructing a Window-Fastening according to our invention we make that
part of the fastening attached to the meeting rail of the lower sash a joint arm in
the centre of the arm we make a round cylinder that revolves on a round peg in
the centre of the foundation plate. inside the cylinder we make two square holes
and one square holo to correspond in the foundation plate we then make a round
holo to receive a small wire nail with a rose head through the side of the cylinder
or through the centre of the peg in the cylinder and foundation plate round the
nail we make and fix a small wire coil spring the end of the nail is riveted on to a
part of the square peg which raises the square peg into the corresponding hole in
the cylinder connected to the arm and securely locks the two parts together
either in a vertical or horizontal direction. to release the locking shoulder we press
on the head of the nail and then the arm can be pulled back when drawn back into
its normal position it again locks into the other square hole in the cylinder we
make a corresponding foundation plate on the meeting rail of the upper sash in the
centre of the plate we fix a round peg with a rose head the end of the arm we cut
a oblong slot that clips the peg the end part of the arm is bevoled from the top sido
when pushed home to fasten lifts and draws the sashes together and securely locks
the two together.
We will proceed to describe with reference to the accompanying drawings the
manner in which our Invention is to be performed.
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Figure. 1. represents a completo window fastening in its locking position.
Figure. 2. represents a complete window-fastening in its unlocking position.
Figure. 3. represents a vertical section of our Invention. The same letters of
reference indicate the same parts in figures 1. 2. & 3.
We will first describe figure 3.
A. is the upper sash. B. is the lower sash. C. is the front foundation plate.
D. is the back foundation plate wo make that part of the fastening attached to the
meeting rail of the lower sash. B. jointed arm K in the arm we form a round
cylinder. J. that revolves on a round pog with a rose head. E. inside the cylinder. J.
we make two square holes and one corresponding hole in foundation plate. C.
that guides peg. H. one represonted with square peg. H. locked in its locking
position. We form a round hole through the centre of rose head. E. the end of
peg. F. we rivet to tooth H round the peg. F. we fix a wire coil spring. G. that
keeps tooth. H. in its locking position by pressing down peg F disengage tooth. H.
from its locking position as shown in dotted line. I. when drawn back by knob. M.
it then fastens into square hole. N. in its unlocking position as represented in
Figure. 2. on the meeting rail of the upper sash we fix a corresponding foundation
plate D. in the centre we fix a round pog with a rose head L. that receives the end

page_text: of arm K. when pushed home to its locking position on the end of arm K. we form
a oblong slot that clips peg L. that draws the sashes together. Knob M. forms &
handle to draw arm, K. across the meeting rails either in its locking or unlocking
position as represented in Figure 1. & 2.
Having now particularly described and ascertained the nature of our Invention
and in what manner in which the same is to be performed we declare that what
we claim is
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1st In a window fastening the combinations with the tooth, coil spring, and
cylinder with square hole in foundation plate and two corresponding holes in
cylinder and the action of the coil spring that raises the tooth in its locking
position and the pressing down to release the tooth from its locking position
substantially as shown and described.
WILLIAM MACVITIE.
WILLIAM GEORGE MACVITIE,