An Improved Method of Attaching and Securing Sash Lines or Cords to Window Sashes, Shutters, or other similar Devices.
Year: 1897

page_text: . Date of Application, 23rd July, 1897-Accepted, 25th Sept., 1897
An Improved Method of Attaching and Securing Sash Lines or Cords
to Window Sashes, Shutters, or other similar Devices.
I ROBERT BLAKE MCVITTIE M.D. of 43, Harcourt Street in the City of Dublin
Physician and Surgeon 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 :-
A chamber or recess is formed in any convenient position in the face of frame of
sash, shutter or other similar device. A hole is bored obliquely through the said
frame to connect chamber with chase or groove formed in frame to receive sash cord.
A plate of iron or other suitable metal having a V shaped piece cut out of it forms a
clamp to secure the cord which is fixed firmly into the fork or opening therein. This
plate or clamp is so proportioned to the length of the recess or chamber as to lie
within it at an angle of 30° or thereabouts with the direction of the pull. Prefer-
ably the clamp is formed in one piece with the cover plate which is then secured to
the frame by means of wood screws; in the other case the recess or chamber is covered
with a plate of metal or timber which is let into a dovetailed groove formed in the
frame to receive it.
The object of this invention is to facilitate the attachment of sash cords to
frames obviating the inconvenience and danger attendant upon the removal of the
frame.
To replace a defective or broken sash cord it is only necessary to unscrew the
clamp or cover plate and remove the clamp or plate from the chamber taking out
the defective or broken cord insert new cord in hole in chamber pushing cord through
until it makes its appearance at top of frame and then pulling a sufficient length
of it through attach to weight and having inserted an inch or so of other end in
fork of plate or clamp turning up end of cord as shown in drawing replace in
chamber sliding on cover plate or screwing to frame thus completing the
operation.
Referring to the accompanying drawings Fig. 1 is a front view of part of sash
frame or other similar device showing plan of chamber the dotted lines showing
chase or groove formed in back of said frame and the oblique auger hole communi-
cating chamber with same. C is the plate or clamp in position the dotted lines
indicating the cord and showing the way it is secured in fork of clamp by simply
inserting same therein and turning up the end over plate or clamp. Fig. 2 is a
section and Fig. 3 a side view of chamber showing sash cord with edge view of clamp
and Fig. 4 is a plan of plate or clamp and Fig. 5 a drawing of clamp and cover
plate combined.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed I declare that what I
claim is
An improved method of attaching and securing sash cords by the construction

page_text: of a chamber or recess in sash frames or other similar devices in combination
with a clamp as substantially set forth and described.
22nd July 1897.
Signed for ROBT. B. MCVITTIE,
Robt. Wm. Sharpe,
Agent.