AN IMPROVED DRAUGHT AND DUST EXCLUDER
Year: 1876

page_text: LETTERS PATENT to John Hall, of Grantham, in the County of Lincoln,
Cabinet Maker, for the Invention of "AN IMPROVED DRAUGHT AND DUST
EXCLUDER."
Sealed the 22nd August 1876, and dated the 3rd April 1876.
PROVISIONAL SPECIFICATION left by the said John Hall at the Office of
the Commissioners of Patents on the 3rd April 1870.
" AN
JOHN HALL, of Grantham, in the County of Lincoln, Cabinet Maker.
IMPROVED DRAUGHT AND DUST EXCLUDER."
The object of this Invention. is the perfect exclusion of draught and dust, and
it is effected by the use of simple and effective apparatus constructed and applied
as herein-after described.
This Invention is especially adapted for the jambs and heads of all internal
doors, French casements, glass cases, &c., without any special preparation, and may
be applied to sliding sashes and doors which would require special arrangement;
it is not affected by atmospheric influence, and makes all doors and windows
hitherto noisy perfectly silent, and is very inexpensive.
The draught and dust excluder when made for a door of ordinary size consists
of a strip or strips of wood of about 14 inches wide and an inch thick molded
on one edge. The other edge of the strip or strips is rebated to receive a number
of elongated special springs fixed, say, about 4 or 6 inches apart in the rebate;
upon this series of springs is secured a piece or pieces of wood semicylindrical in
form, in. in diameter, which projects or project beyond the rebated edge of the
strip of wood; this semicylindrical piece of wood and the springs are then covered
with cloth or velvet, which is securely fastened within the rebate and on the inner
side of the strip of wood.
The fixings required for the draught and dust excluder are simple in the extreme,
as they may be merely screwed to the casings or linings of doors or windows; the
cloth edge presses tightly but firmly against the doors or windows when closed,
and thereby effectually prevents the admission of draughts or dust, while at the
same time it permits the door or window to close without the least obstruction.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said John Hall in the Great Seal Patent Office on the 31st August 1876.
JOHN HALL, of Grantham, in the County of Lincoln, Cabinet Maker.
IMPROVED DRAUGHT AND DUST EXCLUDER."
"; AN
The object of this Invention is the perfect exclusion of draught and dust, and
it is effected by the use of simple and effective apparatus constructed and applied
as herein-after described.
This Invention is especially adapted for the jambs and heads of all internal
doors, French casements, glass cases, &c., without any special preparation, and may
be applied to sliding sashes and doors which would require special arrangement;
it is not effected by atmospheric influence, and makes all doors and windows
hitherto noisy perfectly silent, and is very inexpensive.
The draught and dust excluder when made for a door of ordinary size consists
of a strip or strips of wood of about one and a half inches wide and half an inch
thick molded on one edge. The other edge of the strip or strips is rebated to
receive a number of clongated special springs fixed, say, about four or six inches
apart in the rebate; upon this series of springs is secured a piece or pieces of wood
semicylindrical in form, three-sixteenths of an inch in diameter, which projects or
project beyond the rebated edge of the strip or strips of wood; this semicylindrical
piece of wood and the springs are then covered with cloth or velvet, which is
securely fastened within the rebate and on the inner side of the strip or strips of
wood.
The fixings required for the draught and dust excluder are simple in the extreme,
as they may be merely screwed to the casings or linings of doors or windows; the
cloth edge presses tightly but firmly against the doors or windows when closed,
and thereby effectually prevents the admission of draughts or dust, while at the
same time it permits the door or window to close without the least obstruction.
In witness whereof, I, the said Jolin Hall, have hereunto set my hand and
seal, this Twenty-ninth day of August, in the year of our Lord One
thousand eight hundred and seventy-six.
JOHN HALL. (L.S.)