IMPROVEMENTS IN FOLDING CHAIRS
Year: 1880

page_text: PROVISIONAL SPECIFICATION left by the said George Alexander Dallas at
the Office of the Commissioners of Patents on the 22nd September 1880.
GEORGE ALEXANDER DALLAS, of Bethnal Green Road, in the County of
Middlesex. "IMPROVEMENTS IN FOLDING CHAIRS."
From either side of the chair-back at the point at which the arms, as chairs are
ordinarily made, are joined thereto springs a metal stud. In the end of each arm
I form a slot with subsidiary slots rising from its top edge. The arms by means
of these slots permit of the adjustment of the angle of inclination of the chair-back
with its seat, as may be desired, and the subsidiary slot gripping the stud holds the
back in position; these results are effected by simply raising the armis of the chair.
At the sides of the bottom of the chair, and extending from the front to the back
legs, I fix stretchers, preferably of wood, but iron or other suitable material may be
used. Each of these stretchers at one end works freely round the front list of the
chair, and the other end is formed into a hook or catch which grips the back list,
and thereby imparts strength to the frame of the chair, and obviates the liability
to any part thereof getting damaged or broken by collapse.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed
by the said George Alexander Dallas in the Great Seal Patent Office on the
22nd March 1881.
GEORGE ALEXANDER DALLAS, of Bethnal Green Road, in the County of
Middlesex. IMPROVEMENTS IN FOLDING-CHAIRS."
"
My Invention relates to improvements in folding-chairs. From either side of
the chair-back at the point at which the arms, as chairs are ordinarily made, are
joined springs a metal stud. In the end of each arm I form a slot with subsidiary
slots rising from its top-edge. The arms by means of these slots permit of the
adjustment of the angle of inclination of the chair-back with its seat, as may bo
desired, and the subsidiary slot gripping the stud holds the back in position; these
results are effected by simply raising the arms of the chair. At the sides of the
bottom of the chair, and extending from the front to the back legs, I fix stretchers,
preferably of wood, but iron or other suitable metal may be used. Each of these.
-stretchers at one end works freely-round-the front-list of the chair, and the other
end is formed into a hook or catch which grips the back list, and imparts thereby
strength to the frame of the chair, and obviates the liability_to_any_part-thereof
getting damaged or broken by collapse.
-For-the-better-explanation-and-iliustration of my said Invention I refer to the
accompanying Drawings, in which the same letters designate the same parts.
Figure 1 is a side view of a folding-chair showing my Invention; Figure 2 is a
front view of said folding-chair; Figure 3 is a detailed view on a larger scale,
partly in section taken on the line A, B, in Figure 1, of the stud and slots.
a is the frame of the back; b is the seat; c is the arm; c¹ is the slot; c², c², c³,
c², c², are the subsidiary slots; d is the stud; e is the front list; f is the back list;
9, 9, are the stretchers, one of which is drawn out of position to show the catch g'.
Having now fully described the nature of my said Invention, and the means by
which it can be carried into effect, I wish it to be understood that what I consider
new, and therefore secured to me by the hereinbefore in part recited Letters Patent
is set forth in the following claims:-
1st. In a folding-chair the use of a slot in each of the arms in combination with
a stud springing from the chair-back, substantially as and for the purpose herein-
before described and illustrated in the said Drawings.
2nd. The use of subsidiary slots in combination with either the stud or the slot
herein before mentioned, as and for the purpose hereinbefore described and illustrated
in the said Drawings.
In witness whereof, I, the said George Alexander Dallas, have hereunto set
iny hand and seal, this Nineteenth day of March, in the year of our Lord
One thousand eight hundred and eighty one.
Signed and sealed in presence of
P. O'HALLORAN,
Patent Ageut,
GEORGE ALEXANDER DALLAS. (L.S.)
28, Southampton Buildings,
E.C.