Improvements in Chain Mattresses.
Year: 1886

page_text: Date of Application, 17th July, 1886.
Complete Left, 16th Apr., 1887.
Complete Accepted, 17th May, 1887.
PROVISIONAL SPECIFICATION.
Improvements in Chain Mattresses.
We ISAAC CHORLTON of Blackfriars Street Manchester in the County of
Lancaster Spring Mattress Manufacturer and GEORGE LAMB SCOTT also of Man-
chester aforesaid Engineer do hereby declare the nature of this Invention to be as
follows:-
دو
Our said Invention relates more particularly to a construction of chain mattress
manufactured by the firm of one of us the said Isaac Chorlton and now well known in
the market as the "Excelsior spring mattress. The said mattress as at present
constructed is formed of lengths of chain with short helical springs inter-
posed between the lengths the said combined lengths of chain and springs being
strained between the end bars of a mattress or bed frame as is well understood.
Hitherto the top and bottom lengths of chain have been attached directly to the end
bars of the mattress or bed frame that is to say without any interposed springs
between the chain and the bar, and we have found from experience that this inelastic
attachment of the chain to the bar has to a large extent neutralized the utility of the
springs interposed between the various lengths of chain. For example we have found
that when the mattress carries an occupant it "sags" too deeply in the centre but
fails to display any resilient qualities near the ends owing to the absence of springs
at the ends. In order to lessen this "sagging" at the centre and to give the mattress
the desired flexibility at the ends we dispense with the coupling springs which
intervene between the various lengths of chain and place springs at the points where
the chains are attached to the end bars. By these means we eliminate or lessen the
elasticity at the centre of the mattress so as to prevent the "sagging" alluded to

page_text: while at the same time we increase the flexibility at the ends so that the mattress
presents a more equal resistance to the weight throughout with a corresponding
increase of comfort to the occupant. A mattress of this construction can also bo
made more cheaply than a similar mattress of the ordinary construction owing to
the absence of the intervening springs. The surface of such a mattress may either
be composed of chains as described or of a succession of straight links. The sovoral
strands of chains or links are connected together at intervals by transverse ties or
connections which keep the strands from becoming separated.
Dated this 16th day of July 1886.
DUTTON & FULTON,
1, St. James Square, Manchester,
Agents.

page_text: COMPLETE SPECIFICATION.
แ
Improvements in Chain Mattresses.
We ISAAC CHORLTON of Blackfriars Street, Manchester in the County of Lancaster
Spring Mattress Manufacturer and GEORGE LAMB SCOTT also of Manchester aforesaid
Engineer, 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 and accompanying drawings-
Our said invention relates more particularly to a construction of chain mattress
manufactured by the firm of one of us, the said Isaac Chorlton, and now well known
in the market as the "Excelsior" spring mattress. The said mattress as at present
constructed is formed of lengths of chain with short helical springs interposed between
the lengths, the said combined lengths of chain an springs being strained between the
ond bars of a mattress or bed frame as is well understood. Hitherto the top and
bottom lengths of chain have been attached directly to the end bars of the mattress or
bed frame, that is to say without any interposed springs between the chain and tho
bar, and we have found from experience that this inelastic attachment of the chain to
the bar has to a large extent neutralized the utility of the springs interposed between
the various lengths of chain. For example we have found that when the mattress
carries an occupant it "sags "too deeply in the centre but fails to display any resilient
qualities near the ends, owing to the absence of springs at the ends. In order to
lessen this "sagging" at the centre and to give the mattress the desired flexibility at
the onds, we dispense with the coupling springs which intervene between the various
lengths of chain and place springs at the points where the chains are attached to the
end bars. The figure on the accompanying sheet of drawings illustrates the
improvement clearly. AA are the side bars; B B are the ond bars connected to the sides
by the brackets CC; DD are the chains which it will be observed have no intervening
springs in their length. The ends of the said chains instead of being attached
directly to the end bars B, B are connected by springs E E. The chains are or may
be connected laterally by means of transverse links F F. By these means we
eliminate or lessen the elasticity at the centre of the mattress so as to prevent the
sagging" alluded to while at the same time we increase the flexibility at the ends so
that the mattress presents a more equal resistance to the weight throughout, with a
corresponding increase of comfort to the occupant. A mattress of this construction
can also be made more cheaply than a similar mattress of the ordinary con-
struction owing to the absence of the intervening springs. The surface of such a
mattress may either be composed of chains as described or of a succession of straight
links.

page_text: Having now particularly described and ascertained the nature of the said invention
and in what manner the same is to be performed we declare that what we claim is :-
In mattresses of the indicated type or description, forming the lengths of chain or
corresponding links without intervening springs and connecting the said lengths
of chain or links to the end bars of the mattress frame by means of springs
for the purposes and substantially in the manner hereinbefore described and
shown.
DUTTON & FULTON,
1, St. James Square, Manchester,
Agents.