Improvements in Spring Seats and Mattresses and in Springs therefor.
Year: 1898

page_text: PROVISIONAL SPECIFICATION.
Improvements in Spring Seats and Mattresses and in Springs
therefor.
I, WALTER PERRINS, of 79, Hampton Road, Birchfields, Birmingham, in the
County of Warwick, Engineer, do hereby declare the nature of this invention to
be as follows:-
This invention has reference to those spring seats and mattresses in which
the springs are what are known as sofa springs made of wire coiled into a spiral
form enlarged at the top and bottom with a smaller waist. These springs are
arranged side by side and at their enlarged tops and bottoms are fixed together by
metal clips or by other means and are also similarly fixed to two wire frames
which surround the outside edges of the springs at top and bottom. Heretofore it
has been customary for the wire in each spring at the termination of the last coil
to be bent round the preceding coils thus forming knots or protuberances which
are objectionable as they are liable to wear the material of the seat or mattress
which rests upon them.
According to one part of my invention instead of forming the last or larger
coil of each of the wire springs into a knot or protuberance, I continue the said
wire round and round as a flat spiral towards the centre of the spring at the top
and bottom or at the top only of the spring thus filling up the tops and bottoms
of the springs or the tops only by a flat surface instead of leaving them open as
heretofore. When the springs are make up into a seat or mattress frame as above
described the tops of the springs will forn a level surface for the whole of the
seat or frame instead of the centre of each spring being hollow as heretofore. I
thus provide an even springy surface to the spring seat or mattress without knots
or other protuberances so that the seat or mattress will only need a very thin bed
or loose covering to be laid upon it.
Instead of continuing the wire at the ends of the springs in the form of a flat
spiral as above described, I may secure the ends of the wire springs to the pre-
ceeding coil by metal clips as aforesaid but with the ends of the wires bent at right
angles or backwardly so as to engage with the clips and thus enable the usual
knots to be dispensed with.
odil
0
1000
Improvements in Spring Seats and Mattresses and in Springs
therefor.
I, WALTER PERRINS, of 79, Hampton Road, Birchfields, Birmingham, in the
County of Warwick, Engineer, do hereby declare the nature of this invention
Price S71

page_text: and in what manner the same is to be performed, to be particularly described and
ascertained in and by the following statement:-
This invention has reference to those spring seats and mattresses in which the
springs are what are known as sofa springs made of wire coiled into a spiral formi
enlarged at the top and bottom with a smaller waist. These springs are arranged
side by side, and at their enlarged tops and bottoms are fixed together by metal
clips or by other means and are also similarly fixed to two wire frames which
surround the outside edges of the springs at top and bottom. Heretofore it has
been customary for the wire in each spring at the termination of the last coil to
be bent round the preceding coil thus forming knots or protuberances which are
objectionable as they are liable to wear the material of the seat or mattress-which
rests upon them.
I will describe my invention by referring to the accompanying drawings on
which Fig. 1 is a side elevation and Fig. 2 is a plan of the spring portions and
frame of a spring seat constructed according to this invention; Fig. 3 is an
elevation partly in section and Fig. 4 is a plan of one of the spiral springs of the
said seat drawn on a large scale; Fig. 5 is an elevation partly in section and
Fig. 6 is a plan of a modified form of the said springs and Fig. 7 shews portions
of two of the said springs fixed together.
The same letters of reference indicate the same parts in all the figures..
The spring seat represented by Figs. 1 and 2 consists of six sofa springs A¹ A²
A A A A which are arranged side by side and respectively fixed together by
the usual metal clips B and are also by the same kinds of clips B2 fixed at the
top to the usual metal frame C and at the bottom fixed by similar clips B3 to the
usual metal frame D.
According to one part of my invention (illustrated by Figs. 1, 2, 3 and 4) instead
of forming the last or larger coil a¹ of each of the wire springs into a knot or
protuberance I continue the said wire round and round at a² as a flat spiral
towards the centre of the spring at the top thereof (and also at the bottom of the
spring if necessary) thus filling up the top of the spring by a flat surface (see
Fig. 3) instead of leaving the tops of the springs open as heretofore. The
bottoms of the springs may if desired be similarly filled up by coiling the wire
round and round in a flat spiral but in most cases this is unnecessary and the
bottom coil of the spring is by preference finished by a knot in the usual
manner shewn in Fig. 3. When the springs are made up into a seat frame as above
described and represented by Figs. 1 and 2 the tops a¹² of the springs A¹ A³
A3 A4 A5 A6 will form a level surface along the whole seat instead of the centre
of each spring being hollow as heretofore. I thus provide an even springy
surface to the spring seat without knobs or protuberances so that the seat will
culy need a very thin bed or loose covering to be laid upon it.
My invention is applied to spring mattresses of the kind above referred to
similarly as above described with reference to a spring seat.
Instead of continuing the wire at the ends of the spring in the form of a flat
spiral 2 as above described and illustrated by Figs. 1, 2, 3 and 4, I may secure
the end of the last coil to the preceding coil a¹ by a metal clip B₁ as afore-
said but with the extreme end of the wire bent at right angles or backwardly
as in Figs. 6 and 7 so as to engage with the clip B' and prevent the wire pulling
out of the same and thus enable the usual knots such as in Fig. 3 to be dis-
pensed with. Fig. 7 shews the top part of the spring A7 constructed as repre-
sented in Figs. 5 and 6 secured to the top coil of another similar spring A8 by
the usual clip B¹.
Having now particularly described and ascertained the nature of my said
invention and in what manner the same is to be performed, I declare that what
I claim is:-
1. The improved coiled wire spring for spring seats and mattresses having the
top or both the top and bottom of the spring filled un with a flat enringy cunfurn

page_text: formed by coiling the wire round into a flat spiral substantially as described and
illustrated by Figs. 1, 2, 3 and 4.
2. The improved spring seat or mattress composed of coiled wire springs such
as A arranged side by side and secured together and to surrounding wire frames
at the top and bottom by sheet metal clips such as B1 B2 B3 each of said springs
having the top or both the top and bottom of the spring filled up with a flat
springy surface formed by coiling the wire round into a flat spiral substantially
as described and illustrated by Figs. 1, 2, 3 and 4.
3. The improved coiled wire spring for spring seats and mattresses having one
or both ends of the wire coil secured to the preceding coil by metal clips B' in
combination with the end of the wire being bent at right angles or backwardly
at a to engage with said clip substantially as described and illustrated by
Figs. 5, 6 and 7.
4. A spring seat or mattress composed of coiled wire springs arranged side by
side and secured together and to surrounding wire frames at the top and bottom
by sheet metal clips such as B1 B2 B3 each of said springs having one or both ends
of the wire coil secured to the preceding coil by said metal clips in combination
with the end of the wire being bent at right angles or backwardly at a to engage.
with said clip, substantially as described and illustrated by Figs. 5, 6 and 7.
Dated this 30th day of May 1899.
CHARLES BOSWORTH KETLEY,
Agent for the Applicant.