Improvements in Woven Wire Mattresses and Bedstead Bottoms.
Year: 1891

page_text: Date of Application, 17th Oct., 1891-Accepted, 5th Dec., 1891
COMPLETE SPECIFICATION.
Improvements in Woven Wire Mattresses and Bedstead Bottoms.
I FRED ROWCLIFFE of Levenshulme, in the County of Lancaster Manufacturer,
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:-
The object of this invention is to produce by very simple means a woven wire
mattress or bedstead bottom the web of which is made more rigid at certain parts,
say for example at the sides or edges, and at the centre; and the invention consists
in interweaving or combining with the web of such mattress or bedstead bottom, of
a stripe or stripes formed of coils with less wire in their lengths than the coils
forming the main part of the web.
This can be accomplished either by increasing the pitch of the coils, or by
reducing the diameter thereof, at those parts which are required to be more rigid,
and my invention will be readily understood on reference to the annexed sheet of
drawings, on which
Fig. 1 shows how I may combine with the ordinary web of woven wire at the part
or parts which are required to be more rigid, a stripe or stripes of increased pitch;
and in order to render the said stripe or stripes strong as well as rigid I prefer to
form it or them of a number of wires together as seen, on the diagram in which the
coils a form the main part of the web, and those marked the stiffening stripe,
shown at one edge of the web.
The pitch of the coils a in Fig. 1 is one half of that of the coils b, but this
proportion may be varied to any degree suitable for the interweaving of the
different coils. Also it is not necessary that the stiffening stripes should be all of
equal pitch in the same web, so long as their pitch is greater than that of the
coils a, and suitably proportioned for interweaving.
Fig. 2 shows how the coils b may be reduced in diameter which will have a
similar effect to increasing their pitch, that is to say, that in a given length of web
the length of wire in the coils of increased pitch or reduced diameter will be less
than the length of wire in the main part of the web, and it is found that such shorter
coils are more rigid than the others.
The insertion therefore of a stripe or stripes of these shorter coils at any desired
part or parts will render the mattress or bedstead bottom more rigid at such part
or parts.
Having now particularly described and ascertained the nature of my said inven-
tion, and in what manner the same is to be performed 1 declare that what I
claim is :-
1. The combination or interweaving in the web of a woven wire mattress or
bedstead bottom of a stripe or stripes formed of coils with less wire in their length
substantially as and for the purposes hereinbefore described.
2. The combination or interweaving in the web, of a woven wire mattress or
bedstead bottom, of a stripe or stripes formed of coils of wire of increased pitch,
substantially as and for the purpose hereinbefore described.
3. The combination or interweaving in the web of a woven wire mattress or
bedstead bottom, of a stripe or stripes formed of coils of reduced diameter
substantially as and for the purpose hereinbefore described.
Dated this 16th day of October 1891.
GEO. DAVIES & SON,
4, St. Ann's Square, Agents for the Applicant.