Improvements in or relating to Mattresses.
Year: 1894

page_text: Date of Application, 1st Feb., 1894-Accepted, 21st Apr., 1894
COMPLETE SPECIFICATION.
Improvements in or relating to Mattresses.
A communication from EDUARD FRANKENBERG, Manufacturer, of Hanover,
Germany.
I, ALFRED JULIUS BOULT of 323 High Holborn in the County of Middlesex,
Chartered Patent Agent 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 mattress illustrated in Sheets I and II of the accompanying drawings, in
various forms of application, is capable of being taken asunder, in all its parts, so
that it occupies an extremely limited space when packed for transport, and any
damaged part can be taken out and replaced with little trouble, even by an
inexperienced or unskilled person.
Sheet I Fig. 1 shows a mattress consisting of a wooden frame covered with hoop
iron bands & strained tight over it, and supported by coiled springs f¹ f³ (Fig. 2)
and crossed by similar bands b'.
The frame-pieces are halved or dove-tailed together and in the corners
provided with eyes or lugs o one over the other, engaging and held together by
splints or cottars, or alternatively fastened by hooks or any other convenient and
suitable means.
On the longitudinal and cross pieces of the frame at regular intervals, are
hooked the rods s and longitudinal and transverse, whereof the former are
provided with slots = (Fig. 3) for carrying of the spiral springs f¹³ of which the
outer extremities are slit to receive the wire buttons (Fig. 6) rivetted on the
hoop-iron bands.
The spiral springs are placed with their outer ends directed towards the centre
line of the mattress (Fig. 2) whereby any lateral displacement of the bands bis
prevented. Four spiral springs, varying in diameter are employed for each boop-
iron band, in order to obtain a rounded surface from the centre to the sides; only
three sizes riz. fff of these spiral springs are shown in the sectional drawings.
Instead of the rods s s¹ round iron or strained wire can also be used.
The transverse iron bands b at the points where the crossings occur, may be
bent and pass underneath the longitudinal bands, so as to form a recess for the
reception of the latter whereby a smooth and even surface is obtained (Fig. 7).
On the outer sides of the frame-pieces (Fig. 4) the slotted metal plates care
screwed into suitable recesses hollowed out of the wood; their slots are intended
to receive the buttons k¹ rivetted on the ends of the hoop-iron bands.
If steel bands are used instead of iron bands, nothing more is required to
fix them than to use wood screws to attach their ends. Fig. 5 shows eyes h¹
which are let into recesses in the frame at convenient places and serve to strain
tightly the cover by means of the hooks h secured to the borders of the latter.
A mattress based upon the same principles is shown in plan Fig. 8 (Sheet II)
and in Figs. 9 and 10, respectively in longitudinal and transverse section. Upon
the longitudinal frame-pieces and are fixed the bent springs f turned inwards
and joined together by the transverse steel bands 62 which are rivetted thereto.
For the purpose of stiffening the latter four or more double bands or belts g g'
are laid longitudinally across the steel bands, above and below the latter and
secured together by headed splints or cottars p.
These double bands may, as shown at the head-piece be secured to the frame
by nails or screws; or they are held fast by screws between two iron bars,

page_text: supported by bearers t as shown at the foot-end in Fig. 9, and in Fig. 11 or fixed
by springs.
6
Instead of the bent C-springs f" any other form of bent spring may be used at
pleasure such e.g. as the S-spring shown in Fig. 12 whereof the flexibility is so
great that one or more rows of helical springs (Figs. 12 and 13) must be fixed
between flat iron bands, wood-laths s² or in any other suitable way, to assist in
supporting the cross bands &³.
Instead of the double-bands g g' there yet remains the employment of steel
bands (Fig. 14) as shown, which may be strained by bent springs on both sides
or e.g. at the head end fixed with such a spring and at the foot-end made fast to a
rotatable cylinder w which by means of ratchet wheel and pawl can be tightened
up whereby a uniform straining of the bands is obtained. All the parts of this
mattress, last described can also be taken asunder.
Having now particularly described and ascertained the nature of the said inven-
tion as communicated to me by my foreign correspondent and in what manner the
same is to be performed, I declare that what I claim is ;-
1. A mattress that can be taken asunder in all its parts with spiral springs f¹ƒ³
hung on longitudinal bars s elc. and secured to the transverse bands by wire-
buttons & and longitudinal bands ¹ crossing the bands b and at the same time the
hoop-iron bands 6 and 6' can be fitted with buttons running in slot-plates
substantially as described and illustrated in the accompanying drawings.
2. A mattress that can be taken asunder, in all its parts of the kind described
in Claim 1 wherein the C-springs used are screwed fast on the two longitudinal
frame-pieces and and for stiffening the steel bands 62 belts 9 g' are arranged
with their ends alternatively nailed or screwed fast to the head or foot pieces of the
frame such belts being alternatively held fast between iron bands substantially as
described and illustrated in the accompanying drawings.
3. A mattress that can be taken asunder of the kind described in Claim I
wherein the straining of the bands is effected by the use of S-springs f and the
said bands 63 may be supported by cylindrically coiled springs & substantially as
described and illustrated in the accompanying drawings.
4. The arrangement in the mattress described in the preceding claims of longi-
tudinal bands strained at both ends by bent springs or fixed at one end on a bent
spring and at the other end in such manner as to be capable of being strained
tight substantially as described and illustrated in the accompanying drawings.
5. The combination and arrangement of parts constituting the complete mattress
substantially as described and illustrated in the accompanying drawings.
Dated this 1st day of February 1894.
W. P. THOMPSON & BOULT,
Of London, Liverpool, Nottingham, and Manchester,
Agents for the Applicant.