Improvements in Spring Mattresses.
Year: 1898

page_text: Date of Application, 28th Oct., 1898-Accepted, 14th Jan.,
1899
COMPLETE SPECIFICATION.
Improvements in Spring Mattresses.
I, CARL ZIENAU, of 5, Lemsdorferweg, Magdeburg-Sudenburg, in the Kingdom of
Prussia, German Empire, Turner, 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:--
My invention relates to improvements in spring mattresses, and has for its
objects a method of arranging the said springs in order that the tension of any
one of them may be regulated, in combination with (in certain cases) a method
of construction by means of which the head portion of the said mattress may be
raised to any desired angle for the convenience children and invalid.
In the accompanying drawings I have chosen to illustrate the application of
my invention in connection with a childs crib or cot or a four post bedstead
adapted to receive the same, and in which Fig. 1 is a vertical longitudinal section,
while Fig. 2 is an enlarged end view of such a mattress the latter also partly in
section.
In carrying my invention into effect I provide of wood, or other suitable
material, a frame or case, the side portions of which A are connected to each
other by any number of transverse or lateral brace-pieces B, the said brace-pieces
having formed therein any number of holes, each of which carries a bolt C, sur-
rounded by a tapered spiral spring D of the usual formation, and carrying at
their upper ends preferably rectangular wood or other plates E, the lower ends
of the said bolts having screw threads formed thereon each receive a nut or nuts F,
the more or less screwing home of which serves to regulate the tension of the
springs D, and adjust the positions of the plates E, which normally are such as
to be in strict alignment with each other as at Fig. 1, but may be otherwise
arranged if desired to accommodate invalids and others.
The said mattress may be of any dimensions to suit the bedstead cot or crib
upon which it is to be placed, and when such bedstead cot or crib has head and foot
boards such as G and H, the said side pieces of the mattress may be formed in
two parts A and A¹ as shewn, hinged or otherwise pivotally connected to each
other at a point J, the free end of the portions A¹ being provided with a brace
piece, or the foremost piece 13¹ of the cross pieces B arranged to form the equiva-
lent of such a brace piece, and carry a dipping rod or plate K so contrived as to be
caused to make contact with any one of a series of ratchet teeth, or horizontal
surfaces L placed one above the other upon the inner surface of the head piece H
of the bedstead, cot or crib, which provides that the said head portion A¹ may
be raised to any desired angle and be supported at that angle by K engaging
with L as shewn in Fig. 1.
From the foregoing it will be understood that the plates E may receive a wool-
mattress or bed or both in the usual way, the weight whereof would of course com-
press the springs D and lower the plates E with their bolts C, in which case the
latter would pass downward through the holes in the plates B, and in order that
such movements of C may not displace them from a true vertical position, each

page_text: of the said holes in B may be provided with a boss M through which also the
said bolts may pass.
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:--
The improved spring mattress herein described and shewn, in which the
springs are retained between plates such as B and E by the means of through
bolts such as D, the tension of the said springs being adjusted by nuts F screwed
upon the said bolts, while the plates B rest upon or are connected to side pieces
such as A, with or without a section such as A¹, with means for adjusting the
angle of the latter substantially as and for the purposes herein set forth and
shewn.
Dated this 28th day of October 1898.
GEO. THOS. HYDE,
1, Broad Street Buildings, London, E.C.,
Agent for the Applicant.