Improvements in Spring-mattresses.
Year: 1897

page_text: Date of Application, 19th Mar., 1897-Accepted, 5th June, 1897
Improvements in Spring-mattresses.
I, BRUNO AUGUST GRIMM of Oelsnitz in Voigtland, in the German Empire,
Professor of Medicine, 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 an improved spring mattress so constructed and arranged
that while adaptable for ordinary domestic use may be found particularly useful for
invalids at home or and in hospitals, infirmaries and the like.
'
In order that my invention and the particular construction of the same and its
adaptability for the purpose stated may be fully understood, I have hereunto appended
a sheet of drawings, of which
Fig. 1 is a plan view, while Fig. 2 is a horizontal vertical section of the same.
My said improved mattress consists of a preferably wooden frame A, the head
portion of which B is adapted to be raised, and has a hinged or pivotted connection
at C. The said frame has connected thereto any desired number of longitudinal taut
steel or other wires D, having at suitable intervals in their lengths undulations or
dips E, and nearly in line with the junctions C of the frame A the said wires are
constructed to form spiral springs F, for purposes hereinafter explained. The said
wires D are supported at suitable intervals in their lengths by pairs of cross wires G,
the ends of which are constructed to form spiral springs H and are firmly connected
to the frame A. Immediately under the wires G are similarly disposed wires J and J',
preferably without spiral springs such as H, the ends of which are connected to
metallic plates or frames K and K' respectively (having undulations or dips E¹) to
which are attached metallic uprights L and L', adapted to slide vertically in
guides M and M' äxed to the frame A and head-piece B respectively the position
of the uprights in their guides being adjustable by the means of thumb or set
screws 0.
At the points of junction of each pair of the wires D with the wires G, is fixed
by any suitable means the upper ends of vertical spiral springs P and P¹ the lower
ends of which are connected in like manner with the cross wires J and J' respectively,
the tension of which is regulated by the plates L and L'. The head portion B of
the frame A with the metallic plates E¹ and the springs P connected thereto, is
adapted to be raised to any desired angle by the means of curved plates R passing
through guides S, and provided with ratchet teeth T adapted to engage with the
said guides and hold B in the desired position, the spiral springs F in the wires D
permitting these to rise and fall with the said head portion as shewn in Fig. 2, the
said springs thereby operating as a hinge for the said wires.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed I declare that what I
claim is :-
1st. In a spring mattress, the combination of a frame arranged to carry an upper
tier of longitudinal and transverse wires having spiral springs formed therein and
thereof, and a lower tier of transverse wires with or without spiral springs, the said
lower tier being attached to metallic plates or frames, adjustably connected to the
main frame for adjusting the tension of vertical spiral springs placed between, and
connected to, the said upper and lower tiers of wires, the head portion of the said

page_text: mattress being arranged to be raised to any desired angle, with means for effecting
and maintaining the same substantially as herein described and shewn.
2nd. In a spring mattress, the combination of a wooden frame such as A, having
an adjustable head portion B, the said frame carrying an upper tier of longitudinal
undulatory spring wires such as D, supported by transverse spring wires such as G, and
a lower tier of transverse wires J and J¹ connected to metallic undulatory plates K
and K' respectively the said plates having uprights such as L and L adapted to
slide vertically in guide plates M and M' connected to A and B and adjusted by the
means of thumb or set screws O, for regulating the tension of vertical springs such
as P and P¹ placed between and connected to the wires forming the said upper and
lower tiers, with means such as ratcheted curved plates R passing through guides S,
for adjustably raising and holding at any desired angle the said head portion B,
substantially as and for the purposes herein described and shewn by the accompanying
.drawings.
Dated this 10th day of Mau 1907
GEO. THOS. HYDE,
1 Broad Street Buildings, London, E.C., Agent, for the Applicant.