An Improved Type of Helical Spring, for use in Spring Mattresses or Spring Bottoms of Bedsteads, Cots, Ships' Berths, and Chair Bedsteads and Folding Bedsteads.
Year: 1897

page_text: Date of Application, 1st Dec., 1897
Complete Specification Left, 30th July, 1898-Accepted, 17th Sept., 1898
PROVISIONAL SPECIFICATION.
An Improved Type of Helical Spring, for use in Spring Mattresses or
Spring Bottoms of Bedsteads, Cots, Ships' Berths, and Chair
Bedsteads and Folding Bedsteads.
ALFRED LAKIN, of 66, Kendal Road, Birmingham, Manufacturer's Manager, and
FREDERICK CHARLES RANDALL, of 152, St. Pauls Road, Birmingham, Commercial
Traveller, do hereby declare the nature of this invention to be as follows:-
-:
The ordinary type of helical spring used in connexion with spring mattresses
or spring bottoms, for bedsteads, cots, ships berths and chair or folding bedsteads,
is attached by loops formed from the two extremities of the coil, the elasticity
being derived from the expansion of the helical coil.
The spring forming the subject of this application, is manufactured with a
more open coil than is the case with the ordinary spring, and derives its elasticity
from the compression of the helical coil. This is effected by bending two pieces
of wire in the shape of a letter U, and by the insertion of the same into the interior
or core of the helical coil, in reverse directions; so that the loop of each protrudes
from one end of the coil, and the two straight terminals from the opposite ends;
these straight terminals are then bent over the outer part of the coil, so that they
cannot be withdrawn; and the spring is then ready for attachment by means of
the shaped loops, which are left protruding from each extremity of the coil.
Dated this 30th day of November 1897.
ALFRED LAKIN.
FREDERICK CHARLES RANDALL.
An Improved Type of Helical Spring, for use in Spring Mattresses or
Spring Bottoms of Bedsteads, Cots, Ships' Berths, and Chair
Bedsteads and Folding Bedsteads.
We, ALFRED LAKIN, of 71, Dearman Road, Sparkbrook, Birmingham, late of
66, Kendal Road, Birmingham, Manufacturer's Manager, and FREDERICK
CHARLES RANDALL, of 374, Rotton Park Road, Birmingham, late of 152, St. Paul's
Road, Birmingham, Commercial Traveller, 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 ordinary type of helical spring used in connection with spring mattresses
or spring bottoms for bedsteads, cots, ships berths and chair or folding bedsteads,

page_text: is attached by loops formed from the two extremities of the coil, the elasticity
being derived from the expansion of the helical coil.
The spring forming the subject of this application is manufactured with a more
open coil than is the case with the ordinary spring, and derives its elasticity from
the compression of the helical coil.
In order to more clearly explain this our invention we have appended hereunto
an illustrative drawing upon which are figures and numbers of reference, similar
numbers referring in the several figures to the same thing or part.
Fig. 1, is what may be termed a plan view of this our invention.
Fig. 2, similarly shows a side view of the invention.
Fig. 3, is a detached view of one of the U shaped attachment wires.
6, is the coil spring, whose coils are comparatively wide apart to allow of com-
pression. 7, 7, are attachment wires which are doubled and of a width to readily
pass through the interior of the coil spring 6, so that their ends 8, 82, protrude
(or thereabouts) through the ends of the spring. These wires are placed in reverse
directions. The ends of these wires are now bent around the last coil (at each end)
of the spring as seen at 9; hence when the ends, 8, 8, are respectively attached to
the mattress &c., their outward pull causes a compressive effect upon the coil 6.
If desired we may vary the shape of the attachment ends of the wires so that they
may be of the loop shape as seen at 8, or such ends may be made into the hook
shape as seen at 8ª.
By these means we provide a more powerful spring than those now in use which is
also stronger at its point of attachment by reason of having the doubled loop at
the end.
Having now particularly described and ascertained the nature of this our said
invention, and in what manner the same is to be performed, we declare that what
we claim is; :-
1. The improved helical spring comprising the coil 6, with the attachment
wires 7, 7, secured thereto in reverse directions with connection ends 8, 8ª, sub-
stantially as set forth and shown and for the purposes specified.
DaLen THIS TH day of mx LXIX
DaLeo THIS ZYLh day of July LXIX
CHARLES T. POWELL,
Applicants' Agent 12 Chorry Streat Dimmingham
CHARLES T. POWELL,
Applicants' Agent 12 Cherry Street, Birmingham.
CHARLES T. POWELL,
Applicants' Agent, 12 Cherry Street, Birmingham.