Improved Apparatus to be employed in the Coiling of Wire for Helical Springs, as used in the Manufacture of Mattresses and other analogous purposes.
Year: 1893

page_text: Date of Application, 16th Nov., 1893
Complete Specification Left, 16th Aug., 1894-Accepted, 16th Nov., 1894
PROVISIONAL SPECIFICATION.
Improved Apparatus to be employed in the Coiling of Wire for
Helical Springs, as used in the Manufacture of Mattresses and
other analogous purposes.
We EDWARD SAMUEL BOND and GEORGE HENRY COOPER of the Crown
Works Booth Street Handsworth Birmingham, Engineers and Machinists do hereby
declare the nature of this our said invention to be as follows:-
Our invention for "improved apparatus to be employed in the coiling of wire
for helical springs for mattresses and other analogous purposes "will be understood
by the following description.
We provide a guide for the wire which is to be formed or coiled into a helix,
this guide is substantially a straight tube of which the bore slightly exceeds the
diameter of the wire in order that the wire may pass easily through it.
The length
of this tubular guide is according to our purpose.
The wire is pushed through this tubular guide by appropriate mechanism
which does not form part of our present invention.
Opposite to that end of the tubular at which the wire emerges, and at a short
distance say about five diameters of the wire from it. We provide a metallic
block having a "former" fixed thereon. The upper surface of the block is level
with the underside of the wire as it emerges from the guide. The "former"
consists of an upright peg of circular section which passes vertically through the
before mentioned block and may be adjusted therein. The former' is split and
one side of it projects a determined height above the surface of the metallic
block. By the side of this projecting part of the "former is an upright pin or
peg smaller in diameter than the lower part of the "former" and which also
constitutes a part of the "former."
"
"
We provide a metallic cap which fits on the before mentioned block and is held
down by a screw or screws. On the underside of this cap and opposite to the
tubular end of the guide whence the wire emerges. We make a groove which
leads the wire to the former, this groove is not concentric with the former" but
placed so that the outer side of the groove leads to the outer side of the former.
In the cap and above the "former" which is fixed in the block below, we provide
a hole through which the helix of wire passes after it has been formed.
$6
"
The wire is pushed through the guide, and through the groove on the underside
of the cap. It then finds no means of escape except by passing around the upright
peg which constitutes the upper part of the former this causes the wire to
assume the shape of a helical coil, it passes this through the hole provided for
that purpose in the cap which is above the "former."
The degree of closeness with which the helix is formed depends upon the height
to which the projecting side of the "former is adjusted and stands above the
surface of the block.
Although for convenience in this description we have used such terms, as upper
and lower, it is to be understood that the apparatus constituting our invention will
work, equally well, in any position.
Dated 16th November 1893.
THOS. KENDRICK,
Victoria Chambers, Martineau Street, Birmingham,
Agent for Applicants.

page_text: COMPLETE SPECIFICATION.
Improved Apparatus to be employed in the Colling of Wire for
Helical Springs, as used in the Manufacture of Mattresses and
other analogous purposes.
We, EDWARD SAMUEL BOND, and GEORGE HENRY COOPER of the Crown
Works, Booth Street, Handsworth, Birmingham, Engineers and Machinists, do
hereby declare the nature of our said invention and in what manner the
same is to be performed, to be particularly described and ascertained in and by
the following statement :-
The apparatus we employ according to our invention in the coiling of wire for
helical springs such as is used in the manufacture of mattresses, consists sub-
stantially of a tubular guide through which the wire to be coiled is passed being
forced through by appropriate mechanism, somewhat as hitherto, but opposite to
that end of the tubular guide, and where the wire emerges, we arrange a metallic
block having a "former" fixed thereon. This "former" consists of an upright
peg of circular section which passes vertically through the before mentioned block
and may be adjusted therein. The "former" is split and one side of it projects
a determined height above the surface of the metallic block. By the side of this
projecting part of the "former" is an upright pin smaller in diameter than the
lower part of the former.
66
A cap fits on the metallic block and is held by screws, the underside of this cap
is grooved which leads the wire to the former" but is not concentric with it, but
is placed so that the outer side of the groove leads to the outer side of the
❝ former."
In the cap and above the "former" which is fixed on the block below we provide
a hole through which the helix of wire passes after it has been formed when the
wire is forced through the guide, and groove, it passes around the upright peg, as
there is no means of escape, and takes the helical coil. The closeness of the helix
may be determined by the height and adjustment of the "former."
And in order that our invention may be more clearly understood we shall now
proceed to describe it by the aid of the accompanying sheet of drawings, the same
letters of reference denote the same parts in every figure in which they occur.
Fig. 1 shows an elevation of the apparatus complete.
Fig. 2 shows a plan of the same.
Fig. 3 shows an end view of the guide.
Fig. 4 shows a section on line A. B. see Fig. 1.
Fig. 5 shows the "former" in three separate views, namely two elevations,
and an end view, in this figure the "former" is shewn complete but detached from
the rest of the apparatus.
Fig. 6 shows the larger part or body of the "former" in two views.
Fig. 7 shows the detached part of the "former" in two views.
Fig. 8 shows a modification of the "former" in two views elevation.
"
°
Fig. 9 shows the body of the "former as modified in elevation and in end
view.
Fig. 10 shows the smaller part of the "former " as modified in elevation and
end view.
a is a tube with a lug a¹ at one end of which it is secured to a block b, c and ¿¹
form a cylinder split in two halves, inserted into the tube a. On the inner face
of c, is a groove which when in position with the face of c¹ as shown in Fig. 3
form a tubular guide for the wire d, which is smaller in cross sectional area than
the groove and so passes easily through it.
The wire d is forced through the tubular groove or guide
of the arrow Fig. 1 by external means. It emerges at
in the direction
on the face of the

page_text: block b, and passes into a cylindrical recess el in the cap e. The recess is not
concentric with the wire d, but is placed so that the groove leads the wire to the
outer side of it as shown in Fig. 1.
f
A former "f" is placed in the recess concentrically with it. This " former "
consists of a peg of circular cross section but split, the smaller part being hereafter
called the detached part. The upper part of the "former" at is smaller in
diameter than the recess e', there is thus an annular space between the inner side
of the recess and the upper part of the former f¹.
When the wire d is pushed through the grooved guide c³ into the recess, its
end passes around the former as soon as it has nearly completed one convolution
its under surface is met by a bevilled end f' on the detached part 3 of the
"former "f. This bevelled end causes the wire to assume the figure of an helix,
and it then passes out of the apparatus in the direction of the vertical arrow in
Fig. 2, the action being continuous as long as wire is forced through the guide
into the recess e. The helix may be made more or less open by varying the
position of the piece f* and the shape of the bevilled end f'. Means of retaining
these parts in position when adjusted are provided by a set screw g.
The modification of the "former" as shown in Figs. 8, 9, and 10, consists in
making the larger part of the "former" with a groove f* in which fits the
detached part with the bevilled end f*.
The two parts when put together fill the circular hole in the apparatus in the
same manner as the parts of the “former” in Figs. 1, 2, 3, and they are secured
when adjusted in a similar manner.
The former" is merely made in two portions for the sake of adjustment. For
certain purposes it may be made in one piece.
We do not limit ourselves to the exact form and configuration of parts as
shown on the drawings, as we may modify the same without departing from our
said invention.
Having now particularly described and ascertained the nature of our said inven-
tion, and in what manner the same is to be performed, we declare that what we
claim is :-
In "Improved apparatus to be employed in the coiling of wire for helical
springs, as used in the manufacture of mattresses and other analogous purposes."
1st. The combination the tubular guide a, with c, and c', a cylinder split in two
halves, inserted in a, secured to the block b, by a', the inner faces of c, grooved
as c, forming the guide a, to receive the wire, through which the wire emerges,
and el in the cap e, into which it passes, substantially as herein before described and
illustrated by the drawings.
2nd. The combination, the " former" f, with fl and f' on detached part f*
substantially as herein before described and illustrated by the drawings.
3rd. The combination the "former" with groove f₁ for receiving f' with f*
substantially as herein before described and illustrated by the drawings.
4th. The general construction, combination and arrangement of parts, substan-
tially as described in the foregoing Specification and illustrated by the accompanying
drawings.
Dated 16th August 1894.
THOS. KENDRICK,
3, Cherry Street, Birmingham, Agent.