Improved Machinery for Manufacturing Helical Springs.
Year: 1891

page_text: Date of Application, 18th Dec., 1891
Complete Specification Left, 19th Sept., 1892-Accepted, 17th Dec., 1892
PROVISIONAL SPECIFICATION.
Improved Machinery for Manufacturing Helical Springs.
I, JOSEPH CHARLEMAGNE NAUDIN, Junior, of 9 and 11, Rue des Envierges
Paris in the Republic of France Manufacturer, do hereby declare the nature of this
invention to be as follows:-
This invention consists in improved machinery for manufacturing helical springs.
On a suitable frame is a rotary horizontal table carrying a bobbin of the wire to be
made into a spring and a guiding arm by which the wire is wound upon a steel
mandril supported on a bracket passing through the centre of the table. The
table is revolved by gear wheels from a vertical shaft provided with fast and loose
pulleys. The helically wound wire passes upward on the mandril as it is wound.
Two jars press with adjustable pressure on the spring as it leaves the end of the
mandril and thus compress the spring upon the mandril so that it does not leave
the latter too quickly. The coiled spring is wound upon a reel above the
machine.
Dated this 18th day of December 1891.
HERBERT & Co.,
Agents to Applicant.
COMPLETE SPECIFICATION.
Improved Machinery for Manufacturing Helical Springs.
I, JOSEPH CHARLEMAGNE NAUDIN, Junior, of 9 and 11 Rue des Envierges,
Paris, in the Republic of France, Manufacturer, 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 :-
This invention consists in improved machinery for manufacturing helical springs
and is applicable to any kind of metallic wire, soft or hard, and of any size of
section, and for the manufacture of coiled springs of any length with close coils or
coils spaced equally or unequally, according to requirements and without soldering
or joining. In other words it consists in machinery for rolling up metal into the
form of coils and by its rapidity and economy of production it is useful in. many
different manufactures.
The improved machine is represented in the accompanying drawing in side
elevation.
On a suitable frame A is mounted on a puppet A2 a rotary sleeve D carrying at
its upper end a table E and at or near its lower end a pinion or spur wheel c. The
axis of the sleeve and table is vertical and this part of the machine is set in rotation
by the spur wheel b in the shaft meshing with the spur wheel c, the said shaft h
being likewise driven by the spur wheel a on the shaft B, meshing with the wheel b
aforesaid or else by a special pair of spurwheels a¹ b. Fast and loose pulleys C
on the shaft C¹ drive the shaft B through bevelled gear C³. On the table E is a
bracket S carrying at its upper inwardly bent end an upright mandril G the axis
of which lies in the same line as the axis of the table E. This mandril, which
rotates with the bracket S may be solid or hollow, the latter in order to introduce
any desired core within the coils of the wire.
Fixed on the table E are likewise a bracket F¹ to receive a bobbin F of the
wire to be coiled and a bracket or finger H forming a guiding arm for the wire as
it winds on the spindle or mandril G.

page_text: The coiled wire passes up through a socket in the arm L where two hinged
jaws K K are provided with a set screw for tightening them together so that they
may be made to press more or less powerfully on the coils as the coiled wire is
gradually forced up off the mandril G by the succeeding coils; the coiled wire
passes further through the hollow stationary socket on which revolves the frame A¹
on which the roller M is mounted and is wound on this roller. The frame A' is
revolved in the contrary direction to the table E by a crossed band N gearing the
wheel N¹ on the frame A¹ with the pulley wheel N on the shaft B.
motions of the table E and the frame A¹ causes the coiling of the wire and the
pressure of the jaws K K causes the coils to be more or less close together. These
jaws revolve with the coils. O is a cord passing round a pulley O' on the drum M
and round a fixed pulley O2 on the stationary socket on which the frame A'
revolves.
The counter
Where the coiled wire is to have a certain distance between the coils this is
effected by the following mechanism. The mandril G is surrounded by a sliding
sleeve or ring e carried by an arm z which revolves with the table E but may be
moved up and down independently thereof. This up and down movement is
effected by the rod I to which a back and forth motion is given by the pin I¹ on
the rotary disk J driven by the bevelled gear. g from the shaft h.
.2
The pin is mounted in a radial slot in the disk J and its distance from the
centre will equal half the displacement of the rod and therefore of. the arm and
ring e. The ring e gives repeated thrusts to the coils, the gear as shown will drive
the disk J at double the speed of the table E and so give two thrusts of the ring e
on each coil as it is formed. The jaws K K being loosened, each coil as it is
made is thrust upward by the ring e and consequently the coils are more or less
widely spaced according to the adjustment of the pin 1 more or less far from the
axial centre of the disk J.
This machine may be actuated by hand in place of by power by suitably arranging
the necessary mechanism for revolving the shaft B.
The mandril is preferably hollow so that materials may be fed through it to lie
inside the spring or coils when formed. This is convenient for instance for tele-
phonic receivers to introduce copper wires inside the spirals, also in many articles
for use in millinery, and articles of dress, but for ordinary springs a solid mandril
may be used just as well as a hollow mandril.
This machine enables springs or coiled wires to be easily made of any length and
with great regularity.
Having now particularly described and ascertained the nature of the said inven-
tion and in what manner the same is to be performed, 1 declare that what I
claim is -
:-
The machine for production of coiled wires or springs comprising a spindle with
hollow or solid mandril and ring thereon with auxiliary mechanism, for regulating
the coiling of the wire thereon, and with jaws for retaining the coiled wire in the
manner described.
HERBERT & Co.,
18, Buckingham Street, Strand, London, W.C., Agents to Applicant.