Year: 1889

page_text: Date of Application, 27th Aug., 1839-Accepted, 14th Dec., 1889
Referring to the drawings:-
and
The flat or ribbon-iron a first enters the machine between the rollers
ee (Figures 1, 2, 3, 4, and 5), by which the profile is given to the ribbon. This
part of the machine can if desired be separated from the second part, the rolling
section of the machine.
Then the iron arrives guided by two discs ss to the third and fourth pairs of
rollers D D and E E', by which, firstly, the flanks (Figure 6) and then the ridge
(Figure 7) are stretched, thus forming a rolled, conical hoop.
The bearings 00 for the upper rollers are arranged for sliding in a vertical
direction in the sides of the framing. They are pressed upwards by elastic
plates pp made of rubber or similar material, whilst the principal impression is
given by the pin d, the lever and the springs f, and can be regulated by the
screws S S. By this elastic pressure a very uniform stretching and rolling of the
hoop is obtained. The upper roller D of the first pair is also in its axial direction
placed in a manner to be elastically pressed by the pin d, lever h screw S¹ and
spring (Figure 4).
Motion is imparted to the rollers in such manner, that each roller may receive its
motion separately, for instance by means of a belt pulley attached to the axle of
each so that toothed wheels, by which much power is consumed and friction caused,
may be avoided.
The flat-iron coming from the rollers D D¹, takes an oblique direction in
consequence of the stretching operation. The axes of the two pairs of rollers are
therefore not parallel to each other but are set at an acute angle (Figure 4) so that
the second pair of rollers may receive the iron in the same oblique direction by which
it comes from the first pair.
The regulation of the bending or curving of the hoop is now to be considered.
The mechanism for this purpose consists in the forked lever W with its fulcrum in ; ;
bearing at its front part the roller which can be lifted and lowered by the
regulation screw St to give the hoop any curving required.
Having now particularly described and ascertained the nature of the said inven-
tion and in what manner the same is to be performed, as communicated to
me by my foreign correspondents, I declare that what I claim is :-
1. A machine for making hoops containing four pairs of rollers, the two first pairs
of which b b and c c¹ (which may be also separated from the machine itself) serve to

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give the profile to the hoop, whilst the rollers D D' and E E' stretch the iron
producing a conical hoop the curving of which is regulated by the roller r,
substantially as described.
242
2. The method of regulating the position of the stretching rollers by forming
pedestals of the rollers O O movable in a vertical direction by means of the levers 1,
the pins d, springs f, and screws S, substantially as described."
3. The arrangement that the upper roller of the pair D D' may be governed in its
axial direction substantially as described.
4. The arrangement of the discs s s¹ fixed on screws for guiding the flat-iron,
substantially as described.
5. The arrangement of the rollers D D' and E E' at an angle with each other for
the purposes set forth, substantially as described.
6. The arrangement of the roller 7 mounted in a forked lever W with the screw St
for the purpose set forth.
Dated this 26th day of August 1889
WM. P. THOMPSON & Co.,
Agents for the Applicant.