Improvements in the Manufacture of Centrifugal Pressers for the Fliers of Speeders.
Year: 1891

page_text: Date of Application, 5:h June, 1891-Accepted, 11th July, 1891
COMPLETE SPECIFICATION.
Improvements in the Manufacture of Centrifugal Pressers for the
Fliers of Speeders.
I, BENJAMIN FRANKLIN NICHOLAS, of 145 Oxford Street, in the City of
Providence, County of Providence and State of Rhode Island, United States of
America, Machinist, do hereby declare the nature of my 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 relates to the manufacture of what is known as a "centrifugal
presser," which is pivotally mounted on one of the arms of a speeder-flier and
presses upon the bobbin while the same is being wound.
The invention consists in certain features hereinafter described and claimed.
Referring to the drawings,
Figure represents a flier in front elevation with its centrifugal presser mounted
thereon.
Figure 2 shows in perspective the metal blank from which the old or usual form
of presser has been made.
Figures 3, 4, 5 and 6 represent in perspective the various changes of form that
said blank undergoes to complete the foot portion of the presser, (the upper end of
the leg of the presser not being shown in said figures).
Figure 7 represents in perspective the form of blank used in my improved
manufacture of the presser-foot.
Figures 8 and 9 show progressive changes in the form of said blank.
Figure 10 represents in perspective the completed presser-foot in readiness to be
attached to the presser leg.
In the manufacture of centrifugal pressers (say seven-inch size) as usually
heretofore practised a blank-piece A, Fig. 2, of the best Norway iron of the proper
shape and size (about five inches long, one-half an inch wide, and five-sixteenths of
an inch thick) is heated three times to "break down," "rough," and finish said
blank into a rudimentary foot a and leg 1, as shown in Fig. 3. The blank is then
heated again to enable its rudimentary foot a to be swaged into the shape shown in
Fig. 4. The piece is then again heated twice to enable the foot portion a to be
swaged into the shape shown in Fig. 5, after which the "fins" produced by swaging
are trimmed off. The shank a' of the foot portion a is then twisted axially while the
metal cold to bring the toe portion a³ of the foot into a position at right angles to
the heel as of the foot, as shown by dotted lines in Fig. 5. The heel a³ is then
drilled with a hole i, (shown by dotted lines in Fig. 5,) and an opening e is made
in the toe of the form shown in Fig. 6, after which the article is "buffed off" to
proper size. The foot a is next bent sharply at its junction d with the leg portion !,
so as to cause the article to assume an form. This bending must be done while
the metal is cold, owing to great difficulty in handling the article for such purpose
if hot, and the bending is exceedingly liable to produce a crack on the outer side
at w, where the foot joins the leg, thereby greatly weakening the article. The
shank a of the foot is then properly curved, as shown in Fig. 6, and then the hole b
is reamed out. Finally a slot or opening e is cut from one side of the heel into the
hole b, thereby completing the presser-foot.
The leg of the article is of proper length to fit a flier of definite size, and the
end or head, Fig. 1, of the leg is formed in any preferred or proper shape (which
forms no part of the present improvement)-such, for instance, as shown in Fig. 1
to enable the article to be mounted upon a flier. In the manner of mounting
shown in Fig. 1 the head fis curved around one arm of the flier G through a slot g
on one side of the arm, and the lower end of said flier-arm passes through the hole b

page_text: in the heel of the presser-foot, so that the article is loosely pivoted on the flier-arm,
in order that the centrifugal force produced by the revolution of the flier shall cause
the presser-foot to hug the bobbin being wound, in a well-understood way.
The manufacture of centrifugal presses when conducted as above described is
comparatively expensive, owing to the higher grade of iron required to allow of so
many changes in shape, to the great number of heatings to which the iron must be
subjected, and to the large number of operations and tools necessary to complete
the article. The article is also very liable to break when bent at d, as already
explained. Further, as the shank a¹ of the presser-foot is very liable to break at a
the heel portion at y, and the toe at during use, the whole article must be thrown
away when a break occurs and an entirely new one be substituted.
The object of my improvement is to produce a less expensive and stronger
presser, and at the same time to so make it that if the presser-foot breaks during
use in any part another foot can be easily attached to the leg portion of the article
and the cost of a new leg be thereby saved. The manufacture of the leg does not
enter into the improvement, which resides in the forming of the presser-foot and its
attachment to the leg, though it is to be noted that by my improved manufacture
a cheaper grade of iron can be used for the leg than has been possible heretofore.
In forming the presser-foot in accordance with my invention a blank H, Fig. 7,
of comparatively low-grade iron is punched from a strip, say, three thirty-seconds
of an inch thick. This blank is bent cold on the line k, Fig. 7, to form a tang m.
(Shown by dotted lines in Fig. 7 and by full lines in Fig. 8.) The blank is then
bent cold upon itself on the line to form two parallel portions, and such portions
are then heated and welded together, forming a solid portion h. While hot the
portion is drawn out and swaged into the shank portion and toe portion ²,
Fig. 9, of the presser-foot, and the foot is then buffed off. The opening or slot o
(shown by dotted lines in Fig. 9 and by full lines in Fig. 10) is now punched in the
toc, thereby completing the shank and toe of the foot. The tang m is now bent
or curved cold into the shape shown in Fig. 10 to give the foot at this point a
bearing to receive the arm of the flier, and the portion of the blank is bent or
curved cold into the form shown in Fig. 10. Then the shank is curved, as shown
in said figure, and the foot is completed. A properly-formed leg! (shown by dotted
lines, which may be similar in shape to the leg shown in Fig. 1) is now inserted into
the bent portion p of the foot, and the foot is rigidly secured to such leg in any
proper manner, but preferably by brazing.
From the foregoing description it will be readily seen that my improved
manufacture of the presser-foot is much simpler and less expensive than the old
manufacture of such feet, that the presser will be stronger, because there is no
liability of breakage at the point of junction of the foot with the leg, (as at the
point in the old form of presser,) and that if the shank or the toc or heel of my
foot should break during use the foot can readily be unbrazed or detached from the
leg and another foot quickly brazed on or attached in its place, thereby saving the
expense of a new leg. By making the presser-foot separate from the leg, as by my
manufacture, a cheaper grade of iron can be used for the leg than is necessary by
the old way of manufacture.
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:
1. The improvement in the manufacture of the feet of centrifugal pressers for the
fliers of speeders, which consists in bending a properly-shaped blank to form a
tang m, bending the blank upon itself to form two parallel portions and welding
such portions together, drawing out and shaping such welded portions into the
shank and toe of the foot, bending or curving the tang m for a bearing for the
flier-arm, and bending or curving the portion p of the blank to receive the presser-
leg, substantially as set forth.
2. The improvement in the manufacture of centrifugal pressers for the fliers of

page_text: speeders, which consists in bending a properly-shaped blank to form a tang m,
bending the blank upon itself to form two parallel portions and welding such
portions together, drawing out and shaping such welded portions into the shank and
toe of the foot, bending or curving the tang m for a bearing for the flier-arm,
bending or curving the portion of the blank to receive the leg of the presser, and
brazing the foot to the lower end of such leg, substantially as set forth.
Dated this Twenty-sixth day of May 1891.
BENJAMIN FRANKLIN NICHOLAS.
Haseltine, Lake & Co.,
45, Southampton Buildings, London, Agents for the Applicant.