Improvements in Wooden Bobbins, Pirns, or Tubes.
Year: 1898

page_text: Date of Application, 6th Apr., 1898-Accepted, 25th June, 1898
COMPLETE SPECIFICATION.
Improvements in Wooden Bobbins, Pirns, or Tubes.
I, REGINALD HADDAN, of the Firm of Herbert Haddan & Co., of 18, Buckingham
Street, Strand, W.C., London, Patent Agent, do hereby declare the nature of this
invention a communication to me from abroad by the Firm of Juan Pujol E
Hijos, of Barcelona, in the Kingdom of Spain, Manufacturers, 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 improvements in wooden bobbins pirns or tubes which
are easily injured in consequence of the change of the temperature, or the damp-
ness to which they are constantly subjected, it results therefrom that after
having undergone a certain amount of use they do not fit properly on the spindles
of the machines, and consequently the spinning action is defective and the thread
is injured.
In order to avoid these inconveniences, the bobbins etc.. have been painted or
varnished making the wood impermeable but although it is true that by this
means their duration is increased, it is also true that at the end of a very short
time these bobbins thus prepared have to be put aside, as they become unsuited
for the spindles of the machines, they vibrate in consequence of the great velocity
(8,000 revolutions in one minute) with which they turn, and spring and break
the thread, or the spindles being conical and the hole in the bobbin pirn or tube
becoming shrunk, it results that they cannot be adjusted properly on the spindle.
The improvements which I have effected, consist of applying in a part of the
length of the central bore a metallic tube the edges of which are turned over in
order to fix it in the position desired. The interior diameter of this tube is in
accordance with that of the spindle on which it is to be arranged.
The annexed drawing shows a longitudinal section of the improved bobbin.
The longitudinal bore of the bobbin A has three principally different diameters,
namely, the under part B of large diameter, the upper part C the diameter of
which is also as large as possible, and the central part in which the metallic tube 1)
is inserted. This latter can be conical or cylindrical according to the form or
the shape of the spindle on which it is to be applied. In the annexed drawing
this tube is conical and is preferably fixed in position by turning its edges out-
wards as shown at D¹. The length of the tube 1 may be varied to suit
requirements. The bobbin A is shown in the drawing in full size and the length
given to the tube D is that which has seemed to be the most convenient, but it
is evident that it could be greater or less.
The end of the holes B and C may be spherical or oval or of other convenient
form in order that when placing the bobbin on the spindle the latter passes
easily into the metallic tube D.
The tube I can be of brass or any other convenient metal. The bobbin can
receive an exterior painting or varnishing of any kind. It will be seen that by
providing in the interior of the bore of the bobbin a metallic tube suitable to the
spindle intended to support them, the alterations which the wood may undergo
through dampness or the changes of temperature, cannot alter the diameter of

page_text: the tube D; and this tube being the only part of the bobbin to be adjusted on
the spindle, the bobbins will always occupy the same position on the spindles,
and the inconveniences before mentioned will be avoided.
Having now particularly described and ascertained the nature of this invention
and in what manner the same is to be performed I declare that what I claim
is:-
Improvements in wooden bobbins pirns or tubes in which the same are pro-
vided in a part of their bore with a fixed metallic tube or lining, substantially
as and as. for the purpose described and illustrated by the annexed drawing.
TL 1:1 1000