New or Improved Apparatus for Extracting Ferrules, Tubes, and Bushes.
Year: 1887

page_text: Date of Application, 6th Jan., 1887
Complete Left, 3rd Oct., 1887
Complete Accepted, 30th Dec., 1887
PROVISIONAL SPECIFICATION.
New or Improved Apparatus for Extracting Ferrules, Tubes,
and Bushes.
I, ARTHUR STUART WILLIAMS, of Hinton House, near Winchester, in the County
of Hants, Engineer, do hereby declare the nature of this invention to be as
follows
--
This invention has reference to apparatus of simple construction whereby ferrules
may be readily withdrawn from tubes, or tubes or bushes may be readily withdrawn
from holes; it may be used with advantage to extract ferrules from tubes in boilers
and other apparatus. An instrument according to this invention comprises a metal
rod or bolt (hereinafter called the spindle) formed with recesses having cam-like
surfaces; pieces of metal of suitable form (hereinafter called lugs) made to enter the
said recesses; and a tubular device (hereinafter called the tube) with slots or holes
through which the lugs project when the tube is in place upon the spindle. The
arrangement is such that when the parts are together, if there be partial rotation of
the tube in relation to the spindle, or vice versa, the lugs will be caused to move out
laterally from the axis of the spindle, such outward movement being, however, limited
by suitable projections formed with or attached to the lugs. Means such as a pin
projecting into a slot prevent longitudinal movement of the tube in relation to the
spindle. Part of the spindle projecting from the tube is screwed, and is provided
with a bridge that can bear against a tube plate or the like, and will form an abut-
ment for a nut on the spindle. With an instrument such as described, the modus
operandi-for example, to remove a ferrule from a boiler tube is as follows:-The
end of the spindle having been inserted into the tube with the lugs beyond the inner
end of the ferrule, the tube of the instrument is rotated partially, thereby causing the
lugs to move outward behind the ferrule. On the nut of the spindle being now
turned, the bridge takes a bearing against the tube plate of the boiler, and as the
turning of the nut is continued, the spindle, lugs, and ferrule are withdrawn from
the boiler tube.
1007
W. LLOYD WISE,
46, Lincoln's Inn Fields, London, W.C.,
Agent for the Applicant

page_text: COMPLETE SPECIFICATION.
New or Improved Apparatus for Extracting Ferrules, Tubes,
and Bushes.
I, ARTHUR STUART WILLIAMS, of Hinton House, near Winchester, in the County
of Hants, Engineer, 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 has reference to apparatus of simple construction whereby ferrules
may be readily withdrawn from tubes, or tubes or bushes may be readily withdrawn
from holes; it may be used with advantage to extract ferrules from tubes in boilers
and other apparatus. An instrument according to this invention comprises a metal
rod or bolt (hereinafter called the spindle) formed with recesses having cam-like
surfaces pieces of metal of suitable form (hereinafter called lugs) made to enter the
said recesses; and a tubular device (hereinafter called the tube) with slots or holes
through which the lugs project when the tube is in place upon the spindle. The
arrangement is such that when, the parts are together, if there be partial rotation of
the tube in relation to the spindle, or vice versa the lugs will be caused to move out
laterally from the axis of the spindle, such outward movement, being, however,
limited by suitable projections formed with or attached to the lugs. Means such as
a pin projecting into a slot prevent longitudinal movement of the tube in relation to
the spindle. Part of the spindle projecting from the tube is screwed, and is provided
with a bridge that can bear against a tube plate or the like, and will form an abutment
for a nut on the spindle.
An apparatus constructed in accordance with this invention is illustrated in the
annexed sheet of drawings, in which the same letters refer to like parts wherever
they occur.
Fig. 1 shews a complete apparatus in side elevation.
Fig. 2 is a view at right angles to Fig. 1 shewing the apparatus with the nut
and bridge removed.
Fig. 3 shews the spindle alone.
Figs. 4 to 8 inclusive are detail views hereinafter referred to.
A is the spindle (preferably of steel) with a screw B cut thereon for a part of its
length commencing from one end. is a projecting part or head formed on the
other end of the spindle. D D. are recesses, (of which there may be more than two)
formed in the spindle and having cam like surfaces D'. EE are the lugs (shewn
separately in Figs. 4) made to enter the recesses D, one such lug is inserted into each
recess in the spindle. The lugs are formed cach with projecting part E' designed
to take into a similarly formed recess in a tube F (see Figs. 1, 2, 6, and 7). This
tube slips over the spindle A, so as to be able to turn freely upon it; two or more
rectangular slots are formed in the tube one slot corresponding to each recess D in
the spindle. A screwed pin f, is also provided, which, when the tube F is in place

page_text: is able to work in a slot or groove f¹ Fig. 3 in the spindle A, so as to admit of a
movement of partial rotation but at the same time to prevent the tube F slipping off,
the arrangement being such, that when the lugs E are placed in the recesses D of the
spindle A, and the tube F is slipped into its place (as seen in Figs. 1 and 2) the lugs
may be either sunk to the level of the surface of the tube F when it is in one position,
or, by turning the said tube relatively to the spindle, they may be projected beyond
the surface of the tube F as seen in Fig. 2. To afford greater facility for turning the
tube F, two or more thumb holes or recesses such as g may be formed in it.
G. Fig. 1 is a bridge, H a washer, and I a nut working upon the screw B of the
spindle. The operation of this apparatus to extract a ferrule (which use I now refer
to for the purpose of description) is as follows.
The end C of the apparatus is inserted into and through the ferrule to be extracted,
the tube F is then turned so as to cause the lugs E to project behind the ferrule, in
such a manner as to engage with it, so that the spindle A cannot be withdrawn unless
the ferrule comes with it. The nut I being then tightened against the bridge G
(which must take against a relatively fixed part such for example as the front of a
boiler) the ferrule will be withdrawn by the lugs.
As will be evident apparatus made in accordance with this invention as above set
forth may be variously modified according to requirements without departure from
the essential nature of the invention, and such apparatus may be applied to various
purposes, such for example, as for extracting tubes & bushes.
Having now particularly described and ascertained the nature of this inven-
tion and in what manner the same is to be performed I declare that what 1
claim is :-
(1.) In apparatus for extracting ferrules, tubes, and bushes the construction of a
spindle with cam like surfaces, lugs arranged to bear against their surfaces, and
means such as a slotted tube for guiding the lugs and retaining them laterally when
they are acted upon (for the purpose of moving them outward) by the said cam like
like surfaces, as above set forth.
(2.) My improved apparatus for extracting ferrules, tubes, and bushes, substantially
as described above with reference to the drawings annexed.
Dated this 3rd day of September 1887.