Improvements in Ferrule Extractors.
Year: 1888

page_text: Date of Application, 15th Nov., 1888
Complete Specification Left, 15th Aug., 1889-Accepted, 21st Sept., 1889
PROVISIONAL SPECIFICATION.
Improvements in Ferrule Extractors.
We, WILLIAM HICHENS RICKARD, of Trelawney House, Caerleon Road, Newport,
and THOMAS JOHN RICKARD, of 15 Glantorvan Terrace, Blaenavon, both in the
County of Monmouth, South Wales, Mechanics, do hereby declare the nature of this
invention to be as follows :—
Our improvements refer to tools known as ferrule extractors of simple construction
as hereafter described. The box which carries the tool and in which it works is made
preferably octagonal in shape whereby a good bearing is obtained against the tube
plate for the action of the tool. Through the centre of this box there is provided a
hollow steel bolt having a nut on the outer end thereof and working against the box
end. This hollow steel bolt at its inner end is made with an octagonal shaped head
corresponding in shape with that of the box, over this octagonal head and between it
and the inside of the box, there are provided say four steel jaws kept in position by
springs acting against the interior of the box and these steel jaws are bent over behind
the octagonal head, when such a shaped head is used, because we do not limit ourselves
absolutely to the octagonal shape although we have found such a shape to answer the
purpose woll. The outer ends of these steel pieces are formed with shoulders to grasp
or take behind the ferrule to be extracted. There is a mandril fitted in the hole
through the steel bolt having a knob at outer end and a tapered or conical point at
the other end so that by pressing the knob the steel jaws are expanded.
To use the tool place the jaws of same into the ferrule to be extracted with the
octagonal box resting against the tube plate then on the mandril being pushed forward
or advanced by the hand of the workman the steel jaws are expanded the shoulders
thereon grasp the end of the ferrule the nut on the box is then turned thereby
bringing back the bolt, steel jaws, and ferrule.
The mandril instead of being pushed by hand may be screwed into the bolt and by
turning same the jaws expanded.
COMPLETE
SPECIFICATION.
Improvements in Ferrule Extractors.
We, WILLIAM HICHENS RIOKARD, of Trelawney House, Cuerleon Road, Newport,
and THOMAS JOHN RICKARD, of 15 Glantorvan Terrace, Blaenavon, both in the
County of Monmouth, South Wales, Mechanics, 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:-
Our improvements refer to tools known as ferrule extractors, of simple construction
as hereafter described with reference to the accompanying drawings.
Figure 1 is a longitudinal sectional elevation shewing such a ferrule extractor
constructed according to our invention.
Figure 2 shews two half sections at the lines x, y and a¹ y¹ of Figure 1.

page_text: Figure 3 shews a piece of a boiler tube plate with the apparatus applied to one of
the tubes, and is intended to shew the advantage of the octagonal shape of the
outer case.
Figure 4 is a plan, and Figure 5 is an elevation of a form of lever which may be
applied to the apparatus when it is considered necessary to apply a sudden force for
effecting the extraction of one of the ferrules..
The box a which carries the tool and in which it works, is made preferably
octagonal in shape; through the centre of this box a there is provided a hollow steel
bolt 6 having a nut c on the outer end thereof and working against the box end.
This hollow steel bolt b at its inner end is made with an octagonal shaped head b¹
corresponding in shape with that of the box a; over this octagonal head b¹ and
between it and the inside of the box a there are provided say four steel jaws d kept in
position by springs d' acting against the interior of tho hox, and these steel jaws & are
bent over behind the octagonal head 6' when such a shaped head is used, because wẻ
do not limit ourselves absolutely to the octagonal shape although we have found such
a shape to answer the purpose well. The outer ends of these steel jaws d are formed
with shoulders d to grasp or take behind the ferrule to be extracted. There is a
mandril rod fitted in the hole through the steel bolt 6 having a knob fat outer end
and a tapered or conical mandril 9 at the other end so that by pressing the knob f the
steel jaws d are expanded. This mandril g we preferably form with circumferential
indentations and the inside of the jaws d' with teeth so that when the jaws are forced
open, the teeth take into the indentations and prevent the mandril g running back, or
if desired the mandril may be screw threaded to prevent any backward motion.
e,
:
The polygonal preferably octagonal shape of the box a is a very advantageous form
for same, as it retains the various parts in their proper positions and also it enables
the box to take a firm bearing against the tube plate as shewn at Figure 3, as from
the general arrangement of the tubes, a box a if made of a circular section would bear
on some of the tubes and not fairly on the tube plate, and on account of the tubes not
being of exactly equal lengths the appliance would then not act in a direct manner ;
this is obviated by constructing the box as described. We also provide on the box a
two lugs / Figure 2 which may be acted upon by levers, such a lever device is shewn
at Figures 4 and 5 and marked with the letter k. This lever k is forked and takes
under the said lugs h and also bears on the tube plate, and a force or impact may be
applied to the upper end of the lever when it is found necessary to loosen the
ferrule by sudden force.
To use the tool, place the jaws d of same into the ferrule to be extracted with the
octagonal box a resting against the tube plate indicated at in Figure 1 by dotted
lines; then on the mandril rod e being pushed forward or advanced by the hand of the
workman the steel jaws d are expanded by the entry, between same; of the mandril g,
and the shoulders d of the jaws d thereon grasp the end of the ferrule m Figure 1,
the nut c on the box a is then turned thereby bringing back the bolt b, steel jaws
and ferrule m.
The mandril instead of being pushed by hand may be screwed into the bolt b and by
turning same the jaws expanded.
Having now particularly described aud ascertained the nature of our said
invention and in what manner the same is to be performed we declare that what
we claim is :-
1. In ferrule extractors, the combination with the extractor jaws d, d³ and springs d¹,
of the mandril 9 and rod e, the screwed and headed pin or bolt b, b', nut and
polygonal box a, substantially as and for the purposes herein set forth.
2. In ferrule extractors, the combination with the extractor jaws d, d, springs ď,
mandril and rod g, e, pin b, b' and nut o, of the polygonal box a having lugs / thereon,
together with the lever device k, as set forth.
3. The particular construction and arrangement of ferrule extractors consisting of

page_text: wo jaws a a springs d', serrated mandril g and rod
screwed and headed pin b, b¹,
nut c and polygonal box a, together with the lugs & thereon, all substantially as and
for the purposes set forth.
Dated this Fifteenth day of August 1889.
W. H. RICKARD.
T. J. RICKARD.
By Brewer & Son,
33, Chancery Lane, London,
Patent Agents.