An Improvement in Extractors for Stuffing-box Glands, Ferrules for Boiler Tubes, and the like.
Year: 1892

page_text: Date of Application, 23rd June, 1892
Complete Specification Left, 1st Apr., 1893-Accepted, 27th May, 1893
PROVISIONAL SPECIFICATION.
An Improvement in Extractors for Stuffing-box Glands, Ferrules for
Boiler Tubes, and the like.
I THOMAS KEMBER WILKES Engineer & Boiler Maker of Albion Street,
Mile End, Portsmouth do hereby declare the nature of this invention to be as
follows:-
No. 1 a hollow cylindrical piece of metal, screwed outside at one end & fitted
with a nut, a collar in the centre, & an acute angled collar at the other end which
is split or sawn up in several places to allow the end & the collar to be expanded.
No. 2 a bolt with nut at one end & a conical head at the other, to work in the
above. No 3 a bridge of such form, as to allow the above cylinder to pass through,
& to transmit the pressure from the cylinder nut to the solid plate or casting from
which the object is being extracted.
When extracting ferrules from boiler tubes-No. 1 is placed with its split end
inside the tube so that the edge of the angular split collar is beyond the ferrule end.
The nut on No. 2 is tightened causing the split collar to expand and engage the
end of the ferrule. No. 3 the bridge is then placed over the cylinder and the nut
screwed on.
By tightening this nut the cylinder and ferrule are withdrawn from the tube.
Dated this 1st day of June 1899
COMPLETE SPECIFICATION.
An Improvement in Extractors for Stuffing-box Glands, Ferrules for
Boiler Tubes, and the like.
I, THOMAS KEMBER WILKES Engineer and Boiler Maker of Albion Street
Mile End Portsmouth 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:-
No. 1 a hollow cylindrical piece of metal screwed outside at one end and fitted
with a nut A and an acute angled collar B at the other end which is split or sawn
up in several places to allow the end and the collar to be expanded.
No. 2 a screw bolt with nut C at one end and a conical head D at the other to
work in the above.
No. 3 a bridge of such form as to allow the above cylinder to pass through it
and to transmit the pressure from the cylinder nut A to the tube plate or the object
from which the ferrule, bush, or gland is being extracted.
When extracting ferrules from boiler tubes No. 1 is placed with its split end B
inside the tube so that the edge of the angular split collar is beyond the ferrule end
as shewn in Fig. I in the accompanying drawing.
The nut Con No. 2 is tightened causing the split collar B to expand so as to
engage the end of the ferrule when the cylinder No. 1 is withdrawn.
The bridge No. 3 is then placed over the cylinder & the nut A screwed on.
By tightening this nut the cylinder and ferrule are withdrawn from the tube.
In the accompanying drawing
Fig. I is a sectional plan shewing the extractor in position ready for use for
extracting a ferrule from a boiler tube.
Fig. II is an end elevation of the extractor Fig. III is a sectional elevation of
the upper portion.

page_text: 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
1st. The cylinder-No. 1 as shewn and described.
2nd. The conical ended screw bolt-No. 2 as shewn, described, and applied.
3rd. The bridge-No. 3 as described.
DL-3
1
C ML 1000
THOS. KEMBER WILKES.