Improvements in Means for Securing End Fittings to Tubes.
Year: 1897

page_text: PROVISIONAL SPECIFICATION.
Improvements in Means for Securing End Fittings to Tubes.
I, JOHN ECCLESTON SHELDON, of Stafford Street, in the City of Birmingham,
Warwickshire, Manufacturer, do hereby declare the nature of this my said 'inven-
tion to be as follows:-
This invention relates to means whereby the terminals or other like attachments
to the ends of tubes may be internally secured thereto.
At
It consists of a central screw threaded spindle the part (or whole) of whose length
is made square or other noncircular shape to prevent its turning round.
the inner end of this spindle is a nut, against which rests an expansible india-
rubber collar, or other spring, against either of which is placed a sliding non-
rotative washer. The terminal fitting (that part to be attached) is made in two
parts, the fore part of which is nonrotative and slidingly fits upon the spindle,
while the rear part has a screw threaded hole which takes upon the thread of the
spindle. As before intimated the expansible india-rubber collar, may be substi-
tuted by two concave disc like shaped springs, lying face to face which upon being
forced together expand into the tube.
Its action is therefore somewhat thus: The spring part is passed into the tube,
when by screwing the rear part of the fitting forward-the fore part being held
from rotating the spring is expanded tightly into the tube and thus holds it
firmly in place.
Dated this 3rd day of March 1897
Improvements in Means for Securing End Fittings to Tubes.
I, JOHN ECCLESTON SHELDON, of Stafford Street, in the City of Birmingham,
Warwickshire, Manufacturer, do hereby declare the nature of this invention and
in what manner the same is to be performed, to be particularly described and ascer-
tained in and by the following statement:-
This invention relates to means whereby the terminals or other like attachments
to the ends of tubes may be internally secured thereto.
:-
In order to more clearly explain this my invention, I have appended hereunto
illustrative drawings upon which are reference numbers, and in which:
Fig. 1, shows a general sectional view of my invention.
Fig. 2, is a detail view of the expansible rubber collar.

page_text: Fig. 3, shows a modified form of expansible collar consisting of metallic spring
plates.
Fig. 4, is a front view of such plates.
6 is a square or other non-circular shaped spindle which is screw threaded along
its edges. 7, is an india-rubber collar, which in its normal shape as seen in
Fig. 2 is proportionately long, but small in diameter. The terminal fitting (that
part to be attached) is made in two parts 8 and 9. The part 8, has a non-circular
hole to suit the spindle, so that the spindle 6, the collar 7, and part 8, are relatively
non-rotative to each other. The part 9, has a screw threaded hole which fits upon
the spindle. Thus when the expansible collar end is placed within the tube 10,
and the part 8, held stationary, by screwing up the part 9, the collar is bulged out
as seen in Fig. 1, expanding itself tightly within the tube.
In Figs. 3 and 4, are shown plates 11 and 12, having radial slittings 13. Two
of such plates when placed face to face with each other may form an expansible
collar as seen in Fig. 3, in place of the collar 7, but the latter seems preferable.
Having now particularly described and ascertained the nature of this my said
invention, and in what manner the same is to be performed, I declare that what
I claim is:
-
1. The combination and arrangement of parts constituting this my improved
fastening constructed and arranged substantially as set forth and shown in Figs. 1
& 2.
2. The combination and arrangement of parts constituting this my improved
fastening having the modified expansible spring collar device as set forth and
shewn in Figs. 3 & 4.
חד זוח זno
CHARLES T. POWELL,
Applicant's Agent, 12, Cherry Street, Birmingham.