An Improvement in Tobacco Fipe Joints.
Year: 1886

page_text: Date of Application, 13th Aug., 1886.
Complete Left, 10th May, 1887.
Complete Accepted, 10th June, 1887.
An Improvement in Tobacco Fipe Joints.
I CARL ELLENBERGER, of the firm of Ziener and Ellenberger, of Nuremburg, in
the Kingdom of Bavaria, Briar Pipe Manufacturers, do hereby declare the nature of
this invention to be as follows :-
My invention relates to an improved. joint for connecting the mouth-piece to the
stem of a tobacco pipe by means of which the mouth-piece may be more readily
connected and disconnected and the difficulty experienced in unscrewing the ordinary
joints in consequence of the clogging of the screw is avoided.
The invention consists of a screw joint formed o a male screw upon the mouthpiece,
from which a portion of the threads are removed so as to leave plain portions at
diametrically opposite sides and a female screw in the socket or ferrule of the pipe
stem from which corresponding portions of the screw threads are also removed
forming longitudinal grooves.
By this means by inserting the part screwed portion of the mouth piece in the
grooves of the female screw and giving it a quarter turn the threads of both parts will
become interlocked and a tight joint obtained, while a quarter turn in the reverse
direction is sufficient to disconnect the month piece from the stem.
C. ELLENBERGER.
By A. M. & Wm. Clark,
53, Chancery Lane, London,
Patent Agents.

page_text: I, CARL ELLENBERGER of the firm of Ziener and Ellenberger of Nuremburg in the
Kingdom of Bavaria, Briar Pipe Manufacturers, 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 :-
My Invention relates to an improved joint for connecting the mouth-piece to the
stem of a tobacco-pipe; and it has for its object to enable the mouth-piece to be
more readily connected and disconnected and to avoid the difficulty experienced in
unscrewing the ordinary joints in consequence of the clogging of the screw.
Reference is to be had to the accompanying drawings forming part of this
specification wherein figure 1 shews the mouth piece and stem of the pipe connected.
Figure 2 shews the same disconnected, the socket being in section and the mouth-
piece turned partly round into position for the insertion of the male screw therein.
Figure 3 shews an end view of the socket, drawn to a larger scale, the dotted lines
shewing the position of the male screw when inserted and screwed therein and figure 4
shews an end view of the male screw. The same letters of reference indicate the same
parts in all the figures.
The Invention consists of a screw joint of metal, bone or other material formed of a
male screw a upon the mouth-piece from which a portion of the threads are removed
so as to leave plain portions at diametrically opposite sides, as at b, and a female
screw c in the socket or ferrule d of the pipe stem from which corresponding portions
of the screw-threads are also removed, as at e, the portions so removed from the socket
corresponding to the portions of the screw threads left intact on the male screw a, in
order that the latter may be inserted by being slid longitudinally into the socket. By
then giving the screw a quarter turn, the threads of the male and female screws will
become engaged and a tight joint obtained by a shoulder at the base of the male
screw abutting against the end of the ferrule. A quarter of a turn in the reverse
direction is sufficient to disconnect the mouthpiece from the stem.
The removal of the threads is effected by filing after they are cut in the ordinary
way, leaving the screws of the oval configuration shewn in figure 3, whereby the one
is caused to more easily enter and engage with the threads of the other.
It will be understood that the relative positions of the male and female screws may
be reversed if desired, with regard to the mouth-piece and stem, but the arrangement

page_text: shewn is preferred, as the coned extremity 9 of the male screw acts as a trap to arrest
the moisture in the stem.
Having now particularly described and ascertained the nature of the said Invention
and in what manner the same is to be performed, I declare that what I claim is ;—
The improved screw-joint for tobacco pipes, consisting of mutilated male and female
screws of the form and engaging with each other, substantially as described and
shewn.