Improvements in Couplings for Pipes and Tubes.
Year: 1895

page_text: Date of Application, 22nd Jan., 1895-Accepted, 20th Apr., 1895
COMPLETE SPECIFICATION.
Improvements in Couplings for Pipes and Tubes.
I, JOHANN JANKE, of 13 Jacobstrasse Bromberg, in the Empire of Germany,
Manufacturer, 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 couplings for pipes and tubes and consists in the
arrangement of adjustable pins with which engage the hooks jointed to a bell-
crank lever whereby the coupling is effected. This has for its object to enable
two muffs forming the coupling to be firmly and tightly pressed against each
other by adjusting the said pins when the packing or the parts of the coupling
give.
In the accompanying drawing
Figure 1 is a side elevation showing the improved coupling in the closed
position.
Figure 2 is a similar view representing this coupling in the open position.
Figure 3 is a view at a right angle to that shown in Figure 1, and
Figure 4 is a longitudinal section on the line IV-IV of Figure 3.
The coupling represented is designed for use in pipes for raising beer and other
liquors from the barrels to the taps. It comprises the two muff's a and b which
engage with each other as far as the flange or collar c. This flange or collar
constitutes the bearing surface for the indiarubber or other suitable packing d.
The counter surface for this packing is formed by the terminal surface of the
muff a.
On this muff are provided the two pins e e which serve as pivots for the
bell-crank lever fg.
The long arm of this lever forms a handle. To the end of the short lever
arm g pivot the hook-shaped links which in use engage by their hooks with
the pins on a nut which is adjustable upon the muff 6 provided with external
screw threads. In the downward movement of the handle the said links connect
the muff a with the muff to make a tight joint (Figures 1 and 4) whilst in its
upward movement the said links entirely liberate the pins ii (Figure 2). When
the tension in the packing d has decreased, the nut carrying the pins ii is, prior
to the connection of the muffs, caused to recede by one or more turns from the
fixed pins e e.
My improved arrangement possesses the advantage that pipes and tubes can be
very rapidly coupled and uncoupled by a simple traction or pressure exerted upon
a lever arm so that the operation may if necessary be easily effected even in the
dark. Moreover I obviate the twisting of pipes and tubes made of tin, indiarubber,
hemp or other soft material, while the adjustment to a greater or smaller tension at
the joint d is rendered possible by displacing the pins e e and ii relatively to each
other.
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 :-
A coupling designed for pipes and tubes and having a bell-crank lever for
onnenting the sama in which the nins ; i adanted to engage with hooks pivoted to

page_text: the said lever are rendered adjustable by providing the same on a nut which is
fitted upon a corresponding screw thread on the coupling muff b.
Dated this 22nd day of January 1895.
HASELTINE, LAKE & Co.,
45, Southampton Buildings, London, W.C., Agents for the Applicant.