Year: 1886

page_text: Date of Application, 30th Aug., 1886.
Complete Left, 31st May, 1887.
Comolete Accepted, 1st July, 1887.
We GEORGE LOUIS LAVENDER, Manager of Eldon Saddlery Works, Walsall, in .
the County of Stafford, and HERBERT PRICE LAVENDER, of Clevland Street, Wolver-
hampton, Manufacturer, do hereby declare the nature of our said invention to be as
follows:-
'
The object of our invention is to manufacture improved metallic pipes, with
improved facilities for manipulating the same.
Our invention is applicable to pipes for water, steam, hot air, and other purposes.
We form the pipes with annular corrugations, ribs or indentations. This form
furnishes an additional amount of heating surface, when the pipes are used for
heating purposes, by steam, hot air, hot water, or other heating medium; also an
increased absorbing surface when used in refrigerating or analogous operations. The
ribs or corrugations are also convenient for cutting the pipes to the required lengths,
and may be used as flanges and bearings for packing, and also to facilitate the
formation of joints or junctions.
In joining two pipes, they are placed together, with an india rubber or other elastic
washer between them. A suitably formed collar is then placed round the joint having
lugs or other provisions formed thereon for securing rings or straps, which straps take
into the corrugations above and below the collar, whereby the pipes are secured in
position, and the joint is made water and steam-tight.
Dated 30th August 1886.
GEO. DOWNING,
Agent for Applicant.

page_text: We, GEORGE LOUIS LAVENDER, Manager of Eldon Saddlery Works, in the County
of Stafford and HERBERT PRICE LAVENDER, of Cleveland Street, Wolverhampton,
Manufacturer, do hereby declare the nature of our said invention and in what manner
the same is to be performed, to be particularly described and ascertained in and by
the following statement :-
The object of our invention is to manufacture improved metallic pipes, with improved
facilities for manipulating the same.
Our invention is applicable to pipes for water, steam, hot air, and other purposes.
We form the pipes with annular corrugations, ribs or indentations. This form
furnishes an additional amount of heating surface, when the pipes are used for heating
purposes, by steam, hot air, hot water, or other heating medium; also an increased
absorbing surface when used in refrigerating or analogous operations. The ribs or
corrugations are also convenient for cutting the pipes to the required lengths, and
may be used as flanges and bearings for packing, and also to facilitate the formation
of joints or junctions.
And in order that our said invention may be particularly described and ascertained,
reference is hereby made to the accompanying drawings, in which similar letters of
reference indicate corresponding parts.
Fig. 1. is a longitudinal view and Fig. 2 a section of the same. Fig. 3 is an end
view of Fig. 1 and Fig. 4 a section on the line a b, shewing the general form of the
pipes and method of making fluid-tight joints.
In the drawings the corrugations are shewn semi-cylindrical in form, but we do
not confine ourselves to that particular form of groove.
cc are the ends of two tubes or pipes, d d are two india-rubber packing rings,
placed in corrugations or grooves, as shewn. e is a ring of sheet metal, bent to the
form shewn in Fig. 4. is a cap fitted with a screw for pressing the ends of the
ring e towards each other, and tightening the joint. 9 is a short piece of rubber
packing placed in the cavity of the cap and retained in that position by wire or other
means.
The method of forming the junction is as follows:-The two ends of the pipes,
fitted with the rubber rings d d, are brought together. The prepared metallic ring is
then placed round the joint. The cap is then placed over the ends of the strap, and
the screw turned until the packing is sufficiently compressed to form a fluid tight
joint.
Other kinds of packing may be used if preferred.

page_text: The junctions of ordinary pipes may be formed in a similar manner, by forming a
suitable groove near the end of each pipe to receive the packing rings d d.
Having now particularly described and 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. The manufacture and use of metallic pipes or tubes, having corrugations or
grooves formed therein or thereon, substantially as and for the purposes hereinbefore
described and shewn on the drawings.
2. The method of joining the ends of pipes by means of straps, plates, or rings of
metal e e, enclosing suitable packing dg and secured by the screw capf, substantially
as hereinbefore described and shewn on the drawings.