Improvements in Piping or Coils for the Circulation of Brine in Refrigerating or Cold Storage Chambers.
Year: 1892

page_text: Date of Application, 19th Nov., 1592
Complete Specification Left, 8th Aug., 1893—Accepted, 9th Sept., 1893
PROVISIONAL SPECIFICATION.
Improvements in Piping or Coils for the Circulation of Brine in
Refrigerating or Cold Storage Chambers.
We EVERARD HESKETH and AlexandER MARCET both of 23 St. Swithin's
Lane in the City of London Engineers do hereby declare the nature of our
invention to be as follows :-
Our invention relates to piping or coils intended for use in refrigerating or
cold storage chambers. It has hitherto been the custom to join ordinary lengths
of such piping by screw joints or by joints into which a packing material is
squeezed but such joints are liable to leak and to allow the brine to escape and
to damage the goods in the refrigerating or cold storage chambers. It is the
object of our invention to largely reduce the necessity for such mechanical means
of joining by using rows of pipes made without such means of joining throughout
their length or any number of their convolutions.
Our invention may be carried out in the following way: We make the ends of
the length of piping so that they will abut closely against each other and we then
subject the ends to a welding heat and then force the ends together. The joint is
perfected by upsetting or turning down the burr of metal which is formed around
the joint when the lengths of piping are forced together under the welding heat as
aforesaid. The welding heat is preferably obtained by passing a current of
electricity through the pipes whilst held in a suitable welding apparatus so that
intense heat is generated at and between the opposed ends which are then pressed
together and treated as aforesaid.
Dated this 19th day of November 1892.
J. H. JOHNSON & Co.,
47, Lincoln's Inn Fields, London, W.C., Agents.
COMPLETE SPECIFICATION.
Improvements in Piping or Coils for the Circulation of Brine in
Refrigerating or Cold Storage Chambers.
We EVERARD HESKETH and ALEXANDER MARCET, both of 23 St. Swithin's
Lane, in the City of London, Engineers, 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 :-
Our invention relates to piping or coils intended for use in refrigerating or
cold storage chambers. It has hitherto been the custom to join ordinary lengths of
such piping by screw joints or by joints into which a packing material is squeezed
but such joints are liable to leak and to allow the brine to escape and to damage
the goods in the refrigerating or cold storage chambers. It is the object of our
invention to largely reduce the necessity for such mechanical means of joining by
using rows of pipes made without such means of joining throughout their length
or any number of their convolutions. Our invention may be carried out in the
following way :- -We make the ends of the length of piping so that they will abut
closely against each other and we then subject the ends to a welding heat and
then force the ends together. The joint is perfected by upsetting or turning down
the burr of metal which is formed around the joint when the lengths of piping are
forced together under the welding heat as aforesaid. The welding heat is preferably
obtained by passing a current of electricity through the pipes whilst held in a
D27

page_text: suitable welding apparatus so that intense heat is generated at and between the
opposed ends which are then pressed together and treated as aforesaid.
The accompanying drawing represents a coil made as before described the parts
marked with dotted lines being those at which the joining by welding as aforesaid
has been effected!
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:-
The manufacture and use of piping or coils for the circulation of brine in
refrigerating or cold storage chambers and consisting of lengths joined substantially
as hereinbefore explained.
J. H. JOHNSON & Co.,
Agents.