Improvement in Locomotive Boilers.
Year: 1893

page_text: Date of Application, 5th Apr., 1893
Complete Specification Left, 5th Jan., 1894-Accepted, 3rd Mar.,
1894
PROVISIONAL SPECIFICATION.
Improvement in Locomotive Boilers.
We, JOSEPH SIDNEY NEWLIN, and JOHN FREDERICK LIGHTSEY, both of
Fairfax, South Carolina, U.S.A.; Inventors, do hereby declare the nature of this
invention to be as follows:-
This our invention has reference to and improvement in locomotives; the object
of the invention being to cause a return of the heated gases circulating through
the tubes and thus prolong the circulation and produce greater efficiency.
By this invention we provide pieces of U-shaped tubes having a thickened
portion at the hend to strengthen them. The ends of the bent tubes are threaded
and tapered so as to hold firmly in the ends of the boiler-tubes when driven in.
One end of a bent tube enters one boiler-tube and the other end, an adjacent tube.
Dated this 4th day of April 1893.
W. H. MUNNS,
Applicants' Agent.
Improvement in Locomotive Bollers.
We JOSEPH SIDNEY NEWLIN and JOHN FREDERICK LIGHTSEY, both of
Fairfax South Carolina, U.S.A. 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 is in the nature of an improvement in locomotive boilers, designed
to secure a more perfect utilization of the fuel and a greater amount of heat. It
consists in the peculiar means for returning the flames and hot currents through the
flues of the boiler as hereinafter fully described.
Fig. 1 is a vertical longitudinal section of a locomotive furnace and boiler.
Fig. 2 is a detail view of one of the parts.
G and H are the flues of the boiler through which the hot currents pass from the
fire box to the smoke stack. At the end of these flues we provide what we call
"return ends" F. These consist of U-shaped tubes each having its two legs or
branches a¹ a¹ made tapering and provided exteriorly with screw threads of deep
cut and thin threads. The outside bends 6 of these "return ends" are made thick
and heavy with a sort of anvil head to permit hammering thereon without damage
to the piece.
These "return ends" are designed to be driven into two adjacent fire flues G H
so as to take the currents that pass forwardly in one flue G and return them
backward through the adjacent flue H, and then forward again into the smoke box
through another flue G, thus securing a much longer travel of the hot currents
through the boiler and a better utilization of the heat. The screw threaded ends
on the "return ends" are not to be rotated or turned in, but are to be driven in by
blows of a hammer delivered on the anvil heads of the "return ends," the thin
screw threads under this treatment being meshed to a close fit and holding firmly
to the inner edges of the flues when so driven to place.

page_text: Having now particularly described and ascertained the nature of our said inven-
tion and in what manner the same is to be performed, we declare that what we
claim is :-
1. The "return ends" F having a thickened anvil head and tapered branches
having deep threads cut thereon substantially as shown and described.
2. The combination with the flues G H in a boiler; of the "return ends" F
having a thickened anvil head and tapered branches having deep threads cut
thereon substantially as shown and described.
Dated this 5th day of January 1894.
W. H. MUNNS,
Agent for Applicants.