IMPROVEMENTS IN TRAMWAYS AND ROLLING STOCK FOR USE WITH THE SAME, PARTS OF WHICH IMPROVEMENTS ARE ALSO APPLICABLE TO RAILWAYS AND TRACTION GENERALLY
Year: 1877

page_text: LETTERS PATENT to Herbert John Haddan, of the Firm of Herbert and Com-
pany, Patent Agents, of 67, Strand, in the City of Westminster, Civil Engineer,
for the Invention of "IMPROVEMENTS IN TRAMWAYS AND ROLLING STOCK FOR
USE WITH THE SAME, PARTS OF WHICH IMPROVEMENTS ARE ALSO APPLICABLE
TO RAILWAYS AND TRACTION GENERALLY." A communication from abroad by
Gustave Palmer Harding and John Lawton Haddan, both of Rue de la
Chaussée d'Antin, Paris, in the Republic of France.
PROVISIONAL SPECIFICATION left by the said Herbert John Haddan at the
Office of the Commissioners of Patents on the 7th March 1877.
HERBERT JOHN HADDAN, of the Firm of Herbert and Company, Patent Agents,
of 67, Strand, in the City of Westminster, Civil Engineer. "IMPROVEMENTS IN
TRAMWAYS AND ROLLING STOCK FOR USE WITH THE SAME, PARTS OF WHICH
IMPROVEMENTS ARE ALSO APPLICABLE TO RAILWAYS AND TRACTION GENERALLY."
A communication from abroad by Gustave Palmer Harding and John Lawton
Haddan, both of Rue de la Chaussée d'Antin, Paris, in the Republic of France.
The first part of the Invention has relation more particularly to obtaining facilities
for mounting inclines, by means of serrating or partly serrating one or more of the
flanges of the engine wheels, and preparing the groove of the tram rail for their
reception, either by serrating them also, or by filling in the grooves with a continuous
or intermittent surface of elastic or yielding material, capable of taking the form of
the tyre, and thereby obtaining the desired result of increased tractive hold or
power.
The elastic or other filling in referred to, may be used for other purposes than
that above stated, and if desired in conjunction with plain, polygonal, spiked,
roughened, or otherwise specially prepared flanges, in lieu of serrated ones.
The second part of the Invention relates more particlarly to the method to be
employed in preparing the rails for use with the serrated or other shaped tyre, flanges
described in this Specification.
The teeth or undulating projections or corrugations, which may be either solid or
hollow, elastic or rigid, may either be rolled in one with the rail, or affixed thereto
in lengths by rivets, or other convenient means, or a rope with or without a

page_text: strengthening core may be inserted in the channel of the tram rail, or a special form
of chain, naked or covered, or strips of india-rubber, wood, felt, or any convenient
combination of these or other materials may be used to fill or partially fill the
grooves, or tubes filled with sand or other material, cement, or any suitable composi-
tion may be used.
When Vignole's or ordinary rails are to be adapted, flanges may be connected to
them on the inside, or check rails used to restrain and confine the clastic or other
material, so as to render it suitable.
In contradistinction to Thompson's, and other Patentees of elastic tyres, it is
sometimes intended to combine elastic or soft flanges with wheels possessing rigid
tyres; but in no case using elastic tyres.
SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
tho said Herbert John Haddan in the Great Seal Patent Office on the
6th September 1877.
HERBERT JOHN HADDAN, of the Firm of Herbert and Company, Patent Agents,
"IMPROVEMENTS IN
of 67, Strand, in the City of Westminster, Civil Engineer.
TRAMWAYS AND ROLLING STOCK FOR USE WITH THE SAME, PARTS OF WHICH
IMPROVEMENTS ARE ALSO APPLICABLE TO RAILWAYS AND TRACTION GENERALLY."
A communication from abroad by Gustave Palmer Harding and John Lawton
Haddan, both of Rue de la Chanssée d'Antin, Paris, in the Republic of France.
The first part of the Invention has relation more particularly to obtaining facilities
for mounting inclines by means of serrating or partly serrating one or more of the
flanges of the engine wheels, and preparing the groove of the tram rail for their
reception, either by serrating them also, or by filling in the grooves with a continuous
or intermittent surface of elastic or yielding material, capable of taking the form of
the tyre and thereby obtaining the desired result of increased tractive hold or
power.
The clastic or other filling in referred to, may be used for other purposes than that
above stated, and if desired in conjunction with plain, polygonal, spiked, roughened,
or otherwise specially prepared flanges, in lieu of serrated ones.
Sometimes it is intended to improve the adhesion of the engine wheels by fitting
the treads with tyres of wood, paper, or of such like material, and to treat the
running surface with sand, metal filings, or any other convenient matter.
The treads may also be of copper or any soft metal, and may or may not be
treated with a renewable composition to secure always a gritty, roughened, or
adhesive surface.
The second part of the Invention relates more particularly to the method to be
employed in preparing the rails for use with the serrated or other shaped tyre flanges
described in this Specification.
The teeth, undulating projections, or corrugations, which may be either solid or
hollow, elastic or rigid, may either be rolled in one with the rail, or affixed thereto
in lengths by rivets or other convenient means, or a rope with or without a
strengthening core may be inserted in the channel of the train rail, or a special form
of chain, naked or covered, or strips of india-rubber, wood, felt, or tubes filled with
sand or other material, cements, or any suitable composition, or any convenient
combination of these or other materials may be used to fill or partially fill the
grooves.
When "Vignole's" or ordinary rails are to be adapted, flanges may be connected
to them on the inside, or check rails used to restrain and confine the elastic or other
material, so as to render it suitable for the purpose.
In contradistinction to Thompson's, and other Patentees of elastic tyres, it is some-
times intended to combine elastic or soft flanges with wheels possessing rigid tyres;
but in no case using elastic tyres.

page_text: To secure a better foundation for these rails, as also for tram rails generally, it is
purposed when sand is used as a foundation, to use paving stones or other materials
on either side of the rail and sleeper, of a greater depth than the rail and sleeper
combined, and the paving generally may likewise be so treated, viz., with a deep
stone and a shallow stono alternately.
The accompanying Drawing will serve to further explain the Invention in
which,-
Fig. 1 shows longitudinal section, and Fig. 2, corresponding cross section of a
tram rail fitted in its groove with rivets of a form calculated to fit the corrugations
on the wheel tyre.
Fig. 3 shows longitudinal section of corrugated flange in action with elastic groove
packing.
Fig. 4 shows cross section of a special rail with the groove countersunk to hold
down the rope or other groove packing.
Fig. 5 shows section of tread of a wheel fitted with flange of paper, impregnated
with a granular compound.
Fig. 6 shows a special section of a tram rail with clastic packing faced with a
metallic or indurated band.
Fig. 7 shows a wooden flange impregnated with a granular compound.
Fig. 8 shows longitudinal section of a tram rail with a polygonal wheel in combina-
tion with the packing.
Fig 9 shows a "Vignole's" rail treated with packing.
Fig. 10 shows cross section of Fig 3, as also the particular mode of sand founda-
tion to be adopted.
In witness whereof, I, the said Herbert John Haddan, have hereunto set my
hand and seal, this Sixth day of September, in the year of our Lord One
thousand eight hundred and seventy-seven.
TT T TIDD
H. J. HADD
AN
Russ