A NEW OR IMPROVED METALLIC SLEEPER
Year: 1886

page_text: I LORENTZ ALBERT GROTH K.G.V. Civil Engineer and Proprietor of the. Patent
Industrial and Financial Agency 30 Finsbury Pavement, London EC. do hereby.
declare the nature of said invention for "A NEW OR IMPROVED METALLIC SLEEPER
to be as follows:-
The sleeper is composed of two 1 irons of iron or steel laid either in the position
For I
The irons joined together by chairs present a sufficient resistance to flextion by
means of their vertical centre on each side of the chain, to which they may be rivetted,
they give equal resistance combined with greater bearing surface than U or I irons,
with a minimum of weight and require no bearing plates.
Their contact surfase with the ballast is very great consequently lateral displacement
is not to be feared.
When in the form it forms a trough which when filled with ballast becomes
very heavy.
The chairs are made of cast iron of inverted trough shaped section with clip pieces
rivetted on the top.
It is joined by split iron cutters for Vignole rails and by a wedge of wood for
double headed rails.
:
LORENTZ ALBERT GROTH.

page_text: "
I LORENTZ ALBERT GROTH, K.G.V. Civil Engineer and Proprietor of the Patent
Industrial and Financial Agency, 30 Finsbury Pavement, London E.C. do hereby
declare the nature of my said invention for "A NEW OR IMPROVED METALLIC
SLEEPER a communication to me from abroad by Pierre Kolgraf, Gentleman of
11 Rue de la Reinette, Brussels, Belgium 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 this, invention. is to construct a metallic sleeper at a lower cost and
with more durability than those used at present.
The accompanying drawings shew more fully the nature of the invention in which
Fig. 1 is a section of the sleeper.
Fig. 2 is a section of a modification of the same.
Figs. 3 a, b and c shew the application of the sleeper for Vignole rails, and
Figs. 4
band C the application for double headed rails.
The sleeper is composed of two irons, of iron or steel, laid either in the
position, figure 1, or in the position : 1, figure 2.
The irons joined together by chairs a, present a sufficient resistance to flextion
by means of their vertical centre on each side of the chair to which they may be
rivetted, they give equal resistance combined with greater bearing surface than
U or I irons with a minimum of weight and require no bearing plates.
:
Their contact surface, with the ballast is very great, consequently lateral displace-
ment is not to be feared.
When in the form, as shewn in figure 1, it forms a trough, which, when filled with.
ballast, becomes very heavy.
The chairs a are made of cast iron of inverted trough shaped section, with clip
pieces rivetted on the top.
It is, joined by split iron cutters for Vignote rails and by a wedge of wood for
double headed rails.
"
Having now particularly described and ascertained the nature of my said Invention
and in what manner the same is to be performed, I declare that what I claim is the
construction of a metallic sleeper, composed of two. 1 irons, of iron or steel, laid
either in the position or in the position 1, substantially as described and
illustrated.