Improvements in Rail Bonds.
Year: 1899

page_text: 11th Sept.. 1899-Accepted,
4900
44th Sept.. 1899-Acceptcu,
44th Sept.. 1899-Acceptcu
COMPLETE DIE
Improvements in Rail Bonds.
CHARLES HERBERT GADSBY, of 20, Victoria Street, Westminster, in the County
London, Consulting Engineer, do hereby declare the nature of this invention
in what manner the same is to be performed, to be particularly described
ascertained in and by the following statement:
My invention relates to rail bonds and by it certain advantages are obtained.
Rail bonds as usually constructed consist of two heads and a shank piece
tending between the said heads, the said heads being attached by rivets or
eir equivalents to the webs of contiguous rails each head being provided with
single rivet or its equivalent. A drawback to such forms lies in the fact that
ere is a considerable amount of play of the rails and of the shank piece between
e two heads which allows of a certain amount of angular movement of each
ead round the geometric axis of the rivet or its equivalent.
Such angular movement tends to loosen the rivets in the web and so to increase
he electrical resistance between rail and rail and thus diminish efficiency in
orking. By my invention this drawback is obviated.
In order that my invention may be more readily understood I have appended
ereto a sheet of drawings illustrating certain forms of my invention.
In the figures of these drawings similar numerals of reference indicate similar
or equivalent parts.
In the drawings.
Figure I, is a side elevation of one form of my rail bond.
Figure II is a plan thereaf
Figure III is an enlarged side elevation of one of the heads.
Figure IV is a plan thereof.
Figure V is a similar plan but showing the rivets with their heads closed over
he web of the rail.
Figures VI and VII are respectively a side elevation and a plan of a modification.
Figure VIII is an end elevation of the said modification shown in position on
the rail but before the rivet heads are closed down.
unite
Referring now to Figures I to V, 1 and 2 are the heads of the rail bond and 3
is the shank piece in this case consisting of two separate bars rods or strips 4
and 5 preferably of rectangular shape in cross section. The rods 4 and
at each end with the heads 1 and 2 and bend apart from one another close to the
heads and run parallel for the rest of their length as is shown in Figure I for
5 a purpose hereinafter to be set forth.
From each head project, and at right angles thereto, two rivets 6 and 7. These
rivets are intended to pass through the web of a rail and be closed down thereon
as shown in Figure V, in which figure the web of the rail is represented at 8.
It will be seen that in this form of rail bond not only do the two rods con-
to lie between the fish
4stituting the shank piece separate as seen in elevation (Figure 1) but they lie
in the same plane as seen in plan (Figure II). This form of rail bond is a form
specially adapted for the case where the shank piece
the web of the rail. When the bond and fish plates are in position
Figure II is a pian
Figure
Figure
III is an enlarged side elevation or on
IV is a plan thereof.
Figure V is a similar plan but showing the rivets with their heads closed over
he web of the rail.
Figures VI and VII are respectively a side elevation and a plan of a modification.
Figure VIII is an end elevation of the said modification shown in position on
the rail but before the rivet heads are closed down.
Referring now to Figures I to V, 1 and 2 are the heads of the rail bond and 3
is the shank piece in this case consisting of two separate bars rods or strips 4
and 5 preferably of rectangular shape in cross section. The rods 4 and 5 unite
at each end with the heads 1 and 2 and bend apart from one another close to the
heads and run parallel for the rest of their length as is shown in Figure I for
a purpose hereinafter to be set forth.
From each head project, and at right angles thereto, two rivets 6 and 7. These
rivets are intended to pass through the web of a rail and be closed down thereon
as shown in Figure V, in which figure the web of the rail is represented at 8.
It will be seen that in this form of rail bond not only do the two rods con-
stituting the shank piece separate as seen in elevation (Figure 1) but they lie
in the same plane as seen in plan (Figure II). This form of rail bond is a form
specially adapted for the case where the shank piece is to lie between the fish
the web of the rail. When the bond and fish plates are in position

page_text: it will be seen that the fish plate bolts come between the rods 4 and 5, the
position of such bolts being indicated by the dotted circles 9.
The advantages of this form of bond will now be seen.
Each head having at least two rivets it is obvious that whatever may be the
play between the two rails or of the bond as a whole, or of its shank piece there
can be no angular movement round the axes of the rivets. Further vertical play
of the shank piece which would tend to produce such angular movement should
one of the rivets become loose or broken is obviated by the presence of the bolts 9
between the rods 4 and 5. Great practical advantages are obtained by such
means. I have illustrated the shank piece of this form of my invention as
consisting of two rods, but I may employ any other convenient known form of
shank piece in conjunction with my double rivet form of head.
In Figures VI, VII and VIII I show a modification of my invention. In this
case it will be seen that the two rivets of each head instead of being placed side
by side as in the other form are placed vertically one above the other.
When desired I may have three or even more rivets upon each head but usually
there is no advantage in having more than two rivets upon each head.
I use the
term rivet in its generic sense and include under that term not only rivets,
properly so called, but also nipples and other equivalent devices known in the
art.
When the bond, or the shank piece thereof, is to be embedded, as for example
in concrete, I find it convenient to cover the shank piece with a lapping or
braiding of hemp or other like material. Owing to the elasticity of this covering
a yielding action is obtained and the shank piece has a considerable play. This
device further tends to obviate the angular movement of the rivet in the head.
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
1. In a rail bond the employment of two or more rivets on each head for the
purpose set forth.
2. In a rail bond the combination of a shank piece and two heads each head
having at least two rivets substantially as and for the purpose set forth.
3. In a rail bond the employment of a covering on the shank piece substantially
as and for the purpose set forth.
4. The specific form of rail bond set forth with reference to Figures I to V
inclusive.
5. The specific form of rail bond set forth with reference to Figures VI, VII
and VIII.
For the Applicant,
J. G. LORRAIN, M.I.E.E., M.I.Mech.E.,
Norfolk House, Norfolk Street, London, W.C.,
Chartered Patent Agent.