Improvements in Cable Tramways and Railways.
Year: 1888

page_text: Date of Application, 18th Dec., 1888
Complete Specification Left, 8th Aug., 1889-Accepted, 21st Sept., 1889
PROVISIONAL SPECIFICATION.
Improvements in Cable Tramways and Railways.
I, SYDNEY PITT, of Sutton, in the County of Surrey, Gentleman, (a communication
to me from abroad by John Beavor Webb, residing in the City, County, and State of
New York, United States of America, Engineer,) do hereby declare the nature of this
invention to be as follows:-
This invention relates to a pressed steel flange yoke frame made in one piece and
arranged to support the rails and to carry the cable and cable mechanism in a
chamber provided therefor, it is likewise provided with an opening or openings
through which electric conductors or other bodies may extend.
The yoke frame is stamped from a single piece of wrought steel. The flanges
project upon one side and when the yoke frame is set in the ground they form an
important function in holding the yoke frame in the ground, the earth or other
filling surrounding and pressing into the spaces between the flanges.
The invention will be readily understood from the accompanying drawings, in
which
Figure 1, represents a vertical elevation partly in section, and
Figure 2, a central vertical section through Figure 1, partly in perpective.
The yoke frame itself is preferably of approximately the shape shown, and consists
generally, of the two arms H H, extending laterally and supporting the rails R R,
and two central supporting parts K K, upon which the slot irons E E, are supported,
and of a central opening G, through which the cable channel or tube passes. The
yoke frame is arranged with an upper flange B, and a lower flange C, and also with
internal flanges D, surrounding the openings F, arranged for the reception of electric
wires or other bodies. These internal flanges D, both assist in strengthening that
part of the yoke frame and also cooperate in holding the yoke frame firmly in the
ground when packed in position. The rails R, and slot irons E may be bolted to
the yoke frame or secured in any other suitable manner, the flange B serving as a
support and rest upon which they may be securely fastened.
Dated this 18th day of December 1888.
CARPMAEL & Co.,
Agents.
COMPLETE SPECIFICATION.
Improvements in Cable Tramways and Railways.
I, SYDNEY PITT, of Sutton, in the County of Surrey, Gentleman, (a communication
to me from abroad by John Beavor Webb, residing in the City, County, and State of
New York, United States of America, Engineer,) 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 :—
This invention relates to a pressed steel flange yoke frame made in one piece and
arranged to support the rails and to carry the cable and cable mechanism in a
chamber provided therefor, it is likewise provided with an opening or openings
through which electric conductors or other bodies may extend.
The present yoke frames generally employed are made of a number of pieces
bolted together which are liable to become loosened or detached, and which are, at
the best, expensive and insecure. In some cases cast iron yoke frames have been
made, which, however, are liable to break under the jar of travel, and consequently
have to be supported by various devices.

page_text: By my invention the cast iron sometimes employed is dispensed with, and the yoke
frame is stamped from a single piece of wrought steel. The flanges project upon one
side, and when the yoke frame is set in the ground they form an important function
in holding the yoke frame in the ground, the earth or other filling surrounding and
pressing into the spaces between the flanges.
The invention will be readily understood from the drawings, left with the provisional
specification in which
Figure 1 represents a vertical elevation partly in section, and
Figure 2 a central vertical section through Figure 1, partly in perspective.
The yoke frame itself is preferably of approximately the shape shown, and consists,
generally, of the two arms H H, extending laterally and supporting the rails R,R,
and two central supporting parts K K, upon which the slot irons E E, are supported,
and of a central opening G, through which the cable channel or tube passes. The
yoke frame is arranged with an upper flange B, and a lower flange C, and also with
internal flanges D, surrounding the openings F, arranged for the reception of electric
wires or other bodies. These internal flanges D, both assist in strengthening that
part of the yoke frame and also cooperate in holding the yoke frame firmly in the
ground when packed in position. The rails R, and slot irons E, may be bolted to
the yoke frame or secured in any other suitable manner, the flange B, serving as a
support and rest upon which they may be securely fastened. It is obvious that I may
add one or more additional openings to this as shown, as, for instance, an opening in
the bottom of the yoke frame, if desired.
It is obvious, likewise, that though the flange is shown as continuous around the
external edge of the yoke frame, and though that is the best construction a part of
may be omitted without losing altogether the benefits of my invention.
it
This pressed steel yoke frame is made in a press furnished with male and female
dies. The plate of steel suitably heated is placed between the dies and the dies being
brought together the male die presses the plate into the female die thereby producing
the flanges.
There is this difficulty in the manufacture which has to be overcome; if the hot a
steel is pressed into the female die by the male die, and the male die be permitted to
remain within the female die and the metal, then the metal will contract upon that
male die so as to prevent its subsequent withdrawal. On the other hand, if, after
pressing the yoke frame, the male die be suddenly withdrawn, then on cooling, the
steel will warp and get out of shape so as not to make the desired configuration. This
is a matter of great importance. It is necessary, therefore, that the male die be
made in sections so as to permit of parts of the male die being partially and gradually
withdrawn; other parts of the male die thereby being freed and permitted to yield
laterally to the contraction of the metal during the process of cooling. By gradually
relaxing the pressure during the cooling of the metal shrinkage is allowed whilst the
metal is still so held as to prevent warpage.
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. A pressed steel flanged yoke frame for cable roads having a continuous flange
integral therewith and surrounding its exterior edge, and likewise the cable opening,
substantially as described.
2. A pressed steel flanged yoke frame for cable roads made in one piece and having
the flanges C B integral therewith, substantially as described.
3. The pressed steel flanged yoke frame for cable roads made of one piece having
the flange B C, the arms H H, and intermediate supports K K, substantially as
described.
4. The pressed steel flanged yoke frame for cable roads consisting of a flanged
steel plate having the arms H H, the supports K K, and the openings F.F, sub-
stantially as described.

page_text: 5. The pressed steel flanged yoke frame for cable roads made of one piece having
the flange BC, the arms HH, the rails R R supported thereon, the intermediate
supports K K, and the slot irons E E, supported thereon, substantially as described.
Dated this 8th day of August 1889.
CARPMAEL & Co.,
Agents for the Applicant.