COMBINED CHAIRS AND SLEEPERS, APPLICABLE TO THE PERMANENT WAY OF RAILWAYS AND TRAM- WAYS
Year: 1878

page_text: LETTERS PATENT to John Greenfield, of Northlands, Wandsworth, in the
County of Surrey, Gentleman, for the Invention of "COMBINED CHAIRS AND
SLEEPERS, APPLICABLE TO THE PERMANENT WAY OF RAILWAYS AND TRAM-
WAYS."
Sealed the 18th June 1878, and dated the 11th January 1878.
PROVISIONAL SPECIFICATION left by the said John Greenfield at the Office
of the Commissioners of Patents on the 11th January 1878.
JOHN GREENFIELD, of Northlands, Wandsworth, in the County of Surrey, Gentle-
"COMBINED CHAIRS AND SLEEPERS, APPLICABLE TO THE PERMANENT WAY
OF RAILWAYS AND TRAMWAYS."
man.
The object of my Invention consists of a combined chair or chairs and sleeper for
the permanent way of railways or tramways, so formed that when laid there is no
necessity for gauging, as the chair or chairs and sleeper are cast in one piece to the
gauge required; and further, the sleeper is of great strength, and so proportioned or
shaped as to prevent the slipping that usually takes place in permanent ways as
now constructed.
The accompanying Drawing illustrates the construction of my combined chair or
chairs and sleeper, Figure 1 being a side view; Fig. 2, sectional elevation;
Fig. 3, under plan; and Fig. 4, view of the web or tie bar formed with corrugations,
as shewn, although such web or tie bar may, if desired, be plain.
In these Figures A represents the chairs cast with sleeper B, such sleeper being
preferably of the form shown to give strength and prevent slipping; C, web or tie
bar, formed as shewn, or, if desired, same may be plain; D, web on under side of
sleeper, which when the sleeper and chair are combined, laid, and wedged up,
prevents the loosening, which occurs in sleepers as ordinarily constructed; and further,
same forms a grip or stoppage in wedging.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed
by the said John Greenfield in the Great Seal Patent Office on the 11th
July 1878.
JOHN GREENFIELD, of Northlands, Wandsworth, in the County of Surrey, Gentle-
man. COMBINED CHAIRS AND SLEEPERS, APPLICABLE TO THE PERMANENT WAY
OF RAILWAYS AND TRAMWAYS."
The object of my Invention consists of combined chair or chairs and sleeper for
the permanent way of railways or tramways, so formed that when laid there is no
necessity for gauging, plugging, boring, and bolting, as usually-adopted, as the chair
or chairs and sleeper are cast in one piece to the gauge required; and further, the
sleeper is of great strength, and so proportioned or shaped as to prevent the slipping
that usually takes place in permanent ways as now constructed.
The accompanying Drawings illustrate the construction of my combined chair or
chairs and sleeper, Fig. 1 being a side view; Fig. 2, sectional elevation; Fig. 3,
under plan; and Fig. 4, view of the web or tie bar formed with corrugations, as
shewn, although such web or tie bar may, if desired, be plain.
In these Figures A represents the chairs, cast with sleeper B, such sleeper being
preferably of the form shown to give strength and prevent slipping; C, web or tie
bar, formed as shown, or, if desired, same may be plain; D, web on under side of
sleeper, which when the sleeper and chair are combined, laid, and wedged up,
prevents the loosening which occurs in sleepers as ordinarily constructed; and further,
same forms a grip or stoppage in wedging.
Having now particularly described and ascertained the nature and object of the
said Invention, and in what manner the same is to be performed or carried out in
practice, I may remark that although I have herein-before described and illustrated
by the accompanying Drawings the form of construction of my Invention I prefer
to adopt, yet I do not confine myself to any particular form of chair or any par-
ticular form of sleeper separately considered, what I do claim being the combined
chairs and sleepers applicable to the permanent way of railways and tramways,.
substantially as herein-before set forth and described.
In witness whereof, I, the said John Greenfield, have hereunto set my hand
and seal, this Ninth day of July, in the year of our Lord One thousand
eight hundred and seventy-eight.
Witness,
W. HILLIER;.
21, Cockspur Street,
- Charing Cross.
JOHN GREENFIELD. (LS.)