Improvement in the Manufacture of Railway Chairs, Railway Pot Chairs or Sleepers, and Railway Sleepers with Chairs combined.
Year: 1894

page_text: Date of Application, 16th Oct., 1894
Complete Specification Left, 13th July, 1895-Accepted, 31st Aug., 1895
PROVISIONAL SPECIFICATION.
"
Improvement in the Manufacture of Railway Chairs, Railway
Pot Chairs or Sleepers, and Railway Sleepers with Chairs
combined.
ANDREW ERSKINE MUIRHEAD Forgeman Cart Forge Crossmyloof near-
Glasgow I do hereby declare the nature of this invention to be as follows:-
I take a blank or billet of iron or steel, rolled or stamped corresponding to the
size of chair required, and I run a slit, split or cut (from each end, or from near
each end,) towards the middle of said blank or billet. Or I may start one slit at
or near one end and the other slit near where first cut ends, both going in same
direction. Or I may start slits near middle and run them towards each end.
Said slits enable me to bend up flaps to form gap to hold rail.
With pot chair or sleeper I proceed much in same way.
With sleeper and chairs combined I proceed in the same way only my blank is
so much longer.
Blanks or billets may be plain flats, or may have ridge or ridges, continuous or
intermittant or other form as found most convenient.
October Fifteenth 1894.
ANDREW ERSKINE MUIRHEAD.
COMPLETE SPECIFICATION.
Improvement in the Manufacture of Railway Chairs, Railway
Pot Chairs or Sleepers, and Railway Sleepers with Chairs.
combined.
ANDREW ERSKINE MUIRHEAD Forgeman, Cart Forge, Crossmyloof near
Glasgow, 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 :-
I take a blank or billet of iron or steel, rolled or stamped corresponding to the
size of chair required and I run a slit, split or cut (from each end, or from near
each end) towards the middle of said blank or billet.
Or I may start one slit at or near one end and the other slit near where first cut
ends both going in the same direction, or I may start slits near middle and run
them towards each end. Said slits enable me to bend up flaps to form gaps to
hold rail. With pot chair or sleeper 1 proceed much in the same way.
With sleepers and chairs combined I proceed in the same way only my blank is
so much longer.
Blanks or billets may be plain flats or may have ridge or ridges continuous or
intermittent or other form as found niost suitable.
I will now proceed to describe with reference to the accompanying drawings the
manner in which my invention is to be performed.
Figure 1 represents a blank or billet which has been rolled or stamped suitable
for the form and size of chair required, a slit is cut from each end from the

page_text: points a to a', the parts b and bare then bent up to form the flaps c and c¹ as
indicated by the dotted lines.
Figure 2 represents a form of blank or billet in which the slits are both cut from
the same end, the first being cut from d to d¹ and the second from e to e¹ the
parts and being then bent up to form the flaps.
Figure 3 represents another form of blank or billet in which the slits are cut
from g to gl and from h to h¹ the parts i and it being bent up as in the previous
cases and shown by the dotted lines.
Figure 4 represents a blank or billet rolled or stamped to form a sleeper with
chairs combined. The forming of the gaps m and m² may be accomplished in the
manner herein-before described and illustrated by Figures 1, 2 and 3.
Having now particularly described and ascertained the nature of my said inven-
tion, and in what manner the same is to be performed, I declare that what I
claim is :-
} The slitting or splitting of the blank or billet to form the jaws of chair.
'
Dated this Eleventh day of July 1895.