IMPROVEMENTS IN FIXING AND SECURING WOODEN KEYS IN RAILWAY CHAIRS
Year: 1869

page_text: LETTERS PATENT to Patrick Moir Barnett, of the Oity of Aberdeen,
North Britain, Civil Engineer, for the Invention of "IMPROVEMENTS
IN FIXING AND SECURING WOODEN KEYS IN RAILWAY CHAIRS."
Sealed the 9th July 1869, and dated the 13th January 1869.
PROVISIONAL SPECIFICATION left by the said Patrick Moir Barnett
at the Office of the Commissioners of Patents, with his Petition,
on the 18th January 1869.
I, PATRICK MOIR BARNETT, of the City of Aberdeen, North Britain,
5 Civil Engineer, do hereby declare the nature of the said Invention for
"IMPROVEMENTS IN FIXING AND SECURING WOODEN KEYS IS BAILWAY CHAIRS,"
to be as follows:-
This Invention consists in certain improvements in securing the
wooden keys which are ordinarily employed to fix the rails in the chairs.

page_text: In the jaw of the chair between which and the rail the wooden key is
placed a vertical groove or channel is formed, the same being continued
into the lower portion or bed of the chair so as to form a socket therein.
The wooden key having been placed in position an iron key provided
with a chisel point is driven into the before-mentioned groove or channel
until the point thereof enters the socket in the lower portion or bed of
the chair. As the iron key projects beyond the face of the jaw which
contains the groove or channel the wooden key is thereby compressed
and is consequently held firmly in position, and is not liable to displace-
ment and derangement as is the case with the modes of fixing such keys
hitherto in use.
SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said Patrick Moir Barnett in the Great Seal Patent
Office on the 12th July 1869.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, PATRICK
MOIR BARNETT, of the City of Aberdeen, North Britain, Civil Engineer,
send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Thirteenth day of January, in the
year of our Lord One thousand eight hundred and sixty-nine, in the
thirty-second year of Her reign, did, for Herself, Her heirs and suc-
cessors, give and grant unto me, the said Patrick Moir Barnett, Her
special licence that I, the said Patrick Moir Barnett, my executors,
administrators, and assigns, or such others as I, the said Patrick Moir
Barnett, my executors, administrators, and assigns, should at any time
agree with, and no others, from time to time and at all times thereafter
during the term therein expressed, should and lawfully might make,
use, exercise, and vend, within the United Kingdom of Great Britain
and Ireland, the Channel Islands, and Isle of Man, an Invention for
"C IMPROVEMENTS IN AND APPARATUS FOR FIXING AND SECURING WOODEN KEYS IN
RAILWAY CHAIRS," upon the condition (amongst others) that I, the said
Patrick Moir Barnett, my executors or administrators, by an instrument
in writing under my, or their, or one of their hands and seals, should
particularly describe and ascertain the nature of the said Invention

page_text: and in what manner the same was to be performed, and 'cause the
same to be filed in the Great Seal Patent Office within six calendar
months next and immediately after the date of the said Letters
Patent.
t
NOW KNOW YE, that I, the said Patrick Moir Barnett, do hereby
declare the nature of my said Invention, and in what manner the same
is to be performed, to be particularly described and ascertained in
and by the following statement, reference, being had to the accom-
panying Drawings, and to the figures and letters marked thereon, that
is to say:-
My said Invention consists in certain improvements in securing the
wooden keys which are ordinarily employed to fix the rails in the chairs.
In the jaw of the chair between which and the rail the wooden koy is
placed a vertical groove or channel is formed, the same being continued
into or through the lower portion or bed of the chair so as to form a
socket therein. The wooden key having been placed in position an iron
key provided with a chisel point is driven into the before-mentioned
groove or channel until the point thereof enters the socket in the lower
portion or bed of the chair. As the iron key projects beyond the face
of the jaw which contains the groove or channel the wooden key is
thereby compressed, and is consequently held firmly in position and is
not liable to displacement and derangement as is the case with the
modes of fixing such keys hitherto in use.
I will now proceed to refer to the accompanying Drawings from which
the nature of my said Invention will be more clearly understood.
Figure 1 is a plan view of my Invention, and Figure 2 is a section
through the line A, B, Figure 1. The same letters of reference denoto
the like parts in both Figures.
A is the chair; B, the rail; O, the wooden koy; D, the iron key; and
E, the groove or channel in the chair A.
'
Having thus described and ascertained the nature of my said Invention,
and the manner in which it is to be performed, I would observe in con-
clusion that what I consider novel and original, and therefore claim as
the Invention secured to me by the said herein-before in part recited
Letters Patent is, the combination and arrangement of parts and

page_text: mechanism as and for the purposes herein-before substantially described
and set forth.
In witness whereof, I, the said Patrick Moir Barnett, have here-
unto set my hand and seal, this Ninth day of July, in the year
of our Lord One thousand eight hundred and sixty-nine.