IMPROVEMENTS IN BREAK BLOCKS
Year: 1864

page_text: LETTERS PATENT to George Lindsley, of Paddington, in the County of
Middlesex, Engineer, for the Invention of "IMPROVEMENTS IN BREAK
BLOCKS."
PROVISIONAL SPECIFICATION left by the said George Lindsley at the
Office of the Commissioners of Patents, with his Petition, on the
29th September 1864.
I, GEORGE LINDSLEY, of Paddington, in the County of Middlesex, Engineer,
do hereby declare the nature of the said Invention for "IMPROVEMENTS IN
BREAK BLOCKS," to be as follows:-
My Invention consists in introducing at intervals into the surface of the
ordinary wooden break block, a gritty composition which not only increases
the wear of the block but also affords additional biting or gripping power
or increases the friction between the block and the wheel.
I do not limit myself to any particular form of recess or aperture for holding
the composition in the blocks, nor to any one composition, but 1 find a very
good form of aperture to be a circular hole extending through or nearly-
through to the back of the block, and at an angle with the face of the block,
while à suitable composition for filling the apertures is a mixture of resin and

page_text: sand applied hot and allowed to cool in the apertures. My improved break
blocks are applicable to all purposes where wooden break blocks may be
used.
SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said George Lindsley in the Great Seal Patent Office on the
29th March 1865.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, GEORGE
LINDSLEY, of Paddington, in the County of Middlesex, Engineer, send
greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Twenty-ninth day of September, in the year of our
Lord One thousand eight hundred and sixty-four, in the twenty-eighth year of
Her reign, did, for Herself, Her heirs and successors, give and grant unto me,
the said George Lindsley,, Her special licence that I, the said George
Lindsley, my executors, administrators, and assigns, or such others as I,
the said George Lindsley, 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 "Im-
PROVEMENTS IN BREAK BLOCKS," upon, the condition, (amongst others), that I,.
the said George Lindsley, my executors or administrators, by an instru-
ment in writing under my, or their, or one of their hands and seals, should
particularly describe and ascertain the nature of the said Invention, 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 imme-
diately after the date of the said. Letters Patent.
NOW KNOW YE, that I; the said George-Lindsley, 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 fol-
lowing statement thereof, that is to say:
My Invention consists in introducing at: intervals into the surface of! the
ordinary wooden break block a gritty composition which not only increases
the durability of the block but also affords additional biting: or gripping power,
or increases the friction between the block and, the wheel.
I do not limit myself to any particular form of recess or aperture for hold-

page_text: ing the composition in the blocks, nor to any one composition, but I find a
very good form of aperture to be a circular hole extending through or nearly
through to the back of the block, and at an angle with the face of the block
while a suitable composition for filling the apertures is a mixture of resin and
sand applied hot, and allowed to cool in the apertures. My improved -break
blocks are applicable to all purposes where wooden break blocks may be
used.
In witness whereof, I, the said George Lindsley, have hereunto set my
hand and seal, this Twenty-eighth day of March, One thousand
eight hundred and sixty-five.
GEORGE LINDSLEY. (L.S.)