IMPROVEMENTS IN TOOTHED CHAINS FOR WORKING TOOTHED OR CHAIN WHEELS
Year: 1867

page_text: Lord One thousand eight hundred and sixty-four, grant to the said James
Slater, his executors, administrators, and assigns, the sole use, benefit, and
advantage of his Invention of "IMPROVEMENTS IN TOOTHED CHAINS FOR WORKING
TOOTHED OR CHAIN WHEELS," as expressed in the Specification filed in pursuance
of a proviso in the said Letters Patent contained.
And whereas since the date of the said Letters Patent, and of the filing of
the Final Specification thereof, I have been advised that it is not desirable to
retain as part of the said Specification and Letters Patent a certain portion
described in the said Final Specification and illustrated in the Drawings.
accompanying the same, to wit, that part described as a modification of the
general principle of my Invention; I am therefore desirous of disclaiming such
portion or portions of the said Specification and Drawings accompanying the
same as relates to the modification aforesaid.
NOW KNOW YE, that I, the said James Slater, by and with the leave of
Her Majesty's Attorney General, do hereby disclaim so much of the said
Specification as relates to the modification aforesaid; and I do hereby alter the
said Specification by omitting the parts struck out, so that the said Specification
when altered by my Disclaimer shall be in the words, letters, and figures
following (that is to say):-
:-
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, JAMES
SLATER, of Salford, in the County of Lancaster, Chain Maker, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent bearing date the Twelfth day of October, 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
James Slater, Her special license that I, the said James Slater, my
executors, administrators, and assigns, or such others as I, the said James
Slater, 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 "IMPROVEMENTS IN TOOTHED CHAINS FOR
WORKING TOOTHED OR CHAIN WHEELS," upon the condition (amongst others)
that 1, the said James Slater, 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

page_text: filed in the Great Seal Patent Office within six calendar months next and
immediately after the date of the said Letters Patent.
NOW KNOW YE, that I, the said James Slater, do hereby declare the
nature of my said Invention, and in what manner the same is to be per-
formed, to be particularly described and ascertained in and by the following
statement (that is to say) :-
The sides of the chain are composed of as many links as required, and
made of any desired pitch and strength. The distance between the inner
links depends upon the thickness of the wheel, but over the pins which
constitute the pitch and hold the links together, I place hoops or ferrules so
fitted so fitted that they can turn on the pins but not shake, which hoops or
ferrules are intended to substitute the solid links or pins before in use.
.
These improvements will be clearly understood by referring to the figures and
letters on the accompanying Sheet of Drawings, in which Fig. 1 is a side
elevation of a toothed or chain wheel having geared into it one of my improved
toothed chains, the chain being partly in elevation and partly in section, Fig. 2
a plan of the chain only, and Figs.-3-and-4-are-similar-views of another-chain
wheel-and-toothed chain-modified-to-suit-it.
a, in Fig. 1, represents the toothed wheel; b, in Figs. 1 and 2, the sides or links
of the chain; c, the pins for holding them together; and d, the hoops or ferrules
which are fitted to the pins. In this arrangement it will be seen that there is
a space between each hoop or ferrule for the teeth of the wheel to gear into,
and that the hoops or ferrules form the teeth which gear into the spaces
between the teeth of the wheel, and it is evident that if the chain is applied
to a wheel of the same diameter but having only half the number of teeth
there will be an unoccupied space in the chain at the side of each space
occupied by a tooth of the wheel, or in other words that between two spaces
occupied by two teeth there will be one space of the chain unoccupied.
In Fig. 3 I-represent a modified-arrangement-of- my improved-toothed chain
applied-to-a-wheel-of-the-same-diameter-as that-shewn-in-Fig.-1,-but-with-half-the
number-of-teeth,-and-in-Fig.-4-a-plan of the chain only. Instead of employing
single-hoops-or-ferrules-as-before-described, I-form-two-together-as-shewn-at-e-and
place-them-loose-en-pins-rivetted-to-the-links,-the-double-hoops-entering-the-spaces
between-the-teeth-of the-wheel-and-the spaces between the double hoops-gearing
en-the-teeth-of-the-wheel.
Having now described the nature and particulars of my said Invention,
and the manner in which the same is to be performed, I desire it to be

page_text: understood that I claim the improvements in toothed chains for working toothed
or chain wheels as herein described and illustrated in the accompanying Sheet
of Drawings.
In witness whereof, I, the said James Slater, have hereunto set my
hand and seal, this Eleventh day of April, in the year of our Lord
One thousand eight hundred and sixty-five.
Signed, sealed, and delivered by
the within-named James Slater
in the presence of
E. J. HUGHES,
Patent Agent,
JAMES SLATER. (L.s.)
In witness whereof, I, the said James Slater, have hereunto set my hand
and seal, this Thirtieth day of December, in the year of our Lord 1
One thousand eight hundred and sixty-seven.

page_text: LETTERS PATENT to John Ford, of Reading, in the County of Berks,
Wheelwright, for the Invention of "IMPROVEMENTS IN MEANS FOR SECURING
WHEELS, PULLEYS, CRANKS, AND OTHER ARTICLES ON THEIR SHAFTS OR
AXLES."
Sealed the 3rd March 1868, and dated the 5th September 1867.
PROVISIONAL SPECIFICATION left by the said John Ford at the Office
of the Commissioners of Patents, with his Petition, on the 5th September
1867.
I, JOHN FORD, of Reading, in the County of Berks, Wheelwright, do
hereby declare the nature of the said Invention for "IMPROVEMENTS IN
MEANS FOR SECURING WHEELS, PULLEYS, CRANKS, AND OTHER ARTICLES ON THEIR
SHAFTS OR AXLES," to be as follows:-
The Invention has for its object improvements in means för securing
wheels, pulleys, cranks, and other articles on their shafts or axles.
When applying the Invention to securing railway wheels on their shafts or
axles I key the wheel on to the axle as usual, and form a recess in the nave
or boss to receive a ring flush with the outer face of the nave or boss, and I
form a shallow groove in the shaft or axle corresponding with the recess in
the nave or boss of the wheel, the outer end of the key being made flush with
the shaft or axle and the shallow groove. I then pass a ring (previously
heated) over the end of the shaft or axle, and force it into the recess in the
nave or boss of the wheel; this ring on cooling shrinks within the shallow
groove formed in the shaft or axle, and thereby firmly secures the wheel

page_text: thereto, the wheel being held between the shoulder on the shaft or axle and
the shrunk ring which becomes firmly secured to the shaft or axle and at the
same time holds the key firmly in position.
Similar means are employed, with slight modifications, as will be readily
understood to secure other articles to their shafts or, axles.
SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said John Ford in the Great Seal Patent Office on the 5th March
1868.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, JOHN
FORD, of Reading, in the County of Berks, Wheelwright, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Fifth day of September, in the year of our Lord One
thousand eight hundred and sixty-seven, in the thirty-first year of Her reign,
did, for Herself, Her heirs and successors, give and grant unto me, the said
John Ford, Her special licence that I, the said John Ford, my executors,
administrators, and assigns, or such others as I, the said John Ford, 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 "IMPROVEMENTS IN MEANS FOR
SECURING WHEELS, PULLEYS, CRANKS, AND OTHER ARTICLES ON THEIR SHAFTS OR
AXLES," upon the condition (amongst others) that I, the said John Ford, 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, and in what manner the same was to be per-
formed, 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.
NOW KNOW YE, that I, the said John Ford, do hereby declare the
nature of
my said Invention, and in what manner the same is to be per-
formed, to be particularly described and ascertained in and by the following
statement thereof, that is to say:-
The Invention has, for its object improvements in means for securing
wheels, pulleys, cranks, and other articles on their shafts or axles.
When applying the Invention to securing railway wheels on their shafts or

page_text: In cases where there is no shoulder a¹ on the shaft or axle a second shallow
groove similar to a² may be formed in the shaft or axle at that part, and a
ring or collar d may (previous to the application of the wheel or other article)
be applied to such shaft or axle, and allowed to shrink by cooling into such
second shallow.groove, thereby forming a suitable shoulder for the wheel or
other article.
Having thus described the nature of my said Invention, and the mode in
which I carry the same into effect, I would have it understood that I do not
confine myself to the precise details herein shewn and described, but what I
do claim is, the employment of rings or collars d, applied in the manner sub-
stantially as herein shewn and described, for securing wheels, pulleys, cranks,
and other articles on their shafts or axles.
In witness whereof, I, the said John Ford, have hereunto set my hand
and seal, this Second day of March, in the year of our Lord, One
thousand eight hundred and sixty-eight.
JOHN FORD. (L.8.)