IMPROVEMENTS IN THE MANUFACTURE OF TOOTHED WHEELS FOR GEARING SHAFTS AXLES, AND SPINDLES
Year: 1866

page_text: LETTERS PATENT to Robert Mathers, of Leeds, in the County of York,
Engineer, for the Invention of "IMPROVEMENTS IN THE MANUFACTURE
OF TOOTHED WHEELS FOR GEARING SHAFTS AXLES, AND SPINDLES."
Sealed the 9th July 1866, and dated the 11th January 1866.
PROVISIONAL SPECIFICATION left by the said Robert Mathers at
the Office of the Commissioners of Patents, with his Petition, on the
11th January 1866.
I, ROBERT MATHERS, of Leeds, in the County of York, Engineer, do
hereby declare the nature of the said Invention for "IMPROVEMENTS IN
THE MANUFACTURE OF TOOTHED WHEELS FOR GEARING SHAFTS, AXLES, AND
SPINDLES," to be as follows:-
This Invention has for its object improvements in the manufacture of
toothed wheels for gearing shafts, axles, and spindles. For these purposes
in order to make toothed wheels (cog or spur wheels and mitre or bevil
wheels) which shall in their working with ordinary metal wheels produce
less noise than when using gearing composed of toothed wheels wholly of
metal, I construct toothed wheels in the following manner :-On the
outsides of each wheel I employ plates or discs of wrought or cast metal,
and between these two outside plates or discs I employ a series of discs
partly of sheet metal and partly of leather, or of hide, or of skin, or of
paper, preferring for the inner metal discs of zinc or of other comparatively
soft metal, though discs of hard metal such as are used in forming the
[Price 8d.1

page_text: two outside discs may be employed. When forming the outside discs of
cast metal I prefer to cast them with the teeth thereon, and I further prefer
that the discs of thin metal used intermediate of the outside discs or plates
should be stamped or cut out with the teeth thereon, and such is the case
in regard to the discs of leather, or of hide, or of skin, or of paper, so that
when a series of discs composing a wheel are brought, pressed; and held
together by rivets or otherwise, the teeth of the wheel may at niost require
to be dressed; but, if preferred, the cutting of the teeth may take place
after combining and fixing the several discs together. It will be found
that wheels thus produced when working in gear with ordinary metal
wheels will render the gearing comparatively free from noise,
SPECIFICATION in pursuance of the conditions of the Letters Patent
filed by the said Robert Mathers in the Great Seal Patent Office
on the 11th July 1866.
ΤΟ
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, ROBERT
MATHERS, of Leeds, in the County of York, Engineer, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Eleventh day of January, in the year of our
Lord One thousand eight hundred and sixty-six, in the twenty-ninth year
of Her reign, did, for Herself, Her heirs and successors, give and grant
unto me, the said Robert Mathers, Her special licence that I, the said
Robert Mathers, my executors, administrators, and assigns, or such
others as I, the said Robert Mathers, 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 THE MANUFACTURE OF TOOTHED
WHEELS FOR GEARING SHAFTS, AXLES, AND SPINDLES," upon the condition
(amongst others) that I, the said Robert Mathers, 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
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.

page_text: NOW KNOW YE, that I, the said Robert Mathers, do hereby declare
the nature of the said Invention, and in what manner the same is to be
performed, to be particularly described and ascertained in and by the
following statement thereof, that is to say: -
This Invention has for its object improvements in the manufacture of
toothed wheels for gearing shafts, axles, and spindles. For these purposes
in order to make toothed wheels (cog or spur wheels and mitre or bevil
wheels) which shall in their working with ordinary metal wheels produce
less noise than when using gearing composed of toothed wheels wholly of
metal, I construct toothed wheels in the following manner:-On the
outsides of each wheel I employ plates or discs of wrought or cast metal,
and between these two outside plates or discs I employ a series of discs
partly of sheet metal and partly of leather, or of hide, or of skin, or of
paper, preferring that the inner metal disc should be of zinc or of other
comparatively soft metal, though discs of hard metals such as are used in
forming the two outside discs may be employed. When forming the out-
side discs of cast metal I prefer to cast them with the teeth thereon, and
I further prefer that the discs of thin metal used intermediate of the out-
side discs or plates should be stamped or cut out with the teeth thereon,
and such is the case in regard to the discs of leather, or of hide, or of skin,
or of paper, so that when a series of discs composing a wheel are brought,
pressed, and held together by rivets or otherwise, the teeth of the wheel
may at most require to be dressed; but, if preferred, the cutting of the teeth
may take place after combining and fixing the several discs together. It
will be found that wheels thus produced when working in gear with ordi-
nary metal wheels will render the gearing comparatively free from noise.
Having thus stated the nature of my said Invention, I will proceed more
fully to described the manner of performing the same.
DESCRIPTION OF THE DRAWINGS.
Figure 1 is an elevation of a toothed wheel or pinion; Figure 2 is a
cross section of a wheel or pinion, showing a combination and arrangement
according to my Invention of leather, or hide, or paper, with discs of zinc,
or of brass, or other metal securely held together by rivets; Figure 3 is a
cross section of a mitre wheel, showing the discs of leather, or hide, or
paper, and the metallic discs; Figure 4 is a cross section of a bevil wheel
or pinion.
The discs of leather, or hide, or paper, and the discs of metal ccm-
posing the same, are combined and built up as a spur pinion, and the

page_text: several parts are retained and held together by rivetting. I prefer to
subject each separate piece of leather or paper to pressure to consolidate or
harden them, and after the parts are combined they are again subjected to
pressure and secured by the rivets, or it may be by screws, whilst so held.
I also prefer to use hard rolled zinc or brass, and I roughen the surfaces of
the discs of metal to give better holding or support to the other material.
In witness whereof, I, the said Robert Mather, have hereunto set my
hand and seal, this Seventh day of July, in the year of our Lord
One thousand eight hundred and sixty-six.
ROBERT MATHERS. (L.S.)