IMPROVEMENTS IN MACHINERY FOR GRINDING AND POLISHING ROUND METAL BARS AND TUBES
Year: 1876

page_text: LETTERS PATENT to John Octavius Butler and Ambrose Edmund Heath Buckley
Butler, both of the Kirkstall Forge, Leeds, in the County of York, Ironmasters,
for the Invention of "IMPROVEMENTS IN MACHINERY FOR GRINDING AND
POLISHING ROUND METAL BARS AND TUBES."
Sealed the 28th October 1876, and dated the 11th August 1876.
PROVISIONAL SPECIFICATION left by the said John Octavius Butler and
Ambrose Edmund Heath Buckley Butler at the Office of the Commissioners
of Patents on the 11th August 1876.
JOHN OCTAVIUS BUTLER and AMBROSE EDMUND HEATH BUCKLEY BUTLER, both
of the Kirkstall Forge, Leeds, in the County of York, Ironmasters. "IMPROVE-
MENTS IN MACHINERY FOR GRINDING AND POLISHING ROUND METAL BARS AND
TUBES."
The bars or tubes to be operated upon are turned round and moved endwise by
means of obliquely disposed revolving rolls, discs, or rings, as described in the
Specification of Letters Patent granted to James Robertson on the 20th day of
December 1869, Number 3677, or by revolving discs, as described in the Speci-
fication of Letters Patent granted to George Walter Dyson and Henry Arthur Hall
on the 31st day of October 1870, No. 2856.
In the Patent of Robertson above referred to the grinding and polishing is
effected by a revolving grindstone or other instrument acting on the bar or tube to
be ground or polished, which is supported on a stationary or revolving block. Now
our Invention consists in the use of a combination of two or more grindstones or
other grinding or polishing instruments which act on different parts of the circum-
ference of the bar or tube, thereby producing a more rapid effect and causing the
pressure of one instrument to be counteracted by the pressure of another.
By varying the nature and quality of the grinding and polishing instruments
both the operations of grinding and polishing can be performed simultaneously.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said John Octavius Butler and Ambrose Edmund Heath Buckley Butler
in the Great Seal Patent Office on the 9th February 1877.
16
JOHN OCTAVIUS BUTLER and AMBROSE EDMUND HEATH BUCKLEY BUTLER, both
of the Kirkstall Forge, Leeds, in the County of York, Ironmasters. IMPROVE-
MENTS IN MACHINERY FOR GRINDING AND POLISHING ROUND METAL BARS AND
TUBES."
The bars or tubes to be operated upon are turned round and moved endwise by
means of obliquely disposed revolving rolls, discs, or rings, as described in tho
Specification of Letters Patent granted to James Robertson on the 20th day of
December, 1869, Number 3677, or by revolving discs, as described in the Specification
of Letters Patent granted to George Walter Dyson and Henry Arthur Hall on the
31st day of October, 1870, Number 2856.
In the Patent of Robertson above referred to the grinding and polishing is
effected by a revolving grindstone or other instrument acting on the bar or tube to
be ground or polished, which is supported on a stationary or revolving block. Now
our Invention consists in the use of a combination of two or more grindstones or
other grinding or polishing instruments which act on different parts of the circum-
ference of the bar or tube, thereby producing a more rapid effect and causing the
pressure of one instrument to be counteracted by the pressure of another.
By varying the nature and quality of the grinding and polishing instruments
both the operations of grinding and polishing can be performed simultaneously.
And in order that our Invention may be fully understood and readily carried into
operation we will proceed to describe the accompanying two Sheet of Drawings.
On Sheet 1 Fig. 1 is an end elevation and Fig. 2 a side view, and on Sheet 2
Fig. 3 is a plan of our improved machinery for grinding and polishing round metal
bars and tubes. a, a, are two pairs of revolving rolls or discs constructed and
arranged in the manner described in the Specification of Letters Patent granted to
James Robertson on the 20th day of December, 1869, Number 3677, by which the
bar or tube b is turned round and traversed endwise through the machine.
We wish to observe here that the bar or tube may be turned round and traversed
endwise by revolving discs, as described in the Specification of Letters Patent
granted to George Walter Dyson and Henry Arthur Hall on the 31st day of October,
1870, Number 2856.
Between the two pairs of revolving rolls or discs a, a, or in any other convenient
position we place the three grinding or polishing instruments c, d, and e, which we
prefer to make of a combination of einery and other materials, but any other
suitable grinding or polishing substances may be used. The grinding or polishing
instrument c is fixed on an axle revolving in bearings in the weighted lever c¹,
whose fulcrum stud f¹ is in the standard f fixed to the foundation plate, the other
end of the lever c¹ rests upon the end of the regulating screw c³, and the amount of
pressure of the grinding or polishing instrument on the bar or tubo b is regulated
by the weights c² and the screw c³.
The grinding or polishing instrument d is fixed on an axle revolving in the
elbow lever d which works on the fulcrum stud d'; to the lever d is fixed the
arm d³, the end of which has a slot, as shewn in Fig. 3, fitting on the regulating
screw d³, against which the end of the arm de acts, and the amount of pressure of
the grinding or polishing instrument, on the bar or tube b is regulated by the
weights d² and tho screw d³.
The grinding or polishing instrument e is also fixed on an axle revolving in the
elbow lever e¹ which works on the fulcrum stud *, and the amount of pressure of
the grinding or polishing instrument e against the bar or tube b is regulated by the
screw e and the weights e². All the instruments c, d, and e, are driven by bands
passing round small pulleys, as shewn, or in any other convenient manner. By
this means as the bar & traverses through the machine it is ground and polished by

page_text: the instruments c, d, and e, which act on different parts of the circumference, thereby
expediting the operations, and the pressure of one instrument is counterbalanced by
the pressure of the others.
We wish to observe here that in some cases only two grinding or polishing
instruments may be used and in other cases more than three may be used, our
Invention consisting in supporting the bar or tube on or between two or more
revolving grinding or polishing surfaces while it is being rotated and traversed
through the machine.
By varying the nature or quality of the grinding and polishing instruments both
the operations of grinding and polishing can be performed simultaneously.
Having thus stated the nature of our Invention, and described a convenient
mode of performing the same, we wish it to be understood that we do not intend
to limit ourselves to the details given, as the same may be considerably varied or
modified. The axles of the grinding and polishing instruments may be supported
in slides, the position of which is regulated by screws or other equivalents. We
claim, the use of a combination of two or more grindstones or other grinding or
polishing instruments which act on different parts of the circumference of the bar
or tube, thereby producing a more rapid effect and causing the pressure of one
instrument to be counteracted by the other or others, substantially in the manner
described.
In witness whereof, J, the said Ambrose Edmund Heath Buckley Butler, for
myself and on behalf of the said John Octavius Butler, have hereunto set
my hand and seal, this Seventh day of February, One thousand eight
hundred and seventy-seven.
AMB³. EDMP. H. B. BUTLER. (L.S.)
AMBE. EDMP. H. B. BUTLER. (L.S.)