IMPROVEMENTS IN THE MANUFACTURE OF CASTORS FOR FURNITURE."
Year: 1878

page_text: LETTERS PATENT to Arthur Martyn, of 28ª, Cank Street, Leicester, in the
County of Leicestershire, for the Invention of "IMPROVEMENTS IN THE
MANUFACTURE OF CASTORS FOR FURNITURE."
PROVISIONAL SPECIFICATION left by the said Arthur Martyn at the Office
of the Commissioners of Patents on the 30th January 1878.
ARTHUR MARTYN, of 28, Cank Street, Leicester, in the County of Leicester-
shire. IMPROVEMENTS IN THE MANUFACTURE OF CASTORS FOR FURNITURE."
"
I make the various parts of castors by pouring into cast-iron or other suitable
metallic moulds any metal or alloy possessed of the requisite strength and hardness,
but being at the same time sufficiently fusible to be melted in an iron melting pan.
I use the following alloys:-Copper, tin, zinc, and lead; copper, tin, and zinc ;
copper and tin; copper and zinc; copper and lead; tin, zinc, and lead; tin and zinc,
or zinc and lead ; but others may be employed.
When making some descriptions of castors I tin or otherwise coat with an
adhesive metal the central iron pin or screw to be inserted in the furniture leg, and
I cast the flange or disc around this by pouring the metal into a cast-iron or other
suitable metallic mould, and in other descriptions having sockets I adopt a similar
method of securing the central peg or pin.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said Arthur Martyn in the Great Seal Patent Office on the 25th July
1878.
ARTHUR MARTYN, of 28ª, Cank Street, Leicester, in the County of Leicester-
shire. "IMPROVEMENTS IN THE MANUFACTURE OF CASTORS FOR FURNITURE."
I make the various parts of castors by pouring into cast-iron or other suitable
metallic moulds any metal or alloy possessed of the requisite strength and hardness,
but being at the same time sufficiently fusible to be melted in an iron melting
pan.
I use the following alloys:-Copper, tin, zinc, and lead; copper, tin, and zinc;
copper and tin; copper and zinc; copper and lead; tin, zinc, and lead; tin and zinc,
or zinc and lead; but others may be employed.
When making some descriptions of castors I tin or otherwise coat with an
adhesive metal, the central iron pin or screw to be inserted in the furniture leg, and
I cast the flange or disc around this by pouring the metal into a cast iron, or other
suitable metallic mould, and in other descriptions having sockets I adopt a similar
method of securing the central peg or pin.
I also fix the several pins and secure the required adhesion by corrugating,
roughening, or piercing the portion of them which is to be attached or embedded.
Of the above alloys I prefer copper, tin, and zinc, and in all cases where I employ
copper I use it in such small proportions that the resulting alloy is readily fusible
in an ordinary iron melting pot or pan.
I do not confine myself to the use of any particular metal or alloy, as the feature
of novelty of this Invention consists in the manufacture of the several parts of
furniture castors by casting or pouring into moulds, made of metal fusible only at a
high temperature, a metal or alloy fusible at a low one; and what I claim and intend
to be secured by these Letters Patent is the manufacture of the various parts of
furniture castors known as the socket, the screw plate, the horns, and the bowl, by
pouring into iron or other metal moulds a metal or alloy to form these which is
sufficiently fusible to be melted in an ordinary iron melting pot or pan.
In witness whereof, I, the said Arthur Martyn, have hereunto set my hand
and seal, this Twenty-second day of July, in the year of our Lord 1878.
ADMITID