Improvements in or relating to the Toughening or Strengthening of Metal, particularly applicable to Steel Tubes and Brazed Joints.
Year: 1896

page_text: Date of Application 24th Sept. 1896
Complete Specification Left. 24th June. 1897-Accepted. 31st July, 1897
Complete Specification Left. 24th June. 1897-Accepted. 31st July, 1897
PROVISIONAL SPECIFICATION.
Improvements in or relating to the Toughening or Strengthening of
Metal, particularly applicable to Steel Tubes and Brazed Joints.
I, ROBERT SAMUEL LOVELACE, of Henstrige, in the County of Somerset, Cycle
Manufacturer, do hereby declare the nature of this invention to be as follows:-
This invention relates to the toughening or strengthening of metal in various
forms particularly steel tubes such as are employed in the manufacture of cycles
and other similar structures; the invention is also applicable and useful for brazed
and similar joints.
The clief effect which I obtain in the toughening or strengthening of the metal
is by the application of india-rubber, which I find has the effect of greatly tough-
ening or strengthening the metal. The rubber may be applied in various ways,
for example, simply by rubbing it on, but I prefer to apply it in the form of a
solution or liquid, into which the metal after it has been heated can be dipped or
which can be poured over the heated metal, thus cooling and in effect, tempering
it.
The liquid may be formed of oil or fat-linseed oil is a good material for the
purpose borax and soda being added in suitable proportions, with which is mixed
the rubber, which, for convenience, may be added in a state of solution. These
ingredients may be stirred up together but they mix best under the influence of
the hot metal, which is dipped into them.
The piece of metal, or the portion of metal, or the brazed or other joint to be
treated is dipped when suitably heated, preferably to a good blood red into the
solution above described, and is left in it or moved about in it until fairly cool,
when it may be withdrawn and dried.
The treatment may be applied to any portion of the metal, but for cycle frames
I find that it is often advantageous to treat only the joints and a short portion of
each tube contiguous to the joint, in order to make the joint substantially stronger
than the rest of the tube, so that in case of accident or damage the joint is less likely
to give way. I thus fairly equalise the strength of the frame throughout.
Dated this 24th day of September 1896.
BOULT & WADE.
Agents for the Applicant.
Improvements in or relating to the Toughening or Strengthening of
Metal, particularly applicable to Steel Tubes and Brazed Joints.
I, ROBERT SAMUEL LOVELACE, of Henstridge, in the County of Somerset, Cycle
Manufacturer, do hereby declare the nature of this invention and in what manner

page_text: the same is to be performed to be particularly described and ascertained in and by
the following statement:--
This invention relates to the toughening or strengthening of metal in various
forms particularly steel tubes such as are employed in the manufacture of cycles
and other similar structures; the invention is also applicable and useful for brazed
and similar joints.
The chief effect which I obtain in the toughening or strengthening of the metal
is by the application of india-rubber, which I.find has the effect of greatly tough-
ening or strengthening the metal. The rubber may be applied in various ways,
for example, simply by rubbing it on, but I prefer to apply it in the form of a
solution or liquid, into which the metal after it has been heated can be dipped or
which can be poured over the heated nietal, thus cooling and in effect, tempering
it.
The liquid may be formed of oil or fat-linseed oil is a good material for the
purpose borax and soda being added in suitable proportions, with which is mixed
the rubber, which, for convenience, may be added in a state of solution. These
ingredients may be stirred up together but they mix best under the influence of
the hot metal, which is dipped into them.
The piece of metal, or the portion of metal, or the brazed or other joint to be
treated is dipped when suitably heated, preferably to a good blood red into the
solution above described, and is left in it or moved about in it until fairly cool,
when it may be withdrawn and dried.
The treatment may be applied to any portion of the metal, but for cycle frames
I find that it is often advantageous to treat only the joints and a short portion of
each tube contiguous to the joint, in order to make the joint substantially stronger
than the rest of the tube, so that in case of accident or damage the joint is less likely
to give way. I thus fairly equalise the strength of the frame throughout.
One example of a tempering and toughening solution according to this inven-
tion is a mixture with one gallon of oil of a quarter of a pound of india-rubber
solution a quarter of a pound of soda and a quarter of a pound of borax but this
invention is not limited to the use of these ingredients in the above proportions
which are referred to by way of illustration.
Having now particularly described and ascertained the nature of this inven-
tion and in what manner the same is to be performed I declare that what I
claim is:-
1. The treatment of metal articles with india-rubber or with a solution contain-
ing the same for the purpose described.
2. A tempering and toughening solution comprising linseed or other oil fat or
grease mixed with india rubber, soda and borax in, or about in, the proportions
hereinbefore specified.
Dated this 24th day of June 1807
BOULT & WADE.
Agents for the Applicant.