AN IMPROVED METHOD OF MAKING SPIRAL SPRINGS OF STEEL OR OTHER METAL FOR PISTONS AND AIR PUMP BUCKETS
Year: 1880

page_text: LETTERS PATENT to Reuben Lowe Barker, of Newton Moor, in the County of
€
Chester, Engineer, for an Invention of AN IMPROVED METHOD OF MAKING
SPIRAL SPRINGS OF STEEL OR OTHER METAL FOR PISTONS AND AIR PUMP
BUCKETS."
PROVISIONAL SPECIFICATION left by the said Reuben Lowe Barker at
the Office of the Commissioners of Patents on the Sth May 1880.
REUBEN LOWE BARKER, of Newton Moor, in the County of Chester, Engineer.
"AN IMPROVED METHOD OF MAKING SPIRAL SPRINGS OF STEEL OR OTHER
METAL FOR PISTONS AND AIR PUMP BUCKETS."
My Invention is applicable to spiral springs that are used inside piston rings and
air pump bucket rings, and also to springs that are used without outer rings, and
consists in making these spiral springs from bars of steel or other metal of an
equal thickness throughout and of an oblong, square, or other section. I form these
springs by rolling the bars into any number of circles required, and bending them
to a shape somewhat similar to split key rings, so as to form a spring of equal
depth, or nearly so, throughout. When the spring has been rolled with the requisite
number of circles and is placed in a horizontal position, the ends lie nearly one above
the other, almost in a vertical line, and the portion of the inner circle or circles
between the ends is heated, and sufficient pressure is applied to bend the heated
portion by the ends being forced towards each other, so as to form a ring of almost
an equal depth all the way round, the spring being bent to the depth of the
section of the metal, so that each end is parallel with the outer circle of which it
forms a part. When the spring has been thus made, a portion of each end is cut
off to allow the spring to be contracted so that it may be put in its place; or I use
dies for bending the heated portion of the springs formed so as to do away with
the necessity for cutting off any portions of the ends. In some cases I form the
bended portion or portions in a streight bar, and at such a distance apart that
when it is rolled into a spiral spring the bended portions will fit together, and the
ends will be the requisite distance apart to allow the spring to be compressed. I
also make springs as above described and use them without outer rings to form the
packing.

page_text: "
SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said Reuben Lowe Barker in the Great Seal Patent Office on the 8th
November 1880.
REUBEN LOWE BARKER, of Newton Moor, in the County of Chester, Engineer.
AN IMPROVED METHOD OF MAKING SPIRAL SPRINGS OF STEEL OR OTHER METAL
FOR PISTONS AND AIR PUMP BUCKETS."
I form
My Invention is applicable to spiral springs that are used inside piston rings and
air pump bucket rings, and also to springs that are used without outer rings, and
consists in making these spiral springs from bars of steel or other metal of an
equal thickness throughout, and of an oblong, square, or other section.
these springs by rolling the bars into any number of circles required, and bending
them to a shape somewhat similar to split key rings, so as to forin a spring of equal
depth, or nearly so, throughout. When the spring has been rolled with the
requisite number of circles and is placed in a horizontal position, the ends lie nearly one
above the other, almost in a vertical line, and the portion of the inner circle or
circles between the ends is heated, and sufficient vertical pressure is applied to bend
the heated portion by the ends being forced towards each other, so as to form a
ring of almost an equal depth all the way round, the spring being bent to the depth of
the section of the metal, so that each end is parallel with the outer circle of which
it forms a part.
When the spring has been thus made, a portion of each end is cut off to allow the
spring to be contracted so that it may be put in its place; or I use dies for bending
the heated portion of the springs formed so as to do away with the necessity for
cutting of any portion of the ends. In some cases I form the bended portion or
portions in a straight bar, and at such a distance apart that when it is rolled into a
spiral spring tbe bended portions will fit together, and the ends will be the requisite
distance apart to allow the spring to be compressed. I also make springs as above
described and use them without outer rings to form the packing, in which case the
springs are compressed and turned in a lathe to the required diameter.
On the accompanying Sheet of Drawings Fig. 1 shews a spring constructed
according to my Invention uncompressed, and Fig. 2 shews the same compressed,
as it would be in the piston without outer rings, and Fig. 3 shews a piston head
in section, in which my improved spiral spring is used inside outer rings; the
spiral spring is marked a, and the outer rings are marked b.
Having thus stated the nature of my Invention and described how the same may
be performed, I declare that I claim,―
The springs for pistons and air pump buckets, formed substantially as shewn and
described.
In witness whereof, I, the said Reuben Lowe Barker, have hereunto set my
hand and seal, this Fifth day of November, One thousand eight hundred
REUBEN LOWE BARKER. (L.S.)