Year: 1886

page_text: I, HERBERT JOHN ALLISON, of the firm of Allison Brothers, of 52 Chancery Lane,
London, in the County of Middlesex, Patent Agents, do hereby declare the nature
of this invention, which has been communicated to me from abroad by Andrew
Eppler, Junior, Machinist, and Edward Baylies Seaver, Manufacturer, both of
Boston, Massachusetts, United States of America, and in what manner the same
is to be performed, to be particularly described and ascertained in and by the
following statement:―
This invention relates to the fastening of boot and shoe soles by tubular nails
which are made by cutting a wire into sections or headless nails, such nails being
made and driven by an organized nailing machine which is provided with cutters
for severing the wire into nail lengths and a driver for forcing the nails as fast as
they are formed into the boot or shoe sole and turning or clinching their points or
inner ends against a metal horn or last within the boot or shoe, the wire being
tubular and provided preferably with a fibrous core. Heretofore the outer ends of
the nails of this class have not been enlarged or headed before driving and the
driven nails have received no enlargements or heads at their outer ends by the
action of the driver.
My invention consists in making the nails with notches or slots in their outer
ends and thus forming separable points and then upsetting or turning said points
outwardly by the driver thus forming enlargements or heads which greatly increase
the holding power of the nails, as I will now proceed to describe.
Of the accompanying drawings Fig. 1 represents an enlarged side view showing
two of my improved nails placed end to end. Fig. 2 represents an enlarged side
view of one of the nails showing in dotted lines the form of the outer end or head
of the nail after it is driven. Fig. 3 represents a section on line x, x, Fig. 2. The
same letters represent the same parts in all the figures.
In carrying out my invention I cut from a tubular wire of indefinite length the
sections or nails a, a, by means of cutters which make a V shaped cut and thus at
one operation and without waste of metal form the notch or re-entrant angle 5 in
the outer end of the severed nail the wedge shaped point 4 of the succeeding nail.

page_text: I thus form the nails entirely without waste of metal instead of cutting away
parts of the material to form the points. I then present the nail to the driver
which strikes the notched end of the nail and upsets or separates the spurs which
form the sides of the notch as shown in Fig. 2, thus forming an enlargement or
head of considerable size, and enabling the nail to hold the parts united by it
more securely than nails heretofore formed and driven by the same machine.
As before indicated the wire is tubular and it is preferably made by wrapping &
strip of thin sheet metal around a fibrous cord 2 thus forming a metallic tube or
sheath 3 around said cord.
The tubular form of the metal part enables it to turn or be upset freely both at
the notched head and at the wedge shaped point so that the angle of the cut made
in forming said head and point is not necessarily made very acute, the com-
paratively blunt point shown in the drawings being clinched or upset by the
independent turning of the two metallic prongs at the opposite sides of the tube
constituting the metallic portions of the point, said prongs being separated by the
fibrous core and each being to some extent independent of the other. A solid
nail would require a sharper or more gradually tapering point which if formed
by the same cut that forms the notched head would involve a notch of too great
depth.
Having now particularly described and ascertained the nature of my said
Invention, and in what manner the same is to be performed, I declare that what
I claim is
1st A boot and shoe nail made of tubular metal provided with a V shaped notch
at its upper end and a V shaped point at its lower end, substantially as described.
2nd A boot and shoe nail made of tubular metal with a fibrous core and having
a V shaped notch at its upper end and a V shaped point at its lower end,
substantially as described.
1
1000