Improvements in the Formation of the Heads of Dog Nails.
Year: 1888

page_text: PROVISIONAL SPECIFICATION.
Improvements in the Formation of the Heads of Dog Nails.
THOMAS WHITE, Engineer, Thorpe Hesley near Rotherham, Yorkshire, and JAMES
BEAL, Manufacturer, 5 Collegiate Crescent, Sheffield, Yorkshire, do hereby declare the
nature of this invention to be as follows:-
A new form of head for Dog nails to ensure strength of head and facilitate driving.
in with a hammer, or extracting, without injuring the head or bending the nail.
The under part of the head which clips the material into which the dog-nail is
driven is made flat and the sides of the head are of an irregular hexagon shape, the
crown of the head upon which the hammer falls when driving is dead over the
centre of the dog nail, ensuring straight driving, as the lip or dog part of the nail is
never struck by the hammer, which is unavoidable in driving ordinary shaped
dog nails.
Dog nails with heads shaped as described may be made in the ordinary way, and
made either of forged steel, or iron, or cast in Malleable Cast iron, or in crucible cast
steel, or other suitable material.

page_text: Improvements in the Formation of the Heads of Dog-nails.
THOMAS WHITE, Engineer Thorpe Hesley, near Rotherham, Yorkshire, and JAMES
BEAL, 5, Collegiate Crescent Sheffield, Yorkshire, Manufacturer, do hereby declare
the nature of this invention and in what manner the same is to be performed,
to be particularly described and ascertained in and by the following statement :-
A new form of head for Dog-nails to ensure strength of head and facilitate driving
in with a hammer, or extracting without injuring the head or bending the nail.
The under part of the head which clips the material into which the dog-nail is
driven, is made flat and the sides of the head are of an irregular hexagon shape, as
shown at a Fig. 1, which is a plan of the head looking from the point c.
The crown
of the head upon which the hammer falls when driving is shown at b, Fig. 2, and 1
Fig. 3, it is dead over the centre of the dog nail, ensuring straight driving as the lip
or dog part of the nail, f Fig. 2, is never struck by the hammer, which is unavoid-
able in driving ordinary shaped dog-nails; the top of the head b to f Fig. 2, being
inclined downwards from b, so that in ordinary driving the part f cannot be struck.
These nails may be made by preference of the section shown in Fig. 1, and the
end may be made wider than the shank is at e, Fig. 3, or, they may be made of
any other section of suitable material, and the edge c may be either flat as shown,
or may be brought to a sharp point.
We do not confine ourselves to a hexagon shaped head as described, and may make
the heads of any suitable shape, but always with the crown, or highest part of the
head dead over the centre of the nail and with the dog part inclining from the
crown as before described.
On the sheet of drawings appended hereunto.-
Fig. 1, shows a plan of underneath side of head and point of nail.
Fig. 2, is a side elevation.
Fig. 3, is a front elevation.
Dog-nails with heads shaped as described may be made in the ordinary way, and
made either of forged steel, or iron, or cast in Malleable cast iron, or crucible cast
steel, or other suitable material.
Having now particularly described and ascertained the nature of our inven-
tion and in what manner the same is to be performed, we declare that what we
claim is.
Firstly. An improved shaped dog-nail with a head so shaped that the crown of the
head is higher than the end of the dog portion, such crown being dead over the point,
or opposite end of the nail.
Secondly. The shape of the head generally upon any form of dog-nail, substantially
as herein described and illustrated by the drawings.
1711 1
1
1000