IMPROVEMENTS IN HARROWS
Year: 1881

page_text: LETTERS PATENT to Alexander Melville Clark, of 53, Chancery Lane, in the
County of Middlesex, Patent Agent, for an Invention of "IMPROVEMENTS
IN HARROWS." A commiunication from abroad by Thomas Haxton and
George Beattio, both of Gore, Otago, New Zealand.
COMPLETE SPECIFICATION filed by the said Alexander Melville Clark at
the Office of the Commissioners of Patents on the 3rd October 1881.
ALEXANDER MELVILLE CLARK, of 53, Chancery Lane, in the County of
Middlesex, Patent Agent. "IMPROVEMENTS IN HARROWS." A communication
from abroad by Thomas Haxton and George Beattie, both of Gore, Otago, New
Zealand.
The object of this Invention is to facilitate the thorough cultivation of uneven
ground, and promote convenience in enlarging and contracting the harrow, as the
work to be done may require.
The Invention consists in a harrow constructed of sections of metal, each section
made in one piece, bent horizontally in triangular form with eyes at the ends of
the arms, and also bent vertically below the eyes to form teeth, whereby when the
sections are linked together a complete flexible harrow is made, as will be herein-
after fully described.
In the accompanying Drawings, Figure 1 is a plan view of the improvement;
Figure 2 is a side elevation of the same; Figure 3 is a perspective view of one of
the harrow sections; Figure 4 is a perspective view of another form of section.
Similar letters of reference indicate corresponding parts.
In constructing this improved harrow round or square rods or bars of metal of
suitable size are cut into pieces A of proper length. One end of each piece A is
bent to form an eye B. At a distance from the other end of the rod A, equal to
the required length of a tooth C, the said piece or rod is bent upward, forward,
and downward, so as to form an eye D to receive an eye of an adjacent rod A, and
to cause the tooth C to project at right angles with the body of the rod A. The
part of the rod A. between the eyes B, D, is then bent into the form of an isosceles
triangle as shown.

page_text: The rods bent in the manner herein shown and described are then linked together
by passing the eye B of one rod or section into the eye D of the adjacent rod or
section A to form a row of the desired length. In forming a second row the eye D
of each rod or section A is passed through the angle of a rod A of the preceding
row before being passed through the eye B of the adjacent section. Some of the
rods or sections A must have the eye D and tooth Cupon the right hand end or
arm of the said rod or section, and some must have the said eye D and tooth C
upon the left hand end or arm.
One rod or section of each row must have an eye D and tooth C upon both ends,
so that when a row of sections is put together it may have a tooth C at each end
of each section in the said row.
The front row of sections A, consisting of two or three sections, can be formed
wholly of sections having an eye D and tooth C at each end, and each eye D is
hooked into an angle of a section of the preceding row, so that there will be only
half as many sections in the front row as in the next succeeding row. The angle
of each section in the front row is provided with a hook E to be hooked into a
clevis or staple attached to the draw bar, which draw bar is not shown in the
Drawings.
With this construction by swinging a side section A into the position shown in
dotted lines in Figure 1, its eye B can be slipped off the eye D and tooth C of the
adjacent side section, and can then be slipped off the eye D and tooth C of the
adjacent front section, and by reversing this operation sections can be easily added
to the side of the harrow, so that the harrow can be readily widened and narrowed
ns the work to be done may require. With this construction the barrow will be
very flexible, so that it will adapt itself to any unevenness in the surface of the