Improvements in Tines for "Bush" Harrows.
Year: 1889

page_text: Date of Application, 30th July, 1889
Complete Specification Left, 19th Oct., 1889-Accepted, 23rd Nov., 1889
PROVISIONAL SPECIFICATION.
Improvements in Tines for "Bush" Harrows.
We, CHARLES FREDERICK MILLAR, of Kingsweston Estate Office, Shirehampton, in
the county of Gloucester, estate agent, and MARK AMOS, of the College, Westbury-on-
Trym, in the county of Gloucester, engineer, do hereby declare the nature of this
invention to be as follows:-
This invention, which relates to harrows of the type known as
consists in improvements in tines therefor.
"bush" harrows,
The improved tines consist of flat bars having a twist imparted thereto at or about
midway between the ends.
Before being twisted the tines are, while red-hot, inserted in horizontal slots in the
section bars of the harrow.
They are then twisted and thereby brought edgewise across the section bar, one
half of the twisted part being above the section bar and the other half below.
The tines are thus loosely but effectually held in the section bars.
They are free to rock therein within limits, an action which is desirable in such
harrows.
The tines are pointed by cutting them diagonally at each end so that one edge is
longer than the other, an acute angle being formed at each of the extremities of one
edge and an obtuse angle at each extremity of the opposite edge.
Consequently, a different effect is obtained according to which end of the harrow is
leading.
Dated this 20th day of July 1889
NICHOLAS WATTS,
Applicants' Agent.
COMPLETE SPECIFICATION.
Improvements in Tines for "Bush" Harrows.
We, CHARLES FREDERICK, MILLAR, of Kingsweston Estate Office, Shirehampton,
in the county of Gloucester, estate agent, and MARK AMOS, of the College, Westbury-
on-Trym, in the county of Gloucester, engineer, do hereby declare the nature of this
invention and in what manner the same is to be perforined, to be particularly
described and ascertained in and by the following statement:-
This invention, which relates to harrows of the type known as
consists in improvements in tines therefor.
"bush" harrows,
The improved tines consist of flat bars having a twist imparted thereto to or about
midway between the ends,
Before being twisted the tines are, while red-hot, inserted in horizontal slots in
the section bars of the harrow.
They are then twisted and thereby brought edgewise across the section bar,
approximately one half of the twisted part being above the section bar and the other
half below.
The tines are thus loosely but effectually held in the section bars.
They are free to rock therein within limits, an action which is desirable in such
harrows.
The tines are pointed by cutting them diagonally at each end so that one edge is
longer than the other, an acute angle being formed at each of the extremities of one
edge and an obtuse angle at each extremity of the opposite edge.
Consequently, a different effect is obtained according to which end of the harrow is
leading.

page_text: Fig. 1 on the accompanying sheet of drawings represents a front view of a section
bar of a bush harrow fitted with our improved tines. Fig. 2 is a section on the
line a, a, Fig. 1, and shews a tine in end elevation..
The improved tine consists of a short flat bar a which is inserted while red hot in
a slot in the section bar b.
The tine is then twisted through a right angle and thus for the most part brought
edgewise on the section bar b as shown. The slot in which the tine is inserted is
somewhat longer than the bar constituting the tine is broad. Hence the latter is
free to rock in the aperture and thus exerts a more complete effect on the soil being
harrowed. By their vibration the tines have a tendency to remain cleaner and are
consequently less liable to become clogged.
The tines are pointed at each end in such manner that one edge is longer than the
other, an acute angle being formed at each extremity of one edge, and an obtuse
angle at each extremity of the opposite edge. A varied effect is hence obtained
according to that end of the harrow which leads. When the acute angled points are
in front, a scratching or raking effect is obtained in a greater degree than when the
obtuse angles of the tines are leading.
The section bars are linked together and connected to the beams at each end of the
implement in the usual manner.
Having now particularly described and ascertained the nature of our said inven-
tion, and in what manner the same is to be performed, we declare that what we
claim is :-
1. An improved tine, for bush harrows, consisting of a flat bar such as a to which,
after insertion in the slot of the section bar, a twist is imparted so as to bring the
ends of the tine cross wise to the section har both above and below the same, sub-
stantially as herein before described and shown in the accompanying drawing.
2. An improved tine, for bush barrows, such as is claimed in the preceding claim,
having the ends cut diagonally so that one edge is longer than the other, an acute
angle being formed at each extremity of one edge, and an obtuse angle at each
extremity of the opposite edge, substantially as hereinbefore described and shown in
the accompanying drawing.
Dated this 18th day of October 1889.
NICHOLAS WATTS,
Applicants' Agent.