An Improvement in Machines for Mowing Grass..
Year: 1890

page_text: Date of Application, 28th Jan., 1890
Complete Specification Left, 26.h Nov., 1890-Accepted, 27th Dec.. 1890
PROVISIONAL SPECIFICATION.
An Improvement in Machines for Mowing Grass..
I THOMAS JENKS of 3 Alexander Buildings Grosvenor Bath in the County of
Somerset Cotton Agent do hereby declare the nature of this invention to be as
follows:
This machine is constructed on the principle shown by accompanying drawing.
A A are two iron wheels each formed of two parts separately shown as A. 1 and A. 2.
The part AI is the outer shell having inside the rim at equal distances four (or
more) solid blocks or buttresses to which can be attached the inside ring or part A. 2.
This ring which must exactly fit the inside of the part A. 1 is not flat but is deflected
from its plane at equal distances in a curvilinear manner. It is wider than the
blocks or buttresses so that when attached to them the inner edge projects beyond
them towards the centre of the wheel.
BB are two cutters of the nature used in horse clipping and other machines but
differing as hereinafter described. At one end of each cutter is a projection having
underneath two blocks or bosses either round in shape or of the form shown by
dotted lines on the projecting end of the separate Figure B which represents the
bottom cutter. The inner surfaces of the cutters, that is to say the under surface of
the top cutter and the upper surface of the bottom cutter are hollowed out
sufficiently to form a slight depression from the level surface in the part enclosed
by the dotted line shown in the body of separate Figure B. These cutters may be
of any length and contain as many teeth as may be required by the width of the
machine. The cutters are attached one over the other to the bed of the machine
by screws passing through the slots shown in the drawing of the cutter B..the square
ends of the cutters working through apertures in the sides of the machine and the
projecting ends (carrying the bosses) extending into the interiors of the wheels.
When the wheels A A are placed on the ends of the shaft C the inner edge of the
part A 2 runs between the bosses on the under sides of the cutters so that the curves
of the said part A 2 in revolution cause a rapid reciprocal horizontal movement of
the cutters, each moving backwards and forwards as many times as correspond to
the number of deflections in part A 2.
Attached to the shaft C at equal distances apart from each other are metal
plates D D (of sufficient thickness and as many in number as are required by the
size of machine) running the whole length of the shaft within the sides of the
machine which plates revolving with the shaft form a fan which catching the grass
after it has passed through the cutters sweeps it backward or into the collecting
pan when such is used.
LT1000
THOMAS JENKS.
COMPLETE SPECIFICATION.
An Improvement in Machines for Mowing Grass.
I THOMAS JENKS of 3 Alexander Buildings Grosvenor Bath in the County of
Somerset Cotton Agent 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 :-
This machine is constructed on the principle shown by accompanying drawings of
working parts. A A in Fig. IV. are two wheels each formed of two parts separately
shown as A 1 and A 2. The part A 1 is the outer shell having inside at certain
distances four (or more if required) solid blocks or buttresses to which can be

page_text: attached the inside ring or part A 2. This ring is not flat but is deflected from it.
plane at equal distances in a curvilinear manner and according to convenience of
manufacture may be made of one piece or in parts placed end to end. It is wider
than the blocks or buttresses so that when attached the edge intended to be used
projects sufficiently to leave it free to run in slots on one or both ends of the cutter
upon which it is intended to act.
The cutter B is similar in form to cutters used in ordinary mowing machines but
having at the end or ends either above or below as required a slot in which the edge
of the ring A 2 can run. The cutter may be of any length & contain as many teeth
as may be required by the width of the machine. The ends of the cutter work
through apertures in the sides of the machine and so project that when the
wheels A. A are placed in position the edge of the part A 2 can work in the slot
and being revolved the curves of its formation cause a rapid horizontal movement
of the cutter backwards and forwards as many times as correspond to the number of
deflections in part A 2.
Fig. IV represents the parts previously alluded to in position for action. (' is a
bed or under cutter fixed to frame of machine not a working part.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed I declare that what I
claim is
1. The attainment of a rapid horizontal action by means of parts similar to those
described.
2. The application of the same to the purpose of mowing.
THOMAS JENKS,
Applicant.