Improvements in or connected with Lawn Mowers.
Year: 1891

page_text: Date of Application, 6th Nov., 1891
Complete Specification Left, 16th Mar., 1892-Accepted, 23rd Apr., 1892
PROVISIONAL SPECIFICATION.
Improvements in or connected with Lawn Mowers.
I WILLIAM DYSON WANSBROUGH of St. Catherines, Lincoln, in the County
of Lincoln, Engineer, do hereby declare the nature of this invention to be as
follows:-
This invention has for object certain detail improvements in or connected with
lawn mowers, to
1. Effect a better balancing of the machines to reduce labour of the attendant.
2. Tilt the front end or the back end to suit the desired height of cut.
3. Adjusting and setting the angle of the cutters to suit varying growths of
grass.
4. Make the rigid blade with teeth somewhat like the teeth of a cross cut saw,
but with an angled or chamfered edge from point to bottom on one face.
5. Employ dividing fingers in conjunction with rotatory cutters.
For the purpose of my invention I arrange the body of a lawn mower on a main
wheel or roller and a lead wheel or roller or upon a main wheel or roller and a
trailing wheel or roller.
The lead wheel or the trailing wheel is capable of being raised and lowered on
the main wheel from the handles or from a separate handle conveniently placed so
that the cutters can be set at the required angle, and also as to height, an appliance
fixing the handle or its connection in an easy manner.
The fixed blade I purpose making with saw like teeth with chamfered face
edges as a cutting medium in conjunction with the ordinary spiral shaped rotating
cutters.
The separation of the grass blades prevents the knives becoming clogged and
renders the cutting easy.
H.
GARDNER,
Patent Agent, 166, Fleet Street, London, E.C.,
Agent for the said W. D. Wansbrough.
COMPLETE SPECIFICATION.
Improvements in or connected with Lawn Mowers.
I WILLIAM DYSON WANSBROUGH of St. Catherines, Lincoln, in the County
of Lincoln, Engineer, 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 invention has for object, certain detail improvements in or connected with
lawn mowers, to
1. Effect a better balancing of the machines to reduce labour of the attendant.
2. Tilt the front end or the back end to suit the desired height of cut.
3. Adjusting and setting the angle of the cutters to suit varying growths of
grass.
4. Make the rigid blade with teeth, somewhat like the teeth of a saw, but with
an angled or chamfered edge.
For the purpose of my invention I arrange the body of a lawn mower on a main
wheel or roller and a lead wheel or roller, or upon a main wheel or roller and a
trailing wheel or roller.
The lead wheel or the trailing wheel is capable of being raised and lowered on
D... oil

page_text: the main wheel from the handles, or from a separate handle conveniently placed so
that the cutters can be set at the required angle and also as to height, an appliance
fixing the handle or its connection in an easy manner.
The fixed blade I purpose making with saw like teeth with chamfered face
edges as a cutting medium in conjunction with the ordinary rotating cutters.
The separation of the grass blades prevents the knives becoming clogged and
renders the cutting easy.
My invention will be understood by the annexed drawings.
Figure 1, plan of machine with handle bars broken.
Figure 2, side elevation of machine.
Figure 3, under view of toothed blade and cutter reel.
Figure 4, section of same through a, b, Figure 3.
A, main wheel. B, B, main frame. C, cutting reel. D, fixed blade with saw
like teeth. E, E, balancing frame loosely bolted at F, F. G, G, rollers on front
of balancing frame E. H, scraper to keep rollers G, G, clean. The axle J of the
rollers G, G, forms a tie or cross bar in conjunction with cross bar K to which the
socket ring L of rod M is attached, the other end of said rod M having a slot for
enabling the rod to be fixed higher up or lower down and secured by the pinch
wheel N, this being on a threaded portion of the main frame tie bar P. This
raising or lowering determines the height of cut by causing the cutter reel and the
fixed blade to be set by the attendant from the handle end of the machine. Q, is
the grass collecting box.
I have shown my improvements applied to a chain driven lawn mower but any
kind of gear can be used, and instead of fitting the adjusting rollers G, G, at the
front they may be arranged at the rear of the main wheel A as indicated by dotted
lines at Figure 2.
Having now particularly described and ascertained the nature of this inven-
tion and in what manner the same is to be performed I declare that what I
claim is
As detail improvements in lawn mowing machines.
1. The balance frame E, E, for the purpose set forth.
2. Making the fixed blade D with saw-like teeth as and for the purpose
described..
3. Adjusting the balancing frame from the handle of end of lawn mower
substantially as set forth.
D
M
1 1000
H. GARDNER,
Patent Agent, 166, Fleet Street, London,
Agent for the said W. D. Wansbrough.