Improvements in Haymaking Machines.
Year: 1891

page_text: Date of Application, 11th Aug., 1891
Complete Specification Left. 28th Apr., 1892-Accepted, 28th May, 1892
PROVISIONAL SPECIFICATION.
Improvements in Haymaking Machines.
I, JOHN EDWARD SHARMAN PERKINS of the Queen Street Iron Works
Peterborough in the County of Northampton, Engineer do hereby declare the
nature of this invention to be as follows:-
This invention relates to that class of haymaking or tedding machines in which
the forks are attached to arms, actuated by a crank shaft. The upper end of each
of these arms, is jointed to a vibrating link, the other end of which is jointed to the
frame of the machine. In order to alter the motion of the forks, and adapt them
to various conditions of the hay to be shaken, the fork arm is so constructed that
the connection to the vibrating link may be fixed at different positions on the fork
arm. As the distance between the crank and the connection to the vibrating link
is increased, the resulting motion of the fork end is lessened.
By another arrangement, the upper ends of the fork arms, carry rollers, which
are adjustable, and which move in adjustable guides, or the bearings on the fork
arms, in which the cranks work may be made adjustable.
Dated this 10th day of August 1891.
J. EDWARD S. PERKINS.
COMPLETE SPECIFICATION.
Improvements in Haymaking Machines.
I, JOHN EDWARD SHARMAN PERKINS of the Queen Street Iron Works
Peterborough in the County of Northampton 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 relates to that class of haymaking or tedding machines in which
the forks are attached to arms, actuated by a crank shaft, the upper end of each of
these arms is jointed to a vibrating link, the other end of which is jointed to the
frame of the machine. In order to alter the motion of the forks, and adapt them
to various conditions of the hay to be shaken, the fork arm is so constructed that
the connection to the vibrating link may be fixed at different positions on the fork
arm. As the distance between the crank and the connection to the vibrating link
is increased the resulting motion of the fork end is lessened. By another arrange-
ment the upper ends of the fork arms carry rollers which are adjustable and which
move in adjustable guides or the bearings on the fork arms in which the cranks
work may be made adjustable.
DESCRIPTION OF DRAWINGS.
Fig. 1 is an elevation of part of a haymaking machine constructed as above
described. A is the crank shaft with the 3 cranks B. B' B² each of which carries
3. fork arm, one of these is shown at C. At the top of the fork arm are
3 holes D. D' D' for jointing the fork arm C to the vibrating link E the other end
of which is connected to the frame of the machine. The motion of the fork arm is
varied by jointing the end of the link C to the different points D D' D².
Fig. 2 shows a similar arrangement but with 2 holes FF in the vibrating link E
as well, as in the fork arm.
Fig. 3 shows another arrangement in which the end of the fork arm C carries a
[Price 8.]

page_text: roller H which works in a guide J. This guide can be adjusted to various angles
in order to alter the motion of the fork.
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 :-
:-
The method of regulating the motion of the fork arms of haymaking machines
substantially as described and shown in Figs. 1 and 2.
The method of regulating the motion of the fork arms as described and shown in
Fig. 3.
ג'..מ
J. EDWARD S. PERKINS.