Year: 1888

page_text: Date of Application, 5th Dec., 18±8
Complete Specification Left, 29th Mar., 1889
Complete Specification Accepted, 16th May, 1889
We PATRICK MURPHY and TIMOTHY MURPHY both of Number 73 and 74 Main street
Clonmel in the County of Tipperary Ireland Agricultural Engineers do hereby declare
the nature of this invention to be as follows:-
The said improvements consists of a continuous and partly direct stay or hinge bar
which is Jointed to the back part of frame and passes across the extension plate to
which it is fastened and thence to the main shoe to which it is hinged or Jointed.
Drawing figure (1) is a vertical section of said stay and extension plate with parts con
nected therewith. "A" is the said stay and is fastened to the extension plate "M"
and it is hinged or Jointed to the main frame at "P" and it is also hinged or Jointed
to main shoe at "B," the main shoe is also hinged or Jointed to the extension plate
at "O" and to the main frame at "D." Second part consists of a device by which the
hinge or Joints of extension plate is kept tight and free from vibration showing on
Drawing Fig. (2) and is effected by means of a tapered plug or pin. Drawing Fig. (2)
is an end view of said device. "R" is the tapered pin or plug. "S" is a block placed
"O" is
between said tapered pin and outside part of hinge of said extension plate.
the frame to which said hinge "D" of extension plate is connected, said pin "R" is
pressed between the block "S" and the frame "C" by means of a bolt acted upon
by the nut "F" and when so forced will cause the block "S" to press the hinge and
Joint pin together thereby preventing vibration. The third part consists of two
interchangeable steel sliding plates which are inserted in the main shoe and attached
thereto with bolts or rivets one under heel of Knife and the other over the head of
Knife thereby causing the knife to run much lighter and freer.
This latter improvement is not indicated by a drawing.

page_text: We PATRICK MURPHY and TIMOTHY MURPHY both of Number 73 and 74 Main Street
Clonmel in the County of Tipperary Ireland Agricultural Engineers 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 :-
The said improvements consists firstly of a direct acting combined main stay and
main shoe stay or hinge bar which is Jointed to the back end of the frame of the
Machine and then passes on diagonally to and over (or under) the main shoe extension
plate to which it is rigidly bolted and then extends over or under the connecting rod and
on to the front of the main shoe to which it is substantially attached at a point outside
the line of the knives and fingers, as per drawings left with Provisional Specification
which we now adopt. Drawing Fig. 1. is a vertical section of said stay and exten-
sion plate with parts connected therewith. "A." is the said stay and is fastened to
the extension plate "M," and it is also hinged or Jointed to the main shoe at "B."
The main shoe is also hinged or Jointed to the extension plate at "O," and the
extension plate to the main frame at "D." The second of said improvements consists of
a device by which the hinges or Joints of said extension plate are kept tight and free
from vibration as shewing on drawing fig. (2) and is effected by means of a tapered
pin or plug. Drawing Fig. (2) is an end view of said device. R." is the tapered
pin or plug. "S." is the block placed between said tapered pin and outside circular
part or end of said extension plate. "C." is the frame to which said hinge "D" of
extension plate is connected. Said pin "R" is pressed between the block "S" and the
frame "C" by means of a bolt acted upon by the nuts "F" and when so forced will
cause the block "S." to press the said hinges and Joint pin together thereby pre-
venting vibration. The said hinge "D" Fig. (2) or the block "S" and made to
may be also tightened by means of
a set screw fitted into the frame or fulcrum "
screw against said block "S" thereby tightening it against the hinges "D." or the
said hinge "D" may be tightened by means of an eccentric or feather projection
formed on an axle and fitted into the frame "C" and against the said block "S"
and as said eccentric or feather projection would be turned slightly around by
means of a lever said block "S" would be forced against said hinge "D." The
said device as shewn on fig. (2) is also applicable to the hinges formed on other
side of said extension plate which connects the main shoe shewn at "O" and "B"
drawing fig. (1). The third of said improvements consists of two interchangeable
steel lining plates which are inserted in the main shoo and attached thereto with
bolts or rivets one under heel of knife and the other over head of knife thereby
preventing the wearing of the main shoe and causing the knife to run much lighter
and freer. This latter improvement is not indicated by a drawing.
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 and that the Features of Novelty are:-
(1) That the said stay is continuous and by its adoption the back end of the machine,
the extension plate, the main shoe and finger bar are directly and substantially con-
nected by the said stay and securely and rigidly held in an effective position thereby

page_text: preventing breakage and wearing and straining of the hinge bar pins and main shoe
and also the vertical oscillation of the main shoe and finger bar to which they are
subject when passing over an irregular surface.
(2) That the said stay dispenses with the front bracket and strain bar which are
attached to the extension plate and indispensible in all Mowing Machines manufactured
up to this having the double Jointed finger bar.
(3) That the backward strain on the outer end of the finger bar is avoided by its
adoption.
(4) By the adoption of the said device (drawing fig. 2) the hinges or Joints of
extension plate are prevented from becoming shakey, or shaking through wear or other
cause.
(5) This is effected by forcing the said tapered plug "R" between the fulcrum "C."
and the press block "S" which said press block rests against the circular end of said
extension plate "D." drawing fig. 2.
(6) That the said forcing of said plug is effected in a few seconds by means of a
bolt and nuts shewn at "F" drawing Fig. (2).
(7) That the tightening of said hinges can be effected from time to time as may be
required by the several ways herein defined.
(8) By the insertion of the said steel lining plates the action of the knife is lighter
and freer.
(9) That they preserve the main shoe from getting worn and prevents wear and
breakage by reason of the knife sliding on the said steel lining plates instead of on the
metal in that part of the main shoe in which the head of the knife works.
(10) That the said steel lining plates are interchangeable and can be replaced when
worn at a nominal cost.
Dand this 07th dose of Mauch 1000
PATRICK MURPHY.
TIMOTHY MURPHY.