IM- PROVEMENTS IN SOWING MACHINES, PARTS OF WHICH IMPROVEMENTS ARE APPLICABLE TO HORSE HOES
Year: 1871

page_text: PROVISIONAL SPECIFICATION left by Joseph Henry Sams at the
Office of the Commissioners of Patents, with his Petition, on the
21st February 1871.
I, JOSEPH HENRY SAMS, of Bon Accord Works, Aberdeen, North
Britain, do hereby declare the nature of the said Invention for "IM-
PROVEMENTS IN SOWING MACHINES, PARTS OF WHICH IMPROVEMENTS ARE APPLICABLE
TO HORSE HOES," to be as follows:-
:―
The object of this Invention is, first, to improve the method of lifting
and depressing the levers of drill sowing machines.
Hitherto the usual plan adopted has been to turn the lifting roller or
bar by means of a kind of windlass handle of two, three, or four spokes.
This plan is awkward, slow, and rather dangerous.
My improvement consists in having a metal band or wheel with
square teeth or square or round recesses fixed to the lifting roller or bar.
On each side of the recesses or teeth of this band or wheel an eye of
metal or any suitable material encircles the band or roller working casily
round on it. These eyes are bolted or otherwise firmly attached to a
lever. Attached to the lever and actuated by means of crank levers and
a spring is a slip bolt the end of which fits into the recesses in the band
or wheel. At one end of the roller is the usual pinion or ratchet and

page_text: catch or paul. In lifting the levers off the ground the slip bolt is raised
out of the recess it is in and the lever moved forward as far as possible,
the eyes revolving on the roller. The slip bolt is then allowed to drop
into a recess and the lever pulled back. This moves round the roller
and lifts the levers by means of the chains attaching them to it. The
roller may then be held in the position by means of the lifting lever or
the pawl or catch may be placed on the pinion to hold it. To allow tho
levers to drop again to the ground nothing is necessary but to take out
the slip bolt when the roller is pulled round by their weight. If it is
necessary now to put additional pressure on the levers the slip bolt is
allowed to fall into the nearest recess and the lever and roller moved
round in the contrary direction from the lifting direction, when it will
wind up the press
bar lever chains and give additional pressure to the
levers. The roller is retained in the desired position by means of the
catch or paul in the ratchet.
My Invention also facilitates the arrangement for converting parts
of drill sowing machines into horse hocs. To this end I make the
frame of the fore carriago steerage of the drill in such a manner as to
be suitable as the frame of the horse hoc. I make the steering bar to
work as a parallel ruler with the top frame of the steerage. This is also
a great improvement in the convenience for shifting the steering bar.
When the horse hoc is required the steerage is detached from the drill
and the steering bar adjusted at its greatest distance from the steerage
frame. Shafts are then bolted or otherwise secured to the steering bar
and the top frame of the steerage and additional strengthening stays
attached. This completes the frame of the horse hoc.
The usual swing
hoc may be attached to this frame in a suitable manner and the raising or
depressing of the hoes may be effected in the same manner as described
above for raising or depressing the lovers of the drill. Another plan for
raising or depressing the hoes is to have a pulley on the bar actuating
the lifting and depressing levers and make a chain turn the pulley so
that by pulling the chain one way the hoes are raised and by pulling it
the other they are depressed. As the hoes have to be moved from sido
to side in working I make the raising and depressing levers actuate
rollers on which the press bars of the hoes can run.