An Upright Lever and Spring for Obtaining Power by Weights.
Year: 1896

page_text: Date of Application, 15th Apr., 1896
Complete Specification Left, 15th Jan., 1897-Accepted, 15th Apr., 1897
PROVISIONAL SPECIFICATION.
An Upright Lever and Spring for Obtaining Power by Weights.
JOHN ROBERT KNIGHT 39 Carysfort Avenue Black Rock Co. Dublin no
occupation do hereby declare the nature of this invention to be as follows:-
The lever to be upright and about 6 foot long above the pivot on which it works,
and to have a ring tightly fixed on about 12 in. from top, and a screw and nut at top
to secure the weights the weights to be round and flat with hole in centre to fit on
tight, and to be stone each, or first put on 1 stone, and then stone or more if
required, this will add power without diminishing speed, the weights to be put on top
of lever over the ring and fastened with the nut, a strong spring to move both ways
with the lever, to be fixed close at the side of the lever below at the pivot and to be
fastened to the lever above about 2 feet from the top, the lever will be found to work
easily by hand or machinery about 2 feet above the pivot, the weight on top will give
great power below, the spring I tried was a leaf of car spring steel 2 in. wide
6 foot long.
11000
An Upright Lever and Spring for Obtaining Power by Weights.
JOHN ROBERT KNIGHT 39 Carysfort Avenue Black Rock Co. Dublin no
occupation 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 lever A to be upright and 6 foot long, (or less or more as may be required)
above the pivot B on which it works, made of 1 in. round iron and strengthened at.
the pivot, and reduced to in. for 9 in. from the top, for the weights C, with screw
and nut at top to secure them, the weights to be round and 4 in. in diameter and flat
on each end, with a in. hole in centre to fit on top of lever where reduced, the
weights to be stone each, or first put on 1 stone and then stone or more if required;
this will add power without diminishing speed, the weights when put on top of lever
to be fastend with the nut, the spring D to be flat steel 2 in. wide and 6 foot long and
to be fastend close at the side of the lever, 9 or 12 in. below the pivot on which the
lever works, to prevent its snaping, and to be fastend to the lever above, just under
where it is reduced for the weights, about 11 in. from the top with an iron clasp E,
with hole through spring and clasp, for boult and nut to go through and fasten, the
lever will be found to work easily by hand or machinery 2 foot above the pivot, if the
part of the lever under the pivot to the connecting rod F, be made 12 in. to work a
crank G, of 5 in. will give a pull of 20 in. to work it at a point 2 foot above the
pivot, the weights on top will give great power below, weights of lead best.
The above would be found to suit for saws, leaths, or vehicles, or for propelling
boats, or small sailing vessels, or any machinery worked by cranks.

page_text: The way I was led to think of an upright lever, with spring and weights on top
was by putting the point of a carving knife with a thin blade and a heavy handle into
a slit in a table and springing it back and forward the thought struck me that the
weight on top would give great power below, and by working the blade below found
it would spring easily back and forward and though that occured more than fifty
years ago, I never saw or heard of any thing similar in machinery since.
Having now particularly discribed 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
An upright lever with spring, which may be straight or otherwise to work back
and forward with lever, obtaining power by weights on top, as depicted in drawing,
and substantially herein discribed and set forth.
JOHN ROBERT KNIGHT.