Improvements in Screw and Lever Mechanism for Breaking Down Rock or Coal, and for other purposes.
Year: 1894

page_text: Date of Application, 18th Aug., 1894
Complete Specification Left, 18th June, 1895-Accepted, 18th Nov., 1895.
PROVISIONAL SPECIFICATION.
Improvements in Screw and Lever Mechanism for Breaking Down
Rock or Coal, and for other purposes.
WILLIAM PEGGE Licensed Victular 92 St. Helens Avenue Swansea do hereby
declare the nature of this invention to be as follows:-
:―
An apparatus composed of compounded leverage with right & left screw-
threads between levers all made of steel to any size for any useful purpose with
steel plates bolts nuts the whole formed and made to go down bore hole and will
when the screw is worked wedge or (prise) off or break down rock or coal or other
purposes and to take the place of blasting with explosives in mines or quarries.
Dated this 16th day of August 1894.
WILLIAM PEGGE.
Improvements in Screw and Lever Mechanism for Breaking Down
Rock or Coal, and for other purposes.
1, WILLIAM PEGGE of 92, St. Helens Avenue Swansea, formerly a Licensed
Victualler and now a Brewer, 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 consists in an improved appliance for breaking down rock or coal
and for other purposes.
The appliance consists of levers diagonally disposed and arranged and pivotted
together after the manner of lazy tongs.
The levers at one end of the appliance are extended to form arms which are
connected to nuts through which is passed a right and left handed screw operated
by means of a handle, hand-wheel or the like.
As employed in breaking down rock or coal, the appliance is, when sufficiently
contracted by turning the handle or hand-wheel in the proper direction, inserted in
a hole hored for it in the rock or coal. The appliance is then expanded by turning
the handle or hand-wheel in the reverse direction, and, by the force thus exerted
upon it, the rock or coal is rent asunder and its removal facilitated.
As adapted for other purposes, the main feature of the appliance, namely, the
diagonally disposed levers arranged to open out or close together by means
of a right and left handed screw, remains the same as for breaking down coal
or rock.
In the accompanying sheet of drawings,
Fig. 1 represents a screw and lever appliance constructed and arranged in
accordance with this invention.
Fig. 2 is a side view of the levers.
The appliance consists of levers a, of steel or other suitable metal, diagonally
disposed and pivotted together, as at a', after the manner of lazy tonge. The
levers at the actuating end of the appliance are extended as arms a² which are
connected as at a to nuts 6 through which passes a screw c which at one side of the
037

page_text: handle or hand-wheel d is a right-handed screw and at the other is a left-handed
screw.
As employed for the purpose of breaking down rock or coal, the appliance is,
when sufficiently contracted by turning the handle or hand-wheel d in the proper
direction, inserted in a hole or cavity bored for its reception in the rock or coal.
(Fig. 3 shows the appliance as closely contracted.). The appliance is then
expanded by turning the handle or hand-wheel d in the reverse direction to that
required for contracting. The instrument thus exerts a force upon the rock or
coal which accordingly becomes fractured and rendered more easily removable.
As adapted for other purposes, the main feature of the appliance, namely, the
diagonally disposed levers arranged to open out or close together by means of a
right and left handed screw, remain the same as for breaking down coal or rock.
At Fig. 4 is illustrated a modification according to which the diagonally arranged
levers are so disposed that one set is centrally situated between and pivotted to
two outer sets, the latter being coupled at the upper end to form one system as
shown.
Having now particularly described and ascertained the nature of my said
invention, and in what manner the same is to be performed, I declare that what
I claim is :-
Improved screw and lever mechanism for breaking down rock and coal, and for
other purposes; the said mechanism consisting of diagonally arranged levers such
as a, of steel or other suitable metal, pivotted together and disposed as lazy tongs,
and a right and left handed screw such as c with handle d, or its equivalent, for
expanding and contracting the appliance; the parts being constructed, arranged
and operating substantially as hereinabove described with reference to the
accompanying sheet of drawings.
Dated this 4th day of November 1895.
NICHOLAS WATTS,
Bristol, Chartered Patent Agent.