Improvements in Adjustable Pit Props and Appliances for Shoring and Strutting in Mines and the like purposes.
Year: 1899

page_text: [ate of Application, 115th July, 1899
Complete Specification Left, 22nd Mar., 1900-Accepted, 23rd June, 1900
Improvements in Adjustable Pit Props and Appliances for Shoring
and Strutting in Mines and the like purposes.
I, JOHN GASCOYNE, of No. 4, Upper Pleasley, in the County of Derby, Haulage
Contractor, do hereby declare the nature of my invention to be as follows;
My invention relates more particularly to metallic props and although applic-
able to a variety of purposes a description of my invention as applied to a
metallic prop employed for supporting and staying the roof and sides of a mine
working, will suffice.
The object of my invention is to construct an adjustable metallic prop which
may be employed for the support of a mine roof without its being fastened by
excessive pressure, at the same time to allow of the roof to settle down on to
the pack walls so that when necessary the props may be recovered with com-
parative safety thereby ensuring a reduction of working expenses.
I carry out my invention in the following manner.
1 do not confine myself to any particular form in the main portion of my
improved metallic prop which may be made of iron or steel of H or other con-
venient section, or double or single headed rails may be employed.
In conjunction with this main portion of my improved prop 1 employ a
movable crown which is so formed as to allow of its being set firmly on the top
of the prop or it may be recessed to receive the top of the prop or in some cases
the end of the metallic or main portion of the prop may be suitably cut and
formed to receive the crown. This crown is also recessed and in some cases
provided with indents to receive a vertical, auxiliary, making up piece of timber,
somewhat like a very short timber pit prop. Above this auxiliary timber
making up piece I employ the usual timber cap piece or lid so that when the
prop is being placed into position the auxiliary timbers can be regulated and
adjusted to the required length and the whole prop placed into position.
The crown or head piece may be either cast, rolled, stamped, or otherwise
formed of a shape which would vary according to the section of the main
portion of the metallic prop and likewise to the shape of the vertical auxiliary
timber which may be employed.
I am aware that metallic props of various sections such as I have described
have been employed for shoring and strutting in mines and the like purposes
and I lay no claim to novelty for such use in my present invention, the
essential feature of which is, the employment of a particular constructed crown
adapted for use with such metallic props in combination with the vertical,
auxiliary, timber strut and crown piece as herein described.
Dalhin 12th law of Jule 1899
R. HEBER RADFORD,
Agent for the Applicant.

page_text: Improvements in Adjustable Pit Props and Appliances for Shoring
and Strutting in Mines and the like purposes.
I, JOHN GASCOYNE, of No. 4, Upper Pleasley, in the County of Derby, Haulage
Contractor, do hereby declare the nature of my invention and in what manner
the same is to be performed to be particularly described and ascertained in
and by the following statement:-
-
My invention relates more particularly to metallic props and although applic-
able to a variety of purposes a description of my invention as applied to
metallic prop employed for supporting and staying the roof and sides of a mine
working will suffice.
The object of my invention is to construct an adjustable metallic prop which
may be employed for the support of a mine roof without its being fastened by
excessive pressure, at the same time to allow of the roof to settle down on to
the pack walls, so that when necessary the props may be recovered with com-
parative safety thereby ensuring a reduction of working expenses.
I carry out my invention in the following manner.
The nature of my invention will be better understood on reference to the
accompanying sheet of drawings in which,
Fig. 1, is an elevation of one of my improved metallic pit props employed
to support a mine roof, fitted with a metallic crown and a vertical auxiliary
making up piece of timber.
Fig. 2, is an elevation of an ordinary wood pit prop employed to support a
mine roof, fitted with a metallic crown and a vertical auxiliary making up piece
of timber.
Fig. 3, is an enlarged sectional elevation of a movable metallic crown
employed in conjunction with metallic props.
Fig. 4, is a plan of the same looking on the top.
Fig. 5, is a plan, looking on the bottom of the same.
Figs. 6, 7, 8, 9, & 10 are some of the sections which may be employed for
the main portion of the metallic prop.
Fig. 11, is an enlarged sectional elevation of a movable metallic crown
employed in conjunction with wood props.
Fig. 12, is a plan of the same looking on the top.
Fig. 13, is a plan looking on the bottom of the same.
The same letters refer to similar parts throughout the several views.
I do not confine myself to any particular form in the main portion of my
improved metallic prop, a, which may be made of iron or steel of H or other
convenient section, or double or single headed rails may be employed.
In conjunction with this main portion, a, of my improved prop I employ a
movable crown, b, which is so formed as to allow of its being set firmly on the
top of the prop, or it may be recessed as at e, Figs. 3 and 5 to receive the top
of the prop, or in some cases the end of the metallic or main portion of the
prop may be suitably cut and formed to receive the crown. This crown is also
recessed and in some cases provided with indents as at f, Figs. 3 and 4, to
receive a vertical auxiliary making up piece of timber, c, somewhat like a very
short timber pit prop.
Above this auxiliary timber making up piece I employ
the usual timber cap piece, or lid, , so that when the prop is being placed
into position the auxiliary timbers can be regulated to the required length and
the whole prop placed into position.
The crown or head piece, b, may be either cast, rolled, stamped or otherwise
formed of a shape which would vary according to the section of the main

page_text: portion of the metallic prop and likewise to the shape of the vertical auxiliary
timber which may be employed.
I am aware that metallic props of various sections such as I have described
have been employed for shoring and strutting in mines and the like purposes
and I lay no claim to novelty for such use in my present invention.
As the movable crown and auxiliary making up piece of my improved prop
can be employed in conjunction with wood props and the usual cap piece or
lid. I have illustrated in Fig. 2 the method of such application in which a¹,
represents the wood pit prop, b, the crown, e, the auxiliary making piece
and d, the usual cap piece or lid and Figs. 11, 12, and 13, are enlarged views
of such metallic crown in which, e¹, is the recess to receive the top of the prop
and, f, the recess to receive the vertical auxiliary making up piece of timber c¹.
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
1 claim is:-
-
1. In adjustable pit props, the employment of a metallic crown b, formed
and adapted for use with various or particular sections of metallic pit props, a,
in combination with a vertical auxiliary timber strut, c, and cap piece, d, in
the manner and for the purposes substantially as herein described and illustrated.
2. In adjustable pit props, the employment of a metallic crown 6', formed
and adapted for use with various or particular sections of wooden pit props, a¹,
in combination with a vertical auxiliary timber strut, cl, and cap piece, d, in
the manner and for the purposes substantially as herein described and illustrated.
Dated this 21st day of March 1900.
R. HEBER RADFORD,
Agent for the Applicant.