Year: 1887

page_text: Date of Application, 19th Oct., 1887
Complete Specification Left, 17th July, 1888
Complete Specification Accepted, 17th Aug., 1888
I THOMAS TRUSSELL of No. 3 Pole Street off Dame Agnes Street in the town of
Nottingham in the County of the same town Mine Surveyor do hereby declare the
nature of this invention to be as follows:-
The object of this invention is to secure picks and like tools to their Shafts, in such
a manner that they can be easily and readily detached and attached to each other,
To do this I attach a hoop or Socket B to one end of the pick shaft, and I make
that part of the pick blade A A which lies or fits in the socket B less in width at the
centre and widening out each way from the centre to the sides of the socket B as
shewn in sketch (1).
On the inside of the hoop or socket B are projections D D shaped to fit into the
wedged or concaved part of the pick blade A A. as shown in the sketches (1) & (3).
These projections D D do not extend to the bottom of the socket B as shewn in
fig. (3), so that when the Cottar C is withdrawn from the socket B, the pick blade
falls down in the socket, and the top side of the pick blade lies below the bottom side
of the projections D D, therefore the pick blade can be drawn out of the socket and
so detached from the shaft as required..
As a modification the pick blade can be made with one side only, concave or wedge
shaped and the other side flat and the socket made to suit it-or it may have two
convex side & socket to suit it, or one convex side.
DL:
100

page_text: COMPLETE SPECIFICATION.
Improvements in the Means for Securing Picks and like Tools to
their Shafts.
I THOMAS TRUSSELL of Number "3" Pole Street off Dame Agnes Street in the
town of Nottingham in the county of the same town Mining Surveyor 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 relates to Improvements in the construction of Picks and Pick
Heads or sockets, and in the means employed in securing them, and particularly
relates to that class of Picks, which are constructed without holes in them, for securing
them to their shafts.
This class of pick, is usually secured to their Shafts, by means of a metal socket 1
permanently attached to one end of the shaft and into this socket, the pick is placed,
the top part of the pick, which lies within the socket, is formed or constructed with
depressions or projections, which fit into projections or depressions on the top of the
socket aforesaid..
In this said invention, I form or construct a depression or depressions on the side
or sides of the pick, and a projection or projections on the side or sides of the socket,
so as to fit into those depressions formed on the pick aforesaid, or I form depressions &
projections on the pick and corresponding depressions & projections on the socket, to
fit into those on the pick, as herein after described, specified and illustrated by
accompanying drawings fig. 1 to 11.
Fig. 1. is a front view of the pick as seen when secured to its Shaft-ready for use.
A. A. is the pick B. is the socket permanently attached to the shaft S. C. C is a
Cottar or Key for keeping the pick in its position when in the socket.
Fig. 2. is a front view in section, shewing the Cottar removed from the socket.
Fig. 3. is a plan in section, through the line G H. across fig. 2. and shows the
projections D. D formed or constructed on the socket B. and the corresponding
depressions F. F. in the pick A. A.
Figs. 78. 9. 10 & 11 shew other forms or shapes of the depressions & projections
that may be formed on the pick A. A. which have each their corresponding depressions
& projections formed on their sockets respectively.
On reference to figs. 1 & 2. it will be seen that the projections D D formed on the
socket B do not extend or reach down to the bottom of the pick A. A therefore when
the Cottar C. C. is withdrawn from the underside of the Pick A A. the top or upper
side of the pick aforesaid (lying or fitting in the socket) falls or can be pushed below,
the projections D. D. therefore the depressions F. F. being no longer in contact or
held by the projections D. D. formed on the socket aforesaid, the pick is free to be
withdrawn from the socket B.

page_text: Where the pick is required to do heavy work the depressions (or depressions & pro-
jections) need not extend to the bottom or whole depth of the pick A. A. as is shewn
by figs. 5 & 6.
་
Having now particularly described 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
The construction of an improved pick & pick head or socket with depressions and
projections formed made or constructed fitted and arranged as not to get loose from each
other as substantially described, specified herein and illustrated by the accompanying
drawings in figs. 1 to 11, but be it understood that I do not limit myself to the exact
or particular shape or form of the depressions and projections as shewn in figs. 1 to 11,
as these shapes may be varied so as to still carry out the principal of my invention,
which is the formation of suitablily shaped depression or depressions & projections on
the side or sides of the Pick with correspondingly shaped depressions & projections on
the sides of the socket so fitted and arranged as not to get loose from each other.
Dated this Fourteenth day of July 1888.
THOMAS TRUSSELL,
Applicant.