Improvements in Picks.
Year: 1890

page_text: CUBIT LIMOITICATION.
Improvements in Picks.
We JOSEPH MITCHELL of 14 Broom Close Sheffield in the County of York,
Engineer, JAMES FERNEE of Chantrey Road Norton Woodseats Engineer, ALAN
BADGER of 34 Bank Street Sheffield Agent, JOHN MARTIN WALL of 30 Watson
Walk Sheffield Accountant, JOHN HALL of Paradise Square Sheffield Advertisement
Contractor and GEORGE SMITH of Paradise Square Sheffield Advertisement Con-
tractor 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 in writing, and on reference to the accompanying sheet of
drawings, that is to say :-
This Invention relates to certain new simple and efficient improvements in the
construction of picks, such as those used by ininers and in other trades, that have
been made with detachable pick points, the object of the present invention being the
making of such picks in a fewer number of main parts or pieces than as heretofore
made, and those improved picks will be much less liable to get out of order or to he
injured or broken than hitherto has often happened.
In order that the present invention may be fully understood it is illustrated on the
accompanying sheet of explanatory drawings which sheet is marked with Figures and
letters of reference corresponding with those in the following description thereof, the
same letters of reference indicating like parts in all the Figures.
Figure 1, is an elevation, one half of the Figure being in section, of that portion
of a pick tool to which the present improvements are applied.
Figure 2, is a plan of the same.
Figure 3, is an elevation of the wedge provided for securing and keeping in
place the whole of the portions of the pick tool, and Figure 4, is a plan of the same.
Figure 5, is a cross section of the head of the pick; and,
Figure 6, shows one of the detachable and easily changeable pick points.
a, is the shaft or handle of the pick, b, is the wedge, c, those portions of the head
or blade of the pick in which the pick points are held, and d, represents the pick
points.
In carrying out this invention in practice, the head or blade c. of this improved
construction of pick and the other portions of the tool, excepting the wood handle or
shaft a, are made or cast in steel or of other suitable strong and durable metal or
compound of metals. This head or blade c, is pierced or made hollow internally (the
hollowed portions being indicated by the dotted lines at Figure 2), from the eye or
hole or opening made in the head or blade through which the shaft or handle a, is
passed, and tightly wedged therein by means of the wedge b, to each end of the pick
head or blade at c¹. The pierced or hollowed portions of the head or blade c, are
made tapering gradually towards c', so as to receive and hold the pick points d,
which points are also tapered as seen in Figures 1, and 6.
In putting this pick together the pick points d, are first inserted, through the eye
or opening or hole made in the middle portion of the pick head or blade c, into the
pierced or hollowed out portions of the pick head or blade and then pushed point
first through as far as they will go, the wedge b, is then put in the slit or recess
made to hold it in the top of the shaft or handle a, (see Figure 5,) after which the
wedged top of the shaft or handle is pushed down through the eye or opening or
hole made in the pick head or blade c, and by reason of the sides of the wedge b,
heing made slightly tapering from the top to the bottom thereof the base or blunt
ends of the pick points, when the shaft or handle a, is driven home, will be held firm and
immovable, in their places, and when required to change either or both pick points
for other ones all the constituent parts of the pick can be readily loosened by tapping,
knocking, or pressing out the shaft or handle and wedge.

page_text: Having now particularly described and ascertained the nature of the said inven-
tion, and in what manner the same is to be performed, we declare that what we
claim is
The improved construction, combination, and arrangement of the several parts
constituting a novel, simple, and effective pick for use by miners, and in other trades
where picks are employed, consisting of a wedged shaft or handle, pierced and
tapering hollowed out portions in the head or blade of the pick, and tapering pick
points; all substantially as hereinbefore described and as illustrated on the
accompanying drawing, or any equivalent modification thereof or variation therein.
Dated this 22nd day of May 1890.
.
BRISTOW HUNT, R.P.A.,
Aldine Chambers, Sheffield, Agent for the Applicants.