Improvements in Picks for Mining and other purposes.
Year: 1898

page_text: Date of Application, 14th Oct., 1898-Accepted, 26th Nov.,
1898
COMPLETE SPECIFICATION.
Improvements in Picks for Mining and other purposes.
I, RHYS LLEWELLYN, of 1, Clive Terrace, Ynysybwl, near Pontypridd, in the
County of Glamorgan, Teacher of Mining and Geology, 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:-
My invention relates to improvements in miners and like picks, and has for its
object, the construction of the same in such a manner that the picking arms there-
of are adapted to be detached from the head, at the will of the operator, to
facilitate its use in places where a double armed pick as at present made and
used would be inoperative.
For the purposes of enabling my invention to be more clearly understood, I
have hereunto appended a sheet of drawings, in which:-
Fig. 1 is an elevational view, partly in section of my said improved pick.
Fig. 2 is a plan view of same.
Fig. 3 is a sectional elevation, with one of the detachable picking arms removed.
Figs. 4 and 5 are side and front elevations respectively of a detail hereinafter
described.
In carrying my invention into effect I cast or otherwise produce from any suit-
able metal or combination of metals, the head A of the pick, provided with
three sockets B, C, and D, the two former of which are preferably of rectangular
formation in cross section, for the purposes of receiving the arms E F of the pick,
while the latter is preferably of elliptical formation in cross section for receiving
the helve or handle G. Upon the under surface of the sockets B C, and pre-
ferably made integrally therewith, I provide two internally threaded bosses H, J,
to accomodate which the socket D is cut away and tapered at K L, the said
bosses H, J, being provided with screws M N, which, when screwed home engage
with slots or recesses e, f, formed in the arms E F of the pick. The inner surface
of the socket D is grooved or serrated at its sides g, and h, and when the helve G
is placed in position therein a like serrated or grooved metal wedge 0 (Figs. 4
and 5) is driven between the helve and the said ends, thereby compressing the
helve and engaging with the said serrations or grooves in the socket D, and so
operating to retain the helve in position, which may be further enhanced by a
screw P passing through a threaded hole in D and engaging with the helve G,
as illustrated in Fig. 1.
The inner ends of the arms E F of the pick, are formed of rectangular forma-
tion in cross section, to correspond with that of the sockets B C, into which they
fit closely when the screws M N have been withdrawn sufficiently for that purpose,
and when E F are so inserted the said screws are driven home into the
recesses ef, thus ensuring a secure hold upon the said arms for retaining them
in position.
It will thus be clearly understood, that when the miner or other workman is
engaged in a narrow space, insufficient for the proper movement of a pick when
both arms E F are in position, either of these may be at once removed, (by with-

page_text: drawing the screw securing it), a sufficient distance to clear the recess it engages
with, as shewn in Fig. 3.
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:
1st. The herein described method of constructing picks for mining and other
purposes, the picking arms of which are detachable from the head, substantially
as and for the purposes herein set forth and shewn.
a
2nd. The herein described pick for the use of miners and others, consisting of
a head such as A, provided with sockets B C, for receiving and holding detach-
able picking-arms such as E and F, and a socket D for receiving and holding
helve or handle G, the said sockets B C having bosses H and J, receiving
screws M and N, for engaging with holes or recesses e f in E F, when the latter
are in position, the socket D having serrated or grooved surfaces g and h for
retaining serrated or grooved wedges such as Q, when driven in between these and
the helve or handle G, substantially as herein set forth and shewn by the
appended drawings.
Dated this 14th day of October 1898
GEO. THOS. HYDE,
1, Broad Street Buildings, Liverpool Street, London, E.C.,
Agent for the Applicant.