Year: 1887

page_text: Date of Application, 14th Apr., 1887
Complete Left, 20th Dec., 1887
Complete Accepted, 10th Feb., 1888
I, SAMUEL SIDNEY BROMHEAD of 97 Newgate Street, London in the County of
Middlesex, Patent Agent (communicated) do hereby declare the nature of this
invention to be as follows :-
This invention is designed to supply a Miner's or Navvy's pick with loose points
which shall be complete in itself requiring no separate drift or spanner, and shall be
easy to fix and convenient in use, while perfectly firm and capable of sustaining all
the stress of hard work.
This improved pick consists of a head with single or double ends as may be
preferred furnished with a socket or sockets corresponding with the sturts of the
points, and having on its inner side, that is to say on the side nearest to the handle a
square headed set screw the point of which enters the cavity of the socket at right
angles and screws tightly into and against the stem of the pick point, in which a hole
is formed to receive it. A swell or boss is formed on the pickhead at the spot where
the screw enters, so as to afford the requisite depth of thread. This set screw retains
the pick point in position in the socket.
The stem of the point is of an oblong or oval shape tapering slightly towards its
extremity which is blunt and fitted accurately against the end of the socket so as to
bear solidly against it in addition to the bearing of the shoulder of the point against
the outer edge of the socket.
One great feature in this improved pick is the following-In the flattened stem of
the point, a square hole is made which corresponds exactly with the head of the set
screw before described, so that each point forms a wrench or spanner by means of
which other points can be changed when necessary.

page_text: It will thus be obvious that when a point is become blunt, all the miner has to do is
to slacken the set screw with the aid of the new point, take out the old point and
insert the new one and then tighten the set screw by means of the old point. He
does not therefore need to carry any separate wrench or other tool for the purpose of
changing his points.
My improved pick will be made by preference entirely of steel, and will be a great
boon to Miners or Navvys working at a distance from a blacksmith's forge. It is
adapted for all kinds of picks, and in small sizes is especially suited for prospecting in
mineral districts of new Countries.

page_text: I, SAMUEL SIDNEY BROMHEAD, of 97 Newgate Street, London, Patent Agent (a
communication from David McLean Wallace and John Mace both Blacksmiths
of Waiorongomai in the Province of Auckland, New Zealand,) 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 is designed to supply an improved form of Miner's or Navvy's Pick
with loose points which shall be complete in itself requiring no separate drift or
spanner, and shall be at once easy to fix and convenient in use while perfectly firm
and capable of sustaining all the stress of hard work and therefore specially adapted
for prospecting in new Countries.
My improved Pick consists of a "head" or centre part with the usual eye for the
handle which head may have either single or double ends as preferred. I will now
describe an ordinary Miner's Prospecting Pick with a single end.
The "head" of this pick is furnished as shewn in the accompanying drawings,
with a socket or hollow end to receive the shank of the point. It has on its inner
side, that is to say on the side nearest the handle, a swell or enlargement, in the
centre of which is a hole penetrating into the socket aforesaid. This hole is tapped to
receive a set-screw of the ordinary kind with a head of suitable size to correspond
with a hole made in the shank of the point.
The point of this set-screw screws into the cavity of the socket at right angles, and
enters a recess formed in the shank of the pick point to receive it. When screwed
tightly into position it presses firmly against the shank of the pick point and holds it
securely in the socket.
The shank of the pick point is preferably of an oblong or oval shape tapering
slightly towards its extremity which is blunt and fitted accurately against the inner
end of the socket so as to bear solidly against it. It has also a shoulder which bears
accurately against the lip or outer edge of the socket.
One special feature in this improved pick is the hole in the shank which fits the end
of the set-screw so that each separate pick point forms a wrench or spanner by means
of which another point can be inserted when change becoines necessary. This system
admits of modification in respect of the size and shape of the head of the bolt which
may be varied, but in all cases the shank of the pick point is constructed to
correspond with the head or end of the bolt, so as to act as a wrench or spanner for
tightening or loosening the set-screw.
The pick points may be pointed, or may terminate in chissel ends, or adxe or axe
shaped ends when preferred.
It will thus be obvious that when a point becomes blunt all the miner has to do is
to slacken the set-screw with the shank of the new point using it as a wrench or

page_text: spanner. He then removes the old point, inserts the new one and tightens the set-
screw by means of the old point or another new one. He does not need to carry any
separate tool for the purpose of changing his points.
My improved Pick will be made, by preference entirely of steel and will be a great
boon to Miners or others working at a distance from a blacksmith's forge.
It is therefore especially suited to new or sparsely peopled Countries.
In the accompanying drawings:
:-
Fig. 1, shews a side section of a Miner's pick shewing set-screw in its place and
the point inserted in its socket, and a square hole in the shank of the point to fit a
square head set-screw.
Fig. 2, shews an end section of a similar pick shewing the recess in the shank for
the end of the set-screw.
Fig. 3, shews a side view of the Pick-point detached from the pick-head.
A, is the pickhead.
وو
swell to receive set screw.
socket for the point.
"
"
set screw.
"
"
"
"
"
"
"
"
"
"
"
pick point.
hole in the sturt of the point to clip and turn the head of the set screw.
recess in the shank for the end of the set-screw.
shoulder of the point.
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 :-
1. A pick or pick-axe with loose point or points having a socket or sockets to
receive the shanks of the points substantially as herein described and set forth.
2. A pick or pick-axe with loose point or points the said points having an end and
shoulder bearing in or on the socket and being fastened therein by a set-screw as
herein explained and set forth.
3. A pick point with shank perforated or otherwise fitted so as to form a wrench
or spanner for fastening or unfastening the set-screw as herein described and set
forth.
Dated this 20th day of December 1887.