IMPROVEMENTS IN MINER'S OR OTHER PICKS, HACKS AND SIMILAR TOOLS
Year: 1885

page_text: We, WILLIAM RIDLEY CARR, Engineer, JOHN URWIN, Engineer, and JOSEPH
FREDERICK BARLOW, Miner, all of Low Benwell, in the County of Northumberland,
do hereby declare the nature of said invention for "IMPROVEMENTS IN MINER'S OR
OTHER PICKS, HACKS AND SIMILAR TOOLS " to be as follows:-
The improvements consist firstly, and chiefly, in the formation of the working or
effective part of the head toward the point and secondly in the fixing of the head
to the shaft when fitted into a metal socket, as in Bury's, Hardy's and similar
modes of fitting.
The improvements are applicable to picks of all kinds, pick-axes hacks and all
similar tools where a sharp tapering point is required.
In all such tools as now made the transverse section of the head is a rectangle,
the longer sides of which, are in the direction of the depth, and the shorter sides, in
the direction of the breadth, at the junction with shaft and gradually taper till the
four sides form a square but still in same relation to each other, and thence taper
to a point.
According to our invention the transverse section of the head is a long diamond
shape at or near the junction in the shaft gradually tapering until the
diamond assumes the form of a square set thus
point.
and thence tapering to a
When the head is fitted into a metal socket on shaft we propose to continue the
diamond section through the socket, the upper part of which will be A shaped to
receive the head, and to fill in a V piece under the lower V shaped part of the
head (kept in position endwise by pins through the socket) which will have a
tapered key to set it up as wear takes place, the wedge action making a much
firmer fitting than is possible with any of the ordinary shaped heads in their
sockets. When the head is fitted direct on to the shaft it is swelled out to form
an eye and secured in the ordinary way.

page_text: Instead of making the whole of the head of diamond section the working
portions only may be so shaped and thus old tools may be altered to our improved
form, or loose points may be made according to our invention and fitted into
sockets as in stone-masons' tools.
The special advantages of this form of section are-
1st That the pick or other tool clears itself more readily and does not tend to set
fast when working in soft substances.
2nd That it is more effective in penetrating and dividing the substance equal
power applied producing a much greater result or the same result with much less
exertion of power..
3rd That it is more cheaply manufactured, stronger and lighter, and more easily
sharpened and kept in working order.
4th That when fitted as described to the shaft, by a metal socket piece, the
diamond shape secures a firmer and better fitting.

page_text: шртотошел - шшого or other FICKS, Hacks, ana
similar Tools.
We, WILLIAM RIDLEY CARR, Engineer, JOHN URWIN, Engineer, and JOSEPH
FREDERICK BARLOW; Miner, all of Low Benwell in the County of Northumberland,
do hereby declare the nature of said invention to be particularly described and
ascertained in and by the following statement :-
The improvements consist firstly and chiefly, in the formation of the working or
effective part of the head toward the point and secondly in the fixing of the head
to the shaft when fitted into a metal socket, as in Bury's, Hardy's and similar
modes of fitting.
The improvements are applicable to picks of all kinds, pick-axes hacks and all
similar tools where a sharp tapering point is required.
In all such tools as now made the transverse section of the head is a rectangle,
the longer sides of which, are in the direction of the depth, and the shorter sides,.
in the direction of the breadth, at the junction with shaft and gradually taper till
the four sides form a square but still in same relation to each other; and thence.
taper to a point.
According to our invention the transverse section of the head is a long diamond
shape at or near the junction on the shaft gradually tapering until the
and thence tapering to a
*
diamond assumes the form of a square set thus
point.
When the head is fitted into a metal socket on shaft we propose to continue the
diamond section through the socket, the upper part of which will be A shaped to
receive the head, and to fill in a V piece under the lower V shaped part of the head
kept in position endwise by pins through the socket which will have a tapered
key or keys to set it up as wear takes place the wedge action making a much
firmer fitting than is possible with any of the ordinary shaped heads in their
Bockets.
When the head is fitted direct on to the shaft it is swelled out to form an eye
and secured in the ordinary way.
Instead of making the whole of the head of diamond section the working
portions only may be so shaped and thus old tools may be altered to our improved
form, or loose points may be made according to our invention and fitted into
sockets as in stone masons tools.
'
The special advantages of this form of section are
1st That the pick or other tool clears itself more readily and does not tend to
set fast when working in soft substances.
2nd That it is more effective in penetrating and dividing the substance equal
power applied producing a much greater result or the same result with much less
exertion of power.

page_text: 3rd That it is more cheaply manufactured, stronger and lighter, and more easily
sharpened and kept in working order.
4th That when fitted as described to the shaft, by a metal socket piece, the
diamond shape secures a firmer and better fitting.
DESCRIPTION OF DRAWINGS.
Figure 1 shews a side view of a pick formed according to our invention, the
blade B of which is swelled out to an eye to fit on a tapered metallic ferrule F. on
head of handle H. and Figure 2 is a plan of same.
The section at each side of
Figure 1, shew the form of blade on cross-section at junction with the eye and at
near point of a pick made according to our invention and of a common pick
respectively.
Figure 3 shews a section at right angle to blade and Figure 4 a section on line
of blade of the method of fitting a pick blade shaped according to our invention into
a metal socket fixed on head of shaft.
B is the blade the diamond section of which is continued right through the
socket S the top of which is shaped to receive the upper angles. The blade being
inserted in socket-two wedge pieces W shaped to fit the lower angles are slipped
in between blade and cavity in socket and prevented slipping out by set piece P
through socket. A. tapered key K inserted under each piece is driven in and forces
the wedge piece W upward and thus fix the blade firmly in socket.
It is obvious that any other mode of fixing the blade' to the shaft adopted with
common picks is applicable to our improved form of bladé also that pick axes
backs and other tools similar in their actions to picks can be made according
to our invention.
Having now particularly described and ascertained the nature of our said
invention and in what manner the same is to be performed we declare that what
we claim is :-
In miner's or other picks, pick-axes, hacks, and similar tools the formation of the
head or blade, either throughout or a portion from point toward centre, of a
diamond section having two opposite cutting edges at right angles to line of
handle and two other opposite cutting edges in plane of handle and the method of
fixing such heads or blades to handle, when of diamond section throughout, by
means of a socket, wedges and keys, substantially as described and shewn.
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