An Improved Pickaxe, Adze, Hoe, or like implement.
Year: 1899

page_text: Date of Application, 12th Apr., 1899
Complete Specification Left, 12th Jan., 1900-Accepted, 24th Feb., 1900
An Improved Pickaxe, Adze, Hoe, or like implement.
I, EDMOND DALY, of Monterey, California, U.S.A., Inventor, do hereby declare
the nature of this invention to be as follows:-
This invention relates more especially to miners' pickaxes; but it is also
applicable to an adze, hoe or like implement.
The object of the invention is to provide improved means for renewing the
points or blades when worn, in a cheap, expeditious and serviceable manner
without materially weakening the body of the implement.
By this invention I provide detachable pick-points which have hardened
points and are hollow to fit the points of an ordinary pickaxe. The point of
the pick-axe has a groove across it at a suitable distance from its extremity,
and another groove extending longitudinally of the body of the pickaxe into
the firstmentioned groove at right angles, thereto.
The detachable point has a tongue, projecting rearwardly from its edge, and
bent over to form a ridge or flange at right-angles to the opening.
When the point of the pickaxe is forcibly entered into the detachable point
the ridge on the tongue springs into the transverse groove of the pick-head and
is retained in place thereby. It can be readily detached by a pointed imple-
ment inserted into the longitudinal slot in the pick-head, and beneath the spring-
tongue which can then be prized upwards, & the point removed.
A piece of rubber or the like inserted into the pick-point effectively prevents
jarr when the pickaxe strikes hard substances.
As applied to an adze, hoe or other implement, the blades are formed with
a socket having a tongue adapted to fit tenons secured to the handle and be
retained thereon in the manner aforedescribed.
In an alternative form, the pickaxe head is not pointed; but its ends are
The interior of the hollow pick-
drilled longitudinally and screw-threaded.
point has a screw-threaded stud projecting centrally and longitudinally thereof
and adapted to fit the screw-threads of the drilled and tapped ends of the pick-
head; a rubber ring or washer being placed over the stud to prevent jarr.
In the case of an adze, hoe or the like, the socket of the blade is formed with
the central stud adapted to enter a screw-threaded socket secured to the
handle.
1
10th of Anni 1809
P. R. J. WILLIS,
Agent for Applicant.

page_text: An Improved Pickaxe, Adze, Hoe, or like Implement.
I, EDMOND DALY, of Monterey, California, U.S.A., Inventor, 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 state-
ment:
-
./..
This invention relates more especially to miners' pickaxes; but it is also
applicable to an adze, hoe or like implement.
.34
The object of the invention is to provide improved means for renewing the
points or blades when worn, in a cheap, expeditious and serviceable manner
without materially weakening the body of the implement.
Reference being had to the drawings hereunto attached:-
Fig. 1 is a side elevation of a pickaxe head, partly in section to shew my
invention applied thereto.
Fig. 2 is a detail view of the underside of one of the ends of the pick-axe
head.
Fig. 3 is a part horizontal section through one of the detachable points, and
Fig. 4 is a top plan thereof.
Fig. shews my invention as applied to an adze, hoe or the like implement.
Fig. 6, is a longitudinal section through an alternative form of pick-point
and shewing the method of attaching same to the pick-head.
My invention comprises the detachable pick-points A which have hardened
extremities and have their inner ends made hollow to fit over the ends of the
pick-head as shewn at B. Tongues C extend longitudinally from the body of
the point A and have transverse and upwardly extending lips c.
At a point slightly removed from the extremities of the pick-head are trans-
verse grooves D which intersect and cross longitudinal grooves E.
A piece of india-rubber or like compressible substance F is inserted in the
hollow portion of the detachable point A.
.
In order to adjust a detachable point it is adjusted over the extremity of the
pick-head which is then swung so that the point A is brought into forcible
contact with any suitable solid substance; the force being sufficient to compress
the rubber or other substance F and to slightly expand the walls of the hollow
portion of the point A, thus permitting the extremity of the pick-axe to enter
the point A far enough to allow the lip c to spring into the groove D and
prevent removal of the point A. The removal may, however, be effected by the
insertion of a pointed bar or the like into the groove E and beneath the lip c
and the prizing upwards of the tongue C until the lip clears the edge of the
slot D. The slot D is wider than the lip c so that slight inward movement is
permitted when extreme force is applied to the point A; the jar being taken up
by the rubber F.
The application of the invention to an adze, hoe or the like is the same as
to a pick-axe, except that a suitable handle replaces the ends of the pick-axe.
In an alternative form of the invention, the extremity of the pick-head is
reduced in diameter to form a projection G which is centrally and longitudinally
bored and screw-threaded to receive one end of the screw-threaded stud H; a
clearance being left as shewn. The recess in the body of the point A fits over
the projection G and is drilled centrally and tapped to receive the projecting
forward end of the stud H. Clearance i is left between the extremity of the
projection G and the bottom of the recess in the body of the point A to permit
of the adjustment of a compressible washer over the projection G, as shewn at I.

page_text: This provision enables the point A to be adjusted tightly in place with its outer
surface corresponding to the contour of the pick-axe head.
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-axe, adze, hoe or like implement having detachable points, said
points comprising a pointed body having a hardened point, a hollow interior,
a tongue projecting inwardly from said body, and a lip formed transversely of
the body, and said pick-axe head formed at a point slightly removed from its
extremities with intersecting and transverse grooves, all substantially as and
for the purposes herein before set forth and illustrated in the drawings hereunto
annexed.
(2) An adze, hoe or like implement, having a hollow socket, a tongue pro-
jecting from the edge of said socket, a lip on said tongue, and a handle for said
adze hoe or the like formed at a point slightly removed from its extremities
with intersecting and transverse grooves, all substantially as and for the purposes
herein before set forth and illustrated in the drawings hereunto annexed.
(3) In a pick-axe having detachable points, the ends of the pick-axe head
reduced in diameter, and centrally and longitudinally bored and tapped, a screw-
threaded stud inserted in the bore and projecting therefrom and the detachable
head having a longitudinal and central hollow portion which has its extremity
longitudinally bored and tapped to receive the projecting end of the screw-
threaded stud aforesaid, and compressible washers adjusted over the reduced
portions of the pick-axe head all substantially as and for the purposes herein-
before set forth and illustrated in the drawings hereunto annexed.
Dated this 12th day of January 1900.
P. R. J. WILLIS,
Agent for Applicant.