Improvements in Picks, Hammers, and other like Tools.
Year: 1894

page_text: Date of Application, 15th May, 1894 Accepted, 30th June, 1894
COMPLETE SPECIFICATION.
Improvements in Picks, Hammers, and other like Tools.
I, MARTIN HARDSOCG, of Ottumwa, in the County of Wapello, and State of
Iowa, United States of America, Gentleman, 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:
The object of my invention is to provide a simple economical and efficient
mechanism for locking the ferrule and pick or hammer of a mining tool together,
and it consists in the features and details of construction hereinafter described and
claimed.
In the drawings :
Fig. 1 is a side elevation of my improved locking device applied to a miner's
pick.
Fig. 2 a side elevation of the same applied to a hammer.
Fig. 3 an enlarged sectional detail taken on line 3 of Fig. 1.
Fig. 4 a perspective view of the key or wrench used in connection with the
locking bolt.
Fig. 5 an enlarged perspective view of the ferrule.
Fig. 6 an enlarged perspective view of a portion of the pick.
Fig. 7 a perspective view of the locking bolt, and
Fig. 8 a sectional view showing a modified form of my locking bolt.
In the ordinary construction of miners' tools-like picks, knapping hammers,
axes, etc. the main portion of the tool and ferrule are generally formed in one
piece, so that the handle and tool become one consolidated structure. The
objections. to this form of tool are that in repairing, the entire tool, including
the pick, ferrule and handle have to be sent to the shop to be repaired, as
well as taking up a great deal of space in shipping the tools with their handles.
It is the design of my invention to obviate these objections, and to provide a
mining tool with a ferrule so constructed as to be interchanged with any number of
different kinds of tools, so that one handle may be used in connection with the
pick, knapping hammer or hatchet and axe, thus reducing the cost of an entire
set of tools, as well as making them easier to handle while repairing or sharpening.
As illustrated in the drawings, I have preferred to show my improved mechanism
adapted to be used in connection with a miner's pick and knapping hammer. In
constructing my improved locking device, I take a pickaxe or hammer head A and
provide it with a dovetailed recess B, preferably wedge-shaped, that is, the
opening at one side b, is wider than the opening at the other side 6'. I provide the
usual ferrule C, with a dovetailed slide D, adapted to fit the recess of the pick, so
that, as it is drawn forward, it will be wedged tightly in place. To securely lock
the ferrule and pickaxe or hammer head together, 1 provide a locking bolt E, with
a threaded portion e, adapted to enter a threaded opening F in the ferrule, and
have its flanged head e impinge against a shoulder 6 in the pickaxe or hammer
head, so that when the locking bolt is rotated in one direction, this head will
impinge against the shoulder in the pickaxe and act to draw the wedge shaped
Blide of the ferrule into locking engagement with the recess in the pickaxe. I
provide the locking bolt with a square axial opening e adapted to receive the
wrench G, for the purpose of rotating the bolt and locking or unlocking the
ferrule and head. The head of the locking bolt is preferably flattened at one
side as at e³ so that the bolt may be turned to have its flattened portion coincide
with the upper portion of the slide when the same is placed in the recess of the
pickaxe or hammer head.

page_text: In Fig. 8 I have shown a modified form of my locking bolt, which consists in
providing it with a smooth cylindrical portion H adapted to fit an opening in the
ferrule, and provided at one end with a circular nut 4, which may be held in
position by any convenient method, and a cam-shaped head at the other end
adapted to impinge against the shoulder 6 in the pickaxe or hammer head. The
locking bolt is provided with the usual square opening shown in Fig. 7, so that
on turning the same, the cam portion h will impinge against the shoulder of the
pickaxe or hammer head and act to securely lock the ferrule and head together.
While I have described my invention more or less minutely as to details, I do
not desire to be limited thereto unduly, any more than is pointed out in the
claims. On the contrary I contemplate changes in form, construction and
arrangement, and the use of equivalents as occasion may warrant or necessity
demand.
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. In mining tools, the combination of a main portion forming the axe or
hammer head, and a ferrule adapted to receive a handle, one portion provided with
a wedge-shaped dovetailed recess and the other with a wedge-shaped dovetailed
slide adapted to fit the same, and mechanism to securely hold both portions together,
substantially as described.
2. In mining tools, the combination of a main portion forming the axe or hammer
head, and a ferrule adapted to receive a handle, one portion provided with a wedge-
shaped dovetailed recess and the other with a wedge-shaped dovetailed slide adapted
to fit the same and a locking bolt to securely hold both portions together, substan-
tially as described.
3. In mining tools, the combination of a main portion forming the axe or hammer
head, and a ferrule adapted to receive a handle, one portion being provided with
a wedge shaped dovetailed recess and the other with a slide adapted to fit the same,
and a locking bolt having a threaded portion adapted to fit a threaded opening
in the ferrule, and provided with a flanged head adapted to impinge against a
shoulder on the axe and securely lock the ferrule and axe together, substantially as
described.
Dated thin 15th dow of Man 1001