AN IMPROVED PICK EXCAVATOR AND DISCHARGING ELEVATOR FOR EXCAVATING FOR FOUNDATIONS, SURFACING ROADS, EXCAVATING CLAY, SAND, SOIL, AND OTHER LIKE SUBSTANCES.
Year: 1873

page_text: LETTERS PATENT to Robert Stone, of Liverpool, in the County of
Lancaster, for the Invention of "" AN IMPROVED PICK EXCAVATOR AND
DISCHARGING ELEVATOR FOR EXCAVATING FOR FOUNDATIONS, SURFACING
ROADS, EXCAVATING CLAY, SAND, SOIL, AND OTHER LIKE SUBSTANCES.”.
PROVISIONAL SPECIFICATION left by the said Robert Stone at the
Office of the Commissioners of Patents, with his Petition, on the
15th August 1878.
I, ROBERT STONE, of Liverpool, in the County of Lancaster, do hereby
declare the nature of the said Invention for “AN IMPROVED PICK EXCAVATOR
AND DISCHARGING ELEVATOR FOR EXCAVATING FOR FOUNDATIONS, SURFACING ROADS,
EXCAVATING CLAY, SAND, SOIL, AND OTHER LIKE SUBSTANCES," to be as
follows:-
-5
A pick excavator and discharging elevator according to this Invention
consists of a. circular diso or discs which are carried on a shaft mounted
in quitable bearings carried on a truck or wheeled frame, The disc or

page_text: discs are so mounted that they will revolve freely upon suitable power
being applied. The discs are fitted with radial slots or guides. In these
slots or guides are sliding weights or metal blocks so arranged that picks,
bills, or chisels may be screwed or otherwise attached thereto. These
weights and picks are so arranged that they fall down the slides or slots
in the discs as the discs rotate, the picks projecting beyond the surface.
of the discs sufficiently to operate upon the material requiring loosening.
Carried on the same truck or wheeled framework and immediately
behind the revolving discs is an elevator, which lifts the loosened
material and discharges the same into a cart or truck immediately
behind the pick excavator. The picks on the discs are so arranged that
they will work at banks or on road surfaces as may be required, also the
picks are so arranged that they can be removed for sharpening by merely
unscrewing or detaching the same from the weights.
:
The picks sliding loose with the weights in the discs descend in
manner similar to a pile driver or tilt hammer as the discs rotate.
In some instances the picks may be fixed to the discs and arranged to
rotate so as to tear, rip up, or draw away the material under treatment,
and deliver the same into a cart or truck behind without the aid of the
before-mentioned elevator..
The truck carrying the pick excavator may be drawn or driven by an
engine.or winch, or by horse power, and may run on rails or on the
ground, and the discs may be rotated by suitable pulleys and straps or
cog wheels, the elevator being also worked by any suitable system of
bands or cog wheels as is well understood.
•
SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said Robert Stone in the Great Seal Patent Office
on the 18th February 1874.
'
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, ROBERT
STONE, of Liverpool, in the County of Lancaster, send greeting..
-
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Fifteenth day of August, in the year of
our Lord One thousand eight hundred and seventy-three, in the thirty-
3

page_text: seventh year of Her reign, did, for Herself, Her heirs and successors,
give and grant unto me, the said Robert. Stone,- Her-special-licence
that I, the said Robert Stone, my executors, administrators, and assigns,
or such, others as I, the said Robert Stone, my executors, admini-
strators, and assigns, should at any time agree with, and no others,
from time to time and at all times thereafter during the term therein
expressed, should and lawfully might make, use, exercise, and vend,
within the United Kingdom of Great Britain and Ireland; the Channel
Islands, and Isle of Man, an Invention for "AN. IMPROVED PICK:
EXCAVATOR AND DISCHARGING ELEVATOR FOR EXCAVATING FOR. FOUNDATIONS,
SURFACING BOADS, EXCAVATING CLAY, SAND, SOIL, AND 'OTHER LIKE "SUBSTANCES,"
upon the condition (amongst others) that I, the said Robert Stone, my
executors or administrators, by an instrument in writing, under my, or
their, or one of their hands and seals, should particularly describe and
ascertain the nature of the said. Invention, and in what manner the
same was to be performed, and cause the same to be filed in the Great
Seal Patent. Office within, six calendar months next and immediately
after the date of the said Letters Patent.
NOW KNOW YE, that. I, the said Robert Stone, do hereby declare
the nature of my said Invention, and in what manner the same is to be
performed, to be particularly described and ascertained in and by the
following statement :-
:
"
A pick excavator and discharging elevator according to this Invention
consists of a circular disc or discs which are carried on a shaft mounted in
suitable bearings carried on a truck or wheeled frame.. The disc or discs.
are so mounted that they will revolve freely upon suitable power being
applied. The discs are fitted with radial slots or guides. In these slots
or guides are sliding weights or metal blocks so arranged that picks,
bills, or chisels may be screwed or otherwise attached thereto. These
weights and picks are so arranged that they fall down the slides or slots
in the disos-as-the-discs-rotate,-the-picks-projecting beyond the surface
of the discs sufficiently to operate upon the material requiring loosening.
Carried on the same truck or wheeled framework and immediately
behind the revolving discs is an elevator which, lifts the loosened
material, and discharges the same into a cart or truck immediately
behind flie pick excavator. The picks on the discs are so. arranged that
they will work at banks or on road surfaces, as may be required, also the
-

page_text: picks are so arranged that they can be removed for sharpening by
merely unscrewing or detaching the same from the weights.
In some instances the picks may be fixed to the discs and arranged to
róțate so as to tear, rip up, or draw away the material under treatment,
and deliver the same into a cart or truck behind, without the aid of the
before-mentioned elevator.
The truck carrying the pick excavator may be drawn or driven by an
engine or winch, or by horse power, and may run on rails or on the
ground, and the discs may be rotated by suitable pulleys and straps or
cog wheels, the elevator being also worked by any suitable system of
bands or cog wheels, as is well understood.
For excavating and working at banks of clay, soil, peat, coal, or other
substances, a drum may be substituted for the discs, having on its outer
surface a series of teeth or pickers. This drum is mounted on an arm
or jib, which is hinged to the back of a truck or carriage. At the front
of the truck or carriage is an upright or "standard for raising and
lowering the jib or arm with the revolving picker. The picker is driven
by a spur wheel working on a pinion and rotated by a strap and pulley
from a winch at the back of the carriage. This winch also raises and
lowers the jib or arm by means of a suitable chain connection. The jib
or arm is fitted with an endless band, upon which the revolving drum
picker delivers the material. The material is discharged at the rear end
of the carriage.
The carriage may be mounted on wheels, either plain or flanged, to
run on a rail, and the apparatus can be kept up to its work against the
surface of the bank, being operated upon by means of a block and
tackle, or by a ratchet rail and suitable pawls on the carriage, or by
other mechanical means.
In some instances it may be necessary to bore for excavations, and for
this purpose I use a tool of conical shape, having a spiral cutting edge
round its surface, or a tool with a female conical spiral cutting edge, so
arranged that it will deliver the material at the back of the tool as the
work progresses. These tools may be mounted on suitable shafting, and
work on the end of the jib or arm before mentioned.
Machines according to this Invention may be used for all purposes
where surface picking, draining, boring, or excavating is required.

page_text: The before going being the nature, object, and purposes of this my
Invention, I will now proceed to describe more in detail how the same
may be carried into effect, and for that purpose I have hereunto attached
a sheet of Drawings sufficient to enable any practical mechanic to carry
my Invention into practice.
Figure 1 is a side elevation of a machine constructed according to my
Invention for picking roads and other surfaces.
Figure 2 is a side elevation of a machine constructed according to my.
İnvention for ripping up banks.
Figure 8 is a side elevation of a machine constructed according to this
Invention for working at banks of considerable height; Figure 4 is an-
end view of drum of Figure 3.
Figures 5 and 6 are tools for boring purposes.
Referring to Figure 1, A is a truck which runs on wheels (either road-
or rail); B, rail; C, C³, are discs or a drum which carry weights D.
These weights fall out by their own weight and centrifugal force..
E are the pick points or bills, which are screwed into the weights D.
The discs or drum
may be of any suitable width, and made to revolve on
the shaft F by any suitable mechanical appliance. G is an elevator
which removes the material after it has been loosened and worked by
the picks E. The elevator G may discharge the material into a cart H
or a second truck.
The apparatus may be drawn by a stationary winch or engine, or by
horse power, the discs or drum being rotated by suitable straps or cog.
wheels. The elevator may also be worked by any suitable system of
straps or cog wheels.
Referring to Figure 2 it will be seen that the discs or drum O are
fitted with fixed picks I. These picks rip up the material and throw it
into the box K at the back of the truck.
The apparatus may be driven by any suitable mechanical means, and
kept up to its work by a block and tackle or other suitable appliance.
Referring to Figures 3 and 4, a is a carriage with two standards 6
and c. Hinged to the standard 6 is a jib or arm & fitted with a trough e.
At the end of the jib or arm & is a drum ƒ fitted with teeth or pickers h.
, pinion; spur wheel; m, V pulley; n, strap for working same;

page_text: o, endless band or belt; p, winch; r, chain for raising and lowering
jib; s and t, Figures 5 and 6, boring tools. In all cases the teeth or
pickers / cover each other.
Having now described and ascertained the nature, object, and pur-
poses of this Invention, and shown how the same may be put into
operation, I would have it understood that I do not confine myself to
any particular sizes or dimensions, or to any particular purpose for which
this machine may be used, or the particular method of driving or
actuating the same, but what I claim as the Invention secured to me.
by Letters Patent as aforesaid is,—
Firstly. The pick excavator and discharging elevator, substantially as.
herein-before described and illustrated by Figure 1 of the accompanying
Drawings.
Secondly. The pick excavator, substantially as herein-before described
and illustrated by Figure 2 of the accompanying Drawings.
Thirdly. The pick excavator and discharger, substantially as hercin-
before described and illustrated by Figures 3 and 4 of the accompanying
Drawings.
:
In witness whereof, I, the said Robert Stone, have hereunto set
my hand and seal, this Eleventh day of February, in the
year of our Lord One thousand eight hundred and seventy-
four.