Improved Machine for Boring Rock, Dressing and Breaking Stone, Riveting and for other like Purposes.
Year: 1898

page_text: Improved Machine for Boring Rock, Dressing and Breaking Stone,
Riveting and for other like Purposes.
I, ALEXANDER CATTANACH, Contractor, Rose Cottage, Kingussie, North Britain,
do hereby declare the nature of this invention to be as follows:
This invention relates to an automatic machine for use in rock boring, also
applicable for other purposes such as dressing and breaking stones, rivetting and
the like.
In the system at present in use whilst boring rock, the jumper is held by
a man between his knees and struck alternately with hammers or "pelters" by
the hammermen thus necessitating the employment of three men for the opera-
tion, but with my machine one man can perform the operation alone with the
same rapidity and efficiency:
In accordance with my invention I employ a frame of suitable metal or
material upon which is mounted a wheel of suitable diameter to which I connect
in any convenient manner the hammer or "pelter" which strikes the jumper.
Situated in any convenient position relatively with the seat provided for the
operator attending the "jumper" is a driving wheel having cranks similar to
those of a bicycle so that the said wheel can be freely rotated by the feet of the
attendant. This driving wheel communicates its motion to the hammer wheel
by a rod so connected that whilst the driving wheel makes a complete revolu-
tion the hammer wheel is only partially rotated thus causing the hammer to be
raised and lowered alternately to strike the "jumper."
The bearing of this hammer wheel is provided with a screwed portion working
in the frame so that the wheel can be lowered to keep the hammer in correct
position relatively with the jumper as it descends into the rock, and to enable
this to be easily effected the driving rod is made removable and adjustable.
To ensure the jumper keeping its position below the hammer I secure upon the
frame a cross piece provided with a number of holes to enable the jumper to
be advanced or receded from the hammer wheel so that the hammer which is
adjustably attached to the said wheel can be made to vary its stroke as desired.
Springs may be secured above and below the hammer shaft to lessen its shock
and if desired a suitable guard may be employed to prevent accidents.
This machine can be conveniently employed for dressing stone by substituting
a pick or dressing tool for the hammer head; and by modifying its construction
may be employed for breaking stones such as are used for macadamizing roads
or for rivetting, smith work or for any other purpose in which quickly repeated
blows are required.
When boring rock the jumper has to be removed from time to time so that
the ground rock which collects and is formed int paste by the water used as
the medium for keeping the jumper cool, may removed. This is found to
occupy much time and in accordance with my invention I employ a cleaner
consisting of a rod or wire having a screwed portion and guard at the bottom
n

page_text: thereof which is inserted into the hole and by rotating same is caused to collect
this matter when it can be readily withdrawn, thus effecting a considerable
saving of time and labour.
Dated this 11th day of March 1900
Improved Machine for Boring Rock, Dressing and Breaking Stone,
Rivetting and for other like Purposes.
I, ALEXANDER CATTANACH, Contractor, Rose Cottage, Kingussie, North Britain,
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 relates to an improved automatic machine for use in rock
boring, also applicable for other purposes, such as dressing and breaking stones,
rivetting and the like.
66
In the system at present in use whilst boring rock, the "jumper" is held
by a man between his knees and struck alternately with hammers or pelters
by the hammermen' thus necessitating the employment of three men for the
operation, but with my machine one man can perform the operation alone with
the same rapidity and efficiency.
In accordance with my invention I attach the "pelter" to an arm which is
alternately raised and lowered by suitable means, actuated by a foot treadle or
crank gear.
But in order that my said invention may be more readily understood and easily
carried into effect I will proceed to describe the same with reference to the
accompanying drawings in which
Fig. 1 is an elevation.
Fig. 2 a plan and
Fig. 3a rear view of my improved machine.
Fig. is an elevation of same shewing the hammer or "pelter" in its raised
or elevated position.
Referring to the said drawings I employ a frame A of any suitable form pro-
vided with bearings 6 which receive the pivots c, e¹ of a frame C. This frame C
carries the arm in which the shaft of the hammer is firmly secured by bolts E
or otherwise. In order to enable the frame C to be tilted or rocked to raise
the hammer into the position shewn in Fig. 2 I extend the pivot and key
thereon a crank F connected by a rod f to the crank of the driving gear which
may be similar to that of a cycle, or of other convenient form. A seat G is
situated upon the frame A for the person attending and actuating the machine.
The "jumper" H passes through a guide h formed in the framing so as to
ensure it keeping a vertical position below the hammer and in order that, as
the jumper descends into the rock, it may assume its correct position relatively
with the "jumper," the arm D) carrying the hammer or "pelter" is caused to
slide within the frame C, the arrangement being such that by means of a screw K
operated by a hand wheel the arm can be gradually lowered as desired. A
certain amount of clearance is preferably allowed between the unthreaded portion
of the screw K, at the points where it passes through the frame C, and a spiral
spring is interposed between the hand wheel and the top of the frame whereby

page_text: the shock upon the machine, caused by the hammer striking the jumper, is
lessened or mitigated. A spring L is also secured to the lower portion of the
frame C for the same purpose and also for increasing the power of the hammer
during its descending stroke.
Also if desired the bush or bearing at either end of the connecting rod f may
be acted upon by spiral or other springs to lessen the shock upon the framing
of the machine; and a suitable guard may be employed to prevent accidents.
The machine may also be employed for face boring by altering the position
of the hammer and constructing the frame to suit; and in place of lowering
the hammer by hand as shewn this may be performed automatically by a suitable
ratchet wheel provided upon the pivoting frame at the lower end thereof arranged
to engage with a pawl upon the framing of the machine, by which the ratchet
wheel is rotated through one tooth as the hammer follows the jumper.
The foregoing serves as an example of one method of carrying out my inven-
tion but I desire it to be understood that I do not limit myself to the precise
details therein described as it is obvious that the same may be varied without
departing from the scope of my invention.
The machine can be conveniently employed for dressing stone by substituting
a pick or dressing tool for the hammer head; and by mounting the shaft or
handle in the pivotting frame so that it acts away from instead of towards the
operator, may be employed for breaking stones such as are used for macadamis-
ing roads or for rivetting work, or for any other purpose in which quickly
repeated blows are required.
In this case the driving gear and operator's seat may be brought considerably
closer to that part of the main framing supporting the pivotting frame, so that
the connecting rod is in, or nearly in, a vertical position, thereby enabling the
dimensions of the framing to be lessened.
Having now particularly described and ascertained the nature of my inven-
tion, and in what manner the same is to be performed, I declare that what I
claim is :-
1. The improved machine for boring rock, dressing and breaking stone,
rivetting and for the like purposes, constructed and operating substantially in the
manner as hereinbefore described and shewn in the accompanying drawings.
2. In a machine for boring rock, dressing and breaking stone and for other
like purposes, the hammer or dressing tool mounted in a pivoting frame having
a rocking motion imparted to it by a crank and connecting rod actuated by the
feet of the operator through a treadle, or crank gear, substantially in the manner
as herein before described and shewn in the accompanying drawings.
3. The method of mounting the hammer-carrying arm in the pivotting frame;
and the means for controlling its movement therein; whereby the hammer can
be lowered to assume its correct position relatively with the "jumper" during
the latter's descent into the rock substantially as hereinbefore described and
shewn in the accompanying drawings.
Dth 10th
Decombon 1000
JOHNSONS,
Petitioner's Agents, 115, St. Vincent Street, Glasgow.