Dividing and Drilling Machine.
Year: 1891

page_text: being date of first Foreign Application (in 22nd Dec., 1890
Norway),
Date of Application (in United Kingdom), 22nd June, 1891
Complete Specification Left, 22nd June, 1891-Accepted, 22nd Aug., 1831
COMPLETE SPECIFICATION.
Stone Dividing and Drilling Machine.
I, PAUL KNOPH RÖIR, Manufacturer, of Satre pr. Heggedal, Norway, 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 :-
In
My invention relates to an improved machine for dividing and drilling stone
which will describe with reference to the accompanying drawing in which
Fig. 1 shows a front elevation and Fig. 2 a longitudinal section of the machine.
a framing A, capable of sliding vertically between uprights B are mounted a series
of hammers a placed side by side loose on a shaft a¹ and having tails a² acted upon
by a series of cams or eccentrics d on a shaft d' driven from any suitable motor by
pullies d, the said cams having the effect of raising the hammers a, while these are
made to descend again by the combined action of gravity and of adjustable
springs f
The hammers act upon the upper ends of plungers or rams b, sliding vertically
in cross bars of the framing and pressed upwards by helical springs e acting on
collars on the rams; to the lower ends of the plungers are attached tools or drills c
which by the blows of the hammers are made to descend and cut into or drill the
block of stone C carried by a truck running on rails beneath the drills, these being
forced upward again after each blow by the springs e. The rams and drills are
partially rotated after each stroke by pawls k', receiving a to and fro motion from
an eccentric on the driving shaft, and gearing with ratchet discs geared with
the rams b by a groove and tongue so that while the ram is capable of sliding freely
vertically through the ratchet disc, it is carried round by the latter.
The pressure of the springs fand consequently the strength of the blows of the
hammers, is regulated by a screw spindle g rotated by a hand wheel and gearing gl
and screwing through a block having an eye m through which slides the end of
the rod carrying the spring f, and which forms the abutment for the latter.
The frame A is balanced by a balance weight D and can be raised or lowered in
guides on the uprights B by suitable means such as the screws E and gearing as
shown.
When a row of holes has been drilled to the required depth, wedge plugs are
driven into the holes so as to split the stone along the row.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed I declare that what I
claim is :-
A vertically reciprocating adjustable stone dividing and drilling machine wherein
hammers actuated by cams or other lifting devices and adjustable springs are made
to impart a downward cutting motion to drills which are raised again by springs and
で

page_text: are rotated by an eccentric and ratchet motion, arranged and operating substantially
as described with reference to the drawings.
Dated thin 22nd day of Iw 1901
ABEL & IMRAY,
Agents for the Applicant.