Year: 1897

page_text: Date of Application, 6th May, 1897-Accepted, 12th June, 1897
I. GEORGE ANDERSON, of the Firm of George Anderson and Company,
Engineers and Founders, Arbroath, in the County of Forfar, Scotland, do
hereby declare the nature of this invention and in what manner the same is to he
performed, to be particularly described and ascertained in and by the following
statement:
My invention relates to improvements in stone dressing machinery of the type
in which the stone is placed and properly secured upon a table which is made to
traverse backward and forward beneath a cross-slide carrying cutting tools, that is
to say the machine is somewhat similar to an iron planing machine. Such cross-
slide and cutting tools are, or may be made to turn over at the end of the stroke
of the table, in order that work may be done on the stone during both forward and
backward strokes; and it is to improve the method of actuating the turning over
of the cross-slide and tools, the fixing of the tools in the cross-slide, and the
method of actuating the belt shifter that are the main objects of my invention.
And in order that my said invention and the manner of performning or carrying
the same into effect or practice may be properly understood, I have hereunto
appended two explanatory sheets of drawings in which the same reference numerals.
are used to indicate corresponding parts in all the figures where shown, that is
to say:
Figure 1. (Sheet 1) is an end elevation looking in the direction of the arrow Z.
(Figure 4) of the machine.
Figure 2. (Sheet 1) is a side elevation, looking in the direction of the arrow Y..
(Figure 1), of the cross-slide showing it midway when in the act of turning over
from the one side to the other.
Figure 3. (Sheet 1) is a plan of such cross-slide.
Figure 4. (Sheet 2) is a plan of the machine with the table removed showing
the belt shifting gear.
Figure 5. (Sheet 2) is an end view looking in the direction of the arrow Z.
(Figure 4) showing the belt shifting gear.
In carrying out my invention, and in reference to the method of actuating the
turning over of the cross-slide and tools; I pivot such slide at each extremity 10,
the portion which carries the tools being above and away from the axis of the
pivots, and the lever 11. by which the slide is turned over being similarly situated
opposite. This slide is made in the manner shown with the faces off the centre line
of the pivots, in order that the plane in which the points of the tools lie may pass
through the axis of such pivots. The lever 11. moves in a vertical plane and the
lever 12. which actuates it in a horizontal plane. The extremity of the lever 11.
which vibrates vertically is provided with a slot in which a bush 13. works, such
bush being free to rotate as much as may be required about its lever, its exterio
being preferably of the section shown in the drawings. This bush bears again.
hardened faces 14. on the inside of the slot in the lever 11. The action of the
combination is such that the horizontal vibrations of the one lever are communicated
freely to the other, that is to say it acts somewhat in the manner of a universal
joint.
The tools 15. are attached to the slide 16. by means of screwed bolts 17, the
cover 18. through which such bolts act being securely fastened by means of screws,

page_text: bolts, or rivets 19. to such slide 16. By using a slide of this type the space for
receiving the tools can readily be planed and the tools more securely and more
accurately held in position than hitherto.
In reference to the method of actuating the belt shifter, I employ two broad
belt pulleys 20, and place a fixed belt pulley 21. between them; actuating these
by crossed and open belts in the usual way. The belt forks 22. are on a slide
rod 23. which is controlled by a bell crank 24. pivoted at or about the centre
of the machine and- actuated by two adjustable striking plates 25. fixed to the
table. Such striking plates 25. by means of the fingers 26. engage with a
removeable roller 27. on the lever 28, and thus make such lever to vibrate and
with it the shaft 29. and the lever 12. On removing the roller 27. the lever 28.
ceases to vibrate and with it the cross-slide which carries the tools 15. A hand
lever 30. is also provided, such hand lever being able to control the belts and
stop the machine when the striking plates 25. are not in touch with the lever 24.
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 :-
(1.) In stone dressing machinery, the combination and arrangement of parts for
tilting the cross-slide, substantially as hereinbefore described with reference to
Figures 1. 2. 3. 4. and 5. of the accompanying drawings.
(2.) In stone dresing machinery, the combination and arrangement of parts for
securing the tools in the slide, substantially as hereinbefore described with
reference to Figures 1. 2. and 3. of the accompanying drawings.
(3.) In stone dressing machinery, the combination and arrangement of parts for
shifting the belts, substantially as herein before described with reference to
Figures 4. and 5. of the accompanying drawings.
Dated this 1st day of May 1897.
GEO. C. DOUGLAS & Co.,
41 Reform Street, Dundee, Agents for Applicant.