Improvements in or relating to Apparatus for Turning Stone or other Materials.
Year: 1889

page_text: Date of Application, 14th Jan., 1889
Complete Specification Left, 10th Oct., 1889-Accepted, 30th Nov., 1889
PROVISIONAL SPECIFICATION.
Improvements in or relating to Apparatus for Turning Stone or
other Materials.
I, THOMAS TURNER of Keiton Stone Quarries, in the County of Rutland, Builder
and Stone Merchant, do hereby declare the nature of this invention to be as
follows:-
This invention relates to lathes or apparatus for turning and it has for its object the
improved construction and arrangement of the tool rests and apparatus for gauging
articles in process of turning, and in the centring and driving stone balusters and
other materials in which reliable centres cannot be forined.
In carrying out this invention I arrange a shaft or bar preferably immediately
above, parallel to, and at a convenient distance from the lathe centres and which may
be carried in bearings formed in or attached to vertical supports the lower ends of
which may be secured to the headstocks or other convenient part of the lathe or its
connections.
On this shaft I arrange a number of gauges which are carried on or between
sliding bosses or sleeves by means of which the gauges are adjusted and secured in
their desired positions on the shaft.
The gauges rotate freely on or between the bosses or sleeves secured on the shaft
and each one is provided with a preferably steel pointer sliding freely in the gunge
the point of which may be adjusted to any suitable distance from the centre of the
shaft or lathe and secured by means of a set screw or other convenient arrangement.
The points of the gauges are set so as to pass over the article in process of turning
at that part where they are fixed to gauge, so soon as it is reduced to the desired
diameter when they pass to the back out of the way and may be turned over the top
of the shaft and brought in front when commencing a fresh article. The points of
the gauges may be held in contact with the article in the lathe centres by springs or
they may be formed with a weight or he provided with a vessel in which weights may
be placed as required such vessel or weights being preferably placed at the front of
the gauges when in contact with the work and at a convenient distance from the
centre of the shaft.
By this arrangement when turning fancy articles such as balusters a gauge may be
arranged for each separate part of the haluster which gauges are held in contact,
with the baluster and indicate immediately when each part is reduced to the requisite
diameter.
I arrange on the tool rest two or more checks or plates which slide laterally on the
rest and which may be adjusted and secured by set screws to different parts of the
work and act as guides for the tool.
Centres may be formed for turning such articles as stone balusters by forming a
hole at each end and inserting a metal plug, or a metal plate having one or more
projections fitting into corresponding holes in the ends of the balusters centres being
formed in the plug or plate which are secured by any suitable composition to the
baluster.
I preferably drive such articles as stone balusters by means of an adjustable clamp
fitting on and bolted to the square end which engages with a pin in, or may be
secured to the driving plate of the lathe.
Dated thin 14th day of Ton18e0

page_text: COMPLETE SPECIFICATION.
Improvements in or relating to Apparatus for Turning Stone or
other Materials.
I, THOMAS TURNER of Ketton in the County of Rutland, Builder and Stone
Merchant, 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 guages for lathes or apparatus for turning, and it has for
its object the improved construction of apparatus for guaging articles in process of
turning, and in the centreing of same in which reliable centres cannot be formed.
Fig. 1. of the drawing accompanying this specification shews the front elevation of
apparatus.
Fig. 2. Sectional Elevation.
In carrying out this invention I arrange a shaft or bar as shewn at A preferably
immediately above; parallel to, and at a convenient distance from the lathe centres,
and which may be carried in bearings formed in or attached to vertical supports as
shewn at B the lower ends of which may be secured to the headstock or other
convenient part of the lathe or its connections.
On this shaft I arrange a number of guages which are carried on or between sliding
bosses or sleeves by means of which the guages are adjusted and secured in their
desired positions on the shaft.
The guages rotato freely on or between the bosses or sleeves secured on the shaft
& each one is provided with a steel pointer as shown at C sliding freely in the guage
the point of which may be adjusted to any suitable distance from the centre of the
shaft or lathe, and secured by means of a set screw or other convenient arrangement.
The points of the guagos are set so as to pass over the article in process of turning
as shewn at D, at that part where they are fixed to guage, so soon as it is reduced to
the desired diameter when they pass to the back out of the way as shewn by the
dotted lines at E and may be turned over the top of shaft as shewn by dotted lines
at F, and brought in front when commencing a frosh article.
The points of the gauges may be held in contact with the article in the lathe by
springs or they may be formed with a weight, or be provided with a vessel as shewn
at G in which weights may be placed as required such vessel or weights being placed
preferably at the front of gauges when in contact with the work and at a convenient
distance from the centre of shaft.
This arrangement allows the pointers or indicators to he set to a drawing when
required which is accomplished in the following manner.
The drawing to be copied is placed between the two centres upon which the
material to be turned revolves, and a pointer is set to each member of the drawing
(before the material to be turned is mounted) the workman then cut away the
material until each pointer falls through; which produces an exact duplicate of
drawing.
Having now particularly described &: ascertained the value of my said inven-
tion & in what manner the same is to be performed 1 declare that what I
claim is
1st. The arrangement of shaft or bar attached to vertical supports, the lower ends
of which are secured to the head stocks or other convenient part of the lathe to carry
the guages as substantially shewn & described with reference to the accompanying
drawings.
2nd. Guages working on or between sliding bosses or sleeves & having a pointer
arranged to slide freely, to be secured in any position by a set screw or other
arrangements.
Dated this 9th day of October 1889.