Improvements in Apparatus for Grinding or Polishing Tubes.
Year: 1894

page_text: Date of Application. 23rd June, 1894
Complete Specification Left, 23rd Mar., 1895-Accepted, 27th Apr., 1895
PROVISIONAL SPECIFICATION.
Improvements in Apparatus for Grinding or Polishing Tubes.
I, JAMES MCGIE, of 33 Croft Avenue, Sunderland, in the County of Durham,
Tube Manufacturer, do hereby declare the nature of this invention to be as
follows:-
This invention relates to apparatus for grinding or polishing tubes of the type in
which the surface of the tubes is subjected to the grinding or polishing action of a
rotating emery or other grinding wheel whilst the tube itself is carried through
skewed straightening rolls which impart to it both endwise and rotary motion; and
the invention has for its object to simplify and improve the construction or
arrangement and operation of such apparatus by carrying and driving the grinding
wheel or wheels so that it or they may be adjusted to bear hard upon the surface
of the tube and thus ensure the complete removal of fins or burrs upon its surface.
The improved grinding or polishing apparatus comprises a framing carrying the
usual set of skewed straightening and feeding rolls which are arranged in two or
more pairs with an intervening space or spaces between the ends of the rolls in
which the emery or other grinding wheel or wheels is or are free to act on the
exposed part of the tube carried and rotated by the skewed rolls. The grinding
wheel or wheels is or are carried by a shaft in journal bearings fitted to slide in
housings or standards on each side extending over the skew rolls and carrying
screws which are operated by overhead bevel or other gearing and a hand wheel to
The
raise or lower the grinding wheel to suit the diameter of tube being acted on.
grinding wheel shaft is driven from a belt pulley or other gear or by a motive
power engine on either or both sides the shaft being flexible or a flexible connection
being made between the grinding wheel shaft and the driving shaft or shafts in
order to permit of the adjustment of the grinding wheel relatively to the tube
acted on by it.
Dated this 22nd day of June 1894.
CRUIKSHANK & FAIRWEATHER,
62, St. Vincent Street, Glasgow, Agents.
COMPLETE SPECIFICATION.
Improvements in Apparatus for Grinding or Polishing Tubes.
I, JAMES MCGHIE, of 33 Croft Avenue, Sunderland, in the County of Durham,
Tube Manufacturer, 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 apparatus for grinding or polishing tubes of the type in
which the surface of the tubes is subjected to the grinding or polishing action of a
rotating emery or other grinding wheel whilst the tube itself is carried through
skewed straightening rolls which impart to it both endwise and rotary motion;
and the invention has for its object to simplify and improve the construction or
arrangement and operation of such apparatus by carrying and driving the

page_text: grinding wheel or wheels so that it or they may be adjusted to bear hard upon
the surface of the tube and thus ensure the complete removal of fins or burrs
upon its surface.
h
As illustrated by the figure of the accompanying drawing the improved grinding
or polishing apparatus comprises a framing A carrying the usuni set of skewed
straightening and feeding rolls B which are arranged in two or more pairs with
an intervening space or spaces hetween the ends of the rolls in which the emery
or other grinding wheel or wheels C is or are free to act on the exposed part of
the tube carried and rotated by the skewed rolls B. The grinding wheel or
wheels C is or are carried by a shaft in journal bearings D fitted to slide in
housings or standards E on each side extending over the skew rolls B and carrying
screws which are operated by overhead bevel or other gearing and a hand
wheel to raise or lower the grinding wheel C to suit the diameter of tube being
acted on.
The grinding wheel shafte is driven from a belt pulley For other gear
dr by a motive power engine on either or both sides, the shaft being flexible or a
lexible connection being made between the grinding wheel shaft and the
driving shaft or shafts in order to permit of the adjustment of the grinding
wheel C relatively to the tube acted on by it.
The machine is obviously suited for grinding or polishing iron or steel bars to be
used as shafting.
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. Apparatus for grinding or polishing tubes the several parts of which are
arranged and combined to operate substantially as described.
2. In apparatus for grinding or polishing tubes in which the tube is carried
between skewed straightening rolls and acted on by a rotating grinding wheel or
wheels the provision of a flexible shaft or flexible connection between the driving
shaft and the grinding wheel shaft to permit of adjustment of the grinding wheel
or wheels to suit the diameter of the tube acted on substantially as described.
Dated this 22nd day of March 1896.
WALLACE FAIRWEATHER,
Chartered Patent Agent,
62, St. Vincent Street, Glasgow, Agent for the Applicant.