Year: 1888

page_text: I JAMES MCGHIE of Coats Tube Works Coatbridge in the County of Lanark Tube
Manufacturer do hereby declare the nature of this invention to be as follows:-
This invention relates to apparatus used in the manufacture of metal tubes and it has
for its object improvements in the mechanism whereby the tubes are straightened and
ground polished or finished. The said improved apparatus consists of a framing
carrying two or more rotating skew rolls between which the tubes are caused to pass
the action of the rolls rotating and straightening the tubes. In conjunction with these
rolls there is provided an emery wheel which is carried in one end of a lever centred
on a vertical bracket or angle iron and having connected to its other end one extremity
of a spiral or other spring the function of which is to maintain the circumference of
the emery wheel in frictional contact with the tube being operated on and to cause
the said wheel to grind or polish the surface of the tube as it is drawn through the
apparatus by the rotative action of the skew rolls. The emery wheel is rotated by an
endless belt or band passed round a pulley keyed on a shaft to which rotation is
given in any convenient manner. From the said pulley the belt or band passes over
two pulleys centred on arms projecting from the lever carrying the emery wheel the
band being thereafter conducted round a pulley on the hub or boss of the emery
wheel. Whilst the spiral or other spring permits of adjustment of the emery wheel
to suit different diameters of tubes and maintains the wheel always in frictional contact
with the surface of the tube irrespective of the wear of the wheel the intermediate
pulleys ensure that the belt is always kept stented and in proper driving position.
The bearings of one or both of the skew rollers are adjustable to adapt the rollers
for taking in different diameters of tubes and when two skew rollers only are used
their peripheries are grooved or recessed to receive the emery wheel.
Dated this Theantic first day of February 1888.
CRUIKSHANK & FAIRWEATHER,
62, Saint Vincent Street, Glasgow,
Agents.

page_text: I, JAMES MCGHIE of Coats Tube Works Coatbridge, in the County of Lanark,
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 used in the manufacture of metal tubes and it
has for its object improvements in the mechanism whereby the tubes are straightened
and ground, polished or finished.
As seen in side elevation at figure 1 and in end elevation at figure 2 of the annexed
drawings the said improved apparatus consists of a framing A carrying two rotating
skew rolls B, between which the tubes C are caused to pass the action of the rolls B
rotating and straightening the tubes. In conjunction with these rolls there is provided
an emery wheel Ď which is carried in the lower end of a lever E centred at F on
vertical brackets or angle irons G these being tied to the framing A by struts or tie
bars H. The lever has connected to it an extremity of a spiral or other spring or
springs I whose opposite end or ends is or are attached to one or both of the
brackets G and the function of which is to maintain the circumference of the emery
wheel D in frictional contact with the tube C being operated on and to cause the said
wheel D to grind or polish the surface of the tube as it is rotated and drawn through
the apparatus by the rotative action of the skew rolls B. The emery wheel D is
rotated by an endless belt or band J passed round a pulley K keyed on a shaft L to
which rotation is given in any convenient manner. From the said pulley the belt or
band J passes over two pulleys M, N, centred on the lever E the band being thereafter
conducted round a pulley Ŏ on the hub or boss of the emery wheel D. Whilst
the spiral or other spring or springs maintains or maintain the wheel D always in
frictional contact with the surface of the tube irrespective of its diameter and of the
wear of the wheel the intermediate pulley N which is supported in brackets or arms P
secured to the lever E ensures that the belt is always kept stented and in proper
driving position, the bearings of the said pulley being carried in blocks through
which screws R pass the said screws having bevil wheels on their lower ends which
gear with similar wheels on a cross shaft S the latter being operated by the handing
wheel T to stent the belt.
The bearings of one or both.of the skew rollers B are adjustable being carried in
blocks U which are moved inwards or outwards by screws V to adapt the rollers for
taking in different diameters of tubes and the peripheries of the said rollers are as
seen at figure 2 grooved or recessed to receive the emery wheels D which together
with its driving pulley O is or may be provided with a cover W connected to the
lever E. Besides being connected to the brackets or frames G the lever E is hung
from a stationary beam by a chain X connected to its lower end the said chain having

page_text: a rigging screw Y to adjust the depression or elevation of the emery wheel D
according to the diameter of tube being ground and to the chain X there is connected
an end of another chain Z whose other end is attached to a lever and by operating
which the emery wheel is raised when or about the end of the tube is reached the
tube ends being generally more or less ragged and tending to unduly abrade or
scratch the periphery of the wheel.
Having now particularly described and ascertained the nature of my said invention
and in what manner the same is to be performed I declare that what I claim is :-
1. The general arrangement and combination of parts constituting the improved
tube straightening and polishing or grinding apparatus substantially as herein before
described with reference to the drawings annexed.
2. In apparatus of the class set forth in combination with the straightening rolls a
lever carrying a grinding or polishing wheel and mechanism to operate and adjust
said wheel substantially as described with reference to the accompanying drawings.
Dated this Twentieth day of November 1888.
CRUIKSHANK & FAIRWEATHER,
62, Saint Vincent Street, Glasgow,
Agents.
CRUIKSHANK & FAIRWEATHER,
62, Saint Vincent Street, Glasgow,
Agents.