Year: 1886

page_text: Date of Application, 30th Jan., 1886.
Complete Left, 26th Oct., 1886.
Complete Accepted, 28th Jan., 1887.
and in Apparatus дететог.
We WILFRID SWANWICK BOULT, Civil Engineer, and JOHN CHARLES WILLIAM
STANLEY, Secretary both of the West Drayton Mineral and Chemical Company
Limited, Hayes, in the County of Middlesex, do hereby declare the nature of this
invention to be as follows:-
This machine consists of two grinding or polishing discs or rings facing each other
and running in opposite directions, and apparatus for feeding in the tubes or rods
between them with a forward and rotating or rocking motion the resulting motion
being preferably a steady helical feed.
The grinding discs now made are by preference formed so as to screw into cast iron
chucks which are attached to the ends of their respective shafts (to which longitudinal
movement may be imparted) and driven independently by belts from a
countershaft or otherwise.
common
Springs or equivalent with adjusting screws are arranged to bear on the outer ends
of the disc shafts with any required pressure.
The tube or rod to be polished is fed in between the discs preferably by means of
an endless cord or band lapped round it and driven from a cross shaft by worm
gearing from one of the disc shafts. The end passes over a loaded tightening pulley
and is so arranged as to have a slight downward pull on the tube.
A second and similar cord is provided behind the wheels so as to draw the tubes
completely through.
We do not however bind ourselves to this form of feed mechanism.
To assist the action of the cords the tubes lie on a series of pairs of small rollers,
preferably covered with India-rubber, placed with their axes at a slight angle with
that of the tube so that as the latter is rotated by the cord it may have a tendency to
move forward. By running the grinding discs in opposite directions however all
tendencies on their part to move the tube are mutually counteracted so that very little
power is needed in the feeding.
As many pairs of the discs as desired may be used in one machine; for instance
one or two pairs of grinding dises, and one or two buffing.

page_text: To keep the tube cool water may be used during the grinding this leaves the tube
covered with "swaff" which may be removed by water directed upon the tube as it
leaves the grinding discs.
As oil is used in the buffing, the tube must be dried, and where the tube is to be
treated continuously a current of hot air may be caused to play upon it, or it will pass
through a hot chamber, so that it reaches the buffing discs in a suitably dry state, to
be advantageously treated with the oil and rottenstone &c. To avoid difficulties in
inserting a fresh length of tube we prefer to dowel the fresh one on to the one being
treated so that no break may occur and the machine may work continuously.
It sometimes happens that weak tubes and more especially such as are formed of
strips of metal bent round with butt edges not united are unable to withstand the
pressure of the two hard discs and get worked out of shape. In such cases the tube
is pressed against the face of the revolving grinding or polishing discs by any suitable
form of compression rollers and either the discs or the rollers or both are adjustable
and pressed up by spring or weight if desired.
The buffing or polishing apparatus consists one or more ordinary polishing holes,
boxed in so as to be self supplying with the polishing powders. One or more buffing
pads in a rotating frame work in a box supplied with the polishing powder. The pads
may be pressed against the tube by any suitable means.
Paddles or equivalent may if necessary be attached to the buffing apparatus so as to
assist in throwing about the powders in the boxes.
Endless bands may be used for buffing either in combination with the other buff's
or independently of them; these should be wholly or partially boxed in and arranged
so that the band is continually drawn through polishing powder some of which it
takes up as it passes.
As many of these systems as required in a single machine or in consecutive machines
may be arranged to act on the scoured tube as soon as possible after it leaves the
grinding disc or discs, so that one part of a tube is being polished at the same moment
that another part is being ground or scoured.
To facilitate this continuous movement it is desirable to connect each succeeding
length of pipe with its immediate predecessor so that a continuous length of tube may
be presented to the grinding or buffing apparatus. The connection of the tubes may
be effected by means of dowels preferably provided with springs or expansible
rubbers.

page_text: Improvements in Grinding or Polishing Rods, Tubes, and the like,
and in Apparatus therefor.
We WILFRID SWANWICK BOULT Civil Engineer, and JOHN CHARLES WILLIAM
STANLEY Secretary, both of the West Drayton Mineral and Chemical Company,
Limited, Hayes, in the County of Middlesex, do hereby declare the nature of our
invention and in what manner the same is to be performed, to be particularly described
and ascertained in and by the following statement:-
This machine consists of two grinding or polishing discs or rings facing each
other and running in opposite directions, and apparatus for feeding in the tubes or
rods between them with a forward and rotating or rocking motion the resulting motion
being preferably a steady helical feed.
The grinding discs are by preference formed so as to screw or clamp into cast iron
chucks which are attached to the ends of their respective shafts (which are in the same
axial line and to which longitudinal movement may be imparted) and driven indepen-
dently by belts from a common counter-shaft or otherwise.
Springs or equivalent with adjusting screws are arranged to bear on the outer ends
of the disc shafts with any required pressure.
By this means the disc is automatically pressed up to its work with any desired
constant pressure irrespective of the wear of the disc or size of the tube or rod
operated upon.
The tube or rod to be polished is fed in between the discs preferably by means of an
endless cord or band lapped round it and driven independently of the discs. The band
passes over a loaded tightening pulley and is so arranged as to have a slight downward
pull on the tube.
A second and similar cord is provided behind the wheels so as to draw the tubes
completely through; as many of these cords or bands may be used as may be
necessary.
To assist the action of the cords the tubes lie on a series of pairs of small rollers
preferably covered with india-rubber placed with their axes at a slight angle with that
of the tube so that as the latter is rotated by the cord it may have a tendency to move
forward. By running the grinding discs in opposite directions however all tendencies
on their part to move the tube are immediately counteracted so that very little power
is needed in the feeding.
As many pairs of the discs as desired may be used in one machine; for instance one
or two pairs of grinding discs and one or two buffing.
By this arrangement the tube or rod passes into the machine in the rough state
and emerges ground and polished and ready for use the two operations going on
simultaneously upon different parts of it.
To keep the tube cool water may be used during the grinding this leaves the tube
covered with "swoff" which may be removed by water directed upon the tube as it
leaves the grinding discs.

page_text: As oil is used in the buffing the tube must be dried and where the tube is to be
treated continuously a current of hot air may be caused to play upon it or it may pass
through a hot chamber, so that it reaches the buffing discs in a suitably dry state to
be advantageously treated with the oil and rotten stone etcetera. To avoid difficulties
in inserting a fresh length of tube we prefer to dowel the fresh one on to the one being
treated so that no break may occur and the machine may work continuously.
It sometimes happens that weak tubes and more especially such as are formed of
strips of metal bent round, with butt edges not united are unable to withstand the
pressure of the two hard discs and get worked out of shape. In such cases the tube
is pressed against the face of the revolving grinding or polishing discs by any suitable
form of compression rollers instead of passing between pairs of discs and either the
discs or the rollers or both are adjustable and pressed up by spring or weight if
desired.
The buffing or polishing apparatus consists of one or more ordinary polishing bobs
boxed in so as to be self supplying with the polishing powders. Or one or more
buffing pads in a rotating frame working in a box supplied with the polishing powder
may be used. The pads may be pressed against the tube by any suitable means.
Paddles or equivalent may if necessary be attached to the buffing apparatus so as to
assist in throwing about the powders in the boxes.
Endless bands may be used for buffing either in combination with the other buffs
or independently of them; these should be wholly or partially boxed in and arranged
so that the band is continually drawn through polishing powder some of which it takes
up as it passes.
+
As many of these systems as required in a single machine or in consecutive machines
may be arranged to act on the scoured tube as soon as possible after it leaves the
grinding disc or discs so that one part of a tubo is being polished at the same moment
that another part is being ground or scoured.
To facilitate this continuous movement it is desirable to connect each succeeding
length of pipe with its immediate predecessor so that a continuous length of tube may
be presented to the grinding or buffing apparatus. The connection of the tubes
may be effected by means of dowels preferably provided with springs or expansible
rubbers.
1

page_text: matically press the grinding disc up to its work with any desired constant pressure
whatever the wear of the disc or size of the tube operated upon substantially as
specified.
2. In a grinding or polishing machine the use of endless bands cords or equivalent
lapped round the tube or rod to impart the helical feed motion.
3. The combination with a grinding or polishing machine of means for drying
the tube or rod operated upon whereby after having been subjected to treatment with
water it is immediately ready for treatment with oil substantially as specified.
4. In a grinding or polishing machine the use of dowels for connecting the lengths
of tube together whilst passing through the machine for the purpose specified.
5. In a grinding or polishing machine the method of passing the tube or rod with
helical motion between the grinding disc or ring and the abutment roller or rollers
substantially as specified.
6. In a grinding or polishing machine the method of fixing the abutment rollers at
such an angle that when the tube is fed in with helical motion and presses against
them they are caused to rotate on their axes and without appreciable slip to trace on
the tube a helix of equal pitch to that of the feed motion.
7. In a grinding and polishing machine the combination in one machine of grinding
discs and polishing discs or bands for the continuous treatment of the tube or rod.
8. In a polishing machine the combination with the polishing bands of abutment
rollers set at the angle specified in the sixth claiming clause hereof for the purpose of
resisting the pull of the said polishing bands.
9. In a polishing machine the method of keeping the various qualities of discs or
powders separate by boxing in and causing the tube or rod to pass through pads
stuffing boxes or equivalent substantially as specified.
10. In a grinding or polishing machine the employment of two grinding or polishing
discs facing each other and adapted to receive the tube or rod between them and
operate simultaneously upon opposite sides of it substantially as specified.
11. In a grinding or polishing machine the application of a jet of water to wash off
swoff from the tube after it has passed the last grinding disc.
WILFRID S. BOULT.
JOHN CHARLES WILLIAM STANLEY.