IMPROVEMENTS IN RE-FLUTING WOOD PRESSING ROLLERS FOR SPINNING FRAMES
Year: 1877

page_text: LETTERS PATENT to David Cochrane, of Whiteabbey, in the County of Antrim,
Ireland, for the Invention of "IMPROVEMENTS IN RE-FLUTING WOOD PRESSING
ROLLERS FOR SPINNING FRAMES."
Sealed the 15th September 1877, and dated the 22nd March 1877.
PROVISIONAL SPECIFICATION left by the said David Cochrane at the Office
of the Commissioners of Patents on the 22nd March 1877.
DAVID COCHRANE, of Whiteabbey, in the County of Antrim, Ireland. "IMPROVE-
MENTS IN RE-FLUTING WOOD PRESSING ROLLERS FOR SPINNING FRAMES."
This Invention has for its object great saving and economy in the use of the
ordinary hard-wood fluted pressing rollers of flax spinning machines, and consists
substantially or generally in a new or improved manner and means of re-turning
and re-fluting them when the flutes become worn or blunt, which improvements
now enable them to be renewed three times for every two times as heretofore prac-
tised, that is, twenty-one times in all as compared with fourteen times, before the
flutes get reduced to the maximum coarseness or minimum number (as, say, about fifty
flutes to the inch), at which it is found these rollers or bosses have to be taken off
their splindles and replaced by new ones; and which improvements not only enable
the rollers to last much longer, but also to be in a better working condition
throughout the whole time they are in use.
And the particular nature and novelty of the Invention or improvements consist
merely in reducing the rollers at each re-turning or re-fluting sufficiently to give
only a ratio of only two flutes less to the inch of circumference instead of a
difference of three, as heretofore practised, that is to say, the hard-wood bosses or
rollers are first put on their spindles, from three to four inches in diameter as usual,
made of boxwood, thorn, holly, laurel, or other such hard pure-grained wood, and
commenced with, say, ninety-one flutes to the inch as compared with ninety as

page_text: heretofore, making the dividing indexes or notched wheels of the fluting machine to
suit the ratios or numbers of flutes, and the gauges for the turning down of the
rollers to the diameters to correspond therewith, there being thus now required
twenty-one of each of these as against fourteen as heretofore usod, which will be
understood from the following table of ratios of old and new flutes to the inch :-
.
From these tables of ratios it will be seen that the new table is made to coincide
in seven of the old ratios, namely, on the 3rd, 6th, 9th, 12th, 15th, 18th, and 21st
flutings or dressings, thus utilizing and making the old indexes and gauges suitable
for these several dressings or flutings, which is an additional improvement and
advantage in my new system of re-turning and fluting these pressing rollers of flax
spinning machines, although I do not desire to claim this, as the indexes and gauges
for these ratios of flutes have been used heretofore in the fluting machines, which
flute the rollers substantially as heretofore practised, except as regards the addition
of the new index wheels to the machine for giving the new ratios of flutings, all as
herein-before described.
SPECIFICATION in pursuance of the conditions of the Letters Patent filed by the
said David Cochrane in the Great Seal Patent Office on the 19th September
1877.
DAVID COCHRANE, of Whiteabbey, in the County of Antrim, Ireland. "IMPROVE-
MENTS IN RE-FLUTING WOOD PRESSING ROLLERS FOR SPINNING FRAMES."
My said Invention has for its object great saving and economy in the use of the
ordinary hard-wood fluted pressing and drawing rollers of flax spinning machines,
and consists substantially or generally in a new or improved manner and means of
re-turning and re-fluting them when the flutes become worn or blunt, which improve-
ments now enable them to be re-fluted or renewed three times for every two times

page_text: as heretofore practised, that is, twenty-one times in all as compared with fourteen
times, before the rollers are reduced in size to the minimum number of flutes at
which it is found that these rollers or bosses A, A, have to be taken off their
spindles B and replaced by new ones; and which improvements not only enable the
rollers A to be re-fluted more frequently, but to last much longer and be maintained
in a better working condition throughout the whole time they are in use.
And in order that the nature and mode of performing my said Invention may be
properly understood, I shall now proceed to describe the several- Figures on the
accompanying Sheet of Drawings, which I have hereunto appended for that pur-
pose, the same reference letters indicating the same parts in the several Figures
where shown.
Figures 1 and 2 are side and end elevations respectively of a pair of boxwood flax
drawing and pressing rollers or bosses A fixed on their spindle B by the end screw
nuts B, all as usual, but as fluted with sixty-three teeth in the diameter or size of
the gauge C, shown in side and end views, Figure 3.
Figures 4 and 5 are a side and edge view of the index or dividing wheel D, with
sixty-three teeth d for fixing on the spindle of the fluting machine, which turns
with the spindle B, for setting and fluting its rollers A with sixty-three flutes.
And Figures 6 and 7 are respectively a side and edge view of one of the scrolls E,
made in accordance with this Invention, for supporting the cutter frame over the
rollers A, A, while fluting them from first to last, namely, twenty-two times; first,
with ninety-five flutes; again, with ninety-three and ninety-one flutes respectively,
each time they have to be re-turned and fluted down to fifty-three flutes, reducing
by two flutes each time; after which they have to be taken off and replaced with
new bosses or rollers A, A, to be fluted as the former.
The pins c, divided round the scroll E at equal distances, receive and steady the
ends of the frame of the cutter or fluter, and as. the scrolls E are fitted in the
same line or axis as the rollers A, A, being re-fluted, and contfact or lower at
the regular ratio at each pin c or division to suit the diameter of the rollers A, A, to
be fluted with the number of flutes marked on the side of the scroll E at that pin, it
follows that the fluting cutter must, as traversed at each tooth d of the index D,
flute the roller correctly to the number of teeth required; and the particular gauge C,
suited to the size of the roller and the number of flutes which it will contain, pre-
vents error by trial, the pin marked 63 at the top showing where the cutter or
fluting frame is placed to flute the roller A, A, shown in Figures 1 and 2.
The scroll E, shown in Figures 6 and 7, is of an improved construction, rising in
a true scroll or regular curve with retaining pins e, and not in steps as they have
been heretofore.
Referring to these Figures, the particular nature, novelty, and mode of performing
my said Invention or improvements consist in reducing the rollers A, A, Figures Ĭ
and 2, at each re-turning and re-fluting only sufficiently to give a ratio of two flutes
less in the circumference, instead of a difference of three as heretofore practised, and
in making the scroll E, c, Figures 6 and 7, to reduce at the same ratio, that the
fluting cutter may only reduce and flute the rollers A, A, accordingly as described,
that to say, the hard-wood bosses or rollers A, A, are first put on their spindles B
at from three to four inches in diameter as usual, made of boxwood, thorn, holly,.
laurel, or other such hard pure-grained wood, and turned and cut with, say,
ninety-five flutes, as compared with ninety as heretofore, to begin with, and reducing
by two flutes cach renewal to, say, 53 flutes, and making the respective dividing
indexes or notched wheels D, d, of the fluting machine to suit the corresponding
ratios or numbers of flutes, and also the gauges C, Figure 3, to the sizes or diameters
the rollers are to be turned down to correspond therewith respectively, as indi-
cated by the Figures on the pinned scroll E, e. Thus there will now be required
twenty-two of each of these gauges C and indexes D, d, against fourteen as here-
tofore used, all as will be understood from the following table of old and new ratios
of the number of flutes to be cut on the rollers A, A, at each re-fluting :-
"

page_text: as herein described in reference to and shown in the accompanying Drawings, or any
mere modification thereof.
In witness whereof, I, the said David Cochrane, have hereunto set my hand
and seal, this Fourteenth day of September in the year of our Lord One
thousand eight hundred and seventy-seven.
DAVID COCHRANE. (L.S.)