IMPROVE- MENTS IN APPARATUS' FOR REGULATING OR ADJUSTING THE POSITION OF ENDLESS. OFESS TRAVELLING WEBS OR BANDS EMPLOYED IN VARIOUS KINDS OF MACHINERY
Year: 1864

page_text: LETTERS PATENT to Charles Anderson, of Fettykil Leslie, in the County.
of Fife; North Britain, Manufacturer, for the Invention of "IMPROVE-
MENTS IN APPARATUS' FOR REGULATING OR ADJUSTING THE POSITION OF ENDLESS.
Sealed the 16th August 1864, and dated the 14th March 1864.
PROVISIONAL SPECIFICATION left by the said Charles Anderson at the
Office of the Commissioners of Patents, with his Petition, on the
14th March 1864.
I, CHARLES ANDERSON, of Fettykil Leslie, in the County of Fife, North
Britain, Manufacturer, do hereby declare the nature of the said Invention
of "IMPROVEMENTS IN APPARATUS FOR REGULATING OR ADJUSTING THE POSITION
OF ENDLESS TRAVELLING WEBS OR BANDS EMPLOYED IN VARIOUS KINDS OF
MACHINERY," to be as follows, that is to say:-
This Invention relates to an improved system, mode, or combination of
machinery for the purpose of regulating the revolving guide rollers of endless
wire cloths, felt webs, or other endless bands, and consists in. fixing trans-
versely to one end of the shaft upon which the guide roller works an elongated".
bush having made through it a hole in which a screw thread is cut, and in it".
Ca screw shaft works, having fixed at one end of. it a tangential screw. wheel,
into the teeth of which gears the thread or threads of a tangential worm or

page_text: screw or worm disc keyed or otherwise fixed to a shaft working in bearings,
and having also on it a conical pulley, and below this conical pulley there is
situated a conical supporting roller, over the upper surface of which the
travelling web passes, the travelling web having during its motion a natural
tendency to move or slip laterally on its rollers, and when thus passing
laterally over the supporting roller its edge passes between this and the upper
conical roller, the space between the two being rather less than the thickness
of the travelling web or felt. When the edge of the web or felt thus comes
between the two rollers it causes them to revolve and along with the upper
one on the shaft of it to which the tangential screw or worm disc is fixed;
this revolution of the tangential screw causes the wheel into which it gears
also to revolve, and at the same time the screw shaft, thus causing the bush
into which it is screwed to recede or move forward (according to the direction
in which the screw is turned), the bush as it moves or travels causing the
guide roller also to travel at that end in the same direction, this motion of
the guide roller bringing the web, felt, or wire cloth into its proper
position. In case of the web, felt, or wire cloth travelling laterally to
the side of the guide roller opposite to that herein-before referred to, a
similar arrangement of conical rollers is fixed, between which the edge of the
travelling band passes, the upper one being fixed on a longitudinal shaft
extending across the machine, and having at its further end a pinion gearing
into a pinion fixed on the shaft carrying the tangential screw, so that when
the last-named set of rollers are caused to revolve by the action of the edge
of the travelling belt it causes the tangential screw arrangement to move in
the opposite direction, and thus moves the guide roller in the opposite
direction to that herein-before described. This guiding arrangement keeps
the travelling band in a nearly central position on the rollers over which it
SPECIFICATION in pursuance of the conditions of the Letters Patent, filed.
by the said Charles Anderson in the Great Seal Patent Office on the s
10th September 1864.
. TO ALL TO WHOM THESE PRESENTS SHALL COME, I, CHARLES
ANDERSON, of Fettykil Leslie, in the County of Fife, North Britain, Manu-
facturer, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters 8
Patent, bearing date the Fourteenth day of March, in the year of our

page_text: Lord One thousand eight hundred and sixty-four, in the twenty-seventh
year of Her reign, did, for Herself, Her heirs and successors, give and grant
unto me, the said Charles Anderson, Her special license that I, the said Charles
Anderson, my executors, administrators, and assigns, or such others as I,
the said Charles Anderson, my executors, administrators, or assigns, should
at any time agree with, and no others, from time to time and at all
times thereafter during the term therein expressed, should and lawfully
might make, use, exercise, and vend, within the United Kingdom of Great
Britain and Ireland, the Channel Islands, and Isle of Man, an Inven-
tion for "IMPROVEMENTS IN APPARATUS FOR REGULATING OR ADJUSTING THE
POSITION OF ENDLESS TRAVELLING WEBS OR BANDS EMPLOYED IN VARIOUS KINDS OF
MACHINERY," upon the condition (amongst others) that I, the said Charles
Anderson, my executors or administrators, by an instrument in writing under
my hand and seal, or under the hand and seal of one of them, should par-
ticularly describe and ascertain the nature of the said Invention, and in
what manner the same was to be performed, and cause the same to be
filed in the Great Seal Patent Office within six calendar months next and
immediately after the date of the said Letters Patent.
NOW KNOW YE, that I, the said Charles Anderson, do hereby declare
the nature of my said Invention, and in what manner the same is to be
performed, to be particularly described and ascertained in and by the
following statement, reference being had to the accompanying Drawings, and
to the letters and figures marked thereon, that is to say :-
My said Invention relates to an improved system, mode, or combination of
mechanism for the purpose of regulating or adjusting the position of endless
travelling webs or bands employed in various kinds of machinery when such
happen to depart from their true course. For this purpose I fit transversely
to one end of the shaft upon which the guide or adjusting roller works a
moveable bush made to slide on a suitable cast metal bracket having through
it a screw-threaded hole in which a screw shaft works, at one end of which is
is fixed a tangential screw wheel, into the teeth of which gears the thread or
threads of a tangential worm or screw or worm dise keyed or otherwise fixed
to a shaft placed at a right angle thereto working in bearings, and having also
on it a conical roller or pulley, and below this conical roller there is situated
a conical supporting roller, over the upper surface of which the travelling web
passes, the travelling web having during its motion a tendency from
atmospheric or other causes to move or slip laterally on its rollers, and when
thus passing laterally over the supporting rollers its edge passes between this
and the upper conical roller, the space between the two being rather less than

page_text: than the thickness of the travelling web. When the edge of the web thus comes
between the two rollers it causes them and the tangential screw or worm disc
to revolve, and along with them the worm wheel into which the latter gears, as
also the screw shaft, thus causing the bush into which it is screwed to recede
or move forward (according to the direction in which the screw is turned), the
bush as it moves or travels causing the guide roller also to travel at that end in
the same direction or out of the square, this motion of the guide roller
bringing the web into its proper position. In case of the web travelling laterally to
the side of the guide roller opposite to that herein-before referred to, a similar
arrangement of conical rollers is fixed, between which the edge of the travelling
web passes, the upper one being fixed on a longitudinal shaft extending across
the machine, and having at its further end a pinion gearing into another pinion
fixed on the shaft carrying the tangential screw, so that when the last-named
set of rollers are caused to revolve by the action of the edge of the travelling
web it causes the tangential screw arrangements to move in the opposite
direction, and thus moves the guide roller in the opposite direction to that
herein-before described. These guiding arrangements keep the travelling
web in a nearly central position on the rollers over which it travels.
And in order that my said Invention may be properly understood I shall
now proceed to describe the system or mode under which the same is or may
be used or practically carried into effect, reference being had to the several
Figures upon the explanatory Sheet of Drawings which I have hereunto
appended, and in the several Figures of which similar parts are indicated by
similar letters of reference, that is to say:-
Figure 1 represents a portion of a side elevation of the framing of a paper-
making machine, which is given for illustration, showing the arrangement of
an endless web A as it passes over and under the carrying rollers B, B¹, B³,
etc., and through the guide roll C; Figure 2 is an end elevation of the same
portion of a paper-making machine; Figure 3 shows, drawn to a larger scale,
the main portion of the guide apparatus, which is the subject of my present
Invention. On referring to Figures 1 and 2 it will be seen that the web A
passes first over the top of the adjustable supplementary roller B, below the
second and over the third supplementary rollers B¹ and B³, thence between
the friction pulleys D and D¹ of the guide C, and finally under the lower sup-
plementary roller B³, whence it proceeds round the large drying cylinder E,
whose position inside the framing A is indicated by the red line Et. The
screws F, F, on the upper part of the framing, and more particularly seen in
the end elevation Figure 2, are for the purpose of raising or lowering the
upper supplementary roller B to suit the tension required on the web A

page_text: accordingly as it becomes stretched or contracted by atmospheric or or other
changes. This last-named mechanism, however, forms no part of my present
.Invention, reference being made to it only for the purpose of facilitating the
description of the use and application of the apparatus now about to be more
particularly specified. Hitherto there has been much difficulty in adjusting
or guiding endless travelling webs or bands in their true course, they having
a tendency to slip or slide laterally on the cylinders or rollers on which they
are made to move. This lateral or sidelong movement of the-endless web is
very detrimental to it, and to obviate this there are placed on both sides of the
main framing of the machine on which the endless web is working metal
brackets G and G', of the form shown in the accompanying Figures, but that
one G¹ placed on the left-hand side being more particularly seen in: Figure 8,
to which is shown attached the main gearing of the endless web guide
mechanism, which consists of two similarly formed convex friction rollers H
and H', the lower one of which H is capable of revolving upon the fixed
stud I, but the upper one H¹ is firmly keyed or otherwise fixed upon a short
revolving shaft J, which is carried in bearings K in the bracket G¹, and on
that portion of the shaft J which is situated in the open part of the bracket G¹
there is fixed the tangential screw L, which gears into the-worm wheel Li on
the shaft M, more particularly seen in Figures 1 and 2. Upon the shaft J
there is also fixed the spur pinion M', which gears into a similar pinion M
fixed on the shaft M³ passing through a suitable bearing in the upper part
of the bracket G³, and extending across the whole width of the machine,
where its other end is carried in a bearing in the bracket G, and on this shaft
is fixed a friction roller P, similar in form to those herein-before described,
whilst immediately below the roller P there is situated another similar roller Q.
To the upper end of the shaft M is coupled the adjusting screw N, which
passes into a corresponding screwed hole in the sliding bearing O; carrying
one end of the shaft of the guiding roller B, and this is arranged in such
manner that when the screw N is turned in one direction it raises the
bearing O and along with it the end of the guiding roller B2; when it is turned
in the reverse direction the sliding bearing O and the same end of the
roller B are depressed.
Having now described the principal details of my Invention, I will now
explain the mode in which the same operates. It will be observed that it is
a right-hand screw that is used, and that the endless web is travelling in the
direction of the arrow. When the machine is in motion as herein-before
described, the travelling endless web A frequently slips, slides, or travels.
laterally upon the surfaces of the cylinders or rollers over, around, and under

page_text: which it passes. Supposing it in this instance to slip or travel towards the left-
hand side of the machine, its edge gradually approaches towards those parts of
'the friction rollers H and H³, where the space between them becomes rather
'less than the thickness of the web itself; when the web thus touches or gets
between the surfaces of these friction rollers it causes them to revolve, and the
upper one H¹ being firmly fixed upon the shaft J, to which the tangential
screw L is also fastened, and gearing into the worm wheel L³, causes the
shaft M to revolve carrying with it the screw N, and according to the time
during which the web A bears upon the surfaces of the-friction rollers H and
H', just so much is the screw turned round in one direction, and in this
manner the supplementary roller B' is elevated to an extent sufficient to cause
the felt to recede from that side of the machine. When it happens that the
web A in travelling moves towards the side of the machine opposite to that
herein-before described, its edge in a similar manner causes the friction
rollers P and Q to revolve, and whilst the upper roller is fixed upon the shaft M³
extending across the machine, and to the opposite end of which the spur
pinion M' is fixed, when these friction rollers P and Q are caused to revolve
they by means of the intervention of the spur gear M² and M³ cause the
tangential screw arrangement to revolve in the opposite direction, and in this
manner the sliding bearing O and that end of the supplementary roller B² are
drawn or screwed backwards or downwards, and this action, either in the one
or the other direction, goes on until the felt A continues as near as possible in
a continuously uniform course as it travels.
Having now described and particularly ascertained the nature of my said
Invention, and the manner in which the same is or may be used or practically
carried into effect, I would observe in conclusion that I do not confine myself
to the precise details or arrangements herein-before described and referred to,
as variations may be made therefrom without deviating from the true
principles and main features of my Invention, neither do I consider as my
Invention the arrangement of the guide roller, sliding bush, and screw shaft
working together; but what I consider to be novel and original, and therefore
claim as the Invention secured to me by the herein-before in part recited
Letters Patent, is,-
First, the general arrangement and construction of machinery or apparatus
as herein-before described, no claim being made to the parts taken separately.
Second, the mode of guiding, regulating, or adjusting automatically endless
travelling webs or bands employed in various kinds of machinery in the
manner herein-before described as applied to paper-making making machinery,
or any mere modification thereof.

page_text: Third, the combination of the herein-before described system of guide
apparatus with all classes of machinery in which endless webs or bands are
used, or any mere modification thereof.
In witness whereof, I, the said Charles Anderson, have hereunto set
my hand and seal, this Seventh day of September, One thousand eight
hundred and sixty-four.
CHARLES ANDERSON. (L.s.)