Year: 1893

page_text: The mechanism for the working of the indicating hand B, is contained in a box A,
which is closed in front by a pane of glass on which the scale is marked. The
indicating hand B, is made in one piece with the smaller hand B¹, which is at right
angles to the former, and is fast on an axis b. Whilst the hand B, shews on the
scale s the thickness of the paper, the hand B' shews on a second scale s the weight
of the paper. Fast on the axis b is a small tooth wheel a which gears with a toothed
sector C pivotted at c. This toothed sector is connected to a double lever D, loose
on the spindle b on which it turns as a fulcrum. At the other end of the double
lever D, i.e.opposite to the turning point e of the tooth bow lever c the double
lever D is connected by means of a pin and slot to the pressing rails E.
Through the adjusting screw as shewn in Figure 10 these pressing rails E are
connected to a frame which carries the supports of a pressing roller G.
Between
this roller G and one of the last rollers I of the paper machine the paper, the
thickness of which is to be measured, is passed.
The apparatus is arranged so that if no paper is passed between the pressing
roller G and the roller I, the indicating hand stands at zero on the scale, which if
necessary can be obtained by means of the adjusting screw K. As soon as some
paper is between the rollers G and I, the pressing rails E are thereby raised, the
lever D is given a swinging movement around the spindle b, the toothed sector C
turns on its pivot c and in so doing rotates the pinion a on the spindle 6 thereby
turning it considerably and indicating by means of the hand B the thickness of the
paper, on the scales and the weight of the paper by means of the hand B' on the
scale s¹. The hands are returned to the zero position or towards the zero position
when the thickness of the paper is decreasing, by the spiral spring i round the
axis ; Figure 6 shews the positions of the hands B and B', the lever D and guide
rails E through the raising of the roller G.
As a rule one endeavours to procure paper of a thickness as equal as possible and
great differences should not occur. The paper machine should be regulated so that
the normal thickness can be regained as soon as possible. To indicate differences
the box A is surrounded by a nut d in which contact holdfasts R can be moved and
fixed by means of winged screws. The indicating hand B has a screw t (see
Figure 8) which presses down a contact of the holdfast R as soon as the hand
comes to the place where this holdfast is, through which the necessary electric
current is closed which works on the bells.
If it is required that the thickness of the paper should range between a maximum
and a minimum limit, two holdfasts of this kind are necessary and when the hand
rises or falls either the one or the other contact is closed. Through this the bells
are put into motion and for each holdfast one can use bells of different sound so
that one can tell from the sound in which direction the machine should be
regulated.
Figures 14 and 15 shew front and side elevations of a paper machine provided
with this invention.
The box A of the apparatus is fastened with screws to a U shaped iron U and
can be turned between the pillars S S on pivots Z. Underneath this U shaped
iron, a second bar T is provided between the pillars, which said bar T serves for
the reception of the screws L the points of these screws serve as supporters for the
apparatus and by means of the same the apparatus is brought into a nearly vertical
position. In Figure 14 an apparatus is represented with two contact holdfasts in
connection with the bells. In order to raise the indicating devices so as to
introduce the paper between the roller I and the pressing roller G, a lever H, has
been fixed to the pivot Z. This lever goes nearly vertically downwards and carries
a peg p which works into the U formed cutting of the frame S. When the
apparatus is fixed the peg pushes against one of the legs of the U frame S and to
avoid the removing of the apparatus, one support (on the right hand of Figure 14)
is arranged, so that through the loosening of the screw which is provided with a
lever arm V for this purpose, the raising of the horizontal iron U can be effected
and after the regulation, the screw is pulled on again and the U shaped horizontal
ل

page_text: iron U is prevented from turning. To pass the paper between the rollers G and I,
the screw V is loosened, the lever H is drawn to the front till the peg p pushes
against the front leg of the pillar capital S and the indicating device assumes the
position indicated by the dotted lines in Figure 15. When the parts are in this
position the paper is pulled through, the screw V is now tightened and the whole
apparatus is brought into the normal.
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. A device for attachment to a paper machine for the visible and audible
indication of the thickness of the paper, effected through a roller fixed above one
of the last rollers of the machine, which said roller operates the indicating hands,
causing them to travel over a fixed scale whereby any alteration in the thickness of
the paper is indicated by the said hands and the transgression of the allowable
limits is rendered audible through the closing of an electric current substantially as
described and shewn in the accompanying drawings.
2. In a device for attachment to a paper machine for the visible and audible
indication of the thickness of the paper, effected through a roller fixed above one
of the last rollers of the machine, means such as herein described for transferring
the vertical motion of the said roller to the indicating hands, consisting of a double
lever D connected to the pressing rails E, and turning loosely round the axis bon
which the indicating hands are fixed, the end of said double lever operating a
pivotted toothed sector which gears with a tooth wheel fast on the spindle to which
the indicating hands are secured substantially as described and illustrated in the
accompanying drawings.
3. In a device for attachment to a paper machine as claimed in the first claim,
the holdfasts R removeable on the box A, and provided with contact pegs with
which a screw t, on the hand B, on passing the hold fasts, closes the electric circuit.
substantially as and for the purpose hereinbefore described and illustrated in the
accompanying drawings.
Dated this 14th day of June 1892
F. W. GOLBY,
36, Chancery Lane, London, W.C., Patent Agent for the Applicant.