Improvements in Apparatus for Imparting Vibration to the Wire Frames of Paper Making Machines, and applicable other Similar Purposes.
Year: 1896

page_text: Date of Application, 26th Sept., 1896
Complete Specification Left, 23rd June, 1897-Accepted, 24th July, 1897
Improvements in Apparatus for Imparting Vibration to the Wire
Frames of Paper Making Machines, and applicable other
Similar Purposes.
We, ANNANDALE AND SON, LIMITED, of Polton Paper Works, Polton, Midlothian,
Paper Manufacturers, and SAMUEL BROWN, Engineer with said Firm, at the above
address, do hereby declare the nature of this invention to be as follows:-
This invention which relates to apparatus for imparting transverse vibratory or
shaking motion to the wire frames of paper making machines, has for its object the
provision of improved means whereby the extent of shaking movement may be
altered or adjusted whilst the machine is in motion.
To that end the throw of the eccentric or eccentrics employed to transmit the
vibratory movement to the paper machine from a rotating shaft is made variable for
which purpose instead of being keyed directly on the rotating shaft the eccentric is
mounted on a square or other block keyed on the shaft, and has formed in it an
oblong orifice such as to permit of the eccentric sliding over the block. It may thus
be made to assume a position practically concentric with the shaft and be moved
gradually into positions of greater or less eccentricity so that the movement of the
eccentric strap and rod and of the wire frame to which they are connected receive
greater or less motion. For effecting the desired movement of the eccentric whilst
the shaft rotates, and therefore without stopping the paper machine, the eccentric is
engaged by two arms of a bell crank mounted on a ring or collar on the shaft the
other arms of the bell crank being jointed to links on a sleeve or boss fitted to slide
on the shaft. The sleeve or boss is operated either by hand by means of a lever
having a pin on it entering a groove in the sliding sleeve, or as is preferred from a
screwed shaft passing through a nut in the lever and provided with a hand wheel.
The device for varying the throw of the eccentric may obviously be applied to
apparatus other than the wire frames of paper making machines, to which variable
reciprocating movement is to be imparted.
Dated this 25th day of September 1896
WALLACE FAIRWEATHER,
Of the Firm of Cruikshank & Fairweather,
Chartered Patent Agents,
St. Vincent Street, Glasgow, Agent for the Applicants.
COMPLETE SPECIFICATION.
Improvements in Apparatus for Imparting Vibration to the Wire
Frames of Paper Making Machines, and applicable to other
Similar Purposes.
We, ANNANDALE AND SON, LIMITED, of Polton Paper Works, Polton, Midlothian,
Paper Manufacturers, and SAMUEL BROWN, Engineer with said Firm, at the above

page_text: address, 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 which relates to apparatus for imparting transverse vibratory or
shaking motion to the wire frames of paper making machines, has for its object the
provision of improved means whereby the extent of shaking movement may be
altered or adjusted whilst the machine is in motion.
This invention is illustrated by the accompanying drawings, Figure 1 being a
sectional elevation, Figure 2 a plan of the improved apparatus and Figure 3 a
transverse section of the eccentric employed thereon.
In carrying out the invention the throw of the eccentric A or eccentrics employed
to transmit the vibratory movement to the paper machine from a rotating shaft such
as B is made variable for which purpose instead of being keyed directly on the rotating
shaft B the eccentric A is mounted on a square or other block C keyed on the shaft B,
and has formed in it an oblong orifice A¹ such as to permit of the eccentric A sliding
over the block C. It may thus be made to assume a position practically concentric
with the shaft B and be moved gradually into positions of greater or less eccentricity
so that the movement of the eccentric strap D and rod E and of the wire frame to
which they are connected receive greater or less motion. For effecting the desired
movement of the eccentric A whilst the shaft B rotates, and therefore without
stopping the paper machine, the eccentric A is engaged by two arms F of a bell
crank mounted on a ring or collar G on the shaft B the other arins F¹ of the bell
crank being jointed to links H on a sleeve or boss I fitted to slide on the shaft B.
The sleeve or boss I is operated either by hand by means of the lever J having a
pin J¹ on it entering a groove 1' in the sliding sleeve I, or as is preferred, from a screwed
shaft K passing through a nut L, in the lever J and provided with a hand wheel W.
The device for varying the throw of the eccentric may obviously be applied to
apparatus other that the wire frames of paper making machines, to which variable
reciprocating movement is to be imparted.
Having now particularly described and ascertained the nature of our said
invention, and in what manner the same is to be performed, we declare that what
we claim is
Apparatus for imparting vibration to the wire frames of paper making machines
and the like consisting of an eccentric mounted on a block keyed to a rotating shaft
said eccentric being capable of movement upon said block to vary the eccentric
throw and thereby alter the extent of shaking movement whilst the machine is in
motion substantially as described with reference to the drawings annexed.
Dated this 21st day of June 1897.
WALLACE FAIRWEATHER,
Of the Firm of Cruikshank & Fairweather,
Chartered Patent Agents,
St. Vincent Street, Glasgow, Agent for the Applicants.