Improvements in or connected with Paper-making Machines.
Year: 1896

page_text: Date of Application, 29th June, 1896
Complete Specification Left, 29th Mar.. 1897-4ccepted, 1st May, 1897
PROVISIONAL SPECIFICATION.
Improvements in or connected with Paper-making Machines.
I, JOHN WESCOTT, of Reading Road, Wokingham, in the County of Berks,
Engineer, do hereby declare the nature of this invention to be as follows:-
My invention relates to the pumps or apparatus used for delivering paper pulp
on to the apron or wire cloth of a paper-making machine, the object of my invention
being to provide means for accurately adjusting the throw of the pump plunger so
that the delivery of the paper pulp shall correspond with the weight per ream of
paper to be produced.
According to my invention the pin of the crank driving the pump instead of
being fixed to the crank-arm or disc is made to move radially and adapted to be
adjusted in any position between the extremity or circumference of the arm or disc
and a position in which the axis of the crank-pin is in aligument with the axis of
the crank-shaft.
In practice I prefer to effect the adjustment of the crank-pin by the following
means. The pin itself is attached to a nut sliding in a groove in the arm or disc
which nut has passing through it a serew the rotation of which causes the nut to
traverse in its groove and so move the crank-pin nearer to or farther from the axis
of the crank shaft. The screw has fixed on it a bevel wheel with which a bevel
wheel on the crank-shaft engages in such a manner that when the said bevel
wheel on the crank-shaft is rotated relatively with the said crank shaft the screw
will be turned.
This arrangement of gearing is very advantageous, as it allows of the stroke of
the pump being varied whilst in operation, to effect an alteration of the delivery.
Dated this 20th day of June 1896
G. F. REDFERN & Co.,
4, South Street, Finsbury, London, Agents for the Applicant.
I, JOHN WESCOTT, of Reading Road, Wokingham, in the County of Berks,
Engineer, 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 aud by the
following statement :-
My invention relates to the pumps or apparatus used for delivering paper pulp
on to the apron or wire cloth of a paper-making machine, the object of my
invention being to provide means for accurately adjusting the throw of the pump
plunger so that the delivery of the paper pulp shall correspond with the weight
per ream of paper to be produced.
According to my invention the pin of. the crank driving the pump instead of
being fixed to the crank-arm or disc is made to move radially and adapted to be

page_text: adjusted in any position between the extremity or circumference of the arm or dise
and a position in which the axis of the crank-pin is in alignment with the axis of
the crank-shaft.
To enable my invention to be fully understood I will describe the sanie by
reference to the accompanying drawing, in which:-
Figure 1 is a sectional side elevation; and,
Figure 2 is a front elevation of a pump having my improvements applied
thereto.
a-is the pillar or frame having a bearing at its upper end for the driving shaft b
and c is the crank arm fixed to the said shaft, this crank arm c is formed with a
longitudinal recess d within which slides a nut e carrying the pin f of the crank.
This nute has passing through it the screw g which extends longitudinally through
the crank arm and is free to rotate therein but held against longitudinal movement.
One end of this screw g carries a bevel pinion with which another bevel wheel i,
capable of rotating upon the boss of the crank arm c, engages in such a manuer
that when the said wheel is rotated relatively with the said boss of the crank arm
the pinion and consequently also the screw g will be rotated in order to cause the
traverse of the nut e in. the recess d for the purpose of adjusting the position of
the crank pin relatively with the axis of the crank shaft b to adjust the throw or
travel of the pump plunger in a manner which will be readily understood.
The pinion has formed integral with it a hand wheel for enabling the said
pinion to be readily adjusted.
It will be obvious that with the arrangement of gearing herein before described it
will be possible to vary the stroke of the pump whilst the latter is in operation in
order to effect an alteration of the delivery.
Having now particularly described and ascertained the nature of my said iuven-
tion and in what manner the same is to be performed, I declare that what I
claim is :-
1. The combination with the pulp pump of a paper-making machine of a crank
having an adjustable crank pin for permitting of the accurate and ready adjust-
ment of the stroke of the pump plunger, substantially as, and for the purposes,
described.
2. The combination with the pulp pump of a paper-making machine of a crank
the piu of which is designed to be adjusted by means of a screw and gearing,
substantially as hereinbefore described and illustrated in. the accompanying
drawing.
Dated this 97th d...
1005
G. F. REDFERN & Co.,
4, South Street, Finsbury, London, Agents for the Applicant.