Year: 1886

page_text: ,
I WILLIAM CROSLAND of New Street Newton Heath, near Manchester, in the
County of Lancaster, Machinist, do hereby declare the nature of my invention to
be as follows: -
This invention refers particularly to that construction of Paper cutting machine
"in which the knife is guided up and down by diagonal slots upon pins fixed in the
stationary framework, so as to cause the same to descend in a parallel direction,
and has for its object a means of adjusting the knife at one extremity so as to raise
or lower it to the greatest nicety of adjustment and thus allow for any inequality
in the affixing of the knife in position or in the grinding of the knife as for
instance when the knife is ground down more at one extremity than another, the
cutting edge will not in such case be parallel with the table.
In order to remedy this defect I mount one of the aforesaid guiding pins upon
an eccentric and which eccentric by means of the application to the purpose of
∙a worm 'and worm wheel and winch handle I am enabled to turn upon its axis
and thus to raise or lower the knife at that extremity sufficient to allow for any
inequality in the grinding or affixing as aforesaid.

page_text: COMPLETE SPECIFICATION.
Improvements in Guillotine Paper Cutting Machines.
I WILLIAM CROSLAND of New Street, Newton Heath, near Manchester in the
County of Lancaster, Machinist, do hereby declare the nature of my 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 refers particularly to that construction of Paper cutting machine
in which the knife is guided up and down by diagonal slots upon pins fixed in the
stationary framework so as to cause the same to descend in a parallel direction, and
has for its object a means of adjusting the knife at one extremity so as to raise or
lower it to the greatest nicety of adjustment and thus allow for any inequality in
the affixing of the knife in position or in the grinding of the knife as for instance
when the knife is ground down more at one extremity than another, the cutting
edge will not in such case be parallel with the table.
In order to remedy this defect I mount one of the aforesaid guiding pins upon
an eccentric and which eccentric by means of the application to the purpose of a
worm and worm wheel and winch handle I am enabled to turn upon its axis and
thus to raise or lower the knife at that extremity sufficient to allow for any
inequality in the grinding or affixing as aforesaid.
On the accompanying drawing Fig. 1. is a front view of so much of a Guillotine
Paper Cutting machine as is necessary to illustrate my improvements which are
shewn applied thereto..
Fig. 2. is a front view and Fig. 3. a side sectional view (on a larger scale) of the
eccentric mechanism alone..
In all the views, the knife stock a. is guided up and down in the usual
manner by the diagonal slots or recesses b. and b¹. At one extremity the pin c.
(carrying the usual friction roller c¹) embraced by the slot b. is mounted in the
frame d. as heretofore but at the other extremity of the knife stock I mount the
usual friction roller (embraced in this case by the slot or recess b¹) upon a small
eccentric e¹ formed at the front extremity of a spindle f. This spindle f. is
mounted in bearings and carries a worm wheel g. gearing into a worm h. operated
by the hand-wheel i.
It will now be apparent that if a partial revolution is imparted to the spindle f.
by means of the hand wheel i. and intermediate worm gearing, that the eccentric e¹
will by turning with the spindle f. upon its axis either raise or lower the knife
stock a. at that extremity as required and that thus a means of adjustment is
obtained sufficient to allow for any inequality in the affixing of the knife a¹ in
position or in the grinding of the knife as aforesaid.
Although I prefer worm gearing for actuating the eccentric spindle f. I do not
confine myself to such gearing as it will be obvious that other equivalent
arrangement of mechanism might be substituted without departing from my
invention.

page_text: Having thus particularly described and ascertained the nature of my inven
tion and in what manner the same is to be performed, I declare that what
I claim is:-
In guillotine paper cutting machines, mounting one extremity of the knife stock
upon an adjustable eccentric substantially as and for the purposes hereinbefore
described and illustrated on the accompanying drawing.
Dated this 2nd dev of November 1888
JOHN G. WILSON,
Agent for the Applicant,