IMPROVE- MENTS IN THE METHOD OF FEEDING PAPER FROM THE ROLL OR WEB TO A PRINTING MACHINE, AND IN THE MEANS EMPLOYED THEREFOR
Year: 1885

page_text: or web юагтшип шасне, ана ш W
therefor.
модно шорготой
I THOMAS MAGUIRE of Stock-Clough, Feniscowles, Blackburn, in the County of
Lancaster, Stationer, do hereby declare the nature of my Invention for IMPROVE-
MENTS IN THE METHOD OF FEEDING PAPER FROM THE ROLL OR WEB TO A PRINTING
MACHINE, AND IN THE MEANS EMPLOYED THEREFOR, to be as follows:-
The Invention relates to that class of printing machine which is employed for
printing newspapers or the like from a continuous web of paper.
The roll or web of paper as now fed to such machine is mounted in bearings and
drawn direct from the roll over guides to the printing cylinder and in order to
prevent the speed of delivery over-running the surface speed of the printing
cylinders, the axle of the roll is provided with a break, which prevents the roll
over-running the speed at which the web is required to be fed to the machine.
The paper so delivered has necessarily a strain upon it which often causes a
break in the web, and so occasions a delay in the process of printing.
These present improvements are designed to prevent any undue strain upon the
paper by an arrangement of apparatus which will deliver the paper to the machine
at a speed uniform with the surface speed of the printing cylinder; and
The improvements consist in mounting the roll of paper on a cylinder which is
driven by gearing at a speed uniform with the surface speed of the printing
cylinder. The revolution of this cylinder supporting the roll of paper naturally
causes it to be unwound and delivered in a continuous web to the surfaces of the
printing cylinders, without undue strain or tension. The position of the roll of
paper on its supporting cylinder is maintained whilst its weight and bulk are being
reduced by means of its axle or centre sliding in slots or against inclined bearing
surfaces, a means being provided for weighting the roll as its diameter becomes
reduced.

page_text: diameter and weight is being reduced, and its speed increased I connect to the
framing a¹ levers g the ends of which are weighted, these levers are so arranged
that when the roll is first placed on its supporting cylinder c the said levers are
thrown back so as to exercise no influence on such roll, but during the time of
delivery whilst its weight and bulk is being reduced as shewn in dots, the levers g
are thrown over as shewn in Fig. 2-so as to bear and exert a pressure upon the
axle or centre of the roll d such pressure being gradually and uniformly increased
in proportion as the weight and bulk of the roll decreases, thus causing the
frictional surfaces of contact between the driving cylinder c and the roll or web of
paper to maintain a uniforın pressure. The starting and stopping of the feeding
apparatus is effected by means of the handle h and clutch i.
Although I have shewn a practical method of carrying my Invention into effect
I wish it to be understood that other equivalent means may be employed for
delivering the web from the roll by frictional contact with its diminishing
periphery without departing from the essential features of this Invention.
Having now particularly described and ascertained the nature of my said
Invention, and in what manner the same is to be performed I declare that what
I claim is,-
The delivery of a web of paper to the type cylinders of printing machinery by
means of a revolving cylinder or its equivalent which will by frictional contact
with the roll of paper cause the same to uniformly deliver a web of paper at one
even tension to the printing cylinders substantially as described herein and set
forth in the accompanying drawings.