Improvements in Guillotine Paper Cutting Machines.
Year: 1890

page_text: Date of Application, 2nd July, 1890
Complete Specification Left, 25th Mar., 1891-Accepted, 25th Apr., 1891
PROVISIONAL SPECIFICATION.
Improvements in Guillotine Paper Cutting Machines.
We, HORTON HARRILD, Junior, of the firm of Harrild and Sons, of Fleet
Works, Farringdon Street, in the City of London, Printing Machine Manu-
facturers, and JOHN FREDERICK BUCKLAND, of the same place, Engineer, do
hereby declare the nature of this invention to be as follows:-
This invention has reference to guillotine paper cutting machines such as those
employed for trimming the edges of folded newspapers, pamphlets or books, and
the improvements comprise a novel arrangement or combination of the parts by
which the up and down motion is given to the knife frame and to the pressure
or clamping beam, the said novel arrangement or combination having for one
object the doing away with the counterbalance weights hitherto employed in this
class of machine to prevent the knife frame and beam descending of their own
weight when the machine is disconnected from the driving power or the brake is
applied. The improvements also include a novel arrangement of clutch mechanism
whereby the machine can be readily stopped and started by a simple movement of
the attendant's foot or hand.
The parts by which the up and down motion is given to the knife frame and
pressure or clamping beam are arranged or combined as follows: A worm on the
first motion shaft drives a worm wheel on the same shaft as a spur or cog wheel;
this wheel gears with and drives another wheel on a crank shaft the cranks of which
as the shaft revolves give up and down motion to slide blocks which move in vertical
guides in the side frames of the machine. These slide blocks are connected by rods
to upper slides which carry the knife frame and the pressure beam so that these
receive the requisite up and down motion. The pressure beam moves in vertical
guides, and the knife frame moves during the lower part of its travel, in inclined
guides in the pressure beam so that by its slanting or oblique movement it acts upon
the paper with a draw cut. The motion being communicated through the inter-
mediation of worm gearing from the first motion shaft to the parts that actuate the
knife frame, the knife frame is not liable to descend by its own weight, and therefore
the usual counterbalance weights may be dispensed with.
The arrangement of clutch mechanism whereby the machine can be readily
stopped and started consists of a split clutch mounted on the shaft of the flywheel
and having dowels or other analogous devices to enter corresponding holes in the
wheel so that the clutch and wheel shall rotate together. The clutch has flanges
or lugs tapped to receive a right and left handed screw bolt which when given a
slight turn brings the flanges towards each other and thereby causes the clutch to
grip the shaft; when the shaft is thus gripped it turns with the fly-wheel and clutch;
when on the other hand the clutch is slacked the fly-wheel and clutch turn loosely
on the shaft. The right and left handed screw bolt is turned by means of toggle-
levers connecting it with a sleeve on the shaft, this sleeve being itself worked by a
clutch fork or other like device readily moved by the foot or hand of the attendant.
Dated this 2nd day of July 1890.
J. C. MEWBURN,
55 & 56, Chancery Lane, London, Patent Agent,

page_text: COMPLETE SPECIFICATION.
Improvements in Guillotine Paper Cutting Machines.
We, HORTON HARRILD, Junior, of the firm of Harrild and Sons, of Fleet
Works, Farringdon Street, in the City of London, Printing Machine Manu-
facturers, and JOHN FREDERICK BUCKLAND, of the same place, 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 and by the following
statement:-
This invention has reference to guillotine paper cutting machines and the
improvements comprise a novel arrangement or combination of the parts by
which the up and down motion is given to the knife frame and to the pressure
or clamping beam; the said novel arrangement or combination having for one
object the doing away with the counterbalance weights hitherto employed in this
class of machine to prevent the knife frame and beam descending of their own
weight when the machine is disconnected from the driving power or the brake is
applied. The improvements also include a novel arrangement of clutch mechanism
whereby the machine can be readily stopped and started by a simple movement of
the attendant's foot or hand.
The accompanying drawings represent a guillotine paper cutting machine in which
our improvements are embodied.
Figure 1 is a vertical section on the line x x of Figure 2,
Figure 2 is a side elevation and Figure 3 a horizontal section on the line y y of
Figure 1.
Figure 4 is a section on the line z z of Figure 3 looking in the direction of the
arrow.
a is the knife frame and the pressure or clamping beam. The parts by which
according to our invention the up and down motion is given to the said knife frame
and beam are arranged or combined as follows:-A worm c on the first motion shaft d
drives a worm wheel e on the same shaft as a spur or cog wheel g; this wheel
gears with and drives another wheel h on a crank shaft i the cranks of which as the
shaft revolves give up and down motion to slide blocks k k which move in vertical
guides in the side frames of the machine. These slide blocks k are connected by
rods m to upper slides n which carry the knife frame a and the pressure beam 6 50
that these receive the requisite up and down motion. The pressure beam moves in
vertical guides, and the knife frame moves during the lower part of its travel in
inclined guides in the pressure beam so that by its slanting or oblique movement
it acts upon the paper with a draw cut. The motion being communicated as
described through the intermediation of worm gearing from the first motion shaft
to the parts that actuate the knife frame, the knife frame is not liable to descend
by its own weight and therefore the usual counterbalance weights may be
dispensed with.
The arrangement of clutch mechanism whereby the machine can be readily
stopped and started consists of a split clutch r mounted on the fly wheel shaft d and
having dowels t or other analogous devices to enter corresponding holes in the
wheel so that the clutch and wheel shall rotate together. The clutch has flanges
or lugs u u tapped to receive screw bolts ve which when given a slight turn bring
the flanges towards each other and thereby cause the clutch to grip the shaft d.
When the shaft is thus gripped it turns with the fly wheel and clutch; when on the
other hand the clutch is slacked the fly wheel and clutch turn loosely on the shaft.
The screw bolts vv are turned by means of toggle levers w w connecting them with
a sleeves on the shaft, this sleeve being itself worked by a clutch, fork or other
like device (not shown) so placed as to be readily moved by the foot or hand of the
attendant.

page_text: Having now particularly described and ascertained the nature of our said inven-
tion, and in what manner the same is to be performed, we declare that what we
claim in respect of guillotine paper cutting machines is :-
-
1. The arrangement or combination of parts, substantially as herein before
described, for giving up and down motion to the knife frame and pressure or
clamping beam.
2. The arrangement of clutch mechanism substantially as hereinbefore described
whereby the machine can be readily stopped and started by a simple movement of
the attendant's foot or hand.
Dated this 24th dow of March 1901
J. C. MEWBURN,
55 & 56, Chancery Lane, London, Patent Agent.