Improvements in or relating to Paper Cutting Machines, also applicable to Embossing and similar Presses.
Year: 1893

page_text: Date of Application, 29th Mar., 1893
Complete Specification Left, 27th Dec., 1893-Accepted, 17th Mar., 1894
PROVISIONAL SPECIFICATION.
Improvements in or relating to Paper Cutting Machines, also
applicable to Embossing and similar Presses.
I, WILLIAM CROSLAND of New Street, Oldham Road, Manchester, Machinist
do hereby declare the nature of my said invention to be as follows:-
This invention refers to guillotine paper cutting machines and more particularly
to a starting and stopping movement for which I obtained Letters Patent No. 4753
on the 17th day of March 1891 and consists of a simpler, and more convenient
arrangement of mechanism whereby the movement of the guillotine lever is
instantly arrested and started and all shocks or vibrations are avoided.
In accordance with my invention 1 employ a lever or rod having in its length a
knuckle or knee joint and which is connected at one extremity to the guillotine
lever and at the other extremity to the driving disc of the machine. Said connecting
rod normally tends to fold and so neutralise the movement of the driving disc
and allow the guillotine lever to stand still. In order that the thrust of the disc
shall be imparted to said lever suitable means are provided (either a foot or hand
lever) whereby the knuckle jointed lever may be straightened out or pulled into
line with the driving pin of the disc and so take up the thrust and impart the
movement to the guillotine lever as aforesaid.
This improved driving arrangement is positive in both its movements that is
when in its driving position it both drives the guillotine in the cutting direction
and afterwards withdraws it in lieu of the withdrawing being done by a strong
spring as described in my former Specification.
I have found that this arrangement stops and starts the machine instantly and
without shocks. It will be obvious that this knuckle action is equally applicable
to embossing, arming and other similar presses.
Dated this 28th day of March 1893.
JOHN G. WILSON & Co.,
Agents.
COMPLETE SPECIFICATION.
Improvements in or relating to Paper Cutting Machines, also
applicable to Embossing and similar Presses.
WILLIAM CROSLAND Machinist. New Street Oldham Road Manchester
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 :-
My invention relates to a new method of starting & stopping a machine & is
most applicable to those machines which require an intermittant motion, that is to
stand & move alternately such as cutting machines, printing machines & embossing
machines.
That this invention may be better understood I have annexed drawing illus-
trative of my improvements which I now describe with the assistance of letters
of reference marked thereon.
Fig. 1 shows part of a paper cutting machine with my invention attached.
Fig. 2 is an enlarged view of the invention shown in 2 positions.
Fig. 3 shows application of same for arming or other kind of press.

page_text: A Figs. 1 & 2 is an horizontal shaft on the end of which is a disc or crank B
with stud or crank pin K revolving round continuously in the direction shown by
the arrow, C is a lever fixed to frame of machine by stud D on which it oscillates,
the upper end is attached by any convenient method to casting E bearing a knife
marked F, in this casting are 2 diagonal slots G mounted on 2 studs H which
are fixed in frame of machine, to the lower end of lever C is attached a connecting
rod I by a small casting J through which connecting rod I passes & can be length-
ened or shortened by 2 nuts a a, this casting is attached to lever C by a swivel
joint, to this small casting is attached a wrought iron lever L, the connecting rod I
is in 2 parts connected by a knuckle joint M one end of this connecting rod is
attached to disc B by stud K in such a manner that when the disc B revolvs the
knife-stock E is moved up & down by lever C to which it is connected. The
connecting rod I has by its own weight a tendency to double up as shown by
dotted lines Fig. 2, when this takes places the lever C remains at rest & the
connecting rod I bends & straightens alternately as the disc B revolvs, when it is
desired to put the knife in motion the lever L is pressed in the direction of the
arrow which maintains the connecting rod I in a straight position, this moves
lever C & knife-stock E as before mentioned. When lever L is released the
weight of knuckle joint M draws the connecting rod I out of the straight line &
lever C again remains at rest.
Fig. shows the same invention applied to a different machine A is an upright
frame standing from the floor the upper part of which forms a platten D, C is a
bottom platten sliding up & down in frame A, B is a revolving disc carrying
crank pin K connected to connecting rod 1, the other end of which is connected to
bottom platten C by joint E, this connecting rod has also a knuckle joint M
attached by a link to lever L, on the lower end of this lever L are 2 branches, one
of which forms a treadle c, the opposite end b carries a balance weight N which
keeps the treadle in the position shown on the drawing & also bends the knuckle
joint M & draws the lever I out of the straight position thus cancelling the up
& down motion given by disc B, when it is desirable that the platten should
be raised the top part of lever I is again pressed in the direction of the
arrow or the foot is placed on the treadle c whichever is found most convenient,
this presses back the connecting rod I into a straight vertical position & the motion
of pivot K is communicated at once to platten C, when the lever is released the
balance weight N draws back connecting rod I into a bent position & the platten
remains at rest.
Having now particularly described and ascertained the nature of my said
invention, & in what manner the same is to be performed I declare that what
1 claim is
The application of a connecting rod with a knuckle joint which can be straight-
ened or bent as herein described for cutting, embossing or printing paper.
Dated this 26th day of December 1893.
WILLIAM CROSLAND.