IMPROVEMENTS IN OR APPLICABLE TO PAPER-CUTTING MACHINERY
Year: 1877

page_text: LETTERS PATENT to William Crosland, of the City of Manchester, Machinist,
for the Invention of "IMPROVEMENTS IN OR APPLICABLE TO PAPER-CUTTING
MACHINERY."
PROVISIONAL SPECIFICATION left by the said William Crosland at the
Office of the Commissioners of Patents on the 21st December 1877.
WILLIAM CROSLAND, of the City of Manchester, Machinist.
OR APPLICABLE TO PAPER-CUTTING MACHINERY."
"IMPROVEMENTS IN
The object of this Invention is to dispense with the necessity of unscrewing and
rescrewing the presser at every cut, and to enable the presser to be so adjusted as
that similar thicknesses of paper may be introduced and withdrawn from the
machine without touching the weighted or other mechanical levers employed for
actuating the screws.
Now this Invention consists in the application of a motion for raising and lowering
the cross head and presser the required distance for introducing and withdrawing
the paper by one instantaneous action, one modification of this Invention consisting
of a shaft suitably disposed beneath the table, and having at each extremity a crank
connected by a connecting rod to a stud projecting from the cross head, this shaft
being actuated by a lever being designed to pull down the cross head and presser
on to the dead centre of the cranks to put on the requisite pressure when the cut is
being performed, and to release the same immediately the knife commences to rise
again.
It will be obvious that a similar motion could be produced by eccentrics, quick
threaded screw or screws, or other equivalent mechanical means.
In accordance with this Invention the presser is raised, and the paper drawn
forward and repressed during the fall and rise of the knife, which may thus be
allowed to go on working continuously.
Af

page_text: SPECIFICATION in pursuance of the conditions of the Lotters Patent filed by
the said William Crosland in the Great Seal Patent Office. on the 21st June
1878.
WILLIAM CROSLAND, of the City of Manchester, Machinist. " IMPROVEMENTS IN
OR APPLICABLE TO PAPER-CUTTING MACHINERY.'
"
The object of this Invention is to dispense with the necessity of unscrowing and
rescrewing the presser at every cut, and to enable the presser to be so adjusted as
that similar thicknesses of paper may be introduced and withdrawn from the
machine without touching the weighted or other mechanical lovers employed for
actuating the screws.
Now this Invention consists in the application of a motion for raising and lowering
the cross head and pressor the required distance for 'introducing and withdrawing
the paper by one instantaneous action.
And in order that this my said Invention may be the more readily understood
and carried into practical effect I have hereunto annexed a Drawing of a paper-
cutting machine with my improvements applied thereto, Fig. 1 being a front, and
Fig. 2 a side view of the same, drawn to a scale of about one inch to the foot.
In both views the same letters of reference are used to indicate similar parts.
A, A, are the usual cast-iron sides of the framework, and B the table for receiving
the paper C requiring to be cut. The presser D is suspended from the cross head E
by. the adjusting screws D' geared together by the bevil wheel D3, and actuated
simultaneously by the weighted lever D in the ordinary manner.
In accordance with this Invention the cross head'E'is not affixeded rigidly to the
Bides A as hitherto, but is capable of moving up and down in slots formed in
each of such sides. Fis-a-shaft suitably. disposed beneath the table, and projecting
through the sides A to the outside, where at oach extremity a crank G is affixed
upon such shaft, the pins of such cranks being connected by connecting rods H to
studs I projecting from each extremity of the cross-head E: J is a lever, also affixed
upon the shaft F, and by means of which the cross head E and presser D may be
pulled down (owing to the action of the cranks and connecting rods) on to or nearly
on to the dead centre of the cranks, and thus put 'the requisite pressure upon the
paper whilst the cut is being performed, such pressure being relieved immediately
the knife commences to rise again by raising the lever J to the position indicated by
the dotted lines, and which latter operation may be assisted by counterbalancing the
weight of the cross head and presser.
In some cases I lock the lever J in the highest position by means of a suitable
catch..
It will be obvious that a similar motion could be produced by eccentrics, quick
threaded screw or screws, or other equivalent mechanical means.
In accordance with this Invention the presser is. raised, and the paper drawn 4
forward and repressed during the fall and rise of the knife, and which knife may
thus be allowed to go on working continuously.
It will be further apparent that this combination of mechanism is applicable to
new and existing paper-cutting machines, and constitutes a rapid and effective means
of putting the requisite pressure upon the paper being cut, and that where paper of 4
about the same thickness is required!to be operated upon a machine may be con-
structed upon the principle of this Invention without screw or other adjustments.
Having thus particularly 'described and ascertained the nature of this my said
Invention, together with the best methods with which I am acquainted for carrying
the same into practical effect, I wish it to be understood that I do not confine 5
myself to the precise details, relative proportions, or dimensions of the various parts
of the paper-cutting machine herein-before described, and illustrated on the accom-
panying Drawing, as the same may be considerably varied without departing from
the Invention, and that I claim.—
C. #

page_text: 1st. Mounting the cross head and presser in paper cutting machines, and the
application thereto of a shaft, cranks, and connecting rods or their equivalents, as
and for the purpose herein-before described, and illustrated on the accompanying
Drawing.
2nd. As applied to paper-cutting machines the method of applying the requisite
pressure, whether with or without screw or other adjustments, substantially as
herein-before described, and illustrated on the accompanying Drawing.
In witness whereof, I, the said William Crosland, have hereunto set my hand
and seal, this Twentieth day of June, in the year of our Lord One thousand
eight hundred and seventy-eight.
WILLIAM CROSLAND. (LS.)