Improvements in Machines for Cutting Paper and like Materials.
Year: 1894

page_text: Date of Application, 1st Feb., 1894
Complete Specification Left, 26th Oct., 1894-Accepted, 1st Dec., 1894
PROVISIONAL SPECIFICATION.
Improvements in Machines for Cutting Paper and like Materials.
I, WILLIAM THOMAS MOORE DOBSON, of 23 The Avenue, Hornsey, in the
County of Middlesex, Cigarette Paper Merchant, do hereby declare the nature of
this invention to be as follows :-
My invention relates to improvements in machines for cutting paper and like
materials, and it has for its object to ensure the steady movement of the gauge cr
back fence and prevent it getting out of parallel with the knife, and also to reduce
the friction of the gauge or fence on the table, and thereby to facilitate the
movement of the said gauge or fence.
According to one arrangement I form downwardly depending flanges along the
edges of the slot commonly found in the table of paper cutting machines, and these
flanges are grooved to form paths for antifriction balls or rollers carried by the
plough or nut, by which movement is transmitted to the gauge or fence. To the
upper part of the plough is secured a box or casing in which the balls are held in
place by strips and set screws, whereby they can be adjusted so as to allow free
movement of the balls along the grooves. Suitable bolts or pins, screwed into the
upper part of the plough, pass through the slot, or slots, in the table and carry
antifriction trucks or bowls which fit between the edges of the slot or slots.
Antifriction balls or rollers, arranged similarly to those above mentioned, are
provided in the lower part of the gauge or fence, being held in place by strips
and set screws. These balls or rollers project slightly on the underside of the
fence or gauge and bear on the surface of the table, thereby keeping their two
surfaces from contact and reducing friction.
According to another arrangement, suitable more particularly for large machines,
antifriction rollers or trucks carried by the gauge or fence (it may be at each
corner thereof) work in contact with the outer planed edges of the table or tables,
thereby preserving the fence parallel in its movement in the table with the knife
bar. This arrangement may be used in combination with that just described.
In large sized machines, three traversing screws may be employed, one in the
centre and one on each side, these being geared by a chain passing over a sprocket
wheel on each of them. A tightening roller or truck may be arranged to keep
the chain taut.
Dated this 1st day of February 1894

page_text: COMPLETE SPECIFICATION.
Improvements in Machines for Cutting Paper and like Materials.
I, WILLIAM THOMAS MOORE DOBSON, of 23 The Avenue, Hornsey, in the
County of Middlesex, Cigarette Paper Merchant, 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, reference being had
to the accompanying drawings and to the letters and figures marked thereon, that
is to say:
My invention relates to improvements in machines for cutting paper and like
materials, and it has for its object to ensure the steady movement of the gauge or
back fence, and prevent it getting out of parallel with the knife, and also to reduce
the friction of the gauge or fence on the table, and thereby to facilitate the
movement of said gauge or fence.
In carrying out my invention, and according to one arrangement, I form
downwardly depending flanges along the edges of the slot commonly found in the
table of paper cutting machines, and I groove these flanges to form paths for
antifriction balls or rollers carried by the plough or nut, by which movement is
transmitted to the gauge or fence. To the upper part of the plough, is secured a
box or casing in which the balls are held in place by strips and set screws, whereby
they can be adjusted so as to allow free movement of the balls along the grooves.
Suitable bolts or pins, screwed into the upper part of the plough, pass through the
slot, or slots, in the table, and carry antifriction trucks or bowls which fit between
the edges of the slot, or slots. Antifriction balls or rollers, arranged similarly to
those above mentioned, are provided in the lower part of the gauge or fence, and
are held in place by strips and set screws. These balls or rollers project slightly
on the under side of the fence or gauge and bear on the surface of the table,
thereby keeping their two surfaces from contact, and reducing friction.
According to another arrangement, suitable more particularly for large machines,
antifriction roliers or trucks, carried by the gauge or fence, (it may be at each
corner thereof) work in contact with the outer planed edges of the table, or tables,
thereby preserving the fence parallel in its movement on the table with the knife
bar. This arrangement may be used in combination with that just described.
In large sized machines, two traversing screws may be employed, one on each
side, these being geared by a chain passing over a sprocket wheel on each of them.
A tightening roller or truck may be arranged to keep the chain taut.
And in order that my invention may be readily understood, I will describe the
same fully with reference to the accompanying drawings in which:
Fig. 1, is a side view shewing the upper portion of a guillotine paper cutting
machine provided with my improvements.
Fig. 2 is a vertical section, through the gauge or fence thereof, on the line x, x,
of Fig. 1, and
Fig. 3 is a plan of the said gauge or fence.
a represents the frame of the machine, 6 the knife bar, and 6 the guillotine or
knife; c represents the front portion of the table, termed the front table, and d the
rear portion thereof, termed the back table, this latter being formed in two parts
separated by a slot or gap d¹. e is the gauge or fence which is mounted upon the
back table and is capable of adjustment thereon relatively to the knife or guillotine,
by means of the traversing screw farranged beneath the slot d', and operated by
means of a hand-wheel f' in the ordinary manner. 9 is the plough or nut which
is secured to the gauge or fence and serves to transmit movement thereto from
the traversing screw. To the upper part of this plough is secured the box or
casing g', in which are arranged the antifriction balls h. These balls are held in
place by the strips which can be adjusted, as desired, by the set screws h², to
permit free movement of the balls.

page_text: d², d², are the downwardly projecting flanges which are formed on the back table d
along the edges of the slot or gap d', and d³ are the grooves in these flanges which
form the paths for the antifriction balls h.
i, i, are the bolts or pins which are screwed into the upper part of the plough
or nut g, and which pass through the slot or gap d'. At their upper ends, they
pass through the gauge or fence and are secured therein by nuts i, i, by which a
rigid connection is effected between the said plough or nut and the gauge or fence.
are the antifriction trucks or bowls with which these. bolts or pins are
provided, and which fit between the flanges d², so that they prevent lateral
movement when adjusting the gauge or fence.
j, j are the antifriction balls which are provided in the lower part of the gauge
or fence, whose under surface they serve to keep out of contact with the top of
the table a, thereby greatly reducing the friction and facilitating the adjustment."
are the strips by which these balls are held in place, and 2 are the set screws
which serve for the adjustment of the said strips.
The machine illustrated being of somewhat large size has its gauge or fence
provided at each corner with the antifriction bowls or trucks k, the outer edges of
the table being planed for these trucks to bear against. The said trucks are
mounted on axles k¹ which pass through, and are rigidly secured in lugs e¹ on the
gauge or fence, and in each lug a set screw e² may be arranged, in order to
facilitate the adjustment of the axles of the bowls or trucks k and to compensate
for wear thereof.
By these arrangements, I am enabled to ensure the steady movement of the
gauge or fence and prevent it getting out of parallel with the knife or guillotine,
and also to reduce the friction to a minimum.
In some instances, instead of the antifriction balls h, carried by the plough,
I may employ trucks or rollers adapted to bear against the downwardly depending
flanges d' and having their axles or pivots mounted in adjustable pieces corresponding
to the strips h¹.
Referring now to Fig. 4, which is drawn to a smaller scale than the other
figures, this shews, in end elevation, the arrangement I adopt for using two
traversing screws, as in large sized machines, only those parts being shewn which
are necessary for the description of the arrangement.
In this figure, 1 and n represent the two traversing screws which are respectively
provided with sprocket or chain wheels ', n', over which the chain o passes.
Motion is imparted to the chain by a central sprocket wheel m by means of the
hand wheel m¹, and is transmitted to the screws by means of the said chain and
sprocket wheels. p represents the tightening roller or truck for keeping the
chain o taut. This roller or truck is carried at the outer end of a bent lever p',
pivotted at p², whose other extremity works over a curved slot p³, and is provided
with any suitable clamping device to engage in this slot and hold the lever p¹ in
any position to which it may be adjusted to cause the roller p to exert the proper
pressure on the chain o.
Having now described and ascertained the nature of my invention and in what
manner the same may be performed I declare that what I claim is,
1. In a machine for cutting paper and like materials, the combination with the
gauge or fence, of the plough connected thereto by bolts having trucks or bowls
fitting the slot or gap of the bed of the machine, the said plough carrying anti-
friction balls (h), or rollers, adapted to bear against flanges depending downwardly
along the edges of said slot or gap, substantially as described and shewn with
reference to Figs. 1, 2 and 3 of the drawings.
2. In a machine for cutting paper and like materials, the combination of
antifriction balls j in the lower part of the gauge or fence, with the antifriction
bowls or trucks k at the corners of such gauge or fence, substantially as described
and shewn with reference to Figs. 1, 2, and 3 of the drawings.
3. In a machine for cutting paper and like materials, the arrangement of two

page_text: traversing screws, each having a sprocket wheel engaging a common driving
chain, in combination with a tightening truck or roller for taking up the slack
of said chain, substantially as described with reference to Fig. 4 of the drawings.
4. My improvements in machines for cutting paper and like materials, whereby
I ensure the steady movement of the gauge or back fence and prevent it getting
out of parallel with the knife, and also reduce the friction of the gauge or fence
on the table and facilitate its movement, substantially as hereinbefore described
and as shewn with reference to the accompanying drawings.
Dated this 26th day of October 1894.
ERNEST DE PASS,
Chartered Patent Agent,
78, Fleet Street, London, and 6, Victoria Street, Nottingham,
Agent for the Applicant.