for Use in Connection with Paper-making Machinery.
Year: 1888

page_text: Date of Application, 23rd Oct., 1888
Specification Accepted, 23rd Nov., 1888
for Use in Connection with Paper-making Machinery.
1, HENRY HARRIS LAKE, of the firm of Haseltine, Lake & Co., Patent Agents,
Southampton Buildings in the County of Middlesex do hereby declare the nature
of the said invention and in what inanner the same is to be performed to be
particularly described and ascertained in and by the following statement :-
My Invention relates especially to mechanism to be attached to and to operate in
connection with paper making machines, for slitting the web of paper after leaving
the driers into strips of any desired width, although certain features thereof are
applicable to paper cutting machines generally.
The object of the invention is to provide novel means for supporting and adjusting
the cutters whereby a shear cutting movement between the upper and lower cutters
can be secured and wear of the cutting edges compensated for, and also to provide
means for guiding the paper to the cutters in such manner that it will be presented
evenly thereto at the edges as well as at the center thereof.
To these ends my invention consists in the machine hereinafter fully described and
particularly pointed out in the claims.
Referring to the drawing in which like letters designate like parts in the several
figures:
Figure 1 is a diagram illustrating the manner in which the web of paper is passed
between the rotary cutters.
Figure 2 is a perspective view of the machine.
Figure 3 is a similar view of a portion of the presser roll and its bearings.
Figure 4 is a vertical sectional view of one of the pairs of cutters and their
supporting and adjusting devices.
Figures 5 to 8 inclusive are detail views of parts hereinafter described.
The letters A. A. designate a portion of the frame of a paper making machine
which, without further illustration, will be understood to be taken at a point
immediately in the rear of the driers. Secured to the upper part of said frame are
brackets B. B. which support the bar C. carrying the upper series of cutters, as
D077

page_text: hereinafter described. Mounted within bearings in or secured to the frame A. are
rolls E. F. G. H. the latter being one of the rolls carrying the felt by which the paper
is conducted through the driers and from which motion is transmitted to roll F. by
means of a belt f. as shown or in any other convenient manner.
The rolls F. G. which I will call the guide rolls, are located respectively in front
and rear of the cutters, their function being to guide the paper evenly, and in a
substantially horizontal plane, between the cutters. Provision is made for vertical
adjustment of said rolls F. and G. to compensate for wear of their bearings by means
which are illustrated in detail in Figure 7, said means consisting of blocks g² mounted
within slots in the bearings and supporting the journals ³ of the rolls, and
screws by means of which said blocks can be adjusted vertically within the slots.
1 am thus enabled to vertically adjust each roll independently and ensure the
proper guidance of the paper at all times.
The roll E. which I will call the presser roll, is preferably made of wood and with a
diameter increasing from its center toward each end as shown in Figure 3, its
function being to bear upon the web of paper, in front of the cutters, and counter-
act the tendency of said web to curl up at the edges, whereby I am enabled to
make a clean even cut, along both edges of the paper as well as through the central
portion thereof. The journals e. of said roll rest in the vertical grooves b of the
blocks P., see Figure 3, said blocks being rigidly secured to the frame A. by bolts
passing through hole a therein, or in other suitable manner. The blocks may also
be provided with a pin p at their upper end by which the journals of the roll will
be retained on the blocks when the roll is raised from its bearings for the purpose
of starting a web of paper through the machine. As thus mounted it will be noted
that the roll E. is free to move vertically within its bearings, and therefore to rest
by gravity upon the paper, bearing upon the latter, however, near its edges only, by
reason of the varying diameter of said roll.
The additional roll K. shown in Figure 2, which is journalled in the pivoted arms k
is the usual roll which guides the paper to the size box, and forms no part of my
invention.
·
The lower series of cutters M. are secured by screws I upon a shaft L. journalled
in bearings in the frame A, see in Figures 2 and 4.
Said cutters M. are of the ordinary disk form having square cutting edges m of
hardened steel.
As hereinbefore stated the upper series of cutters N. are supported by the bar C.
and in order to provide for adjusting said upper cutters both vertically and
horizontally with respect to the lower cutters, to compensate for wear of their
cutting edges, in addition to the individual adjustment of the upper cutters presently
to be described, said bar C. is made adjustible upon the frame as follows;
Said bar is secured at each end to standards D. which standards are provided with
vertical slots d³. Each of the brackets B. is provided with a horizontal slot d¹ and
bolts inserted through said slots and through the slots in the standards and
having nuts upon their inner ends, serve to hold the standards securely to the
brackets, while by loosening the nuts d', said standards and the bar C. can be adjusted
both horizontally and vertically with respect to the brackets.
In order to provide for very accurate vertical adjustment of the bar the standards D.
are each provided with a flange projecting over the brackets B. in which flanges are
seated adjusting screws d which bear upon the top of the brackets. I am thus enabled
by loosening nuts d and turning screws d to make a very delicato adjustment of the
bar C. at each of its ends.
Each of the upper cutters is mounted within an independent hanger n-see
Figure 4, which consists of two arms extending downwardly from a shank or stem n².
The stem n² extends upwardly through a central longitudinal slot c¹ in the bar C. and
is provided with screw-threads to receive a nut n above said bar and a set nut ✗.
below said bar, said nuts being preferably enlarged as shown for convenience in
turning them. In order to provide for a limited rotary adjustment of the stem n² I
prefer to flatten said stem upon two opposite sides as shown making its diameter

page_text: between said flattened sides slightly less than the width of the slot in bar C. while its
opposite diameter is or may be greater than the width of said slot. I also prefer to
interpose a bearing plate W. between nut and the upper surface of the bar to
prevent abrasion of the surface of the bar at the sides of the slot by said 'hut, said
bearing plate having the opening w corresponding in outline to the shape of the stem
in cross section, see Figure 5, and having the projecting lugs w¹ which enter grooves c
in bar C. to prevent rotary movement of said plate.
It will be observed that by loosening set nut X. cither of the hangers n¹ can be
adjusted longitudinally of bar C. independently of the others, and, furthermore, that
each hanger is capable of a limited vertical adjustment within the bar by the
co-operation of the two nuts n and X. in addition to their common vertical adjustment
with the bar as previously described.
By the longitudinal adjustment referred to provision is made for cutting the web of
paper into strips of various widths, the lower cutters being capable of a corresponding
adjustment by loosening their screws, and by the double vertical adjustment
provision is made for compensating for inequalities in the wear of the cutting edges
of the upper cutters, as well as for a common adjustment of all of said cutters as their
diameter is reduced by grinding.
Each of the upper cutters N. consists of a comparitively thin disk of hardened steel
secured by screws as shown or in other suitable manner to a hub R. see Figure 4.
As shown in Figure 6, the cutting edge of the disk is formed by grinding two
opposite bevels n³ and n¹ therein, whereby a very fine and at the same time durable
edge is secured.
The hub R. is centrally bored to receive a bearing pin S, and is counterbored as
shown to form a socket in which is located a spiral spring U which bears at one end
against the hub and at the other against a shoulder on the bearing pin, the function
of said spring being to normally press the cutting edge of the cutter N against the
cutting edge of the corresponding lower cutter as shown in Figure 4.
The bearing pin S. terminates at each end in a conical point, which conical ends
are received within conical sockets in the ends of bearing plugs T. seated within
the arms of the hanger and retained therein by set screws or in any convenient
manner.
The pins S. are thus adapted to revolve in their bearings with a minimum amount
of friction and wear.
In order to facilitate the lubrication of said conical bearings I provide the pin S.
with an oil ducts extending centrally through the pin which registers at each end
with the oil ducts t in the bearing plugs T. by which means the lubricant inserted in
either of the ducts will thoroughly lubricate the bearings at both ends of pin S,
while the pressure of the air at both ends of the ducts will prevent the escape of said
lubricant.
A lever V. mounted upon a pivot v within a slot in one of the arms of the banger
and having the arc-shaped head e is adapted by being raised in such manner that its
head is forced against the cutter N. to move said cutter upon the pin S. in
opposition to the stress of spring U. so that its cutting edge is separated from the
lower cutter, and to retain it in such retracted position until said lever is lowered
again.
Either of the upper cutters can thus be instantly thrown out of and into operative
engagement with its lower cutter.
I desire to call particular attention to the fact that by the slight rotary adjustment
of the stems n² of hangers n previously described, provision is made for setting the
upper cutters at a slight angle to the lower cutters whereby I am enabled to secure
a shear cutting movement between said cutters and thus avoid making the ragged
edge upon the paper which exisits when it is cut by cutters whose cutting edges are
parallel.
The operation of the machine will be obvious from the above description and by
reference to Figures 1 and 2 of the drawing.

page_text: The web of paper after passing through the driers is led over roll F, roll E. being
raised from its bearings to facilitate the operation, thence between the upper and
lower cutters which have been adjusted longitudinally of bar C. and shaft L. to make
the strips of the desired width, and the upper cutters being held out of contact with
the lower cutters by the levers V, thence over roll G, beneath roll K, and so on, to
the size box and succeeding parts of the paper making machine.
The levers V. are then lowered, permitting the springs U. to force the upper
against the lower cutters, roll E. is, dropped into its bearings, where it rests upon the
paper, and the machine is started.
The movement transmitted to.roll F..from the felt-roll H., exercises sufficient draft
upon the paper to prevent undue strain thereon when passing the cutters, while the
pressure exerted by roll E. at the edges of the web causes said edges to be presented
evenly to the cutters and enables the latter to sever the narrow strips o' of therefrom,
and leave a perfectly even edge to the strips o² o³.
As hereinbefore described, the necessary adjustments to adapt the machine to cut
different widths of paper can be quickly and conveniently made, as can also tho
adjustments to compensate for wear of the cutting edges of individual upper cutters,
or the common adjustment of all of said cutters to compensate for reduction in their
diameter by grinding &c.
The machine as thus constructed contains certain features, which are applicable to
paper cutting machines generally, and I therefore do not wish to limit myself to their
use in connection with a machine for making paper.
It is obvious also that various modifications in the details of construction shown
and described can be made without departing from the spirit of my invention.
Having now particularly described and ascertained the nature of my said invention,
and in what manner the same is to be performed, as communicated to me by my foreign
correspondent I declare that what I claim is :-
First. In a machine for cutting paper the combination with an upper and lower
series of rotary cutters of means substantially as described for independently adjusting
each of the cutters of one series both vertically and horizontally relatively to the
cutters of the other series, substantially as set forth.
Second. In a machine for cutting paper the combination with an upper and lower
series of rotary cutters of means substantially as set forth for independently adjusting
each of the cutters of one series relatively to the cutters of the other series in such
manner that their cutting edges will be at an acute angle to each other, substantially
as and for the purpose set forth.
Third. In a machine for cutting paper the combination with an upper and lower
series of cutters of means substantially as described for adjusting the cutters of
one series both collectively and individually in a vertical and also in a horizontal
direction with respect to the cutters of the other series, substantially as set forth.
Fourth. In a machine for cutting paper the combination with an upper and lower
series of rotary cutters, of a series of independent hangers each carrying one of
the upper series of cutters, an adjustable support for said hangers, and means
substantially as described for independently adjusting each of said hangers upon said
support, substantially as set forth.
.
Fifth. In a machine for cutting paper a series of rotary cutters adjustably secured
upon a shaft in combination with a vertically and horizontally adjustable bar
supported above said shaft, a series of hangers adjustably secured to said bar, and
a rotary cutter journalled in each of said hangers, substantially as set forth.
Sixth. In a machine for cutting paper a shaft having adjustably secured thereon a
series of rotary cutters, a bar adjustably supported above said shaft, a series of
hangers depending from said bar, a rotary cutter journalled in each of said hangers,
and means substantially as described, for independently adjusting each of said hangers
vertically and longitudinally upon said bar and also at an angle thereto, combined and
operating substantially as set forth.

page_text: Seventh. In a machine for cutting paper comprising a series of upper and lower
rotary cutters, guide rolls located both in front and rear of said cutters, and means
substantially as described for vertically adjusting each of said guide rolls, substantially
as set forth.
Eighth. In a machine for cutting paper comprising a series of upper and lower
rotary cutters and means for guiding a web of paper between said cutters, a presser
roll adapted to bear upon the paper in front of the cutters, said roll being of greater
diameter at the ends than in the middle whereby the edges of the web of paper are
presented evenly to the cutters, substantially as described.
Ninth. The combination with the frame A. and the felt-roll H, of a paper making
machine, of rolls F. G. and shaft L. journalled in said frame, said shaft carrying the
cutters M, bar C. adjustably secured to the frame, hangers n' adjustably secured to
said bar, cutters N. journalled in said hangers, and means for transmitting motion
from roll H. to roll F. arranged and operating substantially as described.
Tenth. The combination with frame A. having the brackets B. secured thereto, said
brackets being provided with horizontal slots 1, of standards D. having the vertical
slots d³, bolts d² passing through the slots in said brackets, adjusting screws d seated
in a flange in said standards and bearing upon the brackets, and bar C, secured to said
standards, substantially as set forth.
Eleventh. The combination with bar C. having grooves c in its upper surface and
having slot c¹, of the hangers n having stems n² inserted through said slot, nuts n
and upon said stem above and below the bar respectively, plate W. having the
opening w and lugs w¹ interposed between said nut nand the bar, and cutters N. journalled
in said hangers, substantially as set forth.
Twelfth. The combination with hangers n³ of cutters N. journalled therein, springs U
pressing said cutters laterally in one direction, and levers V. pivoted upon said hangers
and adapted to move said cutters laterally in the opposite direction, substantially as
and for the purpose set forth.
Thirteenth. The combination with hangers n¹ having the bearing plugs T. secured
thereto, said plugs being provided with conical sockets as shown, of hubs R,
bearing pins $. having conical ends seated in the sockets in said plugs, springs U
and cutters N. secured to said hubs, arranged and operating substantially as
described.
Fourteenth. The combination with hangers n¹ of bearing plugs T. secured thereto,
said plugs having conical sockets as shown and oil ducts t leading thereto, bearing
pins S. having conical ends seated in said bearing plugs and having an oil duct's
extending centrally therethrough, hubs R. mounted upon said pins, and cutters N.
secured to said hubs, substantially as described.
Fifteenth. The combination with the frame A. guide rolls F. and G. journalled
therein and cutters M. N, of roll E. mounted upon said frame, in front of the
cutters, in such manner as to have free vertical movement, said roll having a
gradually increasing diameter from its center toward both ends, substantially as and
for the purpose described.
Sixteenth. The combination with the series of rotary cutters M having square
cutting edges m, of slotted bar C. located above said cutters, hangers n¹ having their
stems inserted through the slot in said bar, disk cutters N. mounted in said bangers
and having the bevelled cutting edge n³n, and nuts n X. located upon said stems n³
above and below bar C. respectively, whereby said cutters N. can be set at an acute
angle to cutters M. substantially as and for the purpose described.
1000
HASELTINE, LAKE & Co.,
45, Southampton Buildings, London,
Agents for the Applicant.