US1751293A - Cutting device - Google Patents

Description

March 18, 1930. H. w. 'SHERMAN CUTTING DEVICE Filed June 30, 1927 2 Sheets-Sheet 1 INVENTOR fla/*old M /ZF/IZUJL ATTORNEY C l W\ /rm Y W M 9 2 l. W j a j March 18, 1930. H.. w. SHERMAN CUTTING DEVICE .'Filed June 30, 1927 2 Sheets-Sheet 2.

Patented Mar. 18, 1930 HAROLD W. SHERMAN, OF -GREEN .BAY, `WISCONSJN' CUTTING DEVICE Application sied June so,

This invention relates to improvements in cutting. devices generally,1 and more particularly to a type of such device to be employed in. connection with chines .and the like.

LThe principal .object ofthe invention is to provide for a cutting device adapted to be employed as. an attachment to paper tube forming or other kindred .types of machines,

-predetermined uniform lengths as the prod- :uct isy delivered from the forming mechanism thereof.

Anotheriobject of theinvention is to pro-v.

- .vide for. a cutting mechanism as hereinbefore characterized, and one of a mechanically re-zaiined. construction .and arrangement of parts,

.-which, in:its.-particular adaptation, is `to .be

easily .andt readily mounted in position ad- .'jacent` to or -directly on the .base or bed of a paper tubei formingl machine, wherebyito cut the tubing, inl its.y passage ifromtheimachine,`

; into suitable uniform lengthsl to` form cores for: toilet .paper rolls. c

. A further object of theinventioir is to pro-V vide forca. cutter.` ofthe classset'forth, and one of. an extremely simplified construction :and arrangement whereby .the lcutting eleamanner notf'requiring'the dismounting ofof operation.

lmentsandth'eir supports are interchangeable andotherwise adapted to be displaced from',

.and remounted :into operativeA positions for lquick repairfand replacement of parts and in the'cutter, in' its entirety, :from its position With theforegoingvand otherA objects in view, the invention'resides in the'certainnew and .useful combination, construction and ar rangement, of parts as wlllbe hereinafter more fully describedfset forth .in the appended claims; .and illustrated; in the. accompanying drawing,` in which:` l

.f Figure 1 is a'fragmentaryiperspective view of aconventionalzfor'm of; paper tube forminggmachine, showing. apractical applica- `tion ofthe cutting device. thereto,

`"lligurev 2 ist a vertical trans-verse .section through the device per se, with thepaper tube 'forming machinein .ond `elevation,

paper tube forming maf and to be operative therewith to automatically cutthe product of such a machiney intov 1927. Y serial No.- ecaets; y

` 1 Figurel 3ds a slightlyenlargedperspective viewfof one ofthe cutter'um'ts of the .device,

.operatively positionedr on the base `or. bed` of the said machine, and Y 1F igure 5`is a fragmentaryplan View of a section of the paper tubing andthe Apresser belt/mechanism cooperative therewith to effeet-,fthe :adhesion of the .cemented spiral pa- `peristrips forming the tube section.

l Referring tothe drawing-wherein similar vcharacters of reference designate corre/sponding. parts throughoutthe several views thereof, the preferredfembodiment of the cutting device, as shown,: comprises a substantially circularbodyordisc 10, having a centrally disposed andA oppositely offset hub .portion 11,.which isukeyed on a'shaft 12. "The shaft 12-.is journalled at the. opposite endsrof the hub V11 .in splitA bearings 13; andffl' carried .Figure 41is a side elevation of the device as Y atthe upper. ends ofthe supporting brackets or lstandards 14 and 14.

` These supporting brackets or standards 14 and 14', are formed e to` provide angularly offsetshoulder portions -15 Vand l5irespectively, atftheir innerI sides and spaced yupwardly from theirlower. ends,

whereby, with the/shouldered portions" 15 and 15 engaged over and resting on the .adjacent .l

`-iend lportions a and a of thel base or bed b" ofthe paper tube forming machine, the lower end portions thereof, depending below the horizontal planesof'the lower faces of the Avoffset shoulder. portions l5. .and 15, will abut the opposed end faces of the base or bed porf' f tions a. and a. in a manner to cooperate with the shoulders inv effectively :supporting the :cuttenbody 10.-in'its operative position, and. .practically free from .vibration iduring its rotation with theishaft 11. The lowerv end portions of the supporting brackets or stand.-

ards -14 and 14" are to be detachably secured in abutted relation. against the end faces of the base or bed portions a and fa respectively, ofthe paperft'ubemachinabymeans of the boltsorscrews 16, whilethefshouldered portions 15 and 15 are similarly secured to the` top"faces ofthe base or bed portions a andaiby means ofthe bolts or screws V17.A

Thebearings 14 and 114*Y each :havethr: 11p-- respectively.

' and 22. n rare substantially U-shape in sidev elevation,

19 of a slightly reduced width with respectthereto. Offsetv laterally and vertically from l the connected ends of the leg portions 19 and 19 are pairs ofspaced ears or lugs' 20 and These pairs of ears or lugs 20 and 20 are each formed to provide aligned apertures to journal therein the opposite ends of shafts or spindles 21 and 21 on the medial portions of which, between thecomplemental ears or lugs, are keyed thecircular cutters 22 The brackets, as thus `constructed and may be of one piece metal castings suitably'machined to desired proportions and finish. l Y

In assembling the cutter units, as thus constructed and arranged, on the cutter body or disc 10, the, same are to be engaged over the `faces 10',

the number of which will determine the num- fv standards 14 and 14 secured in position on the base or bed portions a and af of the paper tube making rplained, one'end of the shaft 12 will be eX- tended outwardly ofone of the bearings 13 or 13', .and have a drivingelement 24 keyed opposite sides of the Y necting portions 'p and 19',

provided with aligned apertures 19a (Figure 5 3), which are to be aligned with a compleperipheral edge thereof, with the leg portions 19 and 19 extending radially upward at'the same, and with the con- 19 seated on the peripheral substantially as shown. The legs 19 of each of the cutter brackets, are

edge,

mental aperture formed in the cutter body or disc 10, Vfor the engagement therewith of the' securing bolts 23. The peripheral edge of the cutter bodyv or disc 10 is preferably formed'to provide for a vseries of chordal surone merging into the other, and

ber of cutter units'to be employed with a cutter body or disc of varying diameters. f-

VWith the cutter assembly mounted on the shaft 12, and the supporting brackets 0r machine, as hereinbefore VAeX- thereon and operativelyconnected to a driven part of the actuating mechanism of the pa per tube machine. In the present instance, lthe extended end of the shaft 12 is projected outwardly from the bearing 13 and the driv-v ing element 24 keyed thereon is in the form of a toothed gear which isdisposed `in mesh- 'l ing engagement witha driven gear 0 of the power transmitting mechanism ofthe paper .tube machine.v

In the operation of the cutting device, when .thus mounted in position onthe paper tube machine, the cutter body or disc '10 will be supported in the vertical plane defined by the line of horizontaltravel of the paper tubing Z as it is delivered from the forming mechanism c, and at a height, above the base or bed portions a and a, so that the pairs of cutters 22 and 22, as they successively approach the high point in the peripheral travel Y of the cutter body or disc 10, whenthe latter is kbeing rotated, will engage Vthe lower'side of the paper tubing and from .the point of movement or contactftherewith will initiate the severing operation thereon, which operation will continue and be completed before the cuttersare carried in a downward direction :at the opposite side of the high point of peripheral .travel of the same during the continued rotation of the cutter body or disc 10. In its passage into engagement with and betweenfthe pairs of cutters 22 and 22', from the forming mechanism e of the tube making machine, the tubing is subjected to a downwardly directed. pressure exerted 'thereon by the VVdevices f and f', so that the outer end por-L tion of the same, as it passes between fthe pairs of cutters 22 and 22,.is forced lirmly against the cuttingedges of the latter and suiciently so as to cause the cutters to be rotated therewith for the desiredsevering operation. VVith the cutting units arranged in proper equidistantly spaced yrelation around Y the periphery of the body or'disc 10, the tubing d will be severed in predetermined lengths defined by the distance between the cutting edges of the pairs-of'adjacent cutters of the several cutter units. To -eifect the proper andelficient cutting of the tubing, the

ratio of thegear c, of thetube forming'machine, and the gear 24,'of thecutting mechanism, must be such that the peripheral speed of the cutting points on the pairs of cutters 22 and 22', on the cutter body-:or disc V10, Vis equal to that of thetubing, itfbeing understood that the tubing Z 'is'constantly rotated by revolving shaft g (Figure 2) along which it travels in its Vpassage from the forming mechanism. f w Without further description, it is thought that the features and advantages of theinventionwill be readily apparent to ,thosev skilled in the art, and it .will of course be understood that changes'in the form, proportion and minor details ofconstruction may be resorted to,- withoutdeparting from the spirit of the invention 'or its scope as claimed.V

AI-Iaving thus4 vfully described the invention what is claimed is:V

1.1A rotary cutter comprising a disc-like body having its peripheral edge of polygonal Y Y* 0f said members.

2. Arotarylcutter comprising a substantially circular body, substantially U-shaped brackets straddled over the peripheral edge of said body and having portions projecting beyond the latter, and pairs of transversely arranged cutters journaled in the outer ends of said brackets.

3. A rotary cutter comprising a disc-like body having its peripheral edge of polygonal form, substantially U-shaped brackets straddled over the peripheral edge of said body and sea-ted on the polygonal faces thereof, said brackets having enlarged portions eX- tending beyond the vperipheral edge of said body and each transversely bifurcated, and a rotary cutter journaled in the bifurcation of each of the enlarged portions of said brackets.

4. A rotary cutter comprising a disk-like body having its peripheral edge of polygonal form, substantially U-shaped brackets strade dled over the peripheral edge of said body and seated on the transverse centers `of the polygonal faces thereof, said brackets having oppositely disposed enlarged portions at the outer ends thereof and extending beyond the f peripheral edge of said body, each of said enlarged portions being transversely bifurcated, and a rotary cutter journalled in each of the bifurcations of the enlarged portions of said brackets.

HAROLD W. SHERMAN.

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