US1447885A - Machine for cutting paper, cardboard, and the like - Google Patents

Description

Mar. 6, 1923. v H. J. POOLE MACHINE FOR CUTTING PAPER, CARDBOARD, AND. THE LIKE Filed Feb. 14, 1921 s sheets-sheet 1 flaen Z07 :2 Foo a Man-6,1923. 1,447,8 5

H. J. POOLE MACHINE FOR CUTTING PAPER, CARDBOARD, AND THE LIKE Filed Feb. 14, 1921 5 sheets-sheet 2 ILTJ I Y, Z V Iii/I /1 ////r/ )4 r A f I (ZiPaak Mar. 6, 1923. v 1,447,885

. H. J. PG'OLE MACHINE FOR CUTTING PAPER, CARDBOARD, AND THE LIKE FiledFeb. 14, 1921 3 sheets-sheet 5 4L AZZ f a/vefg Patented Mar. 6, 1923.

N OFFFC E HENRY JEFFREY POOLE, OF LONDON, ENGLAND.

Application filed February 14, 1921. SerialNo; 444,812

To all wit-omit may concern:

lie it known that I, HENRY JEFFREY Poona, a subjectof the King of Great Britain, residing in London, England, have invented certain new and useful Improvements in Machines for Cutting Paper, \ardboard, and. the like, of which the following is a specification. i

This invention relates; to machines for notching cardboard blanks, as for example in performing one of the first operations on cardboard blanks in the manufacture of cardboard boxes and-box lids,-viz, cutting out the. four corners of the rectangular blank, but the invention maybe applied to the cutting or note-hing of thin materials generally in one or more sheets at a time, according to the thickness of'the material.- In any case the excision ofthe four corners or the formation of the notches of whatever shape in the blank is performed in two operations of the machinejhalf-of the notches being m'ade'in'one! operation and the other half after reversal of the blank in the machine, by means of vertically reciprocating cutting or notching devices in. conjunction with a corresponding number of fixed cooperating devices.

In the improved machine constituting the present invention provision is: made for the relative adjustment not only of the. inclividual blades of each pair which cooperate to cut a notch, but also for the relative lateral adjustment of each pair of reciprocating blades and the associated pair of fixed blades, and of each set of reciprocating blades and associated fixed blades jointly with respect to the other sets of blades in the machine.

The invention will be more particularly described with. reference to the accompanying drawings, wherein Fig. 1 is a. front elevation of an apparatus embodying the invention adapted to make two rectangular excisions from the corners of a blank at each operation; Fig. 2 is a transverse. section; Fig. 3 a horizontal section through one of the guillotines; Fig. 4 a plan View of the fixed cutting device cooperating with a guillotine; Fig. 5 a. part vertical section shewing a modified construction of a reciprocating and cooperating fixed cutting device; Fig. 6 a plan view of the latter; and Figs. 711 are partial plans of blanks showing various kinds of notches and excisions which may be made with the apparatus.

Referring firstto Figs. 1-4, the two vertically reciprocating blade carriers or guillotines a, have each two blades" 72, c disposed at right angles to'ea'ch other and each adustable laterally, i. e. horizontally in the plane of the blades,'being secured in position on the guillotine by" keep plates d and set screws cl. The guillotines areguided for vertlcal movement in guideways e which are capable of relative lateral adjustment, as

for example by being'laterally slidable' on vertical frames or standards 6 to'which they are secured'by studs etpassingthrotigh horizontal slots in the standards 6 andengagmg the guideser One or both of the standards e may also b e' mounted'to slide sidewise 1n abed plate 7. The guillotines are actuated bythe engagement of'rol'lers with cams IYLQOII- the driving'sh'afft "of the machine, one of which is shown as being of extra width soas to remain in engagement with the cooperating roller over the full range'of relative lateral adjustme'nt ofthe guillotines'. Alternatively the cams may be axially adj ustable along the driving shaft or a single cam of sufiicient peripheral width may be used. The guillotines which are depressed by the cams to bring the cutting devices into action are raised by means: of springs such as i accommodated in suitable recesses in the frames and reacting on the guillotines.

The individual blades 7' of each pair of fixed blades are bevelled for cooperation with guideways 7c, is, of which is act also as clamps for the blades, being secured by set screws 70 to the bases of the frames 0. The blades 7' are horizontally adjustable in directions at right angles to their cutting edges and therefore relatively to each other in their guide ways, the limit of adjustment of one of them being determined by its abutment with the other.

An adjustable stop Z on the bedplate 7 determines the depth of cut from front to rear and a laterally adjustable stop m which also serves as a feed guide determines the width of the cut sidewise the blank being inserted from the front of the machine with its left edge abutting on guide m (Fig. 1). A finger guard a extends along the front of the machine, which may be treadle-operated or power driven.

It will be understood that the character and shape of the cutting devices will depend upon the character of the notch or cut to be made. Thus, the plain rectangular notches in the corners of the blank shown in Fig. 7 are made by two straight blades set to enclose a right angle. Each of the notches shown in Fig. 10 is made by a similar pair of straight blades, but one of them has a. tapering extension Z) (indicated in dotted lines in Fig. extending beyond the plane of its fellow blade 0, one of the cooperating fixed blades being chamtered at its front end as indicated by the dotted line in Fig. to leave a gap corresponding with the blade extension 7).

Also the blades, although straight edged, may be set at other angles than a. right angle as for cutting the small corner notches in the blank of Fig. 9, or they may be curved or gouge-shaped to cut the curved corner notches in the blank of Fig. 9.

In the modified construction of Figs, 5 and 6 the. cooperating cutting devices are more of the character of a male and female die, the former 0 being removably secured in the guillotine a, and the latter 2) being removably secured over an aperture q in the base of the frame and being adjustable later ally and as viewed in Figs. 5 and 6 by slacking and setting up the clamping screws 7), and fore and aft by sliding the die between the guides 29 before setting up the clamping screws, so as to bring it into register with the male die 0. Such a modification would be suitable for making the square notches shown in the edge of the blank in Fig. 8 or (with suitably dimensioned dies) rectangular notches or slots such as shown in Fig. 11.

In every case the notching which can be performed by a machine without change or readjustment of the cutting devices is eftected in two operations between which the blank is reversed in position, the second set of notches being thus a symmetrically disposed repetition of the first set.

Having thus described the nature of the said invention and the best means I know of carrying the same into practical e-llect, I claim A machine for cutting cardboard blanks and other thin sheets by the cooperation of reciprocating and fixed cutting devices, comprising two pairs of reciprocating blades and two pairs of fixed blades cooperating with the respective pairs of reciprocating blades, means for adjusting one-set of reciprocating blades with its cooperating fixed blades laterally relatively to the other. sets of blades, means for adjusting each pair of fixed blades relatively to the cooperating pair of reciprocating blades, andmeans for adjusting the individual blades reciprocating and fixed, relatively to each other.

In testimony whereof I have signed my name to this specification.

HENRY JEFFREY POOLE.

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