US530780A - Machine for cornering box-blanks - Google Patents

Description

4 Sheets-Sheet 1.

(No Model.) A. L. KINGSBURY.

MACHINE FOR CORNERING BQX BLANKS.' No. 530,780. Patented 1366.711; 1894'.

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(No Model.) 4 sheets-'sheet 2.

A. L. KINGSBURY. MACHINE FOR GORNBRING BOX BLANKS.

No. 530,780. Patented Deo. l1, 1894.

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A. LJKINGSBURY.

MACHINE FOR G GRNBRING'BOX BLANKS. No. 530,780. Patented Dec.. 11, 1894'.

. 'llim I Wmme@ Y gnou/woz 3513 kal/bho I 1' E wams Para: uo., wom-uws.. wAsumauN n c (No Model.) 4 Sheets-Sheet 4. A. L. KINGSBURY. MACHINE FOR GORNEBING BOX BLANES.

` Patented Dec. 1.1, 1894.

WMM/Leones @zw am@ i5 blanks, previously cut to size, the operation l ends the said upper blades of the cutting l limitan STATES j PATENT Ormes.

ARTHUR L. KINGSBURY, OF N ORTHAMPTON, MASSACHUSETTS, ASSIGNOR OF TWO-THIRDS TO ADDTSON KINfGSBURY,. F SOUTH COVENTRY,.AND FRANK H. ALLEN, OF NORWICH, CONNECTICUT.

MACHIN E (FOR c o RNERi Nc sox-BLAN Ks.

S PECIFICAIIOAN formingjpart of Letters Patent No. 30,780,d1ated December 11, 1894.

g Applicata nealiprn 27,1894.

T0 all whom t may oon/cern: Be it known that I, ARTHUR L. KINGSBURY, a citizen of the United States, 'residing at Northampton, Hampshire county, "State v'of 5 Massachusetts, have invented certain new, and useful Improvements in Machines for Cornerng Box-Blanks, which improvements are fully set forth and described in the following specification, reference being had Vto 1o the accompanying four sheets of drawings.

The objectof this invention is to produce a machine the construction and mechanism of which shall be such that `the same,`under proper conditions, shall perform upon boxl of corner-ing.

Box blanks of the class with which -my machine is especially adapted to operate `are illustrated in FigureslO and 1l of the drawzo ings, which drawings are more fully 'described hereinafter.

In the manufacture of paper boxes, the blanks (usually of straw board) are first cutI to the required size and properly scm-ed,

z 5 after which they arecornered (being then in the condition inrwhich they are illustrated in said figures) when they are ready to be broken up and formed into boxes.

The style of blank-illustrated in Fig.

3o provides a box the bottom and sides ofwhich are composed of a` single piece y0f straw board and the ends of which are set on, while the style of blank illustrated in Fig. ll is used in the construction Yof box covers 3 5 or very shallow boxes, the same being composed of a single piece of straw board, the corners being stayed by wire'clips or strips of cloth or paper, as fully understood by those acquainted with the art of lbox making.

By reference to Figs. 10 and 1l it will beY noted that the corners in the two styles of` blanks shown are differentlycut in each blank and it is the aim of this invention lto produce a machine which shall be adjustable to permit of its cutting both styles of corn-ers illustrated and which shall also vhave a sufficient range of adjustment to accommodate blanks of all sizes ordinarily used and-which shall cut, within a certain range, any depth 5o of corners wished for. f

In the drawings, Fig. l is a side elevation ssriainmoazs. (Numan.)

of my machine. Fig. 21s an elevation of the back or rear side and Fig. 3 a plan'vie'w of the same. Fig. 4 is Va vertical, central sectional viewof the upper 'portion of my machine. Fig. `5 illustrates, principally in section, the meansprovided for 'adjusting horizontally (relative to each other) the corner cuttingknives'of my device. Fig. 6 is a plan view of 'a vertically 'movable carriage byo 4 means of which vertical reciprocating motion is imparted lto theupper blades of the corner er cutting knives just referred to. Fig. 7 is a vertical, central, sectional view showing one of certain verticahrods and connected parts, which rods support at Vtheir upper knives of `my device. Fig. 8 illustrates, in elevation, the several parts shown in Fig. 7 but shows changed somewhat the positions oif'severa'l of said parts. Fig. 9 is a plan View of an arm, two'of which are employed `to assist in supporting lthat end of the box blanks undergoing 4the operation of corner cutting and in which is located the lower blade of each knife andshows in dotted lines the manner in'` which's'aid arms are adjustable to cause the cutting knives to properly Operate vwith dierent styles of work. Figs. 10 and 1l areplan views of box blanks, properly scored, and illustrate the different styles vof corner lcutting which it is possible to accomplish with my machine.

My machine, when properly assembled,` consists of a stand or table, preferably of con'- siderable weight, upon the top or bed plate of which the box blanks are placed and fed to the corner cutting mechanism, which mechanism is located and supported adjacent to said bed plate. v

The reference letter A indicates the bed platejust referred to, which bed plate is su pported'by two end frames lettered B andCrelspec-tively. Frames B and C are tied together attheir lower `portions by'cross frames D and E in which cross frames are provided bearin-gsfor the main shaft F of 'my'devioe Shaft F has loosely located thereon a driving pulley G, driven bybelt G', saidvpulley beinglocked to lor released from shaft F, by means of a friction clutch H of any suitable style. Upon the end of shaft F is ixedly secured an eccen- IOO tric J, which latter, through its rod K, imparts motion to the corner cutting mechanism proper of my device, said eccentric being revolved by shaft F on which it is located as above explained, the shaft F being in turn revolved by pulley G when locked thereto by means of clutch H.

To shunt the clutch H on shaft F, to lock or release the same from pulley G, a lever M is centrally hinged as at N (midway the shaft and frame B) one end of which lever M is suitably connected to clutch H and the other end of said lever is pivotally connected to the end of a horizontal rod P, lying in bearings R, provided therefor in the lower portion of the side frame B. Should rod P be slid outward in its bearings, in the direction of the arrow in Fig. l, the end of lever M pivoted thereto will likewise be carried outward and the same, swinging on its pivot N, will cause its oppositeend to swing inward, thereby carrying with it the clutch II and leaving the pulley G free to run idly on shaft F. Should however rod P be slid in its bearings in the direction opposite to that of the arrow in Fig. l, said lever M will also be caused to rock in a direction opposite to that justdescribed, thereby locking the clutch and driving pulley and causing the latter to revolve on its shaft.

The following described mechanism'is provided whereby either hand or foot power, as may be desired, may be employed to operate the clutch H. Beneath the main shaft F, at right` angles thereto, and supported in bearings in frames B and C is a rock-shaft S, to which is xedly secureda foot-lever T. Shaft S extends through its bearings in frame B and bears upon its outer end an arm U the free end of which arm is slotted to receive a stud P located on rod P. By reference to Fig. lit will be seen that when the foot lever T is forced downward it rocks the shaft S, said shaft, through its arm U, causing the rod P to slide in its ways in the direction opposite to that of the arrow` in Fig. l and thus throw the clutch H into engagement with its pulley G, the various parts being then in the positions illustrated in Fig. l. As soon as pressure is removed from foot-lever T a spiral spring S encircling shaft S (Fig 2 at once causes said shaft and its connected foot lever T and arm U to rock in the opposite direction thus sliding rod P to release the clutch H from pulley G.

To operate clutch Il by hand a lever V is provided, hinged midway its length to the frame B the lower end of which lever is pivotally connected to rod P and the free end of which lies conveniently near bed plate A.

It will be seen by reference to Fig. 1 that, when the free end of lever V is forced into the position shown in said iigure, the rod R will have been caused to so slide in its bearings as to lockthe clutch H and pulley G and it will be as readily understood that, should said lever be drawn outward the clutch H will,

through rod P and lever M, be released from its pulley G. A suitable ratchet catch `W is provided on frame B to prevent the leverV, after having been forced backward, from being rocked, by the force of spring S. g

I have provided my machine with two methods for operating the clutch mechanism, as illustrated and described, but it will be seen that only one method is absolutely necessary.

When my machine is properly assembled and in operation the cutting knives proper of my device have a certain vertical reciprocating motion which motion is imparted thereto by means of eccentric J through its rod K, but I do not wish to be understood as conning myself to this particular manner of obtaining that motion, nor to the particular construction illustrated aud described of the table and its supporting frames, nor to the manner in which the several elements of the mechanism above described, consisting of main shaft, driving pulley and clutch and eccentric and connected parts, and the manner of controlling said clutch mechanism are assembled, said mechanism being simply illustrated and described as being a very desirable means for producing such reciprocating motion, and the manner which I preferably employ, but it is evident that other styles of stands or tables could be constructed and other means employed for producing the desired vertical movement with equally good results. y

Having now described the general construe` tion of the stand or table of my machine, the means provided for imparting motion to the corner cutting `mechanism above referred to and the means employed for controlling the driving mechanism, I will proceed to describe the corner cutting mechanism proper, which latter forms the essential feature of my uinvention.

Secured to the frames B--C at the rear side of my machine (the right hand as shown in Fig. 1) and about midway the height of the side frames, `are "V shaped vertical Ways a, in which is arranged to travel a carriage l) said carriage being pivotally connected midway its length, on its under side, to the upper end of eccentric rod K by which rod said carriage is actuated, the preferred shape of said ways and their relation relative to each other and the manner in which said carriage is caused to travel in its ways by motion imparted thereto from eccentric G, through its rod K, being clearly shown in Figs. l, 2, 4 and 6.

Carried by carriage b are two vertical rods c to the upperends of which are secured arms h which carry the upper cutting blades of the knives of my device, as hereinafter fully de scribed. The lower ends of rods care formed with enlarged heads c which, when my device is properly assembled, lie in an undercut groove b extending throughout the length of carriage b, said disks c being capable of longitudinal adjustment relative to each other in said groove b.

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' esoy/so l e Supported by frames B-C, somewhat above ways d and reaching entirely across the back side of my machine is a cross-frame d. The edges of frame d provide a horizontal track which supports two vertical shells or collars e, the same being supported by arms e located on said shells, which arms so engage track d as to support shells e thereon but still allow said shells to be moved freely toward or away from each other on track d, fora purpose hereinafter explained. This longitudinal movement of shells e is accomplished in the following mannerz-Each shell e is provided between its arms e with a projection e2 whichV projections, when the shells are in position onl the track, lie in a channel or undercut groove CZ extending throughout the length of cross frame d. Lying within this groove CZ. and passing through each projection e2 is a rod f formed with right and left hand threads, which, when assembled, are in engagement respectively with the threaded projections e2 of sleeves e. Rod f is preferably provided with a hand wheel f whereby it may be conveniently rotated and longitudinal displacement of said rod is prevented by 'means of a stud or pin d2 which engages the same near its central portion as shown in Fig. 2.

rlhe construction, location and the relative positions of the described track, sleeves, threaded rod and connected parts are clearly shown in Figs. 1, 2, 3, 4, 5, 7 and 8 and by spe-v cial reference to Figs. 2 and 5 it will be clearly understood that rotation of the threaded rod will cause the sleeves c to travel on track d either toward or away from each other in accordance with the direction of rotation of said rod.

Supported within shells e are what might be termed cylindrical guides g in which, when my machine is properly assembled and in operation, the rods c, already referred to slide. Guides g are prevented from slipping down through sleeves e by radial arms g` located at their upper portions, and it will be seen by reference to Figs. l and 3 that the upper face of each of said arms is flush with the top of the bed plate A of my machine.

I have already referred to certain arms (indicated by the letter h) supported on the upper ends of rods c, which arms bear upon their outer free ends the upper cutting'knives 7c of my machine, the shape of which is most clearly shown in Fig. 9. Openings g2 are provided in arms g to receive the upper cutting knives, aportion of the side wall of each opening being so constructed as to coact with each knife 7c to produce a shearing out.

The rods c are preferably square and the hole through guides g in which they slide is correspondingly shaped. With a guide and rod thus constructed it will be seen that the arms g and h will always be retained in the same vertical plane relative to each other.

In order that my machine may be successfully operated upon the two styles kof blanks illustrated in Figs. 10 and 1l itis necessary that a certain adjustment of guides g within sleeves e be provided in' order thatthe arms g and'h may be deflected from the position shown in full lines in the drawings to that shown indotted lines, or Vice versa. To make these adjustments guides g are rotated within sleeves e and when the desired position of the former is attained a suitable lock as a set screw e3, is provided in each sleeve adapted to enter holes g3 properly located in the guides g to receive the same, as most clearly shown in Figs. 5 and 7, from which'igures it will be seen that when the screws e2 are in place in guides g the latter are positively held against rotation in their respective sleeves.A

Assuming that the various parts of my machine thus far described are properly assembled it will be seen, first, that when the machine is in operation, carriage b is given a vertical reciprocating motion and that such motion Will be communicated through rods c sliding in guides g to the upper blades of the cutting knives; second, that through the threaded rod f actuating sleeves e, said sleeves and parts connected thereto may be caused to travel toward or away from each other, as the case may be, the disks c of rods c correspondingly traveling lin groove b of carriage b, and thirdly, by the manner in which the guides g and rods c are assembled within sleeves e the arms g and h of each pair may be swung in unison from a common center. The upper knife consists of two distinct cutting edges, located at right angles to each other as shown in the drawings and the lower blade is correspondingly shaped to coact therewith. Should arms g and h bearing said knives, be adjusted to the position shown in full lines in the drawings and should a box blank of the class shown in Fig. 10 be placed between the same (said box blank being fed thereto in the direction of the arrow of Fig. 9) it will be seen that, when the knife k descends, corners m, of the shape shown in said Fig. 10, will be cut in the said blank. Should however the knives be adjusted as shown in dotted lines in Figs. 3 and l9 and a blank of the class shown in Fig. 1l

fed thereto, in the same manner as just described, it will be seen that the knife le, upon descending, will cut out corners m of the class shown in said Fig. 11, the difference in the corners in said Figs. 10 and ll being readily-seen by reference tothe figures.

In the operation of corner cutting, several blanks properly piled up are fed forward to the knives and, to support that portion of said blanks between the knives, the bed-plate A is provided with a central projection Aon its rear side. A stop n is provided on said projection against which the blanks, being operated upon, abut, said stop being adjustable to regulate the depth of corners to be cut in the blanks. Stop n travels in a slot A2 the lower portion of said stop extending down through the slot. Said stop is operated by means of a rod o supported in bearings IOO IIO

Y beneath the plate A and provided at one end with a hand wheel o by which it may be easily rotated and at its opposite end with a screw thread which engages the lower portion of stop n.

Then it is desired to use the machine the stop it is so adjusted as to allow the blanks to be introduced between the blades of the knives the necessary distance to produce the desired depth of cut. A scale, as shown in Fig. 3, may be provided near the slot A2, whereby the proper adjustment of stop n to produce a desired depth of cut may be readily determined.

To avoid the trouble of nding on each blank, or pile of blanks introduced into the machine, the exact places at which the corner cutting shall be done I provide guides or ways 19 on the bed plate A between which the blanks are accurately introduced to the knives. These ways are of the form shown in Figs. l, 2, 3 and 4t and are adjustably secured to the table top by means of set screws t lying in slots t.

'When in use the guides are secured to the bed plate a distance apart equal to the length of blank to be operated upon and in such location on the said bed plate that those points on the blank at which the corners are to be cut, will be directly in alignment with the corner cutting knives so that when fed forward the blanks will at once find their proper places between said knives.

The ends of the guides p near the front ot the machine are preferably turned outward as shown whereby the blanks may be readily fed between the same.

Assuming` now that we have a complete machine constructed as described, the various parts properly assembled and adjusted relatively to each other (the knives `being set to eut the required style of corner) and that it is desired Vto operate the machine, the same is first set in motion in the manner already described. Several blanks properly piled up, are fed forward on the bed plate A between the guides p toward the knives, until the blanks abut the stop n which has previously been adjusted to obtain the required depth of cut. Then the blades 7o in their downward motion come in contact with the blanks they at once corner the same, when the blanks are removed and the reverse edge of the pile of blanks similarly introduced to the knives to be cornered My machine asa whole is not expensive to produce, is of simple construction and performs rapidly, and in an excellent manner, the operation of cornering this class of blanks.

Having described my invention, I claiml. In combination with a work supporting table, a reciprocatory support mounted thereon, a cutter upon the support located eccentrically to and movable parallel with the axis of the support, said cutter being movable relatively to the material upon table, with the support as a center of said movement, and means for reciprocating the support and cutter, substantially as set forth.

2. In combination with a work supporting table, a shell or collar secured thereto, a longitudinally movable rotary support within the shell, a cutter secured to the support eccentric to the axis thereof, and means for moving the support, substantially as set forth.

3. In combination with a work supporting table, a support thereon, a guide upon the support, an arm upon the support and an arm upon the guide, a cutter upon the arm of the support, and the arm of the guide being provided with an opening, and means for moving the support and for rotating it and the guide, substantially as set forth.

4. In combination with a Work supporting table, a sleeve carried thereby a guide in said sleeve provided with an angular longitudinal perforation, an angular support through the guide, the upper end of which is provided with a cutter located eccentrically to the axis of the support, a set screw through the sleeve, the inner end of which is adapted to engage with the guide, and to lock it against rotation, and `meansfor reciprocating the support, substantially as set forth.

5. In combination with a work supporting table, provided With a cross arm, a pair of reciprocatorysu pports carried bysaid cross arm the upper end of each of which supports is provided with a cutter located eccentrically to the axis of the support, and means for simultaneously moving said supports toward each other and for rotating them upon their axes, substantially as set forth.

6. In combination with a work supporting table provided with an under cut cross bar, of a pairof sleeves upon said bar, each sleeve being provided with a perforated projection which fits within the under cut portion of the bar, an oppositely screw threaded rod through the perforations of the projections, a guide in each sleeve, an arm upon the upper end of the guide provided with a hole, a longitudinally movable rotary support within each guide, the upper end of which is provided with a cutter located eccentrically to the axis thereof, and means for simultaneously reciprocating said supports, substantially as set forth.

7. In combination with a work supporting table provided with a cross bar, a pair of 1ongitudinally movable reciprocatory supports carried by said bar, the lower end of each of which is provided with a head, a cutter secured to the upper end of each support, a grooved carriage below the cross bar, the ends of the supports fitting within the grooved portion of the carriage, and means for moving the carriage, substantially as set forth.

ARTHUR L. KINGSBURY.

Witnesses:

H. P. FIELD, A. J. ALDRICH.

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