US1562610A - Magazine-wrapping machine - Google Patents

Description

if). BAEREJ MAGAZINE WRAPPING MAUHXNE Filed Jan. 10 1924 INVENTUR. W i I Patented Nov. 24, 19125.

UNITED STATES DANIEL S. BAIRD, OF HAMILTON, ONTARIO, CANADA.

MAGAZINE-WRAPPING MACHINE.

Application filed January 10, 1924. Serial No. 685,474.

To all whom it may concern:

Be it known that I, DANIEL S. BAIRD, of the city of Hamilton, in the county of lVentworth, Province of Qntario, Canada, a subject of the King of Great Britain, have invented certain new and useful Improvements in Magazine- Vrapping Machines, of which the following is a specification.

This invention relates to magazine wrapping machines of the type employing rotatable forks which grasp the magazine near the forward edges of its ends and roll it up with a sheet of paper having a gummed edge by means of which it is sealed.

In such machines it is known to feed the paper as a web and to sever the sheets there from, but it is found that there is a great deal of trouble experienced in keeping the paper straight during its passage from the supply roll to the wrapping mechanism, and if the paper does not run straight it will not roll straight about the magazine. It is my object therefore to devise means for ensuring the wrapper being so rolled in and about the magazine that plies overlie one another as nearly as possible with their edges in alinement and the end of the wrapper parallel to the axis about which the magazine and wrapper were rolled.

I attain my object by means of the constructions hereinafter fully described and illustrated in the drawings, and which may be briefly described as follows.

The web of paper from the supply roll is led between a bed roll and a feed roll and in its passage over the bed roll is acted 011 by a rotary cutter associated with the feed roll which produces two lines of weakness across the web, one more pronounced than the other, and thereafter by a gumming roll which applies gum adjacent the rear end of each partly severed sheet into which the web is divided.

After passing the gumming roller the web passes between two constant speed rollers, one of which is yieldingly pressed towards the other which other is preferably the bed roll hereinbefore referred to. Thence the web is led between guides which confine it suliiciently to guide its end to a magizine, as the latter is being rotated by the forks, but without binding it in anyway.

The feed of the web is continuous and uniform, but the surface speed of the rtating magazine is designed to be greater than that of the travelling web from which it results that a sheet is torn from the end of the web along the adjacent line of greatest weakness as soon as its end is firmly grasped in the magazine.

. If the web is travelling straight, the end is gripped firmly from side to side as soon as it enters the fold of the magazine. If, however, the web is not travelling quite straight after passing the feed roll and cutter, its forward edge is not parallel to the axis of the rotating magazine, and one corner is more advanced than the other. In this case, the forward corner is first grasped and pulled until the forward feed of the paper is sufficient to cause the front edge to be gripped for its full width. The result is that the paper receives a preliminary pull at the side adjacent the leading corner, which causes the tearing off of the sheet to begin at that side and to progress across to the other side. This action tends to straighten the web back of the spring pressed roll between which and the feed roll the action of the gumming roller tends to upset the alinement of the paper.

It does not appear that the straightening movement is very great in any one operation, but I do find that when a free and unconfined end is torn from a constantly travelling web along a line of weakness that the operation causes the web to run straight, whereas much difliculty is experienced in causing separate sheets to run straight.

The invention is illustrated in the accompanying drawings in which Fig. 1 is a front elevation of part of a magazine wrapping machine provided with my improvements; and

Fig. 2 a section on the line 22 in Fig. 1.

In the drawings like numerals of reference indicate corresponding parts in the different figures.

lThe wrapping mechanism proper has as its basis the forks 1 formed on the spindles 2 rotatably and longitudinally slidable in the bearings 3. The forks are rotated through the medium of the pinions 4: engaging the spindles 2 through the medium of suitable keys and keyways. The pinions mesh with gear wheels 5 fast on the spindle 6 journalled in the brackets 7. These spindles also carry the pinions 8, which mesh with racks 9. These racks are driven by means of the cams 10 fast on the shaft 11, the lower ends of the racks being prefer ,a.bly provided with the anti-friction rollers 12. The racks are held in place attheir with the frame of the machine; The upper ends of the racks slide in the brackets 7, By the constructions just described the forks 1 are given a rotary movement in one direction, the movement being then reversed and thef'forks returned to their'original position. scribed; capable of endwise movement. This movement is imparted to them at the proper tinie'by any mechanism known' in the art.

To ensure a tight roll and to ensure also the' proper pasting, of the pasted edge of the wrapper in contact with the roll, 1 provide the pressure bars 14:, preferably formed as rolls journalled in the blocks 15 movable to and from the forks in n the guides 16; The pressure bars thus maintain a firm pressure on the vroll as the wrapping proceeds, while they readily yield to accommodate themselves to the increasing diameter of the roll as wrapping proceeds;

The magazines ,to be wrapped may be'fed forward to the forksl by any known means. I show for this purpose a feeding slide 17 suitably supported on the table 18 and which maybeoperated in any'known manner.

My invention lies particularly in the parts I will now describe foiflprepariiig and feedingthe wrapping paper to be rolled in with the magazine through the medium of the forks 1. I '4 I Above the partspreviously described is suitably :journalled a large"; roll 19, which' may be termed a bed -roll.- Qver thisroll the web of paper 20 is led from the supply roll 21. ,Journalled adjacent the, bed roll is the rotaryrfeed roll andcutter 22, which,

carriesjtwo knives 23 and 24 which are adapted to co-operate with thebed roll to produce lines of weakness in or partly sever the web, either by; producing lines of per forations, deep scorings, or in any other suitable manner. The cutters will be so arranged that one of the lines of weaknessis more pronouncedthan ,t he other so that the web'avill more readily tear thereon.

The cutter knives are mounted betweeii stripper bars adapted to slide radially in the rotary-cutter and which are yieldingly heldr pressed outwardly bygcofl springs 2 5 The more pronoun'ced lineS.Of Weakness delimit" the separate wrapping sheets and along these lines the web is torn in the nrocess of wrap} l ping as hereinafter described. The, other lines .of weakness facilitate the breaking openi'of the wrapper by the recipient of the rolled magazinek e I 1 After passing between thebed roll and the rotary feed roll and cutter, a gummed edge is formedadj'acent-one edge of each sheet delimited in jthe web through athe medium of the gumming mechanism 26, which is of The forks are'also, as already de ping movement. w I I feeding mechanism s preferably such that' ordinary tyJe and driven in synchronism with the bet roll and cutter through gearing hereinafter described. 7

From the 'gum'ming mechanism the web passes between the spring pressed roller 27 and the bed roll 19', the spring pressed roller serving to hold the paper down so that it is not readily liftedaway from the bed roll by the action of the gumming mechanism and to feedit towards the wrapping mechanism. hereinbefore described.

It is at this point, however; that the alinement of the web of paper is liable to be disturbed as thegumming roller seems to have a tendency topull one side or the other of the paper away from the bed roll due to the stretchability of the paper.

Between the wrapping 'meehanism and the said two rollers is located the guide 28;

This may be of any form which will guide the web so that its end may be caught in the magazine as t is rolled up; but is shown as composed of two wire grids 29 between which the web loosely passes; The web is 'thus capable of moving'more or less both laterally and in a direction to or from the rollers within certain limits.

The bed roll 19 is driven from the driving mechanism for the forks in such a manner that the web of paper is fed forward ata speed which is constant relative tothe speed of rotationof the forks 1 during the wrap- The speed of the paper the rate of feed of the web is somewhat less than thespeed at which the magazine rotated by the forks tends to draw in the wrap ping paper. The result of this is that as soon as theend of the web'is firmly grasped in the'inagazine the end shee't is torn from y the web, the result of this action being as hereinbefore described.

The spring pressed 'roller27 is of greatimportance in securing the desired result as the paper, when pi'illed, will slide under the roll, andthe pull on the paper thus made effective rightback to the feed roll to straighten out and flatten the paper.

I show the bed roll as being connected with "a sprocket .wheel 30, driven by a Sprocketc-hain 31 from a sprocket wheel 32 on the shaft 11. The rotary feed roll and cutter 22 is preferably half the diameter of the bed roll and is therefore driven at twice the s 'aeed'thro'ugh the'medium of gearing 33 from the bed roll. The gum'ming roll 8 of the gun'miing mechanism 26 being halfthe diameter of the feed roll is also driven at twice the speed of the feed roll throughthef medi u m'of gearing 35. The spring pressed roller 27 is an idler roll; Thus the wrapping sheets are delimited by lines of weakness, are provided with the extra line of weakness to facilitate the tearingopen of the rolled magazine and aregmnmed'adjacent one edge during one revolution of the bed roll.

What I claim is 1. In a magazine wrapping machine, the combination of feed mechanism adapted to draw a web of paper from a roll; means geared with the feed mechanism and located intermediate of the supply roll and the point of delivery of the feed mechanism for producing spaced lines of weakness across the web delimiting individual wrappers; rotary magazine rolling mechanism adapted to grasp and rotate a magazine fed to it; means loosely guidin said web to direct its lead-- ing end to a position to be rolled in with the magazine whereby the paper is free to move laterally between the feed mechanism and the wrapping mechanism; and means for synchronously driving said feed mechanism and magazine rolling mechanism so proportioned that the latter tends, when the web is caught in a magazine, to draw the web in at a greater speed than that at which it is fed whereby the wrapper delimited by a line of weakness is torn from the web.

2. In a magazine wrapping machine constructed as set forth in claim 1, a specific construction in which the .feed mechanism comprises two rollers yieldingly held to gether and having their delivery point spaced from the w 'apping mechanism a distance somewhat greater than the length of an individual wrapper.

3. A magazine wrappmg machine constructed as set forth in claim 1 provided with gumming mechanism located between the means for producing lines of weakness and the point of delivery of the feed mech anism.

l. In a magazine wrapping machine, the combination of a supply roll for a web of paper; a bed roll; a rotary cutter geared to and co-operating with said bed roll to produce spaced lines of weakness across the web delimiting individual wrappers; gumming mechanism geared to and co-operating with said bed roll to gum the wrappers; a spring pressed feed roll co-operating with said bed roll to feed the web; rotary magazine rolling mechanism adapted to grasp and rotate a magazine fed to it; means loosely guiding said web to direct its leading end to a position to be rolled in with the magazine whereby the paper is free to move laterally between the feed mechanism and the wrapping mechanism; and means for synchronously driving said fed roll and magazine rolling mechanism so proportioned that the latter tends, when the web is caught in a magazine, to draw the web in at a greater speed than that at which it is fed whereby the wrapper delimited by a line of weakness is torn from the web.

5. In a magazine wrapping machine constructed as set forth in claim 4 a specific construction in which the bed roll and spring pressed roll are so located relative to the wrapping mechanism that their delivery point is spaced from the wrapping mechanism a distance somewhat greater than the length of an individual wrapper.

6. In a magazine wrapping machine con structed as set forth in claim 4: a specific construction in which the gumming mechanism is located between the rotary cutter and the spring pressed roll and in which the bed roll and spring pressed roll are so located relative to the wrapping mechanism that their delivery point is spaced from the wrapping mechanism a distance somewhat greater than the length of an individual wrapper.

7. A magazine wrapping machine constructed as set forth in claim 1 provided with means for producing lines of weakness across the web adjacent the other lines of weakness and of less pronounced character whereby the web tends to tear along the latter rather than the former.

Signed at Hamilton, Canada.

DANIEL S. BAIRD.

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