US513519A - Papeb bag mazing machine - Google Patents

Description

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R. MILLIS. K PAPER BAG MAKING MAGHINE. No. 513,59. Y Patented Jan. 30, 1894.

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No.'513,519. Patented Jan. 30, 1894.

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SPECIFICATION forming part of Letters Patent N o. 513,519, dated January 30, 1894. Application filed December 7, 1891. Serial No. 414,812- (No model.)

To @ZZ whom it may concern:

Be it known that I, ROBERTMILLIS, printers machinist, a subject of the Queen of Great Britain, and a resident ofDnnedin, in the British Colony of New Zealand, have invented an Improved Paper-Bag-Making Machine, of which the following is a specification.

The object of my invention is to provide a machine which will perform all the operations necessary for manufacturing square bottomed paper bags, with a side or center seam,` from printed orother sheets of paper.

According to my invention, I have devised a machine which iirst pastes one edge of the uppermost sheet of a pile of sheets of paper,

and which lthen, after said uppermost sheet has been placed in position by the operator, drives orcarries said sheet down by means of a square-shaped blank or male die (of Va size corresponding tothatof the bag to be made) into a mold or female die in such a manner that the two edges of the sheet of paper project up from between the sides of said male and female dies. Then two horizontally slid` ing folder blades are moved one after the other in such amanner as to fold first the unpasted side of the sheet of paper over the top of the male die or blank, and then the other side, so as to fold thepasted edge of the paper over the opposite edge and cause it to adhere thereto. While the sheet of paper isebeing formed into a square tube, a vertically sliding plate, or what I term the. bottom end folder, is raised so as to fold in the lower part of the end of said tube, and irnmediately afterward a paste roller, having previously been moved forward by a suitable cam arrangement, delivers a small quantity of paste alongthe underneath part of the top edge of the end of said bag, andthen another verticalV plate, or what I term the top end folder, is lowered,and folds in said pasted part of the end of said bag over the lower part, after which two more sliding plates or folders are moved so as to turn inthe two remaining peaks or sides of the end of said bag, tlieeffect of turning said peaks in being to cause them to contact with the paste roller above referred to, so that a certain quantity of paste is delivered onto them and they are thus caused to adhere to the bag bottom, thus completing the manufacture of the bag, which is then removed from the blank or male die upon which it has been formed, andis placed in position in front of a traveling roller and endless traveling apron, when a small roller supported upon a pair of arms above it is caused to move down so as to form a fold across the bag near the bottom, and the movement being continued, a straight blade or knife comes down and completes the fold in the bag, which is then guided to between said traveling apron and roller; the square paper cylinder or bag having the block bottom is thereby compressed into a fiat shape, which is very convenient for packing the bags in cases or other receptacles for delivery.

Referring to the accompanying drawings,

Figure 1 is a perspective view of a paper bag making machine, constructed according to my invention, while Fig. 2 is a side elevation, and Fig. 3 is a front elevation thereof looking from the left-hand side of Fig. 2. Fig. 4 is a plan of said machine. Fig. 5 is a horizontal se"- tion on line 5 5, Fig. 3; Fig. 5 illustrates the cam shaft and mechanism controlled thereby or co-operating therewith. Figs. 5b and 5c are sectional views illustrating the devices for operating some of the folding devices from the cam shaft. Figs. 6 to 13 are diagram matic views, illustrating the operation of the various folding 'contrivances above referred to, while Figs. Ga yto 13a are diagrammatic views, showing thefbag in various stages of manufacture, each view being shown alongside'the mechanism employed to effect the `change in the bag. Figs. 14 to 17 are diagrammatic views of part of the machine, illustrating the'contrivances used for folding or flattening down the completed bag. Figs. 141 to 16a are diagrammatic views, showing the completed bagy in the various stages which it undergoes while being folded or flattened down previous to being rolled or compressed. Fig. 18 is a side elevation of thelinclined table or platform upon which the sheet of l paper to be made into a bag is placed, showing the arrangement whereby the Width of the female die is varied to suit different sized bags. Fig. 19 is asimilar View to Fig. 18, but looking from the inside ofV the die. Fig. 20 is a plan of the adjusting plate forming the side of the female die and its connections.

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siamo Fig. 2l is a plan of the paper, hold fast and pasting roller; and Fig. 21n is a side elevation of the hold-fast. Figs. 22 to 31 are diagrarnmatic views, showing the arrangement of the various cams on the cam shafts, illustrating them in their different relative positions at the commencement of the operation. Fig. 32 is a sectional View showing the hold-fast used for retaining the sheet of paper in position in the female die.

The same letters of reference indicate the same parts in all the figures.

A Figs. l, 2, 3 and 4 represents a pile of sheets of paper from which the bags are to be manufactured, said sheets being cut to the required size and laid one above the other upon the paste table a.

Referring to Figs. 1, 2, 3, 4, 21 and 30 these Sheets of paper are retained in position upon said table by means of a hold-fast a which is arranged to press down upon the edge of the topsheet of the pile so as to prevent it shifting, while said top sheet is being pasted as well as to prevent it from lifting with the pastingV roller B when the latter is moved upwardly in order to get a fresh supply of paste as hereinafter described. The spindle b of this pasting roller is mounted in the ends of a pair of arms b which are rigidly secured at their other ends to a rock shaft h2 mounted in bearings in a small frame secured to the paste table a as shown.

d2 represents a stop arm which is adjustably fixed upon the rock shaft b2, and is arranged to come into contact with a set screw d3 passing through the arm 01,4, which is connected with the hold-fast a', when the paste roller B is brought down to paste the edge of the uppermost sheet of the pile of paper as hereinafter described. By thisA means the weight of the paste roller B is thrown on to the hold-fast a so as to cause it to hold the paper down firmly while the uppermost sheet is being pasted, and after the roller has been raised out of contact with said upper sheet to still retain a certain pressure on the paper yso as to prevent it from being carried up by said paste roller. The paste is deposited upon the upper sheet of paper about one-eighth of an inch from the edge, this one-eighth of an inch being required for the hold-fast to bear upon. After the paste roller has been raised, the uppermost sheet of paper can be removed by the operator, and be placed in position for the subsequent operations as hereinafter described, the next sheet being then in -position tobe pasted, and so on.

b4 represents a roller which rotates partly within the paste hopper b5 and whose periphery takes up a certain quantity of paste from within said hopper and delivers it to the paste distributing roller B, when the latter is brought into contact with it. This result is effected by means of-a cam b5, Figs. 2 and 3, secured upon a cam-shaft C driven by bevel gearing c from countershaft c2, which is .driven by spurI gearing c3 from the main shaft c4 of the machine, said main shaft being fitted with a Iiy-wheel c5, and fast andloose pulleys c6 which enable it to be driven by asteam engine or other convenient source of power. The cam b is arranged to act upon an antifriction roller on a lever b7 which is fulcrumedk at bs upon the frame D of the machine, and whose other end is connected bya rod b9 with the rear end of one of the arms or levers b carrying the paste distributing roller B. The spindle of the paste roller h4 is provided with a small grooved pulley b1, driven from one groove of the three grooved pulley b3, which runs loose on the rock shaft h2, and is driven from a pulley upon a cou ntershaft 512 mounted in bearings upon the side of the frame of the machine and driven from a pulley Z913 upon the main shaft c4 of the machine. The paste distributing roll B carries a pulley 524 driven from a third groove of the aforesaid pulley b3.

E represents an inclined table upon which the sheets of paper are placed one by one by the operator after one of their edges has been pasted by the roller B. This table is formed with an opening e in its center, as illustrated in Figs. 1 and 4, and over this opening a sheet of paper is laid in a certain deiinite position, which is determined by experiment, small stops or pins e (Fig. 4) being fitted on said inclined table E in order that each sheet of paper may readily be laid in the required position in a similar manner to the arrangement used on printing machines for the same purpose.

F represents a male die, blank or shape, which is secured upon the end of an arm or rod f mounted or pivoted in bearings f carried by the frame D of the machine and having a shorter arm f2 connected to a bell-crank lever f3 fulcrumed on a rod f4 and provided at its opposite end with an anti-friction roller f5 working upon and operated by a cam f6 on counter shaft C2 Figs. 2, 3 and 22.

G represents a female die or space into which the male die F is lowered, said female die or space being more clearly shown in Figs. 6 to 13, and 18 to 20. Said female die is situated immediately below the opening e in the inclined table E, and can be fitted with adjustable sides to enable various sized bags to be made in the machine as hereinafter described.

g (Figs. 2, 3, 4 and 32) represents a small spring hold-fast, having a downwardly projecting spindle g surrounded by a spiral spring g2 contained within a easing gwhich serves to retain said spring in its place and acts as a guide. The tendency of the spring is to always keep said hold-f ast in its raised position, so that when the blank or male die F is lowered, said spring hold-fast g will press the paper tightly against said male die and retain it in position, and at the same time will automatically adjust the depth of the female die or mold.

H and I Figs. 1, 2, and 5c represent two horizontally sliding folder plates arranged IIO IZO

one on each side above theV level of` the female die G. Each of these folder plates is arranged toslide in grooves (such as h Figs. 1, 2 and 18) formed in brackets or supports h secured to the framing of the machine. The folder plate H is connected by means of a rod h2 to a vertically arranged lever h3,

whose lower end is provided with an antifriction roller h4 arranged to be operated upon by a cam h5 on the shaft C, Figs, 5c and 23. The second folder plate I is similarly con nected by a rod i2 to aV lever 3 whose lower end is provided with an anti-friction roller i4, acted upon by a cam 5 arranged upon said shaft C alongside the cam 71.5. These two` inafter more particularly described, and asl illustrated in Fig. 9a.

J is a vertically sliding folder plate which is used for the purpose of doubling in the the lower part of the projecting end of the paper cylinder upon the blank or male die F, as hereinafter described with reference to Fig. 10. This sliding folder plate works in suitable guides j secured to the framing of the machine, and is connected to a rod j whose lower end is fitted with ananti-friction roller l7'2 operated upon by a cam je secured upon the shaft C, said cam being timed to cause said folder plate J to double in the lower part of the end of the said paper cylinder, as illustrated in Fig. 10a, while the folder plates H and I are in operation forming the paper cylinder.

K represents the top end folder plate which serves to double in the upper part of the end of the paper tube, said folder plate K being secured upon the end of anarm or rod k which is pivoted upon a bracket Zo projecting upwardly from the rod f which carries the male die or blank F Fig. 2. A spring Wis secured to this bracket 7c and always tends to hold the top folder plate K in its raised position.

The short-projecting arm of the rod lo is, however, fitted with a small pin k3 which projects sidewise from said rod and is adapted to be operated upon by a pusher rod Zetwhich is passed through suitably arranged guides 165 on the frame of the machine, and is connected at its lower end to an arm cfmouuted loosely upon the shaftf4 Figs. 4 and 5. An antifriction roller k7 on the lower end of this pusher rod 7a4 is operated upon by a cam 708 upon the shaft c2 Figs. 5 and 26.

L Figs. 2 and 4 represents a paste roller which works partly within a paste hopper Z supported against said roller by means of a bracket Z projecting from a pair of arms Z2, projecting upward from ashaftZ3 mounted in bearings Z4 in the frame D. An arm Z5 is rigidly secured to and projects forwardly froml the shaft Z3 and is provided with a set screw Zs which is operated upon by a cam Z7 secured upon the cam shaft C, said cam being timed to cause the paste roller L together with its paste hopperZ to move forward into the position illustrated in Fig. 11. This occurs just previous to the top folder plate K coming into operation as hereinafter described. The spindle Z8 of this roller L is tted with a small grooved pulley Z9 in gear with one of a pair of pulleys mounted loosely upon the sh aft Z-s and driven by a belt from a pulley Z secured upon the main shaft c4 of the machine.

M Figs 2 and 3b represents a horizontally sliding folder plate, which is provided for the purpose of turning down the right hand peak which is left standing after the two folders J, K have done their work. This sliding folder plate M is connected by a rod m with an arm m on a rock shaft m2 worked bya cam m3 on the shaft-C acting upon an arm m4 on said rock shaft, said arm preferably provided with an anti-friction roller m44, Figs. 3 and 27.

N represents another horizontal folder plate corresponding to M and connected by a rod 'n2 to a lever n fulcrumed to the framing at m2, the arm 'n4 of said lever carrying an antifriction roller m44 operated upon by cam n on cam shaft C, Figs. 3, 5, 5b and 28, the cams m8 and n being timed to move the folder plates M and N simultaneously. After the bags have been manufactured they are removed by the operator from off the male die or blank F and are placed in position opposite the fold` ing and pressing contrivances, which I will `now proceed to describe.

O Figs. 1, 2, 3, 4, and 14 to 17, represents an endless traveling apron working on a pair of rollers O and O2, while O3 represents a hollow roller which is heated by a gas jet burning inside same. The rollers O and O2 are mounted in bearings in a frame or pair or brackets secured to the main frame of the machine,and the roller O from which the apron receives its motion is'conuected by spur gearing O4 with the hollow roller O3. The roller O is driven from a pulley on the main shaft ofthe machine as illustrated.

Referring to Figs. l, 2, 3, 4, 5, and 14 to 16, inclusive, P represents two levers or arms which are fulcrumed in the upper part of a small frame composed of two upright brackets p, and which are connected at their ends by a spindle p passing loosely through bearings formed in the ends of said arms or levers. From this spindle p extends an arm p2 whose end is fitted with a rollerp3 arranged to work against the curved surface of a guide pt secured upon the side of the frame or bracketp. The spindle p onthe end of the arms P has a folder plate p5 secured to it as shown, so that IOO said plate is free to vary its position relatively with the arms P, but is guided or kept at the requisite angle or inclination by the roller p3 being held against the cam p4 by the spring t tiefste p6 which is attached to the upper part of said plate at one end, and to some fixed part of the apparatus at the other end as shown. A frame 197 is arranged to slide in bearings p8 on the folder plate p5, and carries at its lower end two rollers p9, p10 extending across from side to side of said plate and arranged to come into contact with the bag to be folded so as to make the first part of a fold, which is afterward completed by the folder plate The levers P and folder gear may be counterbalanced as shown, and are connected by a rod p11 with a rocking lever p12 fulcrumed at one end as illustrated at p13 upon some fixed support and provided with a roller p14 at about the center of its length, said roller being acted upon by a cam p15 upon the shaft c2.

The operation of my invention is as follows:-The sheets of paper to be fashioned into bags having been cut to the required size and printed with any matter it may be lrequired to place upon them they are laid one upon the other in a pile upon the pasting table a as clearly illustrated at A Fig. 2. The paste roller B is raised by the cam h6, so that it comes into contact with the roller b4 revolving in the paste hopper h5, and is thereby coated with a small layer of paste. As the cam h6 continues to rotate, this paste roller is allowed to fall onto the edge of the uppermost sheet of paper A, and thus pastes one of the edges of said sheet as will be well understood, the holdt'ast a meanwhile retaining the sheets of paper in position. This sheet having been pasted is removed by the operator and placed upon the inclined table E in a certain definite position which is determined by the stops e'. This is done while the male die F is in its raised position. Said male die is then lowered by means of the cam f6 through the medium of the connections f3, f2, and presses down the sheet of paper into the form illustrated in Figs. 7 and 7a. The horizontally sliding folder plate H is then moved forward by its cam h5, and folds over one of the upwardly projecting edges of said sheet of paper as illustrated in Figs. 8 and 8% The opposite horizontally sliding folder plate I is then moved forward by its cam t5 and turns down the other edge of the sheet of paper as the folder His drawn back, and said folder I continues to fold down the remaining edgeof thesheetuntil it has pressed its pasted edge upon the turned down side of the sheet of paper, as clearly illustrated in Figs. 9 and 9, thus forming an open ended square shaped cylinder as shown in said Fig. 9a. The lower end folder plate J is meanwhile moved up by its cam jg and is caused to fold in the lower projecting end of the paper cylinder, as illustrated in Figs. 10 and 10, leaving the other three projecting parts of the cylinder still standing. The paste roller L is them moved forward by its cam Z7 until it occupies the position illustrated in Fig. 11. The upper end folder plate K is then moved down by reason of its cam los operating upon the pusher bar 704 and therefore raising the free end of the lever 7c by engaging with the projecting pin 7c3 thereon, thus causing the opposite end of said lever 7c carrying the folder plate K to descend over the edge of the blank or die F, the effect being to fold in the top projecting part of the paper cylinder, as illustrated in Fig. 12, at the same time causing the edge of said top projecting part of the cylinder to contact with the surface of the paste roller L, so that when the top projecting part of said paper cylinder comes in contact with the lower part which has been previously folded down it will adhere thereto as will be well understood. The side folders M and N are then moved forward by their cams m3 n and are caused to fold down both of these projecting peaks at the same time, the effect being to cause said peaks to contact with the pasting surface of the roller L so as to coat them with a layer of paste, which will cause them to adhere to the other parts of the paper cylinder, when they are pressed down into contact therewith, as illustrated in Fig. 13a, thus completing the formation of the bottom of the bag. The bag being now completed as regards its manufacture, is removed by the operator off the die or blank F which is timed so that it is free to rise after the sliding folder plates M and N have done their work, and the bag thus removed is placed in position opposite the pressing roller o3 upon the endless traveling apron O, as illustrated in Fig. 14. In due course the cam p15 raises the lever p12 and through the medium of the rod p11 and lever P, causes the folding arrangement to descend. The roller p3 at the end of the arm p2 sliding against the guidep4, causes the creasing roller p9 to move in acircular path as it descends and directs it on to the top of the bag near the end thereof, the effect being to partially double up said-bag as illustrated in Fig. 15, the traveling apron meanwhile serving to keep the lower front edge of the bag extended forwardly. The downward movement of the creasing rollerp9 -is continued until the stop roller p10 comes in contact with the roller 03, when said creasing roller is prevented from any further movement. The folder plate or blade p5, however, continues its movement, the frame p7 carrying the creasing roller p9 sliding up in its bearings on the folder plate. By these means the bag is folded down in the manner illustrated in Fig. 15a, and is directed to pass between the roller o3 and endless traveling apron O, whereby it is rolled and flattened as shown in Fig. 16a, and is thus compressed into a convenient shape for packing. If it should be required to make smaller bags with my improved machine, it is merely necessary to reduce the size of the male die F, which is preferably built up with pieces of wood screwed on to a metal body which is itself secured by set screws to the arm f. These wood blocks are cut to special sizes corresponding to the size of bag to be made, and they are provided With holes pierced in them to admit air and allow the bag to be easily drawn off the die when made. The folder plates K and J can be replaced with smaller ones corresponding to the Width of the bag required, and the paste roller and hopper may be exchanged for smaller ones. The side plates g4 of the female die and the top of the inclined table E are rigidly Xed to each other, and are provided with tWo adjusting rods g5 sliding in holes bored in brackets gsecured to or forming part of the framing of the machine, and adapted to be retained in position by means of set screws g7 so as to hold the sides of the female die or mold at any required distance apart.

It Will be readily understood by all persons Who are acquainted with the art of manufacturing paper bags that with my invention it is possible to construct a bag having a side seam and to printupon the sheets of paper from which such bags are to be made, so that the printed matter will show upon the four sides of the bag Without the seam interfering with it, and the bag Will be constructed with ablock bottom and will be strongerand more convenient in use than these of ordinary construction.

Having now particularly described and ascertained the nature of my said invention and in what manner the same is to be performed, I declare that what I claim isl. In a paper bag machine, appliances for pasting one edge of the paper blank, comprising a support for the paper, a paste hopper, a paste delivery roll partly contained in the hopper, a paste distributing roll, a rock shaft, and means forimparting a rocking motion to said shaft and rotary motion to both rollers, and a hold-fast for the pile of paper, said rock shaft adapted to impart a vibratory motion to the paste distributing roll toward and from the paste delivery roll and paper support, and press the hold-fast onto said support.

2. The combination with the table A and a paste delivery roller above said table, of a rock shaft, a hold fast as c secured to an arm loose on said rock shaft and provided with an abutment, a radial arm fast on said rock shaft and adapted lto contact with said abutment, anda paste distributing roller belovtr the delivery roller having its bearings in arms secured to said rock shaft, substantially as and for the purpose set forth.

3. The combination With the table A and a paste delivery roller above said table, of a rock shaft, 4a hold fast secured to an arm loose on said rock shaft and provided with an adjustable abutment, a radial arm adjustable about the rock shaft and adapted to contact with said abutment, and a paste distributing roller below the paste delivery roller, having its bearings in arms secured to the rock shaft, for the purpose set forth.

4. The combination of the rock shaft b2, a three groove pulley loose on said shaft, the

paste distributing roller having its bearings in arms secured to the rock shaf t andcarrying a grooved pulley, and the paste delivery roller above said paste distributing roller, said delivery roller also carrying a grooved pulley and suitable connections between the pulleys on the rollers and that on the rock shaft, and means for imparting a rocking motion to the shaft and rotary motion to its pulley, substantially as and for the purpose set forth. I

5. In a paper bag machine, a female die provided With a spring-actuated vertically movable hold fast constituting the bottom of the die and consisting of a tubular support for said hold fast, a tubular guide in which said support has vertical motion, a guide red secured to the hold fast and having motion 1n the tubular guide with the support, anda coiled spring on said rod, the ends of-sald spring having bearing on the under side of the hold fast and the bottom of the tubular guide, substantially as and for the purpose set forth.

6. In apaper bag machine, the combination l with a female die, of a male die, a vibratory lever to which said male die is secured, a folder plate, as K, its supporting lever fulcrumed to the male die lever and provided with a laterally projecting pin, a reciprocating actuating rod adapted to move the folder lever in one direction, and a spring adapted to move said lever in a reverse direction, substantially as and for the purpose set forth.

7. The combination with the inclined table E provided with an aperture e, a female die below the said aperture, and a spring-actuated hold fast or bottom for said die, of a two armed lever, amale die secured to the longer arm of said lever above the aperture in table IOO E, a bell crank lever, one arm of which is pivotally connected with the shorter arm of the male die lever, and a revoluble cam operating upon the other arm of the bell crank lever, substantially as and for the purpose set forth.

8. The combination with the male die lever f, a bell crank lever one arm of which is connected with the short arm of said lever f, and a revoluble cam actuating said bell crank lever, of the folder plate lever lo pivotally connected With leverfand provided with a laterally projecting piu, the pusher rod 164 adapted to engage said pin, and a revoluble cam actuating the pusher rod, substantially as and for the purpose set forth.

9. In apaper bag machine, the combination With a bag folding plate, as p5and a vibratory lever to which said plate is pivoted, of a creasing roller and a support therefor, said support connected with and having motion on the folding plate, substantially as and for the purposes set forth.

l0. Ina paper bag machine, the combination With a bag folder, as p5, a creasing roller, as p, a stop roller, as p10 and a support for said rollers connected with and having mo- IIO tion on the bag folder, of a drying roll and a cooperating compressing roll, said parts arranged and operating substantially as and for the purpose set forth.

11.'The combination With the female die, the rock shaft Z3 provided with a radial arm, and a pulley loose thereon, a paste receptacle, a support therefor secured to shaft Z3, and a paste roller projecting from the front of said paste receptacle and carrying a pulley connected with the one on shaft Z3, of a revoluble cam operating on the radial arm of said shaft, the main driving shaft c4, and a pulley connected with that on shaft Z3, substantially as and for the purpose set forth.

12. In a paper bag machine, the combination with a vibratory hold fast, as a', a vibratory paste roll, as B, a rock shaft common to 1 both, said rock shaft adapted to intermitj tingly revolve the paste roll, a female die, a V cooperating male die,` and folding devices adapted to form three or four folds of thebag bottom, and an auxiliary paste roll adapted to apply paste to said folds; of a single cam shaft, and suitable cams adapted to impart the required motion at the proper time to said parts, and an independently operated folderl plate connected with the male die and adapted to form one of the end folds of the bag bottom, said independently operated folder plate timed in its operation relatively to the other folding devices and the auxiliary paste roll, substantially as described and for the purposes set forth.

13. In a paper bag machine, the combination with a drying roll and an endless carrier cooperating therewith to compress the paper bags, of a folding plate adapted to fold the bags on the carrier longitudinally, a creasing roller and a stop roller connected with and having motion lengthwise of the folding plate, said creasing roller operating to form a crease across the bag near its bottom, and said stop roller adapted to limit the motion of both rollers along the plate by contact with the drying roller, a guide arm adapted to guide the creasing and stop roller on the folding plate, and a guide cam for said arm, said parts arranged in their operations substantially as and for the purpose set forth.

Dated this 2d day of October, A. D. 1891.

ROBERT MILLIS.

Witnesses:

JOHN MAcKAY, HENTON M. DAVEY.

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