US807211A

US807211A - Paper-bag machine.

Info

Publication number: US807211A
Application number: US21456304A
Authority: US
Inventors: Charles F Smith
Original assignee: CONTINENTAL PAPER BAG Co
Current assignee: CONTINENTAL PAPER BAG Co
Priority date: 1904-06-28
Filing date: 1904-06-28
Publication date: 1905-12-12
Anticipated expiration: 1922-12-12

Description

PATENTED DEC. 12, 1905.

C. F. SMITH.

PAPER BAG MACHINE.

APPLIOATION FILED JUNE 28,1904.

ll SHEBTS-SHBET 1.

Invmio? .Wnerrexy:

PATENTBD DEC. 12, 1905.

C. P. SMITH. PAPER BAG MACHINE.

APPLICATION nun JUNE 28,1904.

11 SHEETS-SHEET 2.

Ei'trzeyser:

PATENTBD DEG. 12, 1905.

0. F. SMITH. PAPER BAG MACHINE. APPLIOATION FILED was 28.1904.

11 SHEETSSHEBT 3.

W1 lnvemarx 5 7663565." kwrzes'fils mitk y/aml/ m M%W H as v PATBNTED DEC. 12, 1905.

C. F. SMITH.

PAPER BAG MAGHINB.

nrmouxon FILED JUNE 28,1904.

l1 8HEETSSHEET 4.

Witnesses:

PATENTED DEC. 12, 1905.

C. F. SMITH. PAPER BAG MACHINE. APPLICATION FILED JUNE 28.1904.

11 SHEETS-SHEET 5.

Inventor. CkarZesFfi'mW/k Wznesses: @z 4 PATENTED DEG. 12, 1905.

C. P. SMITH.

PAPER BAG MACHINE.

APPLIUATION FILED JUNE 25,1904.

11 SHEETS-SHEET 6.

172002? Zor Cfiarles Ffi'flzzik ymdm PATENTED DEC. 12, 1905.

G. P. SMITH.

PAPER BAG MACHINE.

APPLICATION FILED JUNE 28.1904.

11 SHEETS-SHEET 7.

Hay/2211 PATENTED DEC. 12, 1905.

G. F. SMITH. PAPER BAG MACHINE.

APPLICATION FILED JUNE 28.1904.

11 SHEETS-SHEET 8,

Witnesses:

No. 807,211. PATENTED DEC. 12, 1905.

G. F. SMITH.

PAPER BAG MACHINE. APPLICATION FILED JUNE 28,1904.

11 SHEETS-SHEET 9,

[74 We Veda/1' I CiaarZesZlYma'tk PATENTED DEC. 12,1905, 0. P. SMITH.

PAPER BAG MACHINE.

APPLIGATION FILED JUNE 28.19.04.

11 SHEETS-SHEET 10.

jnyenor: UkarZeSZJmcZ /k the combined breaker and ironer.

, UNITED STATES PATENT OFFICE.

CHARLES F. SMITH, OF BRIDGEPORT, CONNECTICUT, ASSIGNOR TO CON- TINENTAL PAPER BAG COMPANY, A CORPORATION OF MAINE.

PAPER-BAG MACHINE.

Specification of Letters Patent.

Patented Dec. 12, 1905.

Application filed June 28, 1904. Serial No. 214,563.

to furnish reliable means, which may be operated with accuracy at high speeds, for formingthe diamond fold.

Another object of my improvements is to furnish simple and efficient means for folding the front and rear flaps of the diamond in the formation of the bag-bottom.

In the drawings accompanying this specification, Figure 1 represents a side elevation of' so much of a paper-bag machine of the class specified as will suffice to illustrate my improvements. Fig. 2 is a view similar to Fig. 1, but with one of the side frames and some other parts removed to more clearly show the remaining parts. Fig. 3 is a front elevation of the tucker-plate and its appurtenances and their operative mechanisms. Fig. 4 is an end elevation, partly in section, of a portion of the parts shown in Fig. 3 and of Thesection of Fig. 4 is taken on line c of Fig. 3 and looking in the direction of arrow 0 in said figure. Fig. 5 is a detail elevation looking in the direction of arrow 0 Fig. 3, of the Y oscillating mechanism of the tucker-plate.

Figs. 6 to 17, both inclusive, are front and end elevations, respectively, of the diamondfolding mechanism, illustrating successive positions of the several parts of said mechanism during the opening out of the forward end of the bag-blank and folding the same into thediamond fold. The end elevations ofFigs. 7, 9, 11, 13, 15, and 17 are partly in section, said sections corresponding to that of Fig. 4. Also therespective arrows in Figs. 7, 9, 11, 13, 15, and 17 indicate the direction of view of the corresponding front elevations, respectivelyfor instance, arrow 7 of Fig. 7 indicates the direction of view of the front elevation of Fig. 6, &c. Fig. 181s a side elevation,

partly in section, representing a modification of the breaker and ironer mechanism; and Fig. 19 is a view similar to that of Fig. 18, showing the parts thereof at another stage of their operation. The section in said Figs. 18, 19 is taken on line n n of Fig. 20 and looking in the direction of arrow 1%. Fig. 20 is a plan view corresponding with Fig. 19 and looking in the direction of arrow 9 in said figure.

Fig. 21 is a side elevation representing an other modification of the breaker and ironer mechanism, and Fig. 22 is a View similar to that of Fig. 21, showing the parts at another stage of their operation. Fig. 23 is a rear elevation of the flap-folding mechanism, and Fig. 24 is a plan view of the same. Figs. 25 and 26 are side elevations showing the flapfolding mechanism and illustrating successive positions in the operation thereof.

Similar characters refer to similar parts throughout the drawings.

The paper-bag machine in which I have in the present instance chosen to embody one form and which may be the preferred form of my improvements may comprise side frames, as 3 4, in which may be supported the various parts of the machine. Drivingshaft 2 is suitably mounted for rotation in said side frames and has fixed thereon

gears

5 and 6. shaft by some convenient means (not shown) and through

gears

5 and 6 thereon to the various parts'of the machine. 1

The forming of the. tucked-paper tubing and severing it into bag-blanks being nopart of my present invention, I have not provided means therefor. Suffice it,therefore,to say that any one of several of the well-knownmeans therefor is suitable for use in connection with,

my improvements, and I have illustrated in outline only, Fig. 1, rolls, as 21 22, for feeding the tucked paper tubing to severing means, which means are indicated in a general way by S, and rolls 24 25 and 34 for deliv ering the severed bag-blanks to the foldingbed. Rolls 21 22 are fixed on shafts 23 240, respectively, and may be caused to coact by means of gears 25 26 on said shafts, respec tively. Said gears may be driven from gear 6 on shaft 2 through intermediate gears 27 28. Rolls 24 25 are fixed to shafts 29 30, respectively, to which shafts are also fixed gears 31 32, respectively, whereby rolls 24 25 may be caused to coact. Gear 31 hasa wider face,-

Power may be communicated to said I than gear and projects outwardly beyond the same for engagement with gear 33. Said gear 33 meshes with gear 28, whereby gear 31 may be actuated from gear 6 on main shaft 2. For feeding the bag-blanks from rolls 24 25 and delivering them to the folding-bed rolls 34 are provided. Said rolls 34 35 are suitably mounted on shafts 36 37, respectively, and may be actuated for coaction by means of gears 38 39, fixed on shafts 36 37 respectively, and'connected to gear 33 by intermediate gear 40. The various gears are so proportioned that rolls 21 22, 24 25, and 34 35 may each be driven at approximately the same surface speed as the faces of the folding-beds. Also, if desired, guide-tables, such as 41, between rolls 24 25 and 34 35, and such as 42, between rolls 34 35 and the tuckerplate, may be provided to insure the desired direction of travel of the bag-blanks.

Extending inwardly from side frames 3 4 are tubular brackets 3 4*, respectively. Said brackets are provided with flanges 3 4 respectively, which flanges are secured to said side frames, respectively, by means of bolts, as 110. Said tubular brackets serve as bearings for carrier-shaft 7, and to their peripheries, respectively, are-fastened various parts of the machine, such as still-

cams

171 and 18. On shaft 7 is fixed revoluble carrier 9 and carrier-gear 8, which latter meshes with gear 5 on main shaft 2. Pivotally mounted for oscillation on said carrier are one or more folding-beds. 1n the present instance three are shown, as 10 11 12, arranged and adapted to revolve with carrier 9 about shaft 7 as an axis and to oscillate at predetermined times toward and away from said axis. As these folding-beds are duplicatesof one another, a description of one will sufiice for all. Folding-bed 10 is pivotally mounted at 13 in carrier 9, and on the inward end of depending arm 10 thereof is pivotally mounted roll 14 for engagement with still-cam 160, whereby said folding-bed may be oscillated, as described. Also pivoted at 13 in said carrier is the usual front clip 15. Said front clip is provided with an inwardly-extending arm 16, having pivotally mounted on its inward end roll 17 for engagement with still-cam 18 for closing said front clip onto the face of the forward part of folding-bed 10 or onto a bagblank thereon. Said folding-bed 10 is also provided with the usual oppositely-disposed side clips 19 20 for clamping the lower plies, respectively, of the bag-blanks to the foldingbed. Said side clips may be operated by the usual cams, as 171 172, Fig. 24, and in the usual manner, as more fully shown and illustrated in United States Patent No. 636,090, granted October 17, 1899, to Olaussen and Mortson, and to which reference may be had.

In brackets 43 44, secured to side frames 3 4, respectively, by means of suitable bolts, as 45 46, is mounted tucker-plate and its operative mechanism, Figs. 3, 4, 5. Said tucker-plate preferably comprises a plate of metal, as 500, suitably mounted on a yokeshaped frame 51, which frame is fixed to trunnion-shafts, as 53 54, which shafts are mounted for oscillation in said brackets 43 44, respectively. Said plate 500 is preferably arranged so that the plane of its working face intersects the axis of trunnion-shafts 53 54 and with its working edge 50 extending substantially beyond said axis. Said plate 500 is provided with yieldable members 51 51, projecting from yoke-frame 51 and preferably at substantially forty five degrees to the tucker-plate axis and at ninety degrees to each other. Said yieldable members may be integral with plate 50 or may be separate therefrom, as may be convenient. Said tuckerplate'is also provided with the usual front hook 52, arranged and adapted for engaging the upper ply of the bag-blank to assist in holding the same on the tucker-plate. For oscillating the tucker -plate the following means are provided: Projecting from bracket 43 is arm.56, to the outer end of which is adjustably secured, by means of bolts 60 and concentric with shaft 53, internal segmentgear 57. Arm 58 is mounted for oscillation on shaft 53, and at the outer end of said arm is revolubly mounted planet-gear 59 and roll 61. Said planet-gear meshes on one side with segment-gear 57 and on the other side with gear 55, which last is fast to the outer end of trunnion-shaft 53. Suitably supported for revolution in the upper parts, respectively, of frames 3 4 is shaft 62. By means of gear 101 thereon, which meshes with gear 8 on shaft 7, said shaft may be rotated, and as gear 8 is three times as large as gear 101 shaft 62 will therefore revolve three times for each revolution of shaft 8. On one end of shaft 62 and outside frame 3 is fixed cam 63, arranged and adapted for engagement with roll 61 on arm 58. By these means arm 58 may be oscillated, and by planet-gear 59 thereon gear 55, trunnion-shaft 53, and tucker-plate 50 may be 0scillated through double the angular distance traversed by arm 58.

Oppositely disposed and mounted for oscillation on yoke-frame 51 are side clips 47 48. Said clips are arranged for coaction with yieldable members 51951 respectively, of the tucker-plate, and have their axes at angles substantially forty-five degrees, respectively, to the axis of said tucker-plate. At the outer ends, respectively, of pivot-shafts 65 66 of said side clips are arms 67 68, respectively. Each of said arms is mounted at about midway its length on its respective shaft, and on one end of each of said arms is pivotally mounted a roll69 as to

arm

65 and 70 as to arm 66. vided with a pin-71 as to

arm

65 and 72 as to arm 66-for engagement with a spring-actuated plunger-73 as to

arm

65 and 74 as to The other end of each arm is proarm 66 for opening the respective side clips. Said plungers 73 74 are mounted in suitable recesses in bosses 75 76, respectively, on opposite sides of yoke-frame 51 and are urged outwardly by springs 77 78, respectively; Arms 67 68 may be adjusted and secured on their respective shafts by means of clampscrews 67 68, respectively. For closing side clips 47 48 oppositely-disposed cams 79 80 of peculiar shape and arrangement are provided for engagement with rolls 69 70, respectively. Said cams and their coacting rolls 69 70, arms 67 68, and shafts 66 constitute means of great simplicity and efficiency for operating side clips 47 48, and I am thereby enabled to actuate side clips 47 48 without the use of any of the several more or less complex and easily-deranged devices heretofore used for this purpose. Each of said cams 79 80 comprises two relatively adjustable members, and as said cams are right and left duplicates of each other the description of one will sufiice for both. The constituent members or

parts

801 and 802 of cam 80 are provided with conical working faces 801* 802, respectively, adapted for engagement with roll and parallel with the axis thereof. Said cam members are of cup-likev shape and coaxial. Also part 802 is so disposed within part 801 that the working faces of the two members present a continuous surface for engagement with roll 70, and said roll is of sufficient length to engage both members of said cam. Outer member 801 is adjustably secured to sleeve 49 of gear 49 by means of clampscrew 81, and inner member 802 is adjustably secured to the same sleeve by means of clampscrew 82. By these means said cam parts may be adjusted relative to each other and relative to their actuating means. Gear 49 is revolubly mounted upon an inwardly-extending sleeve 44 of bracket 44, and said gear is actuated from carrier-gear 8 by the following means: Said gear 8 meshes with gear 58 on shaft 83, which shaft 83 is revolubly mounted in bracket 44, and on the in ner end of said shaft is fixed gear 64, which meshes with gear 49, tothe sleeve 49 of which the parts of cam are secured. By this train of gears cam 80 may be revolved constantly in one direction, and the ratio of said gears is such that said cam makes one revolution for each cycle of the machine. The construction and arrangement of cam 79 is in every way similar to the construction and arrangement of cam 80, except that cam 79 is of the opposite hand from cam 80.

Cam 79 may be actuated in unison with cam 80 by the following means: Mounted for revolution in outwardly-extending portions of brackets 43 44 is shaft 83. Fast on said shaft and meshing with gear 49, on the sleeve of which cam 80 is fixed, is gear 84. Also near the opposite end of said shaft is fixed gear 85 of equal diameter to gear 84 and meshing with gear 86 of cam 79, whereby for each revolution of cam 80 cam 79 is also turned through one revolution.

Above the tucker-plate mechanism and supported for revolution in brackets 87 88 is rock-shaft 89. Brackets 87 88 depend from side frames 3 4, respectively, and may be secured thereto by any suitable meansas, for instance, bolts 87 88, respectively. Fixed to shaft 89 is arm 91, to the free end of which is attached combined breaker and ironer 90. Also fast to shaft 89 is arm 92, to the outer end of which is pivoted one end of lever-arm 93. The other end of said arm 93 is bifurcated at 93 for embracing shaft 62 for the guidance of said lever-arm. Pivotally mounted on arm 93 is roll 94 for engagement with cam 95, fixed on shaft 62. Roll 94 may be urged toward the face of cam 95 by means of pull-spring 96, one end of which is attached to arm 92 and the other end to side frame 4. By means of arm 92, lever-arm 93, roll 94 thereon, and cam 95 said breaker and ironer may be oscillated upwardly and downwardly about rock-shaft 89. Said breaker and ironer is provided at its forward end with oppositely disposed wings 90 for breaking down and turning inwardly the sides of the mouth of the bagblank at the time of the opening out thereof in the formation of the bag-bottom. Without some assistance at these points at this time the bag-blank is peculiarly liable to be torn, and thereby result in an ill-formed or mutilated bag. I have discovered that by the use of said wings 90 90 said tendency to tear may be reduced to a minimum or entirely eliminated. At the rearward end of said breaker and ironer I in some instances employ one or more spring-fingers 90, whereby the diamond-folded bag-blank may be flattened down by a gentle pressure as said blank passes thereunder.

Referring now more particularly to Figs. 18, 19, and 20, I have therein illustrated a modification of my improved breaker and ironer in which said breaker and ironer 90 is divided lengthwise thereof into right and left members 900 901. Each of said members comprises an ironing portion which may be provided with a rearwardly-extending springfinger 90 and an upwardly and outwardly flaring front end, as 90 Said members 900 901 are provided with ears, as 90, each having a cavity wherein a pivot-pin, as 154 or 160, is free to turn. Said members 900 901 are maintained in their respective positions on said pivot-pins by any suitable means, such as collars 156, having set-screws 157 therein for engagement with their respective pins. Said pins are supported by arms, as 91 for

155 and 162 for pin 154, each pin being fast in its respective arm. Arm 91 is fast to shaft 89 for oscillation therewith. Said arm may be oscillated from the usual cam through roll 94, lever-arm 93, and rock-arm 92. In the IIO -members an independent movement.

present modification, however, a multiplyinggear device is introduced between shaft 89 and arm 92, which arm is free to turn on said shaft, whereby for a given angular movement of said arm said shaft may be moved through twice the angular distance. This device comprises a miter-gear 158, fast to bracket 88 and concentric with shaft 89, mitergear 159, mounted for free turning on the hub of arm 92, and miter-gear 161, fast to the outer end of shaft 89. Gear 159 meshes with both

gears

158 and 161, so that when arm 92 is swung through a given are gear 159 is rotated by stationary gear 159 upon the one side and imparts to gear 161 upon the other side and shaft 89, to which gear 161 is fast, twice theangular movement of said arm 92. By this means a long stroke of the breaker and ironer may be obtained with a comparatively small eccentricity of cam 95. Arm 162 is fast to shaft 163, which shaft is pivotally mounted in extensions 87 c 88 of brackets 87 88, respectively. Shafts 89 163 may be oscillated in unison by means of arms 164 165 thereon, re spectively, and which arms are connected by means of link 166 and pivot-bolts 167.

Referring now to Figs. 21 and 22, I have therein illustrated a further modification of my improved breaker and ironer, in which the breaker members thereof are separate from the ironer members. In this modification I employ two ironer members, as 901, similar to the ironer portions respectively illustrated in Figs. 18, 19, and 20, and mounted and. operative in a similar manner; but in this further modification I mount the breaker members on rock-shaft 163, and thereby afford saig Sai breaker comprises oppositely-disposed peculiarly-shaped scoop-like parts, as 90 having hubs, as 90, respectively, whereby they are attached to rock-shaft 163 for oscillation therewith.

On shaft 62 is also fixed the usual pasting and creasing segment 97. A paste-reservoir may be supported by any suitable means, as rods 108 109,projecting from frames 3 4, respectively, and paste may be supplied to said segment 97 by means of rolls 98 99, suitably mounted in bearings on said reservoir and driven in proper time by means of gears 102 103, the former of which meshes with gear 101 on shaft 62. Said paste-segment 97 is adapted and timed to transfer the paste to the face of the diamond fold as it passes thereunder, and creasers 104 105 are timed and adapted for forming in coaction with suitable grooves in the folding-beds, respectively, as grooves 106 107 in folding-bed 10, creases in the bag-blank for the folding of the front and rear flaps of the bag-bottom.

Oppositelyv disposed near side frames 3 4, respectively, and adjustably clamped to tubular brackets 3 4", respectively, are bracketarms 111 112. Said arms extend-rearwardly and each comprises a main member 111* as to arm 111 and 112 as to arm 112, and a headpiece 111 as to arm 111 and 112 as to arm 112. By means of bolts, as 113, members 111 111 of arm 111 may be held together and said arm adjustably secured to tubular bracket3. By means of bolts, as 114, the parts of arm 112 may be similarly held and said arm adjusted. Additional rigidity of arms 111 112 may be secured by means of a tie-bolt, as 120, opposite ends of which engage with ears 111 112 of said arms, respectively. By means of shoulders thereon and nuts, as 120 said tie-bolt may be secured to said brackets. On the outer ends, respectively, of arms 111 112 and pivotally mounted inbearing thereon are rear flap-holders 115 116, respectively. Said flap-holders each comprises a blade-like member preferably provided with an arm or arms at its free end and extending in the line of travel of said free end. In the present instance two such extensions are shown on each flap-holder, thereby forming a T-head thereon. 115 115 as to

folder

115 and 116 116 as to folder 116. Said extensions are eflicient for prolonging the time of cooperation of said folders with the folding-bed. The intimacy and uniformity of coaction of said flap-holders with the folding-bed may be increased by making their blank-engaging portions curved to conform to the curvature of the face of the folding-bed, as best shown at 116 in Fig. 2. Pivot-shanks 115 116 thereof, respectively, are somewhat inclined to each other, and the axes thereof form acute angles, respectively, with the face of the folding-bed. The result of said inclination of axes 115 116 is to cause rear flap-folders 115 116 to travel in a path 2) (indicated by a dot-and-dash line, Figs. 25 and 26) substantially parallel to the path of the face of the folding-bed during their cooperation therewith. This feature greatly prolongs the time of such cooperation, and

thereby adds materially to the efficiency of the rear flap-folders In the case of aflat reciprocating folding-bed pivotshafts115 116 would preferably be arranged normal to the face of the folding-bed, so as to cause rear flap-f0lders-115 116 to travel parallel therewith. The outer ends of shanks 115 116 have fixed theretobevel-gears 117 118, respectively, for engagement with similar bevel-gears 121 122, respectively, on cross-shaft 119, which shaft is supported in bearings 111 112, extending rearwardly from arms 111-112. respectively. On that end of shaft 119 ad jacent to frame 4 is fixed gear 123. Extending rearwardly from said frame 4 is bracket 4, in which bracket is revolubly mounted shaft 124. On the outer end of said shaft is fixed gear 125, meshing with carrier-gear 8 on shaft 7. On the inner end of shaft 124 is fixed gear 126, meshing with idle gear 127,

IIC

tion in arm 128, depending from bracket 4. The relative sizes of the gears in this train are such that for every cycle of the machine shaft 119 will be turned through two complete revolutions, and through bevel-gears 121 122 and 117 118, respectively, rear flap-folders 116 will each make two complete revolutions.

Directly below the rear flap-folders is the front flap-folding and the delivery mechanism. Mounted upon stud 131, projecting outwardly from frame 4, is idle pinion 132. Said pinion meshes on the one side with carriergear 8 and on the other side with gear 133 on shaft 134, which shaft is supported in bearings in side frames 34. Also on said shaft 134 and between the side frames are mounted gear 140 and roll 135. In brackets 3 4, extending rearwardly from frames 3 4, respectively, is fixed shaft 139, to which are fast spring-brackets 137 138. Said bracket 138 is provided with a cylindrical pocket, as 145, containing a push-spring 146, which spring through plunger 147 engages car 151 of bracket 150. The compression of said spring may be regulated by means of a set-screw 148. Bracket 137 is provided with a similar spring and its appurtenances for engagement with car 156 of bracket 155. mounted for oscillation on shaft 139, and they in turn support for revolution in their inward ends shaft 130. Said shaft has fixed thereon gear 141 for engagement with gear on shaft 134 and roll 136 for coaction with roll 135, also on shaft 134. By means of the trunnioning of arms 150155 on shaft 139 roll 136 may be lifted from contact with roll 135 by any bag or bag-blank passed between said rolls, and by means of the springs in arms 137 138 roll 136 may be urged toward roll 135 to grip any bag or bagblank passed between them.

Roll 136 for convenience has a portion of its periphery depressed or cut away, and at one end of the cavity so formed is mounted a clip 129 for engagement with the forward end of the normal periphery of said roll.

Front clip 129 is illustrated as comprising two members, as 129 129", arranged on opposite sides of web 136 of roll 136. Said clip members are fixed on pivot-shaft 143, which shaft has its bearing in said web 136. Shaft 143 also has fixed thereon arm 144, bearing pivotally mounted at its free end roll 149 for engagement with still cam 152. Said cam is fast on sleeve 155, extending inwardly from arm 155. Member 129 of front clip 129 is provided with a rearwardly-extending arm 129 for engagement with spring-actuated plunger 153, suitably mounted on web 136 of roll 136. By means of cam 152 front clip 129 may be lifted and prevented from engagement with the periphery of roll 136, and by means of spring-actuated plunger 153, when allowed by cam 152, said front clip may be caused to engage said periphery and to grip thereto any Said brackets 155 are bag or bag-blank suitably placed thereon. The several folding-beds on-carrier 9 are provided with suitable cavities, as 168 169, for the reception of the respective-members 129 129 of clip 129.

The operation of my improved machine is as follows: The various parts of the machine are assumed to be in their initial positions, and suitable tucked-paper tubing severed into ag-blanks being provided, one of said blanks is delivered into the bite of rolls 34 35. The machine is now started, and the bag-blank is fed by said rolls onto the contiguous foldingbed, as 10, with the lower ply of the forward end of said blank under the now lifted front clip 15, Fig. 4. Said front clip then grips the forward end of the lower ply of the bag-blank to the folding-bed, Figs. 2 and 7. Then side clips 19 20 enter the side tucks, respectively, of the bag-blank and grip the lower plies thereof to the folding-bed. At the same time the partial distention of the mouth of the bagblank causes the upper ply thereof to pass upwardly over front hook 52 of tucker-plate 50. Also side clips 47 48. of the tucker-plate enter the respective side tucks of the blank and partially close thereon, Figs. 6 and 7. The bag blank now continues its forward movement upwardly onto front hook 52 and tucker-plate 50 begins its backward rotation on trunnions 53 54, and when the bag-blank has reached its upper position on said hook side clips 47 48 fully close thereon and grip the-blank to the tucker-plate, Figs. 8 and 9. At the same time combined breaker and ironer 90 moves downwardly about its pivot-shaft 89 and approaches the bag-blank. Tuckerplate 50, continuing its backward or anticlockwise movement, edge 50 thereof presses the bag-blank onto the folding-bed, which fold-.

ing-bed swings on its pivot-shaft 13 toward axis 7 of carriage 9 in coaction with said edge 50 of the tucker-plate. .The mouth of the bag-blank is therebyopened, and the continued downward movement of breaker and ironer 90 brings wings 90* 90 thereof into contact with the sides, respectively, of the edge of the mouth of the blank, thereby turning said sides inwardly and assisting the folding thereof, while minimizing their tendency to tear, Figs. 10, 11, 18, and 21. The tucker-plate has now reached a position substantially normal to the folding-bed. It thereupon continues its anticlockwise movement, and the folding-bed now swings outwardly in coaction therewith. As the diamond fold nears completion breaker and ironer 90 continues to move downwardly (its breaker end passing out of action upover the tucker-plate) and presents its rear or ironer end and fingers 90", extending therefrom, for engagement with the diamond fold to flatten the same down into its final form ready for folding the end flaps thereof, Figs. 12 and 13. Tucker-plate 50 now turns over to itsextreme backward position, side clips 47-48 thereof are tively, Figs. 16 and opened, and the continued clockwise movethem. The tucker-plate then starts to turn in a clockwise direction on its return to its initial position for operation upon another bag-blank. At the same time breaker and ironer 90 returns to its initial position ready to repeat its operation on a succeeding. bagblank. Tucker plate 50 turns somewhat slowly during the early part of its clockwise return movement, and the high parts of cams 79 8O overtake rolls 69 70, respectively, and thereby partly close side clips 17 18, respec- 17; but said tucker-plate soon increases its speed, and rolls 69 7 0 overtake and run ahead of their respective cams, so that by the time said tucker-plate has returned to its normal position, Fig. 4, for the reception of a bag-blank said rolls are on the low parts of their respective cams and side clips 4:7 18 are open. As said closing occurs during the idle travel of the side clips it is in no way objectionable, and 1 have thereby been enabled to simplify the machine and to afiord additional time for the closing of the side clips onto the bag-blank. The bag-blank on its folding-bed now passes onward under creasing and pasting segment 97 whereby it is creased and paste is applied, as usual. At the same time front clip 15 is raised and the front flap of the diamond released.- The bagblank now passes onward to be acted upon by rear flap-folders 115 116. The creasing of the bag-blank by creasing-segment 97 causes the front and rear flaps of the blank to spring up somewhat from the folding-bed, and thereby affords the leading ends respectively of the T-heads of rear flap-folders 115 116 access under the rear flap of said blank. Also, as the flap-folders travel faster than the bagblank, said folders now strike against the under side of the rear flap, Fig. 25, and turn it over unto the bag-bottom. Then continuing their onward movement said folders hold the rear flap down as it advances to the position, Fig. 26, where the front flap is to be folded downthereover. Just before reaching this position the raised front flap strikes against the periphery of roll 136 and is thereby folded over toward the body of the blank. Clip 129 in said roll then grips the folded front edge of the blank to the periphery'of said roll, and side clips 19 20 release their hold on the bagblank. Rear flap-folders 115 116, foldingbed 10, and roll 136, continuing their respective onward movements, the rearward ends of the T-heads of said folders retain the rear flap in its folded state until the partly-folded front flap passes well into the bite between the folding-bed and roll 136. The rear flapfolders now swing outwardly respectively from off the rear flap and, the folding-bed, the bag-blank passes downwardly between the folding-bed and roll 136, and the folding of the front flap down onto the rear flap is there' by completed. Roll 136, still retaining possession of the completed bag, continues its rotation in an anticlockwise direction, and the bag is thereby conducted between said roll and roll 135, roll 136 swinging upward slightly on its trunnion-shaft 139 to afford room for the passage of the bag, as described. Clip 129 of roll 136 now.rises and liberates the finished bag, which by the continued rotation of rolls 135 136 is discharged from the machine. Roll136 thereby coacts successively in folding the front flap and in discharging the bagfrom the machine.

I claim 1. The combination of a revoluble foldingbed,means for forming the diamond fold thereon, an integral combined breaker and ironer comprising a pair of oppositely disposed downwardly-reaching ears and means for moving said breaker and ironer toward and away from the folding-bed; all combined and operating together substantially as described.

2. In a breaker and ironer, the combination of a pair of oppositely-disposed right and left ears, 90, 90 respectively, for turning inwardly the sides of the mouth of the bagblank, and one or more yieldable fingers, 90, for flattening the diamond fold, all combined and operating together substantially as described.

3. The combination with diamond-folding means, including a revoluble folding-bed, of an integral combined breaker and ironer comprising a reversed- U -shaped member, and means for moving said combined breaker and ironer in approximate parallelism with. the

\ folding-bed.

4:. The combination with diamond-folding means, of the ironer 90, means to operate the ironer in substantial parallelism with the diamond fold, breaker-

ears

90, 90 and means to oscillate said ears on fixed trunnions, all

combined and operating together substantially as described.

5. The combination of a revoluble foldingbed with rear flap-fold ers comprising a pair of oppositely-disposed members, each pivotally mounted for rotation on a pivot whose axis forms an acute angle with the face of the revoluble folding-bed, and means for rotating the flap-folders all combined and operating together substantially as described.

6. The combination of a folding-bed with rear flap-folders comprising a pair of oppositely-disposed members, each having an extension or extensions thereof in its line of travel respectively, to prolong its period of cooperation with the folding-bed, and means for rotating the flap-folders allcombined and operating together substantially as described.

7. The combination of a revoluble foldingbed and rear flap-folders; said rear flap-folders being so mounted for rotation that their path of travel, during their period of coaction With the folding-bed, is substantially concentrio with the path of said folding-bed, and means for rotating the flap-folders all combined and operating together substantially as described.

8. The combination of a folding-bed having a cylindrical Working face, side clips 19, 20, and rear flap-

folders

115, 116, said rear flapfolders mounted for rotation so that their path of travel, during their period of coaction with the folding-bed, is substantially parallel to the path of travel of. the folding-bed, and means for rotating the flap-folders all combined and operating together substantially as described.

9. The combination of a revoluble foldingbed having its surface curved in its plane of revolution, side clips 19, 20 thereon, and rear flap-folders, whose blank-engaging portions are curved to conform substantially to the curved surface of the folding-bed; all combined and operating together substantially as described.

10. The combination of a revoluble foldingbed 10, side clips 19, 20 thereon, ayieldablymounted roll 136, clip 129 thereon to grip thereto and remove the bag-blank from the folding-bed, said roll also for coaction with said folding-bed'for folding the front flap of the bag-blank and roll 135 for coaction with roll 136 for discharging the bag from the machine all combined and operating together substantially as described.

11. The combination of afolding-bed 1O having a cylindrical face, side clips 19, 20, rear flap-

folders

115, 116, whose blank-engaging portions are curved to conform substantially to the cylindrical surface of the folding-bed yieldably-mounted combined folding and delivery roll 136, clip 129 and roll 135, all combined and operating together substantially as described.

Signed this 20th day of June, 1904, at New York, N. Y., in the presence of two subscribing witnesses.

CHARLES F. SMITH.

Witnesses:

J. NUHE, J. MOOSSEUR.