US1298775A - Folding-machine. - Google Patents

Description

A. NOVICK.

FOLDING MACHINE. APPLICATION HLED MAY 21. 1911.

I/VVE/VTUR Abra ham NOVIC k ATTORNEY Patented Apr. 1,1919.

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.A- NOVlCK.

FOLDING MACHINE. v

APPUCATION FILED MAY 3!. 1911.

Patented Apr. 1,1919.

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A. NOVICK.

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APPLICATION FILED MAY 3|, 19H.

Patented Apr, 1, 1919..

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INVENTOR Abraham Novick v I "21H ATTORNEY ABRAHAM NOVICK, OF NEW YORK, N. Y., ASSIGNOR, BY- MEsNE ASSIGNMENTS, To UNI ED STATES ENVELOPE COMPANY, OF sPEINC IELD, MASSACHUSETTS, A

CORPORATION OF MAINE.

FOLDING-MACHINE.

To all whom it may concern Be it known that I, ABRAHAM Novron, a citizen of the United States, and resident of the city of New York, in the county of Kings and Stateof New York, have invented certain new anil useful Improvements in F olding-Machines, of which the following is a specification.

This invention relates to that type of ma chines which fold a blank into a tapered open end envelop.

My improved mechanism isparticularly adapted to the folding of the type of blank shown in Figure 3 in which triangular flaps as 101 are left on the blank between the front flap and the side flaps for the purpose of providing a thickness of paper at the corners 104 of the finished envelop, which corner, in the ordinary type of envelop, is unprotected.

My new machine folds the blank described into an envelop, means being provided whereby the triangular flaps 101 are prevented from'dragging the side flaps with them underneath the front flap when said front flap is folded. v

One of the objects of this invention is the provision of simple and rapidly working means for folding a blank into an envelop having tapered sides.

A further object of this invention is the provision of means for holding the corners of the blank between the front flap and the side flaps out of the way of the front flap and away from the body of the blank until after the folding of said front fiap is be- A still further object of this invention is the provision of means for urging a peculiarly shaped blank into accurate alinement for the purpose of creasing said blank, and

the provision of means for simultaneously creasing the blank along two longitudinal lines oblique to the axis of the blank and one line perpendicular to said axis.

To accomplish said objects, I employ the mechanisms shown in their preferred forms in the accompanying drawings, in which- Fig. 1 is a plan view of my machine, V3,? rious parts being broken away to show mechanism thereunder.

Fig. 2 is a vertical section on line 11 of Fig. 1, showing the creasing and folding mechanisms.

Fig. 3 is a plan view of the blank to be folded, showing the lines on which the Specification of Letters Patent.

Patented Apr. 1, 1919.

Application filed. May 31, 1917. Serial No. 171,872.

folds are to be made, and the means for alining said blank.

Fig. 4 is a plan view similar to Fig. 3 showing the blank creased and the corners 104 plaited and held down in readiness for the folding operations.

Fig. 5 is an elevation of Fig. .4 and Fig. 6 is a perspective drawing of the same.

Fig. 7 is a plan view of the blank and front folder after the front fold has been completed, and Fig. 8 is a vertical section on line 7-7 of Fig.7.

Fig. 9 is a plan view of the finished envelop and Fig. 10 is a section on line 99 of Fig. 9, the thickness of the paper being exaggerated for clearness.

Fig. 11 is a plan view of a portion of the plunger plate showing the spreader fingers attached thereto and Fig. 12 is a section on line 11-11 of Fig. 11.

nections to the plunger rod for operating same.

The main table 1 is supported by side frames 2, which frames carry main shaft 3. Driving pulley 4, obtaining power from a source'not shown, is mounted on shaft '3 and rotates said shaft to actuate'the various sub-mechanismsof my machine, said sub-mechanisms being operatively connect ed to said shaft by suitable cams and con necting rods as 5 and 6 for imparting motion thereto in proper timed relation. .Auxiliary table 7 is supported above table 1 by posts as 8, and has mounted thereon the mechanism. for urging the blank into alinement for creasing and the means for feeding the blank from an elevator table as 9 of the usual type to the upper end 17 ofthe creasing box 18.

he blank may be lifted from elevator table 9 by a picker 10 of the usual typewhereby the blank is lifted from the stack by gumming ledges. Said picker 10 is supported for reciprocation by suitable mechanism in arch 11 mounted on table 1. Stripper plate 12 strips the blank from picker 10 on the upward reciprocation of. said picker in the manner well known in the art. The blank is then gripped between movable jaws 13 and stationary jaws 14 oi the usual blank gripping operating,mechanisms 19 mounted. on the reciprocating conveyers 15 running in grooves 16 in table 7..

The gripper operatingmechanism 19 on its forward stroke strikes stop 20 on table 7 thereby bringing gripper jaws 13 and 14 together to grip the blank which has been brought up to stripping plate 12 by picker 10. Conveyer slides 15 are then moved rear- 'wardly until the main portion of the blank rate creasing position, alining pins 22v mounted on arms 23 and carrying blades 24 are used. Said blades 24 are adapted to engage the straight ed es of flaps 101 for straightening sa'idblan into proper position, the blank being urged forward by the oscillation of pins 22, against rear stop 25 on table 7 and side stops 26 on the same table, (Fig. 3) so that the edges of the blank on which the creases are to be made are directly over the inside faces of tapered creasing box 18 and directly under the corresponding edges of thetapered plunger plate 27. Arms 23 are attached to levers 28 and 128 pivoted at 29 on table 7, said levers being connected by the cross connecting rod 30 so that they will oscillate in opposite directions, (Fig.1.)

Lever 28 is oscillated through crank 31 on shaft 32 supported in bearing 33 on table 1.

Crank 34 on said shaft'32 is operated from main shaft 3 through a suitable cam as 5 and connecting rod as 6 passing through an opening 35 in table 1.

The blank is driven through the creasing box 18 by reciprocating plunger plate 27 attached to rod 36 and supported by plun ger arch 37 supported on table 1. Said rod 36 is reciprocated through rock lever 38 connected to said rod and pivoted at 39 in lug 40 of arch 37, by connecting rod 41 operated through a suitable cam on main shaft 3, (Fig. 13.) Spreader fingers 42 are attached 3 to the corners ofvthe plate 27 at the narrow end thereof, and are so shaped that they hold the corners of the blank away from the body thereof when said blank passes through the creasing box, openings 43 in table 7 being provided for said spreader fingers and blank corners to pass through.

The creasing box 18 is made up of the two vertical inside walls 44 oblique to the axis 106 of the blank 100 and vertical front wall 45 perpendicular to axis 106, the bottom of said box being the hinged trap 46. Stationary fingers 47 on table 1 are so shaped-that they fit the notches in spreader fingers 42 I and coiiperate with said spreader fingers to form a plait 104 in the corners of the blank between the front flap and the side flaps on the downward stroke of plunger plate 27, thelast part of said stroke causing said plaited corners to be pushed under said fingers 47 by fingers 42, to be held there until after thefolding of the front flap 102 is begun, (Figs. 4, 5 and 6.)

The folding of said front (flap is accom plished by plate 48, cut away near the cen-v ter to pass front wall 4501 the creasing box and'mounted in shaft 49. Said shaft 49 is supported in bearings 50 and 51 and is operated by 'crank 52 through connecting rod 53 passing through opening 54 in table 1 and operated by a suitable camonv main shaft 3. The folding of the front flap 102 withdraws the plaited corners 104 of the blank from under fingers 47 and lays the protecting flaps 101 against the upstanding side flaps 103, (Figs. 7 and 8.) The side flaps are folded down by means of folders 55 angularly disposed with regard to axis 106 of the blank, (Figs. 1 and 2) and pivoted in bearing 56011 table 1. Only one of said folders is shown, it being understood that this-description applies also to another folder symmetrically placed in the machine. Said side folders are operated through levels 57 at tached thereto, by means of hell crank levers 58 mounted onshafts 59 supported in bearings 60 on table 1, said bell crank levers being actuated by connecting rods 61 passing through opening 62 in table 1, by means of suitable cams on main shaft 3.

, The operation of my improved machine is as follows:

Blank 100 is lifted from elevator table 9 by guinmed picker 10 up to stripper plate 12, wherebythe plate strips the blank from the picker. At the same instant, conveyer slides 15 are in their most forward position, stops 20 closing movable jaws 13 and statlonary aws 14 of gripping mechanisms 19 together to cause them to grip the blank. Conveyer slides 15 are now moved rearwardlyun grooves 16 whereby gripping mechanisms 19 are caused to release the blank at a point slightly in advance of creasing position by stationary cams 21'.

Alinlng pins 22 are noit oscillated toward each other to engage the marginal indents of flaps 1 01 thereby urging the blank forward against stationary stop 25, blades 24 acting to straighten the blank against side stops 26 into accurate creasing position.

Plunger plate 27 now descends and carries the blank through creasing box 18 thereby caus ng the side flaps 103 and the front flap 102 to become partly folded and creasing the blank alon two edges oblique to the axis 106 I and one e ge perpendicular to said axis, at the same time that spreader fingers 42 hold part of flaps 101 away from the body of the blank. The last part of the downward motion of plate 27 presses the creased blank -on to creasing box bottom 46 while spreader fingers 42 cooperate with fingers 47 to plait part of flaps 101 and press the plaits formed underneath said fingers 47, whereby the plaits are temporarily held away from the body of the blank, said blank being left in the posi-.

tion shown in Figs. 4 and 5. Plunger plate 27 having been raised out of the way, front flap folder 48 is lowered by the rotation of shaft 49 carryin flap 102 down over the portion of the blan which rests on bottom 46 and withdrawing the plaits from-under fingers 47, at the same time creasing flaps 101 on a line continuous with the line on which the side flaps are creased. Side folders 55 are now operated to fold the gummed side flaps 103 on to front flap 102 thereby formin completed envelop 105.

As the blank is forced through the openflaps l01outwardly, forming a fold or plait 104, Fig. 4, which is crowded past the fingers 47; said plait, 'by the resiliency of the paper, springing beneath the stationary fin-- gers 47, as represented in Fig. 4. As the front fiapis folded by the folder 48, as rep resented in Fig, 7, the flaps 101 are drawn in against the side flaps 103, taking up the plait which has been held under the fingers 47 and forming creases between the flaps 101 and 102. The triangular flaps 101 are prevented by the fingers 47 from forming plaits between the front flap 102 and the side flaps 103, and-as the front flap is folded, the flaps 101 are drawn taut against the inner sides of the side flaps and interposed between them and the front flap 102. a

What I claim is: 1. In an envelop folding machine of the class described, a creasing table, means for moving an envelop blank on said table and auxiliary means for continuing the move-.

'- mentof the blank on said table, comprising a pair of studs journaled on each side of the path of the blank, arms carried by said studs and swinging in a plane parallel with the plane of the creasing table, pins carried by said arms engaging marginal indents in the edges of the blank, and means for oscillating said studs in opposite directions.

2. The combination in a machine for folding an envelop blank having side flaps and a front flap with triangular flaps extending from the side flaps upon each'side of the front flap, of means for creasing the side flaps and front flap and forming a plait in said triangular flaps, and means for holding said plait until the front fian is. folded.

3. In a machine for folding an envelop blank having side flaps, a front flap and triangular flaps extending from said side flaps on each side of said front flap, means for folding the blank, comprising a table having an opening corresponding to the completed envelop, a plunger for forcing the blank through said opening, spreader fingers carried by said plunger and projecting over said triangular flaps, said table having openings for said fingers, and means for folding the front and side flaps of the blank. 4. In an envelop folding machine of the class described, a creasing table, means for squaring and positioning an envelop blank on said table, comprising stops, arms on each side of.-the blank, means for swinging said arms'in opposite directions in a plane parallel with the creasing table, pins carried by said arms for engaging the marginal indents I in the edges of the blank to move the blank against said stops. 1

' 5. In an envelop folding machine of the i class described, a creasing table, means for squaring and positioning an envelop blank on said table, comprising stops, arms on each slde of the blank, pins carried by said arms, for engaging the marginal indents of the blank, blades carried by said arms for engaging the straight edges of the blank, and means for swinging said arms in 'a plane parallel with the table and in opposite directions to move the blank against said stops.

- 6. In a machine for folding an envelop blank having side flaps, a front flap and tri angular flaps extending from the side flaps on each side of the front flap and integral therewith, the combination of. means for forming a plait in each of said triangular flaps prior to the final folding of the front flap, means for folding the flap, and means for folding the side flaps in the order named. 7. In a folding machine, the combination of means for feeding a blank, oscillatory alining pushers adapted for engaging the. marginal indents of said blank and for urgmg said blank into alinement for creasing,

means for creasing said blank, a reciprocatlng spreader finger adapted to engage and hold a corner of said blank away from f the body of said blank, a stationary finger adapted to cooperate with said spreader fingel for plaiting said corner, for receiving sald plaited corner thereunder and for-holdingthe plait away from the body of the blank until after the folding of the front tapered creasing box having openings thereto and pro]ecting from the corners ofsaid in for allowing said plunger plate and spreader fingers to pass through and Sta-- from the body of said blank during further 3 operation thereon.

101* 7 ing a blank, oscillatory alining pushers 9. In a folding machine, means for feedadapted for engaging the marginal indents in said blank and for urging said blank into alinement for creasing, atapered reciprocating plunger plate, spreader fingers attached plate at the narrow end thereof, a tapered creasing box having openings for allowing said plunger-plate and said spreader fingers to pass through, stationary fingers adapted to cooperate with said spreader fingers for plaiting the corners of a blank between the front flap and the side flaps, for receiving said plaited corners thereunder and for holding the plait away from the body of said blank during further operation thereon,

means for folding the front flap and means for folding the side flaps.

10. In a folding machine, means for feeding a blank, means for alining said blank, a

tapered reciprocating plunger plate, spreader fingers attached to and projecting from the corners of said plate at the narrow end thereof, a tapered creasing box cooperating with said plunger plate for creasing said blank, said creasing box having openings therein for allowing said plunger plate and spreader fingers to pass through, stationary fingers adapted to cooperate with said spreader fingers for plaiting the corners of said blank between the front flap and the side flaps, for receiving said plaited corners thereunder and for holdin the plait away from the body of said blan until after the front flap is folded, means for folding the front flap whereby the plaits are straightened against the side flaps and means for folding the side flaps.

11. In a folding machine, a tapered reciprocating plunger plate, a tapered creasing box for cooperating with said plunger plate for making two longitudinal. creases in a blank oblique to the axis of said blank and one transverse crease in said blank and means for plaiting the corners of said blank between the front flap and the side flaps and for holding the plaits away from the body of rocating plunger plate, a tapered creasing box for cooperating with said plunger plate for making two longitudinal creases in a blank oblique to the axis of said blank and one transverse crease in said blank, means 5 for plaiting the corners of said blankbetween the front flap and the side flaps and for holding the plaits away from the body of said blank until after the folding of the front flap is begun, means for folding the front flap on said transverse crease whereby the plaits are flattened against the side flaps and means for folding the side flaps on said longitudinal creases.

13. In a folding machine, means for feeding a blank, means for alining said blank, a tapered reciprocating plunger plat-e, spreader fingers attached to and projecting from the corners of said plate at the narrow end thereof, a tapered creasing box cooperating so with said plunger plate for making two longitudinal creases in' said blank oblique to the axis of said blank and one transverse crease in said blank, said creasing box having openings therein for allowing said plunger plate and spreader fingers to pass through, stationary fingers adapted to cooperate-with 7 said spreader fingers for plaiting the corners of said blank between the front flap and the side flaps, for receiving the plaited corners thereunder and for holding the plaits away from the body'of the blank until after the front flap is folded, means for folding the front flap.on said transverse crease whereby the plaits are straightenedagainst the side flaps and means for folding the side flaps on said longitudinalcreases.

.side flaps and for holding said plaits away from the body of the blank until after the folding of the front flap is begun, means for folding the front flap on said transverse crease whereby the plaits are flattened against the side flaps and means for folding the side flaps on said longitudinal creases.

Signed at the cityof New York; in the county of New York, and State of New York, this 28th day of May, A. D. 1917.

'ABRAHAM NOVICK.

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