US1184442A - Stapling-machine. - Google Patents

Description

L. B. GIRARD.

STAPL ING MACHINE.

APPLICATION FILED SEPT. 8. I915.

Patented May 23,1916.

4- SHEETSSHEET I.

fann ar 'rmv cwnmA PLANOGIZAI'H co WASHINGTON. x). c.

L. B. GIRARD.

STAPLING MACHlNE.

APPLICATION FILED SEPT. 8. 1915.

1,184,442. Patented May 23,1916.

4 SHEETS-SHEET 2.

if If L. B. GlRARD.

STAPLING MACHINE. l 91 4,442. APPLICATION FILED SEP'F. 8, 19175- Patented May 23 4 SHEETSSHEET 3.

L. B. GIRARD.

STAPLING MACHINE.

APPLICATION FILED SEPT. a. 1915.

l ,1 84,442. I Patented May 23, 1916.

4 SHEETSSHEET 4.

QQMZM 42/145944 THE- COLUMBIA PLANOGRAFH Co WASHINGTON. n. c.

s'ra'rns PA P LOUIS B. GIRARD, 013 LOS ANGELES, CALIFORNIA, ASSIGNOR TO THE GIRARD MANU- FACTURING COMPANY, OF LOS ANGELES, CALIFORNIA, A CORPORATION OF CALI- FO-BNIA.

STAPLING-MACI-IINE.

Specification of Letters Patent.

Patented May 23, 1916.

o all whom it may concern Be it known that I, Louis B. GIRARD, a citizen of the United States, residing at Los lngeles, in the county of Los Angeles and State of California, have'invented a new and useful stapling-Machine, of which the following is a specification.

This invention relates to a machine for making staples and for driving the formed staples into the work, such as boxes or the ike, that is to be fastened by stapling.

One important object of the present inven ion is to provide for convenientand effective support of the Work in positlon for stapling.

Another object of the invention is to provide means whereby the same work supporting means may be used for different parts of the box or work, for example for stapling both the sides and end of the box.

A further object of the invention is to provide work supporting means which will permit different thicknesses of work to be stapled, and will maintain effective pressure thereon under all conditions.

My'invention is hereinafter disclosed with reference to the general type of stapling machine shown in my application Ser. No. 28,835, filed May 18, 1915, and in such. connection an object of the present invention is to provide improved means for operating the various die parts.

The accompanying drawings illustrate an embodiment of my invention, and referring thereto:

Figure 1 is a partly sectional side elevation of the machine. Fig. 2 is a partly sec tional plan view thereof. Fig. 3 is a side elevation of the die and work holder means, and the supporting means therefor, with the front plate removed. Fig. 4 is a vertical section of the die means. Fig. 5 is a section on line 5-5 in Fig. 4. Fig. 6 is a side elevation of the anvil over which the staple is formed. Fig. 7 is an end elevation thereof, with the adjacent portion of the female die member viewed from the slot in said die member. Fig. 8 is a vertical section of the rear pedestal with the inclined parts in elevation. Fig. 9 is a section on line 99 in Fig. 8. Fig. 10 is a plan view of the clutch mechanism. Fig. 11 is a section on line 11-.11 in Fig. 10. Fig. 12 is a side elevation of the work supporting means and the adjacent portion of the die means. Fig.

13 is a plan view of the work holder, the supporting means therefor being shown partly 1n section. Fig. 14 is an end elevat1on of the work supporting means with the work thereof in position for side-stapling a box. Fig. 15 is an end elevation of the work support with the work in position for stapling the end of a box.

he machine comprises a suitable frame, die means for forming and driving a staple, means for feeding a blank strip to said die means, and a work support operated automatlcally to raise and hold the work in position to receive the staples.

It also comprises a work holder between sald support and the die means, for holding Elie work during the side-stapling operaion.

The frame of the machine may comprise a base 1, pillars or pedestals 2 and 3 extending upwardly from said base, and an arm 4: extending horizontally from pillar 2 and provided with a head 5 in which the dies are mounted, directly over the pillar 3.

The machine is preferably power-open ated, a driving shaft 6 being mounted in bearings 7 in pillar 2 and carrying a driving pulley 8 which also serves as a fly wheel.

The several parts of the machine are actuated by a member 9, which is mounted on and keyed to shaft 6, and is adapted to be clutched to the fly wheel or driving pulley 8 by any suitable means, for example by the clutching means shown in Fig. 10. Said clutching means comprises a pin 11 mounted to slide in member 9, parallel to the axis of shaft 6, and adapted to enter any one of a number of holes 12 in driving pulley 8, a spring 13 being provided for driving said pin toward the pulley. A wedge or inclined face portion 14 on pin 11 is adapted to be engaged by an inclined end portion or face 15 on a lever 15 which is pivotally mounted at 16 and is connected by rod 17 (see Figs. 1 and 8) to an arm 18 on a shaft 20 which is provided with an operating pedal 21. Member 9 is provided with a cam or eccentric means 22 for operating the die means, and with cam means 23 for operating the work support. Guard means 19 are preferably provided for the clutch holes 12 in driving pulley 8, consisting of resilient pins or wires, secured at 19 to the pulley adjacent to each hole and extending over the p rtion of the hole which is the last to come under the clutch pin, the hole 12 being elongated so that suflicient room is left between the guard means 19 and the initial end of the hole 12 to permit the pin 11 to freely enter the hole provided it moves to ward the wheel while it is opposite this initial portion of the hole and the guard 19 will then yield and bend to allow the pin 11 to come in contact with the forward end wall of the hole so as to drive the wheel. If however, the pin moves toward the wheel at a time when it is opposite the guard, it will strike the guard and ride thereon, so as to be carried over to the next hole. This prevents breakage or undue wear of the wall at the forward end of the hole, such as would otherwise be caused by the pin, entering the hole too late to effectively engage'the same, with the result that the edges of the pin and hole wall are smashed or unduly worn. A wear plate 12 may also be provided at the forward end of each hole 12 to take unavoidable wear.

The die means may comprise die members constructed substantially as in my prior application aforesaid, namely, a female die member 25 mounted at the bottom of the die head 5, a male die member 26 mounted to slide in a vertical way 27 in said die head, and provided with parallel vertical prongs 28 adapted to enter a vertical slot 29 in said female die member, and a severing die 30 mounted to slide vertically on said male die member 26, between said vertical prongs. An anvil member 33 is mounted to slide horizontally in the female die member 25 and is provided at its inner end with aprojecti-on 34: normally extending into slot 29,

and formed with a horizontal slit 36 adapted to receive the end of the blank strip. Above said slit the member 33 is provided with an inclined face portion 38 and below said slit member 33 is provided with a vertical face 39 and with an inclined face 10 below said vertical face, for the purposes hereinafter set forth. Said member 33 is also shown as provided with lateral flanges 41 to ride on top of the female die member 25. A spring 42 presses anvil member 33 so as to normally hold the projection or anvil in position within the slot 29. The severing die 30 is connected by link 14: to one arm of abell crank 45, pivotally mounted at '16 onthe die head, the other arm of said bell crank being connected by rod -17 to the strap 48 of eccentric 22 on the actuating member 9 aforesaid. Links 50 and 51 are pivotally connected to bell crank 15 and to die member 26 respectively by pivots 52 and 53, and are pivoted together at 5%, so asto form a toggle. A tripping device con sisting of a screw 49 mounted on the die head, is adapted to engage the knuckle or intermediate pivot 541 of the toggle to break or bend the same, as hereinafter set forth, and a spring 43 engages the toggle so as to hold it normally in straight posi tion, in contact with link 44. Die member 26 is provided with a shoulder 32, adapted to engage a stop screw 37 mounted on the die head 5. Spring 43 holds the toggle straight until screw stop 49 breaks the toggle; This spring then becomes a means to hold die member 26 downwardly, said spring tending to straighten the toggle and cause the latter to exert a yielding downward pressure on said die memher, so as to hold shoulder 32 against stop means 37 with the result that the die members 28 are held ,in position to laterally confine and support the prongs of the staple during the driving operation. Stop screw 37 regulates the position at which-die mem'ber26 rests while the severingdie is driving the staple, said stop screw being adjusted so thatthe'diemembers 28 are permitted todescend just far enough to bring them'in 'contact with the work, or to-the lower face of the die "head. Spring 43 also acts as a stripper for severing member 30, by'holdingthe die member 26 down while the member 30 is rising during the return stroke.

The strip feeding means is not herein shown in detail, as it may be of the same construction'and operation as in my prior application aforesaid. In a general way said means comprises a strip reel or drum 55, mounted to turn on an arm '56 which is pivotally mounted at 57 on the die 'head, so as to "turn concentrically withthe center of the die-means; and feed -means"5'8 adapted to engage the stock strip 59 to feed the same forward from the reel 55, and operated by a rod 62 connected to the bell crank 45.

The work supporting means comprises a support '66 and a work holder 67 adapted to extend between said support and the die means, for holding and supporting the work during side stapling. The support 66 is formedas a bar mounted to slide vertically in a guideorbearing68'inpillar 3, and connected by a rod 69 to-a 'llnk 70, said link being pivotally connected to one arm of a bell crank '72, pivoted at 72 in the base 1. The pivot 73, connec'ting*the support 66 to rod 69,=the pivot 74 connecting the rod 69 to link :and the pivot 75 connecting the said link to the bell crank 72 are normally all substantially in line, so that they are on dead center. A spring 77 connected to rod 69 and to the pillar 3tends to drawsaid rod upwardly and also to draw said rod to position to cause the'link 70 to bear and ride on a stop means'78 formed as a projection on an arm 79 carried by a shaft 80 which extends through the wall of base 1 and is provided outside of said base with a pedal "82. A stopscrew 83 isprovided for engaging the arm 79 to adjust the stop means78 to proper position. Rod 69 and link 70 constitute a toggle which is normally held straight by spring 77. Bell crank 72 is connected by rod 85 to one arm of a bell crank 86 pivoted in the base 1 and having its other arm connected to a rod 87 which extends upwardly within pillar 2, and is guided at its upper end by a link 88 pivoted at 89 to the pillar 2, and pivotally connected to rod 87 by a pin 88'. Said pin 88' extends through said rod 87 and projects through slots 90 in a head 91, which is mounted to slide on the upper end of rod 87, and carries a roller 92 adapted to engage the cam 23 on the member aforesaid. A spring 97 connected to rod 87 and to pillar or pedestal 2, tends to draw said rod upwardly so as to constantly hold roller 92 in engagement with cam 23. Spring 93 is compressed between a shoulder 94 on head 91, and a screw collar 95 on rod 87. The pin 88 passes through rod 87 and also through slots 90 in head 91, and limits the motion of head 91 on rod 87, and the spring 93 which is set at any desired tension by collar 95 on rod 87 is compressed according to the thickness of the material being stapled.

The work holder or intermediate work support 67 is preferably detachably mounted on the die head 5, so asto enable it to be removed when the end of a box is to be stapled, and it is movably mounted so as to be pressed upward by the work support. Said work holder may consist of a plate having a flange 101, extending upwardly and then over the plate 67, and connected to a vertically extending plate 103, pivoted at 10-1 to an angle member 105, which is carried by a bracket 106 removably attached to the die head 5 by screw 108 and dowels 109. Plate 103 has a slot 110 engaged by a bolt 111 on angle member 105 to guide the work holder in its vertical swinging movement on pivot 10 1. A portion 112 of plate or work holder 67 extends beyond the flange portion 101, and directly under the die means, and is provided with recesses or depressions 113 for receiving the ends of the staple prongs and bending them to clenoh them on the work.

. The operation is as follows: In the normalposition of the parts, shown in Fig. 1, the clutch meansengages the shaft 6 from driving pulley 8, so that said member and the parts operated thereby are at rest. The die members 26 and 30 are in most elevated position, and the forward end of the stock strip 59 extends within the slit 36 in the anvil member 33, in position beneath the said die members. a The toggle 50, 51 in the operating connection for the die member 26 is straight, and the arm of the bell crank 45 which is connected thereto is raised. Assuming that the machine is to be used for side-stapling boxes, the work holder 67 will be in position between the work support 66 and the die means,'being supported by engagement of the upper end of slot 110 with the bolt 111 on the angle member 105, so as to leave room both below and above it, for insertion of the box-blank. If more room is required for conveniently inserting the lower side for folded boxes, it is obtained by depressing the pedal 82, which bends toggle 69, so as to temporarily lower the work support 66. The driving means 91 for operating the toggle 69, 70 to force the work holder against the work, being normally inoperative, and being only brought into operation when the machine is started in operation, does not resist or interfere with this collapsing of the toggle or with the return of the toggle to straight position. The box blank may consist of paper or board, bent to form the sides of the box, and is placed over the work holder as indicated in dotted lines at 117 in Fig. 14, so that one edge portion extends under the projecting and overhanging flange 101, and the other edge portion extends over said flange, and said edge portions overlap at the part which is beyond the end of said flange, and rest on the extension 112 of the plate or work holder 67, and are directly under the die means. The member 67 is of suflicient length to serve as a guide for the box blank while it is being fed forward by hand to position for insertion of successive staples. The operator having inserted the box blank as stated, presses on the pedal 21, thereby lifting rod 17 and lever 15, whereupon spring 13 forces the pin 11 toward the driving pulley 8, and when, in the rotation of said pulley, one ofthe holes 12 therein comes opposite said pin, the pin will enter said hole and will clutch the member 9 to the driving pulley. Actuating memher 9 will then rotate and as the cam 23 connected thereto starts to turn, it depresses roller 92 and operates through head 91 spring 93 collar 95 rod 87 bell crank 86, rod and bell crank 72 to lift the link 70. The toggle constituted by said link and by the rod 69 being at this time straight, it is lifted bodily and the bar 66 constituting the work support is raised so as to engage the bottom of the lower side of the box blank and to raise the box blank and the work holder or intermediate work support 67 until the said work holder and box blank are clamped tightly between the work support 66 and the bottom of the die head. In this operation the head 91 operates as a reciprocating driving means, for bringing the work support up against the work, and the spring 93 operates as a yielding connection, enabling the work support to yield under extra thickness of work and to automatically adjust itself to the thickness of the work, without requiring any adjustment of the die head. The rotation of member 9 also operates through eccentric 22 and rod 47, to turn bell crank 45 so that its front arm descends, and in this movement the toggle 50, 51 and the link 44: respectively move the die members 30 and 26 down together, until the prongs 28 on the male die member 26 have cut and bent down a portion at each side of the strip to form the prongs of the staple 115115, as in my prior application aforesaid. In this operation the anvil 34- serves as a support for the interme diate portion of the end of the strip, while its side portions are being bent down as stated. At the moment when this operation has been completed the forward arm of the bell crank 45 has descended sufficiently to bring the knuckle pivot 5 1 of toggle 50, 51 against trip means l9, and the toggle is thereby kicked over to position shown in dotted lines in Fig. 3, so that in the further descent of said forward arm of the bell crank said toggle will bend farther and the die member will not be moved farther, but the severing die 30 will descend farther and will first sever the staple and engage the inclined face portion 38 to push back the anvil 34 out of the slot 29, so as to permit the sev ered staple to be pushed by the same die 30 through said slot and to be driven into and through the work. In this driving action the inclined face portion 40 of the anvil member 33 engages under the staple so as to furnish a yielding support therefor, which gradually recedes as the staple descends, and prevents the staple from buckling inwardly, as it is being driven into the work. As the cam 23 and eccentric 22 complete their rotation, the work support 66 is drawn down by the operation of spring 97 on rod 87, and the die means 26 and 30 are restored to normal position by operation of bell crank 45. The operator then moves the box-blank forward to position for fastening another staple, and the operation is then repeated automatically. In this operation a row of staples is fastened through the overlapping edge portions of the box blank, the staples being clenched by turning over in the recess 113 in plate or work holder 67. \Vhen the operation is completed, the operator releases pedal 21 and the rod 17 and lever 15 fall by gravity to normal position, and when in the ensuing rotation of pulley S, the inclined face of pin comes against the inclined face 15 of lever 15, said pin is pressed back out of the hole 12 with which it has been in engagement, and comes to rest against a shoulder 14 on lever 15.

For fastening an end of the box, the work holder 67 is removed and the box blank is placed over the work support 66 as indicated in dotted lines in. Fig. 15, the pedal 82 being at this time pressed so'as to bend the toggle 69, '70, by the operation of the stop means 78, as indicated in dotted lines in Fig. 1 andthereby lower the work support sufficiently to enable insertion of the box endwise thereover. The pedal 82 is then released and the spring 7 7 returns the toggle 69, 70 to straightened position and lifts the work support to normal position, ready for the automatic operation which then proceeds substantially as above described, under the control of the pedal '21.

IVha-t I claim is:

1. In a stapling machine, the combination with staple forming and driving means, of a work support, normally inoperative means for'operating said work support toward and from said staple forming and driving means, and a collapsible connection between said work support and its operating means, to enable the distance between the Work support and the forming and driving means to be temporarily increased.

2. In a stapling machine, the combination with staple forming and driving means, of a work support, normally held away from said forming and driving means, operating means for reciprocating said work support toward and from said forming and driving means, said operating means, including a collapsible connection, ,and means for normally holding said collapsible connection extended.

3. In a stapling machine, the combination with staple forming and driving means, of a work support, a reciprocating driving member, an intermediate reciprocating member, a yielding connection between said driving member and said intermediate member, a collapsible connection between said intermediate member and said work support, means for normally holding said collapsible connection extended, and means for collapsing said connection.

4. In a stapling machine, the combination with staple forming and driving means, of a worksupport, a toggle connected to said work support, reciprocating driving means connected to said toggle to move said work support toward and from the staple forming and driving means, means for normally holding said toggle extended and means for bending said toggle to collapse the same.

5. In a stapling machine, the combination of a fixed head, staple forming and driving means mounted therein, a reciprocating work support, driving means for operating said work support toward and from said fixed head, said driving means being provided with a yielding connection to enable the work support to adapt itself to difierent thicknesses of work when it is operated against the work, and a work holder between the work support and the said fixed head, said work holder being movably mounted to be moved toward the said fixed head by the pressure of the work support.

6. In a stapling machine, the combination of a fixed head, staple forming and driving means mounted therein, a reciprocating work support, driving means for operating said work support toward and from said fixed head, and a work holder between the Work support and the fixed head said work holder being movably mounted to be moved toward the fixed head by the pressure of the work support.

7. In a stapling machine, the combination of staple forming and driving means, a work support, means for moving the work support toward the forming and driving means, a work holder extending between the work support and the forming and driving means and movably mounted to be moved toward the forming and driving means by the pressure of the work support, and said work holder being removable to enable the work support to be used for direct support of the Work.

8. In a staple forming machine, the combination of a die-member provided with cutting and forming dies, for cutting and bending the prongs of the staple, a severing die, an operating member, a link connecting said operating member to the severing die, a toggle connecting said operating member to said first named die member, a spring engaging said toggle to hold it normally extended, and trip means located in the path of a portion of said toggle to bend the toggle so as to disable it as an operating medium for said die member, when said operating member has partially completed its stroke.

9. In a staple forming machine, the combination with staple forming die means, of operating means therefor comprising a normally extended collapsible toggle, and means for engaging said toggle at a point in the stroke of said operating means, to forcibly bend and collapse the toggle.

10. In a stapling machine, the combination of staple forming die means, staple driving means, an operating member, means connecting said operating member to the staple driving means, means connecting said operating member to the staple forming die means and comprising a normally extended toggle, means for forcibly engaging said toggle to collapse the same at a point in the stroke thereof, and stop means for arrestin the movement of said staple forming die means.

11. In a stapling machine, the combination' with staple-forming die-means, of staple severing means, operating means for said severing means, a collapsible toggle connection between the said operating means and the staple-forming die-means, a spring for normally holding said toggle connection extended, trip means engaging said toggle connection to bend the same on completion of the operation of said die-means, and stop means for arresting said die means when its operation is completed.

In testimony whereof I have hereunto set my hand, at Los Angeles, California, this 31st day of August, 1915.

LOUIS B. GIRARD.

copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents. Washington, D. G.

Images