US1601184A - Stapling machine - Google Patents

Description

Sept. 28 1926. 1,601,184

E. H. MICHENER STAPLING MACHINE Filed August 23, 1924 4 Sheets-Sheet 1 IN VEN TOR Jwwweww MW- '3.

A TTORN Sept. 28 1926.

E. H. MICHENER STAPLING MACHINE Filed August 23, 1924 4 Sheets Sheet 5 i 7 2 INVIISNTOR: gluon-d. k Y

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Sept. 28 1926.

E. H. MICHEN ER S'IAPLING MACHINE Filed August 23, 1924 4 Sheets-Sheet 4 2a 9 INVENTOR;

. and the combinations of I inachlne embodying machine in different positions thereof dur-' Patented Sept. 2a, 1926.

ELWOOD H. MICHENER, OF WOODLYNNE, NEW JERSEY, ASSIGNOE TO ACME STAPLE COMPANY, or CAMDEN,

NEW JERSEY, A GOR PORA'I'ON OF NEW JERSEY STAPLIN G MACHINE.

Application filed August 23, 1924. Serial No. 783.815.

This invention relates to improvements in staple setting machines.

An object of the invention is to provide novel, simple and efiicient means for actuatin the staple driver and for moving the stap e supplying and guiding devices to and from the stapling position; another object of the invention is to provide a novel and advantageous means for preventing the buckling of the staple legs durin the staple setting operation; and another 0 ject of the invention is to provide new and improved means for supporting and for actuating the staple clinching devices.

With the foregoing and related objects in view, my invention consists of the elements them hereinafter described and claimed.

In the accompanying drawings, illustrating the invention,

Figure 1 is a front view of a stapling my invention.

Figure 2 is a side view thereof omitting certain small parts shown in other larger views.

Figure 3 is a side view partly in section, of the upper portion of the machine, showing' the parts in the normal position.

Figures 4 and 5 are side views of the Tipper portion of the machine, partly in section and omitting certain parts, showing parts of the ing the stapling operation.

Figure 6 is a top view of the machine.

Figure 7 is a sectional detail, as seen from the front of the machine, showing the work supports and a part of the frame of the machine.

Figures 8 and 9 are horizontal sections through the machine on lines 8-8 and 99, of Fig. 5, respectively.

Figure 10 is a front view of the pivoted member carrying the staple guiding and driving devices, with the front plate and other parts removed and showing the lever which actuates the staple driver in section.

Figures 11 and 12 are vertical sections through the pivoted member and parts carried thereby, Fig. 10, respectively.

' Figure 13 is a horizontal section through the pivoted member and parts carried thereby, on line 13-13 of Fig. 11.

on lines 1111 and 1212 of to the bar 25 extending lugs 5,

of parts 6 of a saddle-back I work-supporting table 7 which is detachably secured to frame casting 2 by screws 14 extending through the lugs 5 and screwed into The ends of the table 7 are provided with laterally extending lugs 15 below the top thereof, and seated on the horizontal bottom surfaces of lugs 16 which areformed on and extend downwardly from the end portions of a horizontal work-su porting table 17 having a slot 18 therein whlch receives the top of the saddle-back table 7 when the horizontal table 17 is in place upon. the lugs 15. The horizontal table 17 is detachably secured to the saddleback table 7 by screws 19 which extend through openings in the lugs 15 and are screwed into the lugs 16.

The central portion of the table 7 has a slot or opening 20 therein in which are arranged two staple clinching arms 21 which are pivoted to the table 7' The arms 21 are supported in the position shown in Fig.

to act as an .anvi' for the preliminary clinching of the staple legs when they are driven against the arms,

arms 21 are raised by mechanism hereinafter described to effect the final clinching of the ing 2. One side of the member 22 is grooved, forming a magazine 24 for staples, and the magazine is provided with a longitudinallyextending guiding rib or bar 25 for receiving and guiding the staples 26 into a channel 27 which extends up and down transversely and which is formed by the forward end wall of the bar 25 blocks 28 and 29, one 29 of which is secured to the member 22 by screws, as shown in and, thereafter. the

and by two Fig. 12, and the other 28 of which is held between the block 29 and a front plate 30 secured to the forward end of the member 22. The lower ends of the blocks 28 and 29 form a nose 31 which extends downwardly from the member 22 and through which the channel 27 extends. The lower end of the channel 27 is open and the channel is adapted to be brought substantially into vertical alinement with the staple clinching arms 21 when the member22 is moved on its pivot 23 to the position shown in Fig. 4.

The staples 26 are fed forwardly on the iding bar 25 toward and against the front wall 32 of the channel 27 by a suitable follower 33 which embraces and is slidably fitted to the guiding bar 25 and which is attached to one end of a spring 34. The,spring 34 extends from the follower 33 to and around a pulley 35 and through an opening in the member 22 to a lug on the opposite side of the member 22 to which the other end of the spring is attached. The spring 34 acts to move the row of staples 26 toward and against the wall 32. The distance between the wall 32 and the forward end of the bar 25 is equal to the thickness of a staple.

A staple driver in the form of a plate 36 is fitted to slide in the channel 27 toward and from the clinching arms 21. The staple driver 36 is secured to and it extends downwardly from a bar 37 which is fitted to slide within an upwardly extending limb 38 on the forward end of the member 22.

During the staple setting operation hereinafter described, the bar 37 is moved down and up to reciprocate the staple driver 36 within the channel 27; and at each downward stroke of the driver 36 from the position shown in Figs. 10, 11 and 12, the lower end thereof engages the foremost staple of the row 26 thereof fed against the wall 32 and drives the staple downwardly through the channel 27.

The bar 37 is pivotally connected to the forward end of an arm 39 of 'a lever 40 which is fulcrumed, at 41, on the member 22 and which includes a rearwardly and downwardly extending arm 42 hereinafter referred to. The forward end of the lever arm 39 is bifurcated and embraces the limb 38 of the member 22 and it is pivotally connected to the bar 37 by a pin or screw 43 which extends through an opening in the bar 37 and through vertical slots or openings 44 in the sides of the limb 38.

The lever arm 39 is raised relatively to the member 22 to raise the bar 37 and staple driver 36 within the channel 27 by a spring 45 which encircles a rod 46. The upper end portion of the rod 46 slides through an opening in a lug the lower end of the rod 46 is seated in a socket in a lug 48 on the member 22. The

47 on the lever arm 39 and spring 45 acts between a collar 49 on the rod 46 and the lug 47 on the arm 39 to raise the lever arm 39, and the upward movement thereof relatively to the member 22- is liniited by the engagement of the pivot pin 43 with the upper end walls of the slots 44 in the limb 38.

It will now be understood that the lever arm 39 may be depressed relatively to the member 22 against the action of the spring 45 to actuate the staple driver 36, and. that normally the spring 45 holds the pivot pin 43 in engagement with the top walls of the slots 44, so that the lever 40 and member 22 may be moved as a unit from the position shown in Figs. 2 and 3 to the position shown in Fig. 4 and back again.

The lower end of the downwardly extending arm 42 of the lever 40 is connected to a toggle-joint 50 comprising two arms 51 and 52 centrally pivoted, at 53. The rearward end portion of the toggle arm 52 is pivoted. at 54. to the lower end of the lever arm 42, and the forward end portion of the toggle arm 51 is pivoted. at 55, to an arm or lever 56, presently described. The central portion of the toggle-joint 50 is pivotally connected, at 53, to the upper end of a link bar 57 whose lower end is pivoted, at 58. to a foot lever 59 which is fulcrumed, at 60. on a rod or shaft extending between and scoured to the lower portions of the side frames or legs 3. The arm 56 to which the forward end of the toggle joint 50 is connected is pivoted. at 61, to the casting 2 and it is provided with a rearward extension 62 which is connected by a link 63 to the upper end of a helical spring 64. The lower end of the spring 6% is connected to the foot lever 59 y a link 65. The spring 64 tends to more the lower portion of the arm 56 forwardly. and the forward movement of the arm 56 is limited by an adjustable head 66 screwed on to a bolt 67 and engaging the lower portion of the arm 56 through which the bolt (37 freely extends. The bolt 67 is carried by a bracket 68 arranged between the side frames 3 and having alined trunnions 69 pivoted therein.

The spring 64 holds the arm 56 against the head 66 so that the axis of the pivot 5 of the forward end of the toggle-joint 5 remains fixed during the operation of the machine in setting staples. as will be hereinafter described. The spring 6t also CXQllr'. an upward pull on the foot lever 59. link bar 57 and central pivot of the togglejoint 50, causing the toggle-j int to draw the lever arm 42 forwardly until it eugagc= e stop lug 70 on the frame casting 2 and limits the upward movement of the foot lever 59, link bar .57, toggle-joint pivot 53. lever arm 39 and pivoted member T has the parts iust referred to are held by the spring 64 normally in the position shown in Figs. 2 and 3.

The staple clinching arms 21 hereinbefore referred to rest normally upon the ,top of a. vertically-arranged elongated plate '71 which is slidably fitted within the limb 4 of the frame casting 2 to be moved vertically therein. The upper end portion of the plate 71 has outwardly-extendin projections 72 thereon which rest upon t e top of the limb 4 and support the plate 71. The lower end portion of the plate 71 is connected to the forward end portion of the arm 7 3 of a lever 74 which isfulcrumed on the pin forming the forward pivot 55 of the toggle-joint 50. The sides of the forward end portion of the lever arm 73 have laterally-extending ribs 74 which are embraced by the bottom corner portions of the plate 71 as a suitable means to connect the plate 71 and lever arm 73 to cause them to be raised and lowered together and to cause the plate 71 normally to support the lever arm 73. The rearwardly extending arm 75 of the lever 74 is arranged beneath a part 76 of the toggle arm 51 butspaced therefrom when the parts are in the normal position shown in Fig. 3, so that when the toggle arm 51 is lowered to the position shown in Fig. 5, the part 76 will engage the lever arm 75, and, thereafter the final downward movement of the toggle arm 51 will cause the part 76 thereof to operate the lever arm 75 to raise the plate 71 and therewith the staple clinching, arms 21 to effect the final clinching of the staple, as will be presently described.

The work, indicated at 77, to be stapled is placed upon the table 17, as shown in Figs. 3, 4 and The foot lever 59 is then depressed against the action of the spring 64 to efi'ect the setting of a staple in the work 77. During the initial downward movement of the foot lever 59, the link bar 57 pulls the central pivot 53 of the toggle-joint 50 down from the normal position shown in Figs. 2 and 3, thereby operatingthe lever 40 to move it and the member 22 as a unit on the pivot 23 to move the member 22 down to the position shown in Fig. 4 or until the nose 31 strikes the work 77 and prevents further downward movement of the member 22. The continued depression of the foot lever 59 now moves the central toggle pivot 53 down to the position shown in Fig. 5, and thereby moves the lever 40 relatively to the member 22 and causes it to move the staple driver 36 downwardly through the channel 27. As the staple driver 36 is thus moved downwardly itengages the foremost staple of the row 26 and drives it downwardly through the channel 27 nd into and through the work 77,

and drives the free ends of the staple legs against the staple clinching arms 21 which direct the freeends of the staple legs inwardly and upwardly toward the bottom of the work 77. Following this operation, while the foot lever 59 is being depressed to pivot 53 is thereby moved the arms 21 and causes them to press the free ends of the staple legs up against the bottom of the work 77, thereby completing the setting of the staple. This done} the foot lever 59 is released, the spring 64 returns the toggle-joint 50, the lever 40 and parts operatedthereby to the normal position, and the lever 74, plate 71 and clinching arms21 return to the normal position by gravity, for a succeeding staple setting operation.

The machine is designed to be adjusted to set staples in work of different thicknesses,

and staples with legs of different lengths are employed to compensate for the different thicknesses in the work. In stapling work of different thicknesses the nose 31 is stopped by the top of the work in different horizontal planes for the different thicknesses of the work, and the staple driver is always moved the same distance relatively to the pivoted member 22 for all thicknesses of work. Each stapling operation is completed when the toggle-joint reaches its final position in which its central pivot 53 is substantially on a straight line which passes through its end pivots 54 and 55; therefore, it will be understood that it will be necessary to adjust the toggle-joint so that. in its normal position, its two endpivots 54 and 55 will be closer to gether and its central .pivot 53 raised to give the proper throw to the lever 40 and member 22 when the thickness of the work is decreased, and that it will be necessary to reverse this adjustment when the thickness of the work is increased. For effecting this adjustment. the pivoted arm 56 is provided, constituting a toggle-joint adjusting arm, which is held at all times against the adjustable head 66 by the spring 64. When it is desiredto adjust the machine for stapling work of decreased thickness, the head 66 is turned inwardly on the bolt 67 by hand, thereby moving the arm 56 against the action of the spring 64 to move the toggle-joint pivot 55 toward its pivot 54 and thereby raise its central pivot 53, and, when it is desired to adjust the machine for stapling work of increased thickness, the head 66 is turned outwardly on the bolt 67 by hand, thereby permitting the spring 64 to move the togglejoint pivot 55 away from its pivot 54, and thereby lower its central pivot 53.

Arranged laterally adjacent and parallel to the staple receiving and guiding bar 25 of the magazine 24 is a bar 78 which is' bars 25 and 78 as they are secured to the member 22 by means of screws 79, as shown in detail in Figs. 10, 11, 13 and 14. The holes in the bar 78 through which the screws 79 extend are sufficiently large to permit the bar 78 to be set in en gagement with the bar 25, as shown in Figs. 10 and 13, or to be set in a position spaced therefrom a distance slightly greater than the thickness of a staple leg, as shown in Fi 14. The upper corner of the forward en of the bar 78 is beveled, at 80, as shown in Figs. 10, 11, 13 and 14, for a purpose presently described. \Vhen staples with legs shorter than the distance between the top of the bar 78 and the top of the bar 25 are used, the bar 78 is set over against the bar 25, as shown in Fig. 10 and 13, and the beveled portion 80 acts as a cam to direct the short staple legs into the channel 27, and, thereafter, the forward end of the bar 78 prevents them from leaving the channel 27 until after the lower ends thereof pass the bottom of the bar 78 and are maintained within the channel 27 by the forward face vof the block 29, as they are driven downwardly within the channel 27 by the staple driver 36. When staples with legs longer than the distance between the top ofthe bar 78 and the top of the bar 25 are used, the bar 78 is set in a position spaced from the bar 25, as shown in Fig. 14, to permit the legs of the staples to ass between the fed along the bar 25 to the channel 27, and beveled portions 81 of the block 29 act as a cam to direct the long staple legs into the channel 27.

To support the crown of the staple and prevent the buckling of the staple legs within the channel 27 during the driving of the staple through the work, I provide the following:

Pivoted, at 82, on the front plate 30 of the member 22 is the upper end of an arm or element 83 whose lower end is provided with two spaced, parallel, blade-like parts 84 which enter slots in the blocks 28 and 29 and traverse the staple guiding channel 27. The inner ends 85 of the parts 84 are beveled or inclined, as shown in Fig. 11, and the arm or element 83 is movable on its pivot 82 to move the parts 84 into and from the channel 27. The arm 83 and parts 84 are held normally in the position shown in the drawings by a sprin pressed rod 86 (Fig. 6) having an arm 87 on the forward end thereof which engages the arm 83. The rod 86 is mounted to slide and to turn in suitable bearings on the member 22, and it is pressed inwardly by a spring 88 which encircles the rod 86 and acts between one of the bearings for the rod and a collar 89 secured on the rod. The arm 87 of the rod 86 rests normally within a groove in the arm 83 and exerts a yielding inward pressure against the same. The distance between the outer lateral surfaces of the parts 84 is substantially equal to the space between the legs of the staples. When the staples are driven downwardly within the channel 27 the staple legs straddle the parts 84 and the staple crowns engage the'upper portions of the beveled inner ends 85 of the parts 84 before the free ends of the staple legs enter the work 77 to be stapled; and, thereafter, the staple crowns, acting against the beveled ends 85 of the parts 84 force them outwardly from the channel 27, against the action of the spring 88, as the staples are driven into and through the work 77. It will thus be seen that as the staple legs are driven into and through the work they are supported substantially throughout their lengths against buckling by the sides of the parts 84, and that the tops of the parts 84 support the staple crowns during the driving thereof.

The parts 84 serve to prevent accidental downward displacement of the outer block 28 from its position between the inner block 29 and the front plate 30; and, by disengaging the arm 87 from the notch in the arm 83, and turning the arm 87 and rod 86 on the axis of the rod 86 to move the arm 87 from its position in front of the arm 83, the arm 83 is freed to permit it to be moved outwardly on its pivot to free the block 28 and permit its easy removal from the machine for clearing the channel 27 of defective or jammed staples.

I claim as my invention:

1. In a staple setting machine, the combination of a supporting frame, staple clinching means supported thereby, a member having a staple guiding channel and pivoted on the frame to move toward and from the clinching means, a staple driver guided in the member and adapted to co-operate with the clinching means to set a staple, a lever having a pivotal movement relative to the frame, means connecting the lever and the member, means connecting the lever and the staple driver, one of said connecting means being yieldable and permitting the lever to move the driver relatively to the member, a toggle-joint having one end portion thereof pivotally connected to the frame and the other end portion thereof pivotally connected to the lever, means operable to actuate the toggle-joint first to operate the lever to move the member toward the clinching means and thereafter to move the staple driver to set a staple, and means operable to vary the distance between the pivoted end portions of the toggle-joint in the normal position thereof to vary the throw of the lever as operated by the toggle-joint actuating means.

2. In a staple setting machine the combination of a supporting frame, staple clinching means supporting thereby, a member having a staple guiding'channel and pivoted on the frame to move toward and from the clinching means, a staple driver guided in the member andadapted to co-operate with the clinching means to set a staple,ra lever having a pivotal movement relative to the frame, means connectingthe leverand the member, means connecting the leveriand the staple driver, .one of said connecting, means being yieldable and permittin thelever to movethe driver relatively to tie member, a toggle-joint having one end portion thereof pivotally connected to the frame and the other end portion thereof pivotally connected to the lever, a lever fulcrumedon the frame, and a link connecting the last named lever and the toggle-joint. 7 I v 3. In a staple setting machine,.the combination of a supporting frame, staple setting.

mechanism including a staple driver and a lever connected thereto for actuating the same, an arm pivoted to the frame, a togglejoint having one end portion thereof pivoted to the lever and the other end portion thereof pivoted to the arm, means operable to actuate the toggle and thereby cause-it to operate the lever and staple driver, and means operable to adjust the arm to vary the disrection.

tance between the pivoted end portions of the toggle-joint in the normal position thereof to vary the throw of the lever as operated by the toggle-joint actuating meansf v l 4. In a staple settingmachine, the combimechanism including a staple driver and a lever connected thereto for actuating the same, an arm pivoted to the frame, atogglejoint having one end portion thereof pivoted to the lever andthe other end portion thereof pivoted tothe arm, means operable to actuate the toggle and thereby cause it to operate the lever and staple driver, and means operable to adjust the arm to vary the distance between the pivoted end portions of the toggle-joint in the normal position thereof to .vary the throw of the lever as operated by the toggle-joint actuating means, the last named means comprising abolt having an adjustable head thereon engaging the arm :for moving it-in one direction and a spring holding the arm against the head and arranged to move the arm in the opposite di- -5. In a staple" nation of a supporting frame, staple setting mechanism including a staple driver'and a toggle-joint for actuatin the same, a togglejoint adjusting i arm pivoted to the toggle-joint and pivoted to the frame, means operable to set said arm in different positions ofad'ustment, a foot lever fulcrumed on the rame, a-linkconnectingthe foot lever and the toggle-joint, and a spring connecting said am and the foot lever and acting to hold the arm against said means clinchin setting machine, the combiy and to hold the foot lever yieldingly in its staple clinching means and :fOl moving the staple driver relatively to the member,

means operated by'the toggle-joint for operating the staple clinching means, and means connected to the toggle-joint and operable to actuate the same.

'7. In a staple setting machine,the combi-- nation of a supporting frame, a member ivotedon the frame, a staple driver guided by the member, staple clinching means, a toggle-joint, means actuated by'the to gle-joint for moving the member toward t e staple clinching means and for moving the staple driver relatively to the member,-means operated by the toggle joint for operating the staple clinching means, a foot lever fulcrumed on the frame, and a link connecting thetOggle-joint and the foot lever, ,5

8. In a staple setting machine, the combi' nation of a supporting frame, staple driving means, staple clinching means, a 'toggleoint, means actuated by the toggle-joint for operating the.v staple driving means, a lever arm fulcrumed co-axially with one of the outer pivots of the toggle-joint, means actuated by the lever for operating the staple clinching means, the toggle-joint having a part adapted to engage and actuate the lever arm fulcrumed co-axially with one of the outer pivots of the toggle-joint, means actuated by the lever for operating the staple means, the toggle-joint having a art a apted to engage and actuate the ever when the toggle-joint is actuated, a foot lever fnlcrumed on the frame, and a link connecting the toggle-joint and the foot lever.

10. In a staple setting machine, the combination of a supporting frame, staple setting mechanism including a staple'driwr and a toggle-joint for actuating the same, atogglejoint adjusting armpivoted to the togglejoint and pivoted to the frame, a lever-fulcrumed on said arm co-axially with the pivotconnecting the arm and the tog'le-joint the foot lever and the toggle-joint, and'a fee - said channel, a staple spring connecting said arm and the foot lever and acting to hold the arm against said means and to hold the foot lever yieldingly in its normal position.

11. In a staple setting machine, nation of a supporting frame, staple setting mechanism including a stap e driver and a toggle-joint for actuating the same, staple clinching means, a lever arm fulcrumed c0- axially with one of the outer pivots of the toggle-joint, means actuated by the lever for operating the staple clinching means, the toggle-joint having a part adapted to .engage and actuate the lever when the togglejoint is actuated, a foot lever fulcrumed on the frame, a link connecting the toggle-joint and the foot lever, and a sprin holding the toggle-joint and the foot lever 11]. the normal position.

12. In a staple setting machine, the combination of a supporting frame, a member having a staple guiding channel therein, a driver operable to drive a staple through guiding bar for receiving and guiding staples into said channel, and a. bar laterally adjacent to the first named bar arid having a beveled portion for directing the free end of a staple leg into said channel as the driver moves the staple within the channel.

13. In a staple setting machine, the combination of a. member having a staple receiving and guiding channel therein, a driver operable to drive a staple through said channel, an element movably mounted on said member and having parts movable therewith into and from said channel, said parts being adapted to extend into said channel between the legs of a staple therein to supthe combi port parts of the staple during the driving thereof, and a spring ressed, longitudinally movable rod mounte on the member and. having an arm engaging said element and holding the said parts thereof yieldingly within said channel, and means to effect the movement of said parts from within said channel during the driving of the staple.

14. In a staple setting machine, the combination of a member having a staple receiving and operable to drive a staple through said channel, an element pivotally mounted on said member and having parts movable therewith into and from said channel, said parts being adapted to extend into said channel between the legs of a staple therein to support parts of the staple'during the driving thereof, a spring pressed rod mounted on said member to move longitudinally and to turn, an arm extending laterally from the rod and engaging said element and holding the parts thereof yieldin ly within said channel during the drivin o the staple.

15. n a staple setting machine, the combination of a supporting frame, staple clinching arms pivoted in said frame, a member having a channel therein for guiding a staple toward said arms, a driver operable to drive a staple through said channel, means operable to actuate said arms to clinch a staple, said frame having laterally extending lugs provided with horizontal top surfaces, a work supporting table having parts provided with horizontal bottom surfaces seated on said top surfaces, and means to detachably secure said table and said frame together.

ELWOOD H. MICHENER.

guiding channel therein, a driver 1

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