US1215312A

US1215312A - Wire-stitching machine.

Info

Publication number: US1215312A
Application number: US84643214A
Authority: US
Inventors: Joseph Pagliarul
Original assignee: JOSEPH E SMYTH
Current assignee: JOSEPH E SMYTH
Priority date: 1914-06-22
Filing date: 1914-06-22
Publication date: 1917-02-06
Anticipated expiration: 1934-02-06

Description

Patented Feb. 6, 1917.

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1. PAGLIARUL.

WIRE STITCHING MACHINEL. I APPLICATION nuzo JUNE 22.

1914' Patented Feb. 6, 1917 5 SHEETS-SHEET J. PAGLIAHUL.

WIRE STITCHING MACHINE.

APPLICATION FILED JUNE 22. 1914.

Patented Feb. 6, 1917.

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J. PAGLIARUL.

WIRE STITCHING MACHINE, APPLICATION FILED JUNE 22. I914.

1,215,312. Patented Feb. 6,1917.

5 SHEETS-SHEET 4- J. PAGLIARUL.

WIRE STITCHING MACHINE.

APPLICATION FILED JUNE 22, 1914.

1,215,312. 7 Patented Feb. 6,1917.

5 SHEETS-SHEET 5- 7/0maae/ 1W m: mwms Fsrsns (JO-1FNUYO-LIYNDNWASNINOIOIL n JOSEPH PAGLIARUL, OF CHICAGO, ILLINOIS, ASSIGNOR T0 JOSEPH E. SMYTH, OF CHICAGO, ILLINOIS.

WIRE-STITCHING MACHINE.

Specification of Letters Patent.

Patented Feb. 6, 1917.

Application filed June 22, 1914, serial No. 846,432

To all whom it may concern:

Be it known that I, JOSEPH PA GLI ARUL, a citizen of the United States, residing in the city of Chicago, countyof Cookand State of Illinois, have invented certain new and useful Improvements in Wire-Stitching Machines, of which the followingis a specification. r

My invention relates to improvements in wire stltchlng machines and refers more particularly to wire stitching machines employed for stitching together sheets of paper forming books of varying thicknesses.-

Among the salient objects of the invention are, to provide an improvedwire stitching machine in which'the legs of the stapleare at all times of equal length, whatever may be the length of the staple being used;- to provide a construction-of the class described in which the cutting-oil mechanism may be adjusted to cut ofi? varying lengths of wire to form the staple, while with'the same motion the wire feed is adjusted to feed forward a wire having an increase or decrease in length equal to twice'the amount ofinovement of the adjustable cutting device; to provide an improved adjustment for the wire-feeding mechanism which will permit of an extremely fine adjustment of the'forward feed of the wire, while at the same time the ratio between the adjustment of the cutting mechanism and. the wire-feeding mechanism is unchanged to provide an improved cutting-ofi' mechanism which will permit of the ready removal; and replacement of parts subject to Wear or disarrangement; to provide an improved construction to positively hold the-wire whilethe-staple length is being cut oil to provideimprove'd mechanism for paying 0E the raw wire from the feed spool while'said feed spool is subjected to a positive braking effect independent of the amount of wire on said spool; to provide an improvement in the forming mechanism which will prevent the improper accidental cuttingofi of the end of the wire blank due to lack of straightness of the wire; and, in general to provide an improved wire stitching machine of the chars Figure l is a .front elevation of the ma- Fig. 3 is an'enlarged fragmentary view 'chineasa whole showing the principal op- V of a portion of Fig. 1 showing the cutting.

Fig.4 is "a reverse view of a portion of Fig. 1 showing the staple length adjusting mechanism; Fig. 5 is a fragmentary section taken along the-line 55 of Fig. 3; Fig. '6 is a View in elevation of a portion of the cutting off unit removed from the machine; 1

Fig. 7 is a sideview of Fig. 6;

i Fig. 8 is a section taken-along the line Fig. 9 is a section'taken in plan along the line 9 9 of Fig. 4;

Fig. 10 is a sectional view taken along the line 1010 of Fig. 1; and Fig. 11; is an undersideview of Fig. 10

partly in. section taken along the line 1111..

Referringto the drawings, 1 represents the frame of the machine to the front of which' is secured the flat upstanding casting 2 upon which are mounted the various mechanisms'to be described. 3 is the stitching saddle of the machine below which is arranged the leg-bending or crimping mechanism, which is not shown but may be of any particular type desired, as it forms no part of my present invention. The machine as a whole is driven by means of a pulley 4c towhich'iskeyed the shaft 5 journaled in the frameI and the casting 2 and projecting through the latter. 7

To the upperpart of the casting 2 is secured an upstanding bracket arm6 which carries the spool. 7 with its associated braking mechanism the spool itself being journaled upon al'horizontal pin 8 fixed in the 7 upper end of said bracket 6. The spool is maintained in position on the pin 8 by means of a star-shaped spring washer. 9 which is prevented from coming ofi the end of the pin S by means of .a cotter pin '10. This washer, however, is not intendedto provide any great amount of braking eiiect, which is taken care of by the brake-lever 11 which carries a leather pad 12 long enough to bear against each flange of the spool. The brakefixed in the oblique arm 14 of the bracket 6, and the lower end of this lever is operated upon by one end of the spring-actuated pivoted arm 15. The latter is pivoted upon a pin 16 also fixed in the bracket 6 and is urged in a direction so as to twist the arm to apply the brake by means of a coil spring 17 one end of which is secured to the pin 16 and the other end engagesthe horizontal portion of the arm. This arm is formed from. suitable sheet metal and the end remote from the bracket is bent down and shaped so as to form acircular track for the wire and V-shaped in cross-section. The wire is prevented fromjumping out of the track by means of several wire eyes 17 secured in the center of the arm. The radius of the circular portion of the arm is such as to deliver the wiresubstantiallyin a straight tangential line to the wire-straightening mechanismdesignated as a whole 18. it will be noted that the amount of tension or frictional drag imparted to the wire by the spool take-oil mechanism just described, is determined by the tension of the spring'17, and is independent of any friction due to the rotation of thespool on its spindle. When the wire is pulled into the machine by the feeding mechanism, the end 19 of the lever 15 swings down, due to the pull of the wire, and releases the brake 12 slightly permitting the spool to rotate.

The feeding forward of the wire is accomplished by the cam-operated feed lever 42. This lever 42 is mounted upon a horizontal pivot pin 43 iixed in the front of the main frame casting 2 and is normally forced in a clock-wise direction by means of a comparatively stiff coil spring 44 which is wound around said pivot. The backward movement of the lever is limited by the adj ustable stop-pin 45 which engages a circular notch in the back edge of the lower arm of the lever. The upper end of the lever is pivoted with a pin 46 upon which is rotatably mounted a cam-roller 47, the latter being adapted to be engaged by the cam surface 48 upon the cam member 49 which is securely keyed to the operating shaft 5. It will be self evident from an inspection of Fig. 1 that as the cam member 49 rotates,

the cam surface 48 will engage the roller 47 and cause the lever 42 to make a partial rot tion in an antl-clock-wise direction, 1ts angular motion ceasing after the roller passes beyond the point 50 and it will not begin to recede until it is disengaged by the cam surface following behind the point 51. it will be noticed that this cam surface is so shaped that it does not determine the rear position of the lever 42, this being taken care of by the stop-pin 45 Thus the amount of swing of the lever 42 can be adjusted by changing the position of the stop-pin 45,

since the limit of forward motion is always the same, being fixed by the relation of the cam surface 48 to the cam-roller 47 and the pivot 43. Upon the lower end of the lever 42 is mounted an arc-shaped track member which is grooved throughout the greater portion of its length to prevent the wire from becoming accidentally displaced. The front end of this arc-shaped track is cut away down to the bottom of the groove and for a short distance back from the frontend of the track to form a seat for the gripping roller 53. lhe latter consists of a circular section of tool steel having serrations or teeth out into its periphery which is rotatably mounted upon a pin 5-4 fixed into the end of the swinging arm 55, which is itself pivoted upon a pin 56 fixed in the arm 42. The arm is of a suilicient thickness to be bored out to accommodate a coil spring 57 which surrounds the reduced stem portion of a plunger 58, the latter being thus forced out by the spring against thesmall angle plate 59 which is secured to the edge of the feed lever 42 by the screw 60. It will be noticed that the pivot 56 is located some distance to the right of an imaginary line connecting the pin 54 with the pivot 43, and the spring 57 thus tends to force the gripping roller 53 into engagement with the cut away portion of the arc-shaped track forming the gripping seat. It is thus clear that when the feed lever moves forward in an anti-clock-wise direction, the roller 53 will grip the wire tightly and push it forward into the cutting and forming mechanism. When the lever moves backward, however, in a clock-wise direction there is no tendency for the lever to grip the wire, because the spring 57 is relatively weak and allows the arm 55 to swing slightly on its pivot and thus release the wire as the lever moves backward. It is understood that the arcshaped track 52' forms'part of acircle having for its center the pivot 43, the distance from said center being such that the direction of thewire as it leaves the wirestraightening mechanism is a tangent to the bottom of the groove in the track. Thus there is no tendency to bend the wire as it is being fed forward by the feed-lever which is also so placed as to deliver the wirein a substantially straight line to the cutting mechanism.

Referring to Figs. 4 and 9, it will be seen that the stop-pin 45 is secured in an arm of the member 61 which is a flat sector-shaped piece of steel pivoted at the rear of the main frame casting 2 and co-axially upon the back end of the fixed pivot 43. Substantially vertically below the pivot 43 I have secured in the member 61 a stud 62 which projects rearwardly so as to be engaged by a vertical slot 63 in the upper. portion of. the small plate 64 secured to the top of the sliding plate 65. The latter is slidably positioned PIS and held into engagement with the back of the main frame casting 2 .by means of a flatheaded stud 66 which projects through a slot 67. a The cutting-off mechanism -as a whole is mounted upon a rectangular block 68 which is provided with a rectangular portion 69 extending through a horizontal slot 70 formed in the main frame casting 2 and is secured to the plate 65 by a long screw 71 which passes freely through the block 68 and is threaded into the plate 65. The respective surfaces of the block 68 and the front and rear of the main frame casting 2 are finished so as to form suitable sliding surfaces. To the rear of the plate 65 is se cured a rectangular plate 72 which is drilled out at its end to form a bearing for the end of the adjusting screw 73, the latter being provided with a groove 74 which is engaged by a pin 75 secured in the block 72. The adjusting screw 73 is threaded so as to 006perate with the longitudinal threaded bore of the rotatable adjusting member 76, the latter having a reduced neck portion rotatably seated within a mounting 77 and having a pair of integral collars 78 which prevent longitudinal movement of the adjusting member 76 when the latter is turned. The member 76 is furnished with a suitable knurled head 7 9 of a sufficient diameter to enable it to be easily adjusted.

On referring to Fig. 4 it will readily be understood that on turning the head 79, the

plate 65 will move correspondingly in ahorizontaldirection and will carry with it away from the center of the forming machine both the cutting mechanism carried by the block 68, and also, by virtue of the slot63, it will move the stud 62 an equal amount. The stud 62 is secured in the member 61 at a distance from the center of the pivot 43 precisely equal to one-half of the distance between said pivot 43 and the bottom of the groove in the arc-shaped track 52 on the end of the feed lever. It is thus apparent that a horizontal movement of the 'cutting mechanism away from the center of the machine results in a backward movement of the arc-shaped track. The amount 'of such backward movement measured on the circumference of the track is equal to twice the amount of horizontal movement of the cutting mechanism. Such horizontal adjustment of the cutting mechanism will thus result in an increase or decrease in the length of the wire fed by each oscillation of the lever, the change in length being equal to twice the amount of movement of the cutting mechanism horizontally away from or toward the center of the machine. The amount of adjustment required is usually not very large, and the position of the stud 62 consequently does not seriously depart from its average position vertically below the pivot 43 and thus the ratio of two to one between the increase of the length of the wire fed and the movement of the cutting mechanism toward or away from the center of the form'- ing mechanism is not seriously disturbed throughout the range of adjustment of the wire fed. It should of course be understood seen that the block 68, which carries the cutting-off and crimping mechanism, is formed with a removable portion 80 which is located in position by a dowel pin 81, this removable portion 80 carrying the cutting-01f plunger while the clamping plunger is mounted in the main body of the block 68. The wire is guided into the cutting-01f die by a tubular bell-mouthed cylindrical plug 82 the end of which is threaded and screwed into the block 68. The clamping plunger 83 whose function it is to prevent the wire from being improperly pulled back when the feedlever is making its backward movement, is located in a vertical bore just behind the guide-block 82. The wire is gripped between the serrated lower end 84 ofthe clamping plunger and the top of the opposed anvil member 85 which is fixed in a hole bored out beneath the clamping plunger 83. The I around which and in the bore 87 is located a coil compression spring 88. The upper end of the latter presses'against the sleeve 89 which slides upon theupper end of the stem 86 and is prevented from flying off by means of a transverse pin 90 which is securely fixed in the end of the stem 86, and its ends are long enough to ride freely in the diametrically opposed slots 91 in the sleeve. The upper end of the sleeve is furnished with a comparatively large integral head 92 and the sleeve itself is forced vertically upward by a. coil compression spring 93 seated in'the enlarged bore 94 extending down into the block 68 a short distance. The clamping plunger is operated and forced into engagement with the wire by the horizontal arm 95 which projects from the side of the cutting-off plunger 96. The serrations of the lower end of the clamping plunger 83 are cut in such a direction as to cross the wire at right-angles to its length, and in order to maintain the. plunger in the proper position to keep these serrations fac-.

ed irito the removable portion and the circular disk cutter 99 which is mountedcutting off of the wire is imparted to they cutting-o5 plunger 96 by a reciprocating slide member 100 which has a flat horizontal angular pro ection 101 which is engaged by a horizontal notch 102 111 the back of the cutting-off plunger. The member 100 1S normally forced upward by a coil spring 100 located in a cylindrical bore drilled verticaliycfroin its under side, the spring cooperating with a small pin 101 which engages a small angle piece 102 secured to the side of the fixed member 103 by screws 104:. The vertical shank of the reciprocatory slide 100 is rectangular in cross-section and slides in a vertical rectangular guideway formed in the back of the piece 103 which is fixed to the main casting 2. The upper end of the shank of the plunger 100 carries securely fixed therein a pivot-pin 101 upon which is rotatably mounted a cam roller 105, the latter being engaged by the cam surface 106 formed on the circumference of the main cam member 49. The actual cutting off of the wire takes place when th raised portion 107 of the said cam surface strikes the roller as the cam member rotates (see Fig. 1), and it will be noticed from an inspection of Fig. 8 that in normal position the cutter 99 is positioned a considerably greater distance above the wire than is the serrated end of the plunger 88, this resulting in the wire being securely clamped by the plunger 88 before the cutting-off knife 99 severs the wire blank. The raised portion 107 of the cam surface 106 forms substantially one-half of its circumference and is so positioned on the exterior of the cam that the wire is securely clamped by the plunger 83 while the feed-lever is making its'backward movement so as to prevent the wire from being pulled back by the latter as it recedes, whereas, when the feed-lever is feeding forward the wire into the cutting-off mechanism, the plunger 83 is raised out of contact with the wire, which thus moves for ward freely. r

The forming anvihshown best in Fig. 10, is located directly in the center line of the machine below the center of the shaft 5, and

comprises a cylindrical plunger 108 which slides horizontally in a cylindrical, aperture in the front of the casting 2 and co-axial with the bore of the stationary sleeve 7109 which is secured in the back of the casting 2by a set screw'110. The rear end of the plunger 108 is provided with a vertical longitudinal slot 111 which forms a guide around the vertical pin 112 screwed into the lower side of the sleeve 109. The rear end of the sleeve 109 s partially closed and forms shoulder for the coil compression spring 113' which operates against the end of the plunger 108 and forces 1t outwardly into the proper forming position, its move ment being limited by the end of the slot 111 striking the pin 112. v The outer front end of the plunger 108 is formed with a head 11 i which is so shaped as to provide a pair of parallel vertical side surfaces around which the wire is formed and an upper bevclcd surface 115 and a lower rounded surface 116. A slot 11%- is sawn horizontally in the point of the head 11a and the upper edge of this slot at the side adjacent to the cutting mechanism is beveled, as shown at 118, in order to guide the wire into the slot as it is fed forward. The forming plunger 119 is arranged to slide vertically in a rectangular groove formed in the block 120 whichis secured to the front of the main frame casting 2 and is reciprocated verti cally up and down by a cam roller 121 which is rotatably mounted upon a pin 122 fixed in the upper end of plunger 119, and is engaged by a cam' track 123 formed in the front of the cam member 419. The front face of the forming plunger 119 is also slotted out to form a vertical slide-way for the driving' plunger 121 which is furnished at its sides with tongues engaging grooves in said. slide-way. The lower end of the forming p unger 119 is cut away even with the rear face ofthe driving plunger 12 1, and the lower end of the forming plunger thus forms a fork, the arms of which are the proper distance apart to admit the head 11a of the forming anvil as the forming plunger is depressed. The under sides or the forks of the forming plunger are grooved slightly in line with the wire so as to engage the latter and hold it in proper alinement as it is being formed, and the opposed inner faces of the forks are grooved out, as indicated at 125 in F 3, so as to form retaining grooves for the legs of the staple after the forming plunger has operated to form the wire into ll-shape. The swinging anvil 1216 is made out of a piece of fiat steel substantially the same horizontal width as the head lll of the anvil plunger, and is mounted upon a horizontal pivot 127 secured in the lower end of the slide 128 which reciproll-JU The latter is also forced inwardly with considerable pressure toward the head 114 bv means of the flat clock spring 134 which is secured in a slot in the bolt 135 adjustably,

secured in the sheet metal guard 136, the latter being mounted upon-the block 129 by screws 137. In order to keep the wire in its proper position at the inner end of the slot 117 so that it will be properly engagedb-y the grooves on the under side of the lower ends of the forming forks, I have provided The rear edge of this guide-finger 138 is formed V-shaped at its lower ends'oithat the end of the wire in striking it will'be deflected and forced into its proper position in the rear of the slot 117 and the front end of the head 114 is notched out in V- I shape, as shown in Fig. 11, so as to accommodate the V-shaped lower end of the guidefinger 138. The guide-finger 138 is forced back into its operative position by a light clock spring 140, the lower end of which presses against the wide main spring 134. It will be noticed that the driving plunger 124 is reciprocated vertically by means of a pitman 141 connecting the upper end of the plunger with the crank pin 142 secured in the main cam member 49.

Describing the operation of the forming and driving mechanism, it will be noticed that the end of the wire is fed forward the required amount into the slot 117 and is there accurately positioned by the guide member 138 in readiness to be formed. The forming plunger in its downward movement then engages'the wire on each side of the head 114 and directly afterward the cutting plunger severs the blank. The forming plunger then continues its downward movement and forms the ends of the blankinto the legs of the staple which embrace the sides of the head 114 and the swinging anvil member 126 and are positively guided by their position in the opposed side grooves in the forks of the forming plunger which continues its downward movement until it engages or substantially engages the upper surface of the book which is being stapled. The forming plunger then remains in this position until the staple has been punched.

through the paper. The driving is accomplished by the driving plunger 124, the

movement of he driving plunger continues, the plunger108-is finally pushed in so as to eXpose the top of the staple at the end of the slot, andthe staple is then engaged by the groove 143 at the point of'the driving 7o plunger 124. The staple then of course commences tomove downwardly and enters the paper, the swinging anvil member 126 being-gradually pushed aside as the bevel end of the driving plunger strikes its upper i5 cam surface until finally it is pushed completely aside by the descending driving plunger which pass'es'beyond the point ofthe swinging anvil member. The legs of the staple are clamped beneath the book so by means ofwell known mechanism located below the saddle 3, which need not be described. 7 t. v

- vI claim- '1. Ina wire stitching,machine,the'com- I bination of a frame having an operating shaft, a cam keyed tofsaid shaft, a springretracted wire feed'lever pivoted to said frame and carrying-a roller adapted-to be engaged by said cam and having an arc- 9e shaped feed-wire track with gripping means cooperating with said track, a swinging arm 7 having'its pivot substantially co-axial with said lever-pivot and provided with a proection substantially halfway between said arc-shaped feed-track and said pivot-and with a back-stop adapted to engage said lever, forming mechanism, cutting mechanism at one side of said forming mechanism,

and a slide carrying said cutting mechanism and adjustable to vary the distance between said cutting mechanism and said forming mechanism and having a slot the sides of which tangentially engage said projection.

2. In a wire-stitching machine, wire- W5 cutting and clamping mechanism comprising a body portion, a die fixed in said body portion, a knife adapted to slide in said body portion and cooperate with said die, a

clamping plunger provided with transverse teeth crossing the axis of the wire, said I plunger being adapted to slide in said body portion, parallel with said knife, resilient means for raising said plunger out of contact with the wire, means for depressing said plunger and adapted to prevent rotation thereof and a spring interposed between said plunger depressing means and said plunger.

'3. In a wire-stitching machine, wirecutting and clamping mechanism comprising a body portion, adie secured in said body portion, a knife cooperating with said die and adapted to slide in said body por- 7 tion, a clamping'plunger parallel with said knife and provided at its upper end with V a transverse notch, and a pin carried by the end of saidknife andarranged to engage said notch and depress the plunger.

4. In wire-stitching mechanism, the combination of a spring-pressed horizontally slidable forming-die having a horizontal slot at its outer end for receiving and forming the wire,-the outerend of said plunger having a vertically extending notch deep enough to expose the wire when located against the rear wall of the slot, anda vertically swinging springqoressed guide member adapted toenter said'notch and guide the wire into the bottom of said slot, said guide-member being beveled on the side adjacent the Wire-feed. i

6. In a wire-stitching machine, Wirecutting and clamping mechanism, comprising a body portion, a die fixed in said body portion, a knife member adapted to slide in said body portion and cooperate with said die, a clamping plunger slidable in said body portion, parallel with said knife member, a member actuated by said knife memher for depressing said plunger, a spring interposed between said body portion and said depressing member for raising the latter,-a spring interposed between said depressing member and said plunger, and a connection between said depressing memher and said plunger, permitting a limited sliding movement of the two last named parts relative to each other.

. In a wirestitching machine, Wirecutting and clamping mechanism, comprising a body portion, a die fixed in said body portion, a knife member adapted to slide in said body portion and cooperate with said die, a clamping plunger slidable in said 7 body portion, parallel with said knife memher, a member actuated by said knife-memher for depressing said plunger, a spring interposed between said body portion and said depressing member for raising the latter, a spring interposed between said depressing member and said plunger, a stem on said plunger slidable in said depressing member, and means for limitingthe sliding movement of sald stem 1n sald depressing member.

' JOSEPH PAGLIARUL. Witnesses: o

C. A. SoANs,

EMILIE Ross.

Gopies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, 13.0.