US1126202A - Safety-pin machine. - Google Patents

Safety-pin machine. Download PDF

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Publication number
US1126202A
US1126202A US77018013A US1913770180A US1126202A US 1126202 A US1126202 A US 1126202A US 77018013 A US77018013 A US 77018013A US 1913770180 A US1913770180 A US 1913770180A US 1126202 A US1126202 A US 1126202A
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Prior art keywords
pin
blank
cam
slide
shield
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US77018013A
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Gustav E Harcke
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AMERICAN PIN Co
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AMERICAN PIN Co
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21G—MAKING NEEDLES, PINS OR NAILS OF METAL
    • B21G3/00—Making pins, nails, or the like
    • B21G3/02—Making pins, nails, or the like of pins of the kind used in the tailoring trade or the house- hold
    • B21G3/04—Making pins, nails, or the like of pins of the kind used in the tailoring trade or the house- hold with locking or shielding device for the pin point, e.g. safety-pins

Definitions

  • the primary object of this invention is to provide an improved construction, combination and arrangement of mechanisms for performing the various operations involved in the manufacture of safety pins, said mechanisms being adapted to cooperate in the most effective manner.
  • Some of the objects of the presentinvem' tion are to provide improved mechanismsfor forming the blank, for' feeding said blank, for arranging and positioning said blank, for applying a shield thereto, for twisting the blank, and for expelling the completed pin from the machine.
  • - Figure 1 is aplan' view of the complete machine, the hopper for holding the shields being removed for the sake of clearn'ess.
  • FIG. 2 is a front elevation of the machine including the hopper which holds the shields, parts being in the same position as shown in Fig.
  • Fig. 3 is a side elevation of the machine
  • Fig. 4 is a plan view of the mechanism for holding, cutting and forming the neck on the blank and shows these mechanisms in the initial position, or after the blank has been cut and the neck formed, the
  • Fig. 5 is a vertical section on the line VV, Fig. 4, and shows the mechanism for holding and cutting the blank
  • Fig.6 is a section on the line VI-VI, Fig. 1,and shows the means for operating the push fingers for removing the blank from the neck forming position to the conveyer
  • Fig. 7 is a side elevation of a detail horizontal sectional view showing how the anvil is lowered to allow theblank to be moved by the push fingers to the conveyer
  • Fig. 9 is a detail vertical section on the line IXIX, Fig. 8; Fig.
  • FIG. 10 is a plan view in detail showing the blank after it has been taken from the conveyer and moved into position to receive the shield to be twisted and formed into a completed closed pin. This view shows the several parts in the initial positionof operation;
  • Fig. 11 is a plan view similar to Fig.' 10 and shows the several mechanisms after they have been operated to place the shield, twist the blank, and to form a completed pin;
  • Fig. 12 is a detail view in elevation, showing the spring finger for removing the pin from the holding jaws after said pin has been formed and released.
  • Fig. 13 is a detail perspective view of the blank presentin guide; Fig. 14
  • ⁇ is a vertical section on the line XIVXIV,
  • Fig. 1 is a vertical section on the line XV-XV, Fig. 1, with some of the parts removed;
  • Fig. 16 is a similar view to Fig. 15 taken on the other side of the shield chute and shows the means'for releasing and holdingthe shields;
  • Fig. 17 is a fragmentary plan view of the shield'chute showing the means for holding and releasing the shields.
  • FigtlS- is a vertical'section on the line XVIII-XVIII, Fig. 17, looking in the direction -'of the arrow;
  • Fig. 19 is a fragmentary elevation of the anvil showing the means for removing the shield when the blank is not-in position to receive the same;
  • Fig. 20 is a side elevation in detail of the twisting mechanism
  • Fig. 21 is a vertical 4 detail section on the line XXI-XXI, Fig. 20, showing the relative positions of the centering pi-n andtwisting head
  • Fig. 22 is a vertical section on the line XXII-XXII, Fig. 20, showing the means for lifting the centering pin and twisting head
  • Fig. 23 is a section on the line XXIII-XXIII, Fig. 20, showing how the fixed rack on the table operates the pinion rotating the segment, said segment in turn rotating the twister head
  • Fig. 24 is a vertical section onthe line XXIV-XXIV, Fig. 1, looking in the direction of the arrow
  • Figs. 25, 26, 27. 28 and 29 show the blank from the time it is cut off until it is formed into a safety pin;
  • Fig. 30 is a detail view showing how the twister head grips the blank to hold the fragmentary vertical section showing the parts outlined in" Fig. 24, but taken from the other side of the abutment plate 68.v and. looking in the opposite direction.
  • the wire from which safety pins 'afe to"be?"con'-' structed is mounted on a reel (not ShQWl1), the end of said? wirebeing' "fed' to suitable holding means while a portion thereof is; sevei'ed' f'therefrorn and the end thereof formed with a neck 'or' 'cro'ok for the recep-' tion ofthe proteeti g hiem, in' the man'- ner -to beher'einafter' specifically pointed out.
  • a reciprocat g forming-die block 6 is forced against projecting-end of the pin blank, as shown in Fig. 4, saiddie block 6 havingits end suitably "formed to cooperatewiththe -in-' clined face of the anvil 3, as shown in Fig.
  • the die block6 is secured-, bii aseiew 7- to the reduced portion 8 off a slide 9, a post lO'being mounted on the forward'end of said slide to project through a slot 11 the cover plate 12.
  • The'post is arranged at a suitable distance fromanother post 13 which isrigidlv mounted on the cover plate 12, said posts 10 and 13 being connected by" a spring 14 which tends to retain the slide'9 in its rearmost position, as shown in Fig.1
  • Suitable 'uprights' 15 are mounted on the rear end of the slide 9 for journaling the ew e it s be g wisted-W F g-I 1 i .Q Pi H 1?. less -E s. m
  • the combined gripping jaw and anvil block 3 project from the upper end of a vertical slide 21, said slide being provided on one face with a rack 22 meshingjrvith a pinion 23011 a shaft 24:, said sh'aftbeing o'urnaled in a bed'pl'ate 25 of the gripping and forming device;
  • the shaft 24 has on its outer end a crank arm 26 to which is con nected one arm of a cam lever 27 pivoted at 28 to the bed 'plate 25.
  • the rear end of the cam lever 27 is provided with a roller 29 which runs on'a cam- 30' on the cam shaft 19, a spring 31 being adapted to retain 'the roller '29 in Contact with said c'am. VVh'en the outer run of the cam 30 engages the cam roller 29, said roller is depressed against the action of the spring 31 and the pinion 23 is caused to rotate in aclockwise direction.
  • Suitable mechanism for holding the wire during thecutting and forming operations may be provided, such as the well-known device Shawn in Fig- 5, which comprises a plunger ,32 with a normal tendency to be fbreedwnt of engagement with the wire, but whiclfis adapted to be depressed by a fingef'33- muuatedia one end 34 of a cam lever-ss pi bt d at 36 to the bracket 37 Gam'1ever"35 'is provided witha roller 38 which runsfon a cam 39.
  • the outer'run -of said cam being of'sujtable extent tb retain the plung r 32 in clamping engagement with'the wire during the cutting andZ fQrnf ingop'erations.
  • the cutter 5 is preferably mountedon" one end of a cam lever 40 which is pivo'tedat n m the bracket Theta ver' 40"' i's' provided with "a'cani roller 42- which'runs' onapt'fin 43, onthe" bani shaft" 19.and when said lever is suitably depressed will cause fthe cutter' 5 to sever the pin: bl anks.' v
  • suitabldmeans' for conveving the 'pi'n blanks from the position in which'they are formed to a "position suitable to have the shields applied. thereto. are provided by a plurality of'n'o'tched disks or plates 44, each blanks to the conveyor disks 4%, a table 46 is mounted on the base plate or table 417 by means of a web 18 which connects the table 416 to an attaching flange 49.
  • a pair of reciprocablc fingers 50 are adapted as'shown in Figs a and (3, to slide over the table 16 to move the blank l into the notches in the disks 44.
  • the present embodiment of my invention contemplates securing these lingers 50 to the forward end of a slide 51 which reciprocates in the base of a bracket 52.
  • the bracket 52 is provided with an overhanging portion for mounting the pivot 53 of a bent cam lever 51, said cam lever having a de pending extension 55, to which one end of a spring 56 is connected, the other end of said spring being connected to a'fixed point 57.
  • a link 58 connects the slide 51 with the cam lever 51 in the manner shown in Fig. 6.
  • the normal tendency ofathe spring 56 is to hold the slide 51. in extreme forward position.
  • Mounted on the shaft 19 is a cam 59 which cooperates with a cam roller 60 carried by the cam lever 54, to withdraw the fingers 50 to initial position.
  • the rotation of the cam 59 is in the direction of the arrow shown in Fig. 6, the timing of its movement being adapted to feed the pin blanks forward one by one after they have been out and the neck formed thereon.
  • the gripping block 4 as shown in Fig. 4 is operated in a-manner similar to that of the forming-die block 6, being mounted on the forward end of a slide 61 which carries at its rear end a cam roller 62.
  • the cam roller 62 runs on acam 63, said cam operating to move the gripper block forward to gripping position while the spring 64 which connects a pin 65 on the housing with a pin 66 on the slide tends to withdraw said gripper block to initial position.
  • I preferably place a spring retaining rod 67 above the table 46 to prevent upwarddisplacement of the pin blanks as they are fed forward to the conveyer disks 4.4.
  • a guide 68 may also be provided for alining the pin blanks, so that as they are fed forwardly, the sharpening mechanism, illustrated in Fig. 1 by one set of reciprocating files 69. 'will give the proper pointing effect on each of the blanks as they are passed on to shield applying position.
  • Anabutment plate 68- is provided against which the crooked ends or necks of the pin blocks are forced by the end thrust the to the pointing mechanism.
  • the conveyer mechanism is of a type well known in the art but as heretofore employed, has not been used to convey pin blanks which have had their ends bent or crooked before being delivered thereto.
  • the pin blanks are held in the convever by the pressure arch and retaining band 70 but become arranged with their crooked ends projecting in various directions, due to the rotation of said pin blanks. It will be understood that as the conveyer disks all rotate the pin blanks disposed in the notches therein are deposited successively into the channel between the upper and lower guide blocks 74 and 77.
  • 1 preferably provide a slotted guide 71 which has its upper wall removed adjacent one end (see Fig. 13) to accommodate a pair of guide blocks 74 and 77 which are secured to the inner face of the abutment plate 68' (see Figs. 24 and 3l),and which are spaced apart to provide a channel 76'.
  • This construction permits the sliding guide 71 to be reciprocated so that as the fingers 106 (hereinafter referred to) move a blank forward said slide accompanies the blank and retains its crooked end in position. As shown in Fig.
  • the slot for holding the crooked ends of the blanks 1 is narrowed toward its forward end 73 to more closely confine the crooked end of the pin blank while it is being clamped by the gripping mechanism, to be hereinafter described.
  • Cooperating with the guide 71 is a device which arranges the crooked ends to point in the same direction, said device comprising the parts now to be described.
  • a spring 80 which has one end mounted in a socket in the forward end of the arch 70, bears with its other end against the pad or block 79, thus causing said pad or block to bear down on the pin blanks which are brought thereunder by the forward travel of the conveyer disks 44. It will be seen therefore that said pad or block will be adapted to rotate the pin blanks until their crooked ends are thrown into engagement with the upper guide block 77, in the manner to be presently pointed out, after which said blanks are caused to slide over the under surface of the pad or block 79 with their crooked ends presented forwardly.
  • Fig. 81 which represents the'slide 71 in its real-most position, it will be apparent that the corner between surfaces 77' and 77 does not interfere with the forward movements of the blanks 1. for the reason that when the crooked ends of the blanks 1 drop from between the blocks 71 and 77, they lie flat in the groove which extends longitudinally of the reciprocatory guide 71.
  • Figs. 10 and 11 the abutment wall 68' together with the blocks 71 and 7 7, have been om tted for the sake of clearness. WVhen a pin blank reaches a position corresponding to that of the uppermost blank 1 shown in Fig.
  • the lower guide block 74 is provided with a recess 75 which extends forward a sufficient distance to permit its crooked end to be brought against the surface 77 after which its rotary movement is blocked, the blank 1 merely sliding along the under surface of the block or pad 79 without being rotated thereby.
  • the uppermost blank 1 in Fig. 31 have reached the corner between surfaces 77' and 77 before its crooked end had been raised above said corner, its frictional engagement with the lower surface of the block or pad 79 would have served to retain the crooked end of said blank against'the surface 79 while the conveyer moved the blank for ward.
  • the free end'of the dependent member 79 is arranged to be in advance of the rounded portion 78 of member 77 so that rotation of the blank. is assured before. the member 74 and 77 act thereon.
  • the slotted guide bar 71 is provided with an aperture 81 forthe reception of a pin 82 (see Fig. 11).
  • J ournaled on the pin 82 is a block 83 which. slides in a slot 84 in one end of a bell crank lever 85 which is pivoted on a pin 86.
  • the other arm of this bell crank lever carries a cam roller 87 which cooperates with a cam surface 88 on the shield applying slide, to be presently referred to.
  • a stationary jaw 89 is rrfade adjustable in position by means of an adjusting screw 90 and is held in adjusted position by means of a set screw 91.
  • a movable jaw 92 is adjustably mounted on a slide 93, as shown in Fig. 12, the adjusting movement being imparted by an adjusting screw'94, and the jaw retained in adjusted position by the set screw
  • the slide 93 is provided with a bifurcated bearing 96, within which is journaled a cam roller 97, which a cam 98 on a cam shaft 99.
  • the slide 93 carries a post 100 which is connected by a spring 101 with a post 102 on is in position to have the the housing of said guide' This spring serves to retain the roller 97 in contact with the cam 98.
  • the fixed and movable jaws are provided with wedge-shaped protuberances 103, which project above the plane of the table 104 upon which the blank rests.
  • This construction is adapted to have the pin blank moved over the protuberance on the fixed jaw into position to be gripped between the gripping jaws where it is held flat on the table and in suitable position to have the subsequent operations completed in the manner to be presently pointed out.
  • Suitable means for removing the pin blanks one by one from the notches in the convever disks and shoving them across the table 104 is provided by having a plurality of pusher fingers, each of which as shown in Fig. 14. comprise ashank portion 105 and a forwardlv presented portion, 106. As shown in Fig. 15, the shank portion 105 of each of said push'ers is rigidly secured to a sleeve 107 which is journaled upon a crank pin 108 which is rigid with, but eccentric to a crank shaft 109, which is journaled in spaced bearings 110 (see Fig. 3);
  • a crank arm 111 is rigidly secured to the sleeve 107 and has its outer end pivotally connected at 112 with a connecting rod 113.
  • Said connecting rod comprises relatively movable portions connected by an adjusting screw 114, the purpose of this adjustment being to adjust the positions of the push fingers 106 so as to make it possible to accurately time the movements of said fingers.
  • the forward end of the connecting rod 113 is pivotally connected at 115 with the lower end ofa cam lever 116 which is pivoted on a stud 117 carried in a bracket 118 which is mounted on the frame, as shown in Fig. 14.
  • the upper end of the lever 116 carries a cam roller 119 which runs on a cam 120 whichis mounted on the cam shaft 99. From hn inspection of Fig. 14, it will be seen that as the cam lever 116 is oscillated from the position shown in full lines to that shown in dotted lines. the push fingers comprising shanks 105 and fingers 106 will be oscillated from full line to dotted line positions. During these movements the cam roller is retained in running contact with the cam 120 by means of a spring 121, one end of said spring being raised position. pm 141 raises to release the lowermost 7 ing end of the shaft 109 is the hub 124 of a The outer end of said crank arm carries a wrist pin 125 which is journaled in the lower end rocable cam rod 126.
  • the upper end of the cam rod 126 carries a cam roller 127 whichruns on a cam 128 keyed to a shaft 129.
  • a collar 130 is keyed to the shaft 109 adjacent the bearing 110, said collar being provided with a radial pm 131 to which one end of aspring 132 is secured as shown in Fig. 14.
  • the other end of said spring is secured to a fixed projection 133 carried by the main frame.
  • the spring 132 serves to retain the roller 127 in running contact with the cam 128.
  • the function of this mechanism is to oscillate the shaft 109 on its axis to vary the position of theaxis of the crank pin 108.
  • the hopper 134 for shields is provided with any suitable mechanism for transferring shields therefrom to a chute 135 which delivers the shields to a feeding runway 136 in suitable order to be fed one by one to the shield-applying mechanism, to be presently described.
  • a pair of spring actuated feed dogs are provided, each of said feed dogs comprising a lever 137 pivoted intermediately of its ends at 138 in a bracket 139.
  • One end of said lever- 137 is provided with a head 140 within which is mounted a pin 141 which is adapted to block the discharge of a shield through the feeding runway.
  • the other end of the lever 137 is deflected downwardly to form a cam arm 142, which is adapted to be engaged by a cam block 143 mounted on a slide 144.
  • the slide 144 is reciprocated by any suitable mechanism to alternately raise and lower the pins 141.
  • the lowermost pin 141 is down while the uppermost is up and vice versa.
  • the column of shields in the feeding runway 136 is supported by the lowermost pin 141 while the other pin is in
  • the lower shield descends to retain the of a vertical recipsucceeding shields within the runway. Then as the upper one lifts the lower one descends to hold the column.
  • a cam 145 (see Fig. 15) which is keyed to the shaft 129, said cam being provided with a rise or protuberance 146, which serves to operate a bent cam lever 147, which is pivoted on a stud 148 and provided with a cam roller 149 which runs on the cam 145.
  • a link 150 serves to connect the upper arm of the cam lever 147 with the upper end of the slide 144.
  • a pair of retaining plates 151 serve to retain the shields within the feeding runway.
  • a tongue 152 Secured to one of said retaining plates is a tongue 152 which is provided with an enlargement 153 at its lower end, said tongue being adapted to coiiperate with the shield holding die which reciprocates into and out of position to apply a shield to the neck or crooked end of a pin blank, which is held for that purpose between the gripping jaws 89 and 92.
  • a. slide 154 is reciprocally mounted in suitable guide 155, said slide being provided with a shield receiving pocket or die 156 (see Fig. 15), which in the outer position of the slide 154- as shown in full lines in Fig. 15, is disposed directly beneath the lower end of the feeding runway 136.
  • the enlargement 153 on the tongue 152 serves to direct a shield into the die socket 156.
  • the inward movement of the slide 154 causes the cam surface'88 to displace the cam roller 87 inwardly and thereby automatically retracts the pin presenting guide bar 71 from the pin blank which remains in proper position within the gripping jaws 89 and 92.
  • the shield is forced into position over the neck and suitably supported by the die socket for the punching operation which follows, the punching mechanism being described hereinafter.
  • Suitable and efficient means for imparting the reciprocating movements to the slide 154 are provided in the present embodiment by the cam 157 which is keyed to the shaft 129 and serves to coiiperate with a. cam roller 158 which is journaled on a stud 159 on an oscillating cam bar 160, which is swingingly suspended from the stud. 148.
  • the brackEE'161 which supports the feeding runway 136 and the feed dog mechanism therefor serves to mount the stud 148.
  • the lower end of the cam bar 160 is pivoted at 162 with one end of a connecting link 163, the other end of said l nk being pivotally connected at 164 to the slide 154.
  • the spring 165 is connected at one end to the slide 154 and at its other end to an extension 166 on the box guide 167 inthe manner shown in Within which the cam bar 126 reciprocates.
  • the box guide 167 is secured to the frame Fig. 15.
  • the enlargement 153 on the end of the tongue 152 shoves the shield backwardly into the socket d1 e 156, so that when said shield has been positioned on the neck of the pin blank, the punch 168 mounted in the chuck 169 at the lower end of a ram l which reciprocates in the slotted head 171 of the standard'172 mounted upon the main frame of the machirie. Adjusting screws just the pressure between the punch 168 and the shield within the die socket 156.
  • the ram 170 IS pivotally supported in one end of a walklng beam 174 which is pivoted on a bolt 175 carried in the standard 172.
  • a cam roller 176 is suitably mounted in a bracket 177 pivoted at 178 to the walking beam 174, an adjusting screw 179 being provided to adjust the relations between the cam roller 176 and the cam 180 on which it runs.
  • the cam 180 is keyed to the shaft 99 and is properly timed to lower the punch 168 immediately after the shield has been aplied to the neck and before the twisting head begins its work. If for one reason or another, the pin blank presenting mechanism fails to deliver a pin blank to the gripping jaws 89 and 92 in time to receive a shield which is being applied by the slide 154, some means must be provided for re-- moving said shield before the succeeding one is deposited thereupon, which would cause probable injury to parts of the machine.
  • a device such as that shown in Figs. 10, 11, 15 and 19, which comprises a block 181 in which is inset a strap 182 which carries at its outer end a depending finger 183.
  • the depending finger 183 travels in a slot 184' as the slide 154 reciprocates. Said slot opens inwardly into the die socket 156, so that in the event of a shield remaining in the die socket 156 during the rearward movement of the slide 154, said shield will be positively engaged by the depending finger 183 and displaced.
  • a reciprocable slide 186 which carries a ram 187 for carrying the twisting headv which is now to be described.
  • a, sleeve or mandrel 189' provided in its lower end with a chuck or blank gripping member 190 having'a smaller bore than the mandrel 189.
  • Rotatably and reciprocably mounted within the sleeve or mandrel 189 is a shaft or rod 191 from which depends the centering pin 192 which-is adapted to move into and out of a hole 193 in.the plate or table 47.
  • pin 195 serves to rigidly con- 173 serve to ad-- 1 preferably emnect a collar 196 to the upper end of the rod 191.
  • Rigid with the mandrel 189 is a pinion 197.
  • a grooved collar 198 is also rigid with the mandrel 189.
  • Within a vertical bearing 199 on the ram 187, is journaled a shaft 200 (see Fig. 23).
  • a hub 2010f On the upper end of said shaft 200, is rigidly secured a hub 2010f a segmentalgear 202.
  • 202 is a spring for aiding the movement of the segmental gear.
  • a gear pinion 203 which meshes with a rack 204 formed on the top flange of a rail 205 which is rigidly mounted on the plate or table 194 by means of a flange 206.
  • rack 204 formed on the top flange of a rail 205 which is rigidly mounted on the plate or table 194 by means of a flange 206.
  • the gear plnlon 203 will be rotated by rack 204.
  • the segmental gear 202 by partaking of the rotary movement of the pinion 203, will rotate the ear pinion 197 on the mandrel 189.
  • Within a bearing box 207 is a sleeve or mandrel 208.
  • the mandrel 208 is provided below with a socket 209, into which projects the rounded end 210 of a cam lever 211, which is pivoted on astud 212 which projects from the box bearing 199.
  • a roller 213 On the end of the cam shaft 211 is mounted a roller 213 which runs on a cam 214 on the shaft 99. As the roller 213 rises and falls under the action of the cam 213, the mandrel 208 will be caused to fall and rise.
  • Mounted on the upper end of the mandrel 208 is the hub 215 of a radial arm 216, the outer end 217 of said arm being slidably mounted in the groove of the collar 198.
  • the mandrel 189 will therefore partake of the up and down movements of the mandrel 208.
  • a rod 218 which carries at its upper end, a radial arm 219 with its outer end slidably mounted in the groove of the collar 196.
  • the lower end of rod 218 is provided with a socket 220 into which projects the inner end of a cam lever 221 (see Figs. 10 and 20).
  • Said cam lever 221 carries a cam roller 222 which runs on a cam 223 keyed to the shaft 99.
  • the chuck 190 on the lower end of the mandrel 189 embodies a peculiar construction as shown in Figs. 28 and 30.
  • FIG. 30 is a bottom plan view of the chuck 190 which is rotatable about the centering pin 192 for the purpose of winding the pin blank 1 around the centering pin 192 as the ram 187 travels inwardly and carries with it the centering pin 192.
  • the lug 224 which protrudes from the bottom face of the twisting mandrel 190, is provided with a fiat face 225 which is parallel to the line of tangency between the centering pin 192 and the gripping point 226 of the lug 227.
  • the peculiar feature about this arrangement is that when the twisting mandrel is in the position shown in Figs.
  • the pin blank enters between the gripping lug and the centering pin 192 quite easily, but as soon as the rotary movement of the twisting mandrel has deflected the pointed branch of the pin blank to one side, said branch is positively gripped with great force between the lugs 224 and 226, making it impossible for the parts to slip during the twisting operation.
  • the plate or table 104 is provided with a slot 228 along which the centering pin 192 travels as the ram 187 retracts.
  • the pointed branch of the pin being revolved far enough to be deposited within the shield at the end of the second revolution.
  • the guard 229 is secured to the lateral face of the slide housing 100 and extends out over the table 104 in suitable position to depress the point of the pin at each revolution.
  • a resilient member 230 which is secured at 231, has its outer end deflected to pass through an aperture 282 (see Fig. 14) in the outer end of the guard 229, so that the point of the pin will freely pass under said guardf
  • Another resilient guard 233 (see Fig. 11) is secured to the slide housing 100 and as shown in Fig. 12, is provided wide a curved blade 234 which overhangs the clamping jaws and normally exerts a resilient pressure on the blank as well as on the completed safety pin (see Figs. 10 and 11). After the pin has been completed and the gripper jaws 89 and 92 released, the resilient pressure exerted by the blade 234 upon that end of the safety pinwhich overhangs'the edge of table 104, serves to expel the completed safety pin.
  • a connecting rod com prising rod ends 235 and 236 and adjusting screw 237 is provided. Power is transmitted through this connecting rod by means of a cam roller 238 which runs in a cam groove 239 in the cam 240 which is keyed to the shaft 99.
  • the shaft 99 is connected by beveled gears 241 with the main drive shaft 129, the drive shaft 129 having a pulley 242 keyed thereto to adapt it to be driven by any suitable belt.
  • Beveled gears 243 serve to connect the other end of the drive shaft 129 with the cam shaft 19.
  • the drive shaft 129 has keyed thereto a driving worm 244 which meshes with a gear 245 which is keyed to a shaft 246.
  • a spur gear 247 which meshes with another spur gear 248 which is keyed to a shaft 249 which is journaled in suitable hanging brackets indicated in dotted lines in Fig. 2.
  • a spur pinion 250 is keyed to the shaft 249. he spur pinion 250 meshes with the teeth on the notched disks 44 to serve to convey the pin blanks from the neck forming position to the shield applying positiori.
  • Said conveyer disks transport the blanks in a known manner and at the same time cause them to rotate asv they pass successively into grinding relationwith the sharpening means.
  • the anvil block 3 Prior to the delivery of a blank to the conveyers, the anvil block 3 has been depressed by means of the cam action illustrated in Figs. 7 and 9, which leaves the blank free to be presented to the conveyers.
  • the conveyers deliver the pin blank onto the plate or table 104 in a predetermined position when they are seized by the gripping jaws 89 and 92.
  • a shield is released from the feeding runway and delivered thereby into the die socket 156.
  • the several parts are then in the position shown in Fig. 10. Under the action of the cam mechanism shown in Fig.
  • the pointed leg becomes rigidly gripped between the point 226 of the lug 227 and the fiat surface 225 of the lug 224:.
  • the ram 187 is forced inwardly at a velocity) equal to the circumferential velocity of the point of contact between the pin 192 and the blank 1.
  • the lugs 227 and 221 will therefore absolutely prevent any slipping of the wire around the pin 192, an action which absolutely insures an unvaryi-ng length of the pointed leg of the pin.
  • the chuck 190 is rotated on the pin 192 by means of the gear connections shown in Fig. 21.
  • the guard 229 will serve to depress said pointed leg and keep it in proper position on the table.
  • said points will be caught in the shield after which the slide 154 will be with drawn.
  • the cam 223 will permit the pin 192 to rise before the chuck 190 is permitted to be raised by the cam 214, thereby releasing the completed pin from the twister mechanism, the jaws 89 and 92 still retaining their hold upon one leg of the pin.
  • the jaws 89 and 92 will open allow ing the guard 231 to depress the pin and eject it from the operating mechanism.
  • a safety pingnachine the combination of means for severing a. blank from a "strand, means for holding said blank in po- Isition in which it is severed, and means operatively related to sa1d holding means for forming a neck on the blank without moving it from blank severing position.
  • a safety pin machine the combination of means for holding a strand as it is ,fed from a reel, means operatively related to said holding means for severing a blank from said strand, and means cooperating with said holding means for forming a neck on said blank, said holding means constituting an operative portion of said neck-forming means.
  • a-safety pin machine the combination of means for holding a strand as it is fed from a reel, means operatively related to said holding means for severing a blank from said strand, and means operatively related to said holdingmeans for forming a neck on said blank, a portion of said holding means in holding position being disposed in the path of lateral displacement of said blank and adapted to be moved out of said path of lateral displacement.
  • the combination With means for conveying a blank from blank-forming position to shield-applying position, of means for forming a blank, said blank-forming means being provided with a movable portion normally projecting above the plane of movement of said blank in passing from said forming means, and means for periodically depressing said portion below the plane of movemenhof said blank to permit said blank to pass to said conveying means.
  • blank-holding means including a neck-forming die block movably mounted to assume a blank-forming position in the path of movement of a blank and afterward to assume a position out of the path of such movement.
  • a safety pin machine the combination with means for pointing pin blanks and -a conveyer for moving blanks into and out of operative relationship to said pointing means, blank-forming means, a table interposed between the blank-forming means and said conveyer, and pusher fingers movable across said table.
  • a safety pin machine the combination with means for pointing pin blanks and a conveyer for moving blanks into and out of operative relationship to said pointing means, a table over which the blanks are passed to said conveyor, and pusher fingers movable across said table, said conveyer being constructed and arranged to receive the pin blank broadside on.
  • a safety pin machine means for imparting the convolutions to a safety pin blank, said means comprising a rotary twisting head provided with a centering pin, a lug having a flat face spaced from a tangent to said centering pin a distance substantially equal to the diameter of the safety pin.
  • a safety pin machine means for imparting the convolutions to a safety pin blank, said means comprising a rotary twisting head provided with a centering pin, a lug having a fiat face spaced from a tangent to said centering pin a distance substantially equal to the diameter of the safety pin blank, and a second lug having a gripping portion approximately on said tangent, said gripping'portion of the second lug being constituted by a pointed edge of the second lug.
  • a safety pin machine means for imparting the convolutions to asafety pin blank, said means comprising a rotary twisting head provided with a centering pin, a lug having a fiat face spaced from a tangent to saidcentering pin a distance substantially equal to the diameter of the safety pin blank, and a second lug having a gripping portion approximately on said tangent, said gripping lugs being rigid on the twisting

Description

G. E. HARGKE.
SAFETY PIN MACHINE.
APPLICATION FILED MAY 27, 1913.
1,126,202. Patented Jan. 26, 1915. 12 SHEETS-SHEET 1.
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APPLICATION FILED MAY 27, 1913.
1,126,202, Patented Jan. 26, 1915.
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5 ma Mioz 9-, E. HARGKE. SAFETY PIN MACHINE. APPLICATION TILED MAY 27, 1913.
1,126,202, Patented. Jan. 26, 1915.
12 SHEETS-SHEET 3.
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G. B. HARCKE.
SAFETY PIN MACHINE.
APPLICATION FILED MAY 27, 1913.
1, 1 26,202., Patented Jan. 26, 1915.
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SAFETY PIN MACHINE.
APPLICATION FILED MAY 27, 1913. 1,126,202.
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12 SHEETS-SHEET 5- G. E. HARGKE.
SAFETY PIN: MACHINE.
APPLICATION FILED MAY 27, 1913.
1 1 ,202 Patented J an. 26, 1915.
12 SHEETS-SHEET 6.
G. E. HARGKB. SAFETY PIN MACHINE. APPLIOAI'ION FILED MAY 27, 1913.
Patented Jan. 26, 1915.
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SAFETY PIN MACHINE.
Patented Jan. 26, 1915.
APPLICATION FILED MAY 27, 1913.
12 SHEETS-SHEET 1 0.
G. E. HAROKE.
SAFETY PIN MACHINE. APPLIOATION FILED MAY 27, 1913.
1, 126,202; Patented Jan. 26, 1915.
12 SHEETS-SHEET l1.
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SAFETY PIN MACHINE.
APPLIGATION FILED MAY 27, 1913.
Patented Jan. 26, 1915.
12 SHEETS-SHEET 12. 1 7,97 2 78 1 79 A I 6 30 2 2 7o 7 O "VI ll "In I I 3:, 73 3%} '7 A90 0 I UMTE o STATES PATENT oTTron.
GUSTAV E. HARCKE, OF WATERBURY, CONNECTICUT, ASSIG-NOR T AMERICAN PIN COMPANY, OF WATERIBUBY, CONNECTICUT, A CORPORATION OF CONNECTICUT.
SAFETY-PIN MKCHINE.
Specification of Letters Patent.
Patented Jan. 26, 1915.
Application filed May 27, 1913. Serial No. 770,180.
To all whom it may concern Be it lmown that l, GUSTAV E. HARCKE, a citizen of the United States, and a resident of Waterbury, county of New Haven and State of Connecticut, have invented certain new and useful Improvements in Safety-Pin Machines, of which the following is a full and clear specification.
The primary object of this invention is to provide an improved construction, combination and arrangement of mechanisms for performing the various operations involved in the manufacture of safety pins, said mechanisms being adapted to cooperate in the most effective manner.
Some of the objects of the presentinvem' tion are to provide improved mechanismsfor forming the blank, for' feeding said blank, for arranging and positioning said blank, for applying a shield thereto, for twisting the blank, and for expelling the completed pin from the machine.
Other objects will appear in the following description and be pointed out in the appended claims, reference being had to the accompanying drawings in which the preferred embodiment of my invention is shown.
In the -drawings,-Figure 1 is aplan' view of the complete machine, the hopper for holding the shields being removed for the sake of clearn'ess.
This view shows the twisting mechanism,'shield feeding. mechanism and the mechanism for applying the shield to the blank in initial position. Fig; 2 is a front elevation of the machine including the hopper which holds the shields, parts being in the same position as shown in Fig.
1; Fig. 3 is a side elevation of the machine,
parts being in-the same position as shown in Fig. 1'; Fig. 4 is a plan view of the mechanism for holding, cutting and forming the neck on the blank and shows these mechanisms in the initial position, or after the blank has been cut and the neck formed, the
push fingers being aboutto thrust the'blank forward in position to be sharpened; Fig. 5 is a vertical section on the line VV, Fig. 4, and shows the mechanism for holding and cutting the blank; Fig.6is a section on the line VI-VI, Fig. 1,and shows the means for operating the push fingers for removing the blank from the neck forming position to the conveyer; Fig. 7 is a side elevation of a detail horizontal sectional view showing how the anvil is lowered to allow theblank to be moved by the push fingers to the conveyer; Fig. 9 is a detail vertical section on the line IXIX, Fig. 8; Fig. 10 is a plan view in detail showing the blank after it has been taken from the conveyer and moved into position to receive the shield to be twisted and formed into a completed closed pin. This view shows the several parts in the initial positionof operation; Fig. 11 is a plan view similar to Fig.' 10 and shows the several mechanisms after they have been operated to place the shield, twist the blank, and to form a completed pin; Fig. 12 is a detail view in elevation, showing the spring finger for removing the pin from the holding jaws after said pin has been formed and released. Fig. 13 is a detail perspective view of the blank presentin guide; Fig. 14
\ is a vertical section on the line XIVXIV,
Fig. 1, with some of the parts removed; Fig. 15 is a vertical section on the line XV-XV, Fig. 1, with some of the parts removed; Fig. 16 is a similar view to Fig. 15 taken on the other side of the shield chute and shows the means'for releasing and holdingthe shields; Fig. 17 is a fragmentary plan view of the shield'chute showing the means for holding and releasing the shields. FigtlS-is a vertical'section on the line XVIII-XVIII, Fig. 17, looking in the direction -'of the arrow; Fig. 19 is a fragmentary elevation of the anvil showing the means for removing the shield when the blank is not-in position to receive the same; Fig. 20 is a side elevation in detail of the twisting mechanism; Fig. 21 is a vertical 4 detail section on the line XXI-XXI, Fig. 20, showing the relative positions of the centering pi-n andtwisting head; Fig. 22 is a vertical section on the line XXII-XXII, Fig. 20, showing the means for lifting the centering pin and twisting head: Fig. 23 is a section on the line XXIII-XXIII, Fig. 20, showing how the fixed rack on the table operates the pinion rotating the segment, said segment in turn rotating the twister head; Fig. 24 is a vertical section onthe line XXIV-XXIV, Fig. 1, looking in the direction of the arrow; Figs. 25, 26, 27. 28 and 29 show the blank from the time it is cut off until it is formed into a safety pin;
Fig. 30" is a detail view showing how the twister head grips the blank to hold the fragmentary vertical section showing the parts outlined in" Fig. 24, but taken from the other side of the abutment plate 68.v and. looking in the opposite direction.
According to the preferred embodiment of my invention shown on the drawings the wire from which safety pins 'afe to"be?"con'-' structed, is mounted on a reel (not ShQWl1), the end of said? wirebeing' "fed' to suitable holding means while a portion thereof is; sevei'ed' f'therefrorn and the end thereof formed with a neck 'or' 'cro'ok for the recep-' tion ofthe proteeti g hiem, in' the man'- ner -to beher'einafter' specifically pointed out. -The"s'afety 'in b lank thus formed, is fed' to suitable convey'er' whe eby it is transported to a' devicdwhic'h arranges and positions the? blank in suitable position. to have a 'shield'applied 'tjrthe 'c"ro6k'ed e1 1d by a I shield-applying n'1'ech'ani'sni'. Subsequently to this operation; suitable twisting mechanism becomes; o erative "and after forming 'the' conventions which 'i'esil'ient'ly" connect the legs-'of the pin,-"-depos its1 the" pointed end within the shieldafter'which the mechanism for 'dischaigingth pin from the machine becomes active?" 'A' general pl'an'view of these "mechanisms arranged in groups toad'apt, them" to "perform the foregoing operations, isfs'hownin 'Figl 1." 'Thus as shown 'in Figs. 1 and 4, 'the wire las it leavesthe 'reel referred to passes 'thrgugh a straightening device 2, 'sa d-Tstjraighteningdevice being of suitable construction for; this purpose. As show'nin igs'iflfiii'd l, a combined gripper jaw; arid'jaayn block '3', is" arranged adjacent the lath-"6f" feed bf the wire entering the mac 1fne, s1iiifable"'feeding;
mechanism (not shown) being provided to advance the wire until 'itjprojects slig'h'tlyj' beyond the fiat face ofthe -jaw 3 which" is in line with the direction of 'fed. Coiiprating with the jaw 3 to claIiip-tlie'iviie'is a second gripping jaw 4 which-holds said-wire? while a blank severing uevicasah-as the,
cutter 5, seiers the blank from "the strand;
While theblank is thus held, a reciprocat g forming-die block 6 is forced against projecting-end of the pin blank, as shown in Fig. 4, saiddie block 6 havingits end suitably "formed to cooperatewiththe -in-' clined face of the anvil 3, as shown in Fig.
7. The die block6 is secured-, bii aseiew 7- to the reduced portion 8 off a slide 9, a post lO'being mounted on the forward'end of said slide to project through a slot 11 the cover plate 12. jThe'post is arranged at a suitable distance fromanother post 13 which isrigidlv mounted on the cover plate 12, said posts 10 and 13 being connected by" a spring 14 which tends to retain the slide'9 in its rearmost position, as shown in Fig.1
Suitable 'uprights' 15 are mounted on the rear end of the slide 9 for journaling the ew e it s be g wisted-W F g-I 1 i .Q Pi H 1?. less -E s. m
whichfcooperates with acam 18 on the cam shaft 19, said cam 18 having a protuberance portion-20 which forces the slide 9 forward ateac'h revolution of the cam shaft 19. 7 As slidwn in Fig. 9, the combined gripping jaw and anvil block 3 project from the upper end of a vertical slide 21, said slide being provided on one face with a rack 22 meshingjrvith a pinion 23011 a shaft 24:, said sh'aftbeing o'urnaled in a bed'pl'ate 25 of the gripping and forming device;
As shown in Fig. 7 the shaft 24 has on its outer end a crank arm 26 to which is con nected one arm of a cam lever 27 pivoted at 28 to the bed 'plate 25. The rear end of the cam lever 27 is provided with a roller 29 which runs on'a cam- 30' on the cam shaft 19, a spring 31 being adapted to retain 'the roller '29 in Contact with said c'am. VVh'en the outer run of the cam 30 engages the cam roller 29, said roller is depressed against the action of the spring 31 and the pinion 23 is caused to rotate in aclockwise direction. As ar'esult,the slide 21 is lowered to depress the anvil 3 out of the'path of the pin blank 1 which is now free to be fed forward to'the conveyer,'to"be presently referred to? *Bv'an inspection of Fig. 7 it will be 'seen that this operation takes place after the ret'urn"moveme1'1t of" the slide 9 has been completed.
Suitable mechanism for holding the wire during thecutting and forming operations, maybe provided, such as the well-known device Shawn in Fig- 5, which comprises a plunger ,32 with a normal tendency to be fbreedwnt of engagement with the wire, but whiclfis adapted to be depressed by a fingef'33- muuatedia one end 34 of a cam lever-ss pi bt d at 36 to the bracket 37 Gam'1ever"35 'is provided witha roller 38 which runsfon a cam 39. "the outer'run -of said cam being of'sujtable extent tb retain the plung r 32 in clamping engagement with'the wire during the cutting andZ fQrnf ingop'erations. The cutter 5 is preferably mountedon" one end of a cam lever 40 which is pivo'tedat n m the bracket Theta ver' 40"' i's' provided with "a'cani roller 42- which'runs' onapt'fin 43, onthe" bani shaft" 19.and when said lever is suitably depressed will cause fthe cutter' 5 to sever the pin: bl anks.' v
In the present embodiment of mv, invenQ tion. suitabldmeans' for conveving the 'pi'n blanks from the position in which'they are formed to a "position suitable to have the shields applied. thereto. are provided by a plurality of'n'o'tched disks or plates 44, each blanks to the conveyor disks 4%, a table 46 is mounted on the base plate or table 417 by means of a web 18 which connects the table 416 to an attaching flange 49. A pair of reciprocablc fingers 50 are adapted as'shown in Figs a and (3, to slide over the table 16 to move the blank l into the notches in the disks 44. The present embodiment of my invention contemplates securing these lingers 50 to the forward end of a slide 51 which reciprocates in the base of a bracket 52. The bracket 52 is provided with an overhanging portion for mounting the pivot 53 of a bent cam lever 51, said cam lever having a de pending extension 55, to which one end ofa spring 56 is connected, the other end of said spring being connected to a'fixed point 57. A link 58 connects the slide 51 with the cam lever 51 in the manner shown in Fig. 6. The normal tendency ofathe spring 56 is to hold the slide 51. in extreme forward position. Mounted on the shaft 19 is a cam 59 which cooperates with a cam roller 60 carried by the cam lever 54, to withdraw the fingers 50 to initial position. The rotation of the cam 59 is in the direction of the arrow shown in Fig. 6, the timing of its movement being adapted to feed the pin blanks forward one by one after they have been out and the neck formed thereon.
The gripping block 4 as shown in Fig. 4, is operated in a-manner similar to that of the forming-die block 6, being mounted on the forward end of a slide 61 which carries at its rear end a cam roller 62. The cam roller 62 runs on acam 63, said cam operating to move the gripper block forward to gripping position while the spring 64 which connects a pin 65 on the housing with a pin 66 on the slide tends to withdraw said gripper block to initial position. I preferably place a spring retaining rod 67 above the table 46 to prevent upwarddisplacement of the pin blanks as they are fed forward to the conveyer disks 4.4. A guide 68 may also be provided for alining the pin blanks, so that as they are fed forwardly, the sharpening mechanism, illustrated in Fig. 1 by one set of reciprocating files 69. 'will give the proper pointing effect on each of the blanks as they are passed on to shield applying position. Anabutment plate 68- is provided against which the crooked ends or necks of the pin blocks are forced by the end thrust the to the pointing mechanism.
The conveyer mechanism is of a type well known in the art but as heretofore employed, has not been used to convey pin blanks which have had their ends bent or crooked before being delivered thereto. During their progress along the pressure arch 7 O the pin blanks are held in the convever by the pressure arch and retaining band 70 but become arranged with their crooked ends projecting in various directions, due to the rotation of said pin blanks. It will be understood that as the conveyer disks all rotate the pin blanks disposed in the notches therein are deposited successively into the channel between the upper and lower guide blocks 74 and 77. In order to provide suitable and eflicient means for holding them in the same relative posi tions after they have been arranged by the device to be presently described, 1 preferably provide a slotted guide 71 which has its upper wall removed adjacent one end (see Fig. 13) to accommodate a pair of guide blocks 74 and 77 which are secured to the inner face of the abutment plate 68' (see Figs. 24 and 3l),and which are spaced apart to provide a channel 76'. This construction permits the sliding guide 71 to be reciprocated so that as the fingers 106 (hereinafter referred to) move a blank forward said slide accompanies the blank and retains its crooked end in position. As shown in Fig. 13, the slot for holding the crooked ends of the blanks 1 is narrowed toward its forward end 73 to more closely confine the crooked end of the pin blank while it is being clamped by the gripping mechanism, to be hereinafter described. Cooperating with the guide 71 is a device which arranges the crooked ends to point in the same direction, said device comprising the parts now to be described. By an inspection of Fig. 24, it will be seen that a pad or block 79 is pivotally suspended from the arch 70 by means of a pin 79. A spring 80 which has one end mounted in a socket in the forward end of the arch 70, bears with its other end against the pad or block 79, thus causing said pad or block to bear down on the pin blanks which are brought thereunder by the forward travel of the conveyer disks 44. It will be seen therefore that said pad or block will be adapted to rotate the pin blanks until their crooked ends are thrown into engagement with the upper guide block 77, in the manner to be presently pointed out, after which said blanks are caused to slide over the under surface of the pad or block 79 with their crooked ends presented forwardly.
By referring to Fig. 81, which represents the'slide 71 in its real-most position, it will be apparent that the corner between surfaces 77' and 77 does not interfere with the forward movements of the blanks 1. for the reason that when the crooked ends of the blanks 1 drop from between the blocks 71 and 77, they lie flat in the groove which extends longitudinally of the reciprocatory guide 71. In Figs. 10 and 11 the abutment wall 68' together with the blocks 71 and 7 7, have been om tted for the sake of clearness. WVhen a pin blank reaches a position corresponding to that of the uppermost blank 1 shown in Fig. 31, it is being whirled on ts axis by the pad or block 79 (indicated 1n coiiperate's with dotted lines in Fig. 31, as it is nearer the observer than the planeof the drawing) Under this condition, the blank as it approached the inclined wall 77' has happened to rotate far enough to throw its crooked end above the corner between the surfaces 77 and 77 so that its continued forward and downward movement does not interfere with a continued rotary movement of the blank, to accommodate this continued rotation. The lower guide block 74 is provided with a recess 75 which extends forward a sufficient distance to permit its crooked end to be brought against the surface 77 after which its rotary movement is blocked, the blank 1 merely sliding along the under surface of the block or pad 79 without being rotated thereby. On the other band should the uppermost blank 1 in Fig. 31 have reached the corner between surfaces 77' and 77 before its crooked end had been raised above said corner, its frictional engagement with the lower surface of the block or pad 79 would have served to retain the crooked end of said blank against'the surface 79 while the conveyer moved the blank for ward. v
The free end'of the dependent member 79 is arranged to be in advance of the rounded portion 78 of member 77 so that rotation of the blank. is assured before. the member 74 and 77 act thereon. As shown in Fig. 13, the slotted guide bar 71 is provided with an aperture 81 forthe reception of a pin 82 (see Fig. 11). J ournaled on the pin 82 is a block 83 which. slides in a slot 84 in one end of a bell crank lever 85 which is pivoted on a pin 86. The other arm of this bell crank lever carries a cam roller 87 which cooperates with a cam surface 88 on the shield applying slide, to be presently referred to. The object of this construction is to adapt the slotted guide to control the movement of the crooked end of the pin blank until said pin blank shield applied thereto. In order to provide suitable and efiicient means for holding the blank in this position, a stationary jaw 89 is rrfade adjustable in position by means of an adjusting screw 90 and is held in adjusted position by means of a set screw 91. A movable jaw 92 is adjustably mounted on a slide 93, as shown in Fig. 12, the adjusting movement being imparted by an adjusting screw'94, and the jaw retained in adjusted position by the set screw The slide 93 is provided with a bifurcated bearing 96, within which is journaled a cam roller 97, which a cam 98 on a cam shaft 99. The slide 93 carries a post 100 which is connected by a spring 101 with a post 102 on is in position to have the the housing of said guide' This spring serves to retain the roller 97 in contact with the cam 98. I
By an inspection of Fig. 12, it will be seen that the fixed and movable jaws are provided with wedge-shaped protuberances 103, which project above the plane of the table 104 upon which the blank rests. This construction is adapted to have the pin blank moved over the protuberance on the fixed jaw into position to be gripped between the gripping jaws where it is held flat on the table and in suitable position to have the subsequent operations completed in the manner to be presently pointed out.
Suitable means for removing the pin blanks one by one from the notches in the convever disks and shoving them across the table 104, is provided by having a plurality of pusher fingers, each of which as shown in Fig. 14. comprise ashank portion 105 and a forwardlv presented portion, 106. As shown in Fig. 15, the shank portion 105 of each of said push'ers is rigidly secured to a sleeve 107 which is journaled upon a crank pin 108 which is rigid with, but eccentric to a crank shaft 109, which is journaled in spaced bearings 110 (see Fig. 3);
In order to provide suitable means for oscillating the sleeve 107 on the crank pin 108 for the purpose of causing the push fingers to swing backwardly and forwardly, a crank arm 111 is rigidly secured to the sleeve 107 and has its outer end pivotally connected at 112 with a connecting rod 113. Said connecting rod comprises relatively movable portions connected by an adjusting screw 114, the purpose of this adjustment being to adjust the positions of the push fingers 106 so as to make it possible to accurately time the movements of said fingers. The forward end of the connecting rod 113 is pivotally connected at 115 with the lower end ofa cam lever 116 which is pivoted on a stud 117 carried in a bracket 118 which is mounted on the frame, as shown in Fig. 14. The upper end of the lever 116 carries a cam roller 119 which runs on a cam 120 whichis mounted on the cam shaft 99. From hn inspection of Fig. 14, it will be seen that as the cam lever 116 is oscillated from the position shown in full lines to that shown in dotted lines. the push fingers comprising shanks 105 and fingers 106 will be oscillated from full line to dotted line positions. During these movements the cam roller is retained in running contact with the cam 120 by means of a spring 121, one end of said spring being raised position. pm 141 raises to release the lowermost 7 ing end of the shaft 109 is the hub 124 of a The outer end of said crank arm carries a wrist pin 125 which is journaled in the lower end rocable cam rod 126.
crank arm.
The upper end of the cam rod 126 carries a cam roller 127 whichruns on a cam 128 keyed to a shaft 129.
As shown in F ig. 15, a collar 130 is keyed to the shaft 109 adjacent the bearing 110, said collar being provided with a radial pm 131 to which one end of aspring 132 is secured as shown in Fig. 14. The other end of said spring is secured to a fixed projection 133 carried by the main frame. The spring 132 serves to retain the roller 127 in running contact with the cam 128. The function of this mechanism is to oscillate the shaft 109 on its axis to vary the position of theaxis of the crank pin 108. By an inspection of Figs. 14 and 15, it will be seen that during the period in which the cam 120 is imparting the forward movement to the fingers 106, the crank pin 108 will be in raised position as shown in Fig. 14. On the return movement of the fingers 106 however, the cam roller 127 will be traveling around the inner run of the cam 128 and the crank pin 108 will be dropped to lower position. In consequence the return movement of the fingers 106 will be depressed below that of the forward movement, such a return movement permitting said fingers to assume initial position without engaging the next following pin blank carried by the notched conveyers.
Referring now to Figs. 3, 15, 16 and 17, the hopper 134 for shields is provided with any suitable mechanism for transferring shields therefrom to a chute 135 which delivers the shields to a feeding runway 136 in suitable order to be fed one by one to the shield-applying mechanism, to be presently described. As shown best in Fig. 18, a pair of spring actuated feed dogs are provided, each of said feed dogs comprising a lever 137 pivoted intermediately of its ends at 138 in a bracket 139. One end of said lever- 137 is provided with a head 140 within which is mounted a pin 141 which is adapted to block the discharge of a shield through the feeding runway. The other end of the lever 137 is deflected downwardly to form a cam arm 142, which is adapted to be engaged by a cam block 143 mounted on a slide 144. The slide 144 is reciprocated by any suitable mechanism to alternately raise and lower the pins 141. Thus the lowermost pin 141 is down while the uppermost is up and vice versa. By this means the column of shields in the feeding runway 136 is supported by the lowermost pin 141 while the other pin is in When however, the lower shield, the other pin descends to retain the of a vertical recipsucceeding shields within the runway. Then as the upper one lifts the lower one descends to hold the column. Suitable and eflicient mechanisms for reciprocating the slide 144 in the present embodiment of 'my invention, is provided by a cam 145 (see Fig. 15) which is keyed to the shaft 129, said cam being provided with a rise or protuberance 146, which serves to operate a bent cam lever 147, which is pivoted on a stud 148 and provided with a cam roller 149 which runs on the cam 145. A link 150 serves to connect the upper arm of the cam lever 147 with the upper end of the slide 144. As shown in Fig. 17 a pair of retaining plates 151 serve to retain the shields within the feeding runway. Secured to one of said retaining plates is a tongue 152 which is provided with an enlargement 153 at its lower end, said tongue being adapted to coiiperate with the shield holding die which reciprocates into and out of position to apply a shield to the neck or crooked end of a pin blank, which is held for that purpose between the gripping jaws 89 and 92.
Referring now to Figs. 10, 11 and 15, a. slide 154 is reciprocally mounted in suitable guide 155, said slide being provided with a shield receiving pocket or die 156 (see Fig. 15), which in the outer position of the slide 154- as shown in full lines in Fig. 15, is disposed directly beneath the lower end of the feeding runway 136. When in this position, the enlargement 153 on the tongue 152 serves to direct a shield into the die socket 156. As shown best in Figs. 10 and 11, the inward movement of the slide 154 causes the cam surface'88 to displace the cam roller 87 inwardly and thereby automatically retracts the pin presenting guide bar 71 from the pin blank which remains in proper position within the gripping jaws 89 and 92. Thus as the slide 154 moves inwardly, the shield is forced into position over the neck and suitably supported by the die socket for the punching operation which follows, the punching mechanism being described hereinafter. Suitable and efficient means for imparting the reciprocating movements to the slide 154 are provided in the present embodiment by the cam 157 which is keyed to the shaft 129 and serves to coiiperate with a. cam roller 158 which is journaled on a stud 159 on an oscillating cam bar 160, which is swingingly suspended from the stud. 148. The brackEE'161 which supports the feeding runway 136 and the feed dog mechanism therefor serves to mount the stud 148. The lower end of the cam bar 160 is pivoted at 162 with one end of a connecting link 163, the other end of said l nk being pivotally connected at 164 to the slide 154. The spring 165 is connected at one end to the slide 154 and at its other end to an extension 166 on the box guide 167 inthe manner shown in Within which the cam bar 126 reciprocates. The box guide 167 is secured to the frame Fig. 15. As the slide 154 moves inwardly, the enlargement 153 on the end of the tongue 152 shoves the shield backwardly into the socket d1 e 156, so that when said shield has been positioned on the neck of the pin blank, the punch 168 mounted in the chuck 169 at the lower end of a ram l which reciprocates in the slotted head 171 of the standard'172 mounted upon the main frame of the machirie. Adjusting screws just the pressure between the punch 168 and the shield within the die socket 156. As shown best in Fig.-14, the ram 170 IS pivotally supported in one end of a walklng beam 174 which is pivoted on a bolt 175 carried in the standard 172. A cam roller 176 is suitably mounted in a bracket 177 pivoted at 178 to the walking beam 174, an adjusting screw 179 being provided to adjust the relations between the cam roller 176 and the cam 180 on which it runs. The cam 180 is keyed to the shaft 99 and is properly timed to lower the punch 168 immediately after the shield has been aplied to the neck and before the twisting head begins its work. If for one reason or another, the pin blank presenting mechanism fails to deliver a pin blank to the gripping jaws 89 and 92 in time to receive a shield which is being applied by the slide 154, some means must be provided for re-- moving said shield before the succeeding one is deposited thereupon, which would cause probable injury to parts of the machine. For this purpose ploy a device such as that shown in Figs. 10, 11, 15 and 19, which comprises a block 181 in which is inset a strap 182 which carries at its outer end a depending finger 183. As shown in Fig. 10, the depending finger 183 travels in a slot 184' as the slide 154 reciprocates. Said slot opens inwardly into the die socket 156, so that in the event of a shield remaining in the die socket 156 during the rearward movement of the slide 154, said shield will be positively engaged by the depending finger 183 and displaced.
Referring now to Fig. 20. within a suitable iide block 185 is mounted a reciprocable slide 186 which carries a ram 187 for carrying the twisting headv which is now to be described. J ournaled within a vertical bearing 188 on the forward end of the ram 187, is a, sleeve or mandrel 189' provided in its lower end with a chuck or blank gripping member 190 having'a smaller bore than the mandrel 189. Rotatably and reciprocably mounted within the sleeve or mandrel 189, is a shaft or rod 191 from which depends the centering pin 192 which-is adapted to move into and out of a hole 193 in.the plate or table 47. A. pin 195serves to rigidly con- 173 serve to ad-- 1 preferably emnect a collar 196 to the upper end of the rod 191. Rigid with the mandrel 189 is a pinion 197. A grooved collar 198 is also rigid with the mandrel 189. Within a vertical bearing 199 on the ram 187, is journaled a shaft 200 (see Fig. 23). On the upper end of said shaft 200, is rigidly secured a hub 2010f a segmentalgear 202. 202 is a spring for aiding the movement of the segmental gear. Keyed to the lower end of the shaft 200 is a gear pinion 203 which meshes with a rack 204 formed on the top flange of a rail 205 which is rigidly mounted on the plate or table 194 by means of a flange 206. It will be understood from this description that as the ram 187 is reciprocated inwardly and outwardly, the gear plnlon 203 will be rotated by rack 204. Furthermore, the segmental gear 202 by partaking of the rotary movement of the pinion 203, will rotate the ear pinion 197 on the mandrel 189. Within a bearing box 207 is a sleeve or mandrel 208. The mandrel 208 is provided below with a socket 209, into which projects the rounded end 210 of a cam lever 211, which is pivoted on astud 212 which projects from the box bearing 199. On the end of the cam shaft 211 is mounted a roller 213 which runs on a cam 214 on the shaft 99. As the roller 213 rises and falls under the action of the cam 213, the mandrel 208 will be caused to fall and rise. Mounted on the upper end of the mandrel 208 is the hub 215 of a radial arm 216, the outer end 217 of said arm being slidably mounted in the groove of the collar 198. The mandrel 189 will therefore partake of the up and down movements of the mandrel 208. Reciprocably mounted within the mandrel 208 is a rod 218 which carries at its upper end, a radial arm 219 with its outer end slidably mounted in the groove of the collar 196. The lower end of rod 218 is provided with a socket 220 into which projects the inner end of a cam lever 221 (see Figs. 10 and 20). Said cam lever 221 carries a cam roller 222 which runs on a cam 223 keyed to the shaft 99. The chuck 190 on the lower end of the mandrel 189 embodies a peculiar construction as shown in Figs. 28 and 30. Fig. 30 is a bottom plan view of the chuck 190 which is rotatable about the centering pin 192 for the purpose of winding the pin blank 1 around the centering pin 192 as the ram 187 travels inwardly and carries with it the centering pin 192. As shown in Fig. 30 the lug 224 which protrudes from the bottom face of the twisting mandrel 190, is provided with a fiat face 225 which is parallel to the line of tangency between the centering pin 192 and the gripping point 226 of the lug 227. The peculiar feature about this arrangement is that when the twisting mandrel is in the position shown in Figs. 28 and 30, the pin blank enters between the gripping lug and the centering pin 192 quite easily, but as soon as the rotary movement of the twisting mandrel has deflected the pointed branch of the pin blank to one side, said branch is positively gripped with great force between the lugs 224 and 226, making it impossible for the parts to slip during the twisting operation. As shown in Figs. 10 and 11, the plate or table 104 is provided with a slot 228 along which the centering pin 192 travels as the ram 187 retracts. Thus as the convolutions are formed in the pin blank 1, the pin is in the position shown in Fig. 10 atthe start and at the end of the operation is in the position shown in Fig. 11, the pointed branch of the pin being revolved far enough to be deposited within the shield at the end of the second revolution. For this purpose, the rounded corner of the die socket 156 as shown in Fig. 15, together with the wedgeshaped protuberance on the gripping jaw 192, aids materially in guiding the point of the pin over the shield in the die socket 156. Consequently when the point is permitted to move backwardly, it becomes caught in the shield and is then ready to be discharged from the machine when the gripping jaws 89 and 92 are released.
Referring now to Figs. 10'and 14, the guard 229 is secured to the lateral face of the slide housing 100 and extends out over the table 104 in suitable position to depress the point of the pin at each revolution. A resilient member 230 which is secured at 231, has its outer end deflected to pass through an aperture 282 (see Fig. 14) in the outer end of the guard 229, so that the point of the pin will freely pass under said guardf Another resilient guard 233 (see Fig. 11) is secured to the slide housing 100 and as shown in Fig. 12, is provided wide a curved blade 234 which overhangs the clamping jaws and normally exerts a resilient pressure on the blank as well as on the completed safety pin (see Figs. 10 and 11). After the pin has been completed and the gripper jaws 89 and 92 released, the resilient pressure exerted by the blade 234 upon that end of the safety pinwhich overhangs'the edge of table 104, serves to expel the completed safety pin.
In order to impart the reciprocatingmovements to the ram 187, a connecting rod com prising rod ends 235 and 236 and adjusting screw 237 is provided. Power is transmitted through this connecting rod by means of a cam roller 238 which runs in a cam groove 239 in the cam 240 which is keyed to the shaft 99. As shown in Fig. 1, the shaft 99 is connected by beveled gears 241 with the main drive shaft 129, the drive shaft 129 having a pulley 242 keyed thereto to adapt it to be driven by any suitable belt. Beveled gears 243 serve to connect the other end of the drive shaft 129 with the cam shaft 19.
Referring now to Figs. 1 and 2, the drive shaft 129 has keyed thereto a driving worm 244 which meshes with a gear 245 which is keyed to a shaft 246. Also keyed to the shaft 246 is a spur gear 247 which meshes with another spur gear 248 which is keyed to a shaft 249 which is journaled in suitable hanging brackets indicated in dotted lines in Fig. 2. Also keyed to the shaft 249 is a spur pinion 250. he spur pinion 250 meshes with the teeth on the notched disks 44 to serve to convey the pin blanks from the neck forming position to the shield applying positiori.
he operation is as follows: The wire as it leaves the roll is made perfectly straight by the straightening mechanism (only a por tion of which is shown on the drawings). The straightened wire is fed in the direction of the arrow shown in Fig. 4, until the end of the wire overlaps the anvil block 3. The wire is then clamped between anvil block 3 and gripping jaw 4, after which the cutter 5 is moved transversely to sever the pin blank. At the same time, the neck forming die 6 imparts a crook to the end of the blank as shown in Fig. 6. Immediately after jaws 3, 4 and 6 have completed their operations, fingers 50 engage the blank and move it laterally into the alined notches of the conveyer disks 4-4. Said conveyer disks transport the blanks in a known manner and at the same time cause them to rotate asv they pass successively into grinding relationwith the sharpening means. Prior to the delivery of a blank to the conveyers, the anvil block 3 has been depressed by means of the cam action illustrated in Figs. 7 and 9, which leaves the blank free to be presented to the conveyers.- The conveyers deliver the pin blank onto the plate or table 104 in a predetermined position when they are seized by the gripping jaws 89 and 92. Immediately thereafter, a shield is released from the feeding runway and delivered thereby into the die socket 156. The several parts are then in the position shown in Fig. 10. Under the action of the cam mechanism shown in Fig. 15 the slide 154 is moved in wardly at the same time displacing the lank presenting guide bar 71. This leaves the neck of the pin blank free to receive the shield as it is forced thereon by the slide 154. Immediately thereafter, the punch 1G8 descends and securely clamps the shield to the neck and upon the completion ,of this operation, the twisting head becomes active. The pin blank has now assumed the appearance shown in Fig. 28, whereupon the twist ing mandrel 190 descends and grips the pointed leg of the pin as shown in Figs. 28 and 30. As the mandrel 190 rotates in the direction of the arrow, Fig. 28 it will be seen that the pointed leg becomes rigidly gripped between the point 226 of the lug 227 and the fiat surface 225 of the lug 224:. As the pointed leg is twisted about the centering pin 192, the ram 187 is forced inwardly at a velocity) equal to the circumferential velocity of the point of contact between the pin 192 and the blank 1. The lugs 227 and 221 will therefore absolutely prevent any slipping of the wire around the pin 192, an action which absolutely insures an unvaryi-ng length of the pointed leg of the pin. As the ram 187 travels inwardly, the chuck 190 is rotated on the pin 192 by means of the gear connections shown in Fig. 21. At each revolution of the pointed leg of the pin blank the guard 229 will serve to depress said pointed leg and keep it in proper position on the table. Upon the completion of the second revolution of the pointed leg of the blank, said points will be caught in the shield after which the slide 154 will be with drawn. As shown in Fig. 24, the cam 223 will permit the pin 192 to rise before the chuck 190 is permitted to be raised by the cam 214, thereby releasing the completed pin from the twister mechanism, the jaws 89 and 92 still retaining their hold upon one leg of the pin. After the twister mechanism recedes, the jaws 89 and 92 will open allow ing the guard 231 to depress the pin and eject it from the operating mechanism.
What I claim is:
1. In a safety pingnachine, the combination of means for severing a. blank from a "strand, means for holding said blank in po- Isition in which it is severed, and means operatively related to sa1d holding means for forming a neck on the blank without moving it from blank severing position.
2. In a safety pin machine, the combination of means for holding a strand as it is ,fed from a reel, means operatively related to said holding means for severing a blank from said strand, and means cooperating with said holding means for forming a neck on said blank, said holding means constituting an operative portion of said neck-forming means.
3. In a-safety pin machine, the combination of means for holding a strand as it is fed from a reel, means operatively related to said holding means for severing a blank from said strand, and means operatively related to said holdingmeans for forming a neck on said blank, a portion of said holding means in holding position being disposed in the path of lateral displacement of said blank and adapted to be moved out of said path of lateral displacement.
4:. In a safety pin machine, the combination with means for conveying a blank frpm blank-forming position to shield-applying position, of means for forming, a blank, said blank-forming means including a neck formingdie.
5. In -a safety pin machine, the combination With means for conveying a blank from blank-forming position to shield-applying position, of means for forming a blank, said blank-forming means being provided with a movable portion normally projecting above the plane of movement of said blank in passing from said forming means, and means for periodically depressing said portion below the plane of movemenhof said blank to permit said blank to pass to said conveying means.
6. In a safety pin machine, blank-holding means including a neck-forming die block movably mounted to assume a blank-forming position in the path of movement of a blank and afterward to assume a position out of the path of such movement.
7. In a safety pin machine, the combination with means for pointing pin blanks and -a conveyer for moving blanks into and out of operative relationship to said pointing means, blank-forming means, a table interposed between the blank-forming means and said conveyer, and pusher fingers movable across said table.
8. In a safety pin machine, the combination with means for pointing pin blanks and a conveyer for moving blanks into and out of operative relationship to said pointing means, a table over which the blanks are passed to said conveyor, and pusher fingers movable across said table, said conveyer being constructed and arranged to receive the pin blank broadside on.
9. In a safety pin machine, means for imparting the convolutions to a safety pin blank, said means comprising a rotary twisting head provided with a centering pin, a lug having a flat face spaced from a tangent to said centering pin a distance substantially equal to the diameter of the safety pin.
blank, and a second lug having a gripping portion approximately on said tangent.
10. In a safety pin machine, means for imparting the convolutions to a safety pin blank, said means comprising a rotary twisting head provided with a centering pin, a lug having a fiat face spaced from a tangent to said centering pin a distance substantially equal to the diameter of the safety pin blank, and a second lug having a gripping portion approximately on said tangent, said gripping'portion of the second lug being constituted by a pointed edge of the second lug. A
11. In a safety pin machine, means for imparting the convolutions to asafety pin blank, said means comprising a rotary twisting head provided with a centering pin, a lug having a fiat face spaced from a tangent to saidcentering pin a distance substantially equal to the diameter of the safety pin blank, and a second lug having a gripping portion approximately on said tangent, said gripping lugs being rigid on the twisting
US77018013A 1913-05-27 1913-05-27 Safety-pin machine. Expired - Lifetime US1126202A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2612796A (en) * 1950-02-17 1952-10-07 Bastian Bros Co Automatic button-pinning machine
US2677398A (en) * 1951-03-10 1954-05-04 Stubnitz Greene Spring Corp Machine for crimping wire for spring wire stringers and for forming loop springs on the ends of the wires

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2612796A (en) * 1950-02-17 1952-10-07 Bastian Bros Co Automatic button-pinning machine
US2677398A (en) * 1951-03-10 1954-05-04 Stubnitz Greene Spring Corp Machine for crimping wire for spring wire stringers and for forming loop springs on the ends of the wires

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