US1609905A - Horseshoe-punching machine - Google Patents

Description

Dec. 7 1926. 1,609,905

J. BROCK HORSESHOE PUNCHING MACHNE Filed Dec. 15. 1921 5 Sheets-Sheet l Dec.l 7, 1926.l

J. BROCK HORSESHOE PUNCHING MACHINE Filedv Dec, 15,

1921 5 Sheets-Sheet 2 Nb NN N wmv mw MK \Q, uw Y w mW QN Del' 7 1929. 1,609,905

I .1. BROCK v HORSESHOE PUNCHINGv MACHINE Filed Deo. 15 1921 5 Sheets-Sheet 3 J. BROCK l HoRssHoE PUNCHING MACHINE Filed Dec. 15. 1921 5 Sheets-Sheet 4 Z n l lvl-v l 't L 145 l x 452 Dec. l7 1926.

1,609,905 J. BROCK HORSESHOE 'PUNCHING MACHINE Fued Dec, 15, 1921 5 sheets-sheet 5 ivi/0.19, I

Patented Dec. 7, 1.926.

JOSEPH BROCK, OF ERIE, PENNSYLVANIA.

Application led December y15, 1921. Serial No. 522,498.

The machine of this invention is designed .to punch horse-shoe blanks7 preferably do- TheV ing all the punching at one operation. machine also is designed to out the blanks from a bar, to position the parts outV so as to properly punch them, to straighten the bar, and to upset it to lengths. The invention also relates to the ydetails of construetion and these and other features of the in-V vention will appear fromand claims. Y

The invention isillustrated in the accompanying drawings as follows Fig. 1 shows a section-on the line 1-1 m- 2, parts being removedto better show construction.

the specification 2 shows a front elevation of the ma` n lever 31 1s nxed on the. outer end of the chine.

3 a sectionV on the line 3 3l in Fig. 1.V

Fig. 3a a face view of ay cam for operating a feeding and clamping j aw.

Fig. l a section on theline i-4 in Fig. 2. F 5 an end elevation. Fig. 6 acentral section of a centering device.

Fig. 7 an alternativeconstruction showing the centering device. Fig. 8 frontelevation, partly in section, showing an alternative` construction of feeding device.

F ig. 9 a section on the line 9-.9 1n Fig. 8.

Fig. 10 a plan view of an alternative centering device.

1 marks the fra-me7 and 2 and` 3. bearings for the main shaft 4. A gear 5 is fixed on the shaft fl and a gear 6 meshes with the gear The gear 6 is fixed on a shaft 7 andthe shaft 7 is carried in journals.v 8 in an exten-V sion of the frame. The shaft 7vis driven from a drive wheel 9, the device being provided with a ily wheel 9 o carry themachinery through the punchii common in machines of this type; 10 isla feed table on which a bla-'nk is fed into tl e machine. '.histable. has the side guides n 11 throughV which the blank passes; Rods' 2 extend from the'braclret 12a to a post'13.

10d form t* 4r is slidingly mounted on the rods12. This lrasan arm 15 to which a linkA 16 isaty2l mounted in a wobbling driver 22. arm 23V extends from the ring21 through a.

q action as isiV e ne guidemechanism for the 1ecinrocating feedingrdevices'; A cross which is pivotally secured to a collar 18 arranged between the shoulders 19 on an armv 20. The arm 20 extends from a ring An slot 241 in a projectionv of the frame'. The wobbling head 22 is fixed onthe shaft- 4. It will readily be seen that. as they head 22 is rotated the-.arm 20 is swung forward and back carrying the head 14 forward and back and thus. throughthis reciprocating move-.

ment carryingv the bar forward with each cycle of the machine. The head 111 has a bar guide 26. and two upwardly extending supports 27. A clamping dog 28 is fixed on a shaft 291 by means of a set screw 30. The

shaft 29 is journaled in the supports 27. A

ypunched and also with the positioning notch Z). After the clamping dog 28 is released,

thebar is engaged by a point 36 on an engaging finger 35. The linger is mounted on a shaft extending between the brackets 38fat the front of the supports'27. This finger rides in itsV forward movement with the blank or bar being slightly back of a notch as the bar is engaged by the dog 28.

Upon the release of this dog the finger picks up the notch and forces the bar forward, thuscorrectly positioningl the bar for cutting off. In order to relieve the point 36 of engagement of the bar on the return n ovement a link 39 extends` downwardlyk and is en` gagedbythe pinla connecting .the linkl withthe arm 15.A The arm'v 15 is provided with perforations l() and the link- 39 with perforations.- l1v whereby the' starting and stoppngipoints of the-throw of the head 14 maybe varied. .The pin 16a is smaller than the perfo'rations 40 so thatcthere is a slight; slack; or movement ofi the1 pin 161 in the` openings 40' and inY consequence withV` the initial rearward movement of. the; head: thev link 39 is drawn down lifting the finger 35 slightly oi'f the bar. The bar is delivered through a sliding platform 42. A shear blade 43 is fixed on the forward end of the table l() and a companion shear blade 44 is carried by the cross head 45. rlhe cross head is U-shaped having downwardly ef;- tending arms 46 which have the guide edges 47 operating in the guides 48 in the frame, retaining plates 49 being arranged over the outside of the guides 48 to complete the guiding surface. Connecting rods 50 extend from the pins 51 arranged in the arms 46 to the eccentrics 52 fixed on the shaft 4. It will readily be seen that with each cycle of the machine or rotation of the shaft the cross head is reciprocated. A centering push rod 53 is mounted in the table lO, the forward end of this extending through an opening 54 in the shear blade 43. The push rod terminates in a head having a downwardly extending arm 55, the rear of the head e3:- tending into a guide-way 56 in the table l0. A rod 57 extends from the arm 55 through an opening 57a in the post 13. The rod is screw-threaded at 58 and contact nuts 59 are arranged on the screw threads in the path of a forked arm 60. rllhe arm 60 is pivoted on a pin6l carried by the post 13. A push rod 62 extends from the lever 60 through a guide 63 on the extension 25 and terminates with a cam roller 64, the cam roller engaging a cam 65 on the end of the shaft 4. lith each rotation of the shaft 4 .therefore the push rod V53 is pushed forward centering the bar on the platform 42 and the push rod 53 is immediately returned so as to be brought out of the way by means of a s aring 66. p

After the bar reaches the platfo 1m 42 and is positioned by the rod 53 it is flattened and creased by the plate 67 having the creasing dies 67 a thereon. lf the blank has been previously creased the dies correct any errors in the creasing and if not previously creased the creasing is done entirely by the dies. rlhe straightening` plate 67 is carried by pins 63 which extend into pockets 69 in the cross head 45. Shoulders 70 form guides in the pockets and springs 7l tend to force the plate downwardly, the downward movement being limited by the nuts 72 arranged on the cross head aboiv'e the tops of the sockets. lilith the completion of the downward move- Vment of the cross head the straightening plate engages the blank on the platform and exerts a straightening and crease-forming pressure, the pressure being measured by the strength of the springs. rlhe platform 42 slides in guides 74 in the frame, the plates 73being arranged on the platform below the guides so as tov retain the platform in position. Guide plates 75 and 76 are mounted above the platform 42 in position to retain' the blank under the flattening plate. The

guide bar 75 has openings 75a into which the metal of the blank flows through the action of the creasing dies and thus an engagement is formed between the blank and the guide 75 which assures the stripping of the 4blank from the creasing dies. After the straightening and creasing movement above described and at the beginning of the return movement of the cross head the platform is actuated by the following mechanismzl-a link 77 extends through a yoke 78. A spring 7 9 is arranged around the link 77 and a nut 8O forms the base of the spring on the link. A nut 81 is screwed on to the link on the outside of the yoke and thus permits of a yielding forward movement of the yoke but the connection draws the platform back with a backward movement of the yoke. The yoke is pivo-tally mounted on a lever 82. The lever is carried on a pin 33 mounted in brackets 84 on the frame. A

connecting rod 85 is pivotally connected with the lever 82 and is provided with a slot 36 which extends over the shaft 4. ,The connecting rod has a roller 37 which extends into a cam slot 88 in the face of a cam wheel 89 locked by means of a key 90 on the shaft 4. rl'he cam 33 is shaped to give to the platform the folle-wing movements z-lmmec iately after the lifting of the straightening plate 67 the platform isdrawn rearwardly a suflicient distance to permit the bar retained between the guides 75 and 7 6 to drop off the front end of the platform on tothe pins 91 so that the top of the bar resting on the pins will be below the bottom of the guide 76.v The platform then goes forward, the front of the platform operating as a jaw carrying the blank with it to the position to be punched. The blank is first crowded against the front jaw so as to be straightened. The rear jaw. then recedes slightly releasing the blank so that it may be adjusted endwise and then again he blank and holds it during the puncl ng action. A dwell is then provided by which the clamping action is continued luring the punching action. After the punching action is completed and the punches have receded the front jaw of the clamp is withdrawn and there is a slight forward movement of the platform kicking the blank off the die. The fast cam is then 'provided which draws the platform to the rear, this beingthe initial movement which is above described.

Pins 91 extend from the die plates at the front hereinafter described tjirough b" "kets 91 carried by the frame. These pin s X- tend through the platform and are in position to receive the bar as the platform recedes and the blank is swept off tne platform by the guide plate Tt. rEhe die 92 is in position to receive the blank as it is pushed forward by the jaw 93 at the front end of the platform and the blam is clamped between the jaw 94 and the front jaw 93. Just prior to this 4clamping action, however, and after the bar is brought to` its position the blank is centered by a centering'mechanism hereinafter described. A centering finger 95 has a detent 96 adapted to engage in the'slots and this linger by its Vforward movement, there being one at each side of the machine, forces the blank to exactly cen tral position. The finger95 is carried by a swinging finger carrier'97, the linger carrier being pivoted on a. pin 98, the pin 98 being mounted 0n the frame. The carrier 97 is provided with a cam bar 100, the cam bar having rounded ends which extend int-o the cam slot-s 101 carried by cam blocks 102 mounted' on the arms 46 of the cross head. The cam slot has first acam surface 1012L which with the downward movementof the Crees head. drops the finger 953.v 'lhere sthen a dwell 101b inthe Camelot which holds the finger iii position as it is, moved rllhere is then a return cam surface 101 which lifts the finger Out ofthe. groove in the bar during the punching action and a.

dwell 101(1 for the' continued downward movement of the cross head while thepunching takesY place. lWhile these lingers are thus depressed and lifted by the cam slot the lhiger isV moved forward and positioned.A The bar is carried by a-screw 103 by means of which it may be adjusted to ad',-` just the. height of the linger 95 and the adj ustment is locked by a nut 104.

The i iger is provided with an enlarged end 106- which is slidingly mountedv i-nv a guide opening 107 in the carrier. A block 108y is adjusted in position by a screw 109. A pin 110 extends through the block 1 08 and cam rollers 111 are mounted o-n this pim' one at each side of the block and in the path of cams 112 which are arranged on the arms 4 6 of the crossk head. The finger 95 has an extension 95a which extends through, a` bracket 113 carried by the frame. A spring 114 is arranged on the extension 95FL and av nut115 holds the spring in position, The spring opposes the cam 112 and returns ,the linger 95 at the completion of the operation of the cam upon itl Inl the operation of this device the linger is first lowered i-n the manner above described into position to engage the slot. The cam-,112 then comes into operation and forces the finger'forward so as to effect the centering operation.v The finger is thenfraised by the cam`101c and the'forward movement is further extendedv soy as to bring the point`96 of" ther finger out, ofthepath of the punches, The finger is provided with a. Slot 95h through which theipunches can pass; A; ter theA punch g operation thev reverse', of' these4 in cvemf n takesrplace, the spring 1,14 returning 'the seit t0 the initialA position., In. erden te strengthen the finger the carrier has apromachine, the detail fer one jection 105 which overhangs andV engages the upper partv of; the finger.

Il prefer while the straightening action is taking place by the clamp to up-set the ends of the bar so as to bring all the blanks to exactly the same length. This is accoiiplished by the following mechanism: n swage 116 is slidingly mounted in a groove 117 in the frame. A spring 118 holds the swage in a rearward position. The rear end of the swage is cam surfaced at 119 -d this cam surface is in the path of a cam 120 carried bythc arm 46. There is one vof these mechanisms arranged' for each sider of the side being shown in Fig. 6. It will be seen that with tl e downward movement of the cross head just after the bar is clamped so as to be held in posi-tion the ends ofthe blank are ups-.set sufficiently to bring allv blanks to the exact length. Punches 122 are arranged in a series of'three orl fourdepend'ing 4on the shee and carried in punch blocks 123, theA punches being secured therein by screws 12311. The thrust on the punches is sustained by the screws 124- extending thro-ugh the block and the blocks are secured on the yoke by means of screws 125, these screws extending into slots 126` which permit of a slight adjustment of' the blocks. Different blocks may be used for different shoes.

Immediately following the punching action the front jaw 94 is depressed to permit the removal cf the punched blank. The jaw is mounted on a jawv frame 127 which has the guide edges 128, these edges operating in guidesl 129 on the frame` and are held in place by the guide plates 130 secured to the face ofthe frame. A connecting block 131 is secu-red tothe frame 127. A pitman 132 is connected to this block and is provided with a slotted yokeA 133 which extends ever the shaft 4; T he connecting rod is connected with a cam rol-ler 134 which operates upon a cam 135 fixed on the shaft 4` the cam being locked on the shaft by a key 136. Tl e ccnnecting block 131 is secured to the frame by screws 138 and is supplied with an adjusting screw 137 so that the total upward movement ofthe frame maybe adjusted to vary the upper position ofj the jaw as desired. The cam 135 is shaped to dropfthe immediately the pu-nches'rccede from the blank and Ypermit the plat-formy to move ferward to kick the blank ed the dies. The cam 135 isr providedl with a dwell permitting the front jaw 94 toA remain in its lower position long enough to accomplish this purpose when the cam again lifts the frame puts the jaw in place for the next blank.

In the-alternative construction; she-wn in Fig.7"t l 1e die139' is made in two partsand is slidingly mQvalnle n thelpunch carrier 140 isalsn'sli'dinglyl mounted', the tive-"being ccnnectedby a post 141 through whichA a screw-v ltening the blank; a avv in the platform; means moving 142 extends into the die. The carrier is made in two sections; the opposing faces of the sections being provided with cams 143 which engage cams 144 carried by a bar 145, the bar being secured by nuts 146 on a pon tion of the fran'ie 147 and remaining stationary. As the punch carrier is reciprocated; it will be noted that the cams 143 and 144 operate upon each other and the sections of the punch carrier are separated. A spring 148 tends to draw the sections together. Punches 149 are fixed in the carrier sections. 7unches 150 are slidingly mounted in the sections, the upper ends of the punches extending through the sleeves 151 having shoulders 152 Which limit the slidingl movement of these punches. rlhese punches 150 are held dovvn yieldingly by a flat spring 153. ln the operation of the device as the punches 150 reach the blank it is retained and with spring pressure on the blank the trvo are moved away from each other; one or the other of the punches 150 picking up a'nctch in the blank and carrying the blank to central position. After the blank is centered the continued movements of the punches c inplete the operation.

ln the construction shown in Figs. 8 and 9 the bar is carried entirely into position opposite the punches by a feeding bar 154 which is moved by the cross head 14. rIhis has a finger 155 adapted to engage a notch in the blank and this finger is pivoted on a pin 156 and is yieldingly pressed on the blank by a spring 15 ln this structure there are 'two shears 44, one at each end, so that each blank is sheared to an er; ct length. This double shear may be used in connection With the upsetting if desired.

In the alternative construction shown in Fig. 10 the blank is centered by the cams 15S at Vthe sides of the platform and as the bar is advanced.

W' hat l claim as new is:

1. a horse-shoe punching machine, the combination of a series of punches in alinement; a feeding device for a severed blank; a flattening device receiving the blank from the feeding device and operating` on the blank to flatten the same; anda positioning` device for advancingl the blank from the flattening device to the punches.

2. ln a horse-shoe punching machine, the combination of a series of punches in alinement; a bar feeding device; a shear for cutting the blai k; a flattening device for dattening the blank after it is sheared; and devices for moving the blank from the flattening device into 'position relatively to the punches.

B. ln a horse-shoe punching machine, the combination of a series of punches; a platform on which a bla-nk is delivered; a flattening device acting on the platform for fiatthe front face of the platform and blank relatively to each other to drop the blank in front of the jaw; and means for actuating the jaw clamping the blank in punching position.

4. ln a horse-shoe punching machine; the combination of a series of punches in alinement; a head carrying the punches; a flattening device carried by the head; means for delivering` a severed blank under the flattening device; and means for carrying` the blank from tie attening device to the punches.

5. ln a horse-shoe punching machine, the combination of a series of punches; a flattening device; means for delivering a blank under the flattening device; a device for centering the blank relatively to the punches under the flattening device; and means for moving the blank from the flattening device to the punches.

6. In a horse-shoe punching machine, the combination of a series of punches; a flattening device; ashear; means for advancing a blank to the shear; means for positioning the blank under the flattening device; and means for moving the blank from the fiattening device to the punches.

7. ln a horse-shoe punching machine, the combination of a tening device; means for advancing a bar to the shear; a positioning rod adapted to engage the end of a blank severed by the shear ano. to position the same under the dattening device; and means for moving the blank from the flattening device to the punches.

8. ln a horse-shoe punching machine, the combination of a series of punches; a flattening device; a shear; a device engaging a blank operated upon by the shear and positioning the same under the flattening device; and means for moving the blank from the flattening device to the punches.

9. In a horse-shoe punching machine, the combination of a shear; a flattening device; a series of punches; a positioning rod eX- Vtending through the shear in position to en'- gage a severed blank and position the same under the flattening device; and means for moving the blank from the flattening device to the punches.

10. In a horse-shoe punching machine, the combination of a series of punches vin alinement; and a feeding device for feeding a bar forward with relation to the punches comprising tn'o instrumentalities, one oper-y ating upon surface peculiarities of the blank and the othergripping the blank.V

11. ln a horseshoe punching machine; the combination of a series of punches in alinement; and means acting on the blank in po sition under the punchesfor giving to the blanks a uniformity of length.

12. ln a horseshoe punching machine, the combination of a series of punches; means series of punches; a flat-V for feeding a blank .to position to be punched; and means for upsettingV the blank to bring the blank to uniformity of length. 13. In a horse-'shoe punching macl'iine,'the combination of a series of punches; a Vhead carrying the punches; and means for upsetting the blank to bring the blank to uniform length, said means being actuated by the head.

14. In a horse-shoe punching machine, the combination of a series of punches; a swage arranged at the end of a blank positioning the blank relatively to the punches; and means for moving the swage inwardly against the blank and to bring the blank to a uniform length.

l5. In a horse-shoe punching machine, the combination of a series of punches; a clamp operating on the blank under the unches; and a sWage acting on the end of the blank for varying the length of the blank. Y

16. In a horse-shoe punching machine,

the combination of a series of punches; a

clamp operating on the blank under the punches; and a swage acting on the end of the blank for vvarying the length of the blank While engaged by the clamp.

17.' In a horse-shoe punching machine, the combination of a series of punches; a head carrying the punches; a clamp holding the blank under the punches; a sWage operating on the end of the blank; and mechanism operating the svvage, said mechanism being actuated by the head.

18. In a horse-shoe punching machine, the combination of a series of punches; a head carrying the punches; a clamp holding the blank under the punches; a sWage operating on the end of the blank; and a cam mechanism actuated by the head for actuating the swage.

19. In a horse-shoe punching machine, the

combination of a creasing device; a punching mechanism comprising a plurality of punches in alinement; and means for automatically transferring a blank from the creasing device to the punching mechanism.

20. In a horse-shoe punching machine, the combination of a platform; a straightening and creasing die; means for operating the straightening and creasing die against the blank; a punching mechanism; and means for automatically transferring the blank fromv the. platform to the punching mechanism. Y

21. In a horse-shoe punching machine, the combination of a platform; a creasing die adapted to operate on a blank on the platform; means for engaging the blank to strip the same from the creasing die; a punching mechanism; and means 'for automaticallyv conveying thel blank to the punching mechanism.

22. In a horse-shoe punching machine, the

combination of feeding'v a blank a creasing die; means for to position relatively to the V'creasing die; means for vactuating the creasthe blank under the creasing die; means for actuating the creasing die; a punching mechanism comprising al plurality of punches; and means for automatically conveying the blank from the creasing die to the punches.

24. In a horse-shoe punching machine, the combination of a punching head; a series of punches carried by the head; means for actuating the head; a clamp for holding the blank to be punched, said clamp comprising a jaw adapted to straighten the blank as it is brought to initial position; means for actuating one of the jaivs to release the blank momentarily; and means for positioning the blank during the interval of release.

25. In a horse-shoe punching machine; the combination of a reciprocating platform, the front edge of which forms a clamping jaw; guides above the platform; means for feeding a blank in position between the guides; a creasing die operating upon the blank bet-Ween the guides; means for actuating the platform to recede and permit the blank to drop in front of the platform; means for advancing the platform to carry th-e blank to punching position; and a punching mechanism operating on the blank so positioned.

26. In a horse-shoe punching machine, the combination of a platform; a guide on the platform having side openings therein; and creasing dies adapted to operate on the blank, the openings receiving the flow of metal under the action of the creasing dies to strip the blank from the creasing dies as the dies recede.

27. In a horse-shoe. punching machine, the combination of a creaser; and shears cutting the blank at each side of the creaser.

28. In a horse-shoe punching machine, the combination of a creaser; shears cutting the blank at each side of the creaser; and means for punching the blank.

29. In a horse-shoe punching machine, the combination of a series of punches; and shears cutting the blank at each end centering thesevered blank With the punches.

, 30. In a horse-shoe punching machine, the combination of a series of punches; and a pair of shears severing a blank from a bar and cutting the opposite end of thel blank to center the severed blank with the punches.

S1. In a horse-shoe punching machine, the combination of a series of punches; shears t et lili:

lBU

cutting the blank at each end centering the cutting the opposite end Lof the blank to severed blank with the punches; and means Center the severed blank with the punches; for moving the blank so centered to the and means for moving the blank to Vche 1u punches. punches.

32. In a horse-shoe punching machine, the In testimony whereof I have hereunto setV combination of a series of punches; a pair my hand.

of shears severing a blank from a bar and JOSEPH BROCK.

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