US1746032A - Tie-plate machine - Google Patents

Description

Feb. 4, 1930. H. M. ELY

A TIE PLATE MACHINE Filed Oct. 1, 1926 2 Sheets-Sheet llllllll IJ INVENTOR BY 'Harold 114.54]

Feb. 4, 1930. H. M. ELY

TIE PLATE MACHINE Filed oct. 1. 192e 2 Sheets-Sheet 2 r l l l I l I l Il Patented Feb; y4, 193e COME-ANY .n vA15'piieuioii`fue@ october 1, l1926.'y Seria; No. 139,069. y,

l invention relatesto' Aimprovements *inV v and Vcontrols thek .feeding operation' `in lsef 'due'nce with the working'step. v ,v Y

r The novel features will be r'more fullyun- 'i l 10 derstocd 'from the following description and fFig. 1 is ai partial` front'elevation'of a tie 15 invention; y Y Y Fig..2 is aside elevationofthe mechanismVv Fig; 3 is a sectiV nal View showingtlie pinch roll operating Amechanism and i l'-20 l1l`igxlis a'detailview cfthertrunnion'block.

,NReferringvtothe drawings: 1 0. indicates I'generally a tieV plate machine ofpa well known type comprising a tablej11 carrying the die block 12 and areciprocating head 13 carry- 125 ing the punches'V 1andthe`shear blade 15.

Thedra'wingsvdonot lshow the tie platenla- Hchine in its complete form, jas it is 'not 4considered to be partlofiny invention, but only asmuch'thereof hasbeen shownas will suf- '30 iice to' show theconstructionof my invention therewith'.k It shouldbe understood that the head 18`may be reciprocated by means well known to theart. l

Fixed at the side of the table 11 is a bracket 'g 435- 16' vwhich l serves tov support the Vmechanismv provided forthe purpose of feeding the work y I 1 oted to the latter and depending therefrom` is '1 to the punching and shearing operation.

f A. pair of pinch rolls 17 and 18 are pro vided for feeding-the bar 19 to position-bel 17* 40 neath the punches 14 and shearblade 15.k

- The bottom roll. 17 is rotatably mounted in bearing blocks-2O which are slidably mounted in suitable guideways formed in -4 the bracket 16 andare held yieldingly in elevated 45.5 position by the vsprings 21. The bottom roll 17 is positivelyand continuously drivenrin a feeding direction by a -motor 22 through'a speed transformer22 which is operatively connected to 'sai-d motor by a iieXible coui-f50 .pling The upper pinch roll 18 is mounted u ceive an adjustablel collar 29'.` plate machine embodying one Aform ofmy 1 aperture formed atr the Vextremity of anV arm inV suitable bearings formedat the end ofthe. Vhorizontally disposed spaced arms 23 of the bell crank lever 23. -The latter is pivotally j frmnonn mt. nngpgrrnnnrsund, 'rEiiN'sYLvANIAQAssIGNQn tro13nur'rrnnifinimsannel l.mounted to the` bracket 16, as at 24. The

k"vertically extending arm 25 of the lever 23'@l Vis bifurcatedV atits upper end and rotatably receives the trunnion'block 26. Q The latterv is* aperture'dto'receivethe rod 27 -which eX- ten-ds laterally from the side ofa stationary 'portion of the machine to which it is pivoted,

asiat 28. The rod 27 extends b'eyondthe trun nion block and is threaded at .its'ends"TtorrfeL.-n

` Interposed between thecollar 29 'andthe j trunnion blocki26 is.a coil'spring- 30 which surrounds thelrod'27 and serves to urge the 'arm 25 toward-theV right, therebyconstraining the upper pinch roll toward its lower p04 l sition. In 'this position the/rolls are adapted to pinch the bar and feed it forward aga-inst? the stop 31.

7c KVv In'orderto discontinue the:

feeding of thebar during the .punching and lshearing fperations, without discontinuing Y the operationof the motor 22,41 providefa@l device which cooperatesfwith thehead- 13 to V"elevate the upper pinch roll suficiently to,

relieve the traction pressure of the rolls ordinarily required to move the bar; 'lhis Cle/Vice f comprises a pair oflink members32and 33 Vconstitutingv 'a ktoggle which" v is pivoted at one end, as at'34, to ya stationary portion 'of the Ymachine and, at its other end is rotatablyv mounted on 'theextending ends of thetrun nionblock 26. The contiguous ends of the linksy 32 and -83 are 'pivotallyi connected to each other by means of the king pin 35. Piv# a "rodBG which extends' slidablythrough an the pinch rolls grip thebarl) and thelatter. y is fedV intolposition beneath the operating` tools.A -Tli'e bottom pinch roll 17 is elevated sufficiently so that the barl does not dra across the-upper face of the die block` 12an latter causes the links 32 and 33 to straight-V en, thereby rocking the arm Vof the lever 23 towards the leftvagainst the pressure of the coil spring 30. The movement of the arm 25 toward the left raises the upper pinch roll f 18 and relieves the tractive pressure of the pinch rolls on the Abar and thus renders the rolls ineffective to move the bar.

It will be seen that by adjusting the collar 38 the movement of the arm 25-may be easily coordinated with the stroke of the head 13, so that feeding of the bar is discontinued ,while the punches and shear-are operating upon the work. f Y

The upper adjustable collar 38 isprovided to assure the return of the toggle to its original position. When the head 13 moves upwardly the arm 37 engages with said collar and moves the rod upwardly thusk contracting the links upwardly beyond their deadV center. The upward movement of the Vlinks causes the arm to rock toward the right and allows vthe coil spring 30 to yieldingly force the upper roll to its lower position.

In operation the bar, having the configuration in cross section the Vparticular shape desired in the finished tie plate, is fed between the pinch rolls. The head 13 is reciprocated and at a predetermined position in its travel the Varm 3'? engages the collar 3S and draws down the rod 36 which in turn causes the toggle to rock arm 25 toward the left. The movement of the lever elevates the upper pinch roll and thus renders the pinch rolls i ineffective during the continued downward stroke of the head, at which time the finished tie plate is shear-ed from the end of the bar and the set of holes is punched in the portion of the bar which, upon another advance movement of the bar during the upward movement ofthe head, constitutes another finished plate. Y

It will be clear from the foregoing description that I have devised a simple and novel mechanically controlled feeding mechanism which automatically controlled thel feed of the work to a punching and shearing machine.

While I have shown my invention in but one form, it will be obvious to those skilled in the art that it is not so limited but is susceptible of various other changes and modifications without departing from the spirit thereof, and I desire, therefore, that only ysuch limitations shall be placed thereupon as are imposed by the prior art or as are speciiically set forth in the appended claims.

Having thus described the invention what I claim as new and desire to secure by Letters Patent is: y f Y' 1. In a device for feeding work to a machine, the 'combination with a 'reciprocating member, of a driving roll, an idle roll, a

V'.leversupporting the latter, means; toA constrain the idle roll towardswthe drivingroll,

head, aV pair of rolls, a lever pivotedto said-Y bed and supporting one ofsaid rolls, means constraining' said rolls towards each other, a toggle connected at'one end to said stationary bed and at itsother end tosaid lever, a

rod having an abutment and depending fromf said toggle, andimeans on said reciprocating member adapted to engage said abutment.

3. In a punching machine, the'combination of a Vstzkltionary bed, a reciprocating head, a pair of pinch rolls, means to driveone of said rolls, a lever pivoted to said sta-- tionary bed, bearing members on saidv lever for supporting one of said pinch rolls, a yieldable support forthe other roll, means constraining said rolls towards each other, apair oflinks, a kingpin'pivotally connecting said links, a pivot connecting one of said links to saidlever, a Apivot connecting the otherV of said links to said stationary bed, -aV rodpivoted to said king pin, an abutment, member mounted on said rod, and a member attached to said head adapted to engage said abutment member. f y

In testimony whereof I hereunto. affix my signature. y Y

. HAROLD M.V ELY.

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