US1507838A - Bending machine for angle irons - Google Patents

Description

Sept. 9 1924.

N. KRUMP BENDING MACHINE FOR .ANGLE IROHS led DSC. 23 1922 v2 Singin-Shag?. 1

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W/ 'mn/5.56

sept. 9, 1924. 1,501,838

N. KRUMP BENDING MACHINE FOR ANGLE IROHS Filed Dec. 2s, 1922 2 murano, 2

f, lll /A 9F .J4 "rf WI; fr f F Patented Sept. 9, 1924.

,UNITED STATES NIC KRUMP, 0F CI-IICAGrO,` ICLVLINOIS.

BENDING MACHINE ronl Altena rito-irs.

`Application ined December 23, 1922'. Serin N. 608340.

To all whom t may concern.:

Be it known that I, Nro KRUMr, a citizen of the United States, and a resident of Chicago, inthe county of Cook and States. of Illinois, haveinvented certain new anduseful Improvements in a Bending Machine o for Angle Irons, of which the-following, when taken in connection with the' drawings accompanying and forming a part hereof, is a specification. y

This invention relates to a machine for bending angle irons or bars into a circular form, for use in lmaking tanks, and 'other' articles. y

Among the objects of the invention are' to obtain a bending machine by means of'which an angle iron or bar may be bent into circular form, and an angle iron of a different size and thickness' than said first named angle iron may also be bent into circular form by an adjustment of the co-acting bending rolls ofthe machine5to obtain means to readily and accurately adjustv said rolls and to maintain them in an adjusted position, both vertically and horizontally; and tov obf tain a bending machine which is 'simple in construction, easily operated, durable, and not liable to break or get out of order;

In the drawings referredto Fig. l is a top-,plan yview of a machine embodying the invention. i j l Fig. 2 is an end elevatio'nof said machine.

Fig. 3 is a verticalsectionon linew' of Fig. l, viewed as indicated by arrows.

Fig, lis a vertical section'on lined-fea of Fig. l viewed as indicated by arrows.

Fig. 5 .is a vertical section on line 5;'5 of Fig. 1viewed as indicated byarrows.v

. A reference character appliedto designate a .given part indicates said lpart throughout the several figures of the drawings wherever the saineV appears.l h Y A- represents the table of the machine, and a,'a,fthe upper ends of legs supporting the table. C represents a vertical shaft whichis rotatably mounted in ournal bearing` D. E represents a collar whichis'rigidly secured on shaft C by'se't nut c. F representsa roll `which'is mounted on'shaft C to be vertically adjustable,` and `toturn therewith. The periphery of rollFO isprovided-with corrugations, (Fig. 2), and said roll acts as a driving roll, tov forcethe angle iron or angle bar which is to be curved. through the machine. f, f represents nuts which are setl against'each other on bolt f.

representsafafplate' whichA is secured' on the upper side of` roll F by the screws f', f. F "represents a washer looselyk mounted on boltv -f represents a bolt which extends throughbolt' and is'enlarged'at its lower end." The bolt fis split at its lowerend, so that itv is held in' au' adjusted position'4 in shaft C when the bolt f" is drawn upward to set the lower enlarged endthereof inthe split .part of bolt f.. ,FH, represent nuts which are set against; each other to lock bolt f in position when saidtbolt is -*drawn upward as aboverecite'd.. 'v )UU-"represents the hexagon upper end or head-ofk bolt To adjust roliF vertically on: shaft isY driven `,downy toi release bolt j', and said boltv f is turned' by plaoinga wrenchonk n head ff thereof, thus raising or lowering the roll F, as required; said roll resting on the locked nuts f, f and" supported thereby. After saidjroll Fy isadjusted it is locked inposition'by turning 'thelower one of nutsF to bringthe enlarged lower end `of bolt if "firmlyintothefsplit'lowerend` off bolt 7, thenpper one of said nuts F" *1s v then set iirm'ly againstithe lowerv one l to locksaid bolt f inf-place. lrlhe-veitical adjustmenty ofroll' F4 is" determined by' the 85 v thickness ofv thehorizontal flange of--the l angleironv A(orbar)"which is'vbbeing forced through theV machine', when the bend desired requires'sad fiange'to be underneath said y roll: andH said roll is adjusted sothat the l90 p lower end'there'of elofsefto `table A, when the bend desiredfrequiresfsaid yhorizontal flange' to ber` underneath the hereinafter describedrolls. j

G fepresents a-H l H v is 'rigidly mounted"v onn'shaft C, and-.H represents a drivingv shaft having worm L mounted thereon ,to engage' with said worm wheel G. Jr', hQ-representthe jour-l nal bearingsI of shaftV H, and said-bearings loo are 'secured tov tlm-3lV underside 'of table A. I, J", K', respectively represent' roll'sarrang'ed to 'co-act withroll F,- in; the operation of the machine. Rolls'l, J, K, are respectively mounted on shaftsz', j, In. Rolls'land J are 105 verticallyadjustable on shafts y', in the fsame mannerl as rollV F is adjuseesly on shaft C, and for the same reasons assigned for the" adjustnient.l of said rolly Shaftz' is rigidly mounted in` table' A, and shaft j `is 11o rigidly meemain frame Frame j is movablylmohnted'in 'slot or apertureL prov worin gear wheel' which 95 vided therefor in table A. ShaftI Z5 is rigidly mounted in frame s, and said frame is movably mounted in slot L provided therefor in table A. L is a slot under slot L, but is not so wide as is said slot L. m represents a bolt by means of which the frame la is forced forward into an adjusted position in slot L; and said frame, after being adjusted as recited, is rigidly held inits adjusted position by the block Z, bolt K and nut K. M represents a spring one end of which abuts against frame y", and the other end against plate m. m represents a bolt by means of which plate m is forced against spring M to control the tension thereof. Roll J lis yieldingly, held against angle iron X by said sprinmM.

Roll K is adjusted vertically on fiaine c, by loosening set screw 7c and raising shaft le, and when the adjustment is made said set screw is againtightened in collar le to secure the collar in place on shaft 7c. In case the horizontal member of the angle iron which is being bent `is to be on the inside of the curve obtained-the lower end of roll K is-close to contact with the upper face of the table A, and in case said horizontal member is on the outside of said curve it is raised so'as tobe in close contact with said horizontal member.V

The function of roll I, when an angle iron or bar is beingy forced through the machine, is to hold said iron or bar in proper position, and the function of roll J at said time is to hold said iron or bar against roll F, so that said roll F vwill forcethe iron or bar which is to be curved through the machine. v

N represents a roll which is rotatably mounted in frame a, with its shaft or axle in a horizontal plane, said frame being positioned in recess N in table A, and vertically movable, to correspond with the thickness of the horizontal member of the angle iron or bar which is being forced through the machine. O represents a wedge which extends underneath frame n, the under face of said frame corresponding with the upper face of said wedge, to maintain the shaft or axle ofroll N in a horizontal plane. O represents a bolt which is illustrated as provided with groove O. P represents a pin positioned in said groove and driven into vertical member p at one end .of wedge O, and illustrated as integral therewith. The turning of bolt O moves the wedge O, to raise or lower fra-me n, as required, to correspond with the thickness of the horizontal member of the angle iron -orbar which 4is beingv curved.

. Q, ',R, respectively -represent 1 eccentric aiolls,;-zithich are rigidlymeuntedgpn, shafts Of'eslesfai aan@ la waarmee@ hay es or levers which are secured in said sia ts or axles and by means of which said eccentrics are forced against the angle iron or bar (X), as said iron or' bar is being forced through the machine. The function of these eccentrics is to prevent squirming, as it is called, of the angle iron or bar as it is being bent or curved in the machine. When the horizontal member of said angle ironk or bar is on the outside of the circle or hoop which is being made one ofv said `eccentrics is forced against the vertical member of said iron or bar, and when said horizontal member is on the inside of'said circle or hoop the other of said eccentrics is forced against said vertical member.

The rolls F, l, J, K and N being properly adjusted for a given angle iron or bar, to operate the machine said iron or bar is forced between rolls F and J, and shaft H j is rotated, thereby turning roll F, and said iron or bar is thereby forced forward to and beyond roll K, and is thereby curved, the amount of said curve being determined by `vthe adjustment of said roll K, relative to roll F.

l claim:

l. ln a machine for bending angle iron, c

a plurality of vertical shafts, one thereof a driving shaft, and a plurality of rolls mounted on said shafts, in combination with means to vertically adjust said rolls, said means comprising a screw threaded hole in the upper ends of said shafts, bolts provided with corresponding screw threads fitting said screw threaded holes, means to suspend said f rolls on said bolts and means to secure said bolts in a determined position.

2. In a machine for bending angle iron, a plurality of vertical shafts, one thereof a driving shaft and one rigidlymountedsin on said bolts, plates on said bolts resting on said nuts, and means to secure said plates to said rolls, and means to secure said bolts j in an adjusted position. v

3. In a machine for bending angle iron forced therethrough, a table, a corrugated roll, the lower end thereof in spaced relation to said table and a rotatably mounted ver tical shaft, said roll rigidly secured on said shaft, a worm gear. wheel below said ltable rigidly `secured on said shaft, an additional analmenteleemte@ met fbi-Warm "Q11 nsaid,additigiial shaft arranged] nterm sh ...n .t 5 .e iria-i -'f with said worin gear, 1n combination with` a roll rotatably mounted in a frame positioned ina recess in said table, means to adjust said frame vertically to maintain said roll in determined spacedrelation to said lower end of said first named roll, an additional roll mounted on a vertical shaft and means to yieldingly hold said additional .roll in spaced relation to said first named roll, means to adjust the tension of said means to yieldingly hold said roll, another and additional roll mounted on a rotatable vertical shaft, and adjustable means to maintain said last named roll in determined spaced relation to said first named roll, a roll mounted on a rigidly positioned shaft, also in spaced relation` to said first named roll, and eccentrics mounted on horizontal shafts, with means to force said eccentrics into contact with said angle iron which is being forced through the machine.

ff. In a machine for bending angle iron forced therethrough, a table, a corrugated roll, the lower end thereof in spaced relation to said table, a rotatably mounted vertical shaft, said roll rigidly-secured on said shaft, a worm gear wheel below said table rigidly secured on said shaft, an additional shaft rotatably mounted below said table and a worm on said additional shaft arranged to intermesh with said worm gear, in combination with a plurality of additional rolls, one of said additional rolls rotatably mounted on a rigidly held vertical shaft, another of said additional rolls mounted on a vertical shaft which -is movably `mounted and means to yieldingly hold said last named roll in spaced relation to said first named roll, and the remaining one of said additional krolls rotatably mounted on an adjustably movably mounted shaft, means to adjust and maintain said last named shaft to hold said-last named roll in a determined spaced relation to said first named roll, said table provided with recesses, a vertically movable frame in one of said recesses, a roll rotatably mounted in said last named frame, vand means to adjust and maintain said frame to hold said roll therein indetermined spaced relation to the lower end of said first named roll, and eccentrics, one thereof-mounted above said table and the other in one of said recesses'in said table, and handles to said eccentrics whereby. they may be forced against an angle iron which is being forced through the machine.

. NIC K12-UMP.

Witnesses f Tios. J. KELLEHER, B. S. BROWN.

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