US676156A - Shearing-machine. - Google Patents

Description

No. 676,l56. Patented lune II, l90l. A. SGHRRFL.

SHEARING MACHINE.

(Application filed Apr. 14, 1900.)

3 Sheets-Sheet I.

(No lodel.)

'z ytyeaded N0. 676,l56. Y Patented lune I90L- A. scHAnFL.

SHEARING MACHINE.

(Applicafion filed Apr. 14, 1900. (No Model.) 3 Sheets8heet 2.

YU/Qiqeaaed memorials PETERS 0.. mum-mac wmummoy. o. c.

Patented lune H, I901.

A. SCHARFL.

- SHEAHING MACHINE.

A nauon filed Apr. 14, 1900.)

a SheetsSheef a.

(No Model.)

E a E E wW/v %W T iiw \Q UNITED STATES PATENT OFFICE.

ANDREAS scHAnFL, F MUNICH, GERMANY.

SHEARlNG-MACHINE.-

SPECIFICATION forming part of Letters Patent No. 676,156, dated June 11 1901. Application filed April M 1900. $erial No. 12,839. (No model.)

To all whom it may concern:

Be it known that I, ANDREAS ScHliRFL, a

citizen of Germany, residing at Munich, Ba-

, arranged knives of so-called rotary shearing-machines. These shearing-machines are used for cutting shape-iron, angle-iron, and other shape-iron whereby rectilinear move ment of both blades toward each other is avoided, and in which the shears,or rather one blade, moves or turns in such a direction that the center of motion always coincides with the middle of the shape-iron to be cut. Such shears are alreadyknown, without, however, a practical contrivance for enabling the separate knives to be adjusted as quickly as possible, so as to come into engagement immedilarger scale a vertical section of the cutting mechanism. Fig. 5 is the same section as Fig. 3, but in a larger scale and omitting the driving mechanism.

The frame a of the shearing-machine is formed of two plates kept at the desired dis tance apart by screw bolts. The cutting mechanism is placed within the frame formed by these plates. The principal requirement for this kind of shearing-machine is the following: The shape-iron to be cutmust be entirely surrounded in front as well as behind the point of section by a system of knives or cutters, a requirement which in the present case is met by two sets of four knives m, each knife corresponding to the respective side of the same time.

the profile-iron, one set being embedded in one plate of the frame a in order to hold rigidly the profile-iron, while the other set is secured in a swinging segment I) and is designed to cut away the shape-iron. In each set three of these four knives m are adjustable,while the fourth is stationary in the machine. The knives must be changed according to the shape-iron to be cut. The adjustable knives in one set are movable to and from the shearing axis in a direction transverse to the direction of movement of the knives in the other set-that is, in a direction substantially perpendicular to the movement of the other knives.

If the iron bar-for example, a girder-is to be out, all adjustable knives after being properly adjusted must be so firmly pressed against the iron bar as to make the bar completely immovable, a requirement that may be brought about by correspondingly turning the screws 5. This being done, the machine is started, whereupon the back part of the toothed segment I), which engages with the toothed wheel a, is raised, whereby the segmen t-piece, which is provided with a circular lateral projection d, pivotally disposed in a corresponding perforation or recess in the frame, makes a partial revolution, sufficient, however, to make the cut. Immediately after the segment is started all the knives disposed in the segment will come into engagement on the side corresponding with the sense of rotationthat is to say, they begin to cut at The arrangement of the driving mechanism is easily intelligible from the drawings and need not be further described.

As the pressing on of the single knives by means of screws would be too complicated and would require too much time for a profitable working, the system of knives mounted both on the frame and on the swinging segment is arranged as follows: Besides the lateral knives,.which remain in position for all sizes of shape-iron, the upper and lower knives must be always changed for each size of the shape-iron. The lower of the knives is not adjustable, while the upper knife is suspended by means of pins 16 to the slide f, moved up and down by the eccentric e in such a manner as to be still so far from the bar in the opened position that the latter may easily pass through.

too-great displacement of; theknives. This is howrever, not necessary-in; the case of-ythe frame f5 By tilting the weight-lever n, secured to the shaft of the eccentric e, thelate ter makes a partial revolution, and by means of its sliding piece 9 lifts or presses down-- Ward the slide f, according to the eccentricity. Thus the upper knife, secured to the slide f, can be pressed sufficiently against the shape-iron to bring the latter into contact with the three cutting edges of the upper and lower knives. The lateralknives are pressed;

against the shape-iron in a somewhat diffe r-. ent manner. In this case neither a firmlyfixed knife nor the arrangement described for; the upper knives is available, since the dimensions of" the different girders requirea upper, knives, as the variations iri'the thicknefsfssof the sizes of girders isso slight thatouterknivesm are securedto slides-7c, movableiirthe outer slides 1}, andpushed-to and" fromthe girder by turning the eccentricse,

which are; provided in the well-known manner; with sliding pieces g, with. aid of the weightedlevers n, mounted on the eccentricshatitszand connected by the bars-0 to the above=mentionedlevers n, destined to move uprand'dowmby means of their eccentrics e thevupperknive's, the twosets of knives be= in g thirs pressedsimultaneously to the girder by tilting-the lever systems n. As mentioned before, the inner slides 75, of the outer knives are movableinthe outer slides i, embedded inqtl e frame aandin the swinging segment b al di adjustable by meansv of the screwss. Thisdoubl'eadjustability allows, on the one hand'rthe knives'to be quickly adjusted on theshaperiron being changed, whereas,- on the other-hand; the;-bar canbe rapidly fixed-and loosened; Theouter slides-11 of the outerlateral k nives are adjusted only whenanother size-of shape-iron is to becut. Otherwise all thatmeed t'o-be done for starting the shearingmechanism-isto turnthe four eccentrics e f-W0 in the frame; a and two in the swinging segment-b' beforeorafter each cutting in' or dertofi-x or loose at once the girder. Thus themanipulation of-themachine is simplified;

Theframea or the side wall'in whichthe swinging segment is-pivoted has, besides the perforation forthe projection dot the swing: ing segment, a further segment-shaped-apercure-12 for the shaft z of the eccentric, in or d er-tofallowttheswinging of thesame. The projection d hasalso apeforation or aperture q', thesize of* whichvarjies according to the profiles ofthegirder teloe out; If ins'teadof Theeccentricturns in aslid-f ing piece. orhead: g guided-- inthelslide or girders other shape-ironistobe cut, it is only necessary. to substitute.suitablekniyes.

I claim I 1. In a rotary shearing-machine, a plate provided with two pairs of cutters, one of each pair of cutterslbeing adjustable to and from 'the shearing axis, said adjustable cutters being arranged to movein a direction transverse to each other, whereby different sizes and forms of shape-iron may be operated upon. x 2. In a rotary shearing-machine, the com- Ebination ofa fixed and an adjacent rotary plate each plate being provided with two pairs ofcutters, one of each pair of cutters being adjustable to and from the shearing axis, whereby difierent sizes and forms of shapeiron may be'operatednpon.

,nation-ofaa fixedand an adjacent rotaryplate cutters, one ofeach of saidpairs-of Gutters other, whereby different sizes and forms of shape-iron may be-operated' upon.

4".v In a rotary shearing-machine,the=combi= mounted'in said frame and-arranged to move therein ina direction toward and fromthe shearing axis, means for ad justing the position of said frame, and means for-adjusting the position of said cutter head in said frame.

5, In a rotar'y shearing-machine, theco mbi= nation of a frame arrangedto-slide toward mounted in said frameand arranged toslide therein inna direction toward andsfromthe shearing axis, means foradjustingithe,posi tion of said frame, and means foradjusting the position of said:cutter-head inthe-fra-me; 6. In a rotary shearing=machrine, thecombination ofa frame arranged'to movetoward and from the shearing axis, a cutter-head mounted in said frame andarrangeditomove therein toward and from the shearingtaxis, a :pivoted lever, and: meansiforcausing themssaid cutter-head relative to said fr'ame.

7. In a rotary shearing-machine, thecombi and; from the shearing axis, a cutter-head mounted in said frameand arranged tomove therein towardand from the shearing-axis, a pivoted lever, an eccentric connected with said lever-and arrangedto-be actuated there= by, and means forcausing the movement of said eccentric to adjust the POSitlOlLOf said cuttepheadrelative to said frame;

8-. In arotaryshearing machine,thecombi "nation of r a frame arranged to move to-ward andfrom the shearing axis, ashaft journaled in the said frame,a cutter-head mountedinsaid frame and havinga slot: therein-, said 'cuttergheadbeing-arranged to i move in saidiframe each plate being providedwith two-pairs of \bei'ng; adjustable to and' from the; shearing axis, said adj ustable-cuttersabeingqarranged tomove in a direction transverse. to eachnation of aframe arranged to movetoward andfrom the. shearing axis, a; cutter-head and from the shearingaxis, a cutter-head cillation of the-lever to adj ust th e position of 3. Ina-rotary shearing-machine,thecombi- Y nation-of a frame arranged: to move toward toward and from the shearing axis, a block arranged to move in the slot in said cutterhead in a direction transverse to the direction of movement of said cutter-head, an eccentric mounted on said shaft and engaging the walls of an aperture in said block, and means for oscillating said shaft.

9. In a rotary shearing-machine, the combination of a frame arranged to slide toward the shearing axis, a shaft journaled in said frame, a cutter-head mounted in said frame and having a slot therein, said head being arranged to slide in said frame toward and from the shearing axis, a block arranged to slide in the slot in said cutter-head in a direction transverse to the direction of movement of said cutter-head, an eccentric mount-ed on said shaft, and engaging the walls of an aperture in said block, and a weighted lever connected to said eccentric.

10. In arotary shearing-machine, the combi= nation of a frame arranged to slide toward and from the shearing axis, a cutter-head mounted in said frame and arranged to slide therein in a direction toward and from the shearing axis, a knife secured to the said outter-head, a second frame arranged to slide toward and from the shearing axis in a direction transverse to the direction of movement of said other frame, a cutter-head mounted in said latter frame and arranged to slide therein in a direction toward and from the shearing axis, and means for adjusting said cutter heads simultaneously toward and from the shearing axis.

11. In a rotary shearing-machine, the combination of aframe arranged to slide toward and from the shearing axis, a shaft journaled in said frame, a cutter-head mounted in said frame and having a slot therein, said cutterhead being arranged to slide in said frame in a direction toward and from the shearing axis, a block arranged to slide in the slot in said cutter-head in a direction transverse to the direction of movement of said cutter-head, an eccentric mounted on said shaft and engaging the walls of an aperture in said block, a second frame arranged to slide toward and from the shearing axis in a direction transverse to the direction of movement 'of said other frame, a shaft journaled in said second frame, a'cutter-head mounted in said second frame and having a slot therein, said second cutter-head being arranged to slide in said second franie in a direction toward and from the shearing axis, a block arranged to slide in the slot in said second cutter-head in a di rection transverse to the direction of movement of said second cutter-head, an eccentric mounted on said shaft and engaging the walls of an aperture in said second block, aweighted lever mounted on each of said shafts, and a lever connecting said levers and arranged to cause them to act simultaneously and thereby move said cutter-heads toward and from the shearing axis simultaneously.

12. In a shearing-machine the combination of an inner slide 7t moved to and from the girder by means of an eccentric c with an outer slide 1' adjustable by a screw 3 for the purpose of an easy'and quick adjustment of the knives according to the size of, the girder substantially as described. a

In testimony whereof I affix my signature in presence of two witnesses.

ANDREAS soHi-iRrL.

Witnesses:

FLORENCE J. MCDONALD, ANDREAS SoRG.

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