US723599A - Combined split and bar-cutting power-shears. - Google Patents

Description

No. 723,599. 'BATBNTED MAR. 24, 1903.

I. GRIMM.

COMBINED SPLIT AND BAR CUTTING POWER SHEARS.

' APPLICATION FILED DBO. 2o. 1992.

E0 MODEL.

of, attention being called to the accompany- `marked thereon, which form also a part of UNITED STATES IGNAZ GRIMM, OF CINCINNATI, OHIO.

COMBINED SPLIT AND BAR- CUTTING POWER-*SH EARS.

SPECIFICATION forming' part of Letters Patent N0. 723,599, dated March 24, 1903.

' Application liled December 20, 1902. Serial No. 135,985. (No model.)

To @ZZ whom it may concern,.-

Be it known that-I, IGNAZ GRIMM,a citizen of the United States, and aresident of the city of Cincinnati, inv the county of Hamilton and State of Ohio, have invented a certain new and useful Combined Split and Bar-Cutting Power-Shears; and I do declare the following to be a clear, full, and exact description thereing drawings, with the reference characters this specification.

This invention relates to improvements in the construction and arrangement of powershears for cutting metal, more particularly iron and steel, and in shape of plates or bars, which latter, again, may be fiat bars or socalled angle-bars or angle-irons or other shapes. The machines now in use for this class of work are specially constructed to suit the particular metalv to be worked as to its shape and form, so that there are so-called split-shears to cut metal plate, bar-shears to cut ilat bar-iron, and angle-shears to cut angle-bars. There are also machines which may be arranged to permit cutting of either dat or angle bars on the same machine, and there are still others which may be adjusted to permit cutting of either plate or ilat bars, the capacity of these machines adapted to such alternate use being, however, generally limited as regards one of the kinds of work to be done thereon to the dimensions, particularly length, of such work, so that in all cases of such possible double use the machine as to one of the uses cannot be used as'fully and advantageously as a machine constructed solely for one particular use.

The object of my invention is therefore to construct a shear adapted for use in connection with all the shapes of iron mentionedthat is, plate, dat bars, or angle-bars-the use in connection with each shape to be as convenient and as unrestricted as in a machine specially constructed for the particular kind ot work.

In the following specilication and particularly pointed out in the claims is found a full description of theinvention, together with its operation, parts, and construction, which latter is also illustrated in the accompanying drawings, in which- Figure 1 shows the front side of my improved power-shear, the same being arranged to cut bariron, particularly angle bars, a plate of metal being also shown in dotted lines as it appears during its passagethrough the shears while being cut. Fig. 2 is an end View of Fig. 1 with the lower part in' section. Fig. 3 is a top View ofthe lower part of the machine shown in the preceding figure-that is, it shows its bed or anvil.v Fig. l:shows a front view of my improved shear embodied in a different type of frame and used for cutting plate metal. Fig. 5 is a side view of Fig. 11; and Fig. 6 shows a part of Fig. l-that is, the operative part-and arranged for cutting fiat bars.

In such machines two shear-blades or cutting-jaws are generally used, of which one is held in a stationary position, while the other, usually the upper one, has a movement to and from it. The mechanical means whereby this movement is obtained forms no part of my invention.

9 is thelower jaw, seated in a socket. 10, contained in the bed oranvil 11, formed by the lower part -of the machine-frame and held there by bolts l2. The upperjaw (indicated by 13) has two parallel sides '13EL 13@ and is supported by guiding means in a manner so that when reciprocated it'moves to and from the lower jaw at an angle. means may be simply guideways,within which the side edges 13 13 slide, or it may be an entire inclosing casing, as shown, and being formed in part by a portion 14 of the upper part of the main frame and a removablecap 15. The lower part of this jaw 13 is shaped to form two cuttingedges, one, 13b, and another, 13G, arranged substantially at right angles to each other. Of these two cutting edges the lower one, 13b, is substantially parallel to cutting edge 9a of the lower cutting-jaw 9, subject to such divergence as is usually provided to obtain a proper self-clearing shear cut. Thereis, further, an upright cutting-jaw 16, fitted into a socket 17 and held therein by bolts 18. It is arranged closely to jaw ,9, so that the cutting edge 16a of it forms with cutting edge 9a a continuous angular cutting edge, as shown in the drawings, most clearly in Fig. 1. The other or upright cutting edge 15c on the movable jaw is arranged substan- These guiding IOO tially parallel to this cutting edge 1G of the upright jaw 16, subject to such slight divergence necessary for a proper shearing cut, so that, as will be seen, fourcutting edges are capable ot entering simultaneous/ly into action. Of these 13b 13c form a continuous angular cutting edge on the upper-jaw and work in conjunction with the continuons angular edges 9a and 161 below. Each cutting-jaw is removably attached for grinding or renewal,

.the lower jaws 9 and 16 from their sockets 10 and 17 and the upper jaw 13 from within its guiding means or from a carrier 19, to which it is detachably connected. It will now be seen that with this upright jaw 16 in position angle-bars A maybe cut, as shown in Fig. 1, while when it is removed the machine may be used as a so-called split-shear for cutting plate metal P, as shown in Figs. 4 and 5 and in dotted lines in Fig. 1. Flat bars F may be cut in either conditionf-that is, with jaw 16 removed Or in position, as shown in Figs. 1 and 3 or 6. In the latter case this jaw may serve as a guide and stop for the i'lat bars while resting against it, as shown in Fig. 3, and the same as is shown in case of the angle-bar in Fig. 1.

The reciprocal motion of the upper jaw to and from the two lower ones may be obtained by any mechanical means. It may be connected to an oscillating` beam 20, to which its carrier 19 is attached by a link 21 and which is actuated by a crank or eccentric 22, operated by a power-driven shaft 23, all as shown in Figs. 1 and 2, or the machine may be constructed on the customary type used in powerpunches and shears and as shown in Figs. 4 and 5, the upper jaw being operated from a power-driven shaft 24 by means of an, intermediate eccentriclink, crank, or cam. As before stated, however, no invention is claimed for these mechanical means for operating the upper jaw. The frame should in each case be so arranged as to form no obstruction to .the advancing metal when splitting plate, nor should any part of it be in the way when inserting long bars. In the frame shown in Figs. 1 and 2 this requirementis fully realized, the upper part in front being set back, as shown at 25, permitting one of the separated parts of the plate resulting from the splitting of the same to pass straight on. On the rear side the other of the split parts of the plate passes under this offset, as shown at 26 in Fig. 2, also in Fig. 4, and in dotted lines in Fig. 1. The metal readily passes under this latter ottset by reason of a tendency to hang and curve downwardly, due to the action of the upper jaw on this part of the split'plate. In either case, either by formation ot' the frame or by attachment, a shoulder 27 should be provided on the frame for the upper end of upright jaw l16 to bear against, so as to reinforce its position against the action of the upper jaw when in angle-cutting cutting edge 13C moves toward it. Customary adjustable gages and stops against which the ends or sides of the metal are shoved to determine the exact position of the cuts and to facilitate work when much of the same kind is to be done are implied, but not shown.

Having described my invention, I claim a new- 1. In a power-shear for splitting plate metal and for cutting bar metal, the combination of a lower cutting-jaw, an upright cuttingjaw, the cutting edges of the two being so arranged as to form a contin nous angular cut-- ting edge, the upright jaw being attached in a manner to be removable independently of the other one, an upper jaw having two cutting edges also arranged at an angle toveach other and means for operating this latter jaw in a manner that its cutting edges are capable of operating simultaneously in conjunction with either or the two other cutting edges.

2. In a power-shear for splitting plate metal and for cutting bar metal, the combination of a lower cutting-jaw, having a substantially horizontal cutting edge, an upright cuttingjaw having a substantially vertical cutting edge, both these cutting edges being continuous, a socket for each of these jaws, means for securing each jaw in its socket in a manner to render each independently removable, an upper jaw having at its lower end two cutting edges 13b 13c arranged at an angle to each other and forming a continuous cutting edge, two parallel guiding-edges 13 on this jawabove its cutting edge, mechanism for moving this upper jaw to and from the other jaws and supporting means engaging its guiding edges 13a in a manner that in the movement of the upper jaw toward the lower one, the apex ot the angle of the upper cutting edge is caused to move toward the apex of the rentering angle formed by the lower cutting edge.

In testimony whereof I hereunto set my signature in the presence ot' two witnesses.

' IGNAZ GRIMM.

Witnesses C.' SPENGEL, ARTHUR KLINE.

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