US1343079A - Shears - Google Patents

Description

T. J. FEGLEYWAND G. o. LEOPOLD..

SHEARS.

APPLICATION FILEUAUG. 19. 1919. n y LSQSEU' Patented June 89 1920., l v z SHEETS-'SHEET' 1.

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SHEARS APPLICA'l-IOIJ FILED AUG. 19, 1919.

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ED STATES enterar ortica.

THOMAS J. FEGLEY AND GEORGE O.Y LEOPOLD, 0F PHILADELPHIA, PENNSYLVANIA, ASSIGNORS TO NORTH BROS MFG CO., OF PHILADELPHIA, PENNSYLVANIA, A

CORPORATION OF PENNSYLVANIA.

SHEARS.

Application filed August 19, 1919.

To all whom it may concern.'

Be it known that we, THOMAS J. FnoLuv and GEORGE O. LEOPOLD, citizens of the United States, and residents of Philadelphia, county of Philadelphia, State of Pennsylvania, have invented certain improvements in Shears, of which the following is a specification.

Our invention relates to improvements in shears for cutting comparatively heavy materials and articles diihcult to cut under or dinary conditions.

@ne object of our invention is to provide a shear with a straight blade, which will make a shear cut and which will be powerful enough to cut through comparatively heavy materials.

A further object of the invention is to provide means whereby not only a shear cut will be made, but also a drawing movement will be combined with it so as to hold the article being cut against an abutment.

ln the accompanying drawings:

Figure 1 is a side view Of our improved shears in the elevated position;

Fig. 2 is a plan view;

Fig. 3 is an end view;

Fig. 4f is a sectional view on the line le-4, Fig. 1,

Fig. 5 is a. detached perspective view of the gear wheel; and

Fig. 6 is a side view, showing the blade in its lowest position after cutting through the material.

1 is the base consisting of an angle plate having an integral member 2 to which is attached the lower blade 3 by screws el. The blade rests on a rib 32 projecting from the base so as to relieve the screws from strain. The blade 3 can be adjusted laterally by set screws 5. Projecting at the rear of the base is an overhanging arm 6 having a bearing 7 for the shaft S, which is enlarged, as at 9, to form a comparatively wide bearing surface for the movable portion 10 of the shears. Attached to this movable portion is a straight blade 11. The portion 10 has a slot 1Q, Vand on the lower wall of this slot is rack 13 with which meshes the teeth 14 of a gear wheel 15 having an enlarged flange 16, which forms the outer bearing or guide e@ of the movable portion 10 of the shears. A transverse key 17 passes through the shaft and is adapted to a slot 18 in the gear so that Specification of Letters Patent.

Patented June 8, 1920.

serial no. 318,473.

the gear must turn with the shaft. On the opposite end of the shaft is a handle 19, which may be of any length desired. The hub 2O of this handle is split, as shown, so that it can be clamped to the shaft by a bolt 21. There is also a key 22, which locks the shaft to the hub. In the end of the shaft- S is a' threaded opening in which is adapted a bolt 23. Between this bolt and the hub 2O of the handle is a washer 2t, which holds the hub so as to prevent it from moving longitudinally on the shaft. Between the hub and the bearing is a friction washer 31 of leather, or other suitable material. By this construction, the hub of the handle is rigidly secured to the shaft, as is also the gear wheel 15. rEhe movable portion 10 of the shears is confined between lthe parts 9 and 16 so that it will be held firmly through the cutting operation. At one end of the movable portion 1() of the shears is a slot 26, which terminates in a right-angled portion 27, and j nojecting from the overhanging arm G is a xed pin 28 adapted to the slot. The slot is at such an. angle that as the shaft 8 is turned by the handle, the movable portion of the shears will be forced down from the position shown in YFig. 1 to that shown in Fig. 6, making a shearing, as well as a drawing cut. Consequently, any material placed on the base will be quickly and accurately sheared with comparatively little pressure.

It will be noticed that the teeth 111 of the gear wheel 15 are discontinued for more than one-half the circumference, the balance of the wheel being plain. This fits snugly against the wall 13 of the slot 12 and tends to support the movable portion 10 of the cutter, making a very substantial structure and one that can be easily operated. 29 is an abutment secured by a bolt 30 to the base. This abutment overhangs the edge of the base, extending above the xed plate 3, as shown in Fig. it, so that the work to be cut is placed on the base and against the abutment 29, and the movable portion of the cutter cuts toward the abutment and the work is held rigidly during the cutting operation.

I claim:

1. The combination of a base; an overhanging arm projecting from the base; a shaft; a handle on one end of said shaft; a

gear wheel on the other end of said shaft; a movable portion carrying a cutting blade having an elongated opening in which the gear wheel is mounted, one wall of the opening having teeth meshing with the teeth of the gear wheel; a guide pin on the overhangin arm, the movable portion of the shears having a slot into which the guide pin extends so that on rotating said shaft the movable shear blade is given a downward shearing and drawing action against the base.

2. The combination in shears; of a base having an arm; an adjustable blade mounted on the base; a shaft mounted in the arm; means for rotating the shaft; a wheel having teeth on a portion of its periphery and having a disk; a movable portion of the shears mounted on a gear wheel between the disk and the bearing; a cutting blade carried by the movable portion of the shears; and means for guiding one end of the movable portion so that on the rotation of the shaft it will Vhave a shearing and drawing movement.

3. The combination in a shears, of a base; a blade thereon; means for adjusting said blade; an abutment on the base; an overhanging arm projecting from the base and having a bearing; a shaft mounted in the bearing; a handle secured to one end of the shaft; a gear wheel mounted on the other end of the shaft and having teeth on a portion of its circumference, the movable portion of the shears having a slot in which the gear is mounted; rack teeth on one wall of the slot with which the teeth of the gear engage; a flan'e on the gear, the movable portion of the sliears being mounted between the flange and the arm and having a slot with an angular extension; a pin on the arm eX- tcnding into the slot; a blade carried by the movable portion of the shears, the parts being so arranged that when the handle is turned the shears have a downward shearing and drawing action against the fixed blade of the base and the abutment.

et. The combination of a base having an arm; an adjustable cuttting blade mounted 0n the base; a bearing on the arm; a shaft mounted in the bearing; a handle secured to one end of the'shaft; a gear wheel secured to the other end of the shaft and having a ange; teeth on a portionof the gear wheel; a movable portion of the shears mounted between the flange and the arm and having an elongated opening in which the gear wheel is mounted, the teeth on the lower wall of the opening meshing with the teeth of the gear wheel; an angular slot in the movable portion of the shears at the rear of the elongated opening; a pin projectingjfrom the arm and extending into the slot, the pin being so arranged that when the movable portion of the shears is raised the pin is in the angular portion of the slot and when the shear is depressed the pin is in the main portion of the slot, the blade of the shears extending at an angle past the blade of the base.

5. The combination in a shears, of a base; an abutment on the base; an adjustable blade secured to the side of the base; an overhanging arm having a bearing; a transverse shaft mounted in the bearing; ahandle on one end of the shaft, the bearing having a cylindrical enlargement; a gear wheel secured to the shaft and having an enlarged flange corresponding to the enlargement on the arm; teeth on a portion of the gear Wheel, the movable portion of the shears having an elongated opening in which the gear wheel is mounted, said portion being located between the enlargement of the bearing and the flange of the gear wheel; teeth on the lower wall or the opening, the upper wall being plain, the extension of the movable portion having an angular slot therein; a pin on the arm eX- tending into the slot, said portion having a cutting blade; and a friction washer mounted between the handle and the bearing; and an adjustable screw adapted to an opening in the shaft and bearing against the hub of the handle.

THOMAS J. FEGLEY. GEORGE O. LEOPOLD.

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