US 3477756 A
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Nov. 1l, 1969 BIO INVENTOR FERNANDO J. CASTRO BY www ATTORNEYS United States Patent O U.S. Cl. 294-16 2 Claims ABSTRACT F THE DISCLOSURE A shield for protecting the hand while cutting cane or the like with a swing instrument such as machete, having a rigid part protecting and covering the back of the hand and the thumb, the tip end of which curves inwardly toward the palm of the hand to surround a cane stalk. Within this protective part there is a transverse bar which is grasped by the hand to hold and support the shield, and forwardly of this there is a transverse lever bar which is grasped by the ngers and operated to push a bar forwardly toward the inwardly turned end part so that the stalk being cut may `be held between the bar and the inwardly turned part to hold it in position while being cut.
DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of the protective device provided by the invention,
FIG. 2 is a bottom view thereof showing the position of a stalk which is being held in the protective device while being cut, and
FIG. 3 is a sectional view taken on line 3-3 of FIG. 2.
DESCRIPTION OF THE INVENTION In cutting stalk crops with a swing instrument such as a machete the stalk is usually held with one hand while it is being cut `with the swing instrument held by the other. As the worker must continue the repetitive cutting operation hour after hour, and often becomes careless or inattentive, it is desirable to provide some means for protecting the hand which holds the stalk in order to prevent it from being cut by the swinging sharp blade of the cutting tool. This invention provides a new and useful device for providing protection to the hand and also providing a mechanical means for holding the stalk while it is being cut, thus essentially removing the human hand from the holding part of the operation, thereby reducing to an absolute minimum the possibility of cutting the stalk holding hand.
The protective and holding device provided by the invention is illustrated in perspective in FIG. l of the drawings and in `bottom plan and section in the other figure, and comprises a shield formed of metal or other material which will resist and deect any blow by the swinging cutting tool. The protective device is U-shaped in cross-section having side walls 2, 4 connected by a back wall member 6 and is of such length that it extends forwardly ibeyond the fingertips and rearwardly sufficiently to cover the back of the forearm. The side walls are relatively shallow with respect to the lateral extent of the back wall, but the U-shaped device is sufiiciently deep that when it is in position the side walls provide full protection to the thickness of the hand and forearm. When in operative position the inside wall of the back member 6 engages and covers the back of the hand and the forearm, while the side walls cover the thickness of the hand and forearm.
At its forward end, outwardly of the finger tips of the hand which holds the protective device the `back wall 6 of the protective device is turned inwardly, i.e. toward the palm of the hand, and is centrally bifurcated to form two inwardly curved parts 8, 10 which are separated by a central opening 12. These parts are positioned outwardly of the end edges 14, 16 of the side walls 2, 4 to provide a space therebetween within a stalk is positioned while being cut, as will be described. The outer surface of the back member 6 is reinforced by longitudinally extending ribs 18, 2t]l which are spaced apart laterally of the back member and extend longitudinally thereof from a point adjacent the rear end of the protective device along and over the outer surfaces of the curved holding members 8, lll. Like the entire protective device, these ribs may be formed of metal or other material which will resist and deflect a -blow of the cutting instrument.
In order to provide additional protection to the thumb the side wall 2 has connected to it a plate 22 which is formed of metal or other protective material and which extends outwardly from the side wall 2 in the same general plane as the side wall and adjacent the forward edge 14 thereof, with its forward edge 24 aligned with the forward edge 14 of the side wall 2.
Means are provided by the invention Iby which the protective device may be held in place on the hand and forearm during the cutting operation, and such means comprise a bar or rod 30 which extends transversely of the protective device within the same and between the side walls 2, 4 more adjacent the rear end of the protective device than the forward end thereof. When the device is used the `bar 30 will be grasped by the left hand, thus holding it in position covering the back of the hand and the fingers, with the auxiliary plate 22 providing additional protection to the thumb.
Means are provided by the invention for holding a stalk A within the forward part of the protective device so that the stalk need not be held by the hand, thus reducing to an absolute minimum the possibility of cutting the holding hand. Such means comprise, first, an abutment member 31, having a downwardly extending plate 31a, which extends transversely of the protective device and within it and which is mounted at its opposite ends on the forward ends of two rods 32, 34 which are positioned, respectively, adjacent the inner surfaces of the two side walls 2, 4 at the forward ends thereof. These rods are mounted for sliding movement. longitudinally of the protective device and toward and] away from the inturned fingers 8, 10 and are held in this sliding relation to the side walls by straps 36, 238 which are respectively attached in spaced relation to the inner surfaces of the side walls. The rear ends of the rods 32, 34 are connected, respectively, to the upper ends of two levers 40, 42 which are pivoted, respectively, adjacent their midpoints to the side walls 2, 4 at 44, 46. The lower ends of these levers are connected by a rod 48 which extends transversely of the protective device adjacent and forwardly of the transverse gripping bar 30. The movable abutment member is normally held in retracted position away from the inturned lingers 8, 10 by an extension spring 50 which is connected at its one end to the abutment member and at its other end to the back lmember 5 of the protective device at 52.
When the protective and stalk holding device provided by the invention is to be used, the worker grasps the transverse rbar 30 with one hand and the cutting tool with the other. When he so grasps the protective device the back `6 thereof extends over and covers the back of the hand and the forearm with the side walls 2, 4 above and below the sides of the hand and wrist and the auxiliary plate 22 covering and providing additional protection to the thumb. In this position the inwardly curved members 8, 10 are positioned considerably forwardly of the hand. The worker now positions these inwardly curved lingers in partially surrounding relation to the stalk A, as shown in FIGS. 2 and 3, and the worker now grasps with his fingers the lever bar 48 and pulls it toward the grasping bar 30. This operates the levers 40, 42, moving the transverse member 31 toward the inwardly turned lingers 8, 10 and into engagement with the stalk A. The stalk is thereby held between the movable transverse member 31 and the inwardly turned lingers 8, 1()` and is therefore not held by the hand in any way, thus preventing the hand from being cut. If the machete or other cutting tool should miss the stalk or otherwise be directed toward the holding hand it will strike the protective device, thus fully protecting the holding hand.
1. A device for protecting the hand while manually cutting a stalk with an instrument held by the other hand, the protective device comprising an elongated rigid member which is U-shaped in cross-section having a back portion and side members which respectively cover the back and sides of the hand, a holding bar extending between the side walls to be grasped by the hand to hold the device in position when it is used, the forward end of the back member extending beyond the transverse holding bar and 4being inwardly curved to provide a part for engaging the stalk which is to be cut, and manually operable means within the device movable toward and away from the inwardly extending curved part to engage and hold a stalk held by the curved part.
2. A protective device according to claim 1, in which the means to engage and hold the stalk comprises an abutment member mounted within the protective device for movement toward and away from the protective device, the abutment member being connected to the ends of levers pivoted to the side walls of the protective device, an'operating bar positioned within the protective device between the holding bar and the abutment member and mounted on the ends of said levers remote from the ends to which the abutment member is connected, and a spring normally urging the abutment member away from the inwardly curved part of the back member, whereby movement of the operating bar toward the holding bar moves the abutment member against the force of the spring toward the inwardly curved part and into engagement with a stalk held thereby.
References Cited UNITED STATES PATENTS 856,635 6/1907 Hazzard 294-131 X FOREIGN PATENTS 19,282 8/1882 Germany.
GERALD M. FORLENZA, Primary Examiner G. F. ABRAHAM, Assistant Examiner U.S. C1. X.R. 294-25, 131