US Patent: 2,398,209
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| Hand Tool
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Patentee:
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| Fred J. Clemens (exact or similar names) - Hartford, CT |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
Mar. 02, 1944 |
| Granted: |
Apr. 09, 1946 |
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Stan Schulz
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Description: |
| Rockwell & Barchlow - patent attorneys
This invention relates to hand tools, and more particularly to a tool of the plier type. In the use of pliers and similar tools it is often desirable to provide a strong leverage action between the handles and the jaws in order to effect tight closing of the latter. While this is more or less true of any plier in order that it may grip the work tightly, it is particularly true of certain kinds of pliers, and of wire- or rod-cutting pliers, for example. Also, it is desirable in connection with certain forms of pliers to be able to lock the jaws in closed position in gripping contact with the work. This is desirable, for example, when the pliers are used as a wrench, where they may be locked in gripping position on a nut, and it is also true wherein they are to be used in connection with a rod or pipe, for example, so that they may be locked in gripping relation with a piece of work circular in cross section. It is also desirable that this locking together of the jaws of the pliers may be accomplished in a simple and effective way, with no further manual operation than that required to close the jaws of the pliers upon the work or object between them, and it is also desirable that the pliers may be readily opened from their locked position merely by a separation of the plier handles. A further advantageous feature in hand tools of the present character is that of adjustability of the jaws, so that the closed position thereof may be adjusted to fit and lock upon work which may vary in size, and to arrange the parts of the tool so that this adjustment may be readily and easily made, and be capable of adjustment through a relatively wide range. One object of the invention is to provide a hand tool of the plier type, of novel form and construction. A further object of the invention is to provide a hand tool having working or gripping jaws which may be locked in closed position upon the work by a movement of the handles in a direction to close the same. Still another object of the invention is to provide a hand tool such as pliers or the like which will have a relatively high leverage to effect the closing of the jaws, and the jaws of which may be readily and easily locked in closed position or opened from said locked or closed position. A still further object of the invention is to provide a hand tool of the plier type, having jaws and cooperating handles to effect opening and closing movement of the jaws, the connections between the jaws themselves and between the jaws and handles being of novel form and construction, so that the jaws when closed will be automatically locked in closed position. A still further object of the invention is to provide a hand tool of the type described having means for effecting adjustment of the closed position of the jaws.
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