Hook

Application filed March. 21

To all whom it may concern:

Be it known that I, Peter August Nordling, a subject of the King of .Sweden, residing at Gottenborg, Sweden, have in5 vented certain new and useful Improvements in Hooks; and I do hereby declare that the following is a full, clear, concise, and exact description of the invention, such as will enable others skilled in the art to !0 which it appertains to make and use the same.

The present invention relates to hooks of the type comprising a body part formed with a mouth which is closable by an arm. 15 pivoted to said body part and opening outwardly. '

In hooks of this type there has been previously proposed to provide a catch for locking the arm in closed position, a spring ²<> being arranged to move the arm into open position when the catch is disengaged from the arm. In these prior hooks, however, the catch is projecting out from the body part of the hook and, therefore, it is liable ²⁵ to be accidentally disengaged from the arm when the hook comes into contact with other objects.

In accordance with the present invention the catch is fitted in a recess in the body ³⁰ part of the hook in such, a manner that no portion of the catch projects out from the recess past the profile of the hook, and, in combination therewith, the closure-arm. is actuated upon by a spring adapted to ³⁵ move the arm into open position when the arm is released from the catch.

By this combination the advantage is attained that, if the catch by some fault or by the presence of a foreign body, for ⁴⁰ instance dirt or the like, between the coacting surfaces of the catch and the arm does not come into engagement with the arm, the latter opens itself automatically. If the spring were not present such a de⁴⁵ ficient catch would likely not he observed since the catch is concealed m _ the recess. This fact is of importance, for instance, as regards tethering of animals.

An embodiment of the invention is illus⁶⁽¹ trated in the accompanying drawing in which Figure 1 shows the hook partially in section in closed position. Figure 2 shows the hook seen in the direction of the arrow in Figure 1 and Figure 3 is a view of ⁵⁰ the hook in open position.

, 1925. Serial No. 17,394.

In the drawing, 1 denotes the. body part of the hook having at one end. the loop 5 and at the other end the mouth 4 which, is closable by the arm 2 pivoted :to the part 1 by the pin 3. The end of the arm 2 that ³⁰is carried by the pin 3 is fitted in a recess 6 in thejpart 1 and is actuated upon .by a spring 7 tending to move the arm into open position as shown by Figure 3. In the recess 6 there is arranged a catch 9 pivotally ³⁵carried by a pin 8 and actuated upon by a spring 11 tending to force the catch against the adjacent end cf the arm 2. By engagement with an offset 10 o n the end of the arm 2 the catch 9 holds the arm 2 in ⁷⁰closed position. As evidently . shown by Figures 1 and 3, the catch 9 has such a shape and size that no portion thereof projects out from the recess past the profile of the hook. As shown at 13, the edges of the recess 6 are bevelled in order that the operator may reach the catch more easily with his finger.

As soon as the catch is raised from engagement with the offset 10 the arm 2 is ⁸swung outwardly by the spring 7 and the hook is open. When the hook is to be closed the arm 2 is moved towards the mouth 4 whereby the catch 9 will automatically engage with the offset 10 and secure the arm in closed position. If the catch has got out of order or if it by any other reason does not come into engagement with the offset 10 the arm 2, when released, will be moved into open position. ⁹⁰

By the above description it will be understood that the opening and closing of the hook is carried out by simple grasps so that it can be used by everyone without any difficulty. ^0y