US1576352A - Hook - Google Patents

Description

March 9 1926. 1,576,352

P. A. NORDLING HOOK Filed March 21, 1925 nwawron JeZer JlJ/or Patented Mar. 9, 1926.

ximrrsn STATES PETER- AUGUST NOBDLING, 0F GOTTENBORG, SWEDEN.

HOOK.

Application filed March 21, 1925. Serial No. 17,394.

To all whom it may concern Be it .known that I, PETER A GUs'r Nonn- LING, a subject of the King of Sweden, residing at Gottenborg, Sweden, have invented certain new and useful Improve ments 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 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 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 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 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 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 closurearm is actuated upon by a spring adapted to 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 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 deficient catch would likely not be 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 illustrated 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 j the hook in open position.

In the drawing, 1 denotes thebody part of the hook having at one end the loop 5 and at the other end the mouth t which is cl osable *by the arm 2 pivoted to the part 1 by the pin 3. :The end of the arm 2 that is carried by the pin 3 is fitted in a recess '6 in the part 1 and is actuated upon a spring 7 tending to movethe arm into open position as shown by Figure 8. In the recess 6 there is arranged a catch 9 pivotally carried 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 ofiset 10 on the end of the arm 2 the catch 9 holds the arm 2 in closed 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 ofiset 10 the arm 2 is swung 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 ollset 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.

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 difliculty.

What I claim is 1. A snap hook including a body part provided with a recess and having an eye at one end and a hook at the other end, a spring pressed lever pivoted in the recess and adapted to close the hook but normally tending to open outwardly, an oiiset, on the inner end of the lever, a spring pressed pivoted catch arranged entirely within the recess and normally engaged with the offset on the lever but adapted to be manually lifted from engagement therewith to permit of opening of the lever and the outer end of the catch bearing against the inner end of the bolt when the latter is released to also assist in the maintenance of the lever in open position, substantially as and for the purposes set forth.

2. A snap hook including in combination, a body part having a recess, an eye provided at one end thereof, a hook formed with the opposite end thereof, a doublearmed lever pivoted to said body part including a short arm arranged'within the recess anda long arm adapted to close said hook and to open outwardly, the short arm being engageable with one end of the recess to limit the outward swinging of the lever, a pivotal catch transversely disposed in said recess, an offset on the end of the short -arm of said lever, an ofiset on the catch adapted to co-operate With the offset on the short arm so as to hold the lever in closed position, the catch being so arranged that no portion thereof projects from the recess beyond the profile of said body part, one end of the catch being accessible to the operators finger at one side of the body part to permit of said catchlifted away from the lever, a spring provided to hold the catch into engagement with the lever, and a separate spring acting upon the long arm of the lever for moving the ley er into open position when released from the catch, sub stantially as herein described.

In Witness whereof I have hereunto set my hand.

PETER AUGUST, NORDLING.

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