DE1160596B - Pawl for load hook - Google Patents

Description

FEDERAL REPUBLIC OF GERMANY

GERMAN

PATENT OFFICE

DESIGN SCREEN

Boarding school Class: B 66 c

German class: 35 b -6/01

Number: 1160 596

File number: G 32339 XI / 35 b

Filing date: May 25, 1961

Opened on: January 2, 1964

The invention relates to an outwardly opening pawl for closing the hook mouth opening of load hooks with the locking mechanism housed in the pawl in the form a spring-loaded rocker arm or rocker body, which is only in one position between can unlock two end positions of the pawl.

The well-known pawl hooks (snap hooks), in which the pawl opens inwards, have the disadvantage that the already limited mouth width of the hooks when the pawl is open the thickness of the pawl is reduced, making the hanging and unhooking of chains and pages strong can be hindered.

Outwardly opening pawls do not have this disadvantage, but must be in the closed state be locked separately. In known designs, this is done by an additional one, usually from the outside accessible lock. The disadvantage of an externally accessible lock is that by carelessness Fiddling with the hook the pawl can be unlocked and the operational safety this is very much called into question.

The disadvantages mentioned are in an outwardly opening pawl for load hook with in the locking pawl housed locking mechanism in the form of a spring-loaded Rocker arm or rocker body according to the invention avoided in that the rocker arm two Having legs, wherein in the closed state the front leg of the rocker arm on the hook nose, the rear leg of the rocker arm strikes the pawl and thus an opening of the pawl outwardly prevented.

The drawing illustrates an embodiment of a pawl according to the invention.

Fig. 1 shows a load hook with a pawl according to the invention in the normally closed position;

F i g. 2 shows the same hook with pawl in the inner stop position;

3 shows the same hook with a pawl in the middle position with the rocker arm pivoted by about 75 °;

Fig. 4 shows the same hook with pawl in the normally open position;

F i g. 5 shows the pawl alone in the same position as a pawl for load hooks

Applicant:

Greifzug company for hoist construction with
limited liability, Bergisch Gladbach,
Buchholzstrasse 40-46 '

Named as inventor:
Rudolf Tanson, Luxembourg

Claimed priority:

Luxembourg of June 16, 1960 (No. 38 835)

F i g. 6 shows the side view of FIG. 5; In Figs. 1, 2, 3, 4 and 6, the springs are omitted for the sake of clarity.

In Figs. 1 to 5, the pawl is shown in section. A load hook provided with a hook neck 2 and hook nose 5 has a pawl 1 which is pivotably mounted on the hook neck 2 by means of an axis 3 and with extensions 4 in the closed position (FIG. 1) engages on both sides over the hook nose 5, whereby a lateral Slipping of the pawl 1 from the hook nose 5 is reliably avoided. A leg spring 11, which is mounted in a recess 6 on the hook neck 2, tries to keep the pawl 1 open. A rocker arm 8, which has two legs, is mounted in the pawl 1 along with an axis 7. The rear leg 9 of the rocker arm 8 is designed as a stop which strikes the pawl 1 to limit the pivoting movement of the rocker arm 8. A spring 10 keeps the rocker arm 8 constantly in this stop position. The front leg of the rocker arm engages behind the hook nose 5 and thus prevents the pawl 1 from opening to the outside (FIGS. 1 and 5). If the pawl is pushed outwards, the rocker arm 8 rests firmly against the hook nose 5 and with the stop on the rear leg 9 against the pawl 1, so that the pawl 1 cannot open. If the pawl 1 is pushed inwards, the stop on the rear leg 9 of the tilting lever 8 is clamped between the pawl 1 and the hook neck 2 (Fig. 2), and pivoting of the tilting lever 8 and thus unlocking of the pawl 1 is excluded . If the pawl 1 is to be opened, it must be brought into a central position between the two end positions (FIGS. 1 and 2). In this position, the rocker arm 8 can now counter the pressure of the spring 10 by about

309 777/99

75 ° can be pivoted (Fig. 4), with which the pawl 1 is unlocked and can pivot freely (Fig. 4). For better handling, the stop on the rear leg 9 of the rocker arm 8 is on both Sides extended beyond the edge of the pawl.

Claims (3)

Patent claims: 1. Outwardly opening pawl to close the hook opening of load hooks with the locking mechanism housed in the pawl in the form of a lower The rocker arm or rocker body standing under spring pressure, characterized in that the rocker arm (8) has two legs, the front leg in the closed state of the rocker arm (8) on the hook nose (5), the rear leg (9) of the rocker arm (8) on the The pawl (1) strikes and thus prevents the pawl (1) from opening to the outside. 2. pawl according to claim 1, characterized in that the rear leg (9) of the The rocker arm (8) is extended so far that when there is pressure from the outside on the pawl (1) on the The hook neck (2) and thus prevents the pawl (1) from opening inwards. 3. pawl according to claims 1 and 2, characterized in that the rear leg (9) of the rocker arm (8) is widened beyond the width of the pawl (1), which is a better handle when pivoting the rocker arm (8) to unlock the pawl (1) offers. Considered publications:
French patents No. 1 100 137,
711 For this purpose, 1 sheet of drawings 309 777/99 12.63 © Bundesdruckerei Berlin