DE168567C - - Google Patents

Description

, 1

IMPERIAL

PATENT OFFICE.

There are already locking devices for rope relief for electric arc lamps known in which a bead attached to the end of the elevator rope is blocked by balls which are shifted laterally by a solution ring when the lamp is pulled up and after the bead has passed Roll back into the locked position.

The new locking device is different

ίο now differs from the known in that causes the release of the lock by lifting a sleeve encompassing the locking balls which is in the highest position due to the friction between the movable ones and fixed contacts of the contact device connected at the same time to the locking device is being held.

The one shown on the drawing in Figs. Locking device in connection with a contact device consists of a tubular support body A, which is provided with two elongated slots for receiving the locking balls K, the well-known pierced locking bolt B provided with a locking bead with a screwed-on cable lock S for passing through and attaching the elevator rope D and the new, the balls K in the locked position tightly enclosing solution sleeve L. The latter rests in the blocked position on a collar on the support body A. This solution sleeve is shaped inside so that it adjoins the support body A in the middle part L ¹ and in the lowest position the Holds balls, as shown (see Fig. 1), but is provided with recesses L ' ² L ³ above and below the balls. The locking device also carries a contact device, namely the fixed contact tubes RR ^{1 are} insulated attached to the main body A; the movable contact pins FF ¹ , on the other hand, are attached to a cap H by means of the insulation EE ¹ , which surrounds the locking pin B in a slightly rotatable manner and rests on the shoulder M of the cable lock S after the contact device has been released.

The lower end of the support body A of the locking device is provided with a guide slot for the cap H , which ends in a known manner diametrically opposite in a lanceolate arc tip in order to secure the entry of the movable contact pieces into the stationary ones when pulling up the lamp.

In the upper part, the cap H has a centrally arranged ring P with a guide nose N so that the cap is held vertically and can be brought into a certain position relative to the support body A through the nose entering the slot. The entire arrangement is provided with a protective cover O. The upper threaded part on the support body A is used to attach the whole to the arc lamp mast or the like.

The working process of the apparatus Fig. 1 to 3 is now as follows:

In the open position of the locking device, the balls K rest against part L ^{1 of} the solution sleeve, cap H with contact pin FF ^v rests on the approach M of the cable lock S. When the lamp is pulled up, the nose N leads first in a known manner

Claims (1)

Way along the lancet-like arched tip of the support body A into the slot so that the contact pins are inserted into the contact tubes RR ¹ in the correct position, corresponding to the polarity. Only now does the action of the locking device begin: the bead of the locking pin B pushes the balls laterally and upwards into the recesses L ' ^{2 of} the solution sleeve., The locking bead is up ίο raised to a certain height, the balls roll back into the old position and now the bead of the locking pin B can lie on the balls when the rope slackens, whereby the blocking is accomplished. As shown in the drawing, cap H now remains in the assumed position due to the friction between the contact pins and contact tubes. The lock is released by pulling the locking pin up to the stop of the nose N on the cap H against the base of the guide slot. Here, the solution sleeve L is lifted by the cap H, which presses against the approaches X of the solution sleeve, so that the balls when the locking pin is released, because the solution sleeve remains in this highest position due to the friction between the movable and fixed contacts , can lie sideways in the lower recesses L ^{s of} the release sleeve in order to let the locking pin through if the rope continues to slacken. The bead of the locking pin then rests on the ring P and triggers the movable contacts again. Instead of the contact device, for the purpose of holding the solution sleeve in place, another arrangement acting in the same way can be made to the locking device can also be used without a contact device. Fig. 4 shows another arrangement using four fixed contacts. Fatent claim: Locking device for cable relief for electric arc lamps with a locking bead attached to the end of the elevator cable, laterally displaceable through this bead and automatically rolling back into the locked position, characterized in that the locking balls (K) in the slots of the support body (A) attached to the mast to the outside by a sleeve (L) which is at rest on the support body and can be displaced in the vertical direction, which in the rest position with the middle part (L ¹ ) rests tightly on the balls and in the outer ends above and below the balls elongated recesses (L? L ^s ) are provided for receiving the balls, and that this sleeve (L) of one of the movable ones. Contact bolt (FF ¹ ) carrying cap or the like (H) can be raised by means of the cable lock (M) and, because of the friction between the movable and the fixed contact pieces, remains in the raised position until the lamp is lowered when the lamp is lowered walking rope bead, after he has pushed the balls into the lower recesses - (L ^& ) of the movable sleeve and thereby cleared the way down, releases the movable contact pieces from the fixed ones (RR ¹ ) as he descends further. 1 sheet of drawings.