DE243033C - - Google Patents

Description

IMPERIAL

PATENT OFFICE.

PATENT LETTERING

- M 243033 CLASS 21 «. GROUP

HERMANN JANKE in HALBERSTADT.

Device for locking the crank on telephones.

Addendum to patent 235563 of December 22, 1910.

Patented in the German Empire on June 29, 1911 ah. Longest duration: December 21, 1925.

The subject of the invention is the further embodiment of the patent 235563 described device for locking the crank on telephones, which is designed so that it can be used for various telephone systems regardless of The design of the telephone can be used by placing closer and insertion device to each other are adjustable within wide limits.

Such devices are extremely useful in addition to being used on telephones with crank call also for telephones with automatic connection. The device has however, the disadvantage that it cannot be used for long-distance speakers who are designed to be crankless are, in which the call to the office by picking up the receiver from the handset hook. The present invention relates to the device for closing the crank on telephones also for crankless telephones, so that now the Device for telephones of any kind, no matter whether crankless or crank system, can be used.

In the drawing, the locking device is shown for example, namely shows:

Fig. Ι a telephone with a crank lock housing in the closed position in front view, with dotted representation of the locking device and the lock housing in the open position,

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Fig. 2 shows a cross section through the lock housing and the lock device in the open position,,

3 is a front view of a crankless telephone with the lock housing open,

FIG. 4 shows a top view of the device from FIG. 3,

FIG. 5 shows a longitudinal section through the closure device along the section line AB of FIG. 3, while

Figures 6 and 7 show the arrangement of the locking member.

In order to first describe the use of the new locking device on a telephone equipped with a crank, the call crank α of the telephone is covered by a hinged locking housing b , as in the main patent, which can be opened after a coin has been inserted into a money slot c. The lock housing is in the usual way under the action of a spring which tends to swing the housing back from the open position into the closed position. To avoid this, a locking hook d is arranged movably around a pin on the support plate η (FIG. 2) of the lock housing, which is under the action of a spring d ¹ (FIG. 6) which tends to connect a locking hook to the locking hook to hold finger-like arm d ^% in the position shown in Fig. 2, in wel-

Claims (2)

rather, the arm dz rests against the base plate η of the lock housing. As a result, the lock housing b is held in the open position by means of a stop g attached to it, which rests against the locking hook d. Under the arm d2 there is a lever h which is movable about a pivot i and in which a rod k can be displaced in the vertical direction ίο, which in turn can be displaced on a rod k1 in the longitudinal direction. Like the rod k, this rod k1 is connected to a lever m on which it can be displaced and locked in the vertical direction. The lever m is arranged on the left side of the telephone and is movable around a pin /. A cushion rx attached to a rod r can also be adjusted and locked both in the longitudinal direction (FIGS. 1 and 3) and forwards or backwards (FIG. 5) on the rod kl. It is therefore possible to arrange both the closer and the throw-in device at any suitable location, since both the cushion against which the listener β rests can be adjusted and locked in any direction, as can the parts influencing the locking hook d. As has already been mentioned, in the open position of the lock housing this rests against the locking hook d by means of its stop g, so that the cushion r1 assumes the position shown in FIG. If the receiver is now attached to the receiver hook f, the cushion is swung back in the direction of the arrow shown in FIG. 5 and as a result the arm d2 is raised in the direction of the arrow shown in FIG is moved out and thus the lock housing can slam under the action of its spring. The same device can also be used with crankless telephones in which only the lever m needs to be lengthened a little beyond its pivot so that the lever has the same shape as the lever h in telephones with a crank call. In addition, the extension of the rod k1 and the rod k are omitted. The effect is otherwise the same as with the telephone with a crank call. The only thing that changes is the shape of the locking housing b, which is smaller than the housing used for telephones with a crank call, since the former only has to cover the receiver hook f. Patent-A ν Proverbs: 1. Device for locking the • crank on telephones according to patent 235563, characterized in that the locking hook (d) is provided with a finger-like arm (d ² ) which rests resiliently against a two-armed lever (h or m) which either indirectly through a rod connection adjustable in height and length (k, k ¹ ) or directly with a cushion (r ¹ ) that swings backwards when the handset is attached to the handset hook, for the purpose of connecting the locking device to both telephones with a crank call or cordless telephones as well as those with automatic connection. 2. Apparatus according to claim 1, characterized in that the cushion (r ¹ ) on the rod (k ¹ ) can be adjusted and determined accordingly both laterally and forwards or backwards in order to be able to adjust the cushion for the different types of listener can . 1 sheet of drawings.