DE14852C - Innovation in apparatus for electrical lighting - Google Patents

Description

IMPERIAL

PATENT OFFICE.

PATENT LETTERING

CLASS 21: Electrical apparatus.

Patented in the German Empire on November 23, 1880.

In the drawing, Fig. 1 is a side view of a device constructed in accordance with the present invention Lamp; Fig. 2 is a vertical section through the same, placed approximately through its center. Figures 3, 4, 5 and 6 are detailed views.

A is a box made of wood or other non-conductive material that contains the mechanism for regulating the feeding of the coal tips. B is a bell jar surrounding the focal point. C is a thin, flat metal rod that supports the bell. It is arranged so that it moves freely up and down in notches provided in the arms α α attached to the box A and is in the desired position by means of the lock c, which engages the teeth attached to its edge held.

D is the top charcoal stick holder and E is the bottom. The construction of the clamp holding the lower carbon is shown in FIG. Its two sides dd ¹ consist of separate pieces and are held together by screw b ; at one end they encompass the head of a horizontal bolt g attached to the lower charcoal stick holder, and at the other they have two semicircular jaws e of suitable size to hold the lower end of the charcoal. Coal and clamp 'can be placed anywhere and fixed by turning screw b. F is a rod attached to box A, immovable. G is a flat bar that supports the lower carbon holder. H is a joint fastened to the rod F and also to the rod G with tenons. The shape of the joint can be seen from FIGS. 3 and 4. /, Fig. 2, is a flexible, flat metal strip which is attached at one end to the box A and at the other to the rod G. J is a lever attached by means of a pin at / * to the box A and at j through the connecting rod k to the rod G. L is a solenoid connected to the circuit of the lamp and M is its core. The upper end of the core passes through the head of an inverted cylindrical box q and is firmly attached to it. This box q is adapted to the upper part of the solenoid and acts as a friction box or control chamber to prevent sudden movements of the regulating mechanism. The end of the lever J engages in a notch k in the side of the core M. N is a set screw for restricting the downward movement of the core M. O is a gear train which engages the rack P on the side of the upper coal tip holder and prevents the downward movement of the the latter controls. A pawl pt on the armature lever J is mounted so that it comes into contact with a gear on the fastest rotating shaft of the transmission when the lever is depressed. Q is a rod that goes through the lower coal holder and is suspended from the box A by means of the spring R. 5 is an adjusting nut for regulating the tension of the spring R. T is a rod attached to the rod G by means of the consoles ti ¹ , which can move freely in the longitudinal direction in the latter. V is a spiral spring attached to the rod T , which is supported against the console t ^l . The rod T has a shoulder x which is placed against the

Claims (6)

Box A rests when the rod T is thrown upwards by the spring V. The lower end of the rod T passes through the lower coal holder and ends in a forked button W which is arranged to be placed on the coal holder as shown in FIG lower surface of the latter can be found. When it is brought into the former position, the shoulder χ rests against the lower side of the box A, while in the second case it is pulled away from the box A. The lamp is suspended by means of the tubular support Y, which surrounds the upper carbon holder, and the current is passed through a clamping screw, not shown in the drawing, electrically connected to the spring X, after the upper carbon holder, and through the clamping screw Z and spring (elastic metal strip ) / directed to the lower carbon holder. The function of this lamp is as follows: The forked button W is pulled down and turned around until its legs rest on the lower surface of the coal holder E, whereupon the spring R pulls the rod G 'and the lever J upwards until the pawl m is lifted out of the locking wheel of the gearbox O. The upper charcoal holder goes down by its own gravity until the tips of the charcoal come into contact with one another, whereupon the circuit is closed. The current energizes the solenoid L and pulls its core M downwards, at the same time pushing down the lower carbon and stopping the decline of the upper carbon. When the arc becomes long, the current in the solenoid L becomes too weak to handle the tension in the spring R and the lower carbon is gradually raised and the pawl m released until equilibrium is re-established. The length of the arc can be regulated by adjusting the tension of the spring R, and the lamp can be extinguished at any moment by turning the knob W until it rests on E, whereupon the spring V, which thereby forms a support point on the box A, is attached the shoulder χ has overpowered the tension of R and holds down the lower coal. It can be seen that the gravity of the upper or positive carbon has no influence on the functioning of the regulating device, which is an essential advantage, since the negative electrode is only consumed half as quickly as the positive one. Where the spring has to support the upper carbon in order to regulate the length of the arc, as in the case of lamps of the ordinary form, it is often necessary to readjust its tension during the burning of a pencil of considerable length, because of the loss of weight, but this inconvenience is greatly mitigated by attaching the adjustment device to the negative carbon. At the same time, the arrangement described above affords the advantage of having the regulating mechanism above the focus, where it is not in the way of the light. The hinge H fastened with pegs and the elastic strip / keep the rod G in its position in the horizontal direction free of friction-causing contact with all other parts of the lamp, so that the regulator is very sensitive to changes in the current and slight adjustment. All the supports, both for the lower charcoal holder and for the "bell", are placed on the same side of the focus and attached to each other in one direction, and as they are flat with sharp edges directed towards the focus, they only throw very little shadow, and even that only on one point. The bell B can be lowered lower by raising the barrier c without disturbing the other parts of the lamp. 1. The construction described of an electric lamp with a holder that extends downwards for the upper coal and a series of gears to control its descent, in combination with a solenoid and armature lever, which is specified in Way acts on a pawl that engages the above gear, and one Holder for the lower coal, which is suspended from the lever mentioned. 2. The one described in this lamp, in action by means of a solenoid through the current mechanism for advancing the coal tips and regulating their distance from one another. 3. The described device of the solenoid and its armature, in particular the downward-facing cyliridric bell q attached to the iron core, for the stated purpose. 4. The device that the supports of both carbon rods and the bell are made of thin, There are flat rails, all of which, edge to edge, are in one plane with the carbon rods and on the same side of the latter. 5 The carbon holder E in combination with the rod G, the joint H and the resilient strip / 6. The carbon holder E in combination with the adjustment spring R, the spring V, the rod T and the forked head W. The side pieces dd ¹ in combination with the screw b, the bolt g and the jaws e. The combination of the bell B with the carrier C and the lock c. For this purpose ι sheet of drawings.