DE413530C - Closure and closure device for electric detonators - Google Patents

Description

GERMAN EMPIRE

ISSUE ON Π. MAY 1925

REICH PATENT OFFICE

PATENT LETTERING

-JKi 413530 - CLASS 78 e GROUP 2

(E 29358 W {78 e)

Establishments Davey, Bickford, Smith & Co. in Rouen, France.

Closure and closure device for electric detonators.

Patented in the German Empire on April 29, 1923.

According to the Union Treaty of June 2, 1911, priority is due to this application of the application in France of January 17, 1923.

Up to now, the closure of electrical detonators has usually been carried out by means of a Drops of collodion, which was applied to the top of the capsule and after drying a thin one

Skin formed on the surface of the bang in the capsule.

Detonators have also become known that are used to secure the cargo against moisture a massive celluloid

disc was placed or pressed on. According to the invention, the closure such capsules by means of round discs, the diameter of which is greater than the Sleeve diameter is made of celluloid, paper or the like. Cut out and put in the top Part of the capsule in which the detonator is located.

The edge of the pressed-in disc, ίο which is on the inner wall of the The sleeve bends over and is glued here. Cutting out the locking washers, their introduction into the capsules and their gluing on the inner surface of the capsule take place in several successive acts, but it can also can be effected in a single operation, and not just with a single operation Sealing disc, but also with several at the same time.

In the following, such a device has been described as an exemplary embodiment. The device essentially consists of a support plate for the detonator, on which an underlay die rests. An introductory die rests on this die and above this the cutting die, which is with its axis in the extension of those of the other dies. The ones provided in the matrices The number of openings corresponds to the number of capsules to be closed. From above is into the upper one. Die a punch consisting of two concentrically nested parts inserted, one part of which the cutting punch for the closure disc and the other part the insertion punch for the Disc forms. Both punches are inserted into the upper cutting die at the same time. Then the middle punch or the insertion punch is alone in the lower insertion die and in the sleeve the capsule is driven in, which can take place in a single operation, by cutting out the sealing disc from the strip of material made of celluloid or the like and inserted into the detonator to lock it. Before inserting the pane, a gluing device can be connected to the device described above, around the inner wall of the insertion die | to apply a layer of glue so that; the locking washer at its insertion, - | the sleeve is glued to the latter so that: it is then in a firm, indissoluble connection with it.

In the drawing, a device has come to the I representation, with which several> Sealing washer cut out at the same time; th, inserted into the sleeves and in these can be glued.

Fig. Ι is a side view of the device in part in Schmitt, with the parts are in a position which they assume before cutting out the sealing disc.

Fig. 2 is the same view as Fig. 1 after the closure disk has been cut out.

FIG. 3 is a further view after the closure disc has been inserted in FIG the detonator.

. Figs. 4 and 5 show the gluing device in its position before and after gluing. - The capsules 4 are in recesses 1! a base body 2 used, which in a base plate 3 is arranged displaceably. The head of the capsule is in place : here below and is connected to a power source by lead wires 5. At the inside the capsule is the usual spark; route through which the in the capsule Pop phrase can be made to ignite.

; Above the support body 2 is the underlay die 8 arranged. This has an insertion opening 9, which is below in a recess 11, the sleeve 4 'of the capsule 4' comprises. The cutting die rests on the die 8 10, whose axis coincides with the axis of the opening 9 in the die 8 and the recess 1 in the base 2 coincides. A suitable device can be used be provided (not shown; in order to be able to move the support body 2 as desired.

Two rulers 12 are placed on the upper die or the cutting die, between which the strip made of celluloid, cardboard or the like leads, from which the locking washers are to be cut out.

The slices are cut out by means of a stamping device consisting of a hollow outer part, the cutting punch 14, and a displaceable in the same inner part, the insertion punch 15, there is. These stamps are in no Axis direction with the perforations of the die and can by any suitable Device (not shown) are driven.

The operation of the device is as follows:

After the Miatrize 8 is placed on the base 2 containing the capsule and the celluloid strip 13 is inserted between the guide rulers 12, the Stamp 14, 15 in the interior of the cutting die 10 driven in, with round disc

chen 16 cut out of the celluloid strip will. It is then the insertion punch 15 is moved further down to the cut disks 16 into the insertion die 9 and then in to drive in the capsule shell 4 '. The conclusion the sleeve is thus completed.

In order to achieve that the closure disks 16 on the inner surface of the capsule shell 4 'permanently remain solid, the inner surface of the insertion die 9 will be covered with a layer of glue provided in order to prevent the protruding or to provide the bent edge 16 'of the disc with glue. After that then the introduction of the closure disc into the capsule 4 'is effected, it is located after the glue has dried, it is permanently attached to the capsule.

The gluing device can be seen in Figs. 4 and 5.

In these figures 17 is a swivel arm, which is rotatably mounted at 18 and carries a glue brush 19 at its upper end.

When the arm 17 is in the position shown in Fig Position is pivoted downwards, the brush 19 is immersed in a glue bath 20 of a container 21. If, on the other hand, arm 17 is in its upwardly pivoted position (Fig. 4), the brush 19 with the opening 9 of the die part 8 come into contact. Before the support or restraint device 2, 3 of the capsule to the Cutting machine is brought up, the swivel arm 17 is shown in Fig. 4 Position approximated, whereupon the die part 8 moves downwards against the brush 19 is, the inner surface of the extension

trize 8 receives a layer of glue.

The die part 8 is then raised, the arm 17 in its lower position (Fig. 5) and the base 2, 3 carrying the capsule into the working position brought so that the cutting out of the sealing washer from the strip of material Γ3 and the introduction of the same into the capsule with simultaneous gluing of the Slices on the inner surface of the capsule can be made.

The device can be set up so that any number of Detonators with closures in the front

9 the breakthrough of the Mageschritten type and width can be provided can.

Claims (3)

Patent-to sayings: 1. Closure for electric detonators, e.g. B. using celluloid, characterized by disks (16 ') of larger diameter than that the sleeve, cut from a celluloid, paper or other strip, inserted into the upper part of the tubular sleeve of the detonator (4) and with its protruding or bent over Edges are glued to the inner wall surface of the capsule shell. 2. Device for the introduction of the closure disks according to claim 1 in the Detonators, by means of which one or more in a single operation Capsules can be closed at the same time, characterized by an upper cutting die (10) and a lower insertion die (8) existing die body, its perforations are in the same axis with that of the capsule to be closed and one of two parts, namely an outer cutter (14) and an inner insertion punch (15) existing punch body, which is first introduced into the cutting die (10), whereupon the middle punch part (15) into the insertion die (8 j and into the sleeve of the in The capsule sitting on the pad (2) penetrates in order to successively control the output cutting the disks and inserting them into the upper part of the detonator. 3. Device according to claim 2 with means to provide the inner wall surface of the recess (9) of the die (8) with a layer of glue which is transferred to the protruding or bent edge of the slices inserted into the insertion die, characterized by a 10a rotatably mounted arm (17), which at its end carries a glue brush (19) which is immersed in a glue bath and can be brought into contact with the opening Ig) of the insertion die (8). Please refer to the sheet of drawings.