US2822718A

US2822718A - Machine for making cartridge

Info

Publication number: US2822718A
Application number: US289452A
Authority: US
Inventors: Niepmann Friedrich
Original assignee: Individual
Current assignee: Individual
Priority date: 1952-04-28
Filing date: 1952-04-28
Publication date: 1958-02-11
Anticipated expiration: 1975-02-11

Description

Feb. 11, 1958 F. NIEPMANN MACHINE FOR MAKING CARTRIDGE 2 Sheets-Sheet 1 Filed April 28, 1952 lllllllllllllil if Illlllllllllllllllllllllllllllllll Illll' will '1. MIL? IHH Illl HHI III-I Feb. 11, 1958 F. NIEPMANN MACHINE FOR MAKING CARTRIDGE 2 Sheets-Sheet 2 filed April 28, 1952 INVENTOR- alzdfkh jaw 40%,

2,822,718 M'Aciinsza FOR C RTRIDGE Friedrich Niepmann, Gevelsberg, Germany than; April 28,1552, sta r No. 289,452 Claims. (21. 86 -20) The; invention refers to a machine for making cartridge, particularly for packing gelatinous explosives, which are fed by a worm conveyor into receiving chambers on a dial.. a 3

The invention consists in the fact that the filling dial, which is,,pr0vid ed with tubes, is placed directly in front of a; worm conveyor housing which is filled with the explosive, next to which there is a plunger which tamps the explosive into jackets which have been forced over the tubes. and-,which, along with a, counterpoise push rod, deposits the loaded jackets in the cells of a stop along fine III-III the explosive to the mouthpiece 4. The feed screw 3 is driven by shaftS by means of coupling 6. The drive for the whole machine is through V-belt pulley '7, which is located on :mainshaft 8. This,,sha ft has a sprocket wheel. 9 which, by means of a chain 10, drives sprocket whfeell flllo n shaft 5. M, j I,

Directly in front of the mouthpiece 4 oft'he worm conveyor housing l there is. .a filling dial 12 which is driyen by shaft 13. At the endo f shaft therej is. cog wheeL14, which meshes with cog w heel 15 on changesfpeledQshaft 16. On this change-jspeedlshaft J16 there is lagslotjted cross 17, which is given intermittent'rotation by'means of a pin 18 on a driving disk 19. Next to this driving disk 19 there is the customary locking disk 20. Driving disk 19 and locking disk 20 are located on the main shaft 8. As is shown in Fig. 2, slotted cross 17 has four slots, so that one revolution of the main shaft 8 causes change-speed shaft 16 to execute a quarter revolution.

In accordance with Fig. 2, two

filling dials

12 and 21 can advantageously be arranged side by side, with two worm conveyor housings provided for them. The two

filling dials

12 and 21 can be given counterrotation.

Each filling dial is provided with four tubes 22, two of which are alongside each other in one plane at any given time. Each worm conveyor housing has two dischargeorifices for two tubes each, so that two of these tubes are filled simultaneously.

The paper jackets 23 used for loading are already closed on one end and are placed on a tray 24 (Fig. 2) so arranged that there is a trough 25 in front of each tube, into which one jacket falls. The jackets 23 lie in the trough 25 in such a way that the closed end of the jacket is toward the left, as in Fig. 1. At the level of the 2 upper tubes 22 there arepush rods 26 which slide, by means of carriages 27, on tracks 28. When the jackets 23fall into the troughs 25, these push rods 26 are at their left hand end position. The push rods .26 thenat intervals shove the open end of a jacket 23 over. oneof the upper tubes 22. During this movement of the jackets,

. the coupling 6 for the two feed screws 3 is engaged. These feed screws then begin to convey the explosive 2 from the conveyor housing 1 intothe four upper tubes of the

filling dials

12 and 21. p

The movement of the push rods 26 is transmittedby' a rod 29 which is actuated by a rocker 30. This rocker pivots around a pin 31 and is joined to a lever32, whose roller 33 is governed by a cam 34. This cam is located on a shaft 35 which is driven, by means of two

sprocket wheels

36 and 37 and two bevel gears 38 and 39, by an intermediate shaft 40. On this shaft 40 is a sprocket wheel 41 which meshes with a sprocket wheel 42 on the main shaft 8. One revolution .of shaft 35 therefore producesa back-and-forth movement of push rod 26.. A draw spring 43 is attached to rocker 30 so that roller 33 is always in contact with the cam.

Shortly after the jackets23 have been pushed completely onto the tubes 22, the frontal area of the explosive, which has been forced through the tubes 22, reaches the already folded bottom of the jackets. Then, as a result of the pressure which the explosive exerts on the bottom of the jacket, the loaded jacket begins to move to the left and forces the push rod 26 back. The position of the jacket at the beginning of this movement is shown in Fig. 3. After moving distance s in Fig. 3, the coupling 6 for the worm drive is disengaged, which stops the feeding of the explosive. This disengagement occurs in the following manner:

The rocker 30 for the push rod 26 carries a catch 44 which engages a slot 45 in a lever 46 when the rocker 30 moves to the right. This lever 46 is connected a check lever 47 which acts on the coupling lever 48. When the rocker 30 is moved to the left through an angle 49 from its right hand end position it pulls the lever 46 along toward the left, whereby the check lever47 is displaced, releasing the coupling lever 48., So that the rocker 30 may continueto move to the left without influencing the lever 46, the left end of thelever 46iis raised by a rod 50 which is acted upon by a lever 51 and another lever 52. The roller of the latter lever is in contact with a cam 53. At the moment .in which lever 48 is released, the coupling 16 is disengaged by way of a rod 54 and a cam 55 and the feed screws 3 are thus stopped. By delicate adjustment of this disengagement mechanism the volume of explosive fed into the tubes 22 can be very precisely controlled.

The push rods 26 are then quickly brought back to their left hand end position, so that four more empty jackets can glide into the troughs 25.

In front of the

filling dials

12 and 21 there is a stop dial 56 which has four cells on each side. When the two

adjacent filling dials

12 and 21 turn 180 degrees, the stop dial 56 is simultaneously turned degrees. This stop dial 56 is located on the change-speed shaft 16, which bears the grooved cross 17. When the filling dials have turned, a plunger 58 is pushed into the tube from the right. Before that, at the plane of contact between the dial and the mouthpiece 4, the turning of the filling dial has separated the explosive in the tubes 22 from the explosive present in the mouthpiece 4, whereby the exact volume of explosive pressed into the tubes remains in them and control of the weight of the explosive charge per cartridge is therefore guaranteed within very small tolerances.

On the same level with the plungers 58 there are counterpoise push rods 59 which move through the cells 57 which are on top as far as the bottom of the jacket 23 on the tube 22. The plungers 58, which move from right to left, push the explosive before them and in so doing push the jackets off the tubes toward the left in suclt a way that the loaded jackets are picked up by the four' upper cells 57 of the stop dial 56. The counterpoise-push rods 59 move with the plungers but sufficiently delayedi that the explosive is tamped into the jacket, so that the: jackets, whose inside diameter is larger than the outside diameter of the tubes, are completely filled: with the explosive. When the jackets are pushed all the way into the cells 57, the counterpoise push rods 59 are quickly pushed out of the cells 57 of the stop dial toward theleft. At the same time, the plungers 58 are forced? back to their right hand end position.

The motion of the plungers 58 is imparted by a cam". 60 on shaft 35, through a roller lever 61 and a rocker 621v The motion of the counterpoise push rods 59 is imparted by a cam 63 on a shaft 64. The cam 63 acts on a roller lever 65 and a rocker arm 66, which is attached to the counterpoise push rod 59.

The cam 63 is attached to shaft 64, which is driven by shaft 40 through bevel gears 67 and 68, a vertical shaft 69, and bevel gears 70 and 71.

The loaded jackets 23 which have been picked up in the cells 57 of the stop dial 56 and whose unfolded, open end juts out beyond the edge of the cells, reach a position, when the stop dial is revolved by 90 degrees, in which the four loaded jackets are one above the other on the right side of the stop dial, in accordance with Fig. 2. In this position the

familiar folding apparatus

72, 73, 74, and begins to operate on the ends of the paper jackets (Fig. 4), and by means of this folding apparatus the folding of the open ends of the jackets takes place in a well-known manner while the stop dial 56 is standing still, thus closing the loaded jackets.

After another turn of the dial 56 the finished cartridges reach the lower position on the dial 56. Then ejector rods 76 go into operation, moving into the cells 57 toward the right, pressing the four finished cartridges 77 out of the dial, whence they are conveyed by any suitable means from the cartridge loading machine to the place where they are packed. The motion of the ejector rods is imparted by a cam 78 through a lever 79 and a rocker arm 80.

Since the two filling dials 12 and 21 turn 180 degrees at each -degree turn of the stop dial, four loaded and closed cartridges 77 leave the machine at each cycle. The cartridges are characterized by maintenance of very close tolerances in the weight of the charge.

In place of the vertical arrangement, the folding apparatus could also be horizontal, so that the ejection station would then have cells lying vertically above one another. The stop dial could also be arranged horizontally.

I claim:

1. A machine for loading cartridges, particularly gelat-- inous explosive comprising a source of explosive mate-- rial having a discharge mouth, endless screw means with-- in the said source for forcing the material through the: mouth, a rotatable filling dial located directly in front of the discharge mouth, a plurality of hollow tubes carried by the filling dial and movable into registry with said dis-- charge mouth, means to guide and support a container having one closed end in alignment with the central axis of the hollow tubes, a pusher element movable toward and away from the tubes located on the central axis of the tubes, further means to move said last named pusher element toward the tubes to force the containers onto the tubes, a further pusher element movable into the tubes to force the container with the material therein off the tube, a rotatable stop dial arranged axially parallel to and spaced from the filling dial, a series of compartments on the stop dial facing in the direction of the tubes of the filling dial, a counterpoise push rod movable into at least one of the compartments from the end opposite the said filling dial, the push rod being movable in the same plane as the further pusher element, means moving the further pusher element toward the compartment and the push rod out of the compartment so that the material is tamped into the container, and further means to eject the container from the compartment.

2. A machine as defined in and claimed by claim I further characterized in that means is provided to inactivate the endless screw means when the further pusherelement is pushed away from the tubes a predetermined. distance upon the filling of the containers.

3. A machine a s defined in claim 1 wherein a rocker is operatively connected to and moves the push rod, a catch on the rocker, a coupling lever engageable with the catch, and cam means to lift the lever from the catch.

4. A machine as defined in claim 1 wherein the push rod and pusher elements are driven from a shaft by cam and linkage means.

5. A machine as defined in claim 1 wherein the counterpoise push rods and the ejector rods defining the ejecting means are driven from a shaft by cam and linkage means.

References Cited in the file of this patent UNITED STATES PATENTS 749,644 Thorn Jan. 2, 1904 1,612,479 Wellhauser Dec. 28, 1926 FOREIGN PATENTS 359,071 Italy May 12, 1938 711,453 Germany Oct. 1, 1944 817,266 Germany Oct. 15, 1951 510,995 Belgium May 15, 1952