NO128687B

NO128687B -

Info

Publication number: NO128687B
Application number: NO14871563A
Authority: NO
Inventors: R Oberman; A Snijders
Original assignee: Philips Usfa Nv
Priority date: 1962-05-18
Filing date: 1963-05-18
Publication date: 1973-12-27
Also published as: DK234263A; GB1120032A; FR1589355A

Abstract

1,120,032. Random number generators; ciphering. PHILIPS USFA N.V. 17 May, 1963 [18 May, 1962], No. 19835/63. Headings G4D and G5X. A cryptographic device provided with at least one key element, which element can cyclically run through a series of conditions of predetermined length to regain an arbitrary starting position and which is provided with a driving means for the cyclic stepping from one condition to the next and with a reading device, is characterized in that the element is a feedback shift register, the sections of which, when the register is driven, run through a series of conditions and at least one section of which is used as a reading point for the reading device. A device with three feed-back shift registers 1, 2 and 3 is shown in Fig. 1, each having five sections a, b, c, d, e; f, g, h, i, j; and k, l, m, n, o respectively. Each register 1, 2 and 3 is provided with a driving means 9, 10 and 11 and a reading device 16, 17 and 18. Control pulses are fed from a driving mechanism 15 to the driving means 9 of the register 1 and at each pulse, the contents (i.e. " ones " and " zeroes ") present in the sections a to e are shifted to the right by one section and at the same time the signals from the sections c and e are added byamodulotwo circuit 4 and the result shifted into the section a. The contents present in the sections a to e repeat themselves after each set of 31 pulses. The condition of the section e is read by the device 16, the latter being a modulotwo circuit the other input of which is connected to a signal source 19 which emits either a " zero " or a " one." The output from the device 16 is passed on to an " AND " gate 20 and to a modulo-two circuit 17 and if this output is a " one," the gate 20 which is connected to the driving mechanism 15 will open and the register 2 will be shifted. The reading device 17 reads the condition of the section i and controls an " AND " gate 21 connected to the driving mechanism 15 and a reading device 18. The blocks 22, 23 and 24 framed in broken lines in Fig. 1, represent units by which the device can be extended at will. It should be noted that different feed-backs are employed in each of the units, the shift registers therefore generating series of different patterns. The signal appearing at the terminal 25 can be used as a key for ciphering or deciphering. It may be of advantage to provide the units with a separate reading device for the generation of a random sequence of " ones " and " zeroes." For this purpose, the condition read by a reading device 35 at section b of register 1 is added modulo-two to the condition of a signal source 38. The output of the device 35 after being added modulo-two to the condition read by a device 36 at section h of register 2 is supplied to a device 37. Eventually on a terminal 39 there appears a signal resulting from the modulo-two addition of the conditions of the registers to the condition of the signal source 38. A unit for-which the reading place may be varied is described (Fig. 2, not shown). Instead of connecting the registers one after the other, as is shown for the registers of Fig. 1, the registers may be combined to form a multiple shift register, as is described with reference to Fig. 3 (not shown), for the case of two registers, which enables a large number of short series of " ones " and " zeroes " to be generated instead of a single series of extensive length.

Description

Apparat til parafinering av sprengstoffpatroner. Apparatus for paraffinizing explosive cartridges.

Foreliggende oppfinnelse angår et til parafinering av sprengstoffpatroner egnet apparat, omfattende en med oppvarm-ningsanordning forsynt parafineringsbe-holder, samt en anordning for føring av patronene gjennom et bad av smeltet parafin som befinner seg i beholderen. The present invention relates to an apparatus suitable for paraffining explosive cartridges, comprising a paraffining container provided with a heating device, as well as a device for guiding the cartridges through a bath of molten kerosene located in the container.

Ifølge oppfinnelsen består anordningen According to the invention, the device consists

for føring av patroner gjennom parafinbadet av en over parafinnivået anordnet konisk skive som er festet til den øvre ende av en roterbart lagret aksel hvis nedre ende er forbundet med en drivanordning, og hvis akse danner en liten vinkel (f. eks. 5°) med vertikallinjen. for guiding cartridges through the paraffin bath by a conical disk arranged above the level of the paraffin which is attached to the upper end of a rotatably supported shaft whose lower end is connected to a drive device, and whose axis forms a small angle (e.g. 5°) with the vertical line.

Iføleg en foretrukken utførelsesform According to a preferred embodiment

for oppfinnelsen er oppvarmningsanord-ningen anordnet i høyde over beholderens bunn, umiddelbart over vann-nivået. Her-ved oppnåes bl. a. den fordel at vannbadet kan holdes ved lav temperatur. for the invention, the heating device is arranged at a height above the bottom of the container, immediately above the water level. Hereby, among other things, a. the advantage that the water bath can be kept at a low temperature.

Ifølge et videre trekk ved oppfinnelsen According to a further feature of the invention

består anordningen for føring av patroner gjennom parafinbadet av en over parafinnivået anordnet konisk skive, hvilken skive er festet til den øvre ende av en roterbart lagret aksel hvis nedre ende er forbundet med en drivanordning og hvis akse danner en liten vinkel (f. eks. ca. 5°) med vertikallinjen. the device for guiding cartridges through the paraffin bath consists of a conical disk arranged above the paraffin level, which disk is attached to the upper end of a rotatably supported shaft whose lower end is connected to a drive device and whose axis forms a small angle (e.g. approx. . 5°) with the vertical line.

Oppfinnelsen omfatter forøvrig en rek-ke trekk og fordeler som skal beskrives nærmere i forbindelse med tegningen. The invention also includes a number of features and advantages which shall be described in more detail in connection with the drawing.

På tegningen viser fig. 1 et apparat ifølge en utførelsesform for oppfinnelsen sett fra høyre på fig. 2. Fig. 2 viser apparatet på fig. 1 sett fra venstre resp. i aksialsnitt. Fig. 3 er et til fig. 1 hørende grunnriss. På tegningen betegner 1 en beholder med sylindrisk vegg 2 og skråttstillet bunn 3. Beholderen hviler på ben 4. Bunnen er nedentil utført med en sirkelformet åpning 3a til hvis omkrets det er festet en konisk mantel 5, som strekker seg opp til et nivå omtrent i høyde med overkanten av beholderen. In the drawing, fig. 1 an apparatus according to an embodiment of the invention seen from the right in fig. 2. Fig. 2 shows the device in fig. 1 set from the left or in axial section. Fig. 3 is a to fig. 1 hearing floor plan. In the drawing, 1 denotes a container with a cylindrical wall 2 and an inclined bottom 3. The container rests on legs 4. The bottom is made with a circular opening 3a to the circumference of which a conical mantle 5 is attached, which extends up to a level approximately in height with the upper edge of the container.

I noen høyde over bunnen 3 er det anordnet et antall radialstillete understøttel-seselementer 6 for en varmespiral 7, inn-rettet til å gjennomstrømmes av et varme-medium. Dette innføres ved 7a, og føres ut ved 7b. Ifølge et vesentlig trekk ved oppfinnelsen er der i det nedre av beholderen fylt vann 8, hensiktsmessig til overkanten av elementene 6. Over dette vannbad flyter parafinbadet 9, som strekker seg opp til nivået 9a. I beholderveggen er der en åpning 10, fra hvilken der strekker seg ut i radial retning en nebbformet utvidelse 11. I den øvre del av dette nebb er det anordnet et antall parallelle plateformete sten-ger 12, som er anordnet på høykant, slik at de strekker seg ned i parafinbadet, men med sine overkanter befinner seg over dette. At some height above the base 3, a number of radially positioned support elements 6 are arranged for a heating coil 7, arranged for a heating medium to flow through. This is introduced at 7a, and carried out at 7b. According to an essential feature of the invention, water 8 is filled in the lower part of the container, suitably to the upper edge of the elements 6. Above this water bath floats the paraffin bath 9, which extends up to level 9a. In the container wall, there is an opening 10, from which a beak-shaped extension 11 extends in the radial direction. In the upper part of this beak, a number of parallel plate-like rods 12 are arranged, which are arranged on a high edge, so that they extends down into the paraffin bath, but with its upper edges is located above this.

13 betegner et nivåglass. 13 denotes a level glass.

14 og 15 er føringer som er festet til beholderveggen, og som skal beskrives nærmere i forbindelse med apparatets virke-måte. 16 er likeledes en føring, utført i form av en spiralformet ring som strekker seg noe over 360°, slik at der mellom dens endepartier dannes en passasje 17a. 17b er en føringsplate som strekker seg i tilknytning til passasjen 17a. 14 and 15 are guides which are attached to the container wall, and which will be described in more detail in connection with the operation of the device. 16 is likewise a guide, made in the form of a spiral ring which extends slightly over 360°, so that a passage 17a is formed between its end parts. 17b is a guide plate which extends adjacent to the passage 17a.

18 er en konisk skive som er festet til den øvre ende av en roterbart lagret aksel 19, som er anordnet litt på skrå, f. eks. 5° 18 is a conical disk which is attached to the upper end of a rotatably supported shaft 19, which is arranged slightly at an angle, e.g. 5°

i forhold til vertikallinjen. Den nedre ende av akselen 19 er forbundet med en pas- relative to the vertical line. The lower end of the shaft 19 is connected with a pas-

sende drivanordning 20. Skiven 18 er an- send drive device 20. Disc 18 is an-

ordnet over parafinnivået, og umiddelbart under det ringformete føringselement 16. arranged above the kerosene level, and immediately below the annular guide element 16.

I skiven er det hengt opp en sylindrisk ringformet plate 22, som henger i elemen- A cylindrical ring-shaped plate 22 is suspended in the disc, which hangs in the element

ter 23. Til platen 22 er det festet en for- ter 23. To the plate 22 is attached a for-

trinnsvis perforert hylle tjenende til opp- stepwise perforated shelf serving for up-

tagning av patroner som skal parafineres. taking cartridges to be paraffined.

Slike patroner er forskjellige steder på fi- Such cartridges are in various places on the fi-

gurene antydet med stiplete linjer, og be- the gures indicated by dashed lines, and be-

tegnet med 21. Hyllen 24 er anordnet slik at den ved sitt laveste punkt (til venstre på fig. 2) befinner seg så langt under para- marked with 21. The shelf 24 is arranged so that at its lowest point (on the left in Fig. 2) it is as far below para-

finnivået at patronene 21 vil være neddyk- the fine level that the cartridges 21 will be submerged

ket. På den motsatte side av apparatet be- ket. On the opposite side of the device be-

finner hyllen 24 seg over parafinbadet (til høyre på fig. 2). Til hyllen 24 er det med jevne mellomrum festet et stort antall trådformete metallelementer 26, som er bøyet vinkelformet, slik at de øvre ben 25 the shelf 24 is located above the paraffin bath (on the right in fig. 2). A large number of wire-shaped metal elements 26 are attached to the shelf 24 at regular intervals, which are bent at an angle so that the upper legs 25

danner en øvre hylle for patroner 21. Denne hylle befinner seg i sin helhet over parafin- forms an upper shelf for cartridges 21. This shelf is located entirely above the kerosene

nivået. the level.

Virkemåten av apparatet er følgende. The operation of the device is as follows.

Patroner som skal parafineres faller ned på Cartridges to be paraffined fall onto

skiven 18, som antydet ved A, og føres av skiven rundt i retning av pilen B på fig. 3. Patronene hindres i å gli ned fra skiven the disk 18, as indicated at A, and is guided by the disk around in the direction of arrow B in fig. 3. The cartridges are prevented from sliding down from the disc

av ringen 16. Ved ankomst til passasjen 17a vil en patron av gangen føres ut fra skiven 18 og ledes av platen 17b ned på den nedre hylle 24. Under den videre rotasjon føres patronene ned i parafinbadet og opp igjen på den motsatte side, og støter deretter mot platen 14, som leder den opp på hyllen 25. Her får overskudd av parafinen anled- of the ring 16. On arrival at the passage 17a, one cartridge at a time will be led out from the disc 18 and guided by the plate 17b down onto the lower shelf 24. During the further rotation, the cartridges are led down into the paraffin bath and up again on the opposite side, and collide then towards the plate 14, which guides it up onto the shelf 25. Here, excess kerosene causes

ning til å renne av, mens patronene føres nesten en omdreining rundt apparatet. Pa- ning to drain, while the cartridges are guided almost one revolution around the device. On-

tronene ledes deretter av føringen 15 ut på the thrones are then guided by the guide 15 onto

stengene 12, hvor parafinen fremdeles har anledning til å renne ned i parafinbadet. the rods 12, where the kerosene still has the opportunity to flow down into the kerosene bath.

Smeltet parafin tilføres gjennom en Molten kerosene is supplied through a

ledning 28 fra en på tegningen ikke vist kilde. Parafinnivået holdes ved hjelp av en flotøranordnihg, eller på annen passende måte, på konstant høyde. wire 28 from a source not shown in the drawing. The kerosene level is kept at a constant height by means of a float device, or by other suitable means.

Nitroglycerol som tilføres parafinbadet p.g.a. spill m. v. synker ned i vannbadet 8. Spylevann kan tilføres gjennom en led- Nitroglycerol, which is added to the paraffin bath due to spillage etc. sinks into the water bath 8. Flushing water can be supplied through a

ning 30, mens vannet som inneholder ni- ning 30, while the water containing nine-

troglycerol, oppløst eller bunnfelt, kan tap-pes ut gjennom avløpet 29. troglycerol, dissolved or settled, can be drained out through the drain 29.

Claims

1. Paraffinizing apparatus for explosive cartridges, comprising a paraffinizing container provided with a heating device, as well as a device for guiding the cartridges through a bath of molten paraffin located in the container, characterized

characterized in that the device for guiding cartridges through the paraffin bath comprises a conical disc (18) arranged above the paraffin level which is attached to the upper end of a rotatably supported shaft (19) whose lower end is connected to a drive device, and whose axis forms a small angle (e.g. 5°) with the vertical line.

2. Apparatus as stated in claim 1, characterized in that the shaft (19) is surrounded by a mantle (5) which extends from the bottom of the container to above the kerosene level.

3. Apparatus as stated in claim 1, characterized in that an annular, preferably perforated shelf (24) is attached to the conical disc (18), along its circumference and parallel to it, which is located at such a height below the circumference of the disk that a cartridge, which is on the shelf at its lowest point, will be completely immersed in the bath, while the shelf's highest point will be above the kerosene level.

4. Apparatus as stated in claim 3, characterized in that above the shelf (24), but below the periphery of the disc (18), there is another shelf (25), whose lowest point is located immediately above the kerosene level.

5. Apparatus as stated in claim 4, characterized in that the shelf (25) is formed by approximately horizontal legs of angular curved wire-shaped metal elements (26), whose approximately vertical legs are attached to the shelf (24) at their lower ends.

6. Apparatus as stated in claim 3, or the following, characterized in that a fixed guide plate (14) is arranged approximately at the highest point of the shelf (25), which, when the shelf (24) is rotated, guides the cartridges onto the shelf (25).

7. Apparatus as stated in claim 3 or the following, characterized in that near the upper part of the shelf (24) or (25) is arranged a guide (15) for discharging the cartridges.

8. Apparatus as stated in claim 1 or the following, characterized in that the container is made with a beak-shaped extension (11), the upper edge of which is at the same height as the upper edge of the container, and which is made above with a perforated base on which the cartridges can be fed out from the container.

9. Apparatus as set forth in claim 8, characterized in that the mentioned substrate consists of a number of parallel plate-shaped, elongated elements (12), which extend in the direction from the container and are placed on a high edge, so that they protrude below into the paraffin bath that extends into the beak (11).

10. Apparatus as stated in claim 1 or the following, characterized in that a stationary spiral-shaped guide element (16) is arranged above the disc (18) near its periphery, which extends a little more than 360°, so that between the two end parts of the guide element forms a passage through which the cartridges can be guided out the conical disk (18), and down onto the shelf (24).

11. Apparatus as stated in claim 3 or the following, characterized in that a cylindrical plate (22) is suspended in the disc (18) which dips into the paraffin bath, and to which plate the shelf (24) is attached.

12. Apparatus as stated in claim 1, where the paraffin bath floats on a water bath, characterized in that the heating device is arranged at a height above the bottom of the container immediately above the water level.

13. Apparatus as stated in claim 12, characterized in that the bottom of the container is inclined, and that there is an outlet for the water near the lowest point of the bottom, and preferably near the highest point of the bottom an inlet designed to be connected to a cold water line for flushing the bottom.