DE49845C - Device for emitting and registering sound signals for determining the direction of travel of ships - Google Patents

Description

IMPERIAL

PATENT OFFICE.

PATENT LETTERING

CLASS 74: Signaling.

JOHI A. F. ENGEL in HAMBURG.

of ships.

Fatentirt in the German Empire from April 3, 1889.

The purpose of the device is to dispense a number uniformly in the vicinity distributed, equally strong tones from a non-resonant sound tube in which the standing tone vibrations of the tone-producing apparatus already in progressive vibrations have passed over to enable a foreign ship to determine the ordinal number of the in the connecting line of the two ships given tone to the periodic changes of the To recognize tone strength and timbre, from which then in connection with the particularly to Marking north direction both the local position and the direction of travel of your own Ship is to be announced to the foreign ships, which this signal with help can easily interpret a particular apparatus.

The sound apparatus, Fig. 1, consists of a tube r mounted in the frame A , rotatable in its upper part, which carries the valve ν and the whistle ρ. The latter is surrounded at its opening by the box k, to which the horn S adjoins, and which on the other hand carries the counterweight g. The pipe, the box k, and the bell are covered on the outside with a layer of rubber, sand, or felt f , so that the sound is thrown only in one direction, depending on the position of the bell.

On the movable part of the pipe r is attached the lever h which can be rotated about a horizontal axis, with which the pipe r can be rotated and the whistle can be made to sound. When the tube r rotates , the lever h is lifted over the elevations of the ring \ , with the lug on the lever arm sliding in the loop of the pull rod s. Only when the lever h is lowered so far that it enters one of the twelve gaps m , the valve ν is opened and the whistle is made to sound either by steam or by means of pressurized air.

The apparatus is set up in the longitudinal axis of the ship near a compass and used as follows:

If one recognizes the approach of a ship from the prescribed fog signals, the above-described rotating whistle, which appropriately receives the same sound as the normal steam whistle of the ship, is activated in such a way that the first sound in the direction of the longitudinal axis of the ship backwards and each The following tone is given to the right according to the sequence of the numbered columns m.

Each tone is given a certain length.

In the north direction, however, there are two short, immediately upon one column successive tones emitted.

The end of the compass housing can be provided on the inside with a fixed ring divided into twelve equal parts, from which one can easily read the number of the column m of the apparatus, Fig. 1, which - taking into account the deviation - is closest to the north direction 'Coming soon.

The given signal is intended to easily determine the direction of travel of the invisible Enable ship because of the ordinal number of the double tone; but what is more important is, it should also indicate the position of the line connecting the ships. This for the following reasons:

Depending on the direction of the horn, as mentioned, both the strength and the timbre of the twelve resp. thirteen notes

change periodically, and the change in timbre will be particularly noticeable when the whistle has a sharp, rasping sound.

The most clearly audible tone should be exactly or at least close to the position of the bell in the line connecting the two ships. So it's the angle given that the direction of travel of the invisible ship forms with this connecting line. On the other hand, since the direction of travel itself is known from the double tone, so is it also determines the position of the connecting line.

The small apparatus, Figs. 2 and 3, serves to be able to register and interpret the signal described quickly and correctly. It consists of three disks s ¹ s ² and s ³ made of any material. The lower disc, divided into twelve equal parts, is fastened in the longitudinal axis of the ship, so that the number 1 lies in the direction of the rudder.

This disk carries a rod over which the hollow axis of the disk S _{2 is} inserted, the latter again carrying _{the concentrically rotatable disk s 3.}

The disk S ₂ ends in a pointer. The disk S ₃ , provided with a sketch of a ship, is divided into twelve equal parts, which are numbered according to the sequence of the signal tones.

As soon as one now hears the signal of a strange ship, one sets S ₃ so that the ordinal number of the most clearly audible tone - whereby the double tone is counted for one tone - is opposite the mark η on the pointer, and then turns the pointer so that that number of the disk S ₃ , which corresponds to the double tone, points to the north. The disk s and the above-mentioned division in the computer housing serve to facilitate this setting. The last-mentioned number of the disk S ₈ is compared to that division of the disk S ₁ which comes closest to the north direction.

The pointer, Fig. 2, now indicates the line connecting the two ships and the sketch on disk S ₃ indicates the direction of travel of the non-visible ship.

In the position given in FIG. 2, the sixth tone of the signal would accordingly be the clearest and the third would have been heard twice. -

Incidentally, the deviation of the compass would also have to be taken into account.

The apparatus Fig. 2 and 3 can also be used by such ships. which do not yet have the apparatus of FIG. 1, so that a ship carrying the latter apparatus can bring oncoming steamships to the correct evasion, and sailing ships can also cause an emergency signal to be given, even if these ships do not operate the apparatus of FIG. 1. 4 and 5 represent a modification of the apparatus of FIG. 1. The lever h, the extension t of which is depressed in the manner described in notches in the plate ^ ¹ , acts on the piston of a fog horn.

A still further simplification is shown in FIG. 6. A fog horn with piston and push rod on a stand on the pin and rotatable, which carries a hinge; so that the attached to the horn pin f ¹ of the incisions m of the rim ■ {lifted and the horn can be rotated as desired.

Claims (2)

Patent Claims:. ι. A sound apparatus with a horizontally lying, rotatable around a vertical axis, covered with felt or the like horn (S), which can be fixed in any predetermined positions. 2. An apparatus serving for the registration of the signals given according to claim 1., containing a rotatable about a vertical axis, with a ship sketch - or another mark showing the direction of travel of a ship - provided and. corresponding to the signal tones emanating from this sketched ship, disc S _{3 covered with numbered tick marks, which rests concentrically rotatable on a disc S 2} which is provided with a pointer and which is itself centrically rotatable, so that by setting the number of the disc S ₃ which corresponds to the ordinal number the audible clearest signal tone corresponds to the brand η on the pointer of the slice S ₂ and then by adjustment of the disc S ₃ entraining disc S ₂ in such a way, that that number of the disk S ₃ corresponding to the ordinal number of the given double tone, by Is directed north, the pointer of the disk S ₂ in the line connecting the two ships and the ship sketch on the disk S ₃ in the direction of travel of the foreign ship. For this purpose ι sheet of drawings.