US2538333A

US2538333A - Signal or smoke rocket

Info

Publication number: US2538333A
Application number: US783023A
Authority: US
Inventors: Schermuly Conrad David; Schermuly Alfred James; Schermuly Charles
Original assignee: Individual
Current assignee: Individual
Priority date: 1946-10-30
Filing date: 1947-10-30
Publication date: 1951-01-16
Anticipated expiration: 1968-01-16
Also published as: GB617738A; FR954764A

Description

Jan. 16, 1951 c. D. SCHERMULY ET AL 2,538,333

SIGNAL OR SMOKE ROCKET Filed Oct. 50,1947

5 Sheets-Sheet 1 ASQZJMYWL, I

ATTORNEYS.

c. D. SCHERMULY ET AL 2,538,333

Jan. 16, 1951 SIGNAL OR SMOKE ROCKET 3 Sheets-Sheet 2 Filed 001:. 30, 1947 Q INVE TORS,

BY 7M 7 ATTORNEYS.

\ 3 Figure 2 in which position the rocket travels through the air emitting smoke through the choke 8 in the rear end of the casing 2 during the whole, or a substantial part, of its flight.

Referring now to Figures 6 to 8, the rear casing 20 is movable axially within the front casing 2|. Movement ofthe casing'ZEI rearwardly is limited byi the abutment of a flange 22 on the front end of the casing 20 against an annular stop 23 fixed in the rear end of the casing 2| by welding or by means of screws.

The rear portion of the casing 21 is provided with four apertures 2% to allow for the escape of the gases generated by the burning of the propellent composition in the casing 2|.

The casings 2! and 20 may be charged with propellent and smoke-producing composition in exactly the same way as the casings I and 2 in Figures 1 to 5. Alternatively, and as shown in Figure 8, both compositions may be of the kind which burn inwardly from the outer surface, instead of outwardly as in Figures 1 to 5.

- Referring to Figure 8, the propellent composition 25 is in the form of a. pressed cylinder which is held in spaced relation to the casing 21 by means of bands; 26. surrounding the composition 25 and provided with projections 27 to form spiders. The pressed cylinder 23 of smoke producing composition is similarly supported in the casing by means of spiders 29. Ignition of the compositions andi28 is effected by means of fuzes 30 and 3|. The fuze 30, which is attached to the rear end of the composition 25, passes through an orifice in the conical plug 32, through the space between the composition 28 and the casing 20 and out through an orif ce in the choke collar [4 on the rear casing I is provided with two further sleeves 34 in which are rigidly secured rods 35. Freely slidable on the rods -35-are two sleeves 36 (Figure 10) which are secured to the inside of a band 37. Three bars 33 are welded at one end to the outside of the band 37 and at the other end to the inside of a wider band 39,the

bands

37 and 39 and the bars 38' together with the sleeves 35 constituting a sliding tail. Stops 40 are welded or screwed onto the ends of the the bars 42.

4 rods 35 to limit the rearward movement of the sliding tail. When the rocket is in flight, the sliding tail occupies the position shown in Figure 11, thus stabilising the flight of the rocket.

Referring now to Figures 12 and 13, the parts which are the same as in Figures 6 to 8 are designated by the same reference numerals.

The sliding tail in this instance is formed of a band 4! slidable on the casing 20 and joined by three bars 42 to a wider band 43. Slots 44 are provided inthe annular stop 23 to accommodate A flange 45 is provided at the rear end of the casing 20 to act as a stop to limit rearward movement of the sliding tail on the casing We claim:

1. A rocket comprising a front casing, a rocket propellent composition within said front casing,

rods secured to the front casing, a rear casing slidably carried by said rods, a signalling composition within the rear casing and a passage through the length of the signalling composition in the rear casing whereby the flash from an actuating cartridge may reach and ignite the rocket propellent composition in the forward casing and at the same time ignite the signalling composition, said rear casin being capable of a limited axial sliding movement on the rods, relative to the front casing, whereby upon discharge of the rocket, the front casing moves forward relative to the rear casing to the extent of the limited movement to maintain the two compositions in spaced relationship during the flight of the rocket while prior to discharge the two casings may be moved towards each other to reduce the overall'length of the rocket.

2. A rocket as claimed in claim '1 in which the rear casing is provided with a sliding tail.

CONRAD DAVID SCHERMULY. ALFRED JAMES SCHERMULY. CHARLES SCHERMULY.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS.

Number Name Date 376,375 Fletcher Jan. 10, 1888 479,738 Cunningham July 26, 1892 1,049,144 Quisling Dec. 31, 1912 1,879,840 Brandt Sept. 27, 1932 2,359,515 Fanger Oct. 3, 1944 2,409,904 Schermuly et a1. Oct. 22, 1946 FOREIGN PATENTS Number Country Date 392,902 France Oct. 9, 1908