PL23936B1

PL23936B1 - Rl. 62 C, 5 / Ói. Propeller with a pitch that can be changed during the flight.

Info

Publication number: PL23936B1
Application number: PL23936A
Authority: PL
Filing date: 1935-05-15
Publication date: 1936-10-31

Description

Przedmiotem niniejszego wynalazku jest smiglo o zmiennym skoku; Na rysunku przedstawiono przyklad wykonania smigla wedlug wynalazku.Smiga / jest nakrecana na tuleje sta¬ lowa 2, zaopatrzona w! kolnierz 3. Kolnierz ten stanowi bieznie dla lozyska rolkowego 4. Smiga jest srodkowana zapomoca czopa 5, stanowiacego jedna calosc z piasta smi¬ gla. Wspomniany kolnierz tulei 3 posiada wywiercony otwór 6, w który wstawia sie jeden z trzpieni wkladki 7 zaopatrzonej w dwa przeciwlegle trzpienie. Drugi trzpien tej wkladki wchodzi w otwór wasa 16, sta¬ nowiacego jedna calosc lub polaczonego przegubowo z pierscieniem 8, dajacym sie przesuwac w kierunku osiowym na piascie smigla. Calosc mechanizmu smigla jest za¬ kryta tuleja 9, skladajaca sie z dwóch po¬ lówek, zlaczonych czterema srubami 10.Obrzeza tulei 9 sa zagiete do srodka i sta¬ nowia podstawe dla biezni 11 lozyska rol¬ kowego. Na beben 12 sa nawiniete linki w ten sposób, iz przez pociaganie linek moz¬ na go obracac w obydwie strony. Beben 12 posiada dwa wewnetrzne gwinty. Jeden sluzy do nakrecania go na czesc stala 13, przykrecona do karteru silnika, drugi zas do nakrecania na ruchomy pierscien 14 lozyska kulkowego. Przytem pierscien 14 posiada skrzydelka 15, zabezpieczajace go od przekrecania sie. Dzialanie smigla jest nastepujace.Pilot, pociagajac za linke, obraca beben 12. Wskutek tego obrotu pierscien ruchomy 14 jest wkrecany lub wykrecany z bebna i£ra| sam ruch otrzymuje i pierscien 8, który sta¬ nowi jedna calosc z wasami 16. Wasy 16 dzialaja przez wklajlke z trzpieniami na tuleje 2 i przekrecaja ja 6 pewien kat. Po¬ niewaz smiga 1 jest ustalona w stosunku do tulei 2, ulega ona temuz przekreceniu.W celu umozliwienia regulacji wielkosci skoku smigla oraz poczatkowego kata na¬ stawienia smig, wkladka 7 jest wymienna.Wzajemne przesuniecie osi trzpieni wklad¬ ki wplywa na zmiane poczatkowego na¬ stawienia smigi. PLThe present invention relates to a variable pitch propeller; The drawing shows an exemplary embodiment of the propeller according to the invention. The flashing / is screwed onto a steel bushing 2 provided with flange 3. This flange is a raceway for the roller bearing 4. The smiga is centered on the pin 5, being one piece with the propeller hub. Said collar of sleeve 3 has a drilled hole 6 into which one of the pins of an insert 7 provided with two opposite pins is inserted. The second pin of this insert engages in the hole 16, which is one piece or pivotally connected to a ring 8 that can be slid axially on the propeller shaft. The entire propeller mechanism is a covered sleeve 9, consisting of two halves connected by four bolts 10. The edges of the sleeve 9 are bent inwards and form the basis for the raceway 11 of the roller bearing. Cables are wound on the drum 12 in such a way that it can be turned in both directions by pulling the lines. The drum 12 has two internal threads. One is for screwing it on the fixed part 13, screwed to the crankcase, the other for screwing it on the movable ring 14 of the ball bearing. Moreover, the ring 14 has wings 15 securing it against twisting. The operation of the propeller is as follows. The pilot, pulling the cable, turns the drum 12. As a result of this rotation, the movable ring 14 is twisted or twisted out of the drum and. the movement itself receives and the ring 8, which is one whole with you 16. The vas 16 act through a pin insert on the sleeves 2 and twist it 6 a certain angle. Since the line 1 is fixed in relation to the sleeve 2, it is thus subject to In order to allow adjustment of the propeller pitch and the initial angle of the propeller positioning, the liner 7 is replaceable. The mutual displacement of the axis of the insert pins influences the change of the initial prop alignment. PL

Claims

Patent claims. 1. Propeller with a pitch that can be changed during flight, characterized by the fact that its strands are screwed on sleeves, the flanges of which are the raceways or the bases of the raceways for ball or roller bearings, and the sleeves are also centered on the pins forming one piece with the propeller hub.

2. Propeller according to claim According to one of the preceding claims, the hub flange, which serves as the base of the bushing of each strand, is provided with a rectangular insert, provided with two opposing pins which are movable longitudinally with respect to the propeller shaft.

3. Propeller according to claim 1 and 2, the characteristic area, with the flange of each sleeve on which the thread is screwed has a hole or cut into which one of the pins of the respective insert fits, while its other pin enters a suitable cut made on one of the tabs connected with a ring (8) that can be moved along the hub.

4. Propeller according to claim 1 - 3, characterized by the fact that it has a drum that can be rotated by means of a rope, which on one side is screwed onto the fixed part (13), fixed in relation to the motor, and on the other side is threaded onto the outer ring of the bearing ball (14) which, when rotating, moves the bearing longitudinally, whereby the ring with bars (16) slides longitudinally and causes the impeller to rotate. Witold Brzozowski. \ R <* ^ $ * 0 because of the patent description Kr 23936. $ * "*« M O K Druk L. Boguslawski i Ski, Warsaw. PL