US2484468A

US2484468A - Jet-propelled airplane toy

Info

Publication number: US2484468A
Application number: US661132A
Authority: US
Inventors: Theodore A Schaad
Original assignee: Individual
Current assignee: Individual
Priority date: 1946-04-10
Filing date: 1946-04-10
Publication date: 1949-10-11
Anticipated expiration: 1966-10-11

Description

Oct. 11, 1949. T. A. SCHAAD JET PROPELLED AIRPLANE TOY Filed April 19, 1946 3 Sheets-Sheet l Oct. 11, 1949. T. A. SCHAAD JET PROPELLED AIRPLANE TOY 3 Shee'ts-Sheet 2 Filed April 10. 1946 wrewraxe 795000/25 A. SCf/A 0 f 1 ATTOP/VE Y Oct. 11, 1949. T. A. SCHAAD 2,484,468

' JET PROPELLED AIRPLANE TOY 3 Sheets-Sheet 3 Filed April 10, 1946 I MkM Op 795000/25 ,4. SZWAAD ATTO/Q/VE Y Patented Oct. 11, 1949 UNITED STATE s PATENT OFFICE JET-PROPELLED AIRPLANE T Theodore A. Sehaad, Detroit, Mich. Application April 10, 1946, Serial No. 661,132

Claims.

This invention relates to toys and in particular to jet propelled airplane toys.

The primary objects of the present invention are to provide a toy which employs miniature airplanes driven by the reaction of a jet of gas, preferably air, which simulates the sound of jet airplanes in flight, which demonstrates the propulsion of jet airplanes, in which the miniature jet propelled airplanes may take off and land, and which provides simultaneously combined educational and recreational features.

For the purpose of illustrating the invention, two of many possible embodiments thereof are disclosed herein. While these two embodiments employ many of the desirable features of a. unitary toy such as including air compressing means and a reservoir for compressed air, it is recognized that many other convenient means for providing compressed air or a flow of air under pressure for operating toysembodying the inven tion may be employed."

. With the foregoing in view, other objects of the invention will become apparent by reference to the following detailed description taken in connection with the accompanying drawings, in which: i Fig. 1 is an elevational view of a jet propelled airplane toy embodying the invention with portions thereof shown in section to illustrate the construction more clearly.

Fig. 2 is an enlarged fragmentary vertical sectional view at the top of the toy showing in considerable detail a preferred construction of the rotating hub and valving means employed through which air under pressure is supplied to miniature jet airplane. i

Fig. 3 is an enlarged fragmentary vertical sectional view at the bottom of the toy showing the valve means employed between the air pumping means and the rubber bladder and the sealing means employed between the bladder, the spherical housing and the base.

Fig 4 is a top plan view of the embodiment of the jet propelled airplane toy disclosed in Fig. 1.

Fig. 5 is a fragmentary horizontal sectional view taken on the line 5-5 of Fig. 2.

Fig. 6 is a side elevational view of a miniature airplane preferably employed with the invention, portions thereof being broken away to indicate how the jet tubes and jet airplane sound simulating means are incorporated thereinto.

Fig. '7 is an elevational view of another embodiment of the invention with portions thereof shown in section to illustrate the construction more clearly.

Fig. 8 is an enlarged fragmentary vertical sectional view of the top of the embodiment of the invention disclosed in Fig, 7 showing in considerable detail the rotating hub and valve means preferably employed.

Fig. 9 is an enlarged fragmentary vertical sectional view of a portion of the bottom and base of the embodiment of the invention disclosed in Fi '7.

Referring now to the drawings, wherein like numerals refer to like and corresponding parts throughout the several views, the illustrative embodiment of the invention disclosed in Figs. 1-6 inclusive comprises a circular base l0 upon which a spherical housing H is mounted as hereinafter described in detail, a bladder l2 within the said housing I I, a pump l3 within the said bladder l2 adapted to inflate the said blad-- der and create air pressure therewithin, a pair of outwardly disposed tubular arms l4 rotatably' mounted on said housing ll, communicating passages between said bladder l2 and said tubular arms 14 through which air under pressure from said bladder 12 may pass, valve means It controlling the passage of air from said bladder 1 12 to said tubular arms I4, flexible tubing l1 connected to and depending from the outer ends of said tubular arms l4, jet propelled miniature airplanes 18 connected to and depending from the said flexible tubing I! which rotate the said tubular arms l4 when air under pressure is permitted to pass from the jet airplanes l8, and either or both of the jet airplane sound simulating means l9 and I carried by said miniature jet airplane IS. The said rotation of the tubular arms l4 causes the flexible tubing I! to assume the position indicated by the dot and dash lnes I'll] in 'Fig. 1 whereby the miniature jet propelled airplanes l8 take off andfly around the said spherical housing H which is preferably provided with a map of the globe thereover.

The said spherical housing I l preferably formed of metal and is provided with diametrically opposite circular apertures 20 and 2| in the top and bottom thereof respectively. The top of the cylinder 22 of the pump I3 is provided with a cap 23 formed to include a guide 24 through which the pump rod 25 reciprocates. An operating handle 26 is threaded onto the top of the said pump rod 25 by means of which the pump piston 21 fixed onto the bottom of the pump rod 25 is manually reciproated to fill the bladder l2. The centrally 24 of the pump cap disposed tubular guide bladder l2 through the said centrally disposed tubular 23 and the pump rod 25 ex-- tend upwardly through the aperture 20 in the top of the spherical housing I I preferably in the manner hereinafter more fully described in detail,

depending lip 32 which serves as a seal against the inner cylindrical surface of the pump cylinder. 22 during the down or pumping stroke of the pump piston 21-. A; painof; thin rubber flapper valves 33 secured of the pumpoylinder 2'2.just abovepump outlet ports; 34-. by means of rivets 3,5 permitair forced from the pump l3 to enter the bladder I2; and prevent compressed:- air within the bladder I2 to escape; back intothe-said pump It; When the bladder I2- is infiatedit assumes aeposition against the inside surface of the spherical housing is! Arc inculan pumpbottom member 35 ispref'erably brazed into the. bottom of the pump cylinder 22 and. issecured to, the base ID by a suitable tom member 36 isformed to: provide an: annular beveled: bearing area: 38 which clamps down on lower annular periphery I26 of the bladder I 2 and an annular gasket tfi located. in the-lower aperture 2I. through, the; spherical housing II Whichengages the-lower annular periphery I I d of the spherical housing I:I; all insuch a manner as to. secure the pump I3-, the bladder" jacent the-annular periphery Must/hereof between: the-said annular gasket39iand the bearing area. 38 of-thesaid hump. bottom member 35;.

2 5,0, and.-2 5.1 through which .air issupplied into the pump cylinder 22 above the piston 23? from whence. it passesbelow the saidlpistonil during the"up stroke of the said'piston as hereinbeioredescribed indetail.

simultaneously secures. the: upper portion of the bladder I2- adjacent the up per annularperiphery I200- thereof betweenithesaid washers 4-1.- and. 42-. and theupper. annular periphery of, the-sphericalhousing It between.

i said washers 42 and 43. An telescoped in rotatable relationship over the thin chase 46 into andthroughthe said'oppositely disposed radially extending tubular arms It. A pair of oppositely disposed apertures or ports 48 are proyidecllthroug-h the thin upper end of the said inverted shouldered sleeve 40 which provide air thereof around the said-sleeve4-B.

The valve member I5 comprises a headedvalve sleeve 5I telescoped-over the tubular guide 24011 the pump cap 23.- and intothetop of the sleeve 0. with the bottom ofthe head 52 thereof dis.- posed against the upper annular end 49 of-the saidslightly, below the ports 48 from within thebladder I2 may pass up the inside of: the; sleeve-.49, through the ports. 48, into the chase 36 of the hub 45, through the tubular arms compression of the spr1ng54 until the bottom end of the valve sleeve 5'I passes the bottom of the ports 48. in thesleeve member 40 whereupon air pressure in the bladder I2 abovethat permitted by the said compression spring 54 is-prevented. Thus,.the--valve member IIiserves both as an on. and off valveand asafety valve.

depending flexible tube I'I; see Flg; 6. A suitable whistle tubeIQ located .in the empennage of the airplane I8 adjacentthe free-end of thejet. tube-56 is preferably employed to simulatathesound of. actual jet propelled air:- planes: in-flight. As; an alternate or auxiliary'to the whistletube- I 9 usedfor simulating the sound ofialjet propelled airplane in-flight, the sound :sim.-- ulating means I90 may be employed. Thisqsound ment of the invention .-a circular base 68 upon which a spherical housing 6! which serves as a compressed air chamber is by to engage an annular washer said air valve 15 which support the same above the said sleeve 19 to which vibrates and causes an extremely high pitch as the said jet airplanes l8 rotate around the housing H. r 1

Referring now to Figs. 1, 8 and 9, the embodidisclosed therein comprises mounted, an air supply connection 82 to said housing Bl, a pair of outwardly disposed tubular arms 63 rotatably mounted on said housing 81, communicating passages between said housing 6i and said tubular arms 83 through which air under pressure from said housing 6| may pass, valve means 84 controlling the passages of air from said housing 8| to said tubular arms 63, flexible tubing 85 connected to and depending from the outer ends of said tubular arms 63, jet propelled miniature airplanes 18 connected to and depending from the said flexible tubing 65 which rotate the said tubular arms 83 when air under pressure is permitted to pass therethrough from said housing. Either or both of the jet airplane sound simulating means 19 and I80 is preferably employed as hereinafter described in detail in connection with the said miniature jet airplanes l8 to provide realistic sound to the toy during flights of the said miniature airplanes l8. The rotation oi the tubular arms 63 causes the flexible tubing 85 to assume the position indicated by the dot and dash lines 650 in Fig. '7 whereby the miniature jet airplanes l8 take off and fly around the said spherical housing 5| which is preferably provided with a map of the globe thereover. The said housing BI is preferably secured to the circular base 88 by means of a stud 68 disposed through an aperture 81 in the center of the said base 88 and threaded into and through an anchorage disc 68 having its lower outer periphery beveled at 69 as best shown in Fig. 9 where- 10 disposed in the aperture ll formed in the bottom of the said housing 61. The tightening of the stud 66 simultaneously secures the housing 6| to the base 68 and hermetically seals the joint between the housing SI and the anchorage disc 68. The stud 68 is provided with an axial bore 12 from its threaded end 668 disposed within the said housing 8| into its head communicating with a threaded radial bore 13 therein which receives the inner threaded end of tubing 14 having a suitable air valve 15 threaded on the outer end is suitably threaded at 18 to permit connection to air supply means such as a pump, compressed air bottle or a flexible hose having a mouthpiece thereon. The base 60 is preferably provided with a plurality of feet 11 the floor or a table at a sufficient height thereabove to accommodate the said stud 86, tubing 14 and air valve 15.

The top of the said spherical housing Bl is provided with an aperture 18 through which an inverted shouldered annularly headed sleeve 19 is telescoped. An anchorage nut 88 threaded on the said sleeve 19 engages the spherical housing Bl adjacent the aperture 18 therethrough, secures the said spherical housing BI and hermetically seals the joint between the said sleeve 19 and the said housing 8|. An annular hub M is telescoped in rotatable relationship over the thin upper end of the said inverted shouldered sleeve 19 and is-supported on the top thereof. The I of the said anchorage nut 88. The said annular hub 8| is provided with an annular chase 82 around the inner periphery thereof and has outwardly disposed tubular arms 63 telescopingly supported in radially opposite apertures 83 therethrough in such a manner as to permit air to pass from the said annular chase 82 into and through the said oppositely disposed radially extending tubular arms 83. A pair of oppositely disposed ports 84 are provided through the thin upper end of the said annular sleeve 19 which provide air passages from the inner periphery of the annular sleeve 19 and the said annular chase 82 within the said hub 8|. The said sleeve 19 has its upper annular end 85 extending slightly above the top of the annular hub 8| to prevent the valve member 64 from bearing onto the top of the said annular hub 8| whereby to assure free rotation thereof around the said sleeve 19.

The valve member ,64 comprises a headed valve sleeve 81 telescoped into the top of the sleeve 19 with the bottom of the head 88 thereof disposed against the upper annular end 85 of the said sleeve 19. The valve sleeve 81 of the said valve member 86 extends downwardly in the said annular sleeve 19 a distance slightly below the ports 84 therethrough and normally closes the same. The valve sleeve 81 is preferably bored and counterbored, and the bore thereof is threaded to accommodate a stud 89 around which the conical compression spring 80 is positioned with the base of the said spring 90 disposed against the annular head of the said inverted annularly headed sleeve 18. As viewed in Fig. 8, opposite sidesof the counterbored portion of the said valve sleeve 81 are cut away at 810 in such a mannor that, when the valve member 84 is turned 90 degrees in either direction, the ports 84 are uncovered and air under pressure from within the housing 6| may pass up the inside of the sleeve 19, through the ports 84 into the chase 82 of the hub 8 I, through the tubular arms 63, through the flexible tubing 65 connected to and depending from the outer ends of the said tubular arms '63, and through the jet propelled miniature airplanes 18. If too great a pressure is created in the housing 6!, air under pressure in the sleeve 19 lifts the valve member 64 upward against the compression spring '90 until the bottom end of the valve sleeve 81 passes the bottom of the ports 84 in the sleeve member 18 whereupon air pressure in the housing 8| above that permitted by the said compression spring 90 is prevented. Thus, the valve member 86 serves both as an on and oif valve and a safety valve.

Although but two embodiments of the invention have been disclosed and described in detail it is obvious that many changes may be made in the size, shape, arrangement and details of the various elements of the invention without departing from the spirit and scope of the appended claims.

I claim:

1. A jet propelled airplane toy comprising a support, a hub having an air chamber therein rotatably mounted on said support, a pair .of diametrically opposed outwardly extending tubular arms carried by said hub and connected to said air chamber therewithin, a flexible tube connected to and depending from said outwardly extending tubular arms, an airplane mounted on the outer end of each of said flexible tubes, a jet tube disposed within each of the said airplanes and connected to one of said flexible tubes adapted to discharge air rearwardly from said "Itub'es -al jet tube-disposed within each :of 'thersaid :airplanes and tconnectedfto one .0f.'sai1d lfiexible .tubjes adapted :tordisc'harge air rearwardly 'from :saidaairplanes"whereby to causesaid airplanes .to

scarried byfsaid airplanes for: simulating the noise lo'f sj'etiairplanes inaiiightgahd meansifor supplying rair =un-der1pressure torsaid airplanes through .said I-hub,:outwardly extendingarmsand flexible .tubes.

3. A 'et :propelled :airplane toy comprising a -of diametrically opposed routwardly extending tubular arms carried bysaid :hub and connected .to said air :ohamber 3thereWithin, an airplane "mounted on the .outer end ofzea'ch ofsaid-tubular wardl-y extending arms.

4. A jet gDI'QlQQHEd airplane toy :comprising a .ho,using.serving as a ooinpressedrair. ohambena sleeve extending upwardly from vsaid housing through which. air may pass therefrom, a hub rtatably mounted \onsaid sleeve-andla manually operated lvalve means ,for capping the same, the lsaidhub havingan airchamber thereindisposed around .said "sleeve, said valve means being adapted to regulate the vflow .of air from said sleeve to the air chambenin-saidhuha pair of diametrically opposed outwardly extending tubular armslcarried by said hub :and connected :to said air chamber therewithin, an airplane mounted nnzthe .outer end .of each .of said tubular arms,.a jet tube disposed within each of the-said airplanes and connected to one .of said tubular ing the noise of a jetlairplane inflight, and'means for supplying air under pressure to said airplanes through said hub and outwardly extendingarms.

55 for regulating the .flow

5 tblilaranms ;ca1:rie.d byzsaid hub;and lconnectedjto :said :air rchamber therewithin, a :fiexible {tube connected to and depending from each rof lithe airplanes to simulate flight-around said :housing,

:andlmeans ifor supplying :air :under pressure -:to

:said :airplanes through said ihub, routwardlyiex tending .arms and flexible tubes.

:6. A jet propelled airplane toy comprising -a housing serving was a compressed air chamber,

:alsleeve extendingupwardly from said housing through which air may pass therefrom, a .hub rotatably mounted on saidrsleeve, valve means for capping the said sleeve, :the said hub :having :an

the :said =valve means carried by saidsleevehelingrmanua'lly rotatable with respect to said sleeve for regulating-the fiowvof air fromlsaidsleeve to .theair chamber insaidhuband movable axially with "respect to saidlsieeve responsiveto :air ,rpres- =sure within said (housing for :relieving air presmanually rotatable with respect to said sleeve of :air from said sleeve to the air chamber in said hub and movable axially with respect to saidsleeveresponsive .to pressure Within said iliousing for ;;relieving air ;pressure 'within .said housing, spring :means regulating 'the pressure at which :the "said valve means movesaxially to relieve air pressure within said housing, apairof diametrically opposedoutwardly extending tubular zarms carried .by said hub and connected 2110 said air chamber ':therewithimaflexible tubeconnected'to and depend- :ing from .each gofthe :said outwardly extending tubular 'arms, an airplane :mounted on athe outer :around said :housing, and means -for supplying airunder pressurezto said airplanes through said said hub having anair chamber therein disposed chub,outwardly:extendingxarmseandfiexihleitubes 8. A jet propelled airplane toy comprising a housing serving as a compressed air chamber, a sleeve extending upwardly from said housing through which air may pass therefrom, a hub rotatably mounted on said sleeve, valve means for capping the said sleeve, a pump disposed within said housing including a hollow pump rod and a guide therefor extending through said valve means, the said hollow pump rod having communicating apertures therethrough through which air is permitted to pass from without said housing to within the chamber of said pump, pump valve means admitting air under pressure from said pump to within said housing during the pressure stroke of said pump and preventing the escape of air from said housing through said pump, the said hub having an air chamber therein disposed around said sleeve, the said valve means carried by said sleeve being manually rotatable with respect to said sleeve for regulating the flow of air from said sleeve to the air chamber in said hub and movable axially with respect to said sleeve responsive to air pressure within said housing for relieving air pressure within said housing, spring means regulating the pressure at which the said valve means moves axially to relieve air pressure within said housing, a pair of diametrically opposed outwardly extending tubular arms carried by said hub and connected to said air chamber therewithin, a flexible tube connected to and depending from each of the said outwardly extending tubular arms, an airplane mounted on the outer end of each of the said flexible tubes, a jet tube disposed within each of the said airplanes and connected to one of said flexible tubes adapted to discharge air rearwardly from said airplanes whereby to cause said airplanes to simulate flight around said hous- 9. A jet propelled airplane toy comprising a housing, a bladder liner within said housing serving as a compressed air chamber limited in expansion by the walls of said housing, a sleeve extending upwardly from said bladder through said housing through which air may pass therefrom, a hub rotatably mounted on said sleeve, valve means for capping the said sleeve, the said hub having an air chamber therein disposed around said sleeve, the said valve means carried by said sleeve being manually rotatable with respect to said sleeve for regulatin the flow of air from said sleeve to the air chamber in said hub and movable axially with respect to said sleeve responsive to air pressure within said bladder for relieving air pressure within said bladder, spring means regulating the pressure at which the said valve means moves axially to relieve air pressure within said bladder, a pair of diametrically opposed outwardly extending tubular arms carried by said hub and connected to said air chamber therewithin, a flexible tube connected to and depending from each of the said outwardly extending tubular arms, an airplane mounted on the outer end of each of the said flexible tubes, a jet tube disposed within each of the said airplanes and connected to one of said flexible tubes adapted to discharge air rearwardly from said airplanes whereby to cause said airplanes to simulate flight around said housing.

10. A jet propelled airplane toy comprising a housing, a bladder liner within said housing serving as a compressed air chamber limited in expansion by the walls of said housing, a sleeve extending upwardly from said bladder through said housing through which air may pass therefrom, a hub rotatably mounted on said sleeve, valve means for capping the said sleeve, a pump disposed within said bladder including a hollow pump rod and a guide therefor extending through said valve means, the said hollow pump rod having communicating apertures therethrough through which air is permitted to pass from without said bladder to within the chamber of said pump, pump valve means admitting air under pressure from said pump to within said bladder during the pressure stroke of said pump and preventing the escape of air from said bladder through said pump, the said hub having an air chamber therein disposed around said sleeve, the said valve means carried by said sleeve being manually rotatable with respect to said sleeve for regulating the flow of air from said sleeve to the air chamber in said hub and movable axially with respect to said sleeve responsive to air pressure within said bladder for relieving air pressure within said bladder, spring means regulating the pressure at which the said valve means moves axially to re lieve air pressure within said bladder, a pair of diametrically opposed outwardly extending tubular arms carried by said hub and connected to said air chamber therewithin, a flexible tube connected to and depending from each of the said outwardly extending tubular arms, an airplane mounted on the outer end of each of the said flexible tubes, a jet tube disposed within each of the said airplanes and connected to one of said flexible tubes adapted to discharge air rearwardly from said airplanes whereby to cause said airplanes to simulate flight around said housing.

THEODORE A. SCHAAD.

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

UNITED STATES PATENTS Number Name Date 700,494 Cady Sept. 20, 1904 1,295,118 Canaday Feb. 25, 1919 1,357,706 Helpern et al Nov. 2, 1920 1,564,352 Jensen Dec 8, 1925 1,751,723 Borgeson Mar. 25, 1930 2,336,725 Englehart Dec. 14, 1943