US1902205A - Hangar for aeroplanes and the like - Google Patents

Description

March 21, 1933. J M WEBSTER 1.902,205

HANGAR FOR AEROPLANES MID n!!! LIKE Fi1ed March8, 1930 4 Sheets-Sheet 2 INVENTOR ATTORNEY M4lldl 21, 1933. M WEBSTER 1.902,205

HANGAR FOR AEROPLANES AND 'IHE LIKE Filed ldarch 8, 1930 4 Sheets-Sheet 3 f INVENTOR JowexM.%bs/er M ATTORNEY Patented Max. 21, 1933 JAMES K. WIBS'I'EB, O1 NEW YOBK;N. Y.

HANGAR I'OE AROPLAN'ES AN!) TEE zum Appllcation ille:l Intel: 8, 1930. 8erial N0. 434,256.

of as a transport plane. Such aeroplanes are usually 0f the multi-engined monoplane type with large pay load capacities and may be either land planes, sea. planes, flying boats' 0x amphibians. The large wing area required involves a correspondingly large wing span. This, together with the'ir great weight, introduces certain problems into their handling fire protection, and storage at the airport which this invention seeks to solve,

one of the objects being to produce a hangar for this type of plane which will combine a maximum efliciency in the use of storage space, ease in handling during daily operation and a system of salvage for the planes in the event of fire, design'ed to reduce insurance rates by minimizing the fire hazard.

While the hangar structure proper may be of the convkntional type consisting 0f steel columns, roof trusses, roofing, brick side 0 walls, and factory type sash, it has been found that an econom in the weight of the trusses may be efi'ect by sliding the planes into the hangar with tl1e Ion itudinal axis of the fusilage parallel to the c ord members of the roof trusses. This follows from the fact that the length of the fusila e is usually the least overall dimension an also from the fact that the weight and oonsequent cost 0f the roof truss vanes nearly substantially as the square of the span.

Due t0 the fact. that the aeroplanes stored in the hangars have a substantial amount 0f gasoline in their storage reservoirs, and due to the fact that 0il and other inflammable products are almost certain t0 be dripping from various portions 0f the planes fixes which are extremely hazardous occur frequently. The mechanics and other persons working upon or handling the planes use cotton waste for wiping otf the oil and this waste is frequently permitted, thrgu h 041relessness er otherwise, to remain wi in the hangar. The roducts with which the waste is saturated, ing highly volatile, may be i nited b spontaneous combustion to ca.use a.

re whic would, of itself, be inconsequential if it would not spread to the aeroplane. If the aeroplanes take fire, the gas tanks are likely to explode and the resulting fire destroys both the aeroplanes within the hangar and the hangar itself. T0 avoid sukrh coutingencies, elaborate sprin kler systexns have been devised to spray the planes with water or chemicals when fires occur. Due to the size 0f the hnngar, such s rinklei systems re extremely expansive an represent a substantial part of the cost of the hangar. The arrangement, heretofore, of planes within the hau ars has increased substantially the size of t e hangar for storing a given number of planes.

The present invention aims to eliminate or minimize the above difliculties and, at the same time, -'to reduce the size of the hangars and decrease the cost thereof. The above advanta s are achieved in the present embodiment y drastic reduction of the expensive sprinkler systems heretofore utilized, by proper arrangement of the aeroplahes to reduce the size cf the hangar, and by the automatic removal of the planes from the hangar under certain conditions. While the inven tion is purticularly applicable to transport hangars, it will be understo0d that many of its advantages may be utilized otherwise and tha'n the invention is not to be considered as thus limited.

An object of the invention is to reduce the size and cost of aeroplane hangars and particularly hangars for storing transport aeroplanes.

Another object of the invention is to minimize fire hazards in aeroplane hangars and the like.

Another object of the invention is to facilitate storing and removal of large aeroplanes from hangars.

Another object of the invention is to provide means for automatically removing the aeroplanes from a hangar when a, predetermined condition exists within the hangar.

Another object of the invention is to provide automatic means for opening the doors of a hangar so that the aeroplanes therein may be removed when a predetermined coudition exists within the hangar.

A further object of the invention is to reduce the cost 0f aeroplane hangars by reducing the amount of, and in fact eliminating the major part of, the expensive sprinkler systems heretofore used und, at the same time, to decrease the fire hazard.

Other and further objects of the invention will be obvious upon an understanding of the illustrative embodiment about to be described or will be indicated in the appended claims, und various advanta es not referred to herein will occur to one sEilled in the art ;1 pon employrnent of the invention in prac- A preferred embodiment of the invention has been chosen for purposes of illustration and description und is shown in the accompanying drawings, forming a part of the specification, wherein Fig. 1 is a perspective view of a double hangar, the planes of one side being partially removed;

F ig. 2 is a top plan view of one side of the hangar, that is a single hangar, with the roof removed to illustrate the position of the aeroglane s therein, the other side of the hangar eing omitted to avoid duplication;

f1ig. 3 is a sectional view along the line 3-3 0 1g. 2;

F ig. 4 is a diagrammatic view illustrating the power connections for storing und removing the aeroplanes;

Fig. 5 is a side elevational view of the parts shown in Fig. 4;

Fig. 6 is a diagrammatic view illustrating one form of automatic means for removing the aeroplanes when a predetermined condition exists within the hangar;

Fig. 7 is a top plan view of another form of 3001 which may be utilized for the hangar; an

F ig. 8 is a side elevational view of the door shown in Fig. 7.

Referring again to the drawings, und more particularly to Figs. 1 to 3, there is shown a hangar 1 which is particularl adapted f0r large transport aeroplanes, a though many of its features are advantageous in other constructions. The sides 2 und roof 4 of the hangar may be constructed in the usual manner; for example, the sides may be of brick or concrete und the roof may be su ported by a steel truss eonstruction, as in icated.

A detailed description of these parts is not necessary because they are well known und are not a part 0f the present invention. Pairs f ra s 7 and 8 are prcwided adJ ent u d substantially parallel to euch of theside walls 2. Mounted upon euch pair of tracks are suitable trucks, indicabed als 9 011 the tracks 7 und at 10 on the tracks 8. These trucks, 9 and 10 are sufliciently streng to support ransport aeroplanes; preferably, the landing wheels of the aeroplanes are placed 011 one or more trucks restlng upon one pair 0f rails and the tail of the aeroplane 1s permitted t0 rest upon another truck 0n the 0ther pair 0f rails. In this way, simultaneous movement of the trucks on the respective pairs of rails will move the aeroplane out of the hangar or into the hangar.

In order to minimize space and t0 reduce the size 0f the hangar adjacent aeroplanes 11 are mounted with their front portions 0n opposite sides"of the hangar or facing in opposite directions. The purpose 0f positioning the aeroplanes in this manner is to ermit them to dovetail t0gether so that the w1ngs of one plane will extend over the tail of another plane. The wings of the aeroplane are, of course, the widest portion thereoi and by overlapping the wings a substantial saving of space is achieved. lt will be understood that beneficial results could also be attained by mounting one aeroplane on trucks higher than the trucks mounting the other aeroplane, whereby the wings would be overlapped one above another. lt is preferred, however, to arrange the aeroplanes as indicated more partlcularly in Fig. 2 0f the drawings.

A sllitable partition 14 may be provided intermediate the tw0 inner aeroplanes t0 separate them und to divide the hangar into a plurality of compartxnents, illustrated herein a.s four, thereby to prevent a fire in one compartment from spreading to the other. The partition is preferably substantially Z- shaped; that is, it has two transversely extending rortions 15 and 16 connected by a longitudinally extending part 17. Other shapes can, of course, be utilized to achieve the same result. By having a plurality 0f compartments housing the planes, the fire hazard und the insurance rates are reduced materially.

A substantial part of the cost in the transportation of passengers by air is due to f;he salaries er wages 0f the ground crew whxch must be maintained at the hangars for moving the large aeroplanes around und stor1ng them. T he use 0f highly paid aeroplane mechanics for moving ships is n0t only poor economy but also tends to disorganize their work on the necessary repairs always ineident to the operation of a busy transport line. The present invention contemplates the reduction of such crews t0 u minimum by providing u construction which may be operated by one person, either 130 store 0r remove one or more aeroplanes. The present handling 0f planes by crews who push the planes arouud, freqllently strains 0r impairs some part thereof und, hence, increases flying hazards.

The illustrative embodiment provides an apron 18 along which the pairs of tracks 7 und 8 extend. A suitable concrete flooring is provided ad) acent the track so tha.t the tops of the trucks will be flush with the fl00ring (o permit the aeroplanes t0 be taxied of! the apron under their own ower. If desired, tractors may be utilize for this pmpose. Where four aerbplanes are stored in a angle hangar, preferably a door is provided at auch side of the hangar with the apron 18 und cancrete floor 19 extending from euch of the doors. In order 130 avoid duplication in Fig,

2 the apron und its associated arts at the right side of the hangar have n broken away, its construction bein identical with that shown 011 the left side 0 the hangar, including the cables und ower operating mechanism. A description of one sidep df the single hanga.r will, therefore, serve equa lly -Well for the other side und also for the double hangar shown in Fig. 1. At the end of the apron 18, a s'uitable source 0f powe1 such ms a. motqr 22 is provided, which rotates shaft 27 through a sprocket 24 0n the shaft 0f the motor, chain 25, und sprocket 26 onshaft 27. The sha.ft 27 has mounted on each end thereof sproc kets 29 und 30, connected by chainz'a 31 und 32 with sprockets 33 und 34 respectivel 011 shaft 35. sg rocket 33 und 34 aremounte' uponsuita.ble s eeves. 36 und 38, which am! free to rotate about the shaft 35 und hawe integral there-' with drums "39 und 40. Cable8 41 m1 42 a1 e rrxounted on drums 39 und 40 on the ends of shaft 35 und on drums or ulleys 44 and 45 respectiyely, at auch end o? shaft 46.

Cables 41 am operatively connected to the trpcks mounting the aeroplane 11earest the door und am also connected to the trucks upon which the door is mountod. Exe ables 42 are operatively comiected to the trucks mounting the aeroplane agljaoent the partition 14. Suitable bracket-s 52, with apertures 54 therein, am provid ed 011 the trucks throu h Which.the cables pass. Suitable lugs may provided on the cables for engaging these brackets 52.t0 move the trucks in either dime- It willbe understood, however, that any other suitable mea.ns may beemployed for attaching the cables to the trucksfl1dunting the door and-the planes.

The co nnections between the cables und the trucks should be substantially rigidso that the trucks commence t0 move at the same time that the cable s du to ayoid sudden jars. If necessary, a suitable spring mm be mounted between the bracket und the lug-On euch cable to cushion any such shqck.

It will be noted that t he sprocket wheels fo'r driving the cables 41 are propoxtioned t0 move the cgbles at a 'greater speed thdn that of the cables 42. The purpose of,this iS. t0

resyec'tive move the door closing the hangar und the aeroplar'xe adj acent the door a.t a greater speed than the aeroplane adjacent the partition 14. In this way the aeroplanes, when they have reached the apron 18 or have reached their final position, are sepatatedirom euch other substantially so that a fire in one will not endanger the other.

F01 convenience in removal und stomge of the aeroplanes, the present invention coutemplates the rovision of an improved door 60, shown more particularly in F igs. 4 und 5, mounted u n suitable trucks runnixig on the pairs 0 tracks 7 und 8. The door is illustratd diagrummaticall in Fig. 5 as comrising a'member 61, held m upright position y braces 0x t russes 62 mountad upon the trucks erative re;lation to the trucks mounting the door for Inoving the door in the same manner and at the same speed that the outer aeroplane is moved. In this manner, when the motor is started for removing the aeroplanes, the door is automatically moved out W1th the aero laues und at the same speed that the forwar aeroplane is moved.

Any suxtable ineans may be utilized for locking the door in position and for automatically releasing the same. One f0rm 0f device is illustrated diagmmmatically in Fig. 5; which comprisesa latch mex nber 64 pivoted at 65 und normally hooked over the door, as indicated at 66. A suitable e l(ectro-magnet 67, which is connectedby lei1ds 68 directly 'ac'ross the power line for the motor, is adapted to lift the latch rnember 64 und release the door when t-he motot is starlzed andhold the latch' member in inefl'ective posxtion until the motor is stopped. In this' way, the door is -automatically released. und. automatically 1ocked. It will be understood that a.ny num bar of locking mmbers 64 may be utilized to hold the door securely in position.

In Figs. 7 und 8, another form of door is indicated which is a sliding door comprising.

t he sections 70, 71, 72und 73. A suitable cable 74 passes around ulleys 011 these sevoral sections und over t e pulleys 75 und 76 to the 1atter of which a counter-weight 77 is secured. The counter-weight 77 is suflicient to open the, doors when released. A suitable release mech'anism, such as that indicated on for air or gas which have a bleed valve or aperture so that ordinary changes in temperature are automati-cally compensated for, but rapid changes in temperature are communicated to a suitable diaphragm which 0 erates a suit-able electric control. As in icated in Fig. 2, thesev ex;al rservoirs 80 (illustrated as ten in number) are positioned about the hangar so that any substan'tial fire will cause one of these to 1ncrease substantially in temperature. A small pipe or tube 81, which may be encased in a larger pipe 82, connects with each of the five reservoirs 80 on one side of the hangar. A similar tube 83, encased in a larger pipe 84, connects with the five reservoirs on the other side of the hangar. The ends of the tubes 81 and 33 are joined by the encased tubes-79 and 85 which connect' to electfic' releases, 86 and 87 res ectively, as indicated in Figs. 2 and 6. he electric relenses 86 and 87 may be similar to those now on the market. These releases may operate control circuits to operate a. suitable alarm to .dmit water to the sprinkler devices adjacent the doors and to supply power to the motor 22 for automatically opening the hangar doors and removing the aeroplanes. T0 avoid a detailed description of the various parts of the preferred control, a diagrammatic illustration of a control is shown more particularly in Fig. 6. The tube 79, encased in a larger pipe 88, has a bleed aperture 89 which coxh ensates for normal changes in temperature ut is inadequate to relieve abnormal changes. The tube 79 is conn ected to 9. hollow member 90 having a diaphragm 91 therei'n. Press'ures in any one of the several reservoirs 80, caused by' abnormal rates of increase in temperature, aie communicated directly 130 the-diaphragm 91.

A pin 92 is attached to thediaphragm and is free to move with the diaphmgm and is adapt ed to close the relay circuit 94 havi ng a battery, 01' other source of current 95, therein. An increase in pressure in the systuem not relieved by the aperture 89, is communi cated to the diaphragm 91 which forces the pin 92 outwaxdly and causes the bar 96 thereon to close the re lay circuit 94. Closing the relay circuit opera.tes q. relay 97 to connect the main s0urce of power 98 to the motor 22 through an automatic startet 99. This starts the motor and automatically opens the doors of the= hangar and removes the aeroplane's. The closing of the relziy circuit 94 also operat'es the hell 100, or other suitable alarmand open's a suitable ele'zctrically operat'ed water valve,v indicated at=101, to

admit water 130 the pipes 102 having outlets 104 in the floor of the hangar adjacent the dem. Similar pipes may be provided in the ceiling 0f the hangar adjacent the doors. Thwpulpose of these is 150 extinguish any fires in the vicinity of'the doors and to prevent the aeroplanes from beir.g ignited, while passing the vicinitly of such fires during their automatic remova By dragging the plane thxough a delu e or water curta1n, any fire in the plane 1tself is extinguished before leaving the hangar. The cost of thc pipes is relatively small due to the fact that only small parts of the hangar adjacent the doors are piped.

In the operation of the device, the aeroplanes are taxied onto the apron 18, or drawn thereon by means of a suita.ble tractor, and deposited on the trucks as indicated in dotted lines in Fig. 2. Thereafter, the switch 93 may be closed and 9.ny suitable starting device 103 utilized t0 start the motor 22, which rotate3 shaft 27 through sprockets 24 and 26 and chain 25. This, in turn, through the sprockets 29 aind 30 (see Fig. 4) and chains 31 and 32, r'0tates the sprockets 33 and 34 and their correspond- ing drums 39 and 40. The cbles 41 on drums 39 are operatively Connecbed to the trucks supporting the door 60 and the outer aeroplane 11 t0 move them along the tracks 7 and 8 into the hangar, as indicated in full lines in Fig. 2. The dem, when it reaches its closed position, is locked by 'means of the latch 64 sind a suitable automatic mechanism, operated by the door, stops the motor. The cables ate, likewise, Connected t0 the trucks supporting the inneraer0plane to move it into or out of the hangar. In the same manner, the starter 103 may be 0pemted to run the motor ir the opposite direction to ixnlatch the door 60, and to rimve the aeroplafies out onto the apron 18. In such movement, the drums 39 and 40, being of diflerent size, the aeroplanes are separated as indicated in dotted lines in Fig. 2.

In the event of fire in a.ny portion of the hangar, the seVeral reservoirs 80, or other suitable temperature responsive devices or one of them, increase in temperature and releaseair through tubes 79, 81, 83 and 85 into the hollow member agamst the diaghragm 91, which flexes the diaphragm t0 close circuit 94, which operates the relay 97 and the fire alarm hell so thabtlre alarm is given and the circuit is automatically closed to sta rt the motor 22 and the aeroplanes are remo'ved and separated from the hangar. In addition, the relay circuit 94 operates an electriclly controlled wate r valve to sup'nly water to the pipes 102 to spray the p0rt1ons of the hangar adjacent the doors.

When the door in Figs. 7 and 8 is utilized, the several sections 70, 71, 72 and 73 are permitted to open fully prior to substantial movement 0f the aemplanes toward them. The aeroplanes, in passing out of t he hangax", move through the automatic spnnklar system 104, which, in turn, puts ont any fire in the vicinity of the door so that, m the event the fire starte'd et the door, it would be extinguishedbefore the aeroplanes have rea ched 1t.

It will be seen that the above invention pnevides a hanger of low construction cost wherein the aeroplanes may be compactly arranged und fire hazards minimi2ed. A single person may either store the aeroplanes or re'- move them fxom the hangar, which reduces substantially t-he ground crew ordinarily required. In case of fire, the 'aer0planes are not only automaticaily removed from the hangar but are separated from each other so that when a fire tarts in one plane it will not afl'ect either tha other planes or the hangar. If a fire starts in the hangar itself, the aeroplanes are removed before any substantial damage is done und the han ar, being quite large and being construct ed 0 substantially fire-proof material, is not likely to be damaged. On the other band, if one of the aeroPlanes were to burn in the hangar, it would undoubtedly impair t-he structure and do considerable dain ge. The hangar and its.

associated parts opex"te automat1cally both to lock the door and releasIe it, und likewise to open the doorwhen the aeroplanes are removed. A single aeroplane maybe removed 3y means of a suitable cluteh which disengages the drnm operating the cable attaciied t0 the trucks und6r the inner plane. The partition extending centrally of the hangar does not take up additional space und further reduces the fire hazard. The c0nstructiou is simple in operation and is not likely t0 get out cf order and occasion diificnlties.

It is also evident that, by means of intraducing the planes into the hangar -as descxibed, certain economies in the use of floor space may berealized by placing the wings und tail skids of adjoning Ianes at opposite sides of the hangar, as s own in Fig. 2. As various changes may be made in the fbrm, constructiou and arrangement of partS without departing from the spirit und sco advantages, it is to be understood that all matter herein is to be interpretedas illustrative und not in a limiting sense.

Hving thus described my invention, I claim:

1. In an aeroplan( hangar, the combination of means for movably mounting aeroplanes, a source of poweroperatively connected to said means, und temperature responsive devioes operatively connected t0 said source of power;

to remove said aeroplanes from the hangar.

2. In an aeroplane hangar, the combniation of a source of power operatively connected to an aeroplane in said hangar, and temperature responsive devices fc r actuating said source cf power when a predetermined temperature has been r ezched to remove said aeroplane from said hangar.

3. In an aeroplane hangar, the combination of a Source of power operatively connected to an aeropiane in said hangar und adapted to remove said aeroplane from said hangar, und

temperature responsive devioes adapted 'to aqtuate seid souroe of power to remove the aeroplane when the rate of increase in temerature in a portion of said hangar increases yond a predetermined -maximum. 4.. In an aeropiam: hangar, the combination of trucks supporting aeroplanes, means operative connected to said trucks to remove said aerop anes from thehangar, means for holdi1ig the dem -to said hangar inhlosed positi0n, and automatic devices for relea'sing said dem when said first mentioned means is operated to remove an aeroplane f-rom said hangar.

5. In an aeroplane hangar having a door,

' the corfibination of trucks adapted to support rate the aeiofflanes, there y to prevent a fire in one plane from damaging another plane. 7. In an aeroplane hangar, the combination of a door mounted upon trucks, a sour ce of ower connected to said door, sind temperature responsifie devices adapted to 'render said source 0f Power efi'ective upon sai door t0 open said'door when a predetermine temperature condition exists in the hangar.

8. In an aeroplane han'gar, the'combination of a door, a source of pbwer connected to said door, and tem rature responsive devioes adapted to ren er saidsour'ce ofpower efl'tactive upon said dem to open said door of the mventxon und wxthout sacnficxng lts.

when a predetermiiud temperature condition exists in the hangat.

9. In an aeropiane hangar, the combinati on o'f a. air of tracks, trucks mounted upon said tracYxs, ce rtain of said. trucks bei ng adapted to support' an aeroplane, a door mounted upon other trucks, cables operatively connected to said' trucks, und means for moving said cables at difl'erenbrates Of speed to separate certain of said t'rucks from other trucks.

10. In an aeroplane hangar, the combination of a plurality of compartments, a. parti ti0n separating oertain of said compartments, said partition being shaped to pe'ermit aeroplanesoh 'the respective sides thereof to be dovetailed together to decrease the spac.e

required,means operatively connected to said aeroplanes for removing them fro m sa'1d hangar, und souroe of ower for operating said means to withdraw said aeroplanes from the opposite ends cf seid hangar.

11. In an aeroplane hangar, the combination of a pair of aeroplanes in seid hangar, devices opersg tiyely connected to said aeroplanes fdr remoihg them from seid hngar, said devices being adapted to move the aeroplanes in opposxte directions, a source of power for operating said means, und temperature respqnsive devices .for renderin said source of Power eflective upon sai means. 1

12. In an aerop lane hangar, the oombination of trucks for mounting aeroplanes, means operatively connected to said trucks to remove said trucks from seid hangar, said 'means being adapted to move certain of said trucks in one dinction' und ther of seid trucks in an opposite direction to separate said aeroplanes, und te'mperature responsive devices for actuating seid means to remove said aeroplanes from the hangar whena predetermined temperature condition exists within the hangar.

-'13. In an aeroplane 'hangar, the combination of a plurahty 0f trucks for mounting aeroplanes, means operativ(aly connected to seid trucks to remove said trucks und the aeroplanes from said hangar, temperature responsive devices adapted to release the doors t0 said hangar und to operate said rneans to remove said trucks and the a eroplanes from the hangar when a predetermined temperature exists within the hangar.

14. In an aeroplane hanga.r, the combination of a pluralit cf aeroplane's within the hangar dovetailec?with respect to eaeh 'other to decnease the storage space required, trucks for mounting said aeroplanes, a artition extending between oertain of said aeroplanes to separate them, devices opemtively connected to sgzid trucks for removing them in a direction away from said Partition to remove the y aerop}anes from the hangar, tem erature responswe devices f or opemng the ors of sai d hangar und operating Sand means to remove the trucks and aeroplanes from the hangar when a predetermined temperature condit1on exists therein.

15. In a. device of the dass described, the combination of 8, door, movable trucks for mounting said door, und automatic means for operating seid dem.

16. In an aeroplane hanger, the combination of sprinkler devices adjacent the door of said hanger, temperature responsive devices adapted to automaticallycausa the removal of the planes from the hangar{ und. means for cusing said sprinkler devices to spray the pqrtion f the hangar adjacent the door prior to and during the:passage' of im aeroplane therethrough.

17. In anaeroplane hangfisr, the combination of a w'ater curtain ndjat:ent a door cf the hangar, and tem natura responsive de water curtain to spray vices f or causin sei the portion of t e hngar adj a.cent the door for operating said devices to open seid door und to remove the aeroplanes from the hangar as a unit.

19. In an aeroplzlne hangar, the combination of a plurality of con'xpartments, a Z- shaped artition separating seid compart-' ments to permit aeroplimes on the res'pective sides thereof to be d0vetailedtogether und independent means for mving said pla'nes from euch of said compartments when a. predebermined condition existg within seid compartments.

20. In a device of the dass described, the combination of a hangar, a plurality of trucks adapted to support flying machines, seid machines being dovetailed to decriaase the space required for stgring said machines, und devices for removi'ng said machines from said hangmr und separating them a predetermined distance while moving from said hangar. 1

21. In an aeroplane hangar, the combination of a runway below the level of the floor of the hangar, trucks mounted in said runway provided with s, platform substantially at the level of the floor. of the hangar, adapted to receive und sup ort aeroplanes, and a mechanism operative y connected to sai d trucks to remove said aeroplanes'from said hangar.

22. In an aeroplane hangar, the cdmbination of a door at the side of the hangar, trucks for mounting a1roplanes in staggered relation so that the Wings of adja cent lanes overlap' euch other und thereby reduce the space required for storing the planes, -sa'id trucks being adapted to move said lanes sideways through said door, a.nd devices for removin said trucks und lanes mounted thereon %rom the hangaran I to separate the adj acent planes, whereby seid plane5 may be moved on und ofl' the trucks transversdy to the direction in which -they .are moved through the door after they are rernoved. from the hanga.r.

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