US1352606A - Multiple sliding door for use in airplane-hangars or other large openings - Google Patents

Description

Y H. A. JOHNSON. MULTIPLE SLIDING DOOR FOR USEIN AIRPLANE HANG'ARS 0R OTHER LARGE OPENINGS.

H. A. JOHNSON. MULTIPLE SLIDING DOOR FOR USE IN AIRPLANE HAN-GARS 0R OTHER LARGE OPENINOS.

APPLICATION FILED .IULY` 11,1919.

Patnted Sept. 1'4, 1920.

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Patented sept. 14,1920.`

H. A. JOHNSON.

[LED JULY 11.1919.

APPLICATION MULTIPLE SLIDING DOOR-FOR USE IN AIRPLANE HANGARS OR OTHER LARGE OPENINGS.

l H. A. JOHNSON. .MULTIPLE SLIDING DOOR FOR USE IN AIRPLANE HA'NGARS OR OTHER LARGE OPENINGS.

Patented sept. 14,1920.

APPLICATION FILED JULY III I9I9. 1,352,606,

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H. A. JOHNSON. MULTIPLE SLIDING DOOR FOR USE IN AIRPLANE HANGARS 0R OTHER LARGE OPENINGS.

APPLICATION FILED JULY II. I9l9.

Patented Sept. 14,1920.

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Inova/nto@ H. A. JOHNSON. MULTIPLE SLIDLNG DOOR FOR USE IN AIRPLANE HANGARS 0R OTHER LARGE OPENLNGS.

APPLICATION FILED J'ULY Il, i919.

Patented'Sept. M, 1920.

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H. A. JOHNSON. MULTIPLE SLIDING DOOR FOR USE IN AIRPLANE HANQARS 0R OTHER LARGE OPENINGS.

AHPLICATION FILED JULY 11,1919.

Patented Sept. 14, 1920.

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H. A. JOHNSON. MULTIPLE SLIDING DOOR FOR USE IAN AIRPLANE HANGARS OR OTHER LARGE OPENINGS.

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www g f m4@ j SHO/www H. A. JOHNSON. MULTIPLE SLLDLNG DOOR FoR USE IN AIRPLANE HANG/LRS 0R OTHER LARGE OPENINGS.

Patented sept. 14., 1920.

` APPLICATION FILED JULY Il, 1919.

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11.11. JOHNSON. MULTIPLE SLIDING DOOR FDH USE IN AIRPLANE HANGARS 0R OTHER LARGE'OPENINGS.

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' mprovements in UNITED' STATES PATENT OFFICE.

HOWAHD .L JOHNSON, or NO'HFOLK, VIRGINIA.

MULTIPLE sLiDiNe Doon. FOB, use 1N AinPLANH-HANGAHS on. OTHER; Lanai: f OPENINGS. i

Specification of Letters Patent. Patented Sept. `14, 1920.

Applicatie nea my ii, i919. serial No. 310,000.

To all whom it' may concern:

Be it'known that I, HOWARD a citizen of the 'United States, at Norfolk, Norfolk County, `State of Virinia, have invented certain new and useful Multiple ySliding Doors for Use in Airplane-Hangars or other Large Openings, of whichthe following is aspeci- A.V JoHNsON,

. ication..

with "this invention;

' vention are to provide The present invention relates, to "sliding doors for large openings and more particularly to such doors for aircraft hangars.

flhefopening in a hangar sions, and' the problem op providing a suitable door for such an 'opening presents many diiiiculties.' 'The door being of large dimensions is very heavy and consequently requires" considerable' power to open and close the same." 1

The principal objects ofthe present ina suitable door which may be opened and closed by power means;

to provide such a door which is supported independently of the building so that the weightl of. the door does not 'stress any of the members-of the rooflof the building, for

-to provide a door which whenopened may be stored in-a position parallel4 example with the side. of the 'bui-ldingyto provide a simple and -dependable power mechanism for opening and closing the door; and generallyftc improve'the structure of this class of doors. novelty will fbe apparent `from the descripin which: v i

Figure 1 is 'a horizontalsectional view in outlines through the arrangement of the doors showing `one door `Open and theiotherA closed; J

Fig'.j 2fis a front elevationto al larger a door: constructed in accordancel 'i "passage-of scale of with thepresentinvention; i

Fig.` 3 lis yay horizontal*A sectional viewk of a hangar equipped with doors'inv accordance Fig. 4 isa sectional view taken substan` tiallyvontlieline 4:4-4 of F1g.2;= =n Fig. 5 is anrelevatiomofxthe .two small sections ofthe door as viewed from the in-f `side thereof.; fif Y.

and residing i,

for the passage of large dimen-l Other objects and features of tially on the ,line tion taken in connection with the drawings a= hangar illustrating `hangar 20 having,` o

v I Fig. 6 is a top-plan view of the sections of the door shown inFigj. 5,;

Fig. 7 is a sectional view taken substantial-ly 4on the line 7-7 of Fig. 3, the door haviitig been opened substantially to this pom Fig. 8 is aside elevation of the truck and cable gripping mechanism .shown in Fig. 7 Fig. 9 is a sectional View of the arcuate section of the track'taken substantially on the line 9-9 of Fig; 8:

Fig. 10 is a sectional View ytaken' substanl tially on the line 10--10 of Fig. 2 illustrating the structure forguiding the top of the door; l

- Fig. 11 is an elevation of the parts shown in ,Fig 10; y

. Fig. 12 is a view of a detail showing'in elevation one Of the door supporting trucks and its connection with the bottom hinge between a pair of the .door sections;

Fig.V 13 is 'a sectional. view taken on the` line 13-13 of Fig. 12;

Figs.i14 and 15 are sectional views simiv` on its pivot to a position against the adjoining section; Fig. 16 illustrating the polar t0 Fig. 1* illustrating modified arrangef sitions ofthe parts' before the section is swung around, and Fig".` 17 afterward;

Fig.l 1% is a sectional view taken substan- '18-18 of Fig. 17 ;y Fig. 19is a sectional view taken substantially on the line 19-19 of Fig. 20 is an elevation in detail, of-a por'- tion of the track. i i y Referring toig. A1 itswill, be seen that the invention is shown in. connection withfa enings21 and `22 in' K. b an airplane ythese openings-are' 1 necessarily of large size. .For example, the

its opposite sides. nfforderto allow the openings might be. feet long by 26` feet high,

Fig. 17; and

although the invention of course isf`A not limited to doors of any particular dimensions.V Furthermore, although a buildf ing having openings at its opposite sides isv illustrated, it is Obvious lthat the. invention ,n y. lis equally applicable to a hangarhaving a.

siigle opening only. As shown in Fig. 1

the opening 21,is closed by adoor D and,j

the opening 22 is adapted to beblosed Vby a door D', this latter door being shown in open position and disposed in a position of the constructions only. Referring to Figs. 1 and 3 it will be seen that the track at the bottom of the door comprises a straightsection 23 disposed substantially parallel with the length of the opening.

The track also includes angle to the section 23, preferably arranged substantially parallel with one side of the hangar. These two sections ofv track 23,

`and 24 are connected by an arcuate section '25. Preferably,'the sections 23 and 24 are in the form of tlie usual T-shaped railsv while the arcuate section'25 consists of a flat baseV 26 having an upstanding portion 27 substantially rectangular Y-in cross section. 'The outer side of the portion 27 isl provided with a guide 28 and the base is provided with a guide 29, for a purpose described hereinafter.

The door consists of a plurality of like sections 30. In the hangar shown kin-Fig. 1

i the depth of the building is less than the opening ofthe hangar, and hence vin order to store-the door at right anglesA to the door opening the end portion of the door adjacentthe arcuate part o f the track, 25

when the door is closed has two smaller sections 31 and 32, the section 32 being hinged to swing around against the section L31. The door is supported on a pluralityof wheeled trucks 33 which run on the tracks, and power means is provided to effect the movement of the door. As shown in Fig.

v 2 there is no truck underl the left hand `end of the small section 32, in order to permit the swinging mentioned above.

is`closed the section 32 occupies the posi'- tion shown at the bottom of Fig. l, that is, a position in continuation ofthe track For the purpose of operating the door a cable 34 is provided. One end of this cable is secured to a drum 35 carried by the upper structure of the `building at the rightv a section 24 at an truck 33 by the Further-v more, in the present instance when the door described hereinafter and illus-'- hand end of the bearings so that'the tension of the cable may be kept'at the properv amount.v From the pulley 37 the cable passes to a pulley 39 and thence to a guide pulley 40which directs the cable to the drum 35,'where it is secured to the drum opposite the first mentioned end. Consequentl when the drum 35 is rotated oneend o the cable is woundf'up while the other end ate section 25 of the track, an endless chainl 43 is disposed to pass around sprocket wheels 44 at the ends of the curved section 25, One limb of this chain is disposed between the cable and the exterior surface of the track 25, the other limb extending in a substantially straight lineI betweenI the wheels 44. The guides 28 and 29 on the track section 25, previously mentioned, act to hold theV chainin position. Thus, when the cable moves it willbear against the curved limb of the chain and the chain will move therewith, thereby carrying the cable around the curved section 25 of without any wear on the cable. In order to operate the door from the cable, a cable gripping device 45 is provided at the right end of the door, as viewed in Fig. 2. The structure of this device is shown more in detail in Figs. 7 and 8. It may comprise a plate 46 secured toi the .side of the end bolts 47. An arm 48 is -hinged to theplate 46 as at 49 and the cable iscut and the ends secured to the lower end of arm 48 as at 50 and 51; shown in Fig. 20, theendof the T rails 23 and .24 have their webs and lower flanges cut away, as at 23a for the sprockets 4 4. The free end of the rail rests on a seat 25 in the end of the curved track section 25.

Preferably the door sections include a rame consistin of vertical channels `52 and 53 connected at their tops by a channel 54. As shown in Fig. 4 the lower ends of the vertical channels are preferably connected by an angle iron 55. The `space within the'frame is closed in any suitable manner as by the slats 56. As shown in Fig. 5, preferably these slats do not extend continuously throughout the height of( the door but are made in sections, the sections u is simulta-4 neously'unwound. Suitable mechanism 41` drum 35.

the track` As s of the op- L bein securedbin position b the horizontal -rein orcing members' 57. n order to rein.

force the frame, corner plates 58 are provided on the inside of-thedoo'rand corner plates 59 at the top of the sections on thev outside of the door. k y

The sections 3()v are pivotally connected n by hingesl60 disposed near the bottom on the inside .of the .door `as shown in-Figs. 5, 12 and 13.- Thepivot pins61 for these hinges" also form a pivotal connection be-v.

' tween the trucks 33 and the door sections.'

As' shown in Fig. 12 4the pin 61 vat -its lower end is formed with the reducedportion 62 through a small4 angle so that the flanges of .the channels willL not interfere. Only a slight relative swinging is necessary to be provided for as .the turning occurs only when the door-sections are travelingon the curved track 25.

. The upper ends of the dofor sections 'are connected by the hin e connection 65, pivot i pin 66 of which proJects above the topv of the door and carries roller 67 disposed bey 'tween the flanges of the channel iron 68 secured to the underside of a irdermernber 69 of the building. An anti ricton ball or` roller is disposed-in `the upper end of the pivotpin66 to reduce frictionin case the pin strikes the web of the channel. The axis ofthe'pivot pin is ydisposed .in alinement With'the axis of the pivot pin or` the hinge at the bottom of the door connecting the corresponding sections. 68 thus constitutes a-guideway for the' top ofthe door and this guideway is arranged parallel with the track at'the bottom of the door. It is observed that the entire weight of tliedoor isjcarried on the tracks and the girder 69 is free from all weight of the door. his is. an important feature for the reason be-considerably increased if it carried the verv heavy door of the hangar.

o open one'or` the doors constructed in y accordance with this' invention, the section 32 at one end thereof is swung aroun on its hinges71 to a position'flatagainst the section 3.1. The switch 42 is then turned toeffect rotation of the drum 35 thus operating the cable vwhich through the gripping device will move the door in an opening direction and this motion will continue until'y the door is rdisposed on the section 24 of the track in aposition parallel with the side of the hangar. One of the doors in this open position is shown at D in Fig. 1. To close the door the drum 35 is rotated in the opposite direction which through the cable 34 "arm a tie ro secured to the arm adjacent the top of the- The channel returns-the door to its closed position. It

v,will be observed, as the cable gripping de- Vice 45 is .disposed at'the right end of the door as viewed in Fig. 2, the cable does' not need to extend along the entire length of the section 240i' the track thus permitting the guide pulley 37 to vbe disposed adjacent the end of the curved track 25. Of course this arrangement ofl the cable and pulleys might be modified but the disposition shown is referred. I n certain cases 1t 1s desirable to provide means for automatically swinging the section 32 on its ivot around against the sec- `tionQ31 of the oor, and in Figs. 16to 19 inclusive a device for accomplishing this puin' pose isillustrated.' As shown in igs. 5 and 6'the end of the section -32 near the 'top thereof isprovided with a pin 72 offset inwardly and with a roller -73, the latter being provided to guide the end of the section 32 past the columns of the building, such as illustrated at 74". As the door is opened and the section 32 travels along thetrack 24 at the side of Nthe buildinf, tlie pin 72 enters a circular cam oove` 13 carried by a plate -74 mounted at the free Iend of an arm 75 pivotally secured lby means of a bolt 76 to the top of thetop track or channel 68.v In order to prevent sagging of this 77 has one end pivotally free end thereof, and the other end ofthe tie rod ispivotally secured to an eye bolt l78 carried by one ofthe roof purlins 79. The

Apivotal connection 78 is disposed vertically `track 73 will be properly ositioned for the entrance of the pin 72, a orce is applied to the arm tohold it against'said stop. As shown for this purpose a weight 82 isse-` Icured to a flexible connector l83 which passes that the size4 of the girder 69 would have to around a pulley 84 and is secured to the arm as at 85. The pulley 84' is carried on a bar86 pivotally supported at 87. Thus the weight 82 acting through the connector 83 tends to hold the arm against the stop l80.-

In the operation of this device, when the door isv moved-in the opening direction, the pin 72 enters the cam groove or track 73, and as the door continues its opening movement said pin travels in s'aidtrack, the arm 75 simultaneously. swinging about'its `pivot substantially 180 until the door is guided positively and continuously to the position illustrated in Fig. 17. In order that the section 32 ofthe door will beparallel -with '.rangements are illustrated in which ,the

straight section of the .track is somewhat greater than thelength of the opening of the door. Thus in Fig. 14 the opening 22 is closed by the sections 30i of the door and one section 30b is on the curved section of the track. As the end ofthe section 30" is adjacent the end of the straight section 24 ofv the track the cable attaching arm a may be disposed atthis end, thus avoiding the necessity for guiding the cable around the curved section of the track.`V Thus a pulley 100 is disposed at the end of the curved section of the track, and the cable 34a from the motor passes around the guide pulley 101, thence along the side of the track 24 to the pulley 100, thence back to a guide pulley 102 and to the drum of the Aoperating apparatus. Again, if the opening 22a of the door is less than the straight section 23 of the track,' as described in connection with Fig. 4, the cable may, if desired, be disposed in connection with the section 23 of the track, this arrangement being illustrated in Fig..15. In said figure the door is shown in` open position, the end section 30b being on the curved section of the track. The cable 34b for opf erating the door passes from the 'hoisting apparatus to a guide pulley 103, thence along the side of the track to a pulley 104 disposed at the end of the straight section 23.

From the pulley 104the cable passes back to a guide 105 andtlienceto the hoisting apparatus. The cable attaching argn 45h is secured to the end of the section 30Ir of the door.

Although a specific embodiment of the yinvention has been described in detail it. is

to be understoodv that it includes changes and modifications which comewithin the scope of the appended claims.

Havingv thus described the invention what is claimed as newIand desired to be'secured by Letters Patent is:

1. A flexible sliding door, comprising sections hinged together vertically, a supportand upon which the door travels and having a curved portion, guiding means for the top of the door, said rail being located in a depression in the floor of the building to which the door is applied, a flexible cable for operating said door, located in said depression, friction reducing means for guiding said cable along said rail, and means for operating said cable to 4open and close said door.

2. A flexible slidingl door, comprising a supporting rail having two sections at an angle to each other and a curved connecting portion, a cable, means guiding the cable for movement' parallel to the track, including an endless-chain, a part of which is guide parallel to said curved portion of the rail,

.the cable bearing against the outer side of said part-of the chain- 3. `A flexible sliding door, comprising a supporting rail having two sections at an angle to each other and a 'curved connecting portion, a'cable, means guiding the cable for. cmovement parallel to the track, including a wheel at each end of the curved portion of the rail, .an endless-chain passing around said kwheels and arranged to travel on the outside of said curved portion against which the cable bears as it passes said curved portio'n.'

4. A fiexible sliding door, comprising a supporting rail having two sections at an angle to each other and having a curved connecting portion, a cable, means for guiding' the cable for movement parallel to said rail said lmeans comprising a'slidable member movable with said cable and located between said cable and the curved portionof said rail and bearing against the latter,

5. A iieXible sliding door lcomprising a depressed supporting rail havin tions at an angle to each other an having a Icurved connecting portion, a movable cable disposed parallel to andalong said depressed two secrail, and friction reducing bearing means y for the cable adapted to travel between the.

an end section hinged position adjacent its spring means tending to hold said end section in alinement with said door, rolling means supporting said door, andI means, acting positively to swing said end section substantially 180 on its hinges,

'as the door is moved longitudinally.

comprising a` 7. A flexible 'sliding door hinged end section adapted to swing about the edge ofthe adjacent 'section and a continuous guide acting positively section substantially 180O on its hinges as the door is opened and closed.

8. A fieXible sliding door comprising an end section hinged to swing about the edge of the adjacent section .to a position facing tlie said adjacent section and means acting positively to swing said end section on its hinges substantially 180O as the door is opened and closed, said means including a pin on the end section and a member having door comprisingver-J to swing saidl a cam groove to receive and guide said pin i during the Swinging movement of said end Section.

9. A exible sliding'door comprising an end section hinged to swing about the edge 5 of an adjacent section to a position facing Said adjacent Section and means acting positively to swing said end section substantially 180o on its hinges as the door is opened and closed, said means-including a pin on the end section, and a pivoted member having a 10 semi-eircuhur cam groove therein adapted to guide the pin during the swinging movement of said end section.

In testimony whereof I affix my Signature.

HGWARD A. JOHNSON.

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