US2240942A - Revolving door - Google Patents

Description

May 6, A1941.' l E. PEREMI Erm.

REVOLVING DOOR I Filed June 4, 1958 3 Sheets-Sheet l Will/lill;

W5 xNvEN-roRs,

Edmund. Pere,

aw v ATTORNEYS May 6, 1941. E. PEREMI Erm..

REVOLVING DOOR Filed June 4, 1958 s sheets-Sheet 2 BY Wm v 770622:

ATTORNEYS May 6, 19417 E, PEREMI. ETAL 2,240,942

REvoLvING DOOR Filed June 4, 1938 I 5 Sheets-Sheet 3 ATTORNEYS Patented May 6, l1941 REvoLvING Doon Y Edmund Pererni, Manhasset, and yCharles Kish, Elmhurst, N'. Y., assignors to General Bronze- OorporatiomLongvIsland City, N. Y., a corporation of New York Appia-sem am 4, 193s, serial No. 211,716..

(o1. vte- 13)Y -`is claims.

This invention relates to revolvinggdoorsy in which a plurality ofv leaves are mounted4 to project radially from a central rotary columrror support.l In the normal operation of the door, the leaves are Xed with relation to thecentral column and rotate with'it; but they are adapted to fold in response to abnormal pressure occurring under panic conditions, so as to make an open passage through the doorway. The leaves may also be folded and moved to one side withY the central column, when it is desired to clear the doorway for any purpose.

For holding the door leaves firmly in their radial positions while permitting them to fold or collapsey under abnormal pressure, spring detent means are used, and it is an object ofthe invention,` to improve the construction of such spring detent means. More specifically, itv is an objectl to provide spring `detent Vmeans which will assist in holding the leaves so that their inner edges will nt closely against the column, instead of tending to push the leaves away from the column, as in the` constructions at present in'use.

It is a further object of the invention to provide means for unlocking theleaves by forcibly retracting the detent Vbolts against the tension of the bolt-holding springs when the door leaves are to Vbe folded manually. s

Further objects of the invention are to pro- Vide, improvements in the pivotal mounting of the leaves; to provide an improved construction of casing of the column; and to improve other details of the construction, as will vhereinafter more fully appear. Y

` In the drawings forming a part of this speciiication:

Figure lis a view in front elevation of a door mounted in a housing shown in vertical section;

Figure 2 is a horizontal section through the door column and its casing and part of one of the door leaves;

Figure 311s a View, partly in elevation, and partly in vertical section,`showing part of the door column and the upper disc and hanger, and portions of the leaves;

Figure 4 is a vertical section on line 4-4 of Figure 6 showinglthe lower part of one of the leaves;

Figure 5 is a horizontal section similar to Figure `2 showing a modied form of column enclosing casing;

`Figure 6 isa View, partly in elevation and partly in verticalsection,.similar to Figure 3, but showing Lthe disc and hangers at the bottom of the door. i c l y.

Figurel is a-view in horizontal section taken on line 'l-l of Figure 3, thefolded position ofthe leaves being shown in dottedlines.

Figure is a horizontal sectional View looking upwardly,-taken online 8-8 'of Figure. Y

Figure-9 is ahorizontal section taken on line 9 4!v fof` Figure @showing the door leaves folded. Referring to the drawings in detail, the door comprises-a series of leaves or wings l2 mounted upon a centralfrotary column or support I3, to turn-within a doorway or casing I4 of usual construction. Asis customary, the supporting column |3 may have a pivotal bearing (not shown) in thetfloor of the doorway and its upper end `may be suspended bya trolley and track (not shown) aloovethe ceiling of the doorway. When the door is to be moved to one side of the doorway, thepivotal bearing at the bottom is disconnected, the leaves are folded and the leaves and column moved-to one side by forcing the trolley along thrtrack, `all in a well understood manner, not necessary to illustrate or further describe.

The central supporting column comprises a strong and rigid shaft which may conveniently consist cfa' steel tube I. Mounted on this tube, near the top and bottom, are means for supporting the Vdoor vleaves or wings, such means being shown as-comprising an upper disc El' and a lowerA disc I8` which are preferably similar in construction, one facing upwardly and the other downwardly. The exposed portion ofthe central column between the'discs is preferably provided withatubular sheathgor casing which is recessed-Y or otherwise-'formed so as to provide a tight connection between the column and the inner edges of the door leaves, while at the same timenot interfering with the folding of the leaves. Preferably thisV sheath or casing is made of a non-corrosivemetal. One form'of this casing is illustrated in Figure 2 and comprises two similarinterlocked shapes which may desirably be formedof extruded bronze or aluminum, or other non-corrosive i metal which can be extruded. In the construction shown, the casing comprisesfour projecting ribs 2@ between which arecurved` recesses 2I adapted to receive the inner edgesof the wings l2 which are curved as shown at 22. Each of the similar halves of the casing comprise a complete rib portion 20 and a partialrib 23 having a dovetailed groove 24 extending longitudinally thereof inside of said partial rib. Each of-the casing sectionsl also has a'longitudinally extending inner rib portion 25 having diverginganges 26 thereon which constitute a dove-tail adapted to interlock with the groove 24 when the two portions of the casing are telescoped longitudinally before the door is erected. With this construction it is seen that a symmetrical and finished casing is provided by the use of two identical extruded sections.

In instances where it is desired to use a casing for the central column made out of sheet metal or metal which cannot be extruded, such for instance as stainless steel, the construction shown in Figure may be used. In this construction the casing is made out of a plurality of Y similar rolled shapes, four being shown. Each of these shapes comprises a hollow rib portion 3|] having two flanges 3| and 32 arranged at right angles and adapted to fit adjacent to the shaft I6. Preferably all of the sheet metal sections are identical, the flange 3| at one side underlying the flange 32 of the adjacent rib section, and the flange 32 at the opposite side of the rst rib section overlying the flange 3| of the adjacent rib section on that side. The flanges may be s ecuredtogether by welding or byvscrews or other holding devices (not shown).

The leaves may be pivotally mounted on the discs or supporting members |1 and |8 in any suitable manner. In the preferred construction illustrated we have shown an arrangement similar to that disclosed in our United States Patent No. 1,983,395, dated December 4, 1934, the present invention, however, embodying certain improvements in detail over the pivotal supporting means shown in said patent. The discs |1 and I8 are similar, except reversed in position on the shaft. The discs are secured to the shaft in any suitable manner, as by means of the screws 40. Each disc is provided in one face with an annular outer groove 42 and a four lobed or clover leaf groove 43. The door leaves are each provided with upper and lower hangers 44, each hanger carrying an outer pin 45 provided with an arcuate shoe or block 4G pivotally mounted thereon and arranged to slide in the annular groove 42. Each hanger is alsoV provided with an inner pin 48 carrying an anti-friction roller 49 arranged to travel '1n the lobed groove 43. The lobed groove 43 is provided with four equally spaced sockets or recesses 58 adapted to receive the rollers 49 When the leaves are in radial position. The roller 49 travels outwardly from the socket through one or the other of the branching walls of the groove leading from the socket when a leaf isfully swung to the right or left, respectively. Where the groove portions forming the sides of a lobe come together at the apex of the lobe they may merge completely into a single `apex as shown in our prior patent referred to, but preferably the groove portions do not completely merge at the apex, but each groove portion terminates in a shallow seat 55, these two seats being separated by an inwardly projecting cusp 55. When a leaf is completely folded its roller 49 moves into one of these seats 55, lthe other seat 55 serving to receive the roller on the adjacent door leaf in the event that the leavesare folded in theopposite direction. Each of the discs s provided with guide pins 68, each carrying an antifriction roller 6|, and each leaf hanger -is provided with a hear-t shaped cam 62 adapted to maintain contact with a roller 6| while the leaves are in radial position and during the first part of the folding movement of the leaf. The leaf hangers are also provided with transverse surfaces 65 adapted to contact the rollers 6| when the leaves are in radial position. When a leaf is folded from the radial position shown at Figure 8, the shoe 46 leaf is one of the outer leaves and moves to the fully folded position, as shown by theouter leaves in Figure 9, the shoe 45 has moved further around the annular groove, the cam 52 has moved entirely out of contact with the roller 6|' and the roller 49 on the pin 48 has moved out through one of the branches of one of the lobes and into the socket 55 at the end of such branch. All of the leaves are capable of similar movements depending upon the position of the door when collapsed, and when the leaves are folded they are preferably parallel or substantially parallel,

as shown in Figure 9. The operation of the parts so far described is very similar to that disclosed in our former patent.

In order to permit the leaves to fold to the position of the outer leaves shown in Figure 9, the recesses |10 in the hangers which receive the discs |1 and I8 are made suiciently deep so that the ends of the recesses will not contact the edges of the ldiscs until the folding movement has taken place. In order to close the outer portions of these recesses When the leaves are in radial position so as to prevent the passage of drafts, exible wind stops |1|, preferably formed of rubber or the like are mounted on the end walls of the recesses |10 by means of clamping blocks |12 or in any suitable manner.

For holding the door leaves in radial position during normal use, While at the same time permitting them to yield under excessive pressure, spring pressed bolts are used, each leaf being preferably provided with bolts near its upper and lower edges adapted to engage recesses in lugs formed on the upper and lower ydiscs respectively. The bolts are mounted in recesses in the hangers near the central column of the door and adjacent to the discs. The bolts are all similar yand are designated by the numeral 10, and each bolt has a wedge shaped end 1| adapted to t in a wedge shaped groove 12 formed in a block 13 preferably of hardened steel which is set in a recess in a lug 14 at the edge of the disc. There are four lugs and blocks on each disc corresponding to the radial positions of the leaves. The body of the bolt is provided with a shoulder 16 (see Fig. '7) which engages a shoulder in the bolt receiving recess and serves to limit the outward movement of the bolt. The rear end of the lbolt is hollow, as shown at 13, and receives a compression spring 19. 'Ihe inner end of the compression spring bears against a screw plug 88 which screws in the threaded inner portion of the recess in the hanger and constitutes an adjustable abutment for the spring. The tension on the spring is so set as to permit the release of the leaves under a predetermined pressure greater than the normal operating pressure or any expected wind pressure to which the door leaf is subjected. The panic release pressure is usually determined by ordinance in the cities Where the door may be used. The resistance of the leaves to folding may also be affected by choosing a proper angle for the ends of the bolts and for rthe sockets in which'they t. If the angle is made more acuta' the resistance .to folding will vbe greater for the same spring pressure and vice versa.

. An important advantage of the present construction is that the bolts are urged outwardly .by the springsso that the spring reaction against the hangers and door leaves` mounted thereon is inward. 'Ihe bolts and springs thus tend to force the leaves, inwardly at all times, and hold the edges of the leaves closely to` the column. In previous constructions, in which the bolts or spring pressed devices are mounted outside of the discs and pressed inwardly against peripheries of the discs, the springs tend to urge the leaves away from the central column. This-has the result that any looseness in the pivotal connections of thejleaves results in a sagging of the leaves away from the column which may permit leakage ofair and which also may interfere with the proper frictional contact between the weather strips at the edges of the leavesV and the door casing, thus interfering with the proper smooth operation of the door. As the door continues in use and the pivotal connections wear, this condition is accentuated. With ourimproved construction, however, slight looseness or wearing of the pivotal connections is unimportant because the spring bolts keep the leaves in proper position at all times.

Owing to the fact that the inner edges of the door leaves are pressed rrnly into the grooves in the column by the spring pressure, the column serves to reinforce the leaves and thus thereby secure additional rigidity, a very rrn and tight structure resulting.

Another advantage of the present construction is that the bolts are located near the central column and inside of the outer diameter of the discs. This produces a construction which is very compact and enables the hangers to be reduced` in size to a minimum, thereby improving the appearance of the door and reducing the cost. of construction.

When it is desired to fold the door leaves manually, for the purpose of collapsing the door andy moving it to one side of the doorway, as is frequently done in warm weather, or for the purpose of moving large articles in and out of the building, it is desirable to provide means for unlocking the leaves so that they may be readily folded. In the present construction we accomplish this result by providing means for pushing the bolts into retracted or unlocked position against the tension of the springs and without in any way releasing or modifying the springY tension. In the` construction illustrated, each bolt is provided with a pin @il projecting from the side thereof and each hanger has a longitudinal push rod 92 mounted to slide radially in a .bore in the hanger. The inner ends of these push rods are adapted to engage the pins St while the outer ends of the push rods bear against the surfaces of eccentrics 94 mounted in the hanger. Each eccentric is mounted on a shaft 55 which is provided with bearing discs 9S and 91 which are mounted to turn in a circular recess in the hanger. The outer end of the shaft 95 is exposed and is provided with a socket 98 or is otherwise formed for engagement with a suitable key or tool by which the shaft 95 and eccentric may be rotated through a half turn. A stop pin lili) is provided to limit the motion of the eccentric from one extreme position to the other. Figure 3 shows the eccentric rotated to its outermost position in which the push rod S2 is moved outwardly away from the door column, thereby releasing the bolt 'l0 and enabling it to be held rmly in engagement with its recess in the disc lugby the pressure ofthe spring 1S. FigureG shows the eccentric, rotated to its ,opposite posi-V tion in which the push rod engages the ,pin 9i? andpushes the bolt into afretracted position, where it isA free from engagement with the notch on the discv so. that the door leaf is free tobe:

swung in either direction.

The bolts` may also-beused. to hold the door leaves in folded relationship, as illustrated .in`

FigureQr, y As here shown, thev bolts in the two outerleaves after having been retracted to .per. mit the leaves to be'folded, are released by turn.

ing the eccentrics. The bolts will then project over the lugs i4 which are adjacenttheretoin the foldedv position `ofthe leaves and will exert sufficient pressure against. such lugs to maintain the leaves in their folded relationship. The two inner leaves of course will be retained in position between two outerleaves.

While we have illustrated and described in detail one preferred form of` our invention, it is to be understood that changes may be made therein and the invention embodied in other structures. We do not, therefore, desire tolimit ourselves to the specic construction illustrated, but intend to cover our invention broadly in whatever form its principle may be utilized.

We claim:

1. In a revolving door, a central column, a plurality of leaves pivotally mounted thereon, and

means for yieldably retaining the said leaves in radial position comprising bolts mounted near the inner edges of the leaves and extending outwardly, spring means for urging saidl bolts outwardly, and keeper means fixed with relation to the column and engaged by said bolts.

2. In a revolving door, a central column, discs carried thereby, a plurality of ,leaves pivotally mounted on said discs, said discshaving inwardly faoing, notched lugs thereon, said leaves car-v rying outwardly projecting .bolts near their inner edges, and spring means` for yieldingly urgingv said bolts outwardly into engagement with the notched faces of said lugs.

3. In a revolving door, a central column, a supporting disc thereon, leaves pivotally mounted on said disc, bolts mounted near the inner edges of said leaves and lying within the periphery of said disc, spring means normally urging said bolts outwardly, and abutments carried by said disc adapted to be engaged by said bolts, said boltsr and ,abutments constituting means for yieldably locking said leaves in radial position.

4. In a revolving door, a `central column, a leaf supporting member fixed thereon and provided with keeper means, leaves pivoted on said supporting member, outwardly acting locking bolts on said leaves for engaging said keeper means and locking said leaves in spaced radial position,

springs for yieldably forcing said bolts radially cams mounted in the leaves for operating said push rods.

-. 6. In a revolving door, a supporting column, a disc mounted thereon having a lug near its periphery, said lug having a groove in its inner face, and a door leaf pvotally mounted on said ldisc, said door leaf having a radially extending recess therein, a bolt adapted to move in said recess and having a projecting wedge shaped face on its outer end adapted to engage in the groove in the lug on the disc, an adjustable plug mounted in the inner end of said recess, and a compression spring mounted between said plug and said bolt and acting normally to urge said bolt outwardly.

v'7. In a revolving door, a supporting column, a disc mounted thereon having a lug near its periphery, said lug having a groove in its inner face, and a door leaf pivotally mounted on said disc, said door leaf having a radially extending recess therein, a bolt adapted to move in said recess and having a projecting wedge shaped face on its outer end adapted to engage in the groove in the lug on the disc, an adjustable plug mounted in the inner end of said recess, and a compression spring mounted between said plug and said bolt and acting normally to urge said bolt outwardly, a push rod mounted to slide in a recess in the leaf and to engage said bolt, and an eccentric mounted to rotate about an axis transverse to the plane of the leaf and to engage the outer end of said push rod so as to cause said push rod to push said bolt into retracting position, said eccentric having means accessible from the outside of the leaf for rotating the same.

8. In a revolving door, in combination, a rotary rcentral support, leaves foldably mounted on the support, and means holding the leaves to the support and positively guiding them in their folding movement in opposite directions comprising a disc on the support having an annular groove common to all leaves, a socket for each leaf, and outwardly extending cam grooves extending divergently from each socket, and partially merging at their outer ends to form two adjacent sockets, and a pair of guide elements on each leaf for cooperating, respectively, with the annular groove and with the cam grooves.

9. In a revolving door, a central column, discs carried thereby, leaves having bifurcated hangers, the members of which embrace the discs and are pivotally connected therewith, said discs having 'inwardly faced lugs thereon, said hangers carrynotched faces of said lugs, and yielding wind stops mounted in the outer ends of the disc receiving recesses in the hangers and adapted to contact with the edges of the discs.

10. In a revolving door, a central column, a pair of discs, one iixed near the top and one near the bottom thereof, a plurality of leaves pivotally mounted on said discs, a plurality of inwardly facing keeper means on each disc corresponding with the radial positions of the respective leaves, and outwardly acting locking means mounted within said leaves engaging said keeper means to hold said leaves in radial position with respect to said column and draw the inner edges of said leaves toward said column.

11.7In a revolving door, a central column, discs xed near the top and bottom thereof, tracks in the discs, a plurality of leaves mounted on said discs, said leaves having guide elements cooperating with said tracks to permit movement of said leaves in relation to said column, means for locking said leaves in radial position in relation to said column, said means including keepers on said discs and outwardly acting spring pressed locking means engaging said keepers, said locking means normally urging the inner edges of said leaves in the direction of the column.

12. In a revolving door, a central column, discs fixed thereon, a plurality of leaves pivotally mounted on said discs, said discs having inwardly facing recessed lugs thereon, hard metal blocks in the recesses in said lugs, said blocks having notches formed on the inner exposed faces thereof, said leaves carrying outwardly projecting locking means near their inner edges and spring means for yieldingly urging said locking means outwardly into engagement with said notches.

13. In a revolving door, a central rotary column, leaves mounted thereon and projecting radially therefrom, said column including a central supporting member and a casing enclosing the central supporting member, comprising a pair of extruded sections of similar conguration, each section of the pair having identical complete ribbed portions, partial ribbed portions and inner portions fitting within the complementary partial ribbed portions, said partial ribbed portions having inwardly facing dovetailed grooves, said inner portions having flanges in the outer side thereof, said dovetailed grooves and said anges being arranged to interlock longitudinally, and recesses between said ribbed portions adapted to receive the inner edges of said leaves.

EDMUND PEREMI. CHARLES KISH.

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