US2337948A - Door hinge - Google Patents

Description

Dec. 28, 1943. A 2,337,948

DOOR HINGE Filed y 26, 1940 a Sheets-Sheet 1 I vv 79 a6. I a; 76 f u 3 '30 29 3a a? 6' (416.01:

a Jazzy/ .5 9 12a. 5 6 J QQ Dec. 28 1943. J. VANI noon HINGE Filed July 26 8 Sheets-Sheet 2 {JAM Dec. 28, 1943. I .J. VAN! 2,337,948

DOOR HINGE Filed July 26, 1940 8 Sheets-Sheet 5 J. VANl DOOR HINGE Dec. 2 8, 1943.

Filed July 26, 1940 8 Sheets-Sheet 5 J. VANl DOOR HINGE Dec. 28, 1943.

Filed July 26, 1940 8 Sheets-Sheet 6 aide/a er 6, g; X -A 2J5 9; 1

Dec. 28, 1943.

J. VAN! 2,337,948

, DOOR' HINGE Filed July 26, 1940 8 Sheets-Sheet 7 i m mm .uZ zadezz/lar k/kvee-s 4/01; 5

J. VANI DOORHINGE Dec. 28; 1943.

Filed July 25, 1940 8 Sheets-Sheet 8 Patented Dec. 28, 1943 DOOR HENGE James Vani, Chicago, Ill.,' assignor to Chicago Metal Mfg. 00., Chicago, 111., a corporation of Illinois Application July 26, 1940, Serial No. 347,725

4 Claims.

My invention relates to doors.

It is particularly applicable to and will be illustrated and explained in connection with doors for so-called smoke ovens wherein meats, such as hams and bacon, are smoked or cured, although doors embodying the invention have a wider application. In smoking meats, for example, it is highly desirable that the smoke be applied under considerable pressure to insure more speedy and proper penetration. For obvious reasons the escape of smoke from the chamber in which the treatment takes place is undesirable, but smoke-tight doors which, at the same time, may be readily opened and closed have not heretofore been available. Trouble has been particularly in evidence at the hinge edges of the doors and between the panels of double doors.

The principal object of my invention is to provide a gas-tight doorone from which smoke, for example, and other gases under considerable pressure cannot escape.

Another object is to improve the seal at the hinge side of a swinging type door.

Another object is to provide an improved seal between panels of a double door.

Another object is to provide a door which, when open, can be swung completely back and out of the way.

A further object is to provide a tight door that is reliable, easy to operate and of simple construction.

Other objects and advantages will hereinafter appear.

Two embodiments of my invention-one in a single door and one in a double door-areillustrated in the accompanying drawings wherein:

Fig. 1 is a front elevation of a single doorclosed and in fully sealed and latched condition;

Fig. 2 is an enlarged section on the line 2-2 of Fig, 1;

Fig. 3 is a section similar to Fig. 2, with the door closed, but unlatched, and with the seal uncompleted;

Fig. i is a front elevation .of a double door closed and in fully sealed and latched condition;

Fig. 5 is an enlarged section on the line 5-45 of Fig. 4;

Fig. 6 is a section similar to Fig. 5, with the door closed, but unlatched, and with the seal uncompleted;

Fig. 7 is a section on the line '!i of Fig. 4;

Fig. 8 is a section on the line 38 of Fig.

Fig. 9 is an enlarged broken section on the line 9-9 of Fig. 4;

Fig. 10 is an enlarged section on the line iill0 of Fig. 4;

Fig. 11 is a section similar to Fig. 10, with the door latching mechanism in an intermediate position;

Fig. 12 is an enlarged section on the line l2l2 of Fig. 4;

Fig. 13 is an enlarged section on the line 53-43 of Fig. 9;

Fig. 14 is a section on the line l ll i of either Fig. 1 or Fig. 4;

Fig. 15 is a section on the line l5i5 of Fig. 4 or Fig. 1 (reversed); and

Fig. 16 is a section on the line Iii-l6 of Fig. 15.

In general, the illustrated embodiments of my invention include a frame about a doorway and one or more panels for closing the doorway, outer margins of a panel and inner margins of the doorway frameand, in the case of double doors, adjacent margins of the two closure panelshaving complementary confronting sealing elements-at least one of which is elasticwhich, when pressed sufliciently tightly together, provide an effective gas-tight seal therebetween. Each panel or door proper is supported upon one or more hinges which are of a type permitting the panel to be swung'about a pivot to open and closed positions and, in addition, when the panel is in closed position and properly latched at its outer or unhinged edge, enabling the panel, in the hinged region, to be moved inwardly sub stantially transversely of the plane of the doorway to bring the sealing elements, particularly along and in the regions adjacent the hinge edge or" the panel, into tighter engagement. Manu ally actuated mechanism is provided for tightly shutting and latching the outer or unhinged edge of a panel in closed and sealing position and also for then moving the hinged edge inwardly to bring tightly together the sealing elements in the hinged region and latching it to maintain this condition until released.

A single door construction will be first described, initial reference being particularl to Figs. 1, 2 and 3.

Fig. 1 shows the front of a smoke oven in the form of a cabinet 5 of any appropriate construction. Its doorway 6 is closed by a door proper or closure panel 7. The doorway is bounded on all sides by a doorway frame 8, the principal function of which is to provide a suitable mounting for one of the confronting complementary sealing elements hereinafter described. The closure panel I is hinged along onevertical edge formed with a body H which is normally some-' what cylindrical, as shown in Fig. 3, but which upon the final sealing movement of the panel to be later explained, is brought tightly against the flange l and compressed and flattened as shown in Fig. 2. The anchorage of secondary sealing strip I6 to the edge of the closure panel may be effected in various ways. such as providingit with a fin I8 adapted to be clamped and secured between the back side of the panel and a projecting flange of one of the elements ofa primary seal to be now described.

The primary seal includes an elastic element 2!] preferably of rather soft rubber, which lies along the inner margin of the doorway frame, and a rib 2! extending along the margin of panel 1 a short distance inside of elastic element l6 of the secondary seal. Preferably, as shown in Figs. 2 and 3, the inwardly projecting rib 2| may be formed by folds in the metal sheet constituting the inner face of the closure panel, the extreme ed es of the sheet being utilized to clamp upon and anchor the fin l8 of the elastic element I6 of the secondary seal. The elastic element .20 of the primary seal is held in place within the channel 22 of a seal sup ort 23 forming a part of the doorway frame. When the panel is forced into sealing position. as will be hereinafter explained,

the metal rib 2| on the closure panel compresses and is transiently embedded in the elastic element 20, as shown in Fig. 2.

Thus, the doorway and the outer margin of the closu e panel are bounded by complementary confrontingsealing elements carried by the doorway frame and the panel respectively, and which. unon being tightly pressed together as shown in Fig. 2, results in a compressing of the elastic elements -in fact, as to the primary seal the actual embedding of one element into the other-to provide an effect ve seal through which gas, even under considerable pressure, cannot escape.

In order that the closure panel may be freely and easily swung between open and closed positions without appreciable pressure upon the sealing elements along the hinge or inner edge thereof duringmovement, and yet to provide the necessary movement toenable the sealing elements to be forced tightly together after the door is closed. the hinges 9 are of a type which permits of dual movements of the panel. These move ments are, in closing. first a swinging or pivotal movement about the hinge pivot axis to bring the panel from open to closed positions and then a slight pivotal movement about the ,unhinged or outer. edgea movement so slight that it is practically a rectilinear movement inwardly of the hinge. edge. In opening the door the movements are, first, anoutWard movement of the panel at its hinge or inner edge, which is substantially perpendicular to the plane of the doorway, and then a pivotal movement about the hinge axis to swing the panel clear of the doorway.

, Since-the hinges 9 may all be alike, only one needs be described. A hinge includes a resilient or spring metal strip 30 pivotally connected to the doorway frame at one end and pivotally connected to the closure panel, preferably in the transverse mid region, at the other end. Of course, it is not necessary that the pivot about which the closure panelswings be carried by the doorway frame in any strict sense of that expression; it may, for example, be carried by the wall of which the doorway frame forms, in effect, only a part. For this reason the expression "doorway frame is not to be taken in its strict technical sense, but, rather, to include any appropriate part of the structure to which the movable closure panel may be pivotally attached.

How the pivotal connections are effected is immaterial. As shown particularly in Figs. 2 and 3, one end Of the strip 3B may be bent around to form a bearing 3| for a pintle 32. Pintle 32 is supported at opposite ends in ears 33 of an attaching bracket 34 which may be secured to the doorway frame in any suitable manner, such as by screws 35. In a similar manner the other end of strip 30 may be bent around to form a "bearing 36 for a pintle 31 supported at opposite ends in the ears 38 of an attaching bracket 39 which may be secured to the front face of the closure panel by suitable means such as screws 40. I

The resiliency of the closure panel supporting hinges is utilized to effect the final sealing movement of the hinged or inner edge of the panel through the cooperation of pressure controlling mechanism located intermediate the hinges and panel and manually operable either to fiex or tension and to release the tension in the spring hinges. Upon the flexing or tensioning 0f the spring hinges, the inner edge of the panel is given the final inward movement which forces the sealing members tightly together to effect the final seal; upon the release of tension in the spring hinges, the inner edge of the panel is moved slightly outward to relieve the sealing compression, as previously explained. Inasmuch as the manually actuated pressure controlling mechanism for all of the hinges may be alike, only one mechanism will now be explained in detail.

Intermediate its ends the hinge strip an is loosely secured to the panel by means of a U-shaped yoke 45 which lies loosely between the upstanding flanges 56 of a bracket 41. Yoke 45 straddles and is rigidly attached to spring strip 30 by screws 48 and bracket 41 is rigidly attached to the front face of closure panel i by screws 49. A cam disc 5!) is locatedwithin the yoke 45 to bear against both the yoke and strip 30. Disc 50 is eccentrically mounted upon an operating shaft 55 which is journaled in the upstanding fianges 46 of bracket 41. Adjustability of the relation between the shaft, eccentric disc and of the engagement of the disc with yoke 45 and strip 30 is'attained by securing the disc to the shaft by a set screw 56.

As shown in Fig. 1, shaft 55 is of a length to underlie all of the hinges 9 with which a closure panel may be equipped and at each hinge it is equipped with an eccentric disc 58 located within the socket formed by yoke 45 and hinge strip 30. Thus, upon rotation of shaft 55 in one direction, the eccentric discs 50 may all be rotated to cause hinge spring strips 30 to exert pressure upon the panel in the region of its hinge edge to force it inwardly transversely of the plane of the doorway, so as to bring more closely together the panel and doorway frame in that region and firmly press together the sealing elements carried thereby, as shown in Fig. 2. Rotation of shaft 55 in the opposite direction will release the tension in spring hinges 39 to move the hinge edge of the panel outwardly to increase the separation between the panel and doorway frame and release the pressure between the sealing elements carried by them, as shown in Fig. 3.

Shaft 55 is adapted to be rotated by a suitable handle such as shown in Figs. 1, 15 and 16. Handle oil is hinged upon a pivot to and between the ears 52 of a collar which collar is in turn rigidly attached to shaft 55 in any appropriate manner. In its normal or doorway closed position handle it lies in the open-topped socket of a holding member 65 which is, by screws or otherwise, secured to the front face of the closure panel (see Figs. 1, and 15). In this normal position of handle as shown in Fig. 1, the shaft 55 is turned so that its cam discs 55 have forced the hinge edge of the panel rearwardly or inwardly with the sealing elements in compressed sealing relation as shown in Fig. 2; and this relation is retained as long as handle fill is held by the socket in the holding member 83. When it is desired to release the hinge edge of the door, handle so is rocked upwardly about pivot 6i until it passes out of the socket of holding member lit, whereupon the handle is to be swung horizontally to turn shaft 5 to rotate cam discs 53 to move the hinge edge of the door forwardly or outwardly to release the comp. between the sealing elements, as shown in Fig. 3.

The outer or unhinged edge of the door is forced into closed sealing position and the-re held by a manually actuated latch mechanism operated by a handle '19 and the details of which are shown in Figs. 2 and 3. Eandle 3 is pivotally carried by an operating shaft ll through a knuckle joint 52 is latched normal or door closed position by a sooketed holding member is essentially identical to those hereto-fore described for handle to. Shaft ii is journaled in a br clzet l5 suitably secured, by screws or otherv' to the front face of closure panel 5 and can. for each of the several latc" s at the outer edge or" the panel (three being shown Fig. l) a bifurcated crank it adjustably secured thereto by a set screw ll. 7

Each crank 1'5 has a bolt member 13 pivotally attached thereto between its'bifurcated ends on a pin 19. Bolt it is provided with a slot in which lies a pin 8! anchored in and extending between the outwardly projecting flanges 81": of bracket The forward end of each bolt '58 is adapted to be received by a socket member which is attached alignment with the co spending bolt to the front face of the door panel by screws or other apprc- "ate B horizontal rotational movement of ndle shaft ll may be rotated to cause cranks 5 withdraw the bolts 38 from sockets 83, a indicated in Fig. 3. Reverse rotational. moi "cincnt handle lb ca s cranks i5 first to project the bolts '53 into e corresponding sockets and then, upon further movement after the e of bolts l3 lie in the sockets 8 to cause the b rust of the ends of the bolts a net the front walls i l of the sockets 83 to force the outer or unhin ed edge of the closure panel rearwardly from 1 dition indicated by 3 to the co cated by Fig. 2, whernn the comp .entary 5 al.- ing elements on and in the regions adjaccot the panel and doorway frat-.ne are compressed htly together to effect atight seal between them.

Briefly summarized, the operation of the single door is this: Assuming the closure panel l to be in unlatched condition as indicated in Fig. 3, it may then be freely swung clockwise about the vertical axis of hinge pivots 32 until the doorway is completely open. In fact, the closure panel may be swung around almost against the side wall of the oven. During such swinging movemenb-and also in swinging the panel to closed positicn'there needs be at no time any appreciable contact and pressure between the sealing elements along the hinge edge of the panel. Thus, the swinging of the door is uni. peded by the sealing elements. New to close and seal the door the panel is swung horizontally about the vertical axis of binge pivots 32 from open position until it blocksthe doorway as shown in Fig. 3. Then lat-ch handle 583, which previously has been standing outwardly to withdraw bolts i8, is turned so as to project bolts it into sockets 8t and then still further rotated to cause the ends of bolts is to thrust against the front walls 85 of sockets as previously described, and force the outer edge of the closure panel inwardly, so as tightly to compress together the sealing elem nts along the outer edge and also throughout a portion of the top and bottom edges.

To retain the outer edge of the closure panel in this sealing condition, handle it is swung downwardly about the pivot of knuckle M to a position within the socket of holding member '33. Finally, handle 65, which up to now should be standing outwardly to hold the hinge edge sealing elements in the uncompressed condition shown in Fig. 3, is turned to rotate the shaft 55 and permit the bias of the spring hinge strips (it to force the hinge edge of the closure panel toward the doorway frame and thereby tightly compress together the sealing elements along the doorway edge and also throughout the top and bottom edges in the regions near the hinge edge. Now by swinging the handle 56 downwardly about pivot until it is in pos tion to be retained in the socket of holding member 64 the door is latched closed with the closure panel throughout its margin tightly sealed against the panel.

In opening the door from sealed condition, the hinge edge is first released by lifting handle 58 out of its socket in the holding member 6t and rotating it so as to turn eccentric discs 5i and thereby relieve the thrust of hin e strips 39 and enable the hinge edge of the closure panel to move outwardly away from the plane of the doorway frame and release the compression between the complementary sealing elements along the hinge edge. Next, the outer or unhinged edge is released by l fting handle it from its socket in holding member l3 and then rotating it to effect the release and withdrawal of all of the bolts E8. The closure panel is now ready to be swung about the axis of hinge pivots 32 completely to open the door.

The double door construction will now be described, initial reference being particularly to Figs. 4, 5 and 6. r

Fig. 4 shows the front of an oven hi5 having a doorway IE6 closed by two closure panels iii! and till. The doorway is bounded by a doorway frame I533 on which are pivotally mounted the desired number of panel supporting hinges 669- three being shown for each door panel. The doorway frame and the top, bottom and hinge edges or" each closure panel carry complementary secondary sealing elements i it; and l in and cornplementary primary sealing elements lit and I2! such as previously described. The adjacent or unhinged edgesof the two closure'panels are equipped with somewhat different sealing elements, as will later appear.

Each hinge is equipped with a pressure cam disc I5lJ--all of the discs for the hinges supporting panel I51 being adjustably mounted on an actuating rod I55 and all of the discs for the hinges supporting panel I51 being adjustably mounted on an actuating rod I55. Actuating rods I55 and I55 are operable by handles I65 and IE, respectively, which handles are, in door sealing position, adapted to be retained in the sockets of holding members I65 and I64, respectively.

Thus, in so far as the hinge edges are concerned, each panel of the double door is pivotally carried by resilient hinges permitting dual movements of those edges, is equipped with elastic sealing elements confronting complementary elements on the doorway frame when the door is closed, and has manually actuated seal compressing and latch mechanism essentially identical in structure, method of operation and result to a single door, such as heretofore explained in detail.

The two panels are sealed together along their inner or unhinged edges in a somewhat different manner. This will now be described, with special reference to Figs. and 6.

Panel I81 is provided along the edge confronting panel I51 with a metallic seal strip 250. This strip is secured to and attached to the panel I01 by a plate 2M and screws 252. It lies in a recess 203 behind a ledge 254 of panel I01 overhanging the extreme edge of the panel in posi- 4 tion to contact with a compressible sealing element along the outer edge of the panel I51, as

will be apparent from Figs 5 and 6 and as will presently be described. 7

Between seal strip 255 and panel ledge 25 there is provided suitable seal filling 285 so that no leakage of gas may occur between the seal strip 200 and the panel to which it is attached. Panel I01 is provided with a complementary recess 2m and ledge 2I I along its unhinged edge with a compressible sealing element 2I2 carried 7 and supported on the ledge. Preferably this sealing element M2 is of soft rubber and it may beformed and secured in place on ledge 2II in any suitable manner, such, for example, as in essentially the same way as the strips H5 are secured along the hinge edges.

The two closure panels I51 and I01 are provided with cooperating compressing mechanism whereby their outer or unhinged edges may, after the panels are swung to door-closing positions as indicated in Fig. 6, be drawn firmly toward each other to clamp the compressible sealing element strip 2I2 of panel I01 tightly against the metallic sealing strip 205 of panel I51, preferably to the extent that the compressible strip is flattened and compressed as shown in Fig. 5, thereby sealing the joint between the two panels. This compressing mechanism includes one or more levers 2 I5 (these being shown in the drawings) which are carried by panel I01 and adapted to be projected forwardly and bear against pressure plates 2 I6 carried by panel I51.

Each lever 2I5 is pivotally connected to the bifurcated end of a bell crank 2I1 by a pin 2l8 and is provided with a slot 2I 9 accommodating a fixed pin 22%. The levers 2l5 are adjustably attached to an operating shaft or rod 225, by a set screw 225. Shaft 225 is journaled in the upstanding spaced flanges 221 of brackets 228,

there'being a bracket for each lever 2 I5. Flanges 221 of each bracket flank the associated bell crank 2I1 and lever 2I5 and between them lies the pin 220 which at opposite ends is anchored thereto. Actuating rod 225 is provided with an actuating handle 229 fixed thereto by a knuckle 25H-this knuckle causing the handle to rotate the shaft when the handle is swung in a substantially horizontal plane, but permitting the handle to be rocked Vertically above pivot 23I and thus enable it to be lowered into the socket of a holding member 232 and thereby prevented from horizontal movement or to be raised from the socket and thereby freed for horizontal movement to rotate shaft 225. Thus, with the panels swung shut, but unsealed along the unhinged edges and the compressing mechanism retracted as indicated in Fig. 6, the handle 229 may be moved horizontally to rotate shaft 225 and thereby project forwardly all of the levers H5. The levers 2I5 first move forwardly across the space between the two confronting outer panel edges and then, because of the compound movement imparted to them by the pivotal connections with the levers 2H and the sliding connections between slots 2I9 and fixed pins 220, their forward ends engage the pressure plates 2E5. Further effort on handle 229 causes the confronting outer panel edges to be forced into alignment, resulting in the compressible sealing strip 2i2 being tightly clamped against the metallic sealing strip 255 to effect the seal between the outer panel edges as indicated in Fig. 5.

The operation of handle 229 to effect the outer edge seal (i. e., the seal between the confronting edges of the closure panels) as just explained also serves to operate latching mechanism for holding the panel of the door in closed sealed condition. To accomplish this result shaft 225, which, as before stated is turned by handle 229, has a sleeve 24!! feathered thereto near one end, each sleeve being rotatable with shaft 225 and yet capable of limited longitudinal movement therealong. Each sleeve is provided with a cam-shaped latch bolt 2M which is adapted, under conditions to be presently explained, to cooperate with an abutment 242. Each abutment 242 is attached to the doorway frame by a stirrup-like bracket 243which is anchored to the frame by screws ZM-and is made adjustable toward and from the axis of shaft 225 by an adjusting set screw 245.

Each sleeve 240 is equipped with a projecting stud 255 on the end of which a cam roller 25I is rotatably'secured by a screw 252. Each roller 25I lies in a cam formed by the two angled and parallel flanges 253 of a cam bracket 254. Bracket 254 is secured to the front face of panel I51 by appropriate means, such as screws 255.

Thus, upon rotation of shaft 225 by handle 229 in a direction to project the levers 2I5- to sealing position, sleeves 24ll-and consequently latch bolts 24! and studs 250 carrying cam rollers 25I--are rotated about the axis of shaft 225. At the same time the cam rollers 25I move along the cam grooves provided by flanges 253 and, when the sloping portions of those cams are reached, the sleeves 24B are caused to travel outwardly along shaft 225 to move the latch bolts 2 into alignment with abutments 2 2 2 and also to turn the latch bolts into wedging engagement with those abutments. In other words, the latch bolts move from the position indicated by the dotted lines of Fig. 13 into the position indicated by the full lines. Preferably the angular or time relation between the dwell (i. e., horizontal) and active (i. e., sloping) portions of the cams formed by flanges 253 and the compressor levers H is such that the latch bolts 24! reach latching position with respect to abutments 2 12 shortly before the compressing levers 2l5 reach the limit of their seal tightening condition.

Briefly reviewed, the operation of the double door seal and latch is as follows: Assuming that the doors are closed and latched as indicated in Fig. 4, the handles I50 and 229 are substantially flat against the panel I67, and handle IE6 is substantially flat against panel fill, each being there retained against accidental displacement by its respective holding member I64, I64 and 232. In this condition operating shafts I55 and I55 are turned so that the cam discs carried thereby have brought about and retain the seal compressing relation along the hinge edges of the panels indicated by Fig. 5. Likewise, shaft 225 is turned and held so that the compressing levers 2l5 are projected across to the adjacent edge of the other panel and, by outward pulls exerted on the panel EM and inward thrusts exerted upon panel ifi'l, have compressed tightly together the sealing strips along the inner or unhinged panel edges as indicated in Fig. 5. Furthermore, shaft 225 is turned so that latch bolts 2 5i are projected outwardly into alignment with latch abutments 2&2 and turned so as to engage the abutments and latch the panels in closed and tightly sealed condition as indicated in greater detail by the full lines of Fig. 9.

Now if it is desired to open the door, handles Hill and I50 are first elevated out of the sockets of holding members I65 and N54, respectively, and turned to project outwardly from the plane of the panels. These movements of handles I60 and it?! cause the hinge edges of the two panels to recede from the adjacent doorway frame and release the seal and tight compression between the complementary sealing elements therealong so that they assume the relative positions indicated in Fig. 6. Next, latch handle 229 is raised from the socket of its holding member 232 and turned to project outwardly from the plane of the door panels. This movement of handle 22!! withdraws compressing levers 2H5 to release the seal between the confronting outer or unhinged panel edges, as indicated in Fig. 6, and also withdraws bolts Z -H from engagement with abutments 242 as indicated by the dotted lines of Fig. 9. The panels are now unsealed and unlatched and ready to be swung about the axes of hinges m9 to fully door-open position. And during such swinging movements there is no appreciable pressure upon the sealing elements along the hinge edges of the panels.

In closing, sealing and latching the double door, the panels are first swung shut about the axes of their hinges HIS. Then the latching handle 228 is swung horizontally from a position where it projects outwardly from panel N31 to the position where it lies along the panel and rocked downwardly to lie in the socket of holding member 232. This movement of handle 229 projects forwardly the compressing levers M5 and causes the adjacent outer panel edges to be drawn into alignment, thereby compressing together the complementary sealing elements therealong into tight sealing relation as indicated in Fig. 5; also it projects the latch bolts 2M into alignment with the associated abutments 2 32 and turns those bolts to provide the tight wedging latch action heretofore mentioned. Finally, the sealing handles I and H58 are turned from positions in which they project outwardly from panels lfl'l and N31 to positions in which they lie along those panels, respectively, and rocked downwardly to lie in the sockets of their respective holding members H58 and Hit. These movements of handles I66 and ltd cause the hinge edges of panels if]? and it? to be forced toward the plane of the doorway frame,

with the result that the sealing'elements along those edges are tightly forced together into seal.- ing position, as indicated in Fig. 5.

, Having thus illustrated and described typical embodiments of my invention, what I claim and desire to secure by United States Letters Patent is as follows:

l. A hinge for a door closure panel comprising, a resilient strip adapted for pivotal connection both to the panel and to the doorway frame, the flexure of the resilient strip permitting tl e hinge side of the panel to be moved in and out relative to the doorway frame after the panel has been swung shut; and control mechanism located intermediate the two pivotal connections of the hinge strip to efiect in and out movements of the hinge side of the panel while the panel is in closed position, said mechanism comprising a U-shaped yoke attached to the hinge strip, a rotatable shaft adapted to be carried in a fixed position relative to the panel, and an eccentric cam disc carried by the shaft and located between and in contact with the yoke and the hinge strip.

2. A hinge for a door closure panel comprising, a resilient strip adapted for pivotal connection to both the panel and doorway frame, the flexure of the resilient strip enabling the hinge side of the panel to be moved in and out relative to the doorway frame after the panel has been swung shut; and mechanism for flexing the hinge strip after the closure panel has been swung shut so as to move the hinge side of the panel in and out relative to the doorway frame, said mechanism comprising a generally U-shaped yoke secured to the hinge strip intermediate its ends, a rotatable eccentric cam lying within the yoke and engaging both the yoke and the hinge strip, and a pivot for mounting the cam with its axis in a fixed position relative to the closure panel so that rotational movement of the cam after the door is swung shut effects flexing of the hinge strip and movement of the closure panel in and out relative to the doorway frame.

3. A hinge for a door closure panel comprising, a resilient strip adapted for pivotal connection to both the panel and the doorway frame, the flexure of the resilient strip enabling the hinge side of the panel to be moved in and out relative to the doorway frame after the panel has been swung shut; and mechanism for flexing the hinge strip and thereby altering the spacing between the closure panel and the strip to effect in and out movements-of the hinge side of the panel while the panel is in closed position, said mechanism comprising a yoke secured to and having a bearing surface spaced from the hinge strip and lying between the hinge strip and the closure panel, a rotatable shaft adapted to be carried in a fixed position by and relative to the panel and lying between the hinge strip and the bearing surface of the yoke, and an eccentric cam disc carried by the shaft and located between and in contact with the bearing surface of the yoke and the hinge strip.

1 4. A door hinge for effecting a-tight seal between elastic elements on the closure panel and the doorway frame and comprising, a resilient metallic hinge strip the flexure of which permitsthe hinge side of the panel to be moved in and out relative to the doorway frame after the panel has been swung shut, a pivotal connection for attaching the strip to the closure panel, a pivotal connection for attaching the strip to the doorway frame, said strip and pivotal connections providing a swinging support for the closure panel on the doorway frame, a yoke located between the hinge strip and the closure panel and attached to the strip, a cam disc located between and in contact with both the hinge strip and the yoke, a rotatable shaft upon which the cam disc is eccentrically mounted, a bracket for attachment to the closure panel and supporting the shaft, and a handle for rotating the shaft so as to rotate the eccentric cam disc and thereby flex the resilient strip and move the hinge side of the panel in and out relative to the doorway frame to compress and release compression'between the elastic elements on the closure" panel and the doorway frame.

' JAMES VANI.

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