US2224675A

US2224675A - Lock and closing unit for upward acting doors

Info

Publication number: US2224675A
Application number: US278666A
Authority: US
Inventors: Matthew P Graham
Original assignee: Crawford Door Co
Current assignee: Crawford Door Co
Priority date: 1939-06-12
Filing date: 1939-06-12
Publication date: 1940-12-10
Anticipated expiration: 1957-12-10

Description

' M. GRAHAM Dec. 10, 1940.

LOCK AND CLOSING UNIT FOR UPWA RD ACTING DOOR-S Filed June 12, 19:59

3 sheets-sheet 1 NATTHZ'W GRAHAM Dec. 10, 1940. M. P. GRAHAM LOCK AND CLOS ING UNIT FOR UPWARD ACTING DOORS Filed June 12, 1939 3 Sheets-Sheet 2 Dec. 10, 1940. GRAHAM 2,224,675

LOCK AND CLOSING UNIT FOR UPWARD ACTING DOORS Filed June 12, 1939 3 SheetS-Sheet 3 MATTHEW P GRAHAM Patented -10,

, LOCK AND cnosmo unnmlr urwsnn sc-rmo noons Matthew P. Graham, permit men, assignor to Crawford Door Company, Detroit, Mich, & our

' poration oi Michigan Application June 12,

locking unit especially adapted for upward act- 'ing doors of the 83 type.

More particularly this invention relates to devices for drawing swinging type upward acting doors into a fully closed position.

The invention will be speciflcallyhereinafter described in connection with upward acting doors of the swinging type, but it should be understood m that the lock and closing units of the invention are not limited for use with such type of doors.

The usual locking devices for upward acting doors are not capable oi drawing the doors to a fully closed position and are only efiective 5 in locking 8. fully closed door. However, in upward acting doors of the swinging type, the door may frequently come to rest in a partially opened position and must be manually forced into a fully closed position before it can be locked.

' According to the present invention, closing units actuated by the door locking mechanism will draw the door into a fully closed position J simultaneously with a locking of the door. The closing units of this invention include one or more U-shaped or oiiset arm members pivoted at one end on the inner face of the door near an edge thereof. The free end oi-the arm or U -shaped member is adapted to be moved beyond the adjacent edge of the door and thrust against 7 a door lamb, fixed sill bracket, or the like, thus drawing the door into a fully closed position. The arms areactuated by a link mechanism operated from the door handle. A locking of tive from the outside of the door so that these closure devices also effectively lock the door in closed position.

The invention eliminates the necessity for manually forcing an overheaddoor oi the swinging type into fully closed position before it can be locked since an operation of the locking device will draw the partially open door into fully closed position.

45 It is, then, an object of the invention to provide closing units for doors capable of drawing the doors into a fully closed position.

Another object of the invention is to provide combination locking and closing units for doors.

A further object of the invention is to provide a simple, inexpensive lockingunit for swinging type upward acting doors which simultaneously draws the door "into fully closed position.

A further object of the invention is to provide a an offset arm engageable with a door lamb, sill,

the door handle will render each arm inopera- 1939, Serial No. 228,665

. (one-1'21) This invention relates to a door closing and bracket or the like and operated by a lock mech- A anism for closing and looking a door.

. Other and further objects of the invention will become apparent to those skilled in the'art from the following detailed description of the 5 annexed sheets of drawings which disclose 'preferred embodiments of the invention.

, 0n the drawings: r a

Figure 1 is a vertical cross-sectional view taken through a doorway and illustrating, in side ele- 1o 7 vatlon, a swinging type upward acting door in closed and partially opened position and equipped. with a closing unit and lock according to this invention.

Figure 2 is a fragmentary elevational view of. 15'

the door and doorway shown in Figure 1 viewed from the inside thereof.

Figure 3 is an enlarged broken cross-setional ,view taken along the line III-III of Figure 2."

Figure 4 is-a broken inside elevational view of 20 the structure shown in Figure 3.

Figure 5 is a broken cross-sectional view, with parts in elevation, taken through an-upward acting door of the swinging type and illustrating a modified form of locking and closing device according to this invention.

Figure 6 is a broken inside elevational view of the structure shown in Figure 5.

- Figure 7 is a vertical cross-sectional view, with parts in elevation, taken along the line VII-.VII 30 of Figure 3.

Figure 8 is a broken, fragmentary elevational view of a door and doorway viewed from the inside thereof and illustrating another modification oi the locking and closing device of this inven- 35 tion wherein an offset arm engagesa sill bracket instead of a door lamb.

Figure 9 is a vertical cross-sectional view, with parts in elevation, taken along the line IX-IX of Figure 8 and also illustrating, in dotted lines, the open or unlocked position of theofiset arm.

As shown on the drawings:

InFigures 1 and 2 the reference numeral l0 designates a door for closing a doorway H in a building such as a garage or the like. The door- 1 weatherstrips |8 mounted on the door move away way H from the sill or floor |3 to above the middle. of the doorway.

Weatherstrips I8 are mounted on the inner face of the door In along the sides thereof and extend beyond the edges of the door for abuttin the door jambs l2. The weatherstrips l8 extend from the tops of the weatherstrips to the top of the door.

Brackets l9 are mounted on the door jambs |2 at about the middle of the doorway and pivotally carry link arms 29. The link arms 20 are pivotally connected at their other ends to the bottom portion of the door "I on the inner face thereof.

A cable 2| is mounted at one end thereof to the lintel H at the center of the doorway. The cable extends from the lintel downalong the outer face of the door and through the bottom portion of the door around a pulley 22 rotatably mounted in the door. The cable then extends from the pulley 22 along the inner face of the door to a winding drum 23 rotatably mounted on brackets such as 24 carried by the door I! at the top thereof. 7

The winding drum 23 may be actuated by a spring or by other means to wind the cable 2| therearound and thereby counterbalance the door for moving the pulley 22 thereon toward the lintel H. The door thus swings from a closed vertical position shown in dotted lines in Figure 1 to an outward position shown in solid lines. in Figure l and thence upwardly to a fully open horizontal position. During this swinging movement of the door the bottom portion thereof is guided by the link arms 20 and the top portionof the door rolls inwardly on the tracks IS. The

fromthe door jambs |2 since the upper portion of the door 'only moves inwardly from the doorway. However,the lower portion of the door swings outwardly from the doorway during the opening operation and the weather-strips II are therefore carried on the inner faces of the door jambs |2 so as not to interfere with the opening of the door.

When the door is pulled downwardly from its will eliminate this possibility and insure a complete closing of the door so that the weatherstrips are in effective contact with abutting members.

As best shown in Figures 2, 3 and 4, a metal the door. A hole 2'! is cut through the door It! to register with an aperture in the plate 26 as best shown in Figure 3.

A handle 28 is mounted on the outer face of the door to coverthe hole 2'1. A square rod 29 extends from the handle 28 through the hole 21 and projects beyond the plate 26 on the inner face of the door.

As best shown in Figures 31 and 7, a washer 30 is disposed around the projecting end of the rod 29 and is rotatably seated in'the aperture of the plate 26. A lock bar 3| has a square hole intermediate the ends thereof receiving the square rod 29 therethrough. As shown in Figures 3 and 4, this lock bar 3| extends beyond both sides of the plate 25 and has the free end 3|a thereof of a suflicient length to' project beyond the inner edge of the Weatherstrip so as to thrust against this strip. I

Outturned flanges 3|b are bent' back from the free end of the bar 3|a as shown in Figure 4 so as to guide the bar behind the Weatherstrip ii.

A washer 32 is next disposed around the projecting end of the rod 29 so that the bar 3| is carried on the rod between two washers 30 and 32.- The required number of spacer'washers 33 are next disposed over the free end of the rod 29 for urging the washer 32 against the, bar 3|.

The end of the rod 29 is internally threaded for receiving the threaded shank of a bolt 34 which draws the washers 33 against the washers 32 and holds the above described assembly on the projecting end of the. rod 29. At the same time'the V handle 28 is held in rotatable relation on the 1 cesses 38 in the lock handle. Thus when the key 36 is actuated to throw the tumblers 31 into the recesses 38, a rotation of the handle 23 will turn the rod 29 for operating the lock'bar 3|. However, when the tumblers 31 are retracted by the key 36, the handle 28 will rotate freelyaround the rod 29 without turning the rod. The lock bar 3| then cannot be operated from outside of the door.

As shown in Figures 3 and 4, a handle 46 projects inwardly from the door In and is pivotally mountedon the inner end of the lock bar 3|. This handle 40 also serves to pivotally connect the end of a link rod 4| to the lock bar 3|. As shownin Figure 2, the link rod 4| extends horizontally across'the inner face of the door i0 near- As shown in Figures 2, 3 and 4, a bracket 43 is secured on the inner face of the door at about the same level as the plate 26 but near the opposite edge of the door. This bracket has an apertured inwardly extending top flange 43a. A pivot pin 44 extends through the aperture of the flange 43a and pivotally supports the inner end of a bent or U-shaped arm 45 mounted on top of the flange 43a. This arm 45 extends inwardly around the guide arm 20 so as not to interfere .with the operation of this arm. The free end 45a of the U-shaped arm 45 is adapted to thrust against the Weatherstrip H for drawing the door l0 against the portion of the Weatherstrip ex-.

tending into the doorway A connecting member 48 is pivoted by means of a pin 41 to the base or bend of the U-shaped member 45. As shown in Figures 2 and 4, this connecting member 46 has a dependent apertured flange 460. through which the end of the link rod 4| is inserted. The link rod 4|, as shown in Figure 3, is offset as at Ma so that the end thereof is in alignment with the bend of the U-shaped arm 45.

Nuts 48 are threaded on the end of the link rod 4| on each side of the flange 48a to clamp the connecting member 46 to the end of the link rod.

, As shownin dotted lines in Figure 3, a shifting of the link rod 4| byrotation of the lock bar 3| will retract the U-shaped arm 45 so as to bring the free end 45a thereof inwardly of the guide arm or link 20 and away from the Weatherstrip 70 V renders it substantially impossible to force the I1. This rotation of the lock bar 3| will also move the free end 3|a. thereof inwardly of the edge of the door It to clear the Weatherstrip l1.

The door III is then unlocked and is free to be swung outwardly into an open position.

A rotation of the lock bar 3| either by opera-' tion of the handle 28 or the handle 40 to bring the lock bar into a substantially horizontal position as shown in Figure 4 will clamp the free end 3 la thereof against the Weatherstrip and will simultaneously swing the U-shaped. arm for thrusting the free end 45a. thereof against the opposite Weatherstrip [1. This will, of course, draw the door l0 into a fully closed position even though the door might have been in a partially open position before either handle was actuated.

In the modification shown in Figures 5 and 6, parts identical with parts described in'Figures -l to 4 are designated by the same reference numerals. In Figures 5 and 6, however, thelock handle 28 is mounted in the center of the door l0 instead of near one edge thereof. The lock bar 3| is replaced with a turn bar fixedly carried on the projecting end of the square rod 29 so as to be rotated when the rod is turned by either handle-28 or 40.

As shown in Figure 6, the lower right-hand corner of theplate 26 is curved as at 26a. A

One end of the bar 59 receives the inside handle an thereon as in the structure described. in Figures 2 to 4. The link rod 4| is secured to the connecting member 46 which actuates the U- shaped arm 45. However, the other end of the arm 50, instead of being free as in Figures 2 to 4, carries a pivot pin 52 pivotally receiving the apertured end of a second link rod 53. This link rod 53 is offset identically with the link rod 4| and is secured at its ofiset end to'a second connecting member 54 by means of nuts 55. This second connecting member 54 operates a second U-shaped arm 55 pivotally mounted on a bracket construction in a manner identical with the mounting of the U-shaped arm 45. The free end of the arm 55 is adapted to thrust against the Weatherstrip H on theopposite side of the door.

In the double arm structure shown inFigures 5 and 6, the door It can actually be drawn into a fully closed position by operation of either handle 28 or 45 for even a greater distance from. closed position. Thus the arms 45 and 55 can begin acting against the weatherstrips l'l even when the bottom of the door ,|0 clears the doorway entirely. The forcing of the door into a tight, fully closed position by the closing unit of this invention is simultaneous with a locking of the door since, when the key 36 is retracted from the handle 28, this handle 28 is free to spin about the rod 29 and a rotation of the handle will not affect the bar which actuates the closing means.

' It should be noted from Figures 3 and 5 that the pivotal connection 41 with the

U-shaped arms

44 and 45 is closer to the edges of the door in than the pivotal connection 44 carrying these arms on the brackets 43. This arrangement door open from a locked position because a mere bending of the link rods 4| and 53 will not permit suflicient movement of the U-shaped arms to clear the weatherstrips l1.

In the modification shown in Figures 8 and 9, parts substantially identical with parts shown in Figures 1 to '7 have been designated by the same reference numerals. In this modification, however, the U-shaped arm is mounted forvertical movement on the inner face of the door and the free end of the arm engages a sill bracket. This ment at or near the center, of the door instead of being mounted for horizontal movement near a side edge of the door, and can engage a sill or floor bracket, instead of the door -jamb, thus eliminating use of long connecting links from the handle to the arm.

As shown in Figures 8 and 9, the sill or door I3 of the doorway II has an angle iron bracket construction is well suited for very wide doors since the arm can be mounted for vertical movemounted. in the center thereof. The leg 60a of the angle iron 60 is bolted to the floor or sill l3 by means of bolts 6|. The leg'60b extends verti cally upward into the doorway II for abutting the inner face ofthe door ID at the bottom of thedoor as shown in Figure 9.

The lock handle 28 is mounted on'the data 7 a convenient level above the bottom thereof and at about the longitudinal center. of the door as in Figures 5 and 6. The turn bar 50 on the inner face of the door, actuated by the'lock handle 28, has a free end 50a and is only pivotally connected 'to one linkrod 4|. The link rod 4|, instead of extending transversely across the door as in Figures 2 to 6, extends downwardly toward the bottom of the door to the connector 46.

The bracket 431s mountedfnear the'bottom of.

The bracket 43 is turned 90 from the positions shown I the door ID on the inner face thereof.

in Figures 2 to 6, so that the flange 43a thereof is in a vertical plane. The arm 45 is pivoted to this vertical flange 43a by means of the pin 44 and the arm is thus mounted'for movement in a vertical plane instead of in a horizontal plane as'in Figures 2 to 6. The connector 46 is connected to the bend of the arm 45 by means of a pin 41.

Rotation of the handle 28, when the key 36 is rotated to unlock the handle, will cause a rotation of the turn barlll, thus shifting the link rod 4| in a vertical plane and moving the arm 45 so that the free end 45a. thereof will either thrust against the inner face of the flange 60b as shownin solid lines in Figures 8 and 9 or will be retracted beyond the bottom. of the door as shown in dotted lines in Figure 9.

The link rod 4| can be connected to the turn bar 50 through an inside handle 40 as in Figures 2 to 6 and this rod may alsolbe provided with an oifset portion so that the lower portion of the rod will be spaced inwardly from the door as shown in Figure 9.

One corner of the mounting plate 26 for the turn bar 50 can be rounded as at 26a and the turn bar can have a lug or pin 5| movable around this rounded end so that the turn bar can only operate throughout a 90 angle.

When the door It, as shown in Figures 8am! 9, is to be locked, the arm 45 is in a retracted position as shown in dotted lines, and movement with the weatherstrips on the sides of the door 7 and doorway this drawing up of the door against the. angle iron will also fully close the door into tight engagement with the weatherstrips.

It will, of course, be understood that various details of construction may be varied through a wide range without departing from the principles of this invention and it is, therefore, not

the purpose to limit the patent granted hereon otherwisethan necessitated by the scope of the appended claims. i

I claim as my invention:

1. In an upwardacting door construction of the swinging type including -a doorway, a door for closing said doorway, a radius arm pivoted to the bottom portion of the door .at each side edge portion thereof and extending along the inner face of the door when the door is in closed position, andbrackets-secured to thevsldes of the doorway pivotally carrying said arms whereby the bottom portion of the door swings from closed vertical position to an overhead horizontal open position supported and guided through said radius arms, the improvements which comprise a U-shaped arm having one leg thereof pivoted to the inner face of the door adjacent a side edge of the door and theother leg thereof adapted to thrust against the side of the doorway to draw the bottom portion of the door into fully closed and locked position, said U-shaped arm in its locking position extending behind and around the adjacent radius arm in the path of movement thereof to further prevent opening of thedoor, and means for swinging the U-shaped arm about its pivot to clear the doorway and radius arm for allowing opening of the door.

2. In an upward acting door construction of the swinging type including a doorway, a door for closing said doorway, a radius arm pivoted to the bottom portion of the door at each side edge portion thereof and extending along the inner face of the' door when the door is in closed position, and brackets secured to the sides of the a doorway pivotally carrying said arms whereby the bottom portion of the door swings from closed 65 vertical position to an overhead horizontal open position supported and guided byfsaid radius arms, the improvements which comprise a first latching member pivoted to the inner face of the door adjacent a side edge thereof and having a.

60 free end adapted to thrust against the doorway for drawing the bottom portion of the door into fully closed and locked position, said first latching member in its locking position extending behind-and around the adjacent radius arm in the 35 path of movement thereof to further prevent opening of the door, a second latching member carried on the inner face of the door at the oppositeside edge thereof havinga free end portion adapted to thrust against the doorway, and com- 70 mon means for moving the free ends of the latching members into and out of thrusting engagement with the doorway while at the same time moving said first latching member into and out open position supported and guided through said radius arms, the improvementswhich comprise a rod extending through the door in spaced relation from the side edges thereof, a turnbar fixedly mounted intermediate its ends on said rod along the inner face of the door, a handle projecting fr m the outer face of the door adapted to rotate said rod ,for actuating the tumbar, links pivotally connected to the end portions of the turnbar and extending along, the inner-face of the door to the side edges thereof, \i-shaped arms pivotally connected to the inner face of the door adjacent the side edges thereof adapted in their locking positions to extend be-- bind and around said radius arms in the paths of movement of said radius arms and having free ends adapted to thrust against said door jainbs for drawing the bottom portion of the door into fully closed and locked position, and means pivotally connecting-said links with said U-shaped arms whereby rotation of the turnbar will shift the links longitudinally for moving the U-shaped arms inwardly from the path of the radius arms and outwardly around the radius arms to thrust against the door jambs, thereby locking and unlocking the door.

4. In an upward acting door construction including .a doorway having side door jambs, brackets secured to the door jambs, a door mounted for movement into and out of the doorway, and radius arms extending along the inner face of the door between the brackets and bottom of the door and pivotally connected thereto whereby the bottom portion of the door swings from closed vertical position to an overhead horizontal open position supported and guided through said radius arms, the improvement which comprises a lock bar rotatably mounted on the inner face of the door adjacent one edge thereof having a free end adapted to extend between the door and the adjacent radius arm for thrusting against the door jamb, a rod pivotally connected to the other end of the lock bar extending across the inner face of the door to the opposite edge thereof, a U-shaped'arm pivotally connected to the inner face of the door adjacent said opposite edge adapted in its locking position to extend around and behind the adjacent radius arm in the path of movement thereof and having a free end adapted to be moved into thrusting relation with the adjacent door jamb, said rod being pivotally connected to said U-shaped arm, and means for rotating the lock bar to move the free ends of the lock bar and u-shaped arm into thrusting engagement with the door iambs.

thereby locking the door while simultaneously