US1639086A - Door lock - Google Patents

Description

DOOR LOCK Filed July 31, 1925 2 Sheets-Sheet 1 K m R D E R F P. Im

Aug. 16, 1927.

DOOR LOCK Filed July 51, 1925 2 Sheets-Sheet 2 m a; FWWMW:

Patented Aug. 16, 1927.

PATENT OFFICE.

omen JOSEPH P. rrmimrck, OF CHIC GO, rumors. ns srqnon or ONE-HALF 'ro AUGus'r J.

' 1.1mm, or CHICAGO, ILLINOIS.

noon "Look.

Application filed July 31', 1925. serial No. 47,231. v

My invention relates to locks and more particularly. to lo cks for double doors such as are customarily used in garages wherein the doorsja're locked at the top and at the bottom of their juxtaposed vertical edges.

The present application is an improvement upon the subject matter of my prior Patent No,1,53l,584.issued April 21,1925. This prior patent, and the present application, are both concerned with the provision of an easily and quickly opened fastening means for thedoor, such that a single key may be inserted ina conveniently located lock, the turning of the key releasing the door latches at the top and bottom of the o Some'of the objects of the present invention are: to provide a simplified form'of latch mechanism; to proyide an improved construction of housing for thislatc'h operatlng mechanis'm; to provide an extensive range of adjustment ofboth the latch operating rods and of the locking shoulders that the latches engage; to provide latches which will always be supported in proper position to r'e-engage these shoulders when the door is open; and to provide a self-aligning construction of rotary element for connecting the lock mechanism to the latch actuating mechanism. V

These and further objects andfeatures of my invention are set forth in'the following description of a specificembodiment thereof. ln the accompanying drawings which illustrate such an embodiment-z. V V Figure 1 is an elevational View of the interior side of a double door of a garage provided with the lock of my invention;

I Figure 2 is a transverse sectional view through the door illustrating the present lock mechanism in side v elevation.

Figure 3 is a longitudinal sectional view through the housing and latch mechanism on a plane parallel tothe door. 7

Figure 1 is asiinilar view on a plane at right angles theretou e p H v Figure 5 a perspective view showing the two halves of the housing. H I

Figure 6 is a horizontal sectional view taken approximately on the plane of the line 6 6 voflligure 4;. V

Figure 7 is an upper plan View of the upper latch and its associatedlocking shoulder, 7

this view being taken approximately on the plane of the line 77 of Figure 8.

Figure 8 is a vertical sectional view taken approximately on the plane of the line 8-8 of Figure 7, and Figure 9 is a vertical sectional view through the latch at the lower end of the door. I i v I p The double door here shown comprises doors 12 and 13, hinged at their opposite vertical edges to the door frame, the free edge of the door 13 preferably being provided with a strip 14 for over-lying the adi acentedge of the door 12, so that the door 13, when, locked, will prevent opening of the door 12. p i H The present locking means comprises an upper latching device 16 for the upper edge of the door, a lower latching device 17 for the lower edge of the door and lock released operating mechanism 18 mounted at an intermediate point on the door 13 and .operatively connected to said upper and lower latching devices, v

The. upper latching device comprises a latch 21 pivoted to a bracket 22 secured by screws zero the door 13 (Figures 7 and 8); The latch is pivoted on a pin 24; extending between two ears 25 projecting from the bracket'22. The hook end 21' of the latch is adapted to engage over thedropped intermediate portion 2620f a stationary latch bracket 26. This bracket has relativelywide attaching ears 27 which are slotted at 28 to receive the fastening screws 29. The slots 28 permit inward and outward adjustment of the bracket 26 so that thelatch 21 will drop over the locking shoulder 26 -when the door is completely closed. This bracket can be easily constructed in the form of a stamping of relatively heavy sheet metal. a V i a When the door 13 is open it is desirable that the latch 21 be supported in proper horizontal position. whereby its curved front end 31'can cam itself over the dropped shoulder portion 26' as the door isswung to closed position. The support of the latch in this proper horizontalfpos'ition is obby extending a tail 32 back from the pivotal center of the latch for engaging the underside of alug-or shoulder 33 on the bracket 22, thereby preventing the latch froi'n. dropping down to a point where its sloping end 31 would not engage the front edge of the latching shoulder 26'. The shoulder 34 on the latch 21 is also adapted to strike this stationary lug 33 on the bracket to prevent the latch from being thrown too high where it might strike the upper door j amb or rail in the closing movement of the door.

Extending from the bottom-of the latch are two spaced ears 35 between which is pivoted the flattened end 36 of anoperating rod 37. This operating rod extends down to the lock released operating mechanism 18, which 1 shall presently describe.

The lower latching device 17 comprises a somewhat similar latch 41 which is pivoted between ears 42 projecting from a bracket 43, secured to the door 13 by screws 44. The hook end 41 of this latch engages over the upwardly turned flange 45 constituting part of a latching floor plate 46. This floor'plate also has transverse slots 47 therein for the cap screws 48, these slots permitting inward and outward adjustment of this floor plate similar to the adjustment of the upper bracket 26.

This latch also has a tail portion 49 adapted to engage the underside of a stop shoulder 50 formed as a part of the bracket 43. This tail portion striking this stop shoulder prevents the latch from dropping down below a position where its curved front end 51 will cam itself over the locking shoulder 45; and the co-operating shoulder 52, directly above this tail portion 49 also prevents the latch from being thrown up too high. Extending upwardly from the top of this latch are two spaced ears 53 between which is pivotally connected the flattened end 54 of an operating rod 55 which extends up to the latch operating mechanism 18.

Attention is directed to the fact that the weight of each latch is effective to drop that latch to an engaging position, and that the weight of both latches is supplemented by the weight of the two operating rods 37 and 55, both of which move downwardly when the latches drop into latching position.

The lock released operating mechanism 18 comprises a housing 57 which is aflixed to the inner side of the door 13 at a convenient height for the insertion of the key. The present locking device is operated entirely through the instrumentality of the key 58, the insert-ion of this key, unlocking the lock mechanism and the rotation thereof lifting the latches to unlock the door. This key is effective to rotate any-rotary element com prising partof a suitable lock. The conventional pin-tumbler type of lock is preferable for the present use and accordingly I have shown such a look at 59, inserted in a bore 61, which is drilled through the door 13 structed of sheet metal stanipings. The front wall has a circular depressed area 67 which is drawn into the rear end of the bore 61 in the mounting of the housing Two diametrically opposite apertures 68 in this depressed portion 67 receive long screws 69,

Figure 6, which thread into tapped holes 1 in the rear end of the lock body 59. By drawing up on these screws, the lock 59 and the housing 57 are drawn into firm engagement with the door 13 and the body portion of the lockis also held against rotation in the bore 61.

The rotatable plug portion 71 of the lock preferably has its rear end slotted as indicated at 7 2, and in this slotted end is pivoted the tongued end 73 of a rotatable shank 73.

1 his shank is of substantially square cross section and is threaded over a considerable portion'of its length, the thread being cut This in the corners of the square section.

rotatable shank passes through a hole 74 in the depressed portion 67 of the front housing plate, and is extended through this housing and out through an opening 75 in the rear housing plate 66. The pivotal connection and the slight lateral play of the tongued end 73 of the shank in the slot 7 2 afford a limited universal joint movement and avoid the necessity of accurate alignment of the shank 73 with reference to the lock 59 and the apertures 74 and-7 5 in the housing. 7

The rotation ofthis shank 73 is effective to actuate a follower or guide bar 76 to which the upper and lower rods 37 and55 are, connected. This bar is guided in slot likeopenlugs 77 in the upper and lower walls of the housing 57. The ends of the bar are turned laterally away from the door and have threaded bosses 7.878 formed thereon for receiving threaded ends of the rods 37 and 55. This bar'carries a roller 79 rotatably mounted on a pivot pin'81-secured in the bar. Directly below-this pivotpin. thehar has a longitudinallyextending slot 8:? formed therein through which passes the shank 73.

lifounted on the shank '73 on the rear side i of the bar 76 is an GCCBHtTICB consisting of a circular disc or roller having an eccentric located bore therein. A hub 341s rigidly driven into this eccentric bore. This hub has a neck portion extendingthrough the 7 The hub 84 has a bore ofsquare section at one end, snugly to receive the shank 7 3, the other end being of slightly enlarged cylindrical section to facilitate passing the shank therethrough. Two nuts 87 screw over the end of the shank and bear against the eccentric 83, thereby preventing the lock 59 from being pulled out of the end of the bore 61.

The two plates which form the housing 57 are stamped out substantially as shown in Figure 5. The front plate 65 has end flanges 88 \VlllCll-vfOIDLl the topand bot-tom.walls of the housing. Eachofthese end flanges has its center portion notched out as clearly shown in this figure. The other plate 66 has end tongues 89 which take into the cut-out portions of the flanges 88 to a depth sufficient to leave the slots 77 through which passes the actuating guide bar 76. This latter piate 66 has side flanges .91 which form the side walls of the housing. Projecting laterally from the edges of these side flanges 91 are apertured cars 92 which are adapted to align with corresponding ears or lugs 93 projecting from the other housing plate 65. Screws 9% pass through these alined pairs of ears and rigidly fasten the housing to the door. The front housing plate 65 may have an additional pair of apertures 95 for receiving screws 96 adapted to anchor the front plate to the door before the assembly of the housing.

One or both of the operating rods 37 and may be jointed into two sections, such as by the provision of an internally threaded socket 97 on one of the sections receiving the threaded end of the other section, as shown in Figure The ends of the rods which screw into the bosses 78 on the actuating bar 76 may be threaded over considerable portions of their length to afford a considerable range of linear adjustment of these rods, the excess portion of each rod projecting beyond the hub 78after adjustment of the device being cut ofl. The screw threaded adjustment of these rods in the hubs 78 is, of course, made before the tongued ends 36 and 5% of these rods are finally connected to their respective latches- In the operation of the device, it will be apparent that rotation of the key 58 from the position shown in Figure 4 will revolve the rotatable element 73 and eccentric 83, which eccentric, acting through the roller 79 will raise the actuating bar and associated rods and latches. When the key is revolved back to its normal position the eccentric 83 is swung down to the position illustratedin Figures '3 and 4, and concurrently therewith the actuating bar and its associated rods and latches move down under their own weight to bring the latches into lockingposition, The lock is preferably so designed that the key 58 cannot be'removed until the eccentric 83 has been rotated down to a position where locking devices for the upper and lower edges of the door, a housing secured to the rear side of said door, a bar reciprocably supported in said housing and extending above and below the same, rods connecting said bar to said locking devices, a roller pivoted on said bar, said bar having a slot therein, a lock released rotary element extending through said slot, and eccentric means on said rotary element for engaging said roller.

2. In locking mechanism of the class described, the combination of upper and lower locking devices for the upper and lower edges of the door, a reciprocable actuating bar, means for guidingsaid bar, means connecting said bar to said locking devices, a roller on said bar, said bar having a slot therein, a rotary element extending through said slot, and an eccentric on said rotary element for engaging said roller.

3. In locking mechanism of the class described, the combination of upper and lower locking devices for the upper and lower edges of the door, a reciprocable actuating bar having a thrusting surface operatively connected to said locking devices, said bar having an opening therein, a rotary element in said opening, and means actuated by said rotary element adapted to engage a thrusting surface on said bar for reciprocating the latter.

4. In locking mechanism for garage doors or the like. the combination of upper and lower latches, pivot brackets secured to the upper and lower edges of the door on which said latches are pivoted, stationary locking shoulders adapted for engagement by said latches, a vertical reciprocable actuating bar having threaded hubs at its ends, rods screw- 7 5 ing into. said hubs and pivotally connected to said latches, means for guiding said actuating bar, and lock released means for re- 7 ciprocating said bar.

5. In-locking mechanism for garage doors and the like, the combination of pivot brackets secured to the upper and lower edges of the door, upper and lower latches pivotally supported on said brackets. a reciprocable actuatin bar, rods adjusta-bly connected at.

their enc s to said actuating bar and pivotally connected to said latches, a housing comprising front and rear sections. flanges on each of said sections forming walls for the housing, the end flanges being spaced to provide guide slots for said actuating bar, said housing being secured to the rear side of the garage door, a cylinder lock mounted in a bore in said door, said bore extending through said door to said housing, screws passing through apertures in the front housing section and engaging holes in said lock, a shank pivotally connected to the rotatable cylinder of said lock and extending through bearing apertures in the front and rear housing sections, an eccentric on said shank, and a roller pivotally mounted on said actuating bar adapted to be engaged by said eccentric.

6. In locking mechanism of the class described, the combination of upper and lower locking devices for the upper and lower edges of the door, lock released operating mechanism connected to said locking devices, and a housing for enclosing a portion of said operating mechanism, said housing comprising a front housing plate and a rear .housing plate, said front housing plate having upper and lower flanges having their central portions cut away, said rear housing plate having side flanges and having end tongues extending into the cut away portions of the end flanges oflsaid front housing plate, there being formed guide slots between said tongues and the bottoms of said cut away portions for guiding the reciprocable actuating bar of said lock released operating mechanism.

7. In a device of the class described, the

combination of upper and lower latches for the top and base of a door, means connecting said latches for simultaneous operation, adjustable fixed locking shoulders for said latches comprising a stamped sheet metal U- bracketwith out-turned feet and a stamped sheet metal. L-bracket and stop means to hold one of said latches in camming relation to enter said U-bracket.

I 8. In a device of the class described, the combination of reciprocating latch operating means, actuating mechanism for said means, a casing for said actuating mechanism comprising complementary parts adapted to enclose said mechanism and provide guides for said reciprocating means, a closure having a bore, and a stamped depression in said casing to co-operate with holding means to align said casing with said bore.

In witness whereof, I hereunto subscribe my name this 22nd day of July, 1924.

JOSEPH P. FRED-RICK.

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