US1560641A - Door-locking mechanism - Google Patents

Description

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Patented Now-1b, 1925.

` UNITED. STATES- PATENT OFFICE.

JAMES E. BALES, 0F AURORA, ILLINOIS, ASSIQNOR T0 LYON METALLIC IIANUFAC- TUBING COMPANY, OF AURORA, ILLINOIS, A. CORPORATION OF ILLINOIS.

DOOR-LOCKING: MECHANISM.

Application led June 25,' 1921. Serial No. 48Q,282.

To all whom'z't may conc-ern.:

Beit known that` I, JAMES E. BALES, a citizen ofthe United States, residing at Aurora, in the county of IKane and State of Illinois, have inventcd`a certain new and vuseful l Improvement in Door-Locking Mechanisms, of which the following is a specification.

Y My' invention 'relates to' door locking mechanisms, especially for clothes lockers andthe like.

the door frame to hol-d the door closed, and a key operated lock which may be less rugged than the latch. The latch is provided with a handle for lifting .it and the bolt of the lock-is biased by Aa spring or otherwise towards acting posit-ion. As a result of my invention the operator can insert the key, rotate it and take it out, and afterwards pay no attention as far as the key is.

` objects of my invention. Another object is to provide door locking mechanism having a key controlled lock havinga spring operated bolt, and a latch adapted to be locked by the bolt. and biased'towards acting position, so that it will automatically latch when the door isA closed and the handle released, and yet will, so long .as the handle is acting, pre- 'vent Vthe projection of the bolt, the mechanism also having a doer servingV as an alternative device for holding the bolt retracted but adapted to move to non-acting position automatically as thedoorp ymoves shut, Contributory objects will become apparent as the description proceeds. A f

I accomplish my obj ects by the mechanism illustrated in the accompanying drawings in which- A i,

Figure 1 is a view showing the inside rof a locker door Vand frame equipped with mechanism embodyingmy invention. l

My mechanisn'f includes a 7 rugged, hand-operated latch for engagmg Figure 2 is a view of a portion 'of the locking mechanism showing the same in a A different position from the one shown in Figure 1.

Figure 3 is a sectional elevation on the line3-3, Figure 1.

Figure 4 is a plan section on the line 4-4, Figure 1.-

Figure 5 is a sectional elevation 0n the line 5 5, Figure 1.

Figure 6 is a. perspective View on an enlarged scale showing the latch lifting andv locking mechanism.

Figure 7 is an enlarged sectional view on the l1ne 4-"4, Figure l.

Like numerals denotes like part-s throughout the several views.

lVhile my device is not restricted to steel i lockers, it has certain characteristics of special. advantage in connection with such i structures, and I have therefore chosen to illustrate the invention as applied to a structure of that type.

Referring to the drawings, the door frame 1 has hinges 2 by which the door 3 is supported. rlhe door has marginal flanges 6, 7

andS, the flange 6 being at -the free 'vertical flange 6. The bar has vertical slots 2l near the top and bottom which accommodate the Shanks of large headed pins 22 lriveted to flange 6. Thus the bar is free to slide up and down a limited distance to raise and lower the latches and cause them 'to disengage and engage the catches 10,11 and 12.

edge of the door, the flange 7 at the hinged i The noses of the latches are beveled on the v under edge so they will ride over the catches as the door moves shut. It will be observed that the latch bar, latches and catches may easily be made (and are shown to be) .com-

.paratively largeand rugged and hence remaui operative at all times, "even though the door anddoor frame be made of very light gauge metal and con uently be subject to a. certain amountof istortion. I n other words, a moderate distortion of the door or door frame, due to the employment of `light f nisin, which need not be described as spring the bolt is automatically held back as soon gauge metal or abuse will not lprevent my locking mechanism from being operative. l

The latch bar niaybe lifted by means of a handle 25 pivoted on a pin 26 carried by a bracket 28 on the front of the door, as shown in Figure and elsewhere, The handle has an arm 30 which passes through a hole 31 formed in a lever 32 fulcrumed on a stationary pin 33 carried by a plate 3 4 fastened t0 the inside of the door as best shown in Figure 7. Said lever at one end' projects into apertures formed in latch and bar 20, as best shown at thef'righbend of Figure 7. When the lever mocks about its fulcruni 33 it raises and lowers the latch- Vbar and the latchesfastened thereto.

At I@he opposite end lever 32-has a lug 38 which overlies the bolt 40 'ofa lock 42 when the bolt is shot or projected, as shown in Figs ures l, 4,*6 and 7'. V The result is that when the lock is locked-that is, when the bolt isvv 32, and hence a small and delicate lock may be used if desired, and yet this will not weaken the construction of the locking mecha- 35. nisni as'a whole.

`Loek 42 is a spring lock, and the bolt is constantly urged outward by spring mecha.-

locks are articles oficoiiii'iion use. lt is op'- erated by a key 44. To now refer to tlie mechanism by which as it is retracted by the VAkey: a tumbler 5() is pivotally mounted upon a pin 51 carried by a bracketz52 bolted or otherwise rigidly fastened to the iiiside of the door and rotatable in a plane parallel to the plane ot the door.4 This tumbler .has a lug '54 which underlies bolt 40 when the' latter is projected,

' as-shown in Figures 1, 4, 6, and 7. This as illustrated in Figure 2. Thus the lug 54' forms a self acting dog for holding the bolt may be regarded as the non-operating posi-V tion of the tumbler. The tumbler is overbalanced, however, and when it is disengaged gravity rotates it to a position in whicliw lug 54 will rise into the path of bolt 40 and hold the latter in' retracted position.

in non-acting position. At the end opposite to lug 54 tumbler 50 hasa lug 56 to which is'pivoted a cam 58 which hangs freely penydant from a pin .59carr'ied by\ lug 56as shown in perspective in Figure 6. The cam 'is free to swing inward' away from the door,

but cannot 'swing in the opposite direction as it is backed'up by the tumbler. The cani The function of the lock isis so constructed that when the door moyes shut' the cam will engage catch 11 and ride up over it, thus lifting the adjacent end of' tumbler 50 and lowering the lug or dog 54 and releasing bolt 40. `In other words, cam 58 constitutes a trip for tilting the tumbler to such position as to release the bolt. When the door is moved open, the cam, being freely pivoted on its pin 59, swings freely andrides over the catch. Operation: When the door is lockedand under normal conditions theparts assume the relative positions shown in Figure' 1. The lug 38 of the latch-lifting lever '32 overlies bolt 40 and lug 54 underlies it and is held down by it. If, now, the operator inserts and rotates vthe key and draws back the bolt he frees the lug 38 and hence makes it possible toflift the latch bar and latches by manipulating the handle 25. The' retraction of the bolt also releases the lug 54 of tumbler SO-and gravity causes the heavier end of the tumbler to drop and to move lug 54 up into the path of the bolt, A

thus Holding it back, as shown in Figure `2. It is immaterial whether the usci-then leaves the key in the lock or takes it out. The

a tumbler will hold its acting position and hold4 the bolt'puslied back until the 'tumbler is tripped. One of the advantages of this con# struction is that although the lock is a springlock, it is not necessary for the operator to manipulate handle 25 while holding the bolt retracted by means of the Ikey. The two operations of rotating the keyand lmanipulating the handle 25 may occur one after the other instead of having to occur -siinultane` "ously and'iequiring two hands for the pur-y pose. As soon Vas the bolt is retracted'it stays retracted until the locker doorhas been without withdrawing the key, may pull on the handle 25 thus rotating the lever 32 and im lifting-@he .hitch bar and latches. As the door swings open the cam 58 willl swing on its pivot and produce no effect upon the tumbler. l Then the operator wishes to close the locker he simply pushes the door shut, whereupon the cam 58 ridesnp over catch'- 11, lifting the adjacent end .of the tumbler -liiu opened, and closed.A As soon as the bolthas ,4105 been retractedvand the lug 54 has moved toV acting position, the operator, either with or and loweiing'lug 54 out of engagement with the bolt; At the same time the latches 14,

15, 16 ride up over the catches 10, .1l and 12 and finally drop into locking position, causing the lug 38 to rise. 'Thusfthe closing lof the door causes the lug 54,146/ descend out of the way of bolt 4 0 and ca'i'ises the lug 38 to rise out of the way of 'the bolt and hence tlie 'spring in the lock moves the bolt outward to locking position and the parts return to the condition shown in Figure 1.

`As previously indicated, my mechanism has atleast two important advantages; first, lthere is no strain on the lock itself. .The

strain comes on parts which are controlled by the lock, but which may be made strong and rugged and of a size enabling them always to operate even though the door'may be abused and bent more or less out of shape. A-second advantage is that when the operator turns the keyv in the lock the bolt will be withdrawn and will stay back under the automatic action of the mechanism, and the operator may release his hand from the key or withdraw the key altogether and subsequently manipulate the handle 25 to lift the latches and release the door. Thus my device aifords the advantage of a spring lock combined with the advantage of operating the key and the door handle in sequence instead of forcing the operator to hold the bolt retracted until the door is opened.

Having` thus described by invention what- I claim as new and desire to secure by Letters Patent is:

l. Door locking mechanism having a latch i for locking vthe door, a handle on the front of the doorfor lifting the latch, a spring urged bolt for .locking` the latchin vacting position, key-operated means accessible by Vkey from the front ofthe door for retracting the bolt, means for preventing 'the bolt from llocking'prematurely including a dog for holding the bolt retracted, andmeans operated by the door frame as the door is closing for moving the dog to release the bolt.

2. A door locking mechanism having a 'i latch for locking the door, a key vcontrolled lock having a spring projected bolt remote from the door frame and adapted when projected to prevent the latch from disengaging the door` frame, a dog for normally holding the bolt retractedLandmea-ns adapted to cooperate with the door frame when the door is closing for causing the dog to release the bolt, the latch therefore remaining "unlocked until the door is closed.

3. In combination, a door and door frame,

'Y a liftable latch for holding the door closed,

v"dog adapted to engage the door frame as a key operated lock-having a spring projected bolt which when projected vprevents the lifting of the latch, a dog `for normally holding the bolt retracted, and a cam on the the door moves shut or moving the dog to non-acting position, thus automatically releasing the bolt upon closure of the door.

4:. In combination, a door and door frame, a latch for holding the door closed, a spring actuated bolt which when projected prevents the lifting of the latch, a self-acting dog pivotally mounted on the door, anda cam on thel dog adapted to elgage the door frame as the door moves shut, for moving the dog to nonacting position, the cam being pivoted to the dog and being adapted to yield-as the door moves open. l

5. In comb1nat1on,a door and door frame,

a vertically movable latch bar, a plurality of latches on said bar for engaging the door frame at a plurality'of points, a lock having a spring actuated bolt for j )reveliting the lifting ofthe latch bar, a self-acting dog adapted to hold the bolt retracted, said dog being adapted to be held non-active by the bolt when the latter is projected, a cam adapted to engage the door frame as the door moves shut for moving the dog from acting to nonacting position, and means blocked bythe bolt when the latter is projected for preventing the lifting of the latch when the bolt is projected.

G. In combination, a door frame, a door hinged to the frame, a latch mounted on the door and adapted to engage the frame for holding the door closed, the latch having a cam whereby it automatically is lifted as the door moves shut and finally drops into acting position when the door reaches closed position, a handle on the outside of the door for lifting the latch, 'a key operated spring lock mounted on the door and having aV bolt retracted, saididog being adapted to be held in non-acting position by the bolt whereby when the bolt is retracted the dog automatically moves to acting position to hold the `bolt retracted, and means carried by the door` and adapted to engage the door frame for moving the dog to non-acting position as the door closes.

7. Door-locking mechanism having a liftable, gravity-operated latch for locking the door, a handle on the front of the door for lifting the latch, a bolt biased towards projected position for preventing the latch from being lifted, key-operated means accessible. by key .from the front of the door for retracting the bolt, a dog foi' preventing the bolt from being projectedlafter'it has been retracted, and means actuatable by the door frame when the door is closing for causing the dog to release the bolt.

8 The combination with adoor, door Vkey for holding the bolt retracted, viz the ,Adetent and the doo' g, one controlled 'manuallyv and the other automatically.

9. In combination, a door and door frame, 'a latch for holdingy the door closed, a

frame, a latch for holding the dobr frame closed,a key operated lock mounted on the door and having a spring actuated bolt adapted to prevent .the lifting of the latch,

' and a dog adapted 'to hold the bolt retract out thereby causing the latch to locked ed, ythe dog being biased toward acting position and being adapted' to be held nony .active by theprojected bolt whereby the bolt, upon being retracted is held retracted to permit the user to withdraw the key With- 'by the bolt.

l1. Door locking mechanism having a hand voperated latch for holding the door closed, a key controlled lock including a spring projected bolt fr locking the latch, a dog for holding the bolt retracted, said detent being biasedtoward lact-ing position,

the 'bolt when projected holding the dog in non-actingl position and releasing the dogupon being retracted, and: means operated -by the door'frame formoving the/dog to non-acting Iposition and thus 4permitting -the bolt to move `to lockingposition; v

12. Door locking mechanism having a 1i ftable latch for holdin the door closed, a key controlled lock inclu 'ng a spring projected Cbolt for locking theI latch, a dog lfor hold.- 'ing the bolt 1'etracted,.said detent being biasedv toward acting position, the bolt when projected holding thev dog in non-acting position and releasing the dog when the bolt is retracted, means operated by the door frame for moving the dog to non-acting position,l a handle for lifting the latch vand means operated by the handle for preventing the lock boltfrom being projected when the latch is in non-acting posit-ion.

13. Door-locking mechanism havingv a latchgfor locking the door, said latch being' manually liftable, .an independent, manually retractible bolt for preventingxthe latch from being lifted, a spring, for normally holding the bolt projectedin locking posi'v tion, a dog for preventing the bolt from being projected, and -1'neans adapted to cooperate with thc door frame when the door lis closing for causing the dog to release the bolt and thereby permit the bolt to move to projected, latch-locking position.

14. Door-locking mechanism having a latch for locking the door, said latch being biased toward locking position, a bolt remote `from the edge of the door for preventing the latch from being unlocked, a .spring for kurging the .bolt toward locking position to lock the latch, Vkeyoperated means accessible by key from the front of the door for retraeting thenbolt, a stop for holding the bolt-retracted, said stop being biased toward acting position and beingr held iu non-acting position by ,the bolt when the latter is projected whereby the retrac tion of the bolt will release the stop and permitit to move to acting position, and means adapted to cooperate with the door lframe when the door is closing yfor tripping the stop" and causing it to release the bolt -and thereby permit the spring to` projectthe bolt to lock the latch. 1

' In witness whereof, I have hereunto sub.- s'cribed my name.A

I JAMES E. BALES.

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