US1451265A - Lock - Google Patents

Description

Apg. 10, 1923. 1,451,265

W. H. LANDING LOCK Filed Apr. 4, 1922 Patentes am. io, ieee.A

'narran va,ir-.arne.

WILL'IAM E. LANDING, ,OF SANTA AHA, CALIFORNIA., .PrSSIG-NOR OF CNE-HALFT innate .AL LINDSEY, S-LNTA NA-i, CALIEORNA.

I` LOCK.

Application inea april i,

/ 1o @ZZ whom t may concern:

Ble it known that I, WILLIAM a. citizen or the United States, residing at Santa Ana, in the county or" @range and State of California7 have invented certainA new and useful improvements in Locks7 of which the'following' is a specilicationi 'hisvinvention relates to door loclrsand has Jr'or its object the provision of means whereby a door may be securely fastened in closed position and cannot be opened except by manipulation of a key in a` predeterminedv manner. The invention seeks to pro- V. vide a lock in which the bolt will be normally retracted but may be projected into locking position bv the use of a key, and a further object ot the invention is to provide a combined latch and lock which may be released through theuse ofa single key but will require the operation oli' that key in two stages. The severalstated objects and other objects which will incidentally appearv the parts when the latch is withdrawn but the bolt is still projected;

Fig. 4 is a similar view` showing both latch and bolt retracted.

Fig. 5 is a detail perspectivey view of the pivoted dog; l

Fig. 6 is a 'detail perspective view of the slidable dog. v l y rThe lock case '1 is illustratedfas of the form adapted for a mortise lock and is preferably cast in one piece with the excep tion otthe'closing'fa'ce plate 2, as will be readily understood. .The lock case receives and slide-bly supports a latch 3 and a bolt Il and also receives and rotatably supports a knob spindle 5 which is disposedk transversely in the lock between the latch and the bolt. Within the loclrrcase, the knob spindle is-equipped with a pinion meshing lil.k Lemoine,` i

1922. Serial No. 549g`583.

with a rack l on the under side'of the latch,i yand a dog 8 is pivotallv mountedwithin the Y loclr case in position to engage said wheel 6 and normally hold the'latch Aproi'ectedbyy end secured to a post l11 lined on theback 'of the lock case and its opposite end held'by a poet 12 in the forward end oftheslotl), as cearly shown. `i6/'hen the dog Sis released trom-the pinion 6, the spring 10 at once retracts so ,as to withdraw the latch,

andmanipulation of the knob spindle is not necessary. Vhen' it is desired'to `project the latch intoengagement with'the lock strike or keeper, the knob spindle is rotated in the proper direction to impart movementot the latch through the engagement of the pinion l 6 and the rackv 7 in an obvious manner.

During this movement of thewheel .64,

teeth of the same willride under the 'dog 8,

which is yieldably held in engagementwith f the wheel by a spring 13 coiled around the y pivot of the dog and having one end bean.,

ing upon the dogand its opposite end bearing upon a lug14 provided in theloclr 'casa rPhe bolt l is also'provided in its rearv end `portion. with a longitudinal slot or' notch 15 saidl notch,one end of said spring -being'hfeldv and a retractile spring 16 is housed within by a fined 'lug 17 on the baclr loi? the loclr 'l case and its opposite end being connected with a'lug 18 at thev front end the notchl 15. The bolt is provided on its upper side,

with a lug or projection 19 which may be engaged by a lrey when the bolt is to be projected and the outer or forward movement` `of the bolt is limited bythe said lug 19 impinging against a stop lug 20 'within the' lock case. The rear end Iovl" the bolt is adapted'to beengaged bythe lowerend 21 of aldog 22 slidablymountedupon the baclrf4 ot the lock case and provided withk a cylindrical stern'23l playing'inthe lug 14. A pin or. other abutment 24: .is provided at the upper end of the stem 23 vto engage the lug 14 and thereby'limit the downward movement of the dog, and a `spring 25 is coiled around the stem between the Isaid lug 14 and the shoulder 26 of the dog to normally project the dog downward. When the dog is at the lower limit of its movement,` as shown in Figs. 2 and 3, the rear upper corner of the bolt will bear against the vertical face of the dog at the lower end thereof and will,

therefore, be held in a projected position. If the key, however, be inserted in the lock case so that it occupiesa horizontal position,"the rotataion of the key will lift the dog ,22 from its engagement with the bolt,

` whereupon the spring 16 willl at once retract and withdraw the bolt. The lug 19, how- ,.ever, will vbe moved against the stem of thc key through the retracting movement of the bolt and.` therefore, the bolt lcannot be fully retracted until the keyl is withdrawn. When the bolt is to be again projected, the key is 'n inserted inv a vertical position and is then rocked so that it will actv upon the lug IS) and project the bolt, Athe dog 22 automatically sliding downwardly and assuming its position in rear of the bolt. i n

y It will be readily noted that the keyhole v27 is cruciform so that the key may be insertedin either a vertical or a horizontal position. When it is desired to release the dog 8 from the wheel G, the key must be inserted in a vertical position and rocked, las indicated in Fig. 3, so as to bear upon the lower end of said dog and thereby rock. .the same so that its upper end will be released from theA wheel. lIhe key must be held in engagement with vthe dog until the latch isfully retracted. The parts are so proportioned that `when the key is inthe position indicated in Fig. 3, it cannot engage the vertically movable dog to release the bolt and when the bolt is retracted the key cannot be inserted' in a horizontal position. Therefore, it is necessary in opening the door to first release thel latch and then withdraw the key and reinsert it so as to lift the dog 22 and permit the bolt to bev retracted. In locking the door,f the bolt must be first projected by inserting. the key in a vertical position with its stem at the upper end of the vertical branch of the keyhole in order to ,first project the bolt. After the bolt rhas been projected, the key may then be inserted in a vertical position so as to rocky upon the lower e-nd of lthe vertical branch of the keyhole and releasethe dog 8, whereupon the spring l0 will at once project the latch. j

It will be readily noted that I have provided an exceedingly simple lock composed of few parts which may be, therefore, j produced at ay low cost and which will be oundhighly elicient in use.

Having thus described the invention, what is claimed 'as'new is:

l. In a lock, the combinationbf a lock case provided with a cruciform keyhole, a latch mounted in thel'ock case above said keyhole, a bolt slida'bly mounted in the case below the keyhole, said bolt when retracted being adapted to partly cover the keyhole, means for projecting the latch, yieldable lmeans iiorholding the latch projected, and yieldable means -For holding" the latch and the' bolt normally retracted, they means for holding the latch projected being releasa'ble by a key itted in the keyhole in oneA position and the bolt being vconstructed toibe projected by the same key inserted in the keyhole in another position.

2. The combination of a lock case, a keyprojected bolt slidably mounted therein,`

yieldable means orfholding the bolt normally retracted, a dog slidably mounted in the lock case, yieldable means for automatically projecting the dog into engagement with the rear end of the bolt las the bolt is projected, andmeans for limiting the projecting movement of the bolt.

3. The combination of a lock case, a bolt slidably mounted therein `and provided on its upper side near its inner end withV a lug to be engaged by a key to permit the bolt to be projected, a retractile spring connected with the lock case and the bolt tohold the bolt normallywithdrawn, a vertically movable ,dog slidably mounted uponthe lock case and adapted to engage the rear end of the bolt in the projected position of the latter, yieldable lmeans holding the dog to the bolt, and a key insertible into the lock. case and engageable with the boltA in one position to project the same and engageable with the ydog in another position to release the same and permit retraction of the bolt. f

4. The combination with a lock case, of

a latch mounted slidably therein and provided with` rack onits lower edge, a knob spindle rotatably litted lin the case, a pinion on said spindle meshing withy the rack on the latch, a retractile :spring'connected with the latch and with the lock case to normally hold the latch retracted, a ydog pivotally mounted within fthe lock caseand yieldably engaging the pinion, and-a key to be inserted in the lock case and engagevable with v the'dog to release the same.

In testimony whereof Il aliix my'. signa ture. l

lWILLIAM i H. LANDING. [L sil

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