US1355735A - Combined latch and lock - Google Patents

Description

E. CRDMPTDN AND C. L. CROOKS.

COMBINED LATCH AND LOCK.

APPLICATION FILVED AUG.5, 1918- Patented Oct. 12, 1920.

www amk 4@ UNITED STATES EDWIN CROMPTON AND CHARLES L. CROOKS, OF PUEBLO, COLORADO.

COMBINED LATCH AND Loox.

Specification of Letters Patent. Patented Oct; 12 1920.

Application mea August 5, 191s. serial No. 248,320.

To all whom t may concern.'

Be it known that we, EDWIN CROMPTON and CHARLES L. CnooKs, citizens of the United States, residing at Pueblo, in the county of Pueblo and State of Colorado, have invented certain new and useful Improvements in Combined Latches and Locks; and we do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in theart to which it apper' vact of closing the door, and in which the unlocking and unlatching operation may be performed without the use of keys or similar devices by depressing a single operating Ishoulder 21 and against the inner face of member. Y

In its broaderf aspects, our invention comprises a casing that is adapted to be mounted on or within a door jamb. The casing incloses the operatively connected portions of.

the elements which include a locking or latching bolt resiliently projecting from the casing in-the normal position of the device, p andy asecond bolt normally projecting from the casing and adapted to lock or dog a spring-pressed ,plunger which, when released, engages and locks or dogs the locking or latching bolt.

The vobjects and novel features of the invention will be apparent from ftheV following description taken in connection with the drawing in which*- rie'dibv thedoor being shown'as about'to Figure 1 is avertical sectional view of a combined latch and lockembodving our invention. the parts beingshownin normal or unlocked position. and the `keeper' car- Y move into'c'losed position; l

Figa2 is a vertical'sectional Aviewsi'milar l to Fig..1except'that the keeper lis shownin' vposition'with the parts in latched and locked position;

Fig. V3is a transverse vertical 'sectiony f taken on the use s aoffrigp;

:Figs 4 and 5 are horizontal y'sectional views taken. respectively, on the lines 4--4 and 5'5Vofk Fig. `2; an r F ig. 6 is a face view of the keeper that is adapted to be attached to the door.l

Referring to the drawing, 10 designates the casing that contains most of the operating mechanism of the device, the casing comprising side plates 11 formed integral with an end plate 12 to which the face plate 13 is secured.` 'The end plate 12 and face plate 13 are provided with registering Vapertures 14 and 15, arranged vertically above one another and. providing openings through which the bolts A and B are pro-` jected in the normal or unlocked position 11. A spring 20 surrounds the reduced por' tion 17 of the bolt A and bears against a the cross brace 19, tending to project the belt through vthe apertures 14. The outward movement of the bolt A is limited by a stop pin 22 carried by the bolt. The bolt B has a semi-spherical head 23 and is slidable in an aperture 25 in the Vcross brace 26 in line with the apertures 1,5. The brace 26 is below the brace 19 and also seycured to theside plates 11 of the casing.

The vcasing is thus substantially open atthe rear except for these braces. A spring 27 surrounds the rear end of the shank 24, one end thereof bearingY against the inner face of the cross brace 26 and its opposite end i bearing against a pin 28 carried b v vthe bolt. The spring 27 rcsiliently presses the bolt, B

outwardly to project the knob 23 from the face plate of the casing, the outward movement of the bolt being limited by an enlargement29 carried by the bolt.

The locking and unlocking plunger P consists of a comparatively Vlong -rod 4,substan-v tially rectangular'in section and isreciprocable in guides formedby apertures 30 and '31 in cross braces32 and 33. VThe lower end of the plunger P isgreduced as alt-34 to provide a shoulder 35 forming a bearing for #the upper end 'of the actuating spring 36 `that projects outwardly through the apertures 1'5 and-is carried by a shank 24 that is substantially rectangular in cross section plunger,

bolt

ceive a portion of the rectangular part of Y the ,clogging bolt A when the latter is in its normal or projected positionas seen in Fig. 1. The engagement of the notch of the plunger P by the bolt A locks o r dogs the plunger in a depressed position presses the spring 86, storingV energy in the latter so that when the bolt A unlocks the the latter will be projected upwardly to notch 42 of a size and depth to permit the upward movement ofthe plunger past the bolt when the latter is retracted. At the saine time a portion ofthe plunger moves into the notch 42 and locks lor dogs the bolt A against"V outward 4 movement until the plunger is again depressed.

Y 1n the normal or unlocked position of the i device as shown'in Fig. 1', the'bolt B is freely spring movable inward against the pressure of the'` 27 since the notch 41 of the plunger registers with -t'he shank 24 of this bolt. The

shank 24'also has a square-shouldered notch ..43 in the side thereof Vfacing vthe plunger so that in the normal unlocked and unlatched position of the device thefplunger may moveV transversely ofthe bolt' B.

' Upon releaseVY of the plunger vby the inward movement of the boltV the spring 36 moves the same upwardly and a portion of the plunger 'below the notch 41 enters the notch 43 on the bolt B,thereby locking or .clogging the latter against lmovementV inwardly or outwardly.

[A keeper designed for useV with the latch Y and lockembodying this' invention is shown vin Fig. 6, and comprises a face plate l45 attachablet'o the edge of a door.V The plate has la ychannel portion l46 provided Vwith a 'cam surface 47 thatis adapted to engage the Y cui-ved projectingend=48v of therrblt A. vThe plate also'has formed'integr'ally therewith a lip 49 disposed in advance of adepression or socket 50 adaptedto receivethe'knob 23 on thebolt B." The lip V49 has an inner cam A it to'fpass over a shoulder j52that *locksV or surface 51 byfmeanspf which the knobV is retractedupon *closingv the door to permit y latchesitin place. f

'Assuming the lock'andlatch to be in itsV normal or unlocked-position as-'show-n `in A Fig. 1, the operation of the device is as foland comy ressedfto permit it to pass over the shoulc er 52 and at the saine time the bolt A is being forced inwardly by the cam 47. After the knob 23 ofthebolt B snaps into the socket 50 theV notch 4,2.on the bolt A moves into register with the plunger, releasing the latter, which is shot upwardly bythe springr36. .This moves the plunger so that.' a portion`ther`eof will be located in thenotch 434 of the bolt B, locking or cloggingthe knob 23 of :the latter in the socket 50, as shown in Fig. 2.

In order t'o Vopenfthe door, the button 38 is pressed downwardly forcing ithe plunger into the position in which the notchA 41.

registers with the shank 24of .the bolt B, y

whereupon the door may be opened gently pushing the same outward. The bolt A will thereupon be shot out by the spring 2O and willl lock the plunger in its depressed Y or normal position. lock or dog the bolt B. The A is provided with a squareshoulder combined lock and latch in detail itis to be undeistood'that various' features thereof may be modified 4without ,departing from the spirit of theinvention. ,i What Awe claimis:

1. A latch comprising a Alocking and'un-V locking plunger, means releasable by a keeper for retaining said plunger in unlock- V'ing position,Y aA bolt, saicl 'plunger being adapted to engage said bolt, vand IlQLIls` Y whereby the plunger is moved into .position to lock' said bolt when said retaining'ineans Y is released.'v p y. 2. A latchvcomprising a locking and un- While we have shownV and deseribed'oui'. s

locking plungergtwo bolts .adaptedrjandarf Y ranged for engagement. by. keeper means,

.said bolts being movable transversel'yof said plunger, one of saidbolts treleasal'ily locking said plunger in said position, and, means whereby the plunger is inoved intoposition to lock the otherbolt whensaid .lockingb'olt lis released. A

' .3. VAV latch comprising two; bolts adapted and arranged for engagement* by Va suitable keeper on a door jainb, avplungerfand means 1 whereby said plunger is normally .releasably' locked or dogged by onel of Ysaid bolts, and

adaptedto engage .andlock 1or dog the .other bolt .whenreleased by the `operation Ve'f ,the [i :first mentioned bolt. x Y n K 4. latch ycomprising'..two bolts,ifa;plun ger extending across both boltsa-nd having fmeans at' 4one .end for manually foperating it,

means whereby said plunger- .is :releasably locked or dogged by one of.saidbolts,means whereby the other bolt is locked'orgdogged by saidplunger. when the latter is released,

andY means vfor. actuatingthe plungerywhen itv yitireleased. s. Y I Y A5'. A latch comprising-.Afa depress'ible',plun;..- f ger, Y an actuating spring surrounding .the

saine in which energy is stored :when Asaid l plunger is depressed, means for releasably locking said plunger in its depressed position, a bolt, and means whereby said bolt is locked when said plun er is released.

6. A latch comprising a plurality of notched bolts, and means, comprising a notched plunger extending across both bolts, whereby one bolt controls the movement of the other bolt.

7. A latch comprising a pluralit of spring-pressed notched bolts arrange one above the other, and a spring -pressed notched plunger extending above the upper bolt, the arrangement being such that one of said bolts locks or dogs said plunger in the normal position of the device and said plunger is actuated to lock or dog the other bolt when the plunger is released by a movement of the bolt that normally locks or dogs it.

8. A latch comprising a depressible plunger, an actuating spring therefor in which energy is stored when said plunger is depressed, a spring-pressed bolt for releasably locking or dogging said plunger in its depressed position, and a second bolt, both of said bolts extending across said plunger and being movable transversely of said plunger in the depressed position of the latter, and the plunger being automatically moved into position to lock or dog said second bolt when the other bolt releases said plunger.

9. A latch comprising a depressible plunger having two notches, a depressible bolt engaging. a shoulder formed byone of saidv notches and locking or clogging said plunger in depressed position in the normal condition of the device, said bolt having a notch ldisposed within said casing and a part at its upper end accessible from the exterior of said casing for manually depressing the plunger, an actuating spring therefor in which energy is stored when said plunger isl depressed, means for releasably locking said plunger in its depressed position, a bolt having a head projecting from saidcasing and a shoulder within the casing, the arrangement being such that a part carried by said plunger engages said shoulder to lock said bolt when the said locking means is released.

1l. In a lock, the combination of a locking bolt, a spring surrounding said bolt for actuating it, a device for retaining said bolt in its locking position, such device being removable to release or unlock said bolt, a spring surrounding said device for moving the same to lock said bolt, means for retaining said device in the position in which it releases or unlocks said bolt, and a spring surrounding such retaining means for operating the same..

In testimony whereof we hereunto aix our signatures. f

EDWIN CROMPTON. CHARLES L. oRooKs.

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