US2424782A

US2424782A - Door lock

Info

Publication number: US2424782A
Application number: US573339A
Authority: US
Inventors: Henry G Voight; William S Edwards
Original assignee: Sargent and Co
Current assignee: Sargent Manufacturing Co
Priority date: 1945-01-18
Filing date: 1945-01-18
Publication date: 1947-07-29
Anticipated expiration: 1964-07-29

Description

.'July 29, 1947. H. G. `vcucsn-rr ETAL 2,424,78'2 A' DooR Loox Filed Jan. 18, 1945 2 Sheets-sheet 1 Patented July 29, 1947l Henry G. Voight and William VSL Edwards, Hamden, Connaassignors to.` Sargent- & Company,

New Haven, necticut Conn., a corporation; of (Jon-` Appiicauon January 1s, registral-1N, masas This invention relates to door locks and more particularly to a lock designed to be used in connection With a front door of a building ordwelling, although it will be understood that the principles of the invention may be applied to locks for other uses and for doors employed in other locations.

In the manufacture of lock-s it is desirable to construct the lock so that it may be used with a door of eitherhand, regardless of which edge of the door may be the hinged edge. In'theV ordinary mortise lock this result is oftenL achieved by so constructing the latch bolt of the lock that it may be reversed in position. However, it oftenv occurs that in removing the latch bolt for reversal, parts of the mechanismare disturbed so that the reversal of the bolt is attended by considerable inconvenience, Also in the case. of a door which employs a so-called guard bolt or aux` iliary bolt controlling a latchclogging member, it is impossible to reverse the latch bolt asthev hole in the strike plate is not symmetrica-L'the auxiliary bolt usually being received in a portion of the same opening in which the latch bolt is received.

The present invention relates to a lock of thel type in which an auxiliary or guard bolt isr provided to control a latch dogging member and isdesigned to provide a lock which may be readily and` cheaply manufactured and, at the Sametime, will be applicable to doors Which open in either direction and which may be hinged at eitheredge;

Moreover, the lock case in the present instance-` is one of tubular form so that it may be-readily inserted in a bore through the edge of the door and also may be made of wrought metal, thus being less expensive than the usual cast metal door locks.

As shown, the lock is provided with an auxiliary case or bolt case Which may be removablymounted at the forward end of themain case, thev bolt case containing the latch 'bolt andy protracting bolt spring and also containing the guard bolt and associated parts. This auxiliary case` and bolt mechanism is so constructed that it may be inserted in the main case as a unit and may bereversed in position relatively to the maincase so that the beveled edge of the bolt may facev ofthe parts or the cover of the main case and The latter is constructed in two parts which are substan-m tially alike, and it is only necessary tofremove one;

12 Claims. (Clt. AZBZL-a-IGSL),

2. remove the bolt case withits contained mechanisnr to; reverse the latter and replace it in rever/sed position,l which operation may be performed Without disturbing any of the Working parts` of the mechanism.

Oneobjectl ofy the invention is to providev a new arid-improved door lock ofsimple construction which mayl be economicallyV manufactured.

I A furtherobject of the invention' is to provide ardoorflock havingwa boltdogging mechanism of novell form controlled'by' a guard bolt projecting fromthe face of the lock beside the latch boit, which bolt and associa-ted structuremay` be readi'lyrassmbled in reversedpositions'vvith respect to the remaining part-s of the lock. A? 'still further object of the-inventionis to provide a front door lock having a main case andv a-nauxiliary bolt case; the' bolt case having therein the boltI itselii andbolt dogging mechanism which eX-tendsrarWar-dly into the mainscase andwhichengages .the`I rear portion of the auxiliary case to'fd'og thel bolt` against retraction. i

`T`Stil1` another 'object ofI the-invention is toprovide ya tubular lock having' rollbacks mount-ed therein in! a novel 'and improved man-ner.

jlr'I-'olth'ese andf'otherfends the invention relates ter-the?V novell features and combinations of parts to beL hereinafter described and claimed. f

vt-he,h dravvingsi-` y i Figi! li' isv a longitudinalsectional: view through thecas 5f-"thelockl;v Y 7 i Fi'g 2s is atop; plan vievv ofthe lock with the cover of the case removedl to show the interior mechanism p K A vIdigi-SI-isia viewsimilar to-Fig. 21- showingv the front? por-tionoff thefloclcasewith the partsin another 'position-j Figs- 4i'sa sectional view-online 42--4 of- Fig. 3; Y Eig 5 isa-sectionallview online 5`51of Fig. 3;

Fig. Gicons'titutes front andr'ear endfviews and a side vievvl of the guard bolt;

Fig, lfisiaV perspective view of the controlling slide of`f the'- lfatchdogging lever;

Fig-5' 8 constitutes front and rear endl views an`d'sid'eview 'ofthe latch bolt and "Fig, Qffi-s-iasectional:vievv*onv line' 9 9 ofN Fig. 2. "'T illustrate "a preferred embodiment of my invention Iv'haye shown-l alock comprising a case yHlzlavi-ng therein mechanism whichI Wouldi normally-'be-employed- Qin afront doorlock. vvill beeaploarent,A this case is of substantially cylindricalflorm from-"iront -to-rearl sothat itA` maybe inserted in acylindricalbore formed in theedge of thedoon- Thisrcase l;| which I terrmtheimain cases lock5, consists., oft tvvol` substantiallyY similar 2l and 22 for the reception of rollback hubsY to be described hereinafter and also with

openings

23 and 24 for the reception of a dogging member. Rearwardly of the post I4 a pair of U-shaped bearing members 2'5 and 26 are secured to the respective casing portions, these members having elongated ilat body portions which are provided with openings 21 and 28 acting as bearings for the rollback hubs and are also provided with

openings

29 and 30 for the dogging member 3l.

This case is open at its forward end, and disposed in the front portion thereof when the parts are assembled is a bolt ease 32 which is of cupshaped form having a cylindrical body portion designed to .nt snugly within the front open end of the main case and project slightly therefrom and a rear or bottom wall 33 provided with an opening 34. Secured to the front end of the bolt case is a face plate 35, this member being held in place by outwardly turned tongues or lugs 36 on the bolt case. To the face plate 35 may be secured the usual finishing plate 36' which is provided with an opening of non-circular shape 31 to slidably but non-rotatably receive thehead 38 of the latch bolt and the head 38 of theguard bolt.

It will be apparent that the two portions I2 and I3 of the main case may `be separated by removal of the screw I when it is desired to assemble the bolt case 32 therein and that the latter snugly nts within the bolt case and vis held against movement therein by any desired means such, for example, as a pin 48 secured to the main case and two or more openingsl 4I are formed in the bolt case to receive the pin. Thus the bolt case may not only beadjusted longitudinally of the main case by inserting the pin= 48 in a selected one of the openings 4I but may also be reversed in positionV or turned through ran angle of 180 about its axis as may be necessary to reverse the position of the latch and guard bolts to fit a door of either hand. o

Within the bolt case a bolt is reciprocably mounted which comprises the bolt head 13 8 and stem 43, Athis stem being'provided withareduced portion 44 and a crosshead `45 on its rear end. 4It is also provided with a longitudinal guide slot 46. The bolt is urged to protracted position by means of the spring 41 acting against the bolt at its front end and against thek rear wall 33 of the bolt case at its rear end. Y

Adjacent the'latch bolt just described is the auxiliary or guard bolt comprising the head k38 and a tail portion 48 having an annular groove 49.- This guard bolt is urged to protracted position 4by a spring 5I) surrounding a stem 5I secured in the rear wall ofthe bolt case andadapted to be received in a bore 52 in the guardbolt. This spring acts at its forward end against the tail of the guard bolt and at Vits rear endagain the rear wall 33 of the bolt case. *p

Pivotally secured to the boltstem at l5,4. is a clogging lever 55, thisdoggnglever having a 4 the opening 34 in the bolt case (as does also the stem 43 of the latch bolt) and a toe portion 51 disposed adjacent the rear face of the head 38 of the latch bolt. A plunger 58 mounted in the head of the latch bolt and urged rearwardly by a spring 59 acts against the toe 51 of the dogging lever to urge it about its pivot 54 in a counterclockwise direction and thus urge the tail portion 51 upwardly so as to engage the forward edge of a recess 8| in the tail portion of the clogging lever with the edge of the opening 34 as shown in Figs. 2 and 3.

u It may here be stated that the opening 34 in the bolt case as shown in Figs. 3 and 4, for example, is suiiiciently large over the greater part of its Width to permit the passage therethrough of the crosshead 45 of the bolt stein 43 but is reduced in size adjacent one edge as shown at 62 (Fig. 4) to permit the engagement therewith of the edge 88 of the recess 6I when the latter is raised by the plunger 58 as shown in Fig. 4. However, when the dogging lever 55 is in its normal position the tail portion thereof as well as the crosshead 45 will both pass freely through the opening 34.

Means are provided as is usual in this type of locks for holding the dogging lever in an inoperative cr non-dogging position except when the door is closed. That is, when the door is open andy both latch bolt and guard bolts are protracted as shown in Fig. 1, the clogging lever will occupy the position shown in Fig, 2 in which the stem of the latch bolt and the stem of the dogging lever will slide freely through the opening 34. When the door is closed, however, and the guard bolt is held in retracted position by the strike plate in the usual manner, the plunger 58 is permitted to swing the dogging lever about its pivot 54, thus engaging the rear end of this lever with the opening 34 and preventing the retraction of the latch bolt except by operation of the door knob as will be hereinafter explained.

For this purpose I have provided a dog controlling slide shown, for example, in Fig. 1. This slide comprises a body portion 65 having at itsV forward'end a yoke 56 designed to =be engaged

inthewrecess

4,9 of the guard bolt so that this slide will be reciprocated with the guard bolt. The body portion ofthe slide isV also provided with'agnide lug B1 disposed within the guide s101146 of the stem of the latch bolt and a pair of vlaterally.directed wings JS8 overlying the upperandrear edges of the stem portion 43 of the latch bolt.l It will be noted from Fig. 2 that one ofthese wings normally engages the Vtoe portion 51 ofthe doggng lever and holds the latter against the latch bolt in opposition to the plunger 58 and spring 59. This normally holds therear end of the dogging lever downwardly in the position shown in Fig. 2 in which it is free to slide through the opening 34. However, when the guard bolt33 is, retracted by the strike plate as shown inY Fig. 3, the wing 58 is withdrawn from engagement with the toe 51 and permits the plunger 58 to swing the dogging lever to an operative ordoggingposition.

Mounted in the main ease of the lock is a reciprocating bolt retractor 13 in the form of a yoke havingl a headportion 12 provided with a laterally opening` slot 13 to receive the rear ends ofthe Abolt stem 43 and dogging lever 55. This retractor is urged in a forward direction by the spring'14 surrounding the post 15, the spring actingfagainst thehead 12 and against the post tail portionI 55 extending rearwardly through 7,5 I4.. Thelegs of the retractor member 18 extend rearwardly and are provided with laterally-prof jecting portions 1l adapted to be engaged by inner and outer rollbacks 18 and T9, these rollback's being provided upon hubs 80 and 8| rotatably mounted in the lock case rand designed to be rotated by inner and

outer knob spindles

82 and 83.

The leg portions lll of the retractor may :also be provided with struck-up guide lugs 84 adapted to vbe guided in their reciprocating movement in slots 85 in the portionsylZ and I3 of the lcase; It may also here be noted -that the rollback hubs 80 and 8l are mounted in the openings 2l and 22 of the lock case and aligned openings in l:the

bearing plates

25 and 25 and are held in position in the sections of the case by meansof split rings 8G mounted in annular recesses 81 'in the rollback hub-s Bil and 3l. Thus the rollbacks are permanently and rotatably mounted in the sections of the case and not loosely 'mounted therein as is the usual custom, so that when the sections of the case are separated to permit reversal of the bolt case, these rollback hubs are not displaced with respect to the associated parts.

In order that the outer knob may be dogged against rotation when desired, the rollback 'I9 is provided with a slot 9U adapted to receive a lug 9| on the dogging member 3l which is mounted to slide transversely of the case and which may be moved by a ngerpiece 92 at the inside of the door. The dogging slide 3l is releasably held in either of its two adjusted positions by means of the spring-pressed ball 53 mounted therein, this ball engaging one or the other side of the member 26.

When the door is closed, the parts normally stand in the position shown in Fig. 3` in which the dogging lever 55 is normally engaged with the edge of the opening 34 to prevent the retraction of the latch bolt by a tool inserted between the door and the jamb. It will be apparent, however, that when either rollback is rotated in this position resulting in the actuation ofk the retractor 7B, the front portion of this retractor will rst act upon the rear beveled edge 95 of the recess 6| to swing the dogging lever 55 in a clockwise direction about the pivot 54 and thus disengage it from the edge of the opening 34. Continued movement of the retractor will cause it to engage the crosshead 45 of the bolt stem and withdraw or retract the latch bolt.

It will be apparent as shown in Fig. that when the portion I2 of the main case is detached, the bolt case 32 may be removed, the bolt stem and dogging lever sliding freely out through the slot 'i3 of the head 'l2 of the retractor, and the bolt case then replaced in a reversed position after being rotated through an angle of 180 about its longitudinal axis, thus causing the beveled edge of the bolt head to face in the opposite direction. None of the parts of the mechanism will be disturbed by this operation as even the rollbacks are secured to the respective sections of the case. The operation, therefore, of reversing the latch bolt may be very easily accomplished without any danger of displacing the parts of the lock. It will be noted that during this operation the lock springs are all maintained in their normal positions under tension and there will be no tendency for these springs to fly out as is sometimes the case with locks in use at the present time.

While I have shown and described a preferred embodiment of my invention, it will be understood that it is not to be limited to all of the details shown, but is capable of modification and variaf6 tionjwithin the spirit of the invention and Within the scope ofthe claims.

What We .claim is:

1. A 'door lock, a'main case of tubular shape having bolt retracting mechanism therein, a cupshaped bolt case detachably mounted in the for- .Ward end of the main case and having an opening in its rear end, lthe axes of said cases coinciding, a bolt mounted in the bolt case and having a stem projecting through said opening to be engaged by said retracting mechanism, and a dogging lever carried by the stem land also projecting through said opening for engagement by the retracting mechanism.

2. A door lock, a main case of tubular shape having bolt retracting mechanism therein, a cupshaped bolt case detachably mounted in the forward end of the main case and having an opening in its rear end, the axes of said cases coinciding, a bolt mounted in the bol-t case and having a stem projecting through said opening `to be engaged by said retracting mechanism, and a dogging lever pivoted to the stem and adapted to engage a part of the bolt case to dog the bolt against retraction. I

3. A door lock, a main case of tubular shape having bolt retracting mechanism therein, a cupshaped bolt cas detachably mounted in the for- Ward end of the main case and having an opening inits rear end, the axes of said cases coinciding, a bolt mounted in the bolt case and having a stem projecting through said opening to be engaged by said retracting mechanism, a guard bolt mounted in the bolt case, a dogging lever pivoted to the stem and adapted to engage a part of the bolt case to dog the bolt against retraction, and means carried by said guard bolt engaging the lever whereby the latter is'normally held in an inoperative position.

4. A door lock, a main case `of tubular shape having vbolt retracting mechanism therein, a cupshaped' bolt case detachably mounted in the for- Ward-'end'of lthe main case and having an opening in its rear end, the axes of said cases coin-l ciding, a bolt mounted in the bolt case and having a stem projecting through said opening to be engaged by said retracting mechanism, a dogging lever carried by the stem and also projecting through said opening for engagement by the retracting mechanism, and spring means acting against the rear Wall of the bolt case to urge said bolt to protracted position.

5. A door lock, a main case of tubular shape having bolt retracting mechanism therein, a cupshaped bolt case detachably mounted in the for- Ward end of the main case and having an opening in its rear end, the axes of said cases coinciding, a bolt mounted in the bolt case and having a stem projecting through said opening to be engaged by said retracting mechanism, a guard bolt mounted in the bolt case, a dogging lever pivoted to the stem and adapted to engage a part of the bolt case to dog the =bolt against retraction, a slide mounted on the bolt stem and controlled by said guard bolt, and interengaging means on said slide and lever whereby the latter is normally held in an inoperative position.

6. In a door lock, a main case, a bolt supporting member removably mounted in the forward end of said case, a latch bolt slidably carried by said member having a rearwardly projecting stem, retracting mechanism in the case engaging said stem, and a dogging lever carried by said stem and having a part engaged by said retracting mechanism.

'7. In a door lock, a main case, a bolt-support ing member removably mounted in they forward end of said case, a latch bolt'slidably carried -by said member having a rearwardly projecting stem, retracting mechanism in the case-engaging said stem, and aldogging lever carried by said stem and having a part engaged by said retracting mechanism, said supporting member having a part engaged by said dogging lever to dog the bolt against retraction.

8. In a door lock, a main case, a bolt-supporting member removably mounted in the forward end of said case, a latch bolt slidably carried by said member having a rearwardly projecting stem, retracting mechanism in the case engaging said stem, a dogging lever carried by said stem and having a part engaged by said retracting mechanism, andmeans mounted in the latch bolt and engaging the dogging lever to urge it toward a dogging position.

9. In a door lock, a main case, a bolt-supporting member removably mounted in the forward end of said case, a latch bolt slidably carried by said member having a rearwardly projecting stem, retracting mechanism in the case engaging said stem, a dogging lever carried by said stem and having a part engaged by said retracting mechanism, a guard bolt carried by said supporting member, and a slide controlled by said guard bolt and engaging said lever to urge it to inoperative position.

10. In a door lock, a main case, a bolt-supporting member removably mounted in the forward end of said case, a latch bolt slidably carried by said member having a rearwardly projecting stem, retracting mechanism in the case engaging said stem, a dogging lever carried by said stem and having a part engaged by said retracting mechanism, a guard bolt carried by said supporting member, a slide controlled by said guard bolt and engaging said lever to urge it to inoperative position, and means urging said lever to dogging position when said slide is disengaged therefrom,

11. In a door lock, a main case, a bolt-supporting member removably mounted in the forward end of said case, a latch bolt slidably carried by said. member having a rearwardly projecting stem,`retracting mechanism in the case engaging .said stern, a dogging lever carried by said stem and having a part engaged by said retracting mechanism, said supporting member having a part engaged by said dogging lever to dog the bolt against retraction, said case being of tubular form, and said supporting member, bolt and dogging member being reversible as a unit relatively to said case about the longitudinal axis thereof,

12. In a door lock, a main case, a bolt-supporting member removably mounted in the forward end of said case, a latch bolt slidably carried by said member having a rearwardly projecting stem, retracting mechanism in the case engaging said stem, a dogging lever carried by said stem and having a part engaged by said retracting mechanism, said supporting member having a part engaged by said dogging lever to dog the bolt against retraction, said case being of tubular form, said supporting member, bolt and dogging member being reversible as a unit relatively to said case about the longitudinal axis thereof, and means for securing said supporting member in the case in either of its reversed positions.

HENRY G. VOIGHT. WILLIAM S. EDWARDS.

REFERENCES CITED The following references are of record in the le of this patent:

UNITED STATES PATENTS Number Name Date 1,559,037 Floyd Oct, 27, 1925 1,876,080 Schlage (l) Sept, 6, 1932 1,876,081 Schlage (2) Sept. 6, 1932 261,233 Iven July 18, 1882