US1932733A - Doorlock - Google Patents

Description

Oct. 31, 1933.

H. J. HENDRICK 1,932,733

DOORLOCK Filed Sept. 22, 1930 2 Sheets-Sheet l l iffl/ IZ Z0 j@ 99 @Je 44 Oct. 31, 1933. H- HENDIRlCK 1,932,733

DOORLOCK Filed sept. 22, 1930 2 sheets-snaai 2 Patented Gct. 31, 1933 UNITED STATES PAT-Em DOORLOCK Hobart J. Hendrick, New Haven, Conn.

Application September 22, 1930 Serial No. 483,458

Claims.

This invention relates to door locks and has for one of its objects to produce a lock which will so secure a door that the door cannot be opened with a jimmy. To this end the latch ,member is carried by the jamb and the mechanism engageable therewith releasableV by means which also may retract the latch carried by the door.

A further object of the invention is to provide a lock which may be arranged for use with either right or left hand swinging doors and with doors which swing either in or out by simple rearrangements of certain of the lock parts.

Still further objects are to provide a lock of this type having a night latch arrangement by which one of the door knobs may be made operative or inoperative to release the lock, and to provide such a lock which is readily key operated.

For a more complete understanding of this invention reference may be had to the accompanying drawings in which Figure l is a fragmentary section through a 6 being a section line for the jamb mechanism,

the door beingin slightly open position.

Figure 8 is a view similar to Figure 7, but

showing the door closed.

Figure 9 is a view 'similar to Figure 8, but

' showing the positions of the parts when the door knob is turned to latch-releasing position preparatory to opening the door.

Figure 10 is a view similar to a portion of Figure Sbut with parts arranged for an oppositely swung door.

Figure 11 is a view similar to Figure 1, but showing one of the door knobs'turned to doorreleasing position.

Figure 12 is a fragmentary perspective showing certain of Vthe parts in the door.

Figure 13 is a fragmentary section through a door and jamb showing a lock mechanism of a modified form in locking position.

Figure 14 is a view similar to portions of Figure 14 illustrating the action of the jamb bolt on the lock keeper mechanism.

As shown on the drawings, a portion of the mechanism is contained in a lock casing 20 which is mortised iiush into the edge of a door in the customary manner, and a latch casing 21, which is mortised flush into the adjacent jamb. A latch or bolt 22 is provided, this bolt being located in the latch casing 21 rather than in the lock casing 20. The bolt 22 is pressed outwardly as by a suitable spring 23 so that a considerable portion of its outer end projects beyond the jamb unless the bolt is pressed in'- wardly, as in Figure 9. Therbolt maybe provided with a pair of pilot latches 24 movable inwardly by contact with the end of the door as shown in Figure 7. The outer end portion of the bolt is recessed, as shown in Figure 6, so as to form shoulders 25adapted to be engagedby a keeper 26 located within the lock casing 20. The keeper is pivoted as at 27 on an ear 28 projecting inwardly from a side of the lock casing. A similar ear 29 is mounted on the opposite side of the casing for use if the lock is to be adapted to a door opening in the opposite direction as illustrated in Figure 10.

A suitable spring 30 is provided to press the keeper 26 into position to engage the shoulders 25 on the bo-lt22 in the manner indicated in Figure 8. The keeper 26 may be made with a comparatively narrow body portion 31 on the =i= have sufficient clearance behind them to allow for swelling and shrinking of the door. When the bolt is thus engaged by the keeper, the former is positively held against retraction into the latch casing 21 so that retraction of the bolt by means of a jimmy is thus prevented. 'As long as the bolt projects across the clearance between the door and the jamb, and into the lock casing, it is impossible to open the door.

` According to the invention, mechanism is provided to release the keeper from engagement with the bolt and to thrust the bolt back `into the latch casing against the pressure of the spring 23 so that the door may be swung open. To this end an actuating slide 35 maybe employed, this member being illustrated in perspective in Figure 12. As therein shown, it may comprise a vertical plate 36 having a stiffening rim 37 around three sides thereof.' To the fourth'side is secured a facing plate 40 which nts in an opening 38 in the face 39 of the lock casing 20 which is nush with the edge of the door. The facing plate 40 prevents entry of dust or other foreign matter into Vthe lock casing when the door is open. The face 39 may be provided with a striker portion 400 for the latch. This opening 38, as shown in Figure 2, is made in the form ofga C, leaving a tongue 41 projecting from one side of the wall 39. The facingplate 40 is likewise in the shape of a C so as to t within this opening. When the keeper is pivoted to the ear 29, as in Figure 10, the facing plates 39 and 40 are inverted as is also the latch casing'21 with its bolt.

At the end of the vertical plate'36 remote from the facing plate 40 is a neck 42 which extends rearwardly and terminates in a cross.- head 43, the ends of which vare guided between pairs of ribs 44 formed on or secured to the innersurfacesvoil the side walls of the lock casing 20. The bottom edge of the facing plate 40 inlike .manner slides on and is guided by a rib 45 von each side wall of the lock casing. The

- g keeper 2'6is -located within the lock casing behindmthe tongue 41 so Vthat when the actuating slide 35 ismoved rearwardly in the lock casing, the keeper' projects through the opening in the facing .p1ate4`0, .as shownin Figure 8. 'The `for ward end of -thefkeeper is thus in a position to catch the projecting .end ofthe bolt'22.

When the dooris swung shut '.thelea'ding Vedge of the door pushes the bolt 22 into the vlatch casing until the lock casing and latch Vcasing' are inline. vThe spring `2'3 kthen acts through the boltgtopush the actuating slide 35 rearwardly until the keeper 26 proj eets through the opening in the face plate 404 and is swung over .by .the

spring v30 'to catch the end of the bolt 22.

'In order toopenthe-doorit is necessary to move the actuating slidef35 lforwardly. This motioncauses theedge 4'6 f the face plate 40 to-riieonthe side of the keeper26 andthusto swing'thekeeper on itsr pivot against the' pressureof the spring '30. `The keeperis! thus swung cleanoffits engagement vwith the bolt 2'2 so that the bo1t\is-th\1s` rleasedfor motion intothe latch casing 2'1. YContinued 4forward motion of` the actuating vslide 3'5 pushes the bolt 22 into the Ylatchcasing against the pressure of the spring -23Yunti1r the: casing plate 40.is"f1ush with the-"for- `ward-endface of theflock casing. v"The door'is ready `tof-be swung-openl Y vFor the actuation of the slide Y35-siiitable mechanism may -be provided asillustrated in Figure 1. The rearward edge of thegreiniorcing member 37'may be engaged by-an. np'standing leverwhich rocks onits foot 151, theL-latter being loosely` held' between a -tug- -52..and a spring 53. The klever-50 may be rocked 4against the lug 52 -asv-avfulcrum by eitherend of an arm..54 which is fixed on-a shaft 55. IAs indicated lin Figures 4ta-nd '5,the-'rockingarm 54.may `b e supplied in duplicate,=these -arms beingsepa rately mounted on short shafts-55-wlfiichare respectively connectedwith the door-.knobs 56.011

oppositesides of the door. -By. this structure .one

`of the rock amiss@ may be .provided .with 100k- -ing means to prevent Yopening of the door byfits cox-respondngknob, whlethe other rocking arm .54 is free `to `operate by the turning :of its vrespective knob '56.

"Asis customary in door construction a night '.latchlmechanism -may be provided actuabler'to :prevent'opening of the door 'by the outside door knob. fTo this end je. pair` of suitable plungers '60- andl are mounted so as toprojectthroug-h -lthe 'end lwall 39 v-of the lock casing. These yplungers-arepivotally lconnected at their` inner endswith'opposite ends of a rockfarmv62 which may be pivoted as at 63. This rock arm Carries :knobs 56.

rbe retracted from its recess, leaving both of the arms 54 free to be operated by their respective Ii the plunger 61 is pressed in, the lug 64 is moved into the recess 65 thus locking one of the arms 54 against rotation and preventing the opening of the door by one of the knobs 56, the other knob being free for operation. The rock arm 62 can be readily arranged on either side of the plungers and 61 so as to cooperate with either one or the other of the arms 54. Thus the night latch can 'be adapted to operate with either one or the other of the Yknobs 56 according to which one' is the outsideiknob of the door.

The actuating slide 35 is also adapted :to vbe operable through the use of a door key. To this end a lock of any convenient construction may beprovided, such a klock being;illustrated at 70. The lock may be adapted to `be screwed into vplace as illustrated in Figure 3, a suitable detent '71 being provided to yengage Athe side of the lock Ybarrel after it is in .place and ;to.,hold itin place. The detentmay'be vpressed firmly against the side of the barrel as by 'a screw 72, thehead of whichis ush with the edge of the door so .that the fastening `screw 72 can'be turned 'only when the door is opened.

The lock.may be provided with a projecting arm 75 adapted to be swung by operation of a key in the lock. As shown in lFigure 1,-this projection may extend downwardlyso'that when it is swung'byV aetuationof the lockkey, itenvgages the rearward face ofthe crosshead'43 `and. thus moves the entire actuating .slide `35 forwardly a sufficient distance to Vpush thebolt122 home so as to permit `the openingof thedoor. The actuating slide 35 can thus be operated'by either one of the arms 54 or by the arm 75, these latter members being in turn operableyrespectively, by the door knobs 56 and a key Which ts the lock 70.

A modi'edfform cflthe invention is. illustrated inFigures 13 and 14. In this form a boltlor latch 80 is provided,.pressed outwardly as-by a suitable spring 23. Mortisedwithin the door is a lock casing 2O within which is mounted mechanisnrfor gripping the projecting end of `-the bolt so as toV hold it positively against retraction -until the gripping means are released L'by ,mechanism contained in the lock casingZO'. The

lock .casing may contain a Apair of 'horizontal lever arms, 84, 85, one above the otheryeach of these ,arms having a tooth 86 projecting from its .arm toward the other arm. Each tooth .is beveled 65 may be pivotally mounted within thelock casing as at 90 and 91. A .pairrosprings' 92, 93 are provided by which the arms .are resiliently pressed toward each other. to hold the teeth 86 within `the recess 88 and vthus to retain the bolt 8O against retraction as shown in Figure 13. In vorder to release 'the bolt, the levers.84 .and 85.must be swung' back away from each other to withdraw the teeth 86 These springs tend fromthe recesses 88. For this purpose the levers 34 and 85 are provided with cam portions 94 and 95 which may be engaged by the outer end of the slide 50 when it is actuated by one of the knobs to release the bolt in the same manner as described with reference to the construcv tion shown in Figures l to l2 inclusive.

When the door is shut the catch or bolt is pressed against the teeth 86 which are thereby separated sufficiently for the bolt to pass therebetween, whereupon they snap into the recesses 88 and act as a keeper to prevent,withdrawalgo the bolt except by actuation of the slide 50, either` by turning :one of the door knobs or by turning the key.

To reversethe lock it is necessary onli7 to reverse the face plate and to shift the night latch to engage in the other knob arm 54 to provide for right, or left, in or out swing oi the door.

Certain embodiments of this invention having thus been described, it should be evident to those skilled in the art that various changes and modications might be made therein without departing from the spirit or scope of the invention as dened by the appended claims.

I claim:

l. A door lock comprising a rotatable knob, a latch element for mounting in a door jamb and spring means for yieldingly holding said element projected outwardly of the iace of said jamb, means mounted in a door for enclosing and holding against retraction the projecting portion of said latch back of the edge of said door when said door is shut, and means carried by the door and actuable by rotation ci said knob to release said holding means when the door is to be opened.

2. A door lock comprising a rotatable knob, a latch element for mounting in a door jamb and spring means for yieldingly holding said element projectedoutwardly of the face of said jamb, means mounted in a door for enclosing and holding against retraction the projecting portion of said latch back of the edge of said door when said door is shut, and means carried by the door and actuable by rotation oi said knob to release said holding means and to eject said latch from said door and into said jamb to permit the door to be opened.

3. The combination with a latch casing for mounting in a door jamb, a latch carried in said casing, and a spring for yieldingly pressing said latch to extend outwardly of said casing, of a door lock casing having an opening in its edge face to receive the projecting portion of said latch when the door is closed, a keeper carried within said lock casing for interlocking engagement with said projecting latch portion a rotatable knob, and means actuable by rotation of said knob for releasing said keeper from said latch.

4. The combination with a latch casing for mounting in a door jamb, a latch carried in said casing, and a spring for yieldingly pressing said latch to extend outwardly of said casing, of a door lock casing having an opening in its edge face to receive the projecting portion of said latch when the door is closed, a keeper carried within said lock casing for interlocking engagement with said projecting latch portion, and means for pushing said latch back into its casing to permit the door to be opened, said pushing means including a rotatable knob, a face plate having a portion movable inwardly from a position hush with the remainder of said plate to the interior ofthe lock casing, said portion substantially closing said opening when in its flush position, and means actuable by rotation of said knob to move said plate portion outwardly rto its flush position.

5. The combination with a latch casing for mounting in a door jamb, a latch carried in said casing, and a spring for yieldingly pressing said latch to extend outwardly of said casing, of a door lock casing having an opening in its edge face to receive the projecting portion of said latch when the door is closed,'a keeper carried' within said lock casing for engagement with said projecting latch portion, a member movable in said lock casing toward-and from a position in which a face thereof is flush with said edge face and substantially lills said opening, said member being actuable to move said keeper out of engagement with said latch and to push said latch out from said lock casing, a rotatable door knob, and connections from said knob for actuating said member.

6. The combination with a latch casing for mounting in a door jamb, a latch carried in said casing, and a spring for yieldingly pressing said latch to extend outwardly of said casing, of a door lock casing having an opening in its edge faceto receive the projecting portion of said latch when the door is closed, said lock casing having a lug on each side wall, a latch keeper selectively pivoted to either of said lugs to swing into or out of engagement with said latch, a spring pressing said keeper into latchretaining position, a face plate for said lock casing having an opening to receive said latch and a portion extending forwardly of said keeper,V

said face plate being reversible in accordance with the position of said keeper, a slide in said lock casing movable to retract said keeper and then toV press said latch into its casing, said slide having a reversible face plate mating the opening in said casing face plate and engageable with said latch, and means for actuating said slide.

7. The combination with a latch casing for mounting in a door jamb, a latch carried in said casing recessed to form a pair of spaced alined shoulders, of a door lock casing having an opening in its edge face to receive said latch, a keeper in said casing having a body portion movable between said latch shoulders and an elongated edge portion for engagement with the inner faces of said shoulders to prevent retraction Vof said latch into its casing, and .means actuable to withdraw said keeper to permit retraction of said latch.

8. The combination with a latch casing for mounting in a door jamb, a latch carried in said casing, and a spring for yieldingly pressing said latch to extend outwardly of said casing, of a. door lock casing having an opening in its edge face to receive the projecting portion of said latch when the door is closed, a pair of spaced hook elements in said casing movable to engage in opposed openings in said latch to hold said latch against retraction into its casing, spring means for holding said hooks in latch-retaining position, said latch and hooks having cooperating portions causing said hooks to separate by pressure of said latch thereon as projected by its spring, and means actuable to retract said hooks to release said latch.

9. The combination with a latch casing for mounting in a door jamb, a latch carried in said casing, and a spring for yieldingly pressing said Cri latch to extend outwardly of said casing, of a door lock casing having an opening'ir'i'its edge face to receive the projecting portion of 4said latch when the door is ,'closed, a pair of spaced hook elements in said casing movable to engage in opposed openings in said latch'to hold'said latclragainst retractionl into its'casing', 'spring means for holding said hooks in latch-retaining position, said latch and hooks having cooperating portions causing said hooks to'separate by pres- 'sure of said latch thereon Vas projected by its spring, and means actuable to retract said hooks to release said latch, and-to thereafter press Said latch into its casing to permitthe door to be opened.

10. The combination with a latch casing for mounting in a door jamb, a latch carried in said casing',` and a springfor yeldingly pressing said lever retracted, a door knob spindle in'said lock casing, 'andan arm carried by said spindleroclc-l able'againsts'aid lever for moving 'saidvlever against the actionofsaid lastv mentioned spring to' 'actuatesaid element Aon turning 0f Said spindle. HOBART J.,

AAno

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