US1625595A

US1625595A - Lock and latch

Info

Publication number: US1625595A
Application number: US518192A
Authority: US
Inventors: Oscar A Eastlack
Original assignee: Individual
Current assignee: Individual
Priority date: 1921-11-28
Filing date: 1921-11-28
Publication date: 1927-04-19
Anticipated expiration: 1944-04-19

Description

Aprilv 19,' 1927.v

1,625,595 O. A. EASTLACK LOCK AND LATCH 2 Sheets-Sheet 1 Filed' Nv. 2a. 1921 April 19, 1927.

O. A. EASTLACK LOCK AND LATCH l I 2 Sheets-Sheet 2 Filed Nev. 2a 192;

Patented Apk-19,1927. c

NETE@ STTES P'FET FQ.

OSCAR A. EASTLACK, OF CAMDEN, NEW JERSEY.

LOCK AN'D LATCH.

Application led November 28, 1921. Serial No.. 518,192.

My invention relates to improvements inl aperture in the guide plate 13, is a trip Or locks and latches, the object of the invention release pin 16, said pin having secured to the being lto provide improved means for preinner end thereof a substantially U-shaped venting the picking of the lock as by means cross head 17. The outer ends 1S, 18, of this 60 5 of'forcing back the bolt with a sharp instrucross head are turned laterally away from ment inserted between the lock and the each other and are widened so as to permit keeper plate. i of engagement by the respective arms of the rPhe invention will be more readily vundertwo retracting

elements

5 and 7 as best stood by reference to the attached drawings, shown in Figs. 1, 2 and 3. 65 1o in which: Secured to the pin 16 is a cross head 2G,

Figure 1 is a rear face view of a lock made said cross head extending upwardly` between in accordance with my invention, having the the

extensions

9 and 10 of the bolt and havcover plate removed; ing laterally extending

arms

21, 21, estab- Fig. 2 is a section on the line 2-2, Fig. 1; lished in the recess 11 in the said bolt. 70 Fig. 3 is a view similar to that of Fig. 1, Mounted on thev pin 1G and confined between but illustrating the bolt in the retracted pothe guide plate 13 andthe inner face of the sition, and. i cross head 20 is a spring 22, while each of Figs.' 4 to `10, both inclusive, are detached-the guide pins 12 also carries a spring 23 perspectives of elements of the lock mechawhich are confined between the guide p late nism. 13 and the rear faces of the extensions) In the draw-ings, 1 indicates the lock casand 10. The

springs

22 and 23 tend to re-v ing comprising a substantially rectangular tain both the bolt and the pin 16 in the adtrough-shaped portion 2, said casing having vanced position in which they are illustrated detachably secured thereto in suitable manin Figs. 1 and 2. It will be apparent that 80 5 ner a cover plate 3 for the open side of the the pin 16 is permitted a movement indecasing. Mounted in one end of the casing is pendent ofthe bolt 8 to the extent of the a knob 4 having attached thereto on the indifference in width between the slot 11 and side of the casing, asbest shown in Fig. 1,'a the arms 21 of the cross head 20, and further substantially T-shaped element 5, by means that when either of the retracting elements 555 of which the bolt is retractedwhen the

knob

5 or 7 is moved to retract the bolt, there is'turned in a manner to be described hereresults first a movement to the full vextent inafter. In alignment with the knob 4 and of the pin 16 independent of the bolt or tixed in the cover plate 3 is a key-operated until the rear faces of the

arms

21, 21, enshaft .6, to the inner end of which a second gage the rear face of the slot 11, after which no substantially T-shaped element 7 is secured, the bolt 8 is withdrawn with the pin 16 to said element being adapted in the same manthe final position illustrated in Fig. 3. The ner as the element 5for retracting the bolt. inward movement ofthe bolt is limited by Slidably mounted in the front of the casa pair of lugs 3*l on the cover plate 3, said ing 1 and adapted to extend through a suitlugs being located respectively in the paths o5 4o able opening in the front side thereof is a vof the

projections

9 and 10.

bolt 8, said bolt having a pair of rearward In the retracted position of the bolt 8, a

extensions

9 and 10, as most clearly shown in detent 25 slidably mounted in the base of the Fig. A4, and said extensions being'so shaped casing is adapted to releasably retain the as to provide a lateral slot or recess 11. Pro. bolt, said detent having a forwardly extendion `jecting rearwardly from the ends' of each of ing hook-like member 26, which latter is the '

projections

9 and 10 is a tail-piece or adapted to engage the forward end of the

y guide pin

12, 12, which latter pass through extension 9 of the bolt, as illustrated in Fig. suitable apertures in a guide plate 13 mount: 3. Apm 27 extends through a slot in the ed on and extending between a' pair of base of the 'casing 1, and is secured to the 105

bracket lugs

14, 14, which extend inwardly detent 25 in. the manner shown in Fig. 2, from the base of the casing 1, the guide pins said pin having a shoulder bearing against being free to slide through said apertures. the outer surface of the casing, thereby both Extending .through a central aperture or retaining the detent in proper position bepassage 15 in the bolt 8 and extending rear` tween sets of

guide lugs

28, 28, on the inside 11o 55. wardly intermediate the said extensions., 9 of the casing and provldlng means for shiftand 10 of said bolt and through a suitable ling the detent to' either engage or release the bolt, as .the case may be, from the outside vrear of the pin 31 'and the inner end of the recess in the lug 32 occupied by the pin, a spring 33 tending to force the pin forwardly against the rear notched edge of the latch 25,- said pin and spring functioning to retain the latch in either the bolt-retaining or boltreleasing position, as the case may be.

Extending inwardly from each side of the casing 1 and mounted in suitable guide brackets35, 35, is a locking pin 36, said pins being slidably mounted in suitable slots 37 in said brackets, and 'being retained in the slots by the cover plate 3, as best shown in Fig. 2. Each of the locking pins is recessed i at the rear and has established in` said recess a pin 38, between the inner end of which and the bottom of the recess is confined a Spring 39, which latter tends, by lforcing the pins 38 against the sides of the casing. to-

advance the locking pins inwardly in their slots, the inward movement of the locking pins being limited by shoulders 40 at the rear thereof which engage the sides of the brackets 35, as shown in Fig. l. In this i'igure, the locking pins are illustrated in the normal advanced position, in which position the forward edges lie in basl; of the inner ends of the

extensions

9 and 10 of the bolt 8, thereby preventing retraction of the bolt. Means, however, is provided comprising a cam plate .41 secured to the top of the cross head 2O for forcing the pins outwardly to release thel bolt upon retraction of the pin 16, the cam element 41 having rearwardly extending

arms

42, 42, the bev- 'eled rearward end edge of which is adaptedv to engage similarly beveled portions 43 of the forward edges of the locking pins 36, the interaction of these engaging beveledportions effecting an outward movement. when the pin 16 is retracted, ot' the said locking pins 36, and a conse uent release by said locking pins of the bo t 8.

Itwill be noted that the independent movement of the cross head 2O and the pin A 16 inde ndent of the bolt is suiiicient to accomplis the retraction of the locking pins 36 to a sufficient extent to release .the bolt 8, which'thereafter is permitted to move rearwardly with the pin 16. It will be noted also that the front corners of the cam mem.- ber 41 are beveled, as indicated at 45, 45, and

that the locking pins 36 also have a portion 46 of their rear inner edges beveled to cor respond with the bevel 45, these bevels -insuring under all conditions a withdrawal of the locking pins to. permit the advance ofthe bolt into the operative position fromthe retracted position. 'In conjunction with the elements of' the lock so far described, there is providedl a keeper plate 48 for the bolt 8, said plate including an extension 49 from-one side' .hav-

Iing a beveled or inclined-face 50. The cas` ing 1 may be attached to the door in the usual manner, and the keeper plate to thel door jamb in a position to receive the bolt 8 when the door is closed. In closing the door, the beveled face 50 of the keeper -plate is engaged first -by the beveled forward end of the pin 16, which extends beyond the correspondingly forward beveled face of the latch 8, the pin 16 accordingly being forced into the casing toa suiiicient extent to retract the retaining pins 36, and to thereby release the bolt 8. W'hen, therefore, the bev-` eled face of the bolt engages the inclined face 50, the bolt is free to move into the casing 1, whiclnit accordingly does, both the bolt and the pin 16 being forced out of the casing 1 and into the interior of the keeper Aplate 48 afterthedoor is closed by means ot' the

springs

22 and 23.' 'In this position, it is manifestlyimpossible to again retract the bolt 8 until the pin 16 is iii-st retracted,- and since retraction of vthis pin can be accomplished only by means of the knob 4 or by a key through the sleeve 6. all danger of the lock being picked is eliminated.

It will be noted that the locking device .V

hereinbefore described is of an extremely simple and etcient nature, and 1n no Way interferes with the normal operation of the further be noted that the bolt 8 is symmetrical about a horizontal plane (reference be.- ing had to Fig. 2) passing through the center of the pin 16, thus permitting inversion of the bolt without effecting the operation of the lock. in this manner, the lock may be adapted for use on doors which open outwardly as well as inwardly. Y

Although the particular lockillustrated and described is what istermed a rim look, this particular type of lock was selected entirely vfor the purpose of illust-ration, and it is obvious thatmy invention is not limited thereto.

I claim:

1. The combination with a casing'of a bolt slidable therein and adapted in an advanced position to project Vbeyond the side of said casing, a .single retracting element slidable within said bolt in a directionco4 incident with the movement of said bolt and normallyprojecting beyond the fface yof saidbolt, means for limiting the relative movement between the retracting element and the bolt, and means engaging said retracting element for effecting initial relative vmovement betweenl the retracting element and the bolt and subsequent conbolt when the dooris thrown to. It should position within the casing, and movablemeans projecting into the path of and normally preventing retraction of the bolt and adapted to be shifted out of the path of the boltby said relatively movable element.I 3. The combination With a casing, of a' bolt slidable in said casing and adapted inl an advanced position to project beyond-the side, of the casing, "means Within the 'casing tending to prevent the retraction of the bolt from the advanced position, an element" movable with respect to and .slidable in a direction parallelmg the path of the bolt.

vand adapted to release the bolt from the said retraction-preventing means,.means on the bolt limiting the movement of said element relative thereto, and bolt retracting means connected With said element.

' 4. The combination with a casing, of abolt slidable therein and adapt/d in an advanced position to project beyond' the side of the casing, a 'lateral recess in said bolt, a member mounted in Said recess andhavthe bolt, bolt retracting .means connected to said element, and elements adapted to project into the path of said boltvto prevent retraction and to be shifted out of the path of said bolt byjmovement ofy the said s member.

5. The combination with a casing, of a bolt slidably mounted therein and adapted in an advanced position to project beyond the side thereof, a spring-pressed dog movably mounted in the casing and adapted normally to project into the path of the -ter is retracted', and retracting mechanism v mg therein a limited movement relative to' bolt to prevent retraction from the advanced position, and means operatively associated With the'bolt and having a limited movement relative thereto for shifting said retaining element from the path of the bolt to permit retraction of the latter into' the casing. j

6. The combination with a casing, of a bolt slidably mounted =in said casing and adapted in an advanced position'to project beyond the side thereof, a spring-pressed element adapted normally to project linto the path of said bolt to prevent retraction of the latter 4from the advanced position, a member operatively associated with and -having a limited movement relative to the bolt and having an4 inclined cam surface 65 adapted to engage the bolt-retaining ele A' ment to shift it by movement ofthe mem` ber from the path of the bolt when the latconnected With said member. 70 7. The combination With` a casing, of a bolt slidably mounted inthe casing and adapted in an advanced position toproject beyond the side thereof, an element extending through said bolt and normally beyond 75 the outerv face thereof and being capable of limited movement relative to the bolt, retracting mechanism connected with said element, means for releasably retaining the bolt in the advanced position, and means carried by 'said element for releasing the bolt from said retaining means to permit retraction into the casing. t ,Y

- 8. The combination with a casing, of a bolt slidably mounted in the casing and adapted in an advanced position to project beyond the side thereof, anelement extendin through said bolt and normally beond t 1e outer face thereof and being capale of limited movement relative tothe 9o bolt,- the center line of said element lying in a plane bisectin the bolt whereby reversal of the bolt in t e casing is permited, and retracting mechanism connected with said element.

OSCAR A. EASTLACK.