US2019506A - Doorlock - Google Patents

Description

Nov. 5, 1935. E. A. RENEVEY DOORLOCK Filed April 24, 1953 2, Sheets-Sheetl E. ii- Eenevej Patented Nov. 5, 1935 UNIT STA

Application April 24, 1933, Serial No. 667,759

In France May 2, 1932 12 Claims.

This invention relates to door locks and its principal object is the provision of a lock having a bolt which may be secured in locked position by means actuated by an operating member, as for instance the door knob, from the outside of the space closed by the door, without requiring a key for such locking operation, a key or combination being however necessary to unlock the door from the outside after it has thus been locked.

The accompanying drawings show two embodiments of a lock according to the invention.

Figure l is a vertical section through a lock according to the invention.

Figures 2 to 5 show the operation of this look in diagrammatic manner.

Figure 6 is a vertical section of a further form of a lock according to the invention.

Figures 7 and 8 are transverse sections through a part of the lock in two difierent working positions.

Figure 9 is a transverse section through the key tube of a lock according to the invention.

Figure 10 shows a master key which may be used with some of the represented locks.

Figure 11 shows a modified detail of the lock according to Fig. 6.

Figure 12 shows a master key which may be used with the modification represented in Fig. 11.

The lock construction according to Figures 1 to 5 comprises also a lock bolt l and a latch bolt 2. The door knob 23 is mountedfor rotation with the arm 24 adapted toact on the pin 9 of the latch, and with the arm 25 acting on the pin 8 of the bolt. On the square 4 of the knob is also mounted a lever 35.

The locking device for the bolt l comprises a series of tumblers 26 rotatably mounted on a pin 2? carried by the lock frame. The tumblers are subjected to the action of a spring 22 and are provided with an opening 28. The openings 28 of all the tumblers are exactly in line with each other and the upper edge of the opening is provided with two projections 30 and 3| cooperating with a finger 32 carried by the bolt. The lower edge of each tumbler is provided with a projection 34 and with a recessed portion 29, this recessed portion having a different contour 33 for each tumbler to be capable for cooperation with a key.

Figs. 2 to 5 show the operation of the lock bolt in diagrammatic manner. When the bolt is in retracted position (Fig. 2), its finger 32 is en-' gaged behind the projections 3i of the difierent spring 5 I tumblers, In order to lock the bolt, the door knob 23 will be turned upwards; the lever 35 then passes beneath the projections 34 and raises the tumblers about their pivot 2? so that the projections 3! release the finger 32, and when further turning the knob in upward direction the arm 25 pushes the bolt into locking position (Fig. 4), then the knob is released and owing to its weight or to spring action it returns into its normal horizontal position, the lever 35 and arm 25 moving backwards with the knob.

The lever 35 releases the projection 34 and the tumblers turn downwardly about their pivot so that the projections 35 engage behind the finger 32 (Fig. 5) and maintain the bolt in locked position. In order to open the bolt a key will be introduced into the opening 3%, the contour of the key having a shape corresponding to the edge portion 33 of the tumblers, so that when turning the key, the tumblers will be raised and the projections 33 release the finger 32. At the same same time the key enters into a notch 3'! provided in the bolt and rotation of the key retracts the bolt so that the finger 32 is placed between the projections 30 and 3| of the tumblers. A second turn of the key raises again the tumblers and the key enters into a second notch 38 in the bolt and completely retracts this latter.

When the bolt is in closed position it is prefered that the knob 23 and the lever 35 cannot be raised and act on the tumblers, since it would then be possible to introduce a wire through the key opening into the notch 31 and retract the bolt while the tumblers are raised. In order to prevent this, the bolt carries a yieldable pawl 39' which, when the bolt is in looking position, abuts against the lever 35 when it is tried to turn the knob and prevents any rotation of the knob and the lever.

The form of lock shown in Figs. 6, '7 and 8 is particularly applicable to automobile doors. A latch bolt 50 is urged into closing position by a The door knob 52 is-normally in horizontal position and is mounted on a square shaft d carrying also a cam member 53 which controls two intermediary members 5 3 and 55. The member 5 is provided with a slot 55 engaging a pin 51 carried by the cam. When the knob 52 is downwardly turned, the cam 53 turns with the knob and the pin .5! acts on the member 5 5 which turns also and bears on the pin 58 carried by the bolt to retract the bolt for opening the door. When the knob is released, the spring 5| brings the cam 53 and the intermediary lever 54 back to normal position and closes also the latch bolt. The second intermediary member or locking member can move vertically. It is provided with a projection 55 engageable into a notch of the bolt 50. The portion 6! of the intermediary member is normally resting on the cam member 53 in its lowered position as shown in dot and dash lines in Fig. 6.

When the knob 52 is turned upwardly, the portion 52 of the cam acts on the member 55 and moves this member upwardly so that the projection 59 is introduced into the notch 60, while the nose Gla is moved into engagement with the pin 59a carried by the member 55. The intermediary member 55 is maintained in this raised position by a locking device which will now be described.

This locking device comprises four tumbler levers mounted on an axis 63 and subjected to the action of spring 63a. One of the tumblers 64 is provided with a projection 65 and an inclined edge 66. The three other levers 61 have no projection 55 and in the place of an inclined edge 66 they are provided with corners 58. The intermediary member 55 carries at its lower end a sleeve 69 into which penetrate the four tumblers 65 and 6'1 when the bolt is unlocked (Fig. 7). When the intermediary member is raised upon turning the knob and locks the bolt, the sleeve 69 moves into the position shown in Fig. 8 and the springs 63a push the four tumblers beneath the edge of the sleeve, so that the intermediary member 55 is locked against downward movement and the bolt 58 against being retracted.

The intermediary member 55 carries also a pawl 15 which a spring a tends to maintain against a pin 15b. When the member 55 is in raised position, the pawl abuts against a projection 16 of the cam member 53. This latter and therefore also the knob 52 cannot be actuated when the bolt is locked.

In order to unlock the bolt, a key must be in troduced into the tube 10 which corresponds to the shape of the tumblers in order to bring each tumbler in line with the opening of the sleeve 69 so that the intermediary member 55 will fall downwards and free the bolt as also the door knob 52. It is however possible to unlock the door without the aid of a key from inside of the automobile by exerting a pull on the button It connected to a rod ending in a hook I! which engages the four tumblers 64 and 57,.whereby these tumblers are brought out of engagement with the locking member 55 and this latter can fall down to release the member 54 and the latch bolt 50;

It will be remarked that when the tumblers lock the intermediary member 55 (Fig. 8) it would be'possible by introducing a wire in the tube 10, to push the tumbler 64 into its releasing position which is' obtained when the nose B5 abuts against the lock casing. But in order to unlock the bolt also the three tumblers fi'iumust be brought into releasing position and this is practically impossible by means of wires, because as the movement of rotation of these'tumblers is very small, one or the other of them will always be pushed a little too far and will engage beneath the opposite wall of the sleeve 69 and prevent its release.

In locks for automobile doors the square shaft 4 carrying the handle 52 on the outside of the door, does sometimes not carry a handle on the inside of the door. The inside handle is often placed at some distance away from the look about in the center of the car door to permit convenient opening of the door from the inside of the car, and then the inside handle is directly coupled to the latch bolt by means of a pull rod retracting the latch bolt when the handle is op erated. In this case the inside handle can naturally not be actuated to effect locking of the latch bolt by moving the locking member 55, and in order to permit such locking from the inside of the car, the locking member 55 carries a horizontally extending pin 89 penetrating through a slot 99 provided in the lock casing 9! to project from the inside of the door. The pin 89 can be seized by the fingers from the inside of the car to move. the locking member 55 into locking position.

Figure 9 shows a section through a tube It in which such intermediary pieces are spaced from each other. Figure 10 shows a master key which may be used to open a series of locks having tumblers and intermediary pieces as shown in Fig. 9. This key is provided with a shoulder I2 and four tongues 73 separated by slits T4. The shoul der 12 acts against one of the intermediary pieces, while the tongues 73 pass between these pieces and act directly on the tumblers to bring them into releasing position.

This key can thus open a series of locks of which three of the intermediary pieces H acting on the tumblers may be of various lengths, while the fourth piece will always have the same length to coact with the shoulder 12. There could be provided also two shoulders 12 at difierent heights of the key.

Instead of using a key which acts when a pushing force is exerted on it, it will also be possible to use a rotary key as is shown inFigs.1l and 12. In Fig. 11 four tumblers 18 can turn on their axis 19. One end of the tumblers coacts with a sleeve similar to the sleeve 69 in Figs. 6 to 8. The tumblers have difierent shaped contours 8| which cooperate with the stepped face 82 of a key 83. The Figure 12 shows a master key which may be used with this construction. This key is provided with a shoulder 85 cooperating with the edge 8! of the first tumbler, and with three grooves 36 passing over the edges of the three other tumblers without touching the edges 8!. These three tumblers are then turned by the tongues B! of the key acting on projections 88 provided on the faces of the tumblers.

It is to be understood that the invention is not a limited to the details of construction as shown and described and which have been given by way of example only. It is possible. for example, to use a combination key instead of an ordinary key to unlock the bolts, or to use any other system of door knob for actuating the means which lock the bolt.

I claim: 7 r

1. A look comprising a rotatable handle, a latch bolt, means mounted for rotation with the handle and operatively connected to the latch bolt for retraction of the bolt upon-rotation of the handle in one direction from normal position of rest, a locking member operatively connected to said handle to be moved upon rotation of the handle in opposite direction from its normal position of rest, means on said locking member abutting against said latch bolt retracting means upon the locking member being moved by rotation of the handle for preventing movement of the handle inthat direction in which it would retract the latch bolt, and locking means for holding sa d locking member in the position in which H it prevents movement of the handle to retract the latch bolt.

2. A look comprising a latch bolt, an operating handle, means mounted for rotation with the handle for retraction of the latch bolt upon rotation of the handle in one direction from its normal position of rest, a slidable locking member, means mounted for rotation with the handle for moving said locking member into active position upon rotation of the handle in the other direction from its normal position of rest, said locking member upon being moved to active position engaging with said latch bolt retracting means to prevent rotation of the handle in the direction corresponding to retraction of the latch bolt, and tumbler means locking the bolt member in active position and coacting with a key for releasing the bolt.

3. A look mechanism for vehicle doors comprising a latch bolt, a slidable locking member, a handle member rotatable in one direction from its normal position of rest for retraction of the latch bolt and rotatable in the other direction for moving the locking member into active position, means carried by the handle member and engaging with the locking member upon this latter being moved into active position for retaining the handle member in its normal position of rest, spring actuated tumbler means engaging said locking member in active position and cooperating with a key introduced from the outside of the space closed by the door for releasing the locking member, and a hook member engageable with the tumbler means for disengaging the looking member from the inside of the space closed by the door.

4. A look mechanism for vehicle doors, comprising a latch bolt, a slidably mounted locking member, a handle member rotatable in one direction from normal position of rest for retraction of the latch bolt and rotatable in the other direction for moving said locking member into engagement with the latch bolt for preventing retraction of the latch bolt, tumbler means for maintaining the locking member in latch bolt engaging position, said tumbler means being operable by a key introduced from the outside of the space closed by the door for releasing the locking member, and a hook member operable from the inside of the space closed by the door for releasing the locking member.

5. A door lock comprising a latch bolt, a looking member for said latch bolt, a handle member rotatable in one direction for retraction of the latch bolt and rotatable in opposite direction for moving said locking member into engagement with the latch bolt, spring actuated tumbler means for retaining the locking member in latch bolt engaging position, means carried by the handle member and engaging with the locking member upon this latter engaging the latch bolt for preventing rotation of the handle member in the direction corresponding to retraction of the latch bolt, a pawl carried by the locking member, and means carried by the handle member and engaging with said pawl upon the locking member being in latch bolt engaging position for preventing rotation of the handle member also in the opposite direction.

6. A look comprising a rotatable handle, a slidable locking member movable into locked and unlocked positions, means operatively connecting the locking member to the handle for moving the locking member from unlocked to locked position upon a movement of rotation of the handle in one direction from normal position of rest, said means being inoperative when returning the handle to normal position of rest after having moved the locking member to locked position, a yieldable pawl carried by the locking member, 5 and means mounted for rotation with the handle and-adapted to engage with said pawl upon the locking member being in locked position to thereby prevent movement of the handle in said direction corresponding to movement of the locking member from unlocked to locked position.

7. A door lock comprising a latch bolt, an operating handle movable in opposite directions from its normal position of rest, means mounted for movement with the handle to retract the latch bolt upon movement of the handle in one direction from its normal position of rest, a looking member coacting with said latch bolt retracting means, means mounted for movement with the handle to move said locking member to looking position upon movement of the handle in the other direction from its normal position of rest, said locking member upon being moved to locking position engaging with said latch bolt retracting means to prevent movement of the handle in the direction corresponding to retraction of the latch bolt, and tumbler means engaging with said locking member as this member is moved to locking position and adapted to coact with a tumbler actuating member for releasing the locking member from looking position.

8. A door lock comprising a latch bolt, an operating handle movable in opposite directions from its normal position of rest, means mounted for movement with the handle to retract the latch 3 bolt upon movement of the handle in one direction from normal position of rest, a locking member coacting with said latch bolt retracting means, means mounted for movement with the handle to move said locking member to locking position m upon movement of the handle in opposite direction from normal position of rest, said locking member upon being moved to locking position engaging with said latch bolt retracting means to prevent movement of the handle in the direction corresponding to retraction of the latch bolt, and spring pressed tumbler means automatically engaging the locking member when said member is moved to locking position, said tumbler means being adapted to coact with a key for releasing the locking member.

9. A look for vehicle doors comprising a latch bolt, an operating handle on the outside of the door and movable in opposite directions from normal position of rest, means mounted for rotation with the handle toretract the latch bolt upon movement of the handle in one direction from normal position of rest, a locking member coacting with said latch bolt retracting means, means mounted for rotation with the handle to move said locking member into locking position upon movement of the handle in opposite direction from normal position of rest, said locking member upon being moved to locking position engaging with said latch bolt retracting means I to prevent movement of the handle in the direction corresponding to retraction of the latch bolt, tumbler means for holding the locking member in locking position and adapted to coact with a tumbler actuating member operable from the outside of the door for releasing the locking member, and means operable from the inside of the space closed by the door for moving said tumbler means to release the locking member.

10. A look for vehicle doors comprising a latch bolt, an operating handle on the outside of the door and movable in opposite directions from normal position of rest, means mounted for rotation with the handle to retract the latch bolt upon movement of the handle in one direction from normal position of rest, a locking member coacting with said latch bolt retracting means, means mounted for rotation with the handle to move said locking member into locking position upon movement of the handle in opposite direction from normal position of rest, said locking member upon being moved to locking position engaging with said latch bolt retracting means to prevent movement of the handle in the direction corresponding to retraction of the latch bolt, tumbler means for holding the locking member in locking position, and means operable from the inside of the space closed by the door for moving said tumbler means to release the locking member.

11. A door lock comprising a latch bolt, a rotary member operatively connected to the latch bolt for retracting the latch bolt upon movement of said member in one direction, a locking member operatively connected to said rotary member to be displaced upon a movement of the rotary member in opposite direction, said locking member upon being displaced effecting locking of the rotary member to prevent movement of the rotary member corresponding to retraction of the latch 5 bolt, and means operable from the inside of the space closed by said door for efiecting release of the locking member.

12. A door lock comprising a latch bolt, an operating handle on the outside of the door, 10 means operatively connected to the handle for retracting the latch bolt upon a movement of the handle, a locking memberoperatively connected to the handle to be displaced upon another movement of the handle, meansmounted 15 for movement with the handle and engaging with said locking member upon the locking member being displaced whereby to prevent movement of the handle corresponding to retraction of the latch bolt, andan operating member distinct 3.0 from said handle and operable from the inside of the space closed by the door for displacing locking member.

ETIENNE ARTHUR RENEVEY. g5

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