US1626106A - Lock mechanism - Google Patents

Description

M. TIBBETTS' Loox MECHANIS'M April 26 Filed June 19, 19g@ Patented Apr. 2e, 1927.

UNITED STATES l 1,626,106 PATENT OFFICE.

MILTON TIBBETTS, OF DETROIT, MICHIGAN, ASSIGNOR TO PACKARD MOTOR CAB COM- PANY, OF DETROIT, MICHIGAN,

A CORPORATION OF MICHIGAN.

LOCK MECHANISM.

Application led June 19, 1926. Serial No. 117,097.

This invention relates to lock mechanism and particularly to combined key and keyless lock mechanism. l

One of the objects of the'present invention is to provide a lock mechanism that may be released without a key but which, if improperly operated, will render the mechanism ineffectual.

Another object of the invention is to provide a simple combination lock mechanism with means for rendering the combination mechanism inoperative upon improper manipulation.

Another object of the invention to to provide a door loekmeehanism with asingle dial combination releasing mechanism.

Another object of the invention is to provide a lock mechanism wth a single dial release mechanism of novel and efficient construction. l

Another object of the invention is to provide a. combination lock mechanism with means for returning the release element to predetermined position upon completion of the release operation.

Other objects of the invention will appear from the' following description taken in connection with the drawings,which form a part of this specification, and in which:

Fig. 1 isa fragmentary view of a door, with the lock mechanism embodied therein;

Fig. 2 is an elevation and part sectional View of the lock mechanism substantially on the line 2 2 of Fig. 3;

Fig. 3.is a section through the lock mechanism substantially on the line 3-3 of Fig. 2;

Fig. 1 is similar to Fig. 3 with parts in elevation and in different positions;

Fig. 5 is an enlarged section on the iine 5 of Fig. 3, and

Fig. 6 is an enlarged section on the line 6-6 of Fig. 3.

Referring to the drawings, 1() represents a door, such as an automobile body door or other support for the lock mechanism. A locking bolt is shown at 11 and a spring 12 bears against its rear end as at 13 so that the bolt is yieldingly pressed towards the left in Fig. 2. The bolt 11 has two manually operated devi( es for retracting it, the first one being a vertical shaft 14 having a handle 15 at its upper end. which shaft has a cam connection Aat 16 for retracting the bolt 11, and the second one being a shaft 17 having a handle 18 and an arm 19 operating against an exten- 'upper position and the s ion 2O on the bolt 11. The extension 20 is shown partly in full lines and part-ly in dotted lines in Fig. 2. The arm 19 is operated by the shaft 17 by reason of the square end 21 of the latter extending through the hub 22 of said arm 19, as shown particularly in Fig. '3.

The bolt retracting handle is usually arranged inside of the door so that it may always be operated to retract the bolt regardless of Whether the bolt is locked or not, while the handle 18 is arranged on the outside of the door and is arranged to be locked under certain conditions.

It will be seen that the bolt 11 can be retracted by the handle 18 only upon swinging the arm 19 through the medium of the shaft 17. Consequently, if the arm 19 is prevented from swinging, the bolt 11 cannot be retracted by the handle 18. A locking member lfor this purpose is indicated at 23 and it is arranged .for sliding movement into and out pf locking position. This member 23 and the other parts of the lock are preferably supported in a plate 24 which forms a part of the door 10, and on this plate is a guide 25 for the locking member 23. A spring 26 operates in notches 27 and 28 to retain the locking member in its extreme positions.

The locking member 23 has a part 29 which is in the path of the arm 19 when the member is in its lower position, as shown in Fig. 2. The member may be raised to its part 29 is then out of the path of the arm 19. When the member 23 is in the position shown in Fig. 2 the arm 19 cannot be operated to retract the bolt 11, and consequently the bolt cannot be retracted by the handle 18. This is the locked position of the bolt.

Means are provided for manually movingv the locking member 23 to its locked position. The shaft 111 is drilled out at its upper end and is provided with a rod 30 extending thereinto. This rod is connected by a pin 31 extending through a slot 31 to a sleeve 32 Surrounding the shaft 111. The lower end of the sleeve 32 is in Contact with an arm 33 on the member 23 and it will be seen. therefore, that when the pin 30 is pushed downwardly as it has been in Fig. 2 the sleeve 32 is carried don'n with it and this pushes the locking member 23 into locking osition.

The locking member 23 may be released from locking position by several different means, as shown herein. First, it may be released or returned to its unlocked position by operating the handle 15 to retract the bolt 11. This is done by reason of a pin 34 on the shaft 14 operating on a cam 35 on the arm 33. Thus, as the shaft 14 is rotated to retract the bolt 11 through the means 16, the pin 34 will force the arm 33 and consequently the member 23 upwardly so that the spring 26 snaps into the notch 28, thus retaining the member 23 in its unlocked position.

Second, the member 23 may be released or moved to its unlocked position by a key mechanism shown diag'lainmatically at 36 in Fig. 1. lVhen the cylinder barrel of the key mechanism 36 is rotated, its square'shaft 37, shown in Fig. 2, will rotate the arm 38 against the cam surface 39, which will thereupon raise the member 23 to its unlocked position.

Third, the locking member 23 may be released or returned to its unlocked position by a combination lock release mechanism or dial mechanism which will now be described.

The operating shaft of this dial mechanism is in the form of a two-part sleeve surrounding the shaft 17 of the door handle 18. The inner part of this shaft or sleeve is'indicated at 40 and the outer part at 42, the latter having a suitable dial 43 on its outer end. These two parts are connected to move together by suitable keys and slots as indicated at 44 at the left hand ends of the parts, and a knurled nut 45, threaded to the end of the inner part 40 of the shaft, bears against the dial 43 and retains thetwo parts in adjusted position relative to each other. This connection between the shaft parts may be used to change the combination, as will be hereinafter more particularly described.

The shaft as a whole is mounted in a bracket 46 which may be suitably secured to the panel of the door 10 as by the bolts 47. The shaft 40-42, hereinafter indicated as a whole by the numeral 41, is mounted to rotate and reciprocate in @the bracket 46 and around the shaft 17. It is rotatedto proper position and then it is reciprocated to release the locking member 23 as hereinafter described.

The inner end of the shaft or sleeve 4l has a cylindrical part 48 upon which a latch 49 is adapted to ride. This latch is mounted between two lugs 50 on the locking member 23 and it has a pin and slot connection 51 with those lugs so that it has a limited up and down movement. A spring 52 tends to draw the latch 49 downwardly and keep its nose 53 in contact with the shaft 41.

Adjacent the cylindrical part 48 of the shaft 41 there is a cam surface 54 which,'if properly positioned in line with the nose 53 of the latch 49, will move the latter' and con- 55 if the shaft 41 is pushed inwardly or tothe right of Fig. 3. The latch is shown in this position in Fig. 4, as therein the shaft 41 has been pushed inwardly so that the latch catches behind the shoulder 55 and retains thc shaft against retraction.

The shaft 41 is formed with a series of splines, preferably on the. part 40 thereof,

as at 56, and a pin 57 extends inwardly from the bracket 46 lo engage between those splines when the shaft is pushed inwardly. An annular recess 53 is provided in the shaft part 40 at one end of the splines 56 so that the shaft may be rotated when it is in its normal or outer position. Thus in Fig. 3

the pin 57 is shown in the annular recess 58, but in Fig. 4, where the shaft 41 has been pushed inwardly, the pin 57 is between two of the splines 56, thereby preventing turning of the shaft in that position. Part 42 of the shaft is formed with an extension 59, one side of which is preferably substantially in line with the numeral zero on the dial 43, and this extension thereby forms a stop for the dial as will hereinafter appear.

The part 42 of the shaft 41 is also formed with a series of longitudinal depressions or splines .6G in co-operation with which a spring pressed pin 61 acts to yieldingly retain the shaft inany of the positions indicated by the numerals on the dial 43. ln other words, this sp-line and pin construction forms a click mechanism by which one may feel the dial click around when it is rotated and thereby count the various positions on the dial. In this way the dial may be turned to the desired position by counting the clicks so that it may be operated at night as well as in the daytime.

That part of the bracket 46 which is outside of the panel 10 is preferably formed in two4 parts, the outer part being in thc form of a plate 62 secured to the inner part b v rivets 63 or otherwise. Between there parts there is a .space 64 which houses a. spring 65, one end of which is connected to the part 42 of thel shaft through a ring 66, and the other end of which is connected to the bracket 46 as at 67. The ring 66 is splined to the shaft part 42 as shown particularly in Fig. 3 so that the shaft part may be pushed inwardly and the ring may slide on it.. Thisspring coils around the shaft several times and tends to rotate the shaft in one direction, normally bringing the shaft lou ` sho uld-er back to the Fig. 3, the spring' will always bring the shaft back to zero position. y

There is also a spring indicated at 68 for retracting the shaft 41, this spring being coiled around the square part 21 of the shaft '17 and entering a recess 69. in the inner end of the part 40 ofthe shaft 41. Thus the spring68 tends to push the shaft 41 outwardly ortowards the left in Fig. 3. The inner end of the' shaft 41 is connected byv a screw 70 and a suitable washer 71 with the hub part 22 'of the arm 19, and one or more washers 72 arranged between a shoulder T3 on .the shaft 40 and the inner end of the bracket 46 act as a limiting means for the outward movement f of t-lie shaft 41.

From the above it will be seen that the locking member 23 may position by merely pushing down the pin The member 23 is then in the position shown in Y2 and its part 29 is in the path of the arm 19 so that the shaft 17 cannot be rotated by the handle 18 to retract .the bolt 11. The latch 49 is riding on the cylindrical part 48i of the shaft 41. One

knowing the combination, that is the numeral onthe dial 43 that corresponds with the position of the cam 54, canturn the shaft 41 by means of the dial to the correct predetermined position dso that the cam 54 is in line with the latch 49. If then the dial and shaft 41 are pushed inwardly, 49vwill rideon'the cam 54 and the locking -member 23 will be pushed upwardly out of the path of the arm 19. The latch 49 will not catch behind the shoulder because the cam 54 prevents it from doing so, and as soon as the dial is released, the spring 68 pushes it back to its original axial posi tion and as soon as the pin '57 reaches the annular recess 58, thespring rotates the shaftl 41 to its original position of zero so that the shaft 41 willA not be left in its com-y bination position. If, on the other hand,

one unfamiliar with the combination pushes the shaft 41 inwardly -while the dial vis at zero position or any other position except the one that corresponds to the cam 54, theA nose 53 of the latch 49 will catch over the 55 and retain the shaft against retraction. Also, even before this happens the pin 57 will have entered between two of the splines 56 so that the shaft cannot be rotated to feel for the cam 54. The shaft .then is locked against both rotation and reciprocation and lit cannot be further operated until the locking member 23 has been released in some other way and the latch 49 removed from its positionl behind .the

shoulder55. This may be done either by be placed Ain locking' the latch i the key mechanism or by operating the handle 15 on the shaft 14, as above explained. When ,the lock'ng member 23 -is thus returned to its original position the shaft 41 will be released and pushed outwardly by the spring 68 and rotated into position by the spring 65.

If it is thought that the combination has been discovered by some unauthorized person, it will be desirable to change the combination and this may be done by loosening the knurled nut 45, then pushing the shaft part 4Q inwardly so that'the pin 57 enga-ges between two of the splines 56 to thereby prevent rotation ofthe shaft part. This will release the splined connection `44 between the shaft parts and the part'42 may then be turned relatively to the part 40 as many notches as desired. The part 42 is then pushed inwardly connection 44 is again nut 45 will be screwed up tight. In'doing this the latch 49 will have caught behind so that its splined made and thc knurler vuse the key or the handle 15 to release the locking vvmember. This change of combination will in no way change the return of the shaft41 to zero position because the dial is arranged on that part of the shaft that is connected to ,the spring 65.` All that 1s changed is the relationship of the cam 54 tothe numerals-on 'the dial 43 so that this position of the dial will be necessary to line the camI 54 up with the latch 49.

lVliile I have herein described in some d etail a specific embodiment of my invention, which I deem to be new and advantageous and may specifically claim, I do not desire it to be understood that my invention is limited to the exact details of the construction, as it will-bey apparent that changes may be made therein without departing from the spirit or scope of my inadapted to be rotated and reciprocated, a device on said element adapted to release saidy member when 'said element is reciprocated with said device in a certain predetermined position, and means for preventing rotation of said element after said element has been started on its reciprocating movement to release the member.

' 2. In a lock mechanism, the combination with a locking member, of means to release said member, comprising an element adapted to be moved, first, from its normal position of rest to a position for releasing said member and second, from said latter position to effect the release of said member, means for i Cil mined point. n lock mechanism, vthe combination preventing a repetition of the former move-4 ment after the latter movement has been started, and mean-s for preventing a retractionof the element except when the first movement has been effected to a predeteroperative position with said device out of contact with said member.

4. In a lock mechanism, the combination with a locking member, of means to release n the locking member, comprising a rotatable and endwise movable element having a device thereon to release thelocking member when s aid element is moved endwise With said'device in a certain position relative to said member, and .means rendering said element non-rotatable after its initial endwiSe movement towards release position.

.5. In a lock mechanism, the combination with a locking membe`r,.of means to release the locking member, comprising arotatable and endwisemovable element. having a device thereon to release the locking member when said element is moved endwise with said device in a certain position relative to said member, and means rendering said element non-rotatable! as long as said element is insuch endwise position that its said device might, if rotated, contact with said member.

6. In a lock mechanism, thecombination with a locking member, of means to release said member, comprising a rotatable and endwise movable element having a- Adevice thereon to release said member when said element is moved endwise with said device in a certain predetermined position, and

means for rendering said element inopera tive to release said member after it has been moved endvvise With said device in any other but said predetermined position.

7. In a lock mechanism, the combination with a locking member, of means to release said member, comprising a shaft having a cam thereon, means for rotating the shaft to bring the cam in 'co-operative relation with'sa'id member, and means for moving the shaft so that the cam will move said member to unlocked position.

8. In a lock mechanism, the combination with a locking member, of, means to release said member, comprising a shaft having a cam thereon, means for rotating the shaft to bring the cam in co-operative relation` with' eaid member, means for moving the Shafts@ that the @am will move said member to unlocked position, said means also permitting movement of the shaft endvvise with the cam in other than cooperative position .means for preventing rotation of the shaft afterits initial movement endwise from said normal position.

10. A lock release mechanism comprising va support, a shaft mounted therein for rotation and ieci'procation within limits, a spring to yieldingly press the shaft towards one of its axial limits, anda spring to yieldii'igly retain the shaft against one of its limits circumferentially.

11. A lock release mechanism comprising a support, a shaft mounted to rotate and reciprocate therein, a dials linedv to said shaft, means for retaining the ial in splined relation to said shaft, said latter means being displaceable to permit change of angular relationship between dial and shaft.

12. In a lock release mechanism, the combination of a longitudinally movableshaft having a release device thereon, and a dial connected to said shaft and adjustable thereon angularly relatively to said device.

13. A lock release mechanism comprising a shaft adapted to be rotated and reciprocated to effect its release action, and spring means to return said shaft to its normal position both 'axially and angularly.

- 14. In a lock mechanism, the combination with a locking bolt and a manually. operated device for moving the bolt, a locking member which may be moved to retain the .locking bolt against movement from locked to unlocked position, and key operated means 'for withdrawing the locking member from 'locking position to thereby release the locking bolt, of means capable of several different manipulations one of which will withdraw said locking member and another of which will render said withdrawing means ineffective. l I

15. In a lock mechanism, the combination with a member to be locked, a member for retaining the first said 'member against movement, andkey operated means for withdrawing the retaining member, of a shaft having a releasing device thereon, means for moving said shaft to bring said releasing device into predetermined position relative to said retaining member, means for reciprocating the shaft to ,release said retaining member, and means for preventing rotation and retraction of said shaft after it is relll ciprocated with its releasing means in other than said predetermined position.

16. In a lock mechanism, the combination with a locking bolt, means comprising a handle for operating said bolt, a locking member for prevent-ing movement of the bolt, and key operated mechanism for Withdrawing said locking member, of additional means for'withdrawing the `locking member comprising a sleeve surrounding the shaft of said handle, means for rotating the sleeve to predetermined angular position, and means for reciprocating the sleeve to Withdraw said member.

17. In a lock mechanism, the combination `with a locking bolt, means comprising a handle for operating said bolt, a locking member for preventing movement of the bolt, and key operated mechanism for wit-hdrawing said locking member, of additional means for withdrawing the locking member comprising a sleeve surrounding the shaft of said handle, means for rotating the sleeve to predetermined angular position,

means for reciprocating the sleeve to Withdraw said member, and means for locking the sleeve against movement either axially orv angularly upon moving it axially when in other than in said predetermined position.

18.. In a lock mechanism, the combination of arlocking member, a shaft to release\said locking member upon being rotated to a predetermined position and reciprocated, means to retain said shaft against retraction if reciprocated While in other than in said predetermined position, and key means for withdrawing said locking means and restoring said shaft to its original position.

1.9. In a lock mechanism, the combination of a locking member, a shaft to release said lockingmember When moved to a predetermined angular position andthen moved axially, a device connected to said locking member to catch and hold said shaft incase the latter is moved axially when in other than in said predetermined angular position, and

Amanually operated means for withdrawing -said locking member and simultaneously releasing said shaft.

20. In a lock release mechanism, the comcertain angular position, a finger piece by which said shaft is rotated and reciprocated,

been started on its reciprocating movement' to release the device.

In testimony whereof I afx my signature.

MILTON TIBBETTS.

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