US2154660A - Padlock - Google Patents

Description

April 18, 1939. K A BRAUM G 2,154,660

PADLOCK Filed Dec. 4, 19 51 s Sheets-Shet 1 Fig 3 X 45 25 L 57 I 3| l N VEN TOR A TTORJVE Y April 18, 1939. K. A. BRA'UNING PADLOCK Filed Dec. 4, 1931 5 Sheets-Sheet 2 lNVbNTOR A TTORNE V April 18, 1939.

K. A. BRAUNING 2,154,660

PADLOCK Filed Dec. 4, 1951 3 Sheets-Sheet 3 {MMM 11v VE/VTOR ATTORNEY Patented Apr. 18, 1939 PATENT OFFICE PADLOCK Karl A. Brauning, Stamford, Conn., assignor to The Yale & Towne Manufacturing Company,

Stamford, Conn.

Application December 4, 1931, Serial No. 578,920

18 Claims.

This invention relates to padlocks, and more especially to padlocks of the combination type.

()ne feature of my invention embodies a padlock casing formed of two parts united by a 5 bayonet joint. the bayonet joint being held against separation by the padlock shackle. The shackle is removable when in its unlocked position so as to permit the relative movement of the casing parts to release the bayonet joint and allow access to the tumblers for the resetting of the combination.

A further feature of the invention is the means for holding the combination in a set position when the shackle padlock is drawn endwise from the casing into its released position whereby to permit ready reinsertion of the shackle. A further feature of the invention is the means for dispersing the combination when the shackle is moved back to locking position, the dispersion being incidental to the movement of the shackle locking bolt to shackle locking position.

A further feature of the invention embodies a shackle retainer which is held by the shackle locking bolt in a position wherein the shackle cannot be withdrawn when the bolt is in release position, but which may be moved by predetermined operation from the outside of the casing to release the shackle when it is desired to disassemble the casing.

A further feature of my invention is the provision of means whereby the shackle can be released by a key when it is not desired to operate the combination mechanism. A further feature of the invention is the design of the combination mechanism whereby the key controlled mechanism will set the combination mechanism so that a mere rotation of the combination dial will actually release the shackle.

Further features of the invention will be readily apparent from a review of. the following specification taken in connection with the drawings wherein preferred modifications of my invention are shown. Referring now to the drawings, Fig. l is a plan view of my padlock, while Fig. 2 is a side view thereof, and Fig. 3 is a view similar to Fig. 1 with the top half of the casing removed. Fig. 4 is a plan view similar to Fig. 3

showing the locking means removed, and the shackle retainer about to be withdrawn so that so the shackle can be removed. Fig. 4A is a plan view of the shackle retainer. Fig. 5 is a view similar to Fig. 3 showing the locking bolt and the means for dispersing the bottom or initial tumbler.

Fig. 6 illustrates the relative rotation between the two halves of the padlock casing when it is desired to separate the same. Fig. 7 illustrates the combination operating dial and the means for securing the same in the casing. Fig. 8 is a side and plan View of the locking bolt. Fig. 9 is a View showing the combination lock parts set out in the order in which they are assembled into the casing.

Fig. 10 shows a modification of my invention having key locking mechanism for controlling the combination mechanism whenever it is undesirable to set up the combination. Fig. 11 is a side view of the lock illustrated in Fig. 10, while Fig. 12 is a view of the lock with the top half of the casing removed. Fig. 13 is a view illustrating the locking bolt of the lock of Fig. 12 in its unlocking position. Fig. 14 is a view similar to Fig. 13 showing the bolt in its locked position, and with the tumbler dispersing device of the bolt in operation. Fig. 15 is a view similar to Fig. 14 and Fig.'l3 showing the action of the key operating mechanism in releasing the bolt. Fig. 16 is a view of the bolt utilized in the modification of Figs. 10 to 15. Fig. 17 is a view illustrating the action of the key controlling mechanism for releasing the bolt without setting up the combination. Fig. 18 is a view of a part shown in Fig. 17, and Fig. 19 is a view of the movable bolt fence.

Fig. 20 is a partial section along the line 2020 of Fig. 10. Fig. 21 is a partial view of Fig. 20 taken in the direction of the arrows 21-2 I. Figs. 22 and 23 are sections taken along the line 22-22 of Fig. 20 illustrating the clutch action of my key controlled mechanism. Fig. 24 shows individual elevation and plan views of the various parts in the order of their assembly in Fig. 20.

Referring now more particularly to the drawings, and especially to Figs. 1 to 9 inclusive, reference numeral I0 indicates a padlock having a casing formed of two parts H and I2. The part II is equipped with a series of flanges l3 and grooves I4 shown in Fig. '7, which cooperate with a complementary series of flanges l5 shown more particularly in Fig. 4, these parts constituting a bayonet joint as will be quite clear to those skilled in the art. When the flanges l3 ride under the flanges l5 of the part l2, it will be impossible to separate the two casings by endwise pressure, but when the flanges l3 are rotated opposite the portions iii of the casing l2, it will be comparatively simple to pull the part H out of contact with the corresponding part [2.

In order to hold the two parts in the relationship shown in Fig. 2, the padlock shackle I1 is utilized. That shackle has two legs which ride in shackle bores formed by the cooperating portions 8 of the two casings and 2, and when the shackle is in the position of Fig. 2 it is adapted to hold the casing halves against rotation as is quite clear. Fig. 6 illustrates the relative rotation of the parts H and I2 when the shackle is removed from the bore-forming portions |8, in order to release the bayonet joint and separate the casing into its integral parts. For operating the combination mechanism, the casing portion II is equipped with a dial I9 resting in a bearing a 26 and equipped with a hand knob 2|. The dial is held in position relatively to the casing H by a spring ring 22.

For locking the shackle within the padlock, I utilize a slot 24 in the nose of the shackle H in which is adapted to ride the nose 25 of a rotary bolt 26. The bolt 26 is drilled at 28 so as to pivot in the padlock casing on the stud 29, and is equipped with a fence 21 which cooperates with a series of tumblers 3| illustrated more particularly in Fig. 9, as the bolt is spring-pressed in an unlocking direction by a spring 36.

Each of the tumblers 3| shown in Fig. 9 is equipped with a gating 32 and a series of notches 33, while the casing carries a stud 34 shown in Figs. 4 and 5, on which these tumblers are mounted. Referring now more particularly to Fig. 9 wherein the order of the mounting of the tumblers is more fully illustrated, it will be understood that a tumbler 3| is first placed on the shaft 34. Superimposed on this tumbler is a, washer 35 and then a tumbler setter and operator 36. The prong portion 31 of this tumbler setter operates in one of the notches 33 of the tumbler 3| so as to determine the combination of that tumbler or the point at which the gating 32 will align with the fence 21 of the bolt illustrated in Fig. 8, as will be quite clear to those skilled in the art. Superimposed on the first tumbler is a second tumbler 3| and a second washer 35 and a second tumbler setter 36 whose prong 31 will cooperate with the second tumbler 3| to set its combination, as in the case of the first tumbler, and to rotate the first tumbler by coaction with the top part 31 of prong 31. There is still a third tumbler 3| which is set in the same way as will be quite clear.

In addition to the tumblers, the dial portion I9 having the finger operated knob 2| which is secured for rotation relatively to the casing 26, has fixed thereon the tumbler actuating member 38 having a pin 39 which cooperates with part 31 of the top tumblersetter 36 for rotating the same and its tumbler 3| on the shaft 34. As will be understood, rotation of the top tumbler will rotate the second tumbler through the second tumbler setter 36, etc. so that all the tumblers will be operated. Depending upon the location of the tumbler setter prong 31 relatively to aparticular notch 33 of each tumbler, certain number operations of the dial l9 to the left and right as designatedv by the letters L and R in Fig. 1 will set the tumblers so that all their gatings 32 will align with the fence 21 of the bolt 26. As will be clearly understood, the spring 30 will then press the bolt 26 in a clockwise direction from the position of Fig. 3 to withdraw the nose 25 from the shackle slot 24, and permit movement of the shackle outwardly from the casing.

When the shackle I1 is released by the bolt 26, it becomes. necessary to limit its outward movement relatively to the casing of the padlock. For this purpose, I prefer'to utilize the retainer 40 illustrated more particular in. Fig. 4A. This retainer has a portion 4| which normally cooperates with the flat part 42 (Fig. 4) of the padlock shackle l1 and the stop part 43 at the bottom of the shackle. Thus, when the shackle moves from its position of Fig. 3 to its outward position illustrated in Fig. 4, the stop 43 will abut the retainer nose 4| to prevent further outward, movement of that shackle.

Normally, when the shackle is in its locked position and is held by the nose 25 of the bolt 26, the retainer 46 is held loosely in its bearings 44' and 45 of the padlock casing. However, when the bolt 26 moves in a clockwise direction under the influence of spring 30, when it is desired to release the shackle, the upstanding portion 46 of "the bolt will fit in behind the shoulder 41 of the retainer 46 as shown in Fig. 4A so as to maintain the retainer in a shackle retaining position.

Under normal conditions, it will merely be necessary to release the shackle, permit its outward movement and then move the same back to its locked position. However, it may sometimes be desirableto open the padlock casing so as to change the combination. If such action is desirable, a tool such as that shown in Fig. 4 and designated by reference numeral 41 is inserted through one of the shackle holes formed by the two casing parts, and through the hole 48 in the retainer 40 to. withdraw the same against the action of the bolt portion 46 and the spring 30 so that the shackle may be fully withdrawn. When the shackle is thus fully withdrawn, it is possible to; rotate the two parts II and I2 of the casing into the position illustrated in Fig. 6,

wherein the flanges l3 and I5. will be separated from one another and the casing portion may be withdrawn leaving the combination mechanism exposed as shown in Fig. 3.

The tumbler setters 36 may then be moved relatively to their respective notches 33 in the tumblers 3| so as to vary the combination to any particular set of numerals desired.

As will be readily apparent, when the tumbler gatings 32 are aligned, with the bolt nose 25 withdrawn from; the shackle nose, the fence will rest in the gatings 32, and it will be impossible to rotate the tumblers and the tumbler actuator 39 by the dial |9 and finger-piece 2|. In order to lock the padlock, .it then becomes necessary to move the bolt back to its locking position and. disperse the tumblers to maintain the bolt in that locked position. For this, purpose, the bolt 26.is equipped with a cut-out opening 49 having a lug portion 50 which is adapted to cooperate with a pin 5| on the bottom tumbler 3|. (Figs. 5 and 9.) A lever 52, shown more particularly in Figs- 3 and 5, is pivoted at 53 in the. casing and is adapted to be actuated by the stop part 43 of the shackle |1 aswill be readily apparent.

Movement of the shackle in a downward direction when the bolt nose 25 is in a position relatively to the shackle illustrated in Fig. 13, will cause the stop 43 to depress the lever 52 moving that lever in a clockwise direction, and rotating the bolt 26 in a counter-clockwise direction about its pivot 29 against the pressure of spring 36. This will withdraw the fence 21 from the aligned gatings 32, and the lug portion 56 of the bolt 26 will contact the pin 5| of the bottom tumbler 3|, to rotate that tumbler to move gating 32 from its aligned position opposite the fence 21. The nose 25 of the bolt 26 will now be located in the shackle cut-out portion 24 and the bolt 26 will be prevented from moving in a clockwise direction tOzilJS unlocked positionv by the bottom tumbler 3|, so that it will be necessary to operate the dial IS in the usual manner to once more re-align the tumblers if it is desired to open the padlock.

Referring now more particularly to Figs. 10 to 24 inclusive, there is illustrated a modification of the invention shown in Figs. 1 to 9 inclusive, this modification having a key controlled mechanism whereby the lock may be operated by someone not having the combination. In this modification, there are the two padlock portions I and I2 held together by the bayonet joint described with reference to the lock of Fig. 1, the two parts being held normally against relative rotation by the padlock shackle. There is also the retainer for the shackle as in the first modification, and the rotation of the tumblers acts to set the tumbler gatings in alignment with the fence of the bolt.

The operation of the locking bolt 26 is substantially similar to that of the locking bolt of the modification of Fig. 1, except for the manner in which that looking bolt acts to disperse the bottom tumbler 3| when the shackle is moved into locking position in the casing. The bolt in the modification shown in Fig. 16 is equipped with a pin 52 which cooperates with the nose of the shackle I! as is illustrated quite clearly in Figs. 13 and 14. Upon the initial movement of the shackle i! into the padlock, the nose of the shackle will abut the pin 52, further movement of the shackle against the pin 52 will cause the bolt portion 25 to ride into the cutout portion 24 of the shackle as is illustrated in Fig. 14. At

: the same time, an extended arm 53 of the bolt is adapted to contact with the pin 5| of the bottom tumbler 3| and to move that tumbler from its position indicated in Fig. 13 to its position illustrated in Fig. 14, wherein its gating is no longer opposite the fence 2! of the bolt. When the shackle is released from its downward pressure against the bolt 26, it will move to the position illustrated in Fig. 12 with the fence 21 abutting the perimeter of the bottom tumbler 3|. It will then be necessary to set up the entire combination in order to permit the fence to enter the gatings 32 of the various tumblers 3| if it be desired once more to release the shackle.

Referring now more particularly to Fig. 20, the dial H3 is shown held in a rotating relation to the casing portion H by its retaining spring ring 22. The knurled finger operated portion 2| is made longer than shown in the modification of Fig. 1, so as to contain therein a locking plug 55 which may be of any desirable type, it being immaterial to the operation of the device described in this application, whether it be of sliding or pin tumbler construction. The plug has on its operating end a cam 56 and a lug 5i, and cooperating with the lug and cam is a washer 58 which fits over the end of the plug and rotates therewith. The washer is so constructed that if there is any open mechanism in the plug through which a tool may enter, the washer will prevent the use of that tool through the plug and into the locking mechanism, as will be clear to those skilled in the art. A further washer member 59 is positioned just beyond the washer 58 and has a cutout portion 66 cooperating with a lug 6| cast integrally with the dial member I9, so as to prevent movement of the Washer 59 relatively to the dial. The cutout portion 6| of the washer will cooperate with the lug 51 of the plug 55, so as to limit the rotation of that plug as defined by the limits of the cutout portion 6|. The washer is further equipped with slots 62 in which are adapted to slide clutch members 63, whose lugs 64 fit within those slots for bearing movement.

A combination cap and clutch member 65 abuts the clutch members 63 and holds the same firmly pressed against the washer 56 and in bearing relation to the slots 62. This clutch member has a seriesof teeth 66 which are adapted to cooperate with teeth 61 on the clutch members 63 as will be described later. The clutch member 65 is cut out at 68 to form an opening adapted to permit sliding movement of the clutch member 65 on the shaft 34 on which the tumblers 3| are mounted, but to prevent relative rotary movement between the same.

A further member 69 is held firmly against the washer 59 and cooperates with the flange it of the clutch member 65 to hold that clutch member firmly in its position illustrated in Fig. 20. The member 69 is held firmly in assembled position by the staked portions H of the dial casting as is clearly shown in Figs. 20 and 21. Furthermore, this member 69 is equipped with a lug portion I2 whereby the tumblers are actuated when the dial V I9 to which this member 12 is secured, is rotated for the purpose of setting those tumblers, as was illustrated with regard to the modification of Fig. 1. This member 12 is the equivalent of the member 39 illustrated in Fig. 7 which shows the first modification of my invention.

A ball 13 shown clearly in Fig. 20 is springpressed by a spring Id in an outward direction and cooperates with teeth 15 cast integrally with the dial portion |9, so as to give a click action to the dial by which it may be set by sound, if it is inadvisable to use sight setting.

The action so far of the device shown in Figs. 10 to 24 inclusive, is as follows. Rotation of the dial |9 will act through the portion 69 secured thereto, to rotate and cause the pin 12 to contact with the series of tumbler setters 36 to rotate the tumblers and set them so that their gatings 32 will align with the fence 21 as was the case in the first modification. During this rotation the clutch member 65 will remain fixed on the shaft 34 and the clutch members 61 will be springpressed by the spring 13*, illustrated in Fig. 22 so as to fit against the cam 56 of the plug 55, and to rotate with the plug and the whole dial assembly and relatively to the clutch member 65.

Figs. 22 and 23 show quite clearly the cooperation between the cam 56 of the plug 55 and the sliding clutch members 63. Normally the plug 55 will be held against movement relatively to the dial l9 and its barrel portion 2| by the locking mechanism of the plug, that locking mechanism being not shown herein, since it is the usual mechanism utilized for such purposes, as will be readily understood by those skilled in the art. The clutch members 63 will abut the cam member 56 as shown in Fig. 22 and rotation of the plug and the dial |9 will permit free movement between the clutch members 63 and 65.

However, if the plug 55 is key operated from its position in Fig. 22 to its position in Fig. 23, as limited by cooperation of the lug 51 with the cutout portion 6| of washer 59, the clutch portions 63 will be moved against the pressure of spring 13* so that the teeth 61 will mesh with the teeth 66 of the clutch member 65. Rotation of the dial.

l9 will then cause positive and direct movement of the dial carried members 63 and the clutch member 65. Since the clutch 65 is mounted against relative movement on the tumbler carrying shaft 34, it follows that rotation of the dial |9 under the present conditions will cause rotary movement of the shaft 34.

Shaft 34 has secured thereto, a member I4 shown in Fig. 20 and whose action will be more clearly apparent by referring to Fig. 17. As shown in Fig. 17 and the associated figures [3, I4 and I5, the fence member 21 of the bolt 26 is separate from that bolt and rides on the pin 29 and is pressed upward by spring 15 into a position wherein it occupies the upper portion 16 of a slot in the bolt, as illustrated in Fig. 16. In that position, it co-acts with the tumblers in the usual manner as illustrated in the modification of Figs. 1 to 9 inclusive. As will be readily seen, the slot 16 is widened at the point 11, so that when the member 14 presses against the fence-carrying lever 2'! as shown in Fig, 17, it will force that member downward the length of slot 29, so that the fence 2! will be moved opposite the rather wide portion 11 of the slot 16 of, the bolt 26. This will allow the bolt 26 to move to the right under pressure of the spring 30 as is illustrated in Fig. 15 and will withdraw the locking head 25 of the bolt from locked position relative to the cut-away portion 24 of the shackle nose II. The shackle will thus be released without the incidental operation of the tumblers as is required when the key plug operation is not utilized. Incidentally, the action of spring I5 against the fence lever 2'! will press the member 14 against the wall l4 so as to maintain the post 34 secured against ordinary rotation.

The operation of Figs. to 24 is therefore as follows: Operation of the dial in the usual way will simply rotate the clutch member 63, relatively to its cooperating clutch member 65 without operating the same, but will actuate the pin 12 to set up the tumblers in the regular way. Key plug 55 will at the same time rotate with the dial. However, rotation of the key plug 55 relatively to the dial will cause the cam 56 to connect the clutch members 63 and 65 so that rotation of the dial I 9 thereafter will act directly on the clutch member 65 and shaft 34 to operate the member 14. Member 14 will move the fence carrying lever 2'1 in a downward direction against the pressure of spring 15* until fence 2! is opposite the relatively wide portion 11 of the slot 16 of bolt 26. This allows clockwise movement of bolt 26 on its pin 29 under'the pressure of spring 30, so as to withdraw the locking head 25 of the bolt from looking position relatively to the shackle ll. When the shackle is reinserted into the casing, its nose abuts pin 52 of the bolt 26, and rotates the bolt counter-clockwise. This moves the fence 2! back into the upper slot 16 of the bolt and re-establishes the mechanism as will be readily understood.

While I have illustrated a preferred modification of my invention, it should be understood that variations of the same within the scope of the appended claims will readily occur to those skilled in the art.

I claim:

1. In a padlock, a casing, a series of combination tumblers, means for setting said tumblers into a release position, a shackle, a shackle locking bolt controlled by said tumblers and adapted to release said shackle when said tumblers are in release position whereby said shackle may be withdrawn from said casing, means operable by said shackle when reinserted into said padlock casing for moving said locking bolt into locking relation to the shackle, and means actuated by said bolt in itsmovement for moving at least one of said tumblers out of release position.

2. In a look, a series of combination tumblers, means for setting said tumblers into release position, a bolt controlled by said tumblers and adapted to be released from looking position when said tumblers are in release position, rigid nonflexing means fixed to said bolt and movable therewith when said bolt is moved back into a locking position, and means on at least one of said tumblers contacted by said rigid means on said bolt for moving said tumbler out of release position as said bolt moves into its locking posi tion.

3. In a look, a series of combination tumblers having gatings, means for setting said tumblers so that their gatings are aligned, a locking bolt having a fence adapted to enter said gatings and into a release position when said gatings are so aligned, means for moving said bolt so as to remove the fence from said gatings, means integral with said bolt for moving at least one of said tumblers out of gating aligning position when said bolt fence is out of said gatings.

4. In a look, a series of combination tumblers having gatings, means for setting said tumblers so that their gatings are aligned, a locking bolt having a fence adapted to enter said gatings and into a release position when said gatings are so aligned, means for moving said bolt so as to remove the fence from said aligned gatings, and rigid means on said bolt having the same degree and path of movement as said bolt adapted to move one of said tumblers out of gating aligned position upon continued movement of the bolt after the fence portion thereof is withdrawn from said tumbler gatings.

5. In a padlock, a casing comprising parts held together by a bayonet joint, cooperating parts of said casing forming a shackle bore, and a shackle in said bore to prevent relative movement of said parts in a direction to release said bayonet joint, means in said casing for locking said shackle against outward movement therefrom, said means being operable to release said shackle for partial movement out of the casing adapted to expose one of said shackle bores, and means operable by a tool inserted through said bore whereby to release said shackle for complete outward movement from the casing, whereby said casing parts may be released from said bayonet joint.

6. In a look, a bolt, a fence mounted on said bolt, a series of tumblers forming a combination mechanism and having gatings for the admission of said fence for permitting the unlocking of said bolt, a dial for rotating and setting said tumblers in bolt releasing position, a key operated mechanism carried by said dial, and means operable by said key operated mechanism whereby to impart movement to said tumbler controlled fence independently of said tumblers and into bolt releasing position.

7. In a lock, a bolt, a series of tumblers forming a combination locking mechanism for said bolt, a dial for rotating and setting said tumblers in bolt releasing position, independent means independent of said tumblers for releasing said bolt, means carried by said dial for operating said independent means but normally maintained disconnected from the same, and key operated mechanism carried by said dial for connecting said dial carried means to said independent bolt operating means for releasing said bolt without incidental operation of said tumblers.

8. In a lock, a. bolt, a series of tumblers forming a combination locking mechanism for said bolt, a dial for rotating and setting said tumblers in bolt releasing position, a lock plug carried by said dial and normally locked thereto for movement therewith as an integral operating portion, and means controlled by key operated movement of said plug relatively to said dial for releasing said bolt independently of said tumblers.

9. In a lock, a bolt, a series of tumblers forming a combination locking mechanism for said bolt, a dial'for rotating and setting said tumblers into bolt releasing positions, means independent of said tumblers for releasing said bolt, a key operated locking plug normally locked for movement with said dial, said plug being key operable relatively to said dial for controlling said bolt releasing means.

10. In a look, a bolt, a fence mounted normally for movement with said bolt, said fence being movable also relatively to said bolt, a tumbler having a gating for alignment with said fence whereby said bolt and fence may move into said gating and into an unlocking position, and means for moving said fence relatively to said bolt whereby also to release the bolt for movement to an unlocking position.

11. In a padlock, a series of combination tumblers having gatings, means for setting the tumblers into a release position with their gatings aligned, a shackle, a shackle locking bolt controlled by said tumblers and having a portion movable into said gatings when said tumbler gatings are aligned whereby to release the shackle for movement out of said padlock, and means operable by said shackle when reinserted into said padlock for moving said shackle locking bolt into locking relation to the shackle and moving at least one of said tumblers out of gating aligning position subsequent to the movement of the said portion of said bolt out of said tumbler gatings.

12. In a padlock, a series of combination tumblers, means for setting said tumblers into release position with the usual gatings aligned, a shackle, a shackle locking bolt controlled by said tumblers and having a fence adapted to enter said aligned gatings to release the shackle, and permit withdrawal thereof from the casing, means on said bolt actuable by the shackle in its movement into the casing to move the bolt into locking relation to the shackle, and additional means operable by the shackle actuated locking movement of said bolt adapted to move at least one of said tumblers into a locking position subsequent to the removal of the fence from the aligned gatings.

13. In a lock, a bolt having a fence, a series of tumblers forming a combination locking mechanism for said bolt and equipped with gatings for said fence, a dial for rotating and setting said tumblers in position with the gatings aligned to permit movement of the fence in a particular direction and into release position, means for moving said fence in a different direction to release said bolt, and key operated mechanism carried by said dial and adapted to move said fence in said direction independently of said combination tumblers.

14. In a lock, locking mechanism, a fence, a series of tumblers forming a combination locking mechanism for said fence, a dial for rotating and setting said tumblers in release position, said fence being movable in a plurality of directions in each of which it will act to release said locking mechanism, said fence being movable in one of said directions when the tumblers are set in release position, and key operated mechanism carried by said dial for controlling the movement of said fence in another of its releasing directions.

15. In a lock, a bolt movable from a looking to an unlocking position, a controlling fence mounted on said bolt for integral movement therewith, but adapted for predetermined movement relatively thereto, a plurality of combination tumblers having gatings which, when aligned, permit integral movement of said bolt and fence into an unlocking position, and means for moving said fence relatively to the bolt whereby to permit movement of said bolt to a release position without corresponding movement of said fence.

16. In a padlock, a casing, a series of combination tumblers, means for setting said tumblers into a release position, a shackle, a shackle looking bolt controlled by said tumblers, said shackle being adapted to be withdrawn from the casing when said tumblers are in release position, and means operable by said shackle when reinserted into said padlock for moving said locking bolt into locking relation to the shackle, and means actuated by said bolt in its movement for moving at least one of said tumblers out of release position.

17. In a padlock, a series of combination tumblers, means for setting the tumblers into a release position, a shackle, a shackle locking bolt controlled by said tumblers and adapted to be moved to shackle releasing position when said tumblers are in release position, and means operable by said shackle when inserted into said padlock for moving said locking bolt into locking relation to the shackle and including means for moving at least one of said tumblers out of release position subsequent to the movement of the bolt out of control relation to the tumblers.

18. In a look, a bolt, a series of tumblers forming a combination locking mechanism for said bolt, a dial for rotating and setting said tumblers in bolt releasing position, a lock plug carried by said dial and normally locked thereto for movement therewith as an integral operating portion, means whereby said bolt is moved to release position independently of said tumblers and while said tumblers are in looking position, means of connection between said first means and said dial whereby said dial operates said means, and means whereby said lock plug when key operated relatively to said dial actuates said means of connection to connect said dial to said first means.

KARL A. BRAUNING.

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