MXPA97006254A - Cylinder closure of plug tumber with short mounting plugs, and method and apparatus fabricac - Google Patents

Abstract

A rotatable lock (10) that works with drag pins (15u) and tumbler (151) when it is placed by means of a key (16) in a cutting line (18), where the detachable mounting pins (15a) are they assemble or assemble in the lock (10) and then cut to form these pull pins (15u) and tumbler (151) for operation therein. Each mounting pin (15a) is selectively weakened in a plurality of locations (17) corresponding to the notched depth heights of the key family (16) capable of being inserted into the eye of the lock. This weakening is controlled so that the cutting of the pin can be achieved by applying rotational or linear forces applied to any part of the lock (10) except the key (16). When linear forces are used the tumbler or plug (13) can be matched to use a pull pin (15u) as a plug lock

Description

"CLAMP SUCTION CYLINDER LOCK WITH SHORT MOUNTING PLUGS, AND MANUFACTURING METHOD AND APPARATUS" BACKGROUND OF THE INVENTION The above cylinder locks have included a plurality of tumbler pegs and aligned drive pins pushed by springs against the key. The dowels are manufactured separately at selected lengths before assembling or mounting the lock. It has also been proposed to install one piece plugs in a cylinder; attain the selected elevation of the pins using an entanged key and then cut each pin, as held in this elevation by an encased key, towards two pins of the lock (US Patent Number 1,953,535). This prior method has the disadvantage that any second insertable key selected at random would be able to raise the pins and, if subjected to torque, would again cut the pins thereby compromising safety.

SUMMARY OF THE INVENTION Broadly, the present invention comprises a cylinder having a body, a pivotable plug, a cutting line therebetween, and a plurality of selectively weakened mounting pins for initial placement by a slotted key. The mounting pins are cut by the manufacturer or the locksmith using special machinery to then function as both drag and tumbler pins. These mounting pins are strong enough so that providing torque or otherwise forcing them with a key insert by the user of the lock or person with an unauthorized key or similar tool, will not cut them. It is a particular feature of the invention that the mounting pins have a plurality of selectively weakened portions or zones for controlling cuts at selected points as long as a sufficient cutting force is applied. A further feature of the invention is that the pull pins and the tumbler, even when sufficiently weak, are sufficiently strong so that the torque of a key by hand or with a tool will cause the key or tool fail before the pins are cut.

BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is a side elevation recessed view of the lock of the present invention including a casing, a plug and mounting pins placed on the key; Figure 2 is a side elevation view of a mounting pin of the present invention; Figure 3 is a view similar to Figure 1 wherein the pins have been cut by relative lateral movement between the shell and the plug; Figure 4 is a plan view of the apparatus for cutting the mounting pins and flanging together the shell and plug; Figure 5 is an elevation view of the apparatus of Figure 4; Figure 6 is a partial sectional view on line 6-6 of Figure 1; Figure 7 is a partial sectional view on line 7-7 of Figure 6; Figure 8 is an elevation view of the pin of a second embodiment; Figure 8a is an enlarged view of a slot of the plug, of the plug of Figure 8; Figure 9 is a sectional view perpendicular to the horizontal axis of the plug without the pins; Figure 9a is a sectional view similar to Figure 9, with the pins and with the plug having been rotated slightly. Figure 10 is a plan view of a second cutting mechanism, with a longitudinal axis A for use in retail locations; Figure 11 is a sectional view taken at 11-11 through the longitudinal axis A of the mechanism of Figure 10; Figure 12 is a front elevational view of a key-operated lock that is a further embodiment of the invention with the plug-and-socket plug assembly projecting; Figure 13 is a side elevational view of the plug-shell assembly removed from the padlock of Figure 12; Figure 13a is a sectional view along line 13a-13a of Figure 13; Figure 14 is a view similar to Figure 13, wherein the plug has been moved in the Y direction; Figure 15 is a view similar to Figure 12, wherein the plug-in assembly after the transfer has been placed in the padlock; and Figure 16 is a sectional view amplified by line 16-16 of Figure 14.

DESCRIPTION OF THE PREFERRED MODALITY In Figures 1 to 3, the lock 10 includes a plug-and-socket assembly consisting of a cylinder shell 11, a rotatable cylinder plug 14 with a plug collar 13c, and five (5) vertical plug passages 14a- e that extend upwardly to the casing as casing passages 11 and down towards the plug 13 or plug-in passages. Also shown are five mounting pins 15a-e, the glue 12 of the plug, the brass key 16, the cylinder cutting line 18 and the pin springs 20a-e for the mounting pins 15a-e. Each mounting pin 15a has eight (8) weakened circumferential zones defined by notches or slots 17. The pins 15a-e are made of selected material and their slots 17 are configured and provided to achieve the cutting of the plug with mounting by the manufacturer or locksmith, while preventing a compromise in safety while the lock is in service through the use of an unauthorized key or other instrument. Different manufacturers have different keyless key configurations while allowing the keys of a predetermined manufacturer to be inserted into that manufacturer's locks. The mounting pins of the invention are enmeshed or otherwise selectively weakened to reduce the force required to cut these pins; however, they are not weakened in such a way as to allow a key insert (a key with the same keyhole configuration in the key of the lock) with a different cut could be subjected to torque by hand by a tool to cause the The drag and tumbler pins are cut before the key or tool fails. The notches on the plug have a depth and configuration in such a way that only the strength of the factory or the equipment of the locksmith that is applied to portions of the plug and does not apply to the key, can cut the pins. The forces applied to the key or directly to the collar 13c of the plug in a direction parallel to the axis of rotation of the plug 13, are resisted and damped by the collar 13c which engages the shell 11. The following mounting pins were tested with diameters of notch variables: Average Force Diameter Per Internal Notch Peg to Cut 1.52 millimeters 43.13 kilograms 1.57 millimeters 47.67 kilograms 1.65 millimeters 54.48 kilograms 1.78 millimeters 63.56 kilograms 1.88 millimeters 70.37 kilograms 2.01 millimeters 81.72 kilograms 2.13 millimeters 93.07 kilograms The diameter of the internal notch (ND) was less than the total diameter or outer diameter D (see Figure 2). An internal notch diameter of 1.57 mm is preferred for the padlock pins. In the previous tests, D was 2.39 millimeters. The angle (C) of the notch was 20 ° (degrees) (Figure 2). The ratio of ND to D is preferably within the range of 63 percent to 74 percent. The present invention also includes door locksmith pins wherein an internal notch diameter of 1.88 millimeters is preferred for dowels having an outer diameter (D) of 2.90 millimeters. In the manufacture of the cylinder 10, the pins 15a-e mounting each with eight (8) weakened zones defined by the circumferential grooves 17, are manufactured to be used to produce a number of locks. In the present system, the keys preferably have eight (8) different cutting depths and five pin cylinders, creating thirty-two thousand (32,000) combinations. Each slot 17 has a width (Figure 2) of approximately .152 to .254 mm and the series of slots 17 are vertically separated (as shown in Figure 2) at approximately .396 millimeter. In the assembly of the lock 10, the mounting pins 15a-e (each of which is equal within a tolerance of + 0.0005) are placed in passages 14a-e and then cut. The series of separate slots 17 are placed in mounting pins 15a-e in such a way that they are placed on the line 18 cutting through a family of insertable keys. Figure 3 illustrates the plug 13 which is driven to the right to cut the pins 15a-e as will be explained further below. As they are cut, each mounting pin 15a is broken into an upper drive section 15u to function as a drive pin and a lower tumbler section 151 aligned to function as a tumbler pin. The casing 11 of the cylinder has an end ring portion 20 and the plug 13 has an angled portion 13a (Figure 1). A segment 20p (Figures 6 and 7) of the ring portion 20 is flanged against the portion 13a as will be described below.

Returning to Figures 4-5, the plug and flange cutting apparatus 30 includes a lock fitting 31 with a shaped opening defining a lock holder recess 32. The lock 10, with its casing 11 and the plug 13 and the uncut mounting pins 15a-e, are placed in the opening 32 with the casing 11 abutting the wall 32w. The tail of the plug 12 is engageable with the displaceable cutting pin 41. The displacement cutting pin 41 is shown in its rest position pushed to the right as seen in Figure 4 by the spring 42. A cut-off member 36 mounted in a cylindrical opening 37 is also included in the apparatus 30. a stationary mounting block 38 separate from the accessory 31. The apparatus 30 further includes a flanging unit 50 which includes a flanging ram 52 driven by a solenoid unit E. The flanging displacement pin 54 is shown in its rest position pushed away from the cylinder shell 11 by the spring 55 of the flanging pin. During operation, the lock 10, including the casing 11, the plug 13, the tail 12 of the plug and the key 16, as a whole, is placed in the opening 32 of the accessory 31. The cutting pin 41 is struck by the cutting piston 36 for applying force F to the tail 12 of the cylinder plug to move the plug 13 in the Y direction. The pins 15a-e are thus cut (Figure 3). The plug 13 is pushed back by hand, using the key 16 to the original position. Then, the flanging unit 50 drives the flange displacement pin 54 toward the segment 20p of the flanging ring portion of the shell 11 against the plug portion 13a (see Figures 1, 6 and 7). Turning to Figures 8, 8a, 9 and 9a, a further embodiment of the invention is shown wherein the pins have a certain notch configuration and the plug is configured to facilitate cutting and rotation. Each pin 60 of this embodiment has grooves or notches 61, for example, the ten (10) circumferential grooves 61a-j (shown in Figure 8). Each slot 61 has beveled or chamfered surface areas 63 to facilitate rotation of the plug and to make it more difficult to open the lock. Each chamfering 63 is inclined at an angle C towards a plane perpendicular to the longitudinal axis LA of the plug 60 (Figure 8a). The inclination of the chamfering 63 is parallel to the tangent line T which is perpendicular to the radius R of the plug 64 of the plug-and-socket assembly 65 on the inlet edge of the passage 71u of the plug (FIG. 9). The selection of this inclination of the chamfering leads to the optimal ease of rotation of the plug. The distances from the end 60b coupled with the lower key of the pin 60 to the center of each slot are indicated in Table 1 (see also Figure 8). Table 1 Letter Distance in Millimeters A 4.22 B 4.60 C 4.98 D 5.36 E 5.74 F 6.12 G 6.50 H 6.88 I 7.26 J 7.65 Each notch 61 comprises a portion of a notch to a plane Z above perpendicular to the axis LA of the longitudinal pin and a notch portion b below the line Z. The plug 64 of the plug-in assembly 65 has a flat surface 66 positioned adjacent the section 67u of the upper casing of the casing 67 to define a cut line for the plug. After cutting, and with the key inserted (not shown), the plug 60t of the formed tumbler is lifted which in turn raises the pin 60d of drag. As the plug 64 is rotated in any direction (such as in the left-hand direction); Figure 9a), the slot chamfering surface 63 helps free rotation when the pin 60t of the lower tumbler is too high or the bottom of the upper trailing pin 60d is too low. The chamfered surfaces 63 reduce the possibility of the pegs stopping the sides of the shell and the plug passages 71u, 711, in either the shell or the plug. Turning to Figures 10 and 11, a pin cutting mechanism 78 is shown having a body 79, which houses the cavity 81, a rotatable driving unit 82 mounted in the cavity 81 for rotation about the longitudinal axis A (Figure 11). The rotatable unit 82 includes the handwheel 83 and the nut 84 mounted on the rotary drive body 80. The nut 84 is able to rotate by a wrench (not shown) to rotate the drive unit 82. As the driving unit 82 is rotated, it moves the plunger 87 through the matching threads 88 in the body 80 of the unit 82, and the threads 89 in the plunger 87. The plunger 87 moves linearly in the AA direction . The plunger 87 is held from rotating by the indentation 91 having a flat surface 92 and by the vertical post 93 which engages the surface 92 to prevent rotation. The mechanism 78 includes a recess 94 of the lock holder including a shell support wall 94 that retains the plug-and-socket assembly 65 in the AA direction. In the operation of the mechanism 78, the plug-and-socket assembly 65 is placed in the recess 94, the plunger 87 is advanced until it touches the plug 64 and a wrench is then used to rotate the nut 84 a In order to move the plug 64 relative to its shell until the mounting pins 60 are cut. After the pins have been cut, the flywheel 83 can be rotated in the proper direction to rotate the drive unit 82 and thereby move the plunger 87 in a direction opposite from the AA direction. This releases the plug-and-socket assembly 65 to be removed from the mechanism 78.

Example A door lock constructed of five (5) assembly pin passages 71u, 711, defined by the aligned casing passages and plugging the assembly pins 60, as will be explained will have each plug 60 cut to form a set of pins (one pin 60t of the tumbler and one 60d tandem pin). Each mounting plug 60 has an outer diameter D of 2.39 millimeters and a reduced weakened notch diameter (ND) in the grooves of 1.93 millimeters (see Figure 8). Each assembly pin 6O has ten (10) slots 61a-j before being cut to create the tumbler-pull pin sets. Before cutting the cylinder of the door lock a locksmith is loaded. A locksmith customer provides the locksmith with a key used by the customer to operate other locks of the customer. The locksmith inserts the customer key in the lock, places the lock in the mechanism 78 and cuts the mounting pins 60. The customer then installs the door lock in his house, whose lock can be sercicio by means of the existing key of the client.

Table 2 Characteristics of the Peg Type Diameter Diameter In the line Pair of Outside of the F to Cut Torque Notch to Cut (D) (ND) Padlock 2.39 mm 1.93 mm 95.34 Kg 2.3 kilográmetros Cerra2.90 mm 1.93 mm 95.34 Kg 2.3 kilometers of measure Door The diameter ND of the notch of the pin of each of the slots is selected to provide sufficient strength so that the mounting pins 60 do not fail when the key is placed in torque (or cross-section tool to allow the penetration in the keyhole). The wrench (or tool) will fail through breakage, cutting or twisting before the pins 60 are cut. As an example, a hardened steel wrench was inserted into the keyhole of a lock of the present invention and applied a torque of 4,286 kilograms per meter to the key. The tool broke without cutting the pins 60. The slots in the pin 61a-j are also configured to create fracture or cut surfaces on both tumbler and pull pins that are not flat and which facilitate the operation of the lock. Finally, the slots 61a-j are configured so that when fractured during manufacture or modified by a locksmith, the tumbler and trailing pins 60 having end configurations including chamfering surfaces 63 are formed which aid in the rotation of the plug during the subsequent operation. Returning to the modality as shown in the Figures 12 to 16, the padlock 103 includes a lock body 104 having a plug-and-socket assembly 104a consisting of the plug 105 and the shell 106. A shackle 107, the key 108 and the jacks 110 of the toothed assembly are also shown. The plug 105 includes the collar 105c, the circumferential recess 109 of the plug, the surface 105s of the plug, and the tail 111 of the plug. The recess 109, which has a bottom 109b and sides 109s, surrounds the plug 105 (see Figure 13a). The shell 106 includes a portion 113 of the upper housing and a portion 114 of the lower housing. The portion 113 of the upper housing includes five passages 116 of the plug of the shell. The passages 117 of the plug pin in the lower housing portion are aligned with the housing passages 116. The jagged pins 110 are placed in these passages. The key 108 includes four (4) notches 108a, which are aligned with the bottoms of the pins 110 when the key is inserted into the keyhole of the plug 105. The distance between the laterally adjacent centers of the passages 116 and 117 as shown in FIG. Figure 13 is the distance X. Also shown in Figure 13 and 14 are the springs 112 which engage the upper parts of the pins 110 which push them down to the key 109. Returning to Figure 14, the plug 105 has been moved in the Y direction by a force necessary to cut the pins 110 in the selected indentations 115 along the cutting line (SL). By this cut, the upper drive pins 119a-e and the lower tumbler pins 121a-e are formed. In addition, the four lower peg pins 121a-d closest to the keyhole entrance each move at a distance X to align with the four upper pegs 119b-e. The upper trailing pin 119a falls towards the recess 109 of the plug where it is retained against the bottom 109b lowered by the spring 112a. With the upper trailing pin 119a positioned in this manner, the plug 105 can rotate but can not be removed from the shell 106 because the sides 109e engage the upper trailing pin 119a. This anti-withdrawal feature adds to the security of padlock 102. Pin 121e of the lower tumbler becomes inactive in its plug passage 117 which serves as a trapping hole in the pin section. As can be seen in the Figures, passages 116 and 117 have dimensions of diameters of d. The pins 110 are essentially equal but of slightly smaller diameter than the passages. The spacing between the passages is small enough so that an adjacent pin, such as pin 121a of the tumbler holds an upper drive pin such as pin 119b before pin 119b of the tumbler has moved outward from the pin. under the trailing pin 119b (see Figure 14). Alternatively, the antiretiro feature of the present invention is also useful in conventional pin tumbler locks wherein the tumbler and pull pins are first formed and then assembled or assembled. In this lock, an additional wrapping passage and an aligned plug passage are formed where a cut-off pin is placed. The plug includes in recess. When the plug and a casing are assembled or assembled, the plug is cut and a portion enters the recess of the plug to prevent removal of the plug while allowing rotation of the plug in the casing.

Claims (26)

1. R E I V I N D I C A C I O N E S: 1. In a cylinder lock having a casing with a longitudinal casing shaft, a stretchable plug mounted inside the casing for rotation about the casing axis, a keyhole in the plug, the keyhole extends to along the axis of the casing, a plurality of pin passages aligned in the casing and the plug, the passages communicate with the eye of the lock, the mounting pins are slidably placed in the passages, and the mounting pins each one has a longitudinal pin axis and a series of weakened zones spaced along the axis of the longitudinal pin, each of the mounting pins is capable of being cut along the delimited areas towards the upper drive pin and a lower tumbler pin during the application of a shear force applied to the mounting pin, the improvement where: a) the weakened areas of the mounting pins have a resistance enough to prevent cutting them by applying the greater rotational force that can be applied to the plug through the keyhole by each key-like tool that can be inserted into the eye of the lock.
2. 2. The cylinder lock according to claim 13 wherein: a) a cut line is defined by the opposite surfaces of the casing and the plug, b) the casing has an outer surface through which the passages of the cassette extend; plug in the plug; and c) an outer surface of the plug through which the pin passages extend is flat and defines the opposite surface of the plug. The cylinder lock according to claim 2, wherein: a) each weakened zone is considered to define, after cutting, a drive pin with a lower end having a chamfered outer edge. The cylinder lock according to claim 1, wherein: a) the passages in the plug are separated along the axis of the longitudinal envelope; b) the outer surface of the plug, laterally of the longitudinal casing shaft and the passages along it, define a cylindrical configuration, c) each weakened zone is configured to define, after cutting, a tumbler trap with an upper end having a chamfered outer edge; and d) the chamfered outer edge is oriented around parallel to the tangent line towards the external surface of the plug which is cylindrically shaped and which is immediately adjacent to the passages of the plug. The cylinder lock according to claim 4, wherein the weakening zones are each defined by a notch having frangible portions remaining in a plane perpendicular to the axis of the plug. 6. In a cylinder lock having a casing with a longitudinal casing shaft, a rotatable plug mounted within the casing for rotation about the casing axis, a cut line between casing and plug that is defined by surfaces opposite the plug and socket, a keyhole in the plug, the keyhole extends along the axis of the casing, a plurality of plug-in passages aligned in the casing and the plug, the passages communicate with each other. the keyhole, the mounting pins are slidably placed in the passages, the mounting pins each have a longitudinal pin axis and a series of weakened zones spaced along the axis of the longitudinal pin, each of which Mounting pins are cut along the weakened areas towards the upper drive pin and a lower tumbler pin during the application of a shear force applied to the pin. Assembly, the improvement where: a) the plug has an external surface through which extend the plug passages in the plug; and b) the external surface between each of the passages of the plug of the plug and through which each of the pin passages extends, is flat and defines the opposite surface of the plug. The cylinder lock according to claim 6, wherein: a) each weakened zone is configured to define, after cutting, a drive pin with a lower end having a chamfered outer edge. 8. In a cylinder lock having a casing with a longitudinal casing shaft, a rotatable plug mounted inside the casing for rotation around the casing axis, a lock blade in the plug, the lock blade is extends along the axis of the casing, a plurality of pin passages aligned in the casing and the plug, and passages communicating with the eye of the lock, the pins are slidably placed in the passages to move towards and away from the keyhole, the pins each having a longitudinal pin axis and a series of debugged zones spaced along the longitudinal pin axis, each of the pins is cuttable along any of the weakening zones and it is cut along one of the weakening zones towards the upper trailing pin and a lower trowel pin, the improvement where: a) weakened areas of the trailing and tumbling pins They have a sufficient strength to prevent cutting them along the weakened areas by applying a larger rotational force that can be applied through the plug through the keyhole by each tool similar to a key that can be inserted in the keyhole. 9. A method for manufacturing a lock having a casing, a rotatable plug rotatably mounted within the casing and having a keyhole for the insertion of a key [which fails structurally when subjected to torque by the application of a first force], a cutting line between the casing and the plug, and a plurality of aligned casing and plug passage comprising the steps of: a) assembling or mounting the casing in the plug with the casing passages aligned with the passages of the plug; b) place within each aligned passageway of the casing and plug in a mounting pin having a series of separate weakened zones and a resistance such that the application of a first shear force to the mounting pins is equal to less than the force of Maximum rotation can be applied to the plug through the keyhole by each key-like tool that can be inserted into the keyhole and do not cut the mounting pins along the weakened areas; c) aligning a selected weakened area of each mounting pin with one another for cutting; and d) then cutting the mounting pins along the selected weakened areas by applying a second cutting force greater than the maximum rotational force along the cutting line to cut each mounting pin into two pin sections. The method according to claim 9, wherein the plug has a flat outer surface through which each of the plug passages extends in the plug, the method wherein: a) the second force of Cut is applied along the flat surface. 11. A method for manufacturing a lock having a shell with a longitudinal shell shaft, a rotatable plug with a longitudinal socket shaft and a keyhole for the insertion of a key along the axis of the plug; a plurality of pin passages aligned in the housing and the plug, the plug has a flat outer surface extending along the axis of the longitudinal plug between each of the plug passages and through which each of the pins extends. pin passages in the plug, and a cut line between the casing and the plug that is defined by the external flat surface of the plug and an opposite surface of the casing, comprising the steps of: a) assembling or assembling the casing and the plug with the plug passages aligned in the casing and the plug; b) placing within the box a plug-in passage aligned with a mounting plug having a series of separate weakened zones; c) aligning a selected weakened area of each mounting pin with one another for cutting; and d) then cutting the mounting pins along the selected weakened areas by applying a cutting force applied along the flat surface in the direction of the plug axis to cut each mounting pin into two pin sections. 12. The apparatus for cutting the mounting pins in a lock having a casing with a longitudinal casing shaft and a plug with a longitudinal plug shaft rotatably mounted therein, by applying a force in the plug parallel to the shaft of the plug, comprising: a) a frame or frame; b) a lock-holder recess in the frame for receiving a plug-and-socket assembly comprising the shell and the plug, the recess includes a shell retaining means for retaining a shell against movement during cutting; and c) a plug transfer means for moving the plug while retaining the casing, and the plug translation means, in turn, comprises: i) a plunger means engageable with the plug to move towards and against the plug , and ii) a rotating drive means connected to the plunger means for moving the plunger means against the plug in order to move the plug as the casing is retained. 13. In a lock having a casing and a plurality of casing passages in the casing, a plug rotatable within the casing, a keyhole and a plurality of passages in the plug, in the plug, aligned with the passages of the casing, the enhancement comprises: a) a pair of severed plug sections in each of the aligned passages of the casing and plug, each pair of cut plug sections being formed of separate mounting pins not originally cut in each of the aligned passages of casing and plug; b) an annular recess in the plug aligned with one of the passages of the casing; and c) the severed plug section includes: 1) a first plug section cut in one of the casing passages, the first section being a cut-off part of a first mounting plug originally in a passageway of the casing, the first section of cut plug extends also towards the recess of the plug, and 2) a second section of cut pin placed in an adjacent plug passage, the second cut plug portion being a cut-out part of the first mounting plug. 14. In a lock having a casing and a plurality of adjacent casing passages, a rotatable plug mounted within the casing and having a keyhole and a plurality of adjacent plug-in passages aligned with the casing passages, the improvement comprising: a) a pair of cut-off sections in each of the aligned passages of the casing and the plug, each pair of cut plug sections being formed of separate mounting pins not originally cut into each of the aligned passages of the wrapped and the plug; b) an annular recess in the plug aligned with one of the shell passages; and c) the severed plug sections include: 1) a first section of a first plug cut in a casing passage, the first section being a cut-out part of a first mounting plug originally in a passage of the casing, the first section being extends also towards the annular recess; 2) a second section of the first mounting plug in the passage of the adjacent adjacent plug to a passage of the casing, and 3) additional pairs of plug sections placed within each of the other aligned casing and plug passages, with each section of each pair bumping against the other section of that pair along a cut line between the casing and the plug when a key for the lock is inserted into the keyhole. 15. The lock according to claim 14, wherein: a) the pin section in each shroud passage is a cut portion of the plug section in the next adjacent plug passage. 16. In a lock having a casing with a plurality of adjacent casing passages, a rotatable plug mounted within the casing and having a keyhole and a plurality of adjacent plug-in passages aligned with the casing passages, and a pair of cut plug sections in each of the aligned casing and plug passages, each pair of the cut pin sections is formed of separate mounting pins not originally cut into each of the aligned casing and plug passages, the improvement wherein: a) the pin section in each of the casing passages is a cutout portion of the mounting pin originally in the next adjacent plug passage, with each pin section of either pair abutting the other plug section. Pin that pair along a -cut line between the casing and the plug when a key is inserted into the keyhole for the lock. 17. A method for manufacturing a lock having a casing, a rotatable plug having a keyhole and an annular recess, a cut line between the casing and the plug, a plurality of casing passages, in casing and a plurality of plug-in passages aligned in the plug, comprising the steps of: a) assembling or mounting the casing and the plug with a selectively weakened mounting plug in each of the aligned passages of casing and plug; b) then cut each mounting pin by applying a cutting force that moves the plug along the cutting line to cut each plug into two pin sections, one plug pin for the casing and the other pin for the pin tumbler. Plug; and c) further moving the plug into the casing to align a casing passage with the recess of the plug. 18. The method according to claim 17, wherein a cut-off pin is placed partially in the recess after further transfer of the plug, and each cut-off pin other than that cut-off pin that is placed in the plug. recess, it is held by a plug of the adjacent tumbler after further transfer of the plug. 19. The method for manufacturing a lock having a casing with a longitudinal casing shaft and a plurality of adjacent casing passages positioned along the axis of the casing, a rotatable plug having a longitudinal plug axis mounted within the casing. Wrapped for rotation about the axis of the plug and having a keyhole in a plurality of adjacent plug passages positioned along the axis of the plug and aligned with the casing passages, the casing and plug define a cut line between the casing and the plug, the method comprises: a) moving the plug axially along the axis of the casing and towards the casing to a first axial position wherein the casing and plug passages are in a first aligned position; b) place a cut-out mounting plug in each passage of the casing and the plug; c) moving the plug axially within the shell to a second axial position to cut each mounting pin along the cutting line toward a cut-off pin attached to each shell passage and a cut-off tumbler pin positioned at each end. plug passage; and d) aligning the casing passages with the plug passages in a second aligned position wherein the driving pin cut in any aligned casing passage is a cutout portion of the plug of the tumbler in the next passage of the adjacent aligned plug, with the tumbler peg on each passage or plug bumping against the drive pin in the shroud passage aligned in the cut line when a key is inserted into the keyhole for the lock. The method according to claim 19 further comprising: a) fixing the plug in the second axial position. 21. The method for manufacturing a lock having a shell with a longitudinal shell shaft and a plurality of adjacent shell passages positioned along the axis of the shell, a pivotable plug having a longitudinal socket shaft mounted within the shell. wrapped to rotate about the axis of the plug and having a keyhole, and an annular recess and a plurality of adjacent plug-in passages positioned along the axis of the plug and aligned with the casing passages, the casing and the plug define a cutting line between the casing and the plug, the method comprises: a) moving the plug axially along the axis of the casing and towards the casing to a first axial position wherein the passages of the casing and plug are in a first aligned position and the annular recess is separated along the axis of the plug from the first aligned position of the passages of the casing and the plug; b) place a cut-out mounting plug in each of the aligned casing and plug passages; c) placing a spring means in each of the shell passages to push the mounting pins towards the plug passages; d) moving the plug axially within the shell to a second axial position to cut each mounting pin along the cutting line toward a cut-off pin attached to each passage of the shell and a cut-off pin attached to the shell. each passage of the plug; and e) aligning the casing passages with a casing passage aligned with the recess of the plug and with the driving pin in a passage of the casing extending towards the plug recess under the influence of the first spring means and with the rest of the casing passages aligned with the plug passages in a second aligned position wherein the pull plug cut in any aligned casing passage is a cut-off part of the plug of the tumbler in the next adjoining aligned plug passage, with the pin of the tumbler at each aligned plug passage abutting against the pull pin in the shell passage aligned in the cutting line when a key for the lock is inserted in a keyhole. 22. A lock comprising: a) a padlock body; b) a plug-in assembly comprising: i) a shell with a plurality of separate shell passages, ii) a rotatable plug rotatably mounted on the shell in a first position, the plug has a keyhole and a plurality of plug passages aligned with the casing and movable passages to a second position with some of the plug passages aligned with the next casing passages adjacent from those where they were aligned in the first position, iii) a mounting pin selectively weakened in each of the aligned passages of casing and plug when the plug is in the first position, and iv) means for pushing the mounting pins towards the aligned plug passages, c) the casing-plug assembly is mounted on the body of the padlock with the plug in the first position and with the movement thereof to the second position; and d) an interlocking or closing means for retaining the plug in the second position once the plug has moved from the first position to the second position. 23. A lock comprising: a) a padlock body; b) a plug-and-socket assembly comprising: i) a shell with a longitudinal shell shaft and a plurality of shell passages spaced apart from each other, by a predetermined distance, along the axis of the shell, ii) a pivotable plug, with a longitudinal plug shaft rotatably mounted on the casing in a first position along the axis of the casing, the plug has a keyhole at one end thereof and a plurality of plug-in passages separated from each other by a predetermined distance, along the axis of the plug, the plug is mounted within the casing for movement along the axis of the casing, from the first position with the casing and plug passages aligned with each other to a second position with the plug moved along the axis of the shell by a predetermined distance and with some of the shell passages aligned with the following plug passages adjacent to each other. from those with which they were aligned in the first position, iii) a mounting pin placed in each of the aligned passages of the casing and plug, the mounting plug has a series of wearable zones severable, some selected from which cut when the plug moves from the first position to the second position; and (iv) a spring means in each of the shell passages that urges the mounting pins toward the aligned plug passages; c) the plug-in assembly is mounted on the padlock body with the plug in the first position for the movement of the plug into the padlock body from the first position to the second position; and d) a locking or latching means for retaining the plug in the second position against movement along the axis of the casing once the plug has moved from the first position to the second position. The lock according to claim 23, wherein: a) the locking means includes an annular recess in the plug sized to receive a cut-off part of one of the mounting pins when the plug is in the second position the recess being separated by a predetermined distance, along the axis of the plug from the aligned passage of the casing and the plug closest to one end of the plug, when the plug is in the first position. 25. The lock according to claim 24, wherein: a) one end of the plug is placed out of the lock body when the first position is placed inside the body when it is in the second position. 26. The lock according to any of claims 13 to 16 or 19 to 25, wherein: a) the pins have sufficient strength to prevent cutting them by application and a rotational force applied to the plug through the KeyHole.