GB2202573A - Door lock mechanism - Google Patents

Abstract

A door lock mechanism employs both a key A and a permutation disc C which are operated in sequence to free a door bolt for retraction. Insertion of the key allows the lifting of a lever J1 to reveal the characters C4 on the permutation disc and allows rotation of that disc. <IMAGE>

Description

SUMMARY OF THE INTENTION The present invention provides for the structure of a burglary-proof, purely mechanical locking means, entitled concord lock hereunder, for which the object envisaged hereunder lies essentially in the integrated embodiment of the structure of a three-section lock typically used as the door lock to discourage burglary attempts to break in, with the structure of a combination disk lock typically used to lock up a safe box, chest mostly installed indoors.Both structures being unrelated to each other and can be defeated separately by burglars, whilst causing some trouble to the user at the same time, because they have to be unlocked independent of each other when intended so to do, so the embodiment hereunder not only simplifies the unlocking procedure but also fortifies the anti-burglary effects as always expected of a locking mechanism.

The technical features for which the invention device is claimed as distinguished from other executions include: that part for fitting on the outdoor side, comprising: a multiple curvilinear-profiled key, of such pattern as JYS and A , a fungus-shaped bolt shaft, a bowl-shaped charactery loop, and a body swivel seat which can consist of a fore part and an aft part if necessary, to facilitate production, for assembly the hey i:: inferred into the ng shaft, on the periphery of the bolting shaft are drilled a number of small holes by taking into account the depth and layout of the keyway, the VS model being symmetrical by 180 degrees, the # model being symmetrical by 120 degrees, into the small holes are filled bead beams of such length, long or short, to come out flush with the outer rim, a coulisse in intervals of 90 degrees, in provided along the circumference inside the fungus cap of the bolt shaft, so that a pair is formed 180 degrees apart, altogether there are two pairs confronting each other for the setting of steel balls therein, by the provision of 14 cavities in tight-up sealing against said steel balls concentrically in the bottom of the corresponding bowl configuration, the orientation of the characterv loop relative to the bolt shaft can be fixed, in the meantime the 14 cavities provide for inwardly round protrusions because the charactery loop took shape out of punching of steel sheets, a notch is drilled in each of the four corners present in a slope up and down the surface in contact with the swivel seat for the lock, of a size slightly larger than half a steel ball set in the perimeter of respective cavities, into which is fitted a steel ball to account for four steel balls in two sets each subject to impact with the fourteen protrusions, thereby making possible agile rotation, in the midst of the swivel seat for the lock are provided round holes whereof tha part in front permit only bolt shaft for insertion for rotation, the part in arrear, slightly larger than the snap ring, accommodates round rim guard of a sword stem for free passage, in and out, above the round hole in the parallel direction is provided a wedge keyway to facilitate insertion of a free moving block which can slide to and fro, further above the coulisse for the free moving block is provided a cross groove to permit insertion of mid-shaft board, underneath it there may be inserted a curved groove for the free moving block, whereas into the part overhead there maybe inserted a butterfly cap lid groove, above the lock body further up is provided a semi-curved slope to facilitate operative rotation of the butterfly disk lid, the uppermost point of the disk is provided an opening for pivoted fitting of the butterfly rotation disk.Furthermore, up the lock body symmetrical to outstanding ball stops over the perimeter of the bolt shaft and on both the advancing and regression points of the free moving block are drilled small holes each accommodating the ball stops and spring, they were secured with sleeving or individual packing means to avoid skipping, finally the round guard of the sword lever is engaged into first coulisse of the free moving block, the grip filled into channel groove of the bolt shaft, the tipfront of the sword inserted into the door frame, the square hole on the hip of a single arm lever to be discussed later in.

the text serves to fix that part of the lock integral therewith and which shall have been fixed on the outdoor side of the door from a point indoors by means of fixing sheet and screws. That part of the lock indoors is composed of a shell casing, several sets of rotation wheels, including springs, inter-wheel non-rotating washers, plus a shaft mount, a rotation wheel fixing knob, a two-section latch, a hook board including upper and lower springs, a spring bolt which consists of rotation wheel knife, common lock head, spring lock bolt and to fixing screws, including frontal and hinder springs, a bottom casing and an indoor handle.For installation the rotation wheel taken in one piece and a washer are grouped, fitted into the shaft mount, then a spring is mounted for bearing and nailed centrally into the spherical casing; in addition; the rotation wheel fixing knob is set with both clips inwards,and stuffed forcibly into the beadstringlike coulisse, whereupon the casing sets with the oblong opening facing up and is meant for laying on the table.In the hollow shaft mount shall be inserted a spring, the two-section bolt, hook sheet and spring latch superposed in a manner so that the two-section bolt is clamped into the hooked groove for the hook sheet, the opening in front clamped into clamping coulisse on either side of the bolt head of the spring bolt, the slat up the tail end of the spring bolt passing a cross groove up the tail end of the two-section bolt for fitting into the casing, the lock bolt head for extension outside the shell casing way from the engaging groove on the right side, the slat for the handle at the tail end penetrating off the wall of the rear casing for the fitting of the handle on the indoor side.The hip of the single arm lever shall be held so as to permit rotation of the hip across the cross groove of the spring bolt, passing the longitudinal groove of the hooked sheet so as to reach the space for rotation of the two-section bolt, the head engaged into the hollow-set shaft mount wherein spring has been loaded previously, screws will be run past the underside of the beadstring groove, into the cross groove for the two-section bolt, through the longitudinal groove of the hooked sheet, transverse groove of the spring bolt, to reach the bottom sheet of the casing, all these elements to be penetrated with washers each of suitable thickness so as to maintain spacing both longitudinal and horizontal, the interior of the lock body assembled as much will leave only the hip of the single arm lever outstanding from the round hole on the bottom of the cashing sheet, this in order to correlate in close association with the sword lever of the outer part of the lock as having been mentioned earlier herein, all the four corners fixed all right with screw nailing, and this is structural logic of the invention which appears distinguished by comparison with conventional executions; yet further details of the invention are given in the following; and which are considered characteristic of the invention: (1) multiple surfaced, curvatured key: in view of the fact that most of the keys in common use are flat, some round in execution, in the case of flat execution the bead stops are lined up in straight line, in the case of round execution the bead stops are short and not deep enough, and as such can be defeated easily by wilful challenge, the invention structure, including both Cs and j models, are treated with multiple surfaces, to maintain the irregular undulation characteristic of a flat key, and the multiple dispersion feature characteristic of a round key, at the same time, so that the bead stops on entering the keyway will find themselves virtually exposed in a labyrinth, so that the keyway can hardly ever be run through successfully unless the right key is fed in; (2) intergration of the lock bolt and the disk shaft: in spite of the incorporation of combination code and unlock key at the same time, they being unrelated to each other, so that a conventional safe box or chest can be opened by unlocking them separately by wilful means other than legitimate, whilst for the subject invention the rotation disk, that is, the bolt core, will never move a bit where the right key is wanting or an incorrect key feeds in instead; (3) the key for insertion regardless of direction, up or down: the curvatured, multiple surfaced key under the invention embodies the advantages of both a flat and a round key and is free of shortcomings of either, the invention key can be inserted without reference to direction, be it up or down, right or left, be it the model that is symmetrical by 180 degrees apart, or the model that is symmetrical by 120 degrees apart, in other words, in the absence of the correct key, you have to run it two bouts by locking twice for each turn of ,sz model, and run it three bouts by locking three times for each turn of i model, this means reasonable convenience the proper user and absolute difficultly for burglars; (4) Shaft core charactery bound by two beads: in the case of a regular combination lock panel, it is embodied with the shaft core by casting fabrication, and the driver wheel inside is mounted to the shaft core, so that the notch position can't be changed with ease, whereas with the present invention the lock bolt core together with the charactery loop are aligned against 14 cavities with reference to four concentrical coulisses, so that once the orientation for both of them is set, hermetical seal can be secured by filling two steel balls into each of the four coulisses executed in two pairs apart from each other by 180 degrees; (5) Charactery as a substitute for combination code: in a regular combination lock it is usually provided with digital codes which provides for two to three digit codes for each wheel, and such codes are hard to memorize, easy to forget, the invention applies 26 alphabets an the symbols +1-instead, each wheel encoded with a certain identifying charactery which can represent, for example, the initials of the user or other identity marks so that the user can never forget the right code to apply anytime; (6) double-functional rotation disk lid:The rotation disk lid provided at the uppermost point of the lock body, it will as such serve not only to camouflage the charactery code from wily, wicked attempts at it, but also permit manipulation of the free moving block to move about to and fro by virtue of interconnection with a medium shaft piece underneath, moreover, in a joint effort with the moving block, pushpull sword stem and single arm lever it is possible to select the operative rotation disk or lock latch, as depending upon the knob chosen for operation; (7) free moving block and lock bolt shaft: the free moving block being a trapzoidal shoe clinging up the lcok bolt shaft, which can only move back and forth rather than rotate, this being complemented by the feature to permit rotation only instead of back and forth movement on the part of the lock core shaft, so that an advance will actuate only the rotation disk, whilst a backing will actuate but the lock bolt, both mechanism can't be transmitted altogether, thereby totally frustrating any wicked attempts to unlock; (8) full utilisation of the lock core snap ring: in general practice the snap rign is executed just by fixing the lock core shaft relative to the hinderside of the lock body, for this invention use has also been made of the in/out feeder threshold of the free moving block as well as revolving track for advancing and for the backing movements respectively, namely, two/three accessing ports for the free moving block; (9) incorporation of bead stops for the free moving block: incorporation of bead stops and springs relative to positions of accession and recession respective of the free moving block and of the lock core shaft bead stops, this in order to accommodate comprehensive lockout without distinction up or down, for one thing, and to oblige the use of key in control of the disk lid switch, thereby frustrating wicked testing attempts; (10) integration of the lock body with the rotation disk seat: so that protection is ensured for the lock body, that the disk seat integral with the lock body is improved of rigidity, in the meantime the rotative stability of the lock core shaft is reinforced; (11) flip-flop latch bolt head: in view of the common execution whereby two lock heads are provided down and lip the second section lock latch and the spring bolt in the case of a three-section lock, such lock heads being different in model and calls for oppression to back out in front and on the hinderside separately in use, failing to accommodate to the practice of up and down oppression that is basic to a rotation handle, the invention provides for the two-section latch in concerted interdependence with the spring door to which the lock is to be fitted, both sharing a common lock head, this not only simplifies material requirement, but also derives strength as a result of correlated, interdependent support, of endurance to wicked defeating efforts, sawing efforts, what with the provision of fore and aft, up and down oppression slopes thereon it permits in fact all adjustments within reasonable limits and as such is recommended for fitting with virtually any door or chests; (12) Two-section latch and spring door: the third section of the three-section lack consists essentially of the operative spring latch, as the pivot of the spring latch is installed in the second section latch, so it can be opened only after the second section latch shall have been opened, on the contrary, for lockup the spring latch will be closed concurrent with the locking action,whereas for the second section latch the key will have to be used to lock up the lock, this has been conventional executions whilst the present invention provides for the handle on the indoor side of the spring latch to pass through two-section latch to a point beyond the casing while only movement latitude for just one-section is maintained so that both parts will work in close association and perfect harmony; (13) dual spring to safeguard failure: spring set provided by symmetry up and down the hooked plate serving to control the two-section latch and also in front and on the hinderside of the spring latch, this arrangement meant to avoid occurrence of failure emerging all at once, thereby safeguarding safe use of the lock; (14) incorportation fo rolling beads to increase agility: respectively about the interfacing front of the charactery loop with the disk seat, the supporting front of the lock head with the two-section latch so as to bring both parties in close union safeguarded from slip; (15) incorporation of pointed protrusion or partitioner for the rotation wheel: in conventional executions the combination coded rotation wheel is provided with a notch over the smooth-processed perimeter, and as such is very vulnerable to wicked attempts to test with success where the notch lies, whereas the present invention provides in view of this shortcoming, pointed protrusions or 90 degree torsion partitioners corresponding to the number of charactery loops established, so tat the entire outer rim is furnished with notches everywhere, the complication is redoubled at least 283=21952 times as difficult, as wicked attempts will hardly make further progress on reaching the third section, when the burglar will find that it was not the real notch and lock up the second section so as to bring the sluice knife of the spring latch off the simulated notch in order just to perform another trial;; (16) counter-set sluice tool as appendage to the spring latch: the spring latch, whether moving forwards or backwards, shall have to be carried by the twosection latch, as having been disclosed heretofore, this means that without the right and matching key, anyone trying to challenge the invention lock, say, by means of a universal key, can only expect the chance of success to be one out of 21 952 attempts so to do because it will take at least ten bouts tyring to yield the right result, five turns in repeated manipulation, in the case of tJ model, and fifteen turns of repetitive manipulation, in the case of R model, this renders virtually impossible any notion of successful attempts to unlock without the ke; (17) internal rotation wheel built to the casing: only one single sword lever is used to link up the outer lock with the inner lock, this minimises possibilities of damage to the door frame, and the inner lock will remain sturdy from loosening even if the outer lock is defeated when the worst befalls, besides, the internal rotation wheel, installed inside the round casing, will deny and not yield to open unless accurate, stably run operation prevails; throughout the unlocking procedure; (18) rotation wheel fixing device: permits total fixing of the entire rotation wheel, this being in fact easier to open than in the case of a regular three-section lock, as it calls only for insertion of the key into the outer disk for casual rotation or else for application of only the first, or the second wheel, this means fixing of the second/first wheel, and this is particularly useful and convenient when there is always somebody left at home or when it is considered troublesome to use charactery code, say, where children or disabled, aged persons are concerned; (19) rotatvie fixing of the indoor handle: slat reserved up the tail end of the spring latch, halffolded for penetration across the upper side of the tail end of the two-section latch for projection unto the hinderside of the casing, so as to accommodate mounting of the indoor handle, which is designed to be eccentrical and in executions like 180 degree reversion, it will fix immovably and refrain from yielding to any sliding movements, thereby frustrating any wicked attemts to unlock from a point outdoors.

Performance advantages: I. For those users just before departing for long period of absence proceed with the following procedures after completion of installation: 1. Closing the door, and the door-closing spring latch will lock up of its own accord; it has to be noted that to facilitate installation all the interior components have to remain in open status while assemblage takes place, but that the spring latch, including parts M, N, and 0, acted upon by both springs in front and on the hinderside, will bring the latch head m projected off the lock casing W by one section, 2; accordingly, key A can be inserted into lock core shaft B1 irrespective of setting, up or down, noting that lock ocre shaft bead stop B3, duly acted upon by corresponding bead stops on the part of the lock body and by the spring D3, will converge towards the shaft core, the key on insertion will push the core shaft bead stops to displace flush with the interfacing between the rotation front of the lock body D1 and the lock core shaft B3; thereby facilitating rotation; 3.Holding the charactery loop C3 and rotate it for two full tuns counterclockwise, for example, you start with 't ' and draw close at '1t' too, because by then for both the charactery loop C2 and the lock core shaft B2 respective cavities corresponding by a shift of 180 degrees will have been filled with steel balls, and henceforth integrated with the hinderside D4 of the lock body by axial orientation of snap ring E, that is why by rotating charactery loop C3 lock core shaft B, snap ring E and sword lever G, single arm lever L will be brought into rotation as well, also since the snap ring E 2 is engaged into the detent coulisse of free moving block F2 for rotation, single arm lever L1 is restricted to rotation within the space confined in two-section latch Q1 and above the hooked plate, wedgelike hook P2, in the beginning the lever arm sets leftwards horizontally L1, the first cycle will compress P2 to shift downwards so that P3 is eventually forced off detent groove Ql-l, as L1 continues rotation it will enter detent groove Q1-4 to actuate the right side of Q1-4, so that the two-section latch Q is displaced rightwards, L1 continues rotation to overtake P2 by the peak, P2 released of compression to rebound upwards, P3 getting engaged into detent groove Q1-2, whereby second cycle of rotation begins, the same principle applies to the hook plate, L1 bearing instead upon the right side of Q1-5, this further brings the two-section latch to displace rightwards, P3 getting engaged into detent groove Q1-3, furthermore, because of penetration through 07 M7N7 the spring latches. m n o are intergrated together by screwnuts, m3 interwined with two-section latch Q3, in the meantime indoor handle n4 passing through the two-section latch groove Q4 is provided but limited displacing latitude, the two-section latch displaced for two sections rightwards will bring the spring latch to displace rightwards as well, so the necessary prequisite for rotation of the rotation wheel is that the sluice tool 01 on the hinderside of the spring latch carries the round casing W9 into groove W2, that is, total departure from three rotation wheel notches TW 1 and pointed protrusion 2; 4. removing rotation disk lid J1, since 52 is pivotedly mounted to rotation disk seat H5, underneath there is provided engaging coulisse 53 to permit engagement with mid shaft plate I1 inserted headlong, the underside I2 for engagement with free moving block F4, F1 inside the coulisse serving to accommodate engagement of sword lever G2, handle G1 for insertion into lock core shaft B5, channel groove G3 for insertion into complementary channel U2 over the tail end of single arm lever, U4 for insertion into shaft mount round hole just restricted by spring 16, as a result thereof J1 will bear upon 53 to push I1 to swing forth, 52 to swing back, F in its entirety pushed to displace backwards, this driving altogether G and L, compelling 16 to back out, so that single arm lever L1 is brought off the space of the two-section latch Q1, L5 thrusting against shaft mount S2, whereupon rotation of charactery loop C3 serves to rotate the correct rotation wheel only; 5. Dlanipulation of charactery loop C3 irrespective of direction, clockwise or counter to it, will set it rotating for four turns before resetting to '* ', whereupon rotation of single arm lever L1 will just carry projection 53 on the first rotation wheel, to follow that, female projection 54 will go approx.

one full turn before carrying the second rotation wheel U3, next, U4 will continue rotaton for one full turn or thereabout before actuating the third rotation wheel V3, the overall result was to the effect that respective notches TUV1 of each rotation wheels will no longer be aligned to sluice tool 01, but eventually reset to or other charactery being set to, all this in order that the notch El for the snap ring is brought aligned to the underside of the free moving block, so as to get rid of restriction imposed by F3, 6. closing rotation disk lid J1, this in order to cover up the charactery marks on the one hand, to bring the single arm lever L1 back to the space of the two-section latch Q1, on the other hand, so that attempts dt open the lock, say with a universal key by wicked rascals, for example, will fail to move the rotation wheel right from the start, let alone possibility to open the lock, in addition, as bead stop springs are provided on the advance/receding positions corresponding to the free moving block F5 and F6, lock core shaft B3, positions up and down, it is impossible to open the rotation disk lid without the correct and matching key; 7.

disengaging the key A, and the user may depart free of worry.

II. Procedures to proceed with upon return is as follows: 1. Let key A be inserted into lock core shaft B1 casually, the interior functions remaining substantially as described hereinbefore; 2. lift rotation disk lid J1, the advancing snap ring E in the free moving block changed to be restricted by F3, the single arm lever L1 leaving the space provided for by two-section latch Q1, L5 bearing against shaft seat S2; 3. Holding the charactery loop C3 and turn it clockwise until setting of the code character is completed when alignment with wheel V is made at the fourth turn, that is, the notch V1 on the third rotation wheel be aligned with sluice tool 01; 4.

run counterclockwise till the third turn when code character given on the wheel V is aligned, that is, arrange for the notch l71 on the second rotation wheel to be aligned itch'sluice tool 01; 5. run clockwise till in the second turn when alignment is made with the code character on wheel T, that is, arrange for the notch T1 on the first rotation wheel to be aligned with sluice tool 01; 6. run counterclockwise to the character code appears on the rotation disk lid, that is, arrange for the notch El on the snap ring to be aligned with F3 down the free moving block; 7. shut the rotation disk lid so as to bring the engagement coulisse of the free moving block F2 aligned with snap ring El, that is, F1 engaged with sword lever G2 to original position, in the meantime the single arm lever will be driven by shaft seat spring 16 to kick L3 back to the bottom plate yl of the casing, so that L1 will return to the space Q1 confined in two-section latch; 7. run clockwise in two full turns and half, and the lock will be set open, first turn of single arm lever L1 to carry to hooked plate wedgelike hook P2 by the right side, thereby compelling the wedgelike hook to displace down so that P3 is driven off the coulisse Q1-3 relative to twosection latch. L1 to continue rotation past the pointed tip of the wedgelike hook, cut into coulisse Q1-5, whereby the left side of the coulisse is actuated to bring two-section latch displaced leftwards, in the meantime the hooked plate, depressurized, will kick back.P3 brought into coulisse Qi-2, concurrent with second turn of L1 P2 drops low, Q1-4 actuated to displace further leftwards, P3 caught into Ql-l, in the third turn L1 rotates to two-section latch Q2 corresponding to the left side of fixing shaft 11, abutting upon the interim between R2-3 down the left side of rib plate relative to shaft-laden two-section, thereby compelling R3 to swing rightwards, rotation of the mid arbor 11 serves to displace the upper side R1 of the rib plate leftwards, as R1 is laid in the coulisse of the sluice tool 02 for the spring latch, so the spring latch m, n, o altogether will compel the two springs 05 and 06 to bear leftwards, thereby causing the lock latch head m to recede into casing W-l, that is, ml is brought flush with the outer rim of W1, whereupon the door is set open 8, the key pulled out, the way through the room unobstructed.

III. When it is thought fit to ward off burglary attempts or break in while the user is sleeping indoors, follow the following procedures, as a first step turn the indoor handle from position zl to position z2, z2 being designed eccentrically, whereby spring latch n4 will be brought in close contact with casing w4, and it would then be impossible to break through the door even the party outside has the right and cocrect key intending so to do.

IV. To avoid nuisances in case of temporary outing or if womanfolk or kids find it hard to make out the correct charactery code, it is suggested then to shift the rotation wheel selection button X from W8-0 to W8-1 through W8-3, using just one, two such -wheels, or else fixing all the wheels, and even though the key has to be used, it proves yet easier and more convenient than does a conventional three-section lock notwithstanding, because the key can be inserted regardless of direction, and the switching on or off involves rotation of charactery loop requiring little exertion owing to enough torsion readily available for application, this is also safer by design because of the intergration of the two-section latch with the spring latch head, both made of steel and will withstand reliably clouting, sawing attempts unduly and unlawfully imposed thereupon, the key multiple surfaced and gracefully curvatured, the bead stops spreading extensively and of noticeable undulation irregular enough, in addition, the bead stops set in the keyway will meet angles differing from one point to the next, which will deny and is frustrating enough for a so-called universal key with which the burglary is attempt to break in, models vary and permits little, almost indefinitely negative chances of similarity whatsoever.

V. The 26 components designated A through Z in the accompanying drawings are arrayed in accordance with assemblage sequences, they are all improved design, on the other hand, those designated (01) through (22) are specially prepared products by kind, with the exception of the actual operating procedure and internal functions described for said 26 components as having been disclosed hereinbefore, other characteristic features of the invention include full utilisation of steel balls 01 to increase agility, or the additional provision of sets of spring like 05, 06, 07,08, 09, 10, up and down, or on both sides of key components will serve to help prevent failure, this is another advantage under the present invention.

VI. Although the interior structure of the present invention is sophisticated enough, having been disclosed hereinbefore, the operation procedure is simple enough, as it calls only for the insertion, pullup of the key, actuation, closing of the rotation disk lid, and rotation of charactery loop, the key for insertion can be performed without regard to rim, edge, marginal identifications, and the character code is arranged so that each wheel corresponds to one and only one character mark, simple and easy to remember for the user, this is then a truly highly burglaryproof, versatile, perfect, and much preferred locking device.

DESCRIPTION OF THE DRAWINGS Fig. 1 is a three-diamensional exploded view of the invention; Fig. 2 is a mechanical perspective of the invention; Fig. 3 is another mechanical perspective of the invention; Fig. 4 is an illustration interpreting the relationship between the lock bolt and the two-section latch structured hereunder; and Fig. 5 is an illustration interpreting the interrelation ship between the spring latch, shell casing, and single arm lever structured hereunder.

Claims (1)

1. Concord Lock and Key, comprising: a multiple curvilinear-profiled key, of such pattern as MS and a , a fungus-shaped bolt shaft, a bowl-shaped charactery loop, and a body swivel seat which can consist of a fore part and an aft part if necessary, to facilitate production, for assembly the keyisinserted into the bolting shaft, on the periphery of the bolting shaft are drilled a number of samall holes by taking into account the depth and layout of the keyway, the h/S model being symmetrical by 180 degrees shift, the X model being symmetrical by 120 degrees shift, into the small holes are filled bead beams of such length, long ur short, to come out flush with the outer rim, a coulisse in intervals of 90 degrees is provided alongside the circumferences inside the fungus cap of the bolt shaft, so that a pair is formed 180 degrees apart, altogether there are two pairs confronting each other for the setting of steel balls therein, by the provision of 14 cavities in tight-up seal against said steel balls concentrically in the bottom of the corresponding bowl configuration, the orientation of the charactery loop relative to the bolt shaft can be fixed, in the meantime the 14 cavities provide for inwardly round protrusions because the charactery loop took shape out of punching processing of steel sheets, a notch is drilled in each of the four corners present in a slope up and down the surface in contact with the swivel seat for the lock, of a size relatively larger than half a steel ball set in the perimeter of the respective cavities, into which is fitted a steel ball to account for four steel balls in two sets each subject to impact with the fourteen protrusions, thereby making possible agile rotation, in the midst of the swivel seat for the lock are provided round holes whereof the part in front permit only bolt shaft for insertion for rotation, the part in arrear, slightly larger than the snap ring, accommodates round rim guard of a sword stem for free passage, in and out, above the round hole in the parallel direction is provided a edge keyway to facilitate insertion of a free moving block which can slide to and fro, further above the coulisse for the free moving block is provided a cross rabbet to permit insertion of mid-shaft board, underneath it there may be inserted a butterfly cap lid rabbet, above the lock body further up is provided a semi-curved slope to facilitate operative rotation of the butterfly disk lid, the uppermost point of the disk is provided an opening for pivoted fitting of the butterfly rotation disk.2.Furthermore, up the lock body symmetrical to outstanding ball stops over the perimeter of the bolt shaft and on both the advancing and regression points of the free moving block are drilled smaller holes each accommodating the ball stops and spring, they were secured with sleeving or individual packing means to avoid skipping, finally the round guard of the sword lever is engaged into the first coulisse of the free moving block, the grip filled into channel groove ofthe bolt shaft, the tipfront of the sword inserted into the door frame, the square hole on the hip of a single arm lever to serve to fix that part of the lock integral with it and which shall have been fixed on the outdoor side of the door from a point indoors by means of fixing sheet and screws, that part of the lock indoors is composed of a shell casing, several sets of rotation wheels, including springs, inter-wheel nonrotation washers, plus a shaft mount, a rotation wheel fixing knob, a two-section latch, a hook board including upper and lower springs, a spring bolt which consists of rotation wheel knife, common lock head, spring lock bolt and two fixing screws, including frontal and hinder springs, a bottom casing and an indoor handle .3 For installation the rotation wheel taken in one piece and a washer are grouped, fitted into the shaft mount, then a spring is mounted for bearing and nailed centrally into the spheroid casing ; in addition , the rotation wheel fixing knob is set with both clips inwards, and stuffed forcibly into the beadstringlike coulisse, whereupon the casing sets with the oblong opening facing up and is meant for laying on the table 4: In the hollow shaft mount shall be inserted a spring, the two-section bolt, hook sheet and spring latch superposed in a manner so that the two-section front clamped into the clamping coulisse on either side of the bolt head of the spring bolt, the slat up the tail end of the spring bolt passing a cross rabbet up the tail end of the two-section bolt for fitting into the casing, the hook bolt head for extension beyond the shell casing way from the engaging rabbet on the right side, the slat for the handle at the tail end penetrating off the wall of the rear casing for the fitting of the handle on the indoor side .5 The hip of the single arm lever shall be held so as to permit rotation of the hip across rabbet of the spring bolt, passing the longitudinal groove of the hooked sheet so as to reach the space or rotation of the two-section bolt, the head engaged into the hollow-set shaft mount wherein spring has been loaded previously, screws will be run past the underside of the beadstring groove, into the cross rabbet for the two-section bolt, through the longitudinal groove of the hooked sheet, transverse groove of the spring bolt, to reach the bottom sheet of the casing, all these elements to be penetrated with washers each of suitable thickness so as to maintain spacing bbth longitudinal and horizontal, the interior of the lock body assembled as much will leave only the hip of the single arm lever outstanding from the round hole on the bottom of the casing sheet, this in order to correlate in close association with the sword lever of the outer part of the lock as having been mentioned earlier, all the four corners fixed all right with screw nailing, and this is structural logic of the invention which appears apparently more advantageous by comparison with conventional executions.

6. A lock substantially as herein described with reference to and as shown in the accompanying drawings.