US3138999A - Automatic key cutter - Google Patents

Automatic key cutter Download PDF

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Publication number
US3138999A
US3138999A US182854A US18285462A US3138999A US 3138999 A US3138999 A US 3138999A US 182854 A US182854 A US 182854A US 18285462 A US18285462 A US 18285462A US 3138999 A US3138999 A US 3138999A
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United States
Prior art keywords
key
carriage
shaft
clamp
cutter
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
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US182854A
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English (en)
Inventor
Walter R G Haggstrom
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Independent Lock Co
Original Assignee
Independent Lock Co
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Filing date
Publication date
Application filed by Independent Lock Co filed Critical Independent Lock Co
Priority to US182854A priority Critical patent/US3138999A/en
Priority to GB1384/63A priority patent/GB1029881A/en
Priority to CH66963A priority patent/CH425405A/de
Application granted granted Critical
Publication of US3138999A publication Critical patent/US3138999A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23C—MILLING
    • B23C3/00—Milling particular work; Special milling operations; Machines therefor
    • B23C3/28—Grooving workpieces
    • B23C3/35—Milling grooves in keys
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q3/00—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q2703/00—Work clamping
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T409/00—Gear cutting, milling, or planing
    • Y10T409/30—Milling
    • Y10T409/30084—Milling with regulation of operation by templet, card, or other replaceable information supply
    • Y10T409/300952—Milling with regulation of operation by templet, card, or other replaceable information supply to cut lock key
    • Y10T409/301064—Complete cycle

Definitions

  • this invention relates to a key cutting device wherein a tumbler operating pattern formed'on the blade portion of a selected key may be duplicated or reproduced on a selected key blank.
  • this invention relates to a key duplicator which is substantially automatic and fool-proof in operation whereby the same may be successfully operated by a person having no prior experience in the handling of key cutters.
  • the simplicity of the operation of the machine is such as to. render possible its use in a key vending device or as an element in the merchandising of key blanks whereby selection of, or delivery of a blank to be cut, as from or by a key blank vending ma chine or the like and the introduction of said blank manually or automatically into the key cutting machine clamp, together with the key to be duplicated, will auto matically result in cutting a perfect copy.
  • this invention relates to an automatic key cutter having a novel operating assembly whereby the steps heretofore necessarily manually effected are effected automatically.
  • this invention relates in one aspect to novel key blank and pattern key clamp means'for receiving and maintaining the key and key blank during the cutting operation.
  • a further object of this invention is to provide a novel key cutting device poweredv by a motor mounted in such manner that the weight thereof augments the key milling action of the cutter element, and which motor is additionally utilized to drive at slow speeds a shaft journalled on the frame of the cutterdevice, to
  • Still a further object of this invention is the provision of a key cutting device having clamp means which include key seating elements and key gripping elements, the first mentioned elements being effective to secure accurate initial positioning of the key and key blank, and the second mentioned elements being effective to supplant the holding influence of the first mentioned elements during the actual cutting of the key.
  • a further object of this invention is to provide a clamp mechanism for a key cutter wherein a key blank and a patterned key will be securely held during the cutting operation, notwithstanding the key and key blank are of varyin g thickness.
  • Still a further object of this invention is to provide in a key cutting device clamp means for the key blank and pattern key which assure that the pattern key and key blank are accurately aligned in the clamps before initiation of the cutting cycle.
  • a further and principal object of this invention is the provision of a key cutter which may be used in conjunction with or as part of a key cutting device by persons unskilled in the art of locksmithing and unaccustomed to the operation of a key cutting machine and the requirements for accurate reproduction of cut keys.
  • FIGURE 1 is a perspective view of a key cutting device in accordance with the invention with portions thereof spaced from their normal operative positions for clarity of illustration. 7
  • FIGURE 2 is a vertical sectional view of the key cutter.
  • FIGURE 3 is a vertical section taken on the line 3-3 of FIGURE 2. 7
  • FIGURE 4 is a horizontal section taken on the line 44 of FIGURE 2 with the key cutter in the initial or loading position thereof.
  • FIGURE 5 is a section in accordance with FIGURE 4 taken at an advanced stage of operation of the cutter device.
  • FIGURE 6 is a magnified perspective view of the key blank clamp member and associated mechanism
  • FIGURE 7 is a vertical section-taken on the line 7--7 of FIGURE 6.
  • FIGURE 8 is a fragmentary plan view of an embodiment of the invention.
  • FIGURE 9 is a fragmentary perspective view of hold down operating mechanism in accordance with an embodiment of the invention.
  • FIGURE 10 is a front elevational view of the embodiment of FIGURE 9;
  • FIGURE 11 is a magnified section taken on line 11-11 of FIGURE 9.
  • the device generally includes a base or frame having track or guide portions thereon and having parallel abreast clamping receptacles for a key and key blank.
  • a carriage is shiftably mounted on the track or guide portions of the frame to permit linear'movement of the carriage toward and away from the key seats or receptacles.
  • a key duplicator head having the usual tracer and cutter elements is mounted to the carriage for pivotal movement on an axis normal to the direction of movement of the carriage.
  • the key cutter is driven. by a motor suitably mounted on the duplicator head in such position that the weight of said motor aids in the key cutting operation by urging the cutter against the key blank.
  • the motor drive shaft is linked by extensible and flexible shaft elements to a speed reducer member fixed to the frame and driving a cross shaft having its axis of rotation aligned normal to the direction of the track or guide means of the frame.
  • the cross shaft which rotates at a very slow speed during the operating cycle of the key cutter, carries a plurality of cam members.
  • the carriage includes a follower portion, the entire carriage being spring biased whereby said follower portion is engaged against one such cam member, the coaction of such cam and follower serving to shift the carriage toward and away from the key and key blank receptacles.
  • the key receptacles are each provided with a clamp jaw and a hold-down lever serving respectively to apply lateral and downward pressure to the key shank portions. Initially, the key and key blank when inserted into receptacles, are urged into proper position therein by the yielding pressure of the hold-down and clamp jaw elements.
  • the hold-downand clamp jaw elements in addition are provided with follower portions which coact with other cams carried by the cross shaft so that'on initiation of a cutting cycle the hold-down levers are pivoted clear of the key shank portion to permit cutting and tracing of the pattern on such portion, the clamp jaw members being simultaneously locked into gripping position of the key whereby the yieldable pressure on the shank by the jaw is supplanted by a considerable locking pressure to maintain the key in position during the cutting cycle.
  • the holddown and clamp jaw members are released by their respective follower means to their initial position whereat they are yieldably biased against the shank portions of the key and key blank.
  • the key cutter device is provided with electrical cycle initiating means, as described and claimed in my copending application aforesaid whereby the cutting cycle is begun automatically responsive to proper insertion of the key and key blank into the appropriate receptacles.
  • I provide a frame member including a base portion 11 to which are fixedly mounted the seats or receptacles 12, 13 for the key blank and pattern key respectively.
  • the frame 10 may be secured to the top of a work bench, or the like.
  • the frame may be enclosed within an appropriate container or cabinet having formed therein access slots registering with the key slots 14 and 15 of the key blank and pattern key seats 12 and 13, respectively.
  • a pair of track or guide elements 17, 18 are fixed to base 11 to lie parallel with each other, with the base, and with keyway slots 14 and 15.
  • the guide element 17 comprises a fiat upwardly directed wall and the element 18 comprises a rod-like generally cylindrical member, it being understood, however, that various other forms of track or guide means may be employed without departing from the spirit of the invention
  • a carriage member is linearly slidably mounted on the guides 17 and 18, the said carriage comprising a generally 'U-shaped assembly including parallel opposed side walls 31 and 32;
  • yoke members 33 recessed at the underside thereof to provide a complemental sliding fit on the guide rod 18.
  • the carriage 30 is provided in addition with depending foot portions 35 in laterally spaced relation to the yokes 33 the portions 35 registering with and riding on the guide elements 17. From the foregoing it will be seen that the carriage 30 is permitted a range of sliding movement forwardly and rearwardly along the guide means 17 and 18, a recessed portion 34 of the yokes 33 acting then to prevent lateral movement of the carriage 30 with respect to the guide members aforesaid.
  • the side walls 31, 32 of the carriage 30 are provided in addition with opposed trunnion portions 37, 38 respectively, which portions extend toward each other and are coaxially aligned.
  • Fixed to the carriage 30 and extending rearwardly therefrom is a carriage follower bar 39 having fixed to the rearmost end thereof a carriage follower shoe 40 for purposes hereinafter described.
  • a duplicator head is pivotally mounted to the carriage 30 on trunnions 37, 38 fixed to the walls 31, 32 of said carriage.
  • Head 50 comprises a rigid support shell 51 of a generally box-like conformation, the bottom of said shell 51 being open.
  • the side walls 52, 53 of the shell 51 are provided with bearing notches 54 and 55 respectively which, in the assembled position of the head 50, rest respectively on trunnions 37 and 38 to provide a pivotal connection between the head 50 and the carriage 30 previously described.
  • the motor M is bolted or otherwise secured to the underside of the shell 51, the drive shaft D of said motor extending through the rear wall 56 of the shell 51.
  • the motor M is mounted in such a manner as to align the center of gravity thereof forwardly of the notches 54, 55 whereby, when the notches 54, 55 are seated on trunnions 37, 38 the weight of the motor will tend to pivot the head 50 forwardly so that the forward wall 57 thereof is urged downwardly under the influence of said motor.
  • the cutter drive shaft 58 is journalled in the forward and rearward walls 57, 56 of the shell 51, a cutting or milling wheel 59 being mounted on the portion of shaft 58 extending forwardly on the wall 57.
  • a pully 60 is fixed to the shaft 58 at a point rearwardly of the rear wall 56 of the shell 51, said pulley 60 being linked to a pulley 61 fixed to drive shaft D of the motor M by a belt 62.
  • a pattern tracer stylus 63 is adjustably secured to the front wall 57 of the shell 51 by adjustable clamp member 64 permitting a vertical adjustment of the stylus 63 with respect to said clamp. Also, in the normal operation the clamp 64 is adjusted so that the apex 65 extends beneath the carriage 50 exactly the same distance as the lowermost point of the periphery 66 of the wheel 59 extends below said carriage.
  • a pair of tension springs 68, 69 are secured to the side walls 52, 53 of the head 50 at their upper ends and that their lower ends are fixed to the frame base 11 through eyes 11', 11 whereby the downward pivoting force exerted on the forward end 57 of the head 50 by the weight of motor M is implemented.
  • Downward pivotal movement of the head 50 toward the carriage 30 is limited by the provision of a depending leg member 67 having fixed thereto a roller wheel 67a engaging against the horizontally disposed body portion of said carriage in the inoperative position of the device (FIG. 2).
  • a speed reducer gear assembly 70 Fixed to the base 11 of frame 18 is a speed reducer gear assembly 70 having an in-put drive element 71 which when rotated, rotates in turn a square cross shaft member 72 having bearing portions journalled in the speed reducer assembly 70.
  • the shaft 72 lics parallel to the base 11 and normal to the guide track members 17 and 18.
  • the speed reducer mechanism 78 is of conventional design and need not be described further except to indicate that the gear ratio of the illustrated embodiment is calculated to produce one revolution of the shaft 72 for each 5800 revolutions of the in-put member 71.
  • the 5800 to 1 ratio of the gear assembly aforesaid is optional and it will be understood by those skilled in the art that such ratio should be varied dependent upon the horsepower rating and speed of revolution of the motor M selected for use in the cutter device.
  • the head 50 carrying motor M will move both linearly and pivotally with respect to the speed reducer member 70. Accordingly, in order to drive the in-put 71 of said speed reducer a driving connection must be made between the shaft D of the motor M and the in-put 71 of the speed reducer, which connection is both flexible and extensible.
  • the speed reducerd in-put 71 is provided with an axially extending channel 74 having eccentric drive recesses '73, 73.
  • a flexible drive shaft element 75 Fastened to the drive shaft D of motor M behind pulley 61 is a flexible drive shaft element 75 which comprises a coil spring 76 having fixed to the rearward end thereof a spline shaft 77 with laterally extending eccentric lobes 78, 78.
  • the spline shaft 77 is slidable within the channel 74 of the speed reducer in-put 71, the lobes '78, 78 of said spline shaft forming a driving connection with the eccentric recess portions 73, 73 of channel 74.
  • the vise 12 includes as a portion of the key Way slot 14 a lower or horizontally disposed wall 81 and a fixedside wall portion 81 normal to the wall 819.
  • a clamp jaw member 82 is pivotally mounted on shaft 83 to be shiftable toward and away from the wall 31 a compression coil spring 84 being interposed between the leg portion 35 of the jaw 82 and a portion of the vise 12 to urge clamping face 86 of said jaw resiliently against the wall 81 when no key is positioned in the clamp.
  • the leg portion 85 of the clamp jaw 82 is provided with a later-ally extending hardened steel ball 87 fixed within a recess 83 formed in said leg.
  • the upright portion 89 of the vise 12 is likewise provided with a hardened ball 919 in opposed relation to the ball 87 and similarly seated within a recess 91 formed in the leg 89.
  • a hold-down lever 100 is provided for seating the base of an inserted'key blank against the lower wall portion 811 of the key way slot 14.
  • the lever 11% fixed to a shaft 161 is horizontally disposed and rotatably journalled in the bearing aperture 1112 of the vise 12, said shaft at its rearward end being journalled in a vertical bracket 1113 fixed to the base 11 of the frame.
  • a torsion spring 1114 is secured at one end 105 to the bracket 103 the other end 106 of said spring being fixed to a boss 1117 non-rotatably mounted to the shaft 1111.
  • the spring 1134 is mounted under tension and thus normally serves to urge the shaft 101 counter-clockwise (as. best seen in FIGS.
  • the clamp face 36 and/the side wall portion 81 are rocessed or hollowed at 86a and 81:: respectively to provide a better gripping action particularly where a slightly bent or nickel key or key blank is encountered.
  • the jaw 86, side wall portion 81 and bottom wall portion 80 are provided with chamfered or beveled leading portions 3%, 81b, 86b to facilitate insertion of the key and key lank into the key way slot 14.
  • the jaw $2 is yieldably urged by spring 84 against the sidewall 81 of the key blank slot 14.
  • the pressure exerted by the spring 34 is necessarily relatively light in order to permit ready insertion of a key blank into the slot 14 and accordingly such pressure will not be sufficient to maintain the key blank against movement withinthe slot during the cutting operation.
  • a locking wedge 116' interposed between bracket 89 of the key receptacle 12 and the leg .8
  • clamp jaw member 82 The wedge 110 is disposed between the ball members 913 and 87 so that when said wedge is shifted rearwardly in a manner hereinafter described, the jaw 86 is forced toward the wall 81 tightly clamping the key within the key way slot 14.
  • Locking wedge 11%) is secured at its rearward end to a clamp follower rod 111 horizontally slidably supported by brackets 112 and 113 extending upwardly from base 11.
  • a relatively heavy compression spring 114 is interposed between the rear face of bracket 112 and a collar 115 fixed to the rod 111.
  • a clamp follower shoe 116 is secured to the rearward end of the rod 111. It will be understood from the description of the above that the compression spring 114 will tend to shift the rod 111 and its associated locking wedge 11h rearwardly or to the jaw-locking position thereof.
  • the wedge is normally maintained in a forward or clamp jaw releasing position by the engagement of a follower shoe 116 with the periphery of clamp jaw operating cam 117 which is fixed to the cross shaft 72 to rotate therewith.
  • the cam 117 has a peripheral portion eccentric with respect to the axis of rotation of shaft 72 and including a gradually increasing rise portion extending throughout substantially the entire periphery of said cam and terminating at a sector 11% which comprises a peripheral portion of said cam spaced furthest from the axis of rotation of shaft 72.
  • the cam 11 7 is aligned with the axis of shaft 111 and when the high sector 118 of the cam is aligned with the follower shoe 116 the rod 111 and its associated wedge 11%? will have been shifted to the forwardmost or clamp jaw releasing position thereof.
  • the cam 117 is provided in trailing position of sector 11% with a sharp drop or ledge portion 119. From the above it will be readily recognized as the shaft 72 rotates, the sector 118 will be shifted from registering position with the shoe 116 and the shoe will be entirely released from the periphery of said cam when the ledge or cut-out sector 119 is in registry with said shoe 116.
  • a drum cam 122 is fixed to the cross shaft 72 to rotate therewith, cam 122 being provided with lateral cam surfaces adapted to engage the pin 121 and by the angular camming movement imparted by the cam to the pin to rotate shaft 181 against the action spring 1114 thereby causing the hold-down lever to be cleared from above the key retaining slots and permitting operative engagement with the key and key blank of the cutter and duplicating tracer.
  • a gradual rise surface 123 is formed on the cam 122 and as the shaft 72 rotates counter-clockwise, as seen in FIG. 1, the surface 123 engages behind pin 121 shifting the latter against the pressure of spring 164 until said pin lies against the generally flat inner peripheral portion 124 of the cam 122.
  • the carriage 30 is urged rearwardly or toward its starting position by tension springs 130, 130, one end of each of such springs being secured to said carriage, the other end of the springs being fixed to the base 11.
  • An eccentric drive cam 131 is fixed to the cross shaft 72 in registry with the follower shoe 40 of the carriage operating bar 39. Springs 130, 130' are effective to draw the carriage rearwardly so that the shoe 40 is constantly engaged with the periphery of the eccentric cam 131.
  • Cam 131 includes a sector 133 which is disposed a radial distance from the axis shaft 72 considerably less than the radial spacing of the sector 134 of said cam from said shaft.
  • the operator inserts the blade or shank portion of the pattern or cut key into the key way slot in the clamp member 13 with the cut or bitted portion upwardly directed.
  • the key blank is inserted into the key way slot 14 with a corresponding portion of the shank upwardly directed.
  • the shoulder portion of the key and blank adjacent the blade is thrust inwardly until said shoulder portions lie against the forwardmost portions of holddown levers 100. Insertion of the key and blank into the key ways is facilitated by the bevel portions 8%, 81b, 86b which guide the keys to the desired seated position in the clamps.
  • the duplicator head 50 As thestylus 63 scans 8 the bitted portion of the cut key the duplicator head 50 is raised and lowered against the weight of motor M and the tension of springs 68, 69, the miller or cutter 59 during this movement etching or filing into the key blank maintained in clamp 14 a bitting or pattern which thus corresponds with the pattern or bitting of the cut key. After completing its forward stroke the carriage is gradually retracted by action of springs 130 the duplicator head 50 in the course of such retractive movement again rising and falling in accordance with the pattern formed on the cut key held within slot 15.
  • FIGURE 8 there is shown an embodiment of the invention having novel cycle initiating mechanism.
  • like parts have been given like reference numerals.
  • the key hold down lever normally extends forwardly of the key and blank supports 12 and 13 in the path of the shoulder KS of the key and key blank.
  • the shaft 101 which carries the lever 100 is permitted clearance for axial as well as rotary movement.
  • Spring 104 in addition to the torsional force previously described for maintaining follower pin 121 against cam 122, is compressed between collar 107 and bracket 103, thereby normally urging the shaft and lever to the forward limiting position thereof.
  • a microwitch MS is disposed closely adjacent the rearmost face of follower disk carried by shaft 101.
  • the shoulder KS engages the forward face of the downwardly positioned hold down lever 100 and urges the latter axially inwardly or rearwardly, thus to carry the shaft 101 and disk 120 rearwardly and trip the microswitch MS.
  • the micro-switches of the key and key blank are wired in series to assure that the cycle cannot be started unless both the micro-switches are closed, signifying proper insertion of both the key and key blank.
  • a cycle starting device of the type illustrated in FIGURE 8 it will be necessary to utilize the circuit through the micro-switches to activate a hold circuit, which circuit will be effective to energize the motor throughout the operating cycle. This is necessary because, when the hold down levers are pivoted clear of the key shoulder, the spring 104 will urge the shaft 101 and lever 100 forwardly, opening the microswitch circuit.
  • FIGURES 9 to 11 there is illustrated an embodiment in which a single cam 122 is utilized for operating both hold down levers 100.
  • cam 122 is mounted on the righthandmost side of shaft 72.
  • Shaft 101 is journalled at its forward end in bearing aperture 102 of said shaft having its rearmost end journalled in bracket 103 fixed to the base.
  • a bell crank arm 300 having a roller follower portion 301 extends rearwardly from the rearmost end of the shaft, said roller portion being maintained against the lateral face of cam 122 by a torsion spring 104 having one end fixed in collar 107 secured to the shaft and having its other end fixed to bracket 103, as in the prior embodiments.
  • Hold down lever 100 is fixed to the shaft 101 and is normally urged into covering relation of the key slot in-vise 13.
  • a quadrant 302 isfixed to shaft 101, said quadrant having an aperture 303 in which inturned end 304 of drive rod 305 is pivotally secured.
  • Hold down 100a of a key vise 12 is fixed to stub shaft 101a rotatably mounted in said vise. is fixed to the stub shaft 101a, the quadrant 306 including an arcuate lost motion slot 307 within which the end 303 of drive rod 305 is movably secured.
  • the end 3&8 lies adjacent the leading (lefthandmost, as viewed in FIG- URE 10) and 309 of slot 307 when the hold down 100a is in its lowermost position adjacent the top of vise 12.
  • a butterfly spring 310 has one end 311 hooked about quadrant 306 (FIGURE 11), the opposite end of said spring being fixed to vise 12 to impart a counterclockwise torque to the hold down lever ltltla, normally to maintain the same in the downward (counterclockwise rotated) position against the top of vise 12 adjacentthe keyway 14- thereof.
  • cams 117, 122 and 131 are assured by the provision of the squared cross shaft 72 since, through the use of such shaft together with cams having complemental squared drive apertures keyed to the shaft, rotary disorientation of the cams with respect to each other or the shaft is prohibited.
  • a key cutter device comprising a frame having a horizontally disposed track portion, a pair of key clamp means fixed to said frame adjacent a front end thereof, said clamp means being positioned to hold a pair of keys in side by side position parallel with said track portion, hold down means pivotally mounted adjacent each said clamp means and yieldably biased into covering position of said clampmeans, a carriage slidablymounted on said frame for linear movement forwardly and rearwardly along said track, spaced bearing means on said carriage, a cutter and tracer head assembly having spaced trunnion means pivotally seated in said bearing means of said carriage, said trunnion means being aligned normal to the direction of movement of said carriage on said track, a motor mounted on said head, a cutter wheel on said head operatively associated with said motor, a pattern tracer carried on said head, drive means including a power take off mounted on said frame and operatively associated with said motor, a cross shaft extending from said power take off and disposed normal to said track, a plurality of cam members keye
  • a device in accordance with claim 1 including spring means operatively associated with said frame and said carriage and urging the follower of said carriage into contact with a cam carried on said cross shaft.
  • a key cutter comprising a frame, a pair of key receptacles on said frame positioned to hold a key and a key blank in parallel, side by side relation, a shiftable jaw portion on each said receptacle, a carriage slidably mounted on said frame for reciprocal movement in a direction parallel with the axis of said keys, a cutter and tracer head pivotally mounted on said carriage and having spaced cutting and tracing means depending therefrom in potential direct contact with said blank and key, respectively, speed reducer means fixedly mounted with respect to said frame, flexible and extensible drive shaft means connected between said motor and an input shaft of said speed reducer, an output shaft driven by said speed reducer means and disposed normal to the axes of said key and key blank, spaced eccentric cam means fixed to said cross shaft to rotate therewith, spaced follower rods reciprocable in said frame, spring means urging said follower rods rearwardly against said cam means, wedge members fixed to the ends of said rods spaced from said cam means, one side of each said wedge means bearing
  • a key cutter comprising a frame, spaced seat portions fixed to said frame and positioned to hold a key and key blank in parallel side by side position, a shiftable clamp jaw portion on each said seat portion shiftable toward and away from clamping position thereon, wedge means disposed adjacent each said jaw portion and shiftable between rearward clamp jaw actuating and forward clamp jaw releasing positions, a cross shaft rotatable on an axis normal to the axis of said key and blank disposed rearwardly of said seat portions, spaced cam means carried by said shaft, follower elements fixed to said wedge means, spring means urging said follower elements rearwardly into engagement with the periphery of said cam means, said cam means each including a gradually inclined spring compression sector including successive portions spaced progressively further from the axis of rotation of said cross shaft and a follower release sector in trailing position with respect to said compression sector, the portions of said release sector being spaced closer to said axis of said cross shaft, the transition from said compression to said release sectors being abrupt whereby, when said release sector is rotated into
  • a key cutting device having a frame, a key seat on said frame and including fixed bottom and side wall portions, a clamp jaw shiftable toward and away from said side wall portion and yieldingly biased toward said wall, locking means adjacent said jaw and linearly reciprocable between jaw clamping and jaw releasing positions, a fol lower portion connected to said locking means, a cam mounted for rotation on an axis normal to the direction of movement of said locking means, said cam having a surface defining a gradual rise portion and an abrupt fall portion in trailing position with respect to said rise portion, and spring means interposed between said frame and said follower portion and biasing the latter toward said clamping position and against the surface of said cam.
  • a key cutter including a frame having a pair of key receptacles, a cutter and tracer carriage on said frame and powerized means for reciprocating said carriage on said frame toward and away from said receptacles, key hold down means for seating a key and key blank in said receptacles comprising first and second key hold down levers, each pivotally mounted to one of said receptacles, cam means operatively associated with said powerized means, follower means operatively connected to said first hold down lever, spring means urging said follower means against said cam whereby said first hold down lever is yieldably maintained in operative position adjacent one said receptacle, second spring means urging said second hold down lever into operative position adjacent said other receptacle and connector means operatively associating said first and second hold down levers adapted to shift said second hold down lever to inoperative position clear of said other receptacle when said first hold down lever is shifted clear of said one receptacle by the cooperative action of said cam and said follower,

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  • Mechanical Engineering (AREA)
  • Milling Processes (AREA)
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US182854A 1962-03-27 1962-03-27 Automatic key cutter Expired - Lifetime US3138999A (en)

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Application Number Priority Date Filing Date Title
US182854A US3138999A (en) 1962-03-27 1962-03-27 Automatic key cutter
GB1384/63A GB1029881A (en) 1962-03-27 1963-01-11 Improvements in or relating to key cutters
CH66963A CH425405A (de) 1962-03-27 1963-01-21 Schlüsselkopiermaschine

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US182854A US3138999A (en) 1962-03-27 1962-03-27 Automatic key cutter

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US3138999A true US3138999A (en) 1964-06-30

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US182854A Expired - Lifetime US3138999A (en) 1962-03-27 1962-03-27 Automatic key cutter

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GB (1) GB1029881A (de)

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3358561A (en) * 1965-10-21 1967-12-19 Coin A Key Inc Automatic pattern cutting and vending machine
US3675536A (en) * 1970-11-27 1972-07-11 Cole National Corp Key cutting machine
US3834688A (en) * 1972-11-20 1974-09-10 Cole Nat Corp Key vise structure
US5538374A (en) * 1994-08-12 1996-07-23 American Consumer Products, Inc. Key duplicating machine and method
US5951218A (en) * 1998-02-20 1999-09-14 Wu; Kuo-Shen Key duplicating machine
EP2022999A1 (de) 2007-08-10 2009-02-11 AP Racing Limited Sattelkörper für eine Scheibenbremse und Sattel für eine Scheibenbremse mit einem solchen Körper
US9514385B2 (en) 2009-05-01 2016-12-06 Hy-Ko Products Company Key blank identification system with groove scanning
US9582734B2 (en) 2009-05-01 2017-02-28 Hy-Ko Products Company Key blank identification system with bitting analysis
US9656332B2 (en) 2006-01-23 2017-05-23 Hy-Ko Products Company Key duplication machine
US9682432B2 (en) 2006-01-23 2017-06-20 Hy-Ko Products Company Key duplication machine
US9818041B2 (en) 2015-08-03 2017-11-14 Hy-Ko Products Company High security key scanning system
US20190015907A1 (en) * 2017-07-11 2019-01-17 Shenzhen Xhorse Electronics Co., Ltd Reset mechanism
US10265783B2 (en) * 2013-10-16 2019-04-23 Kaba Ilco Corp. Universal clamping assembly for key duplicating machine
US10737336B2 (en) 2006-11-28 2020-08-11 The Hillman Group, Inc. Self service key duplicating machine with automatic key model identification system

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US2645978A (en) * 1949-04-19 1953-07-21 Sejarto Lester Key duplicating machine

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US2645978A (en) * 1949-04-19 1953-07-21 Sejarto Lester Key duplicating machine

Cited By (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3358561A (en) * 1965-10-21 1967-12-19 Coin A Key Inc Automatic pattern cutting and vending machine
US3675536A (en) * 1970-11-27 1972-07-11 Cole National Corp Key cutting machine
US3834688A (en) * 1972-11-20 1974-09-10 Cole Nat Corp Key vise structure
US5538374A (en) * 1994-08-12 1996-07-23 American Consumer Products, Inc. Key duplicating machine and method
US5951218A (en) * 1998-02-20 1999-09-14 Wu; Kuo-Shen Key duplicating machine
US9925601B2 (en) 2006-01-23 2018-03-27 Hy-Ko Products Company Key duplication machine
US10421133B2 (en) 2006-01-23 2019-09-24 Hy-Ko Products Company Key duplication machine
US9656332B2 (en) 2006-01-23 2017-05-23 Hy-Ko Products Company Key duplication machine
US9682432B2 (en) 2006-01-23 2017-06-20 Hy-Ko Products Company Key duplication machine
US9687920B2 (en) 2006-01-23 2017-06-27 Hy-Ko Products Company Key duplication machine
US9815126B2 (en) 2006-01-23 2017-11-14 Hy-Ko Products Company Key duplication machine
US10737336B2 (en) 2006-11-28 2020-08-11 The Hillman Group, Inc. Self service key duplicating machine with automatic key model identification system
EP2022999A1 (de) 2007-08-10 2009-02-11 AP Racing Limited Sattelkörper für eine Scheibenbremse und Sattel für eine Scheibenbremse mit einem solchen Körper
US9934448B2 (en) 2009-05-01 2018-04-03 Hy-Ko Products Company Key blank identification system with groove scanning
US9582734B2 (en) 2009-05-01 2017-02-28 Hy-Ko Products Company Key blank identification system with bitting analysis
US9514385B2 (en) 2009-05-01 2016-12-06 Hy-Ko Products Company Key blank identification system with groove scanning
US11227181B2 (en) 2009-05-01 2022-01-18 Hy-Ko Products Company Llc Key blank identification system with groove scanning
US10265783B2 (en) * 2013-10-16 2019-04-23 Kaba Ilco Corp. Universal clamping assembly for key duplicating machine
US9818041B2 (en) 2015-08-03 2017-11-14 Hy-Ko Products Company High security key scanning system
US10956772B2 (en) 2015-08-03 2021-03-23 Hy-Ko Products Company High security key scanning system
US11842554B2 (en) 2015-08-03 2023-12-12 Hy-Ko Products Company Llc High security key scanning system
US20190015907A1 (en) * 2017-07-11 2019-01-17 Shenzhen Xhorse Electronics Co., Ltd Reset mechanism
US10864583B2 (en) * 2017-07-11 2020-12-15 Shenzhen Xhorse Electronics Co., Ltd Reset mechanism

Also Published As

Publication number Publication date
CH425405A (de) 1966-11-30
GB1029881A (en) 1966-05-18

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