US3791240A - Method of reproducing flat keys and tools used to this end - Google Patents
Method of reproducing flat keys and tools used to this end Download PDFInfo
- Publication number
- US3791240A US3791240A US00123736A US3791240DA US3791240A US 3791240 A US3791240 A US 3791240A US 00123736 A US00123736 A US 00123736A US 3791240D A US3791240D A US 3791240DA US 3791240 A US3791240 A US 3791240A
- Authority
- US
- United States
- Prior art keywords
- gauge
- blank
- vice
- gauges
- reproducing
- 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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Classifications
-
- 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
- B23C3/355—Holders for the template keys
-
- 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
-
- 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
- Y10T409/30112—Process
Definitions
- ABSTRACT This invention relates to a method of reproducing flat keys according to their number and code, and tools used to this end, wherein a number of gauges equal to the number of the notches of the key are successively reproduced, each of these gauges having a single notch whose shape, depth and relative distance correspond to those of the key to be reproduced.
- Flat keys are those obtained by cutting out from a strip of metal and which are used in many locks, particularly in those used in almost all motor vehicles.
- the part intended for penetration into the lock generally comprises one or more longitudinal grooves and a plurality of notches on one side of the flat part and sometimes on both sides.
- These notches are more or less deep and are made at determined distances both from the beginning of the key and between themselves.
- a number of methods are known for copying the keys according to an existing model and starting from a blank, i.e., from a blank key having the suitable form but without the notches which, according to their shape and depth, permit the key to operate the lock.
- each key designates each key by a number. This number corresponds to a number X of notches generally separated by a determined distance which is identical for all the series, but having a depth which is different at least for one notch.
- the lock manufacturer In order to reproduce the keys according to their number, the lock manufacturer establishes a code corresponding to a special machine which uses a cutting tool (milling tool) whose form is identical to the notch of the key. Consequently, in order to reproduce the key according to the number, in addition to the code which reproduces the number into technical data, a machine is presently required which is especially designed by the key manufacturer, and which uses cutting tools (milling tools) having the'form of the notch.v
- the present invention provides a method of reproducing keys according to their number, using a conventional machine for reproducing keys by the pantograph process. All professionals are equipped with this machine.
- the present invention provides, for reproducing a key according to its number, a set of gauges, a code indicating, according to the number, which are the gauges to be used and a conventional reproducing machine.
- FIG. 2 is a diagram of a machine for reproducing keys by the pantograph system.
- 1 represents the milling cutter having an angle smaller than the smallest of the angles to be reproduced
- 2 represents the sensing member
- 3 the vice or support for the master key or the gauge 4
- 4 the gauge
- 5 the support of the blank
- 6 the blank
- 7 the outer face of the gauge-holding vice
- 8 the carriage.
- FIG. 3 is a section through a gauge-holding vice (3 or 5 of FIG. 2) of the reproducing machine, where 9 represents the stop inside the vice.
- the notch 4a of the gauge (FIG. ll) has the same shape, depth and is located at exactly the same distance from the reference face 4b, as that of the key to be reproduced. Obviously, there will be as many gauges as there are different shapes, depths and distances from the reference face 4b, as well as their possible combinations.
- the present invention for reproducing a key according to its number, it should firstly be sought in the pre-established code whichare the gauges which correspond to the number of the key. If the key has, for example, five notches, five gauges will also be found.
- one of the gauges is placed, in any order, in the vice 3 (FIG. 2) by pressing the reference face 40 (FIG. 1) of said gauge against the face of the vice 7 (FIG. 2) whilst simultaneously ensuring that the reference face 4d (FIG. 1) is indeed against the reference face 9 of the vice (FIG. 3).
- the carriage (FIG. 2) is moved to cause the gauge 4 to bear against the sensing member 2 (FIG. 2) ensuring that the outer face of the sensing member bears against the reference face 412 of the gauge (FIG. 1).
- the blank 6 (FIG. 2) is placed in the vice 5 (FIG.
- the carriage is disengaged from the milling cutter and is taken to the rest position.
- the gauge 4 (FIG. 2) is replaced by any other gauge of the set chosen, care being taken to place it in the same position, i.e., face 4d of the gauge (FIG. 1) against the reference face 9 of the vice teristics and a code which translates the number of the key, not into technical data but into sets of gauges.
- FIG. 1 is a view of a gauge, generally made of steel, where I represents the notch and 2, 3 and 4 reference faces.
Abstract
This invention relates to a method of reproducing flat keys according to their number and code, and tools used to this end, wherein a number of gauges equal to the number of the notches of the key are successively reproduced, each of these gauges having a single notch whose shape, depth and relative distance correspond to those of the key to be reproduced.
Description
United States Patent n 1 Meoni Feb. 12, 1974 METHOD OF REPRODUCING FLAT KEYS AND TOOLS USED TO THIS END [75] Inventor:
[73] Assignee: Cemsa, Montreuil-sous-Bois, France [22] Filed: Mar. 12, 1971 [21] Appl. No.: 123,736
Angelo Meoni, Paris, France [30] Foreign Application Priority Data Mar. 19, 1970 France 70.09833 [52] US. Cl...' 76/110, 90/13.05 [51] Int. Cl. B230 3/35 [58] Field of Search 90/13.05; 76/110; 70/411 [56] I References Cited UNITED STATES PATENTS 1,948,260 2/1934 Fowler 90/ 13.05
FOREIGN PATENTS OR APPLICATIONS 1,209,847 7/1966 Germany 90/1305 I/1956 Cole ..90/13.05 12/1961 Raymond ..90/13.05
Primary Examiner-Francis S. Husar [5 7] ABSTRACT This invention relates to a method of reproducing flat keys according to their number and code, and tools used to this end, wherein a number of gauges equal to the number of the notches of the key are successively reproduced, each of these gauges having a single notch whose shape, depth and relative distance correspond to those of the key to be reproduced.
1 Claim, 3 Drawing Figures METHOD OF REPRODUCING FLAT KEYS AND TOOLS USED TO THIS END The invention relates to a method of reproducing flat keys according to their number and code, and to tools used to this end.
Flat keys are those obtained by cutting out from a strip of metal and which are used in many locks, particularly in those used in almost all motor vehicles.
In this type of key, the part intended for penetration into the lock generally comprises one or more longitudinal grooves and a plurality of notches on one side of the flat part and sometimes on both sides.
These notches are more or less deep and are made at determined distances both from the beginning of the key and between themselves.
A number of methods are known for copying the keys according to an existing model and starting from a blank, i.e., from a blank key having the suitable form but without the notches which, according to their shape and depth, permit the key to operate the lock.
Although it is relatively easy to copy a key, considerable difficulties are met with at present when a key has to be reproduced according to its number.
Even the keys of a determined series are theoretically different from each other. In order to differentiate them, the manufactures designate each key by a number. This number corresponds to a number X of notches generally separated by a determined distance which is identical for all the series, but having a depth which is different at least for one notch.
If it is considered that the absence of a notch corresponds to a zero notch depth and that nothing stops the same depth being repeated several times on the same key, the number of combinations is so great that practically all keys can be considered to be different from one another.
In order to reproduce the keys according to their number, the lock manufacturer establishes a code corresponding to a special machine which uses a cutting tool (milling tool) whose form is identical to the notch of the key. Consequently, in order to reproduce the key according to the number, in addition to the code which reproduces the number into technical data, a machine is presently required which is especially designed by the key manufacturer, and which uses cutting tools (milling tools) having the'form of the notch.v
The present invention provides a method of reproducing keys according to their number, using a conventional machine for reproducing keys by the pantograph process. All professionals are equipped with this machine.
The present invention provides, for reproducing a key according to its number, a set of gauges, a code indicating, according to the number, which are the gauges to be used and a conventional reproducing machine.
Consequently, the invention consists in a process of manufacturing, with gauges having determined charac- FIG. 2 is a diagram of a machine for reproducing keys by the pantograph system.
In this Figure, 1 represents the milling cutter having an angle smaller than the smallest of the angles to be reproduced, 2 represents the sensing member, 3 the vice or support for the master key or the gauge 4, 4 the gauge, 5 the support of the blank, 6 the blank, 7 the outer face of the gauge-holding vice, 8 the carriage.
FIG. 3 is a section through a gauge-holding vice (3 or 5 of FIG. 2) of the reproducing machine, where 9 represents the stop inside the vice.
The notch 4a of the gauge (FIG. ll) has the same shape, depth and is located at exactly the same distance from the reference face 4b, as that of the key to be reproduced. Obviously, there will be as many gauges as there are different shapes, depths and distances from the reference face 4b, as well as their possible combinations.
According to the present invention, for reproducing a key according to its number, it should firstly be sought in the pre-established code whichare the gauges which correspond to the number of the key. If the key has, for example, five notches, five gauges will also be found.
Then, one of the gauges is placed, in any order, in the vice 3 (FIG. 2) by pressing the reference face 40 (FIG. 1) of said gauge against the face of the vice 7 (FIG. 2) whilst simultaneously ensuring that the reference face 4d (FIG. 1) is indeed against the reference face 9 of the vice (FIG. 3). Once the gauge is tightened by the vice in this position, the carriage (FIG. 2) is moved to cause the gauge 4 to bear against the sensing member 2 (FIG. 2) ensuring that the outer face of the sensing member bears against the reference face 412 of the gauge (FIG. 1). The blank 6 (FIG. 2) is placed in the vice 5 (FIG. 2), care being taken that the rear face of the blank abuts against the stop 9 (FIG. 3) and that the face 612 indicating the beginning of the blank abut against the outer face of milling cutter 1 (FIG. 2). In this position, the vice 5 is tightened. By actuating the carriage 8, the notch 4a (FIG. 1) of the gauge is reproduced in the blank 6 (FIG. 2).
Once this notch is reproduced, the carriage is disengaged from the milling cutter and is taken to the rest position. In this rest position, the gauge 4 (FIG. 2) is replaced by any other gauge of the set chosen, care being taken to place it in the same position, i.e., face 4d of the gauge (FIG. 1) against the reference face 9 of the vice teristics and a code which translates the number of the key, not into technical data but into sets of gauges.-
The invention will be described in greater detail with reference to the accompanying drawings in which:
FIG. 1 is a view of a gauge, generally made of steel, where I represents the notch and 2, 3 and 4 reference faces.
3 (FIG. 3) and the rear face 4c of the gauge (FIG. 1) against the face 7 of the vice 3. Thus the notch of the new gauge is reproduced by repeating the operation five times, if there are five gauges. The key will therefore be reproduced according to its number.
What is claimed is:
1. A method of reproducing a flat key from a blank according to number by the use of a set of gauges, in a conventional machine for reproducing keys by the pantograph process, said machine comprising a milling cutter, a gauge vice and a blank vice, said vices being mounted on a carriage in fixed relationship to each other, each vice being provided with at least two reference surfaces, a sensing member in fixed relationship to said cutter, each said gauge having at least two reference surfaces for locating a notch thereon of the shape and depth of the notch to be reproduced, the total number of gauges corresponding to the total number of notches to be reproduced on said blank, each blank having at least two reference surfaces, said method comprising the steps of: translating said number by means of a pre-established code into the specific gauges to be used to comprise said set of gauges; placing and securing one of said gauges in said gauge vice with said reference surfaces of said gauge and of said gauge vice collocated; placing and securing said blank in said blank vice with said reference surfaces of said blank and said blank vice collocated; moving said carriage so as to cause the gauge to bear against said sensing member and simultaneously causing said milling gauge successively on said blank.
Claims (1)
1. A method of reproducing a flat key from a blank according to number by the use of a set of gauges, in a conventional machine for reproducing keys by the pantograph process, said machine comprising a milling cutter, a gauge vice and a blank vice, said vices being mounted on a carriage in fixed relationship to each other, each vice being provided with at least two reference surfaces, a sensing member in fixed relationship to said cutter, each said gauge having at least two reference surfaces for locating a notch thereon of the shape and depth of the notch to be reproduced, the total number of gauges corresponding to the total number of notches to be reproduced on said blank, each blank having at least two reference surfaces, said method comprising the steps of: translating said number by means of a pre-established code into the specific gauges to be used to comprise said set of gauges; placing and securing one of said gauges in said gauge vice with said reference surfaces of said gauge and of said gauge vice collocated; placing and securing said blank in said blank vice with said reference surfaces of said blank and said blank vice collocated; moving said carriage so as to cause the gauge to bear against said sensing member and simultaneously causing said milling cutter to engage said blank; reproducing the notch of said gauge on said blank; disengaging the gauge from the sensing member and simultaneously disengaging said blank from said cutter; and replacing said gauge successively with each of the other gauges of said set and repeating the step of placing and securing each said other gauges in said gauge vice, causing the gauge to bear against said sensing member and said cutter to engage said blank, thereby reproducing the notch of each gauge successively on said blank.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7009833A FR2100538A1 (en) | 1970-03-19 | 1970-03-19 | PROCEDURE FOR REPRODUCING FLAT KEYS FROM THEIR NUMBER, CODE AND TOOLS USED FOR THESE PURPOSES |
Publications (1)
Publication Number | Publication Date |
---|---|
US3791240A true US3791240A (en) | 1974-02-12 |
Family
ID=9052523
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US00123736A Expired - Lifetime US3791240A (en) | 1970-03-19 | 1971-03-12 | Method of reproducing flat keys and tools used to this end |
Country Status (5)
Country | Link |
---|---|
US (1) | US3791240A (en) |
DE (1) | DE2113173A1 (en) |
ES (1) | ES389156A1 (en) |
FR (1) | FR2100538A1 (en) |
GB (1) | GB1305498A (en) |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3902382A (en) * | 1974-03-14 | 1975-09-02 | Curtis Noll Corp | Calibration gauge for key duplicating machine |
US4102247A (en) * | 1976-10-04 | 1978-07-25 | Victor Vincent Fanberg | Depth key set |
US4188163A (en) * | 1978-07-21 | 1980-02-12 | John Juskevic | Key duplicating machine |
US4256423A (en) * | 1979-08-13 | 1981-03-17 | John Juskevic | Key cutting machine |
US4646590A (en) * | 1985-11-21 | 1987-03-03 | Jones Brian W | Temporary key template |
WO1992007677A1 (en) * | 1990-10-25 | 1992-05-14 | Bush Robert C | Code duplicator partial silhouette method |
US5133127A (en) * | 1987-03-02 | 1992-07-28 | Bush Robert C | Bush code duplicator partial silhouette method |
US20040253067A1 (en) * | 2003-04-16 | 2004-12-16 | Karl-Heinz Bosch | Method of producing a key blank |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1948260A (en) * | 1933-02-11 | 1934-02-20 | F W Stewart Mfg Company | Key cutting machine |
US2731087A (en) * | 1950-10-14 | 1956-01-17 | Howard Freedman | Code key cutting machine |
US3011411A (en) * | 1959-09-17 | 1961-12-05 | Joseph H Raymond | Code key cutting machine |
DE1209847B (en) * | 1964-08-01 | 1966-01-27 | Boerkey Nachf August | Key milling machine |
-
1970
- 1970-03-19 FR FR7009833A patent/FR2100538A1/en not_active Withdrawn
-
1971
- 1971-03-03 ES ES389156A patent/ES389156A1/en not_active Expired
- 1971-03-12 US US00123736A patent/US3791240A/en not_active Expired - Lifetime
- 1971-03-18 DE DE19712113173 patent/DE2113173A1/en active Pending
- 1971-04-19 GB GB2469371*A patent/GB1305498A/en not_active Expired
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1948260A (en) * | 1933-02-11 | 1934-02-20 | F W Stewart Mfg Company | Key cutting machine |
US2731087A (en) * | 1950-10-14 | 1956-01-17 | Howard Freedman | Code key cutting machine |
US3011411A (en) * | 1959-09-17 | 1961-12-05 | Joseph H Raymond | Code key cutting machine |
DE1209847B (en) * | 1964-08-01 | 1966-01-27 | Boerkey Nachf August | Key milling machine |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3902382A (en) * | 1974-03-14 | 1975-09-02 | Curtis Noll Corp | Calibration gauge for key duplicating machine |
US4102247A (en) * | 1976-10-04 | 1978-07-25 | Victor Vincent Fanberg | Depth key set |
US4188163A (en) * | 1978-07-21 | 1980-02-12 | John Juskevic | Key duplicating machine |
US4256423A (en) * | 1979-08-13 | 1981-03-17 | John Juskevic | Key cutting machine |
US4646590A (en) * | 1985-11-21 | 1987-03-03 | Jones Brian W | Temporary key template |
US5133127A (en) * | 1987-03-02 | 1992-07-28 | Bush Robert C | Bush code duplicator partial silhouette method |
WO1992007677A1 (en) * | 1990-10-25 | 1992-05-14 | Bush Robert C | Code duplicator partial silhouette method |
US20040253067A1 (en) * | 2003-04-16 | 2004-12-16 | Karl-Heinz Bosch | Method of producing a key blank |
Also Published As
Publication number | Publication date |
---|---|
GB1305498A (en) | 1973-01-31 |
ES389156A1 (en) | 1977-02-01 |
FR2100538A1 (en) | 1972-03-24 |
DE2113173A1 (en) | 1971-10-14 |
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