US3661498A - Spark wheel actuating mechanism particularly for cigarette lighters - Google Patents

Spark wheel actuating mechanism particularly for cigarette lighters Download PDF

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Publication number
US3661498A
US3661498A US13642A US3661498DA US3661498A US 3661498 A US3661498 A US 3661498A US 13642 A US13642 A US 13642A US 3661498D A US3661498D A US 3661498DA US 3661498 A US3661498 A US 3661498A
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US
United States
Prior art keywords
lever
spark wheel
arming
rocker
pivot
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
Application number
US13642A
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English (en)
Inventor
Andre Pierre Francois Du Pont
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.)
ST Dupont SA
Original Assignee
ST Dupont SA
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by ST Dupont SA filed Critical ST Dupont SA
Application granted granted Critical
Publication of US3661498A publication Critical patent/US3661498A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23Q—IGNITION; EXTINGUISHING-DEVICES
    • F23Q2/00—Lighters containing fuel, e.g. for cigarettes
    • F23Q2/34—Component parts or accessories
    • F23Q2/46—Friction wheels; Arrangement of friction wheels
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23Q—IGNITION; EXTINGUISHING-DEVICES
    • F23Q2/00—Lighters containing fuel, e.g. for cigarettes
    • F23Q2/02—Lighters with liquid fuel fuel which is fluid at atmospheric pressure
    • F23Q2/04—Lighters with liquid fuel fuel which is fluid at atmospheric pressure with cerium-iron alloy and wick with friction ignition
    • F23Q2/06—Lighters with liquid fuel fuel which is fluid at atmospheric pressure with cerium-iron alloy and wick with friction ignition with friction wheel
    • F23Q2/08—Lighters with liquid fuel fuel which is fluid at atmospheric pressure with cerium-iron alloy and wick with friction ignition with friction wheel with ignition by spring action of the cover

Definitions

  • ABSTRACT in a spark wheel actuating mechanism of the type that accumulates and suddenly releases energy, in order to render the 22 Filed: Feb. 24, 1970 [21] Appl. No.:
  • the said [30] Forelgn Apphcanon Data mechanism includes an arming disc tumable by the user; said Feb. 21, 1969 arming disc compresses a driving spring which exerts a force France..................20166904557 on a pivotable lever immobilized by a detent and operatively connected to the spark wheel; at the end of its possible angular the said arming disc causes displacement of said detent.
  • the said arm is rapidly swung by said spring f, high-speed rotation is imparted to the spark wheel.
  • This invention relates to spark wheel actuating mechanisms which, under the effect of a continued force exerted by the user, accumulate potential energy which is suddenly released rotating the spark wheel with great acceleration and speed.
  • the spontaneous ignition of particles torn from a flint by the frictional engagement with a spark wheel depends in a large measure on the heat generated by such friction. To ensure ignition, it is thus advantageous to increase the heat. Such heat increase, in turn, may be achieved by increasing the rotational speed of the spark wheel.
  • the rotational speed of the spark wheel depends entirely, or at least in part, on the skill of the user, whether he acts directly upon the spark wheel driving means or whether he causes the spark wheel to rotate by an intennediate linkage system.
  • a point of maximum resistance has to be overcome by the arming means.
  • the user has to increase the force exerted by his finger on the anning means, and thus accumulating in his finger a certain potential energy which is suddenly released as soon as said resistance is overcome and thus the necessary rotational speed is imparted on the spark wheel.
  • the spark generating mechanism which is formed of a lever and pivoting link assembly, is actuated by elastic means during the displacement of an arming means.
  • the said spark generating mechanism is retained in an inactive position and the elastic means accumulates potential energy during a first part of the displacement of the arming means.
  • the spark generating mechanism is released and is driven by the suddenly released elastic means.
  • the said spring causes a sudden, rapid pivotal motion of said arm.
  • FIGS. 1, 2 and 3 are bottom plan views of the preferred embodiment of the invention in positions of rest, tensioning and releasing, respectively.
  • the cylindrical cigarette lighter body includes at its upper ten'ninus a fixed circular mounting plate 3 provided along a peripheral portion with a wide cutout or notch C. Openings in the plate 3 to accommodate the burner and the flint tube are not shown
  • the means for arming the spark wheel actuating mechanism is formed of a disc 1, the periphery 1a of which is knurled for firm engagement with the users finger. Such engagement is further assisted by a disc diameter slightly larger than that of the cylindrical lighter body.
  • the arming disc 1 is rotatably mounted on the mounting plate 3 by means of a centrally disposed bearing pin 2.
  • a support 4 integral with a nose A oriented inwardly.
  • the support 4 carries an abutment lug 5 and a pin 13 about which pivots a rod 10 by means of a collar 6 integral with said rod.
  • the spark wheel which is not visible in the figures, has a shaft 16, to which there is keyed a hexagonal member G carrying a ratchet wheel 17. In this manner, the spark wheel and the ratchet wheel 17 are constrained to rotate in unison.
  • a plate 15 which carries a pawl 18 pivotally secured thereto by a pin 19.
  • the pawl 18 is urged against the ratchet wheel 17 by a spring 20 also carried by the plate 15.
  • An angularly bent lever 7 is mounted for pivotal motion in the plane of the plate 15 about a pin 8 affixed to the mounting plate 3.
  • the pivot pin 8 divides the lever 7 into two an'ns of substantially unequal lengths.
  • the lever 7 carries a joumaling thimble 9 secured thereto by means of a pivot pin E.
  • an arcuate link 12 To the long arm of lever 7 there is pivotally mounted, between pins 8 and E, an arcuate link 12 by means of a pin 13.
  • the other end of arcuate link 12 is pivotally jointed to plate 15.
  • the arm 12 is shaped in such a manner that, in its position of rest, it partially surrounds the ratchet wheel 17 to further reduce the dimensions of the device.
  • the rod 10 slidably projects through the thimble 9 and carries at its terminus a head D which forms an abutment for the thimble 9.
  • a coil spring 11 surrounds the rod 10 and is slightly precompressed between the collar 6 and the thimble 9 when the latter abuts the head D.
  • the spark wheel actuating mechanism further comprises a detent means formed by a rocker 21 pivotally mounted on plate 3 by a pin 22.
  • a spring 24 urges the rocker 21 to engage an abutment lug 23 integral with plate 3.
  • the pivot pin 22 divides the rocker or detent 21 into twoarms of unequal lengths.
  • a roller 25 carried at the terminus of the shorter arm of rocker 21 is nested in a depression H provided in the shorter arm of lever 7.
  • the rocker 21 carries a roller 26 which, in the position of rest, lies substantially tangentially with respect to the base of the cutout C.
  • the user engages, usually with his thumb, the knurled portion 1a of the arming disc 1 and starts rotating it about pivot 2 (FIG. 2). During such rotation, the support 4 travels in cutout C. Since the lever 7 is still held locked by the roller 25 of the rocker 21, the rod 10 slides in the thimble 9 and, as a'result, the driving spring 11 is compressed between the thimble 9 and the collar 6.
  • the rotation of the ratchet wheel 17 is equal to onefifth of its circumference.
  • the pivotal motion of the lever 7 and consequently the rotation of the plate 15 and of the ratchet wheel 17 are limited by an abutment lug 27 affixed to the plate 3. In this manner, an impact of thimble 9 against the head D'is prevented.
  • the rocker 21 in this position of release, the rocker 21 is not able to return to its initial position under the action of spring 24, since the roller 25 is in abutting engagement with the frontal edge of the short arm of lever 7.
  • the mechanism is re-set into its initial position of rest and is ready to perform a new cycle of operation.
  • a spark wheel actuating mechanism comprising A. an arming means manually rotatable to a predetermined extent, B. a rod pivotally secured at one end to said arming means,
  • F.- detent means maintaining said lever locked until said arming means reaches a predetermined position during the course of its limited rotary movement under the effect of a manual force applied thereto, said detent means being formed of a rocker angularly movable about a pivot, said pivot dividing said rocker into 1. a relatively short arm having an end for engaging said lever to hold the latter in a locked position and 2. a relatively long arm having an end,
  • G means connecting said lever to said spark wheel to cause rotation of the latter upon pivotal motion of said lever
  • H means for engaging the end of said relatively long arm to I pivot said rocker and to move the end of said relatively short arm out of contact with said lever when said arming means reaches said predetermined position for unlocking said lever to permit a pivotal motion thereof in response to said torque.
  • a spark wheel actuating mechanism comprising A. an arming means manually rotatable to a predetermined extent
  • detent means maintaining said lever locked until said arming means reaches a predetermined position during the course of its limited rotary movement under the effect of a manual force applied thereto, said detent means being formed of a rocker angularly movable about a pivot, said pivot dividing said rocker into 1. a relatively short arm having an end for engaging said lever to hold the latter in a locked position and 2. a relatively long arm having an en
  • a spark wheel actuating mechanism as defined in claim 2, wherein said means connecting said spark wheel with said plate is formed of A. a ratchet wheel connected to said spark wheel and B. a pawl pivotally secured to said plate and cooperating with a tooth of said ratchet wheel during pivotal movement of said plate in response to said torque.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Lighters Containing Fuel (AREA)
  • Transmission Devices (AREA)
  • Mechanical Control Devices (AREA)
US13642A 1969-02-21 1970-02-24 Spark wheel actuating mechanism particularly for cigarette lighters Expired - Lifetime US3661498A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR6904557A FR2032218A5 (de) 1969-02-21 1969-02-21

Publications (1)

Publication Number Publication Date
US3661498A true US3661498A (en) 1972-05-09

Family

ID=9029465

Family Applications (1)

Application Number Title Priority Date Filing Date
US13642A Expired - Lifetime US3661498A (en) 1969-02-21 1970-02-24 Spark wheel actuating mechanism particularly for cigarette lighters

Country Status (8)

Country Link
US (1) US3661498A (de)
AT (1) AT288747B (de)
BE (1) BE746263A (de)
CH (1) CH499062A (de)
DE (1) DE2008237A1 (de)
FR (1) FR2032218A5 (de)
GB (1) GB1300245A (de)
NL (1) NL7002535A (de)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1485342A (en) * 1917-12-06 1924-02-26 Said O Mara Cigar lighter
US2196879A (en) * 1937-07-15 1940-04-09 Brown & Bigelow Desk lighter
US2514709A (en) * 1946-05-29 1950-07-11 Lauber Eduard Traugott Lighter

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1485342A (en) * 1917-12-06 1924-02-26 Said O Mara Cigar lighter
US2196879A (en) * 1937-07-15 1940-04-09 Brown & Bigelow Desk lighter
US2514709A (en) * 1946-05-29 1950-07-11 Lauber Eduard Traugott Lighter

Also Published As

Publication number Publication date
AT288747B (de) 1971-03-25
CH499062A (fr) 1970-11-15
GB1300245A (en) 1972-12-20
DE2008237A1 (de) 1970-12-03
FR2032218A5 (de) 1970-11-20
BE746263A (fr) 1970-07-31
NL7002535A (de) 1970-08-25

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