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US3250101A - Theft prevention devices - Google Patents

Theft prevention devices Download PDF

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Publication number
US3250101A
US3250101A US366031A US36603164A US3250101A US 3250101 A US3250101 A US 3250101A US 366031 A US366031 A US 366031A US 36603164 A US36603164 A US 36603164A US 3250101 A US3250101 A US 3250101A
Authority
US
United States
Prior art keywords
switch
locking
slide
control member
pawl
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
US366031A
Other languages
English (en)
Inventor
Jeavons Philip Swingewood
Coleman David George
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.)
ArvinMeritor Light Vehicle Systems UK Ltd
Original Assignee
Wilmot Breeden Ltd
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 Wilmot Breeden Ltd filed Critical Wilmot Breeden Ltd
Application granted granted Critical
Publication of US3250101A publication Critical patent/US3250101A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R25/00—Fittings or systems for preventing or indicating unauthorised use or theft of vehicles
    • B60R25/01—Fittings or systems for preventing or indicating unauthorised use or theft of vehicles operating on vehicle systems or fittings, e.g. on doors, seats or windscreens
    • B60R25/02—Fittings or systems for preventing or indicating unauthorised use or theft of vehicles operating on vehicle systems or fittings, e.g. on doors, seats or windscreens operating on the steering mechanism
    • B60R25/021—Fittings or systems for preventing or indicating unauthorised use or theft of vehicles operating on vehicle systems or fittings, e.g. on doors, seats or windscreens operating on the steering mechanism restraining movement of the steering column or steering wheel hub, e.g. restraining means controlled by ignition switch
    • B60R25/0211—Fittings or systems for preventing or indicating unauthorised use or theft of vehicles operating on vehicle systems or fittings, e.g. on doors, seats or windscreens operating on the steering mechanism restraining movement of the steering column or steering wheel hub, e.g. restraining means controlled by ignition switch comprising a locking member radially and linearly moved towards the steering column
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R25/00—Fittings or systems for preventing or indicating unauthorised use or theft of vehicles
    • B60R25/002—Locking of control actuating or transmitting means
    • B60R25/003—Locking of control actuating or transmitting means locking of control actuating means
    • B60R25/007—Locking of control actuating or transmitting means locking of control actuating means of hand actuated control means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R25/00—Fittings or systems for preventing or indicating unauthorised use or theft of vehicles
    • B60R25/01—Fittings or systems for preventing or indicating unauthorised use or theft of vehicles operating on vehicle systems or fittings, e.g. on doors, seats or windscreens
    • B60R25/02—Fittings or systems for preventing or indicating unauthorised use or theft of vehicles operating on vehicle systems or fittings, e.g. on doors, seats or windscreens operating on the steering mechanism
    • B60R25/021—Fittings or systems for preventing or indicating unauthorised use or theft of vehicles operating on vehicle systems or fittings, e.g. on doors, seats or windscreens operating on the steering mechanism restraining movement of the steering column or steering wheel hub, e.g. restraining means controlled by ignition switch
    • B60R25/02142—Fittings or systems for preventing or indicating unauthorised use or theft of vehicles operating on vehicle systems or fittings, e.g. on doors, seats or windscreens operating on the steering mechanism restraining movement of the steering column or steering wheel hub, e.g. restraining means controlled by ignition switch comprising externally controlled safety devices for preventing locking during vehicle running condition
    • 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
    • Y10T70/00—Locks
    • Y10T70/50—Special application
    • Y10T70/5611—For control and machine elements
    • Y10T70/5646—Rotary shaft
    • Y10T70/565—Locked stationary
    • Y10T70/5655—Housing-carried lock
    • Y10T70/5664—Latching bolt
    • 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
    • Y10T70/00—Locks
    • Y10T70/50—Special application
    • Y10T70/5889—For automotive vehicles
    • Y10T70/5956—Steering mechanism with switch

Definitions

  • THEFT PREVENTION DEVICES Filed May a, 1964 2 sheets-sheet 2 AT'roaNeY l United States Patent O 3,250,101 THEFT PREVENTION DEVICES Philip Swingewood .leaves, Hall Green, Birmingham, and
  • a theft prevention device having a key-operated switch mechanism and a manually and separately operable locking mechanism, in use the switch controlling a Vital electrical circuit of the vehicle and the locking mechanism acting to render inoperable a vital mechanical part of the vehicle; the mechanisms are interlocked so that one cannot be operated unless the other is in the inoperative position and so that When the locking mechanism is in the locked position it automatically returns to the inoperative or unlocked position when the key is turned in the direction opposite to that required to operate the switch mechanism.
  • the locking mechanism comprises a manually operable locking bolt, and the present invention relates to devices using such a bolt.
  • the switch and locking mechanisms are so interrelated that turning the key for the switch mechanism in said opposite direction is, if necessary, capable of producing positive retracting movement of the locking bolt.
  • a return spring may be provided also to provide retraction of the bolt, but the aforesaid interrelation of the mechanisms provides a valuable safety feature in that it ensures positive retraction of the bolt in the event of spring failure.
  • the return spring may be omitted, positive retraction of the bolt by means of the key always being relied on to provide the bolt return movement. Even when the spring is fitted and operative, binding of the bolt which might render the spring force insufficient will not prevent bolt return. Such binding may occur, for example, if the bolt is in locking engagement with the vehicle steering system and the steering is hard over.
  • the locking mechanism comprises a slideable control member which serves to urgeV the locking bolt towards the steering column of the vehicle when fitted.
  • the control member may be recessed within a housing of the device to avoid inadvertent operation and arranged to be accessible through an yaperture in the housing for direct manual operation.
  • the interlocking feature may be at least in part obtained by engagement of a switch operating shaft, interconnecting the switch itself and a keyoperated lock, ⁇ and the control member.
  • the control member may have a suitably profiled aperture through Which the shaft passes, and a pawl-like retaining member mounted on the switch shaft for engagement with the control member may act to retain the control member in the locking position and also to produce positive retraction of the control member.
  • the retaining member may ⁇ act through a return spring for the control member, movement of the pawl member on turning the key in said opposite direction compressing the spring to a soli condition, i.e. With immediately adjacent turns in abutment, should positive retraction be necessary.
  • FIGURE l is a front perspective view of the device as fitted with a portion adjacent the steering column and the column itself shown in section,
  • FIGURE 2 is a sectional view on the line II-II in FIGURE 1,
  • FIGURE 3 is a sectional view on the line III--III in lFIGURE 2,
  • FIGURE 4 is a sectional view on the line IV-IV in FIGURE 3
  • r FIGURE 5 is a view of the lock showing the various operative positions thereof.
  • a die-cast housing 1 is formed with a mounting bore 2 through which the steering column passes when the device is iitted.
  • the housing surrounds the usual tubular outer casing 3 of the column and is clamped thereto by bolts such as 4, some of which have shear-off heads 5 to prevent unauthorised removal.
  • the housing being suitably split at 6 for mounting purposes.
  • a control element or slide 7 of plate-like form is slidably mounted within the housing 1 in a slide way 8 disposed transversely of the column and closed by an outer end wall 9 with a central aperture 10 through which the slide 7 is accessible for direct manual operation.
  • a sliding bolt 12 is arranged in the slide 7 with a maximum projection from the inner end of the latter from which it is spring loaded by means of a spring 13; projection ofthe bolt 12 is limited by a head 14 thereof.
  • the bolt 12 is resiliently urged by the bolt spring 13 into engagement with a sleeve 15 fixed to and surrounding the normal central shaft 16 of the steering column.
  • the sleeve 15 has a plurality of locking recesses 17 spaced around the sleeve periphery for engagement by the bolt 12.
  • the switch mechanism 18 comprises a pin-tumbler type key-operated lock 19 which is connected through an operating shaft 20 to the combined ignition and starter switch 22.
  • the shaft 20 has a normal circular crosssection, and over a portion of its length coextensive with the thickness of the slide 7 and a platelike pawl forming a retaining member 23 mounted alongside the slide 7 ⁇ has a segment bounded by part-chords 24 and 25 (see FIGURE 3) cut away to provide a reduced section.
  • An aperture 26 in the slide 7 and through which the shaft 20 passes is elongated in the direction of the slide axis, having a general-ly circular inner end portion and a generally part-circular outer end portion bounded by a chord 27 to provide a flat chordal step with which the cutaway shaft portion engages in a manner to be described.
  • the pawl 23 is mounted on the shaft 20 with a degree of A angular lost motion, having a circular aperture 28 which fits the normal shaft section apart from an inward projection dened by two part-chordal surfaces 29 and 30 which respectively engage the base of the reduced section of the shaft at 24 and 25 at the limits of lost motion.
  • the pawl 23 has two generally radial projecting arms the lower 32 of which is directed downwardly and the upper 33 of which is directed inwardly more or less in alignment with the slide axis between two projections 34 and 35 from the adjacent side face of the slide.
  • the upper arm 33 engages at the end adjacent the shaft 20 the rear convex surface of the upper slide projection 35 at approximately the level of the switch shaft axis.
  • the upper level pawl arm 33 has a-upper edge 36 which is inclined upwardly to a cut-out step 37 arranged at the free end of the arm 33 for engagement with the outwardly facing undercut surface 38 lof the slide projection 35.
  • the lower pawl arm 32 In the inoperative position the lower pawl arm 32 on its inner side engages the lower slide projection 34, which is in the form of a circular pin, and on its outer side engages the head of a slidably mounted retraction pin 39.
  • the stem of the pin 39 is received within the inner end of a slide return spring 40 which engages the outer end of a rectangular cut-out 42 at the bottom edge of the slide 7 and within which the retraction pin 39 moves.
  • a torsion spring 43 centres the switch4 shaft 20 so 'that with the key removed in the off position marked O 4 gized but not the ignition circuit, and further movement to position 2 is necessary for unlocking.
  • the shaft enters into the outer portion of the slide aperture 26; as it does so the upper slide projection 35 slides along the upper pawl arm 33, turning the pawl 23 slightly against the return spring 40 until it reaches the cut-out step 37, whereupon the pawl 33 clicks into position engaging the projection surface 38 to retain the slide 7 in the locked position.
  • auxiliary switch position is shown at 1, and this position the mechanism can remain but the key cannot be removed; the vehicle auxiliary electrical circuit is enerthat the hazardous circumstance of an attempt to drive the vehicle with the steering column locked cannot arise. If the steering column shaft 16 is locked the ignition circuit must be open and cannot be closed until the locking mechanism has first been released by turning the ignition key in the opposite direction (to position 2) to that required for switch operation. The action of the pawl 23 through the retraction pin 39 and the return spring 40 ensures that if the key is turned to the position 2 the slide 7 must be retracted and the steering column free.
  • a theft prevention device for a motor vehicle comprising a switch mechanism, a key-operated lock, a'switchoperating shaft interconnecting vthe switch mechanism and the lock so that turning the latter by the appropriate key operates the switch mechanism, a manually and separately operable locking mechanism including a locking bolt for engagement with a mechanical part of the vehicle, and a slidable control member in which the locking bolt is mounted, the switch-operating shaft and the control member interengaging to interlock the switch and locking mechanisms so that one cannot be operated unless the other is in the inoperative position, a rotary member through which the switch-operating shaft passes and which is rotationally coupled thereto with a limited degree of angular lost motion, and spring means through which said rotary member acts to urge the locking bolt in the unlocking direction when the switch-operating shaft is turned from the inoperative position in a direction opposite to that required to operate the switch mechanism.
  • control member is recessed within a housing of the device to avoid inadvertent operation and is arranged to be accessible through an aperture in the housing for direct manual operation.
  • control member has a suitably profiled aperture through which the shaft passes, and said rotary member is mounted on the switch shaft and acts as a pawl for engagement with the control membere to retain the latter in the locking position and also to produce positive retraction of the control member when necessary.
  • a theft prevention device for a motor vehicle comprising a switch mechanism, a key-operated lock, a switchoperating shaft interconnecting the switch mechanism and the lock so that turning the latter by the appropriate key operates the switch mechanism, a manually and separately operable locking mechanism including a locking bolt for engagement with a mechanical part of the vehicle, and a slidable control member in which the locking bolt is mounted, the switch-operating shaft passing through an aperture in the control member, which aperture and the shaft are so profiled that they interengage to interlock the switch and locking mechanisms so that one cannot be operated unless the other is in the inoperative lposition, a rotary member through which the switch-operat- -ing shaft passes and which is rotationally coupled thereto with a limited degree of angular lost motion, and spring means through which said rotary member acts on said control member to urge the locking bolt in the unlocking direction when the switch-operating shaft is turned from the inoperative position -in a direction opposite to that required to operate the switch mechanism.
  • a device wherein a return spring for the control member forms said spring means and movement of said rotary member in said opposite direction compresses the spring to a solid condition
  • a manually and separately operable locking mechanism including a locking bolt for engagement with a mechanical part of the vehicle, and a slidable control member for the locking bolt, the switch-operating shaft and the control member interengaging to interlock the switch and locking mechanisms so that one cannot be operated unless the other is in the inoperative position, a pawl member which is mounted on the switch-operating shaft and which is rotationally cou ⁇ - pled thereto with a limited degree of angular lost motion, the control member having a projection which is engaged by the pawl member to retain the locking mechanism in the operative locking position, 'and spring means through which said pawl member acts to urge the locking bolt in the unlocking direction when the switch-operating shaft is turned to free the pawl from engagement with said projection, from the inoperative position in a direction opposite to that required to operate the switch mechanism, the spring means being positioned between the
  • a theft prevention device for a motor vehicle comprising an ignition switch mechanism, a key-operated lock, a switch-operating shaft interconnecting the switch mechanism and the lock so that turning the latter by the appropriate key operates the switch mechanism, a manually and separately operable locking mechanism including a locking bolt for engagement with a steering column of the vehicle, and a slidable control member in which the locking bolt is mounted, the switch-operating shaft and the control member interengaging to interlock the switch and locking mechanisms so that one cannot be operated unless the other is in the inoperative position, a pawl member which is mounted on the switch-operating shaft and which is rotationally coupled thereto with a limited degree of angular lost motion, the pawl member having an upper projecting arm for engagement with a projection of the control member to retain the latter in the operative locking position, and spring means which act between the control member and a lower projecting arm of the pawl member to urge the latter into engagement with said projection, so that the pawl member acts through the spring means to urge the locking mechanism in the
  • said upper projecting arm has an inclined upper edge which in the operative position engages the rear surface of said projection to retain the control member in the inoperative position, from which it can be displaced manually against the spring loading of the pawl member by said spring means, and a step which then engages the front surface of said projection to retain the control member in the operative position.
  • a device wherein turning the pawl member in said opposite direction brings the turns of a spring providing said spring means to a solid spring condition if the control member tends to jam, whereby to produce positive retraction of the locking mechanism on continued turning of the pawl member by means of the switch-operating shaft.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Lock And Its Accessories (AREA)
US366031A 1961-01-19 1964-05-08 Theft prevention devices Expired - Lifetime US3250101A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2133/61A GB993147A (en) 1961-01-19 1961-01-19 Improvements in or relating to theft prevention devices for motor vehicles

Publications (1)

Publication Number Publication Date
US3250101A true US3250101A (en) 1966-05-10

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ID=33155726

Family Applications (1)

Application Number Title Priority Date Filing Date
US366031A Expired - Lifetime US3250101A (en) 1961-01-19 1964-05-08 Theft prevention devices

Country Status (3)

Country Link
US (1) US3250101A (fr)
FR (2) FR85727E (fr)
GB (2) GB993147A (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4854141A (en) * 1985-05-31 1989-08-08 Nacam Anti-rotation locking device including a torque limitation for a motor vehicle steering column
US5121616A (en) * 1988-08-04 1992-06-16 Tibbe Kg Steering lock for motor vehicles
US6109075A (en) * 1998-04-06 2000-08-29 Daimlerchrysler Ag Securing arrangement for a steering wheel lock

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITBA20020043A1 (it) * 2002-12-04 2004-06-05 Block Shaft Dispositivo meccanico per il bloccaggio dell'albero dello sterzo di un veicolo.
CN113738660B (zh) * 2021-11-05 2022-03-11 胜利油田海洋电气有限责任公司 一种便于拆卸的潜油电泵井下测试仪

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1774259A (en) * 1925-05-25 1930-08-26 Fairchild Lock Corp Trip lock
USRE20352E (en) * 1937-05-04 Automobile lock structure
US2087982A (en) * 1936-07-29 1937-07-27 Oakes Prod Corp Automobile lock
US2148609A (en) * 1935-05-31 1939-02-28 Gen Motors Corp Steering column lock
US2295807A (en) * 1941-09-22 1942-09-15 Houdaille Hershey Corp Steering post and ignition lock assembly

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USRE20352E (en) * 1937-05-04 Automobile lock structure
US1774259A (en) * 1925-05-25 1930-08-26 Fairchild Lock Corp Trip lock
US2148609A (en) * 1935-05-31 1939-02-28 Gen Motors Corp Steering column lock
US2087982A (en) * 1936-07-29 1937-07-27 Oakes Prod Corp Automobile lock
US2295807A (en) * 1941-09-22 1942-09-15 Houdaille Hershey Corp Steering post and ignition lock assembly

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4854141A (en) * 1985-05-31 1989-08-08 Nacam Anti-rotation locking device including a torque limitation for a motor vehicle steering column
US5121616A (en) * 1988-08-04 1992-06-16 Tibbe Kg Steering lock for motor vehicles
US6109075A (en) * 1998-04-06 2000-08-29 Daimlerchrysler Ag Securing arrangement for a steering wheel lock

Also Published As

Publication number Publication date
FR85727E (fr) 1965-10-01
FR1314632A (fr) 1963-01-11
GB993147A (en) 1965-05-26
GB1003598A (en) 1965-09-08

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