US3715531A - Distributor housing and plate assembly with rotatable clamping means - Google Patents

Distributor housing and plate assembly with rotatable clamping means Download PDF

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Publication number
US3715531A
US3715531A US00164313A US3715531DA US3715531A US 3715531 A US3715531 A US 3715531A US 00164313 A US00164313 A US 00164313A US 3715531D A US3715531D A US 3715531DA US 3715531 A US3715531 A US 3715531A
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US
United States
Prior art keywords
base plate
casing
support surface
distributor
clamping device
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
US00164313A
Inventor
G Keeley
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.)
ZF International UK Ltd
Original Assignee
Lucas Industries 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
Priority claimed from GB3569470A external-priority patent/GB1343410A/en
Application filed by Lucas Industries Ltd filed Critical Lucas Industries Ltd
Application granted granted Critical
Publication of US3715531A publication Critical patent/US3715531A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02P—IGNITION, OTHER THAN COMPRESSION IGNITION, FOR INTERNAL-COMBUSTION ENGINES; TESTING OF IGNITION TIMING IN COMPRESSION-IGNITION ENGINES
    • F02P7/00—Arrangements of distributors, circuit-makers or -breakers, e.g. of distributor and circuit-breaker combinations or pick-up devices
    • F02P7/02—Arrangements of distributors, circuit-makers or -breakers, e.g. of distributor and circuit-breaker combinations or pick-up devices of distributors
    • F02P7/021—Mechanical distributors
    • 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
    • Y10T292/00—Closure fasteners
    • Y10T292/08—Bolts
    • Y10T292/1039—Swinging and camming
    • Y10T292/1041—Rigid operating means
    • 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
    • Y10T292/00—Closure fasteners
    • Y10T292/08—Bolts
    • Y10T292/1043—Swinging
    • Y10T292/1075—Operating means
    • Y10T292/1083—Rigid

Definitions

  • a distributor according to the invention includes a hollow casing formed internally with a support surface, a contact breaker assembly base plate engaged with said support surface and at least one cam member engaged with the base plate and the casing and operable to clamp said base plate on said support surface.
  • said support surface is in the form of a peripheral inwardly directed shoulder integral with the casing.
  • a pair of cam members are provided acting between the casing and the base plate.
  • each cam member is engaged with the base plate and is rotatable relative to the base plate and the casing to engage a cam surface on the cam member with a mating surface on the casing.
  • said mating surface is defined by part of a peripheral groove in the inner surface of the casing.
  • FIG. 1 is a fragmentary sectional view of the casing of an ignition distributor
  • FIG. 2 is a plan view, to a reduced scale of the base plate of the distributor
  • FIGS. 3 and 4 are plan and side elevational views respectively of .a cam member for securing the base plate to the casing,
  • FIG. 5 is a fragmentary sectional view illustrating the base plate of FIG. 2 secured to the casing of FIG. 1, and
  • FIG. 6 is'a plan view of the part of the arrangement shown in FIG. 5.
  • the casing 11 of the distributor is cast is an aluminum alloy, and includes a peripheral inwardly directed rib 12 the upper surface of which defines a peripheral shoulder 13 at right angles from a base plate 15 (FIG. 2).
  • the base plate 15 is circular, and is formed with a centrally disposed hole 16 through which in use, the cam shaft of the distributor ext ends.
  • the diameter of the base plate 15 is substantially equal to the internal diameter of the casing 11,
  • the base plate 15 is formed with a pair of radially inwardly extending'slots l7 spaced apart around the periphery of the base plate 15 by 170.
  • a respective locking cam member 18 Engaged in each of the slots 17 is a respective locking cam member 18 (FIGS.3and 4).
  • Each of the cam members 18 includes a substantially cylindrical major portion 19 including a mid-portion 21 of reduced diameter.
  • the diameter of the portion 21 is substantially equal to the width of the slots 17 in the base plate 15, and is of axial length substantially equal to the thickness of the plate 15.
  • the diameter of the remainder of the portion 19 of each cam' member 18 is greater than the width of the slots 17, and so the cam members 18 can be inserted into the respective slots 17, theportions 21 of the cam members being received in the slots 17, and the portions of greater diameter at the ends of the portions 21 serving to retain the cam members 18 against axial movement relative to the base plate 15. Since the diameters of the portions 21 are substantially equal to the widths of the slots 17, then the cam members 18 can be rotated relative to the plate 15.
  • the portions 19 of the cam members 18 are each formed with a through bore 22 of hexagonal cross section for receiving an operating tool, for example, an allen key.
  • the portion of each of the members 18 which lies in use beneath the plate 15 is formed with an eccentric cam lobe 23' having a pair of oppositely directed ramp surfaces 24, 25.
  • the ramp surfaces 24, 25 increase in height progressively around the periphery of the member 18 from a minimum height at a pair of diametrically opposite points where the ramp surfaces 24, 25 merge with the portion 19 of the member 18, to a maximum height where the two ramp surfaces 24, 25 merge with one another.
  • the ramp surfaces 24, 25 increase in height progressively from a minimum at their outer peripheral edge, to a maximum at their roots adjacent the portion 19.
  • the cam members 18 are engaged in their respective slots 17, and are rotated to a position wherein the cam lobes 23 are inwardly directed.
  • the base plate 15 is then inserted into the casing 11, so that the periphery of the base plate 15 seats on the shoulder 13.
  • the cam members 18 are then rotated relative to the plate 15 and the casing 11, so that one or other of the surfaces 24, 25 of the cam members 18 engages the surface 14a on the casing 11.
  • Sufficient force is applied to the cam members 18, when rotating the cam members 18 relative to the plate 15, for the cam action between the surface 14 and the surfaces 24, 25 to clamp the periphery of the base plate 15 firmly against the shoulder 13.
  • the contact breaker assembly of the distributor is mounted on the base plate 15 in a conventional manner, and can of course be assembled to the base plate 15 prior to insertion of the base plate 15 into the casing 11.
  • the cam shaft of the distributor extends through the central hole 16 of the base plate 15, and rotation of the cam shaft in use operates the contact breaker assembly of the distributor in the conventional manner.
  • cam members are preferred, one or more than two cam members could be provided.
  • An ignition distributor for a road vehicle including a hollow casing, a support surface on the interior of the hollow casing, a contact breaker assembly base directed shoulder integral with the casing. 3.
  • a distributor as claimed in claim 1 in which there is provided a second clamping device.

Abstract

An ignition distributor for a road vehicle, wherein the hollow casing of the distributor is formed internally with a support surface, and the contact breaker assembly base plate of the distributor is engaged with the support surface. A pair of cam members are engaged with the base plate and the casing, and are operable upon rotation, to clamp the base plate against said support surface.

Description

[54] DISTRIBUTOR HOUSING AND PLATE ASSEMBLY WITH ROTATABLE CLAMPING MEANS [75] Inventor: Gordon Keeley, Sutton Coldfield,
England [73] Assignee: Joseph Lucas (Industries) Limited,
Birmingham, England 22 Filed: .luly20, 1971 21 Appl.No.: 164,313
[30] Foreign Application Priority Data July 23, 1970 Great Britain ..35,694/70 [52] U.S. Cl ..200/19 R, 200/31 DP, 292/202, 292/241 [51] 1nt. C1. ..H01h 9/02, E05c 3/04, E05c 3/14 {58] Field of Search..200/19 R, 19 A, 30, 31, 31 DP; 292/202, 241, 256.5
[56] References Cited UNITED STATES PATENTS 2,889,418 6/1959 Kline ..200/30 X 1 Feb.6,1973
2,489,775 11/1949 Haubert ..200/31 2,546,710 3/1951 Aldridge ..200/19 A 2,671,829 3/1954 Bales ..200/31 2,739,195 3/1956 Bales ..200/19 A 2,515,507 7/1950 Glitsch 292/241 X 2,551,408 5/1951 Amundson ..292/202 2,900,678 8/1959 Curtis 292/202 X 3,575,452 4/1971 Blomgren ..292/202 FOREIGN PATENTS OR APPLICATIONS 554,608 7/1943 Great Britain ..200/31 Primary Examiner-J. R. Scott Attorney-Holman & Stern [57] 7 ABSTRACT An ignition distributor for a road vehicle, wherein the hollow casing of the distributor is formed internally with a support surface, and the contact breaker assembly base plate of the distributor is engaged with the support surface. A pair of cam members are engaged with the base plate and the casing, and are operable upon rotation, to clamp the base plate against said support surface.
4 Claims, 6 Drawing Figures DISTRIBUTOR HOUSING ANDPLATE ASSEMBLY WITH ROTATABLE CLAMPING MEANS This invention relates to ignition distributors for road vehicles.
A distributor according to the invention includes a hollow casing formed internally with a support surface, a contact breaker assembly base plate engaged with said support surface and at least one cam member engaged with the base plate and the casing and operable to clamp said base plate on said support surface.
Preferably said support surface is in the form of a peripheral inwardly directed shoulder integral with the casing.
Conveniently a pair of cam members are provided acting between the casing and the base plate.
Preferably the or each cam member is engaged with the base plate and is rotatable relative to the base plate and the casing to engage a cam surface on the cam member with a mating surface on the casing.
Desirab ly said mating surface is defined by part of a peripheral groove in the inner surface of the casing.
One example of the invention is illustrated in the accompanying drawings, wherein FIG. 1 is a fragmentary sectional view of the casing of an ignition distributor,
FIG. 2 is a plan view, to a reduced scale of the base plate of the distributor,
FIGS. 3 and 4 are plan and side elevational views respectively of .a cam member for securing the base plate to the casing,
FIG. 5 is a fragmentary sectional view illustrating the base plate of FIG. 2 secured to the casing of FIG. 1, and
FIG. 6 is'a plan view of the part of the arrangement shown in FIG. 5.
Referring to the drawings, the casing 11 of the distributor is cast is an aluminum alloy, and includes a peripheral inwardly directed rib 12 the upper surface of which defines a peripheral shoulder 13 at right angles from a base plate 15 (FIG. 2). The base plate 15 is circular, and is formed with a centrally disposed hole 16 through which in use, the cam shaft of the distributor ext ends. The diameter of the base plate 15 is substantially equal to the internal diameter of the casing 11,
and so the plate 15 can be inserted into the casing 11 and will seat on the shoulder 13. Thus the shoulder 13 constitutes a support surface for the base plate 15. In order to retain the base plate 15 in position in the casing 11, the base plate 15 is formed with a pair of radially inwardly extending'slots l7 spaced apart around the periphery of the base plate 15 by 170. Engaged in each of the slots 17 is a respective locking cam member 18 (FIGS.3and 4).
Each of the cam members 18 includes a substantially cylindrical major portion 19 including a mid-portion 21 of reduced diameter. The diameter of the portion 21 is substantially equal to the width of the slots 17 in the base plate 15, and is of axial length substantially equal to the thickness of the plate 15. The diameter of the remainder of the portion 19 of each cam' member 18 is greater than the width of the slots 17, and so the cam members 18 can be inserted into the respective slots 17, theportions 21 of the cam members being received in the slots 17, and the portions of greater diameter at the ends of the portions 21 serving to retain the cam members 18 against axial movement relative to the base plate 15. Since the diameters of the portions 21 are substantially equal to the widths of the slots 17, then the cam members 18 can be rotated relative to the plate 15. The portions 19 of the cam members 18 are each formed with a through bore 22 of hexagonal cross section for receiving an operating tool, for example, an allen key. The portion of each of the members 18 which lies in use beneath the plate 15 is formed with an eccentric cam lobe 23' having a pair of oppositely directed ramp surfaces 24, 25. The ramp surfaces 24, 25 increase in height progressively around the periphery of the member 18 from a minimum height at a pair of diametrically opposite points where the ramp surfaces 24, 25 merge with the portion 19 of the member 18, to a maximum height where the two ramp surfaces 24, 25 merge with one another. In addition, the ramp surfaces 24, 25 increase in height progressively from a minimum at their outer peripheral edge, to a maximum at their roots adjacent the portion 19.
In order to assemble the base plate 15 to the casing 11, the cam members 18 are engaged in their respective slots 17, and are rotated to a position wherein the cam lobes 23 are inwardly directed. The base plate 15 is then inserted into the casing 11, so that the periphery of the base plate 15 seats on the shoulder 13. The cam members 18 are then rotated relative to the plate 15 and the casing 11, so that one or other of the surfaces 24, 25 of the cam members 18 engages the surface 14a on the casing 11. Sufficient force is applied to the cam members 18, when rotating the cam members 18 relative to the plate 15, for the cam action between the surface 14 and the surfaces 24, 25 to clamp the periphery of the base plate 15 firmly against the shoulder 13. In addition to clamping the plate 15 in an axial direction onto the shoulder 13, the action of the cam forms 23 and the surface 14 serves to move the cam members 18 radially with respect to the base plate 15, until the portions 21 of the cam members 18 abuts against the closed ends of the slots 17, whereupon the plate 15 is held against lateral movement relative to the casing 1 I, in addition to being held against axial movement relative to the casing 11. I
The contact breaker assembly of the distributor is mounted on the base plate 15 in a conventional manner, and can of course be assembled to the base plate 15 prior to insertion of the base plate 15 into the casing 11. The cam shaft of the distributor extends through the central hole 16 of the base plate 15, and rotation of the cam shaft in use operates the contact breaker assembly of the distributor in the conventional manner.
It will be appreciated that, although two cam members are preferred, one or more than two cam members could be provided.
I claim:
1. An ignition distributor for a road vehicle, including a hollow casing, a support surface on the interior of the hollow casing, a contact breaker assembly base directed shoulder integral with the casing. 3. A distributor as claimed in claim 1 in which the surface of the casing engaged by the clamping device is defined by part of a peripheral groove in the inner surface of the casing.
4. A distributor as claimed in claim 1 in which there is provided a second clamping device.

Claims (4)

1. An ignition distributor for a road vehicle, including a hollow casing, a support surface on the interior of the hollow casing, a contact breaker assembly base plate engaged with said support surface, a rotatable clamping device, and means rotatably mounting the clamping device on the base plate, the clamping device including an inclined surface engaging the casing, whereby rotation of the clamping device relative tO the base plate and the casing causes the device to clamp the base plate on said support surface.
1. An ignition distributor for a road vehicle, including a hollow casing, a support surface on the interior of the hollow casing, a contact breaker assembly base plate engaged with said support surface, a rotatable clamping device, and means rotatably mounting the clamping device on the base plate, the clamping device including an inclined surface engaging the casing, whereby rotation of the clamping device relative tO the base plate and the casing causes the device to clamp the base plate on said support surface.
2. A distributor as claimed in claim 1 in which said support surface is in the form of a peripheral inwardly directed shoulder integral with the casing.
3. A distributor as claimed in claim 1 in which the surface of the casing engaged by the clamping device is defined by part of a peripheral groove in the inner surface of the casing.
US00164313A 1970-07-23 1971-07-20 Distributor housing and plate assembly with rotatable clamping means Expired - Lifetime US3715531A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3569470A GB1343410A (en) 1970-03-25 1970-07-23 Preparation of l-alpha-hydrazino-beta-phenylpropionic acid compounds

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US3715531A true US3715531A (en) 1973-02-06

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US00164313A Expired - Lifetime US3715531A (en) 1970-07-23 1971-07-20 Distributor housing and plate assembly with rotatable clamping means

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US (1) US3715531A (en)
AU (1) AU457542B2 (en)
DE (1) DE2136430A1 (en)
ES (1) ES171315Y (en)
FR (1) FR2103177A5 (en)
GB (1) GB1335669A (en)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3794795A (en) * 1972-01-15 1974-02-26 Lucas Industries Ltd Ignition distributor housing and resiliently attached distributor base plate
DE2555271A1 (en) * 1975-12-09 1977-06-23 Bosch Gmbh Robert Ignition distributor for IC engine
US4153284A (en) * 1978-03-13 1979-05-08 Dzus Fastener Co. Inc. Pawl latch
US4179144A (en) * 1977-11-21 1979-12-18 Henderson Donald L Removable cover and holder therefor
US4474398A (en) * 1981-06-26 1984-10-02 Westinghouse Electric Corp. Fuel assembly locking apparatus
US4878700A (en) * 1987-07-06 1989-11-07 Siemens Aktiengesellschtaft Cabinet stiffener
US20060248979A1 (en) * 2005-05-04 2006-11-09 The Stanley Works Gate latch
US20140174021A1 (en) * 2012-12-21 2014-06-26 Milgard Manufacturing Incorporated Screen corner attachment

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB554608A (en) * 1900-01-01
US2489775A (en) * 1948-04-14 1949-11-29 Eugene F Haubert Automatic spark advancing and retarding means for distributors
US2515507A (en) * 1947-05-23 1950-07-18 Glitsch Engineering Company Closure clamp
US2546710A (en) * 1947-02-28 1951-03-27 Seth E Aldridge Breaker plate assembly for distributors
US2551408A (en) * 1948-11-30 1951-05-01 Alfred R Amundson Arched turn button
US2671829A (en) * 1949-04-09 1954-03-09 Gen Motors Corp Ignition timer
US2739195A (en) * 1956-03-20 bales
US2889418A (en) * 1957-06-10 1959-06-02 Gen Motors Corp Ignition distributor
US2900678A (en) * 1957-06-04 1959-08-25 Paul S Curtis Turnbutton fastener for frame supported insert section
US3575452A (en) * 1969-04-14 1971-04-20 Minnesota Mining & Mfg Panel latch

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB554608A (en) * 1900-01-01
US2739195A (en) * 1956-03-20 bales
US2546710A (en) * 1947-02-28 1951-03-27 Seth E Aldridge Breaker plate assembly for distributors
US2515507A (en) * 1947-05-23 1950-07-18 Glitsch Engineering Company Closure clamp
US2489775A (en) * 1948-04-14 1949-11-29 Eugene F Haubert Automatic spark advancing and retarding means for distributors
US2551408A (en) * 1948-11-30 1951-05-01 Alfred R Amundson Arched turn button
US2671829A (en) * 1949-04-09 1954-03-09 Gen Motors Corp Ignition timer
US2900678A (en) * 1957-06-04 1959-08-25 Paul S Curtis Turnbutton fastener for frame supported insert section
US2889418A (en) * 1957-06-10 1959-06-02 Gen Motors Corp Ignition distributor
US3575452A (en) * 1969-04-14 1971-04-20 Minnesota Mining & Mfg Panel latch

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3794795A (en) * 1972-01-15 1974-02-26 Lucas Industries Ltd Ignition distributor housing and resiliently attached distributor base plate
DE2555271A1 (en) * 1975-12-09 1977-06-23 Bosch Gmbh Robert Ignition distributor for IC engine
US4179144A (en) * 1977-11-21 1979-12-18 Henderson Donald L Removable cover and holder therefor
US4153284A (en) * 1978-03-13 1979-05-08 Dzus Fastener Co. Inc. Pawl latch
US4474398A (en) * 1981-06-26 1984-10-02 Westinghouse Electric Corp. Fuel assembly locking apparatus
US4878700A (en) * 1987-07-06 1989-11-07 Siemens Aktiengesellschtaft Cabinet stiffener
US20060248979A1 (en) * 2005-05-04 2006-11-09 The Stanley Works Gate latch
US7883124B2 (en) * 2005-05-04 2011-02-08 National Manufacturing Co. Gate latch
US20140174021A1 (en) * 2012-12-21 2014-06-26 Milgard Manufacturing Incorporated Screen corner attachment
US9631417B2 (en) * 2012-12-21 2017-04-25 Milgard Manufacturing Incorporated Screen corner attachment

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Publication number Publication date
GB1335669A (en) 1973-10-31
AU3124971A (en) 1973-01-18
ES171315U (en) 1971-12-16
ES171315Y (en) 1972-07-16
FR2103177A5 (en) 1972-04-07
DE2136430A1 (en) 1972-01-27
AU457542B2 (en) 1975-01-30

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