US3891825A - Lined brake shoes - Google Patents

Lined brake shoes Download PDF

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Publication number
US3891825A
US3891825A US419661A US41966173A US3891825A US 3891825 A US3891825 A US 3891825A US 419661 A US419661 A US 419661A US 41966173 A US41966173 A US 41966173A US 3891825 A US3891825 A US 3891825A
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US
United States
Prior art keywords
shoe
platform
web
friction material
heating
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
US419661A
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English (en)
Inventor
Gethyn James Pritchard
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.)
Girling Ltd
Original Assignee
Girling 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 Girling Ltd filed Critical Girling Ltd
Application granted granted Critical
Publication of US3891825A publication Critical patent/US3891825A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B1/00—Layered products having a non-planar shape
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D69/00—Friction linings; Attachment thereof; Selection of coacting friction substances or surfaces
    • F16D69/04—Attachment of linings
    • F16D69/0416—Attachment of linings specially adapted for curved linings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2475/00—Frictional elements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D69/00—Friction linings; Attachment thereof; Selection of coacting friction substances or surfaces
    • F16D69/04—Attachment of linings
    • F16D2069/0425—Attachment methods or devices
    • F16D2069/045—Bonding
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D69/00—Friction linings; Attachment thereof; Selection of coacting friction substances or surfaces
    • F16D69/04—Attachment of linings
    • F16D2069/0425—Attachment methods or devices
    • F16D2069/0491—Tools, machines, processes

Definitions

  • This invention relates to lined brake shoes and in particular to an improved bonding apparatus for the manufacture of lined brake shoes.
  • a brake shoe has a platform of arcuate form with a web extending from its inner concave surface, the friction material being generally preformed to the shape of the outer convex platform surface, but of short arcuate length. It is known to secure the friction material to the shoe to provide a lined shoe by bonding the material to the shoe under heat and for this purpose it has previously been proposed to use two pairs of individual heating elements one pair being disposed in each side of the web and the elements of each pair being radially spaced apart.
  • the electrical heating elements have heating portions and tail portions, the connections of the tail portions with the supply being safely located within the heating apparatus.
  • the tail portions of the resistor wire within the insulating surround which joins the heating portion to the supply connection has heretofore had to lie along-side part of the shoe web; that part of the web is therefore less-well heated, as is the adjacent platform area, resulting in unreliable and possibly un-safe bonding with large reject quantities.
  • an apparatus for bonding a layer of friction material to the arcuate platform of a brake shoe having a web extending from the concave surface of the platform comprising shoe locating means locating the brake shoe, retaining means for holding a layer of friction material against the platform of the shoe, and a pair of electrical heating elements disposed one on each side of the web of the shoe and each having a heating portion and at least one tail portion connected thereto, wherein the heating portions extend adjacent the web of the shoe along the whole length of the web.
  • an apparatus for bonding a layer of friction material to the convex surface of an arcuate platform of a brake shoe having a web extending from the concave surface of the platform comprising an arcuate recess for receiving the shoe web, locating means for locating the shoe with the web within the recess, retaining means for holding the friction material against the convex surface of the platform, a pair of electrical heating elements disposed one on each side of the recess for heating the shoe web received therein, each heating element having a heating portion and a pair of tail portions, wherein each heating element comprises two radially spaced apart, arcuate runs conforming generally to the arcuate profile of the recess, one pair of adjacent ends of said runs being integrally interconnected by a loop portion and the other, free pair of ends being turned inwardly away from the platform, and wherein the heating portion of each element extends in each run along the whole length of the web.
  • the shoe web may be either single-walled or double walled.
  • FIG. I is an end elevation of the apparatus
  • FIG. 2 is a part section on line II-II of FIG. 1 and FIG. 3 is a pre-formed heating element forming part of the apparatus, and
  • FIG. 4 is a section showing the disposition of the heating element of FIG. 3 within a heat portion of the apparatus.
  • the apparatus comprises a support for the shoe consisting of a heat portion 1 connected to a base portion 2.
  • the head portion 1 comprises a central part 4 sandwiched between a pair of intermediate parts 5 and end parts 6.
  • Central part 4 and each intermediate part 5 have aligned recesses forming radially spaced arcuate channels, 7,7a whilst co-operating intermediate parts 5 and end parts 6 have correspondingly aligned recesses forming radially spaced arcuate channels 8,8a.
  • each intermediate part 5 has an actuate recess for receiving the web 10 of shoe 11, the platform 12 of which is to be lined with a layer of friction material 13.
  • the web 10 may have a single wall as illustrated or a double wall.
  • Locating means are provided for positioning the shoe on the support and, as best seen if FIG. 2, comprise pivoted abutments 14 having first abutment portions I40 for engaging the side edges of the shoe platform to locate the shoe axially on the heat portion 1, clamping portions 14b which clamp the shoe platforms against the head, and second abutment portions Me which engage the side edges of the friction material 13 to centralize it axially of the platform.
  • the pivoted abutments are protruded at the ends of the shoe and are shouldered to locate and acruately centre the layer of friction material relative to the head portion
  • Retention means in the form of a metal strap I7 connected to a travelling platform below base portion 2 holds friction material 13 against the shoe platform 12 during bonding, the platform being moved upon completion of a bonding operation at one intermediate part to an operational position at the other intermediate part.
  • One or more end abutments are provided to locate the shoe relative to head portion 1.
  • Preferably these end abutments are adjustable so that the apparatus can accept shoes having different configurations.
  • the pivoted abutment l4 and the end abutments cooperate to centralise the lining in the head portion 1 whilst permitting offset location of the shoe, whereby to obtain the correct relative arcuate disposition of lining to shoe for the particular brake requirement.
  • Channels 7,7a are interconnected at their terminal portions to receive a heating element 15 (FIG. 3) channels 8,8a are similarly inter-connected to receive a second heating element 15.
  • Each heating element 15 has has its tail portions I6 within a recess 19 formed between head portion 1 and base portion 2. Thus, the tail portions 16, which are cooler than the heating portion 18 of the element, are not aligned with that part of heat portion 1, receiving the shoe web.
  • the element has two radially spaced apart runs 15a 15b joined at one pair of adjacent ends, the other, free ends being turned inwardly away from the platform 12. The two runs 15a 15b permit uniform heating of that part of the head portion 1 aligned therewith and thus of the shoe web and its associated platform.
  • a tail portion of each of the elements could be joined together.
  • the heating portion of one element could be directly joined to that of the other element to provide a unitary structure having only two tail portions, one at each end of the structure.
  • An apparatus for bonding a layer of friction material to a brake shoe including an arcuate platform having a convex surface for receiving said layer of friction material and an opposed concave surface and a web ex tending from said concave surface of said platform, said apparatus comprising shoe support means, means for positioning said shoe on said support means comprising a plurality of abutment members each having a clamping portion arranged to clamp said shoe platform against said support means and an abutment portion for locating said layer of friction material on said platform, retaining means for holding said layer of friction material against said convex surface of said shoe platform, and a pair of electrical heating elements disposed one on each side of said web of the shoe, each heating element having a heating portion and at least one tail portion connected thereto, wherein said heating portions extend adjacent said web of said shoe along the whole length of said web.
  • each of said abutment members includes another abutment portion for locating said shoe on said support.
  • each heating element has a pair of tail portions and comprises two radially spaced apart, arcuate runs conforming generally to the arcuate profile of said recess, one pair of adjacent ends of said runs being integrally interconnected by a loop portion and the other, free pair of ends being turned inwardly away from the platform, and wherein said heating portion of each said element extends in each run along the whole length of said web.
  • An apparatus including means defining a further recess within said apparatus wherein said tail portions of said heating elements are received within said further recess in said apparatus.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Braking Arrangements (AREA)
US419661A 1972-11-28 1973-11-28 Lined brake shoes Expired - Lifetime US3891825A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB5495572A GB1416719A (en) 1972-11-28 1972-11-28 Lined brake shoes

Publications (1)

Publication Number Publication Date
US3891825A true US3891825A (en) 1975-06-24

Family

ID=10472565

Family Applications (1)

Application Number Title Priority Date Filing Date
US419661A Expired - Lifetime US3891825A (en) 1972-11-28 1973-11-28 Lined brake shoes

Country Status (5)

Country Link
US (1) US3891825A (cg-RX-API-DMAC10.html)
JP (1) JPS4995088A (cg-RX-API-DMAC10.html)
DE (1) DE2359304A1 (cg-RX-API-DMAC10.html)
FR (1) FR2215114A5 (cg-RX-API-DMAC10.html)
GB (1) GB1416719A (cg-RX-API-DMAC10.html)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1997008475A1 (de) * 1995-08-31 1997-03-06 Frimatec Ingenieurgesellschaft Mbh Verfahren zum ankleben eines bremsbelags an einen bremsbelagträger
US6399918B1 (en) * 1997-09-08 2002-06-04 Japan Brake Industrial Co., Ltd. Method and apparatus for bonding brake shoe and lining

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2489496A (en) * 1947-11-01 1949-11-29 Gen Motors Corp Brake shoe lining bonding device
US2662960A (en) * 1952-04-04 1953-12-15 Jennings B Williams Machine for bonding and debonding brake shoe linigs

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2489496A (en) * 1947-11-01 1949-11-29 Gen Motors Corp Brake shoe lining bonding device
US2662960A (en) * 1952-04-04 1953-12-15 Jennings B Williams Machine for bonding and debonding brake shoe linigs

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1997008475A1 (de) * 1995-08-31 1997-03-06 Frimatec Ingenieurgesellschaft Mbh Verfahren zum ankleben eines bremsbelags an einen bremsbelagträger
US6399918B1 (en) * 1997-09-08 2002-06-04 Japan Brake Industrial Co., Ltd. Method and apparatus for bonding brake shoe and lining

Also Published As

Publication number Publication date
FR2215114A5 (cg-RX-API-DMAC10.html) 1974-08-19
DE2359304A1 (de) 1974-05-30
JPS4995088A (cg-RX-API-DMAC10.html) 1974-09-10
GB1416719A (en) 1975-12-03

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