GB2291943A

GB2291943A - Bicycle brake adjuster

Info

Publication number: GB2291943A
Application number: GB9415171A
Authority: GB
Inventors: Ross Dudley King
Original assignee: Individual
Current assignee: Individual
Priority date: 1994-07-27
Filing date: 1994-07-27
Publication date: 1996-02-07
Also published as: GB9415171D0

Abstract

A bicycle brake adjuster comprises a template, moulded with a T-shaped raised ridge, 3 and 4, which adjoins two stepped areas 5 and 6. In use, the adjuster is placed between the wheel rim and brake block of a mountain bike (figure 2), in order to correctly set the angle of the brake block, thus eliminating squealing on braking. <IMAGE>

Description

BICYCLE BRAKE ADJUSTER This invention relates to braking systems, particularly for mountain bikes.

In order for mountain bike brakes to work efficiently, the face of the brake blocks have to connect with the braking surface of the wheel rim, whereby the two faces must meet square with each other. However, when the brake block connects with the wheel rim, squealing often occurs, and is particularly annoying when negotiating steep downhills, when brakes are applied for long periods.

To eliminate this squealing, the brake blocks need to be adjusted so that the front end (toe end) of the brake block hits the wheel rim slightly before the rear end (heel end) of the brake block. This is usually achieved by a process of trial and error - adjusting the angle of the brake block - test riding the bike and adjusting again until the desired position of the block is achieved.

According to this invention, a bicycle accessory comprising a template for location between a brake block and the braking surface of a wheel rim, for setting a desired angle of the brake blocks, to eliminate squealing when braking, comprising a substantially rectangular plate having a raised ridge extending across one end thereof and a stepped area alongside said ridge on which the surface of the brake block is placed with the forward end of said brake block abutting said ridge, A specific embodiment of the invention will now be described by way of example with reference to the accompanying drawings in which: Figure 1 shows the template.

Figure 2 illustrates the plan elevation of the template placed between the wheel rim and the brake block.

Figure 3 illustrates the front elevation of the template placed between the wheel rim and the brake block.

Referring to the drawing, Figure 1 the template is rectangular and comprises areas 1 and 2, which are separate by a raised central ridge, 3, which meets at right angles another raised ridge, 4, which extends across one end of the template. Areas 1 and 2 are raised at said one end to provide stepped areas 5 and 6, which adjoin the raised ridge 4. Areas 5 and 6 have the symbol X embossed on them, whilst area 1 has the word "right" and the symbol - > embossed on it, and area 2 has the word "left" and the symbol - > embossed on it.

In order to use the template correctly, the underside, 7, needs to be placed flat against the braking surface of the wheel rim,8, with the two symbols - > pointing towards the front of the bike, Figures 2 and 3. The braking surface of the brake block,9, is placed on the template area 1, with the heel of the block positioned over the step, 5, and butted up against the ridge, 4.

The block is then tightened up in the usual way. The template is then removed from between the wheel rim and the black and the process is reversed for the block on the other side of the wheel, using areas 2 and 6, instead of areas 1 and 5.

Claims

CLAIM

1 A bicycle accessory comprising a template for location between a brake block and the braking surface of a wheel rim, for setting a desired angle of the brake blocks to eliminate squealing when braking, comprising a substantially rectangular plate having a raised ridge extending across one end thereof and a stepped area alongside said ridge on which the surface of the brake block is placed with the forward end of said brake block abutting said ridge.

2 An accessory according to claim 1, wherein the plate has a further central ridge extending over its length to provide two template areas, one for each side of the wheel.

3 A bicycle accessory constructed, arranged and adapted for use substantially or herein before described and shown in the accompanying drawings.