Improved Means of Adjusting the Brake Shoes of Vehicles.
Year: 1894

page_text: Date of Application, 8th Jan., 1894
Complete Specification Left, 4th Oct. 1894-Accepted, 10th Nov., 1894
PROVISIONAL SPECIFICATION.
Improved Means of Adjusting the Brake Shoes of Vehicles.
I, JEAN BAPTISTE SERRE of 22 Avenue du Midi, Limoges, (Haute Vienne)
France, Veterinary Surgeon, do hereby declare the nature of this invention to be
as follows:-
My invention consists of improved means of adjusting the brake shoes of vehicles,
which allows of placing the brake shoes in exact position with regard to the felloes
or tyres of the wheels.
The said means are of extreme simplicity and the durability of the adjusting
device is equal to that of the vehicle to which it is applied and its strength is
completely assured. It dispenses permanently with the necessity of frequent
adjustment of the mechanism of the brake and ensures regular and complete wear
of the brake shoe. By its use the noise occasioned by friction is sensibly
diminished and the jolting produced when a brake shoe is partly or irregularly
applied is avoided. My brake shoe cannot wear the paint or the wood of the
felloe.
For the purpose of my invention I screw upon a threaded rod of the brake
mechanism an internally threaded sleeve, the exterior surface of which is of
truncated pyramidal form having a collar or shoulder at its inner end. The screw
sleeve serves as a coupling sleeve for the brake shoe which is adjusted upon the
said screw sleeve and is maintained in place by a lock nut.
This screw coupling-sleeve is applied as follows:-If a brake shoe is placed too
much towards either the inside or the outside of the tyre of the wheel the lock nut
is unscrewed and the brake shoe is drawn off which is accomplished the more easily as
the screw coupling sleeve is square and slightly conical from its inner end outwards.
The screw coupling sleeve is then, according to requirement turned from left to
right or vice versa to the extent of 1,1 or of a turn, or of one or several complete
turns upon the threaded rod until the brake shoe, upon being replaced is presented
in proper position to the tyre of the wheel.
The absolute stability of the brake shoe is assured at its outer end by the lock
nut and at its inner end by its pressure upon the shoulder of the screw coupling
sleeve. The length of the latter (in the transverse sense) is a little less than the
width of the brake shoe, so that the pressure of the lock nut is effected against
the side face of the brake shoe which is firmly maintained upon its square
adjuster.
Another advantage of my invention is that if the mechanism of the brake
becomes loosened and even the locking nut is not quite tightened the brake shoe
will never be sufficiently free to occasion the disagreeable noise which is produced
under similar circumstances with the ordinary systems; further the brake shoe can
never get out of position so as to rub with its upper part against the tyre of the
wheel.
ليم
1
1004

page_text: I, JEAN BAPTISTE SERRE of 22 Avenue du Midi, Limoges, (Haute Vienne)
France, Veterinary Surgeon, do hereby declare the nature of this invention and
in what manner the same is to be performed, to be particularly described and
ascertained in and by the following statement :-
My invention consists of improved means of adjusting the brake shoes of vehicles,
which allows of placing the brake shoes in exact position with regard to the felloes
or tyres of the wheels.
The said means are of extreme simplicity and the durability of the adjusting
device is equal to that of the vehicle to which it is applied and its strength is
completely assured. It dispenses permanently with the necessity of frequent
adjustment of the mechanism of the brake and ensures regular and complete wear
of the brake shoe. By its use the noise occasioned by friction is sensibly
diminished and the jolting produced when a brake shoe is partly or irregularly
applied is avoided. My brake shoe cannot wear the paint or the wood of the
felloe.
The accompanying drawings will serve to illustrate my invention.
Figure 1 is a front elevation showing the brake shoe secured upon a threaded
rod of the brake mechanism.
Figure 2 is a separate view of this threaded rod.
Figures 3, 4 and 5 are respectively a side view, an end view and a section of
the screw threaded sleeve hereinafter described which constitutes the adjusting
device.
For the purpose of my invention I screw upon the threaded rod A of the brake
mechanism an internally threaded sleeve R, the exterior surface of which is of
truncated pyramidal form having a collar or shoulder S at its inner end. The
screw sleeve R serves as a coupling sleeve for the brake shoe P which is adjusted
upon the said screw sleeve and is maintained in place by a lock nut E.
This screw coupling sleeve is applied and adjusted as follows:-If the brake
shoe P is placed too much towards either the inside or the outside of the tyre of
the wheel the lock nut E is unscrewed and the brake shoe is drawn off which is
accomplished the more easily as the screw coupling sleeve R is square and slightly
conical from its inner end outwards. The screw coupling sleeve is then, according
to requirement, turned from left to right or vice versa to the extent of, or of
a turn, or of one or several complete turns upon the threaded rod A until the
brake shoe upon being replaced is presented in proper position to the tyre of the
wheel.
The absolute stability of the brake shoe is assured at its outer end by the lock
nut E and at its inner end by its pressure upon the shoulder S of the sleeve R.
The length of the latter (in the transverse direction) is a little less than the width
of the brake shoe, so that the pressure of the lock nut E is applied against
the side face of the brake shoe which is firmly maintained upon its square
adjuster.
Another advantage of my invention is that if the mechanism of the brake
becomes loosened and even if the nut E is not screwed up quite tight the brake
sboe will never be sufficiently free to occasion the disagreeable noise which is
produced under similar circumstances with the ordinary systems; further the brake
shoe can never get out of position so as to rub with its upper part against the tyre
of the wheel.

page_text: Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed, I declare that what I
claim is :-
For the purpose of adjusting the brake shoes of vehicles, an internally threaded
pyramidal sleeve screwed upon a threaded rod of the brake mechanism and adapted
to receive the shoe which is secured thereon by a lock nut, substantially as herein-
before described.
Dated this 4th day of October 1894
J. C. MEWBURN & ELLIS,
55 and 56, Chancery Lane, London, Patent Agents.