IMPROVEMENTS IN BRAKE BLOCKS OR SHOES FOR RAILWAY. VEHICLES
Year: 1882

page_text: LETTERS PATENT to Joseph Heald, of Cardiff, in the County of Glamorgan,
Railway Wagon Buildor and Contractor, for an Invention of "IMPROVEMENTS
IN BRAKE BLOCKS OR SHOES FOR RAILWAY. VEHICLES."
PROVISIONAL SPECIFICATION left by the said Joseph Heald at the Office
of the Commissioners of Patents on the 7th February 1882.
JOSEPH HEALD of Cardiff in the County of Glamorgan, Railway Wagon
Builder and Contractor. "IMPROVEMENTS IN BRAKE BLOCKS OR SHOES FOR
RAILWAY VEHICLES."
My improvements consist of iron brake blocks or shoes, which may bo
substituted for old, broken or worn out wood brake blocks, without altering or
disturbing the hangers and other rods or appliancies. For such purpose I provide
a shoe of wrot or cast metal, at the back of which I connect by-one or two small
cars to each two iron brackets or adjusting rods screwed with lock nuts to the
present used block hangers.
Another method of applying my Invention is by fitting to the inside of existing
or worn wood blocks, an iron shoe with suitable brackets, and guides for securing
in place on the front of such block, with provision for self adjustment and guide
ribs at back for keeping it in one position. My object is to save time and expence
in substitution and time in replacing broken or worn out brake blocks.
SPECIFICATION in pursuance of the conditions of the Letters Patent filed
by the said Joseph Heald in the Great Seal Patent Office on the 28th July
1882.
JOSEPH HEALD of Cardiff in the County of Glamorgan, Railway Wagon
Builder and Contractor. "IMPROVEMENTS IN BRAKE BLOCKS OR SHOES FOR
RAILWAY VEHICLES."
My improvements consist of iron brake blocks or shoes, which may be
substituted for old broken or worn out wood brake blocks, without altering or

page_text: disturbing the hangers, rods, or other appliances. For such purpose I provide a
metal shoe which I either fit inside the old wood block now in use or remove
such block and make the shoe to fit, and bolt to the hanger plate now in use.
Fig. 1. of my Drawings, shows the ordinary wood brake block, much worn with
one method of applying my brake block or shoe, with one ear or snug.
Fig. 2. is another method with two ears or snugs.
Fig. 3. shows the ordinary hanger plate in common use with the wood block
removed and replaced by one of my adjustable brake blocks that may be fixed to
any angle.
Fig. 4. shows same banger to which I secure a screw link adjustable brake block
which may be altered to any angle in a few minutes.
A. A Fig. 1. is the sole or side frame of a wagon or other vehicle, B. Tire of the
wheel. C. the rail D. the hanger now in use, E. the old worn wood brake block.
F. the push lever rod or bar, G. axle, H. Number 1. "brake shoe," which I secure
to the wood brake block by bolt I. At the back of this shoe I provide a rib or
ribs or other equivalent which I fit or link into the front of brake block to keep
it firmly in position, it may have a little liberty at back if desired to swivel on
pin. I. and adjust itself to the rim of tyre of wheel A. B. C. D. E. F. G, and H.
represent similar parts in Figure 2. It will be seen that the shoe H. is secured to a
block plate J. by pins a. a. by two ears or snugs, this block plate is firmly secured
by bolts or screws to wood block E. which is secured again to hanger plate D.
As at present used the wood blocks in both cases are embraced by a flange.
A. B. C. D. F. G. and H. in Fig. 3. represent similar parts as in Figs. 1..2. and 4.
but having bolted to the ordinary hanger plate a metal ratchet and adjustable
push rod, D. is the ordinary block hanger plate, to which is secured knuckle
joint c. and ratchet d.; H. is the brake shoe or block connected thereto by
adjustable snugs e. and f. and push rod g. This brake may be altered and
-adjusted-by-moving the pin o. to any of the holes i. in block d. There is a lug"
or tooth u. which when moved will fit into any of the ratchet teeth v.
As before stated the Figs. 1. 2. 3. and 4. have the same letters of reference to
similar parts but in Figs. 3 and 4. there are knuckle joints c. e and f. h. is a push
rod with adjustable screw j. eyeleted into block k. and secured by bolt 1. Such
bolt . being removed the screw j. may be worked in, or out to adjust the block
or shoe H. to equally embrace wheel tyre B. for braking speed.
I have fully described the several figures herewith as necessary to develope my
Invention but do not confine myself thereto as many variations may be made in
detail without deviating from the principle, but what I claim as secured to me
herein is.
First, The methods of applying shoes to existing brakes of wood, worn or not
as shown in Figures 1. and 2. or any mere modifications of the same substantialy
as and for the purposes hereinbefore set forth.
Second The ratchet adjustable brake as shown in Fig. 3. and the screw link
adjustable brake as shown in Fig. 4. or any mere modification of the saine
substantialy as and for the purposes herein before set forth.
In witness whereof I the said Joseph Heald have hereunto set my hand and
seal this Eighteenth day of July in the year of our Lord One thousand
eight hundred and eighty LWO.