Improvements in and relating to Brakes for Railway Wagons.
Year: 1897

page_text: PROVISIONAL SPECIFICATION.
Improvements in and relating to Brakes for Railway Wagons.
I, HENRY WILLIAMS, of the Railway Appliance Works, Cathcart, Renfrewshire,
Engineer, do hereby declare the nature of my Invention to be as follows:-
This Invention has reference to improvements in and relating to brakes for
railway wagons, and comprises arrangements and combinations of devices for
locking or holding the brakes off, and also holding them on the wheels of the
wagon.
The usual oscillating cross shaft fitted in under-hung. bearings underneath the
frame of wagon, for operating the brakes, would be lengthened so as to be fitted
with actuating levers on both sides of the wagon; and according to my improve-
ments I fit an additional or auxiliary oscillating cross spindle having handles or
hand levers secured on its ends at both sides of the wagon, and this cross spindle
would actuate rack or other devices which through rod connections would act on
main shaft of brake gear to lock or retain same for holding the brakes off or
retaining them on the wheels of the wagon.
This may be effected by having a radial arm secured to brake operating cross
shaft adjustably secured to a connecting rod which has its other end attached to
a bar which slides in guides. This bar would be formed with rack or notched
teeth of saw, hook or other shape and be acted on by a weighted or spring pawl or
pawls mounted on the auxiliary cross spindle, so as to lock the brake shaft in its
positions for off or on action of the brakes. Instead of weighted or spring pawls,
the latter may be rigidly secured to spindle, and the operating handles of spindle be
weighted at each side of wagon, and when duplex pawls are used, the two sets of
teeth on bar may have their notched and solid parts in alternate sequence and one
pawl at a time engage with either set of teeth.
The toothed rack bar may have a plain or notched under surface and be operated
on from below by a pawl lever or cam, and engage with a transverse toothed bar
or projection fitted on the underframing of wagon to hold the brake shaft in locked
position, the rack bar resting in a stepped or undulating frame while in its disen-
gaged positions. Instead of the bar being formed with rack teeth it may be
formed with holes for a projecting pin screwed to underframe of wagon to enter
and secure same in the locking position desired. The rack gearing would prefer:
ably be all covered in by an enclosing box or housing.
In cases where a brake lever is employed on one side of the wagon only, the
disengaging and engaging devices would be the same and operated as before
described from both sides of the wagon, and my improved devices are similarly
applicable where duplex cross shafts may be used one for each set of brake blocks.
Dated the 7th day of January 1897.

page_text: Improvements in and relating to Brakes for Railway Wagons.
0
I, HENRY WILLIAMS, of the Railway Appliance Works, Cathcart, Renfrewshire,
Engineer, do hereby declare the nature of my Invention and in what manner the
same is to be performed to be particularly described and ascertained in and by
the following statement, that is to say:-
This Invention has reference to improvements in and relating to brakes for
railway wagons and comprises arrangements and combinations of devices for
locking or holding the brakes off, and also holding them on the wheels of the
wagon.
And in order that my said Invention and the manner of carrying same into
practice may be properly understood, I have hereunto appended a sheet of
explanatory drawings in which the same reference letters are used to denote
like parts in the several figures where shown.
Figure 1 is a side elevation of a railway wagon as fitted with one arrangement
of my improved brake gear.
Figure 2 is a plan view of the under framing of the wagon, and
Figure 3 is a transverse sectional elevation corresponding to Figure 1.
Figures 4 and 5 are a sectional elevation and plan view respectively of the
operating brake gear, while
Figures 6 and 7 are corresponding views of a slightly modified arrangement.
Referring to these drawings:-
-
The usual oscillating cross shaft A fitted in underhung bearings at A¹ under-
neath the frame of wagon, for operating the brakes, would be lengthened so as to
be fitted with actuating levers A² on both sides of the wagon; and according to
my improvements I fit an additional or auxiliary oscillating cross spindle B
having handles or hand levers B2 secured on its ends at both sides of the wagon,
and this cross spindle B would actuate rack or other devices which through rod
connections would act on main shaft of brake gear to lock or retain same for holding
the brakes off or retaining them on the wheels of the wagon.
This may be effected by having a radial armi C secured to brake operating cross
shaft A adjustably secured such as by a bolt and holes to a connecting rod C₁ which
has its other end attached to a bar C2 which slides in guides c¹ within a housing
frame c.
This bar C2 would be formed with holes at C3 as shown in Figures 4
and 5 or with rack teeth C³ of saw, hook or other shape as shown in Figures 6
and 7 and be acted on by a weighted or spring pawl D or pawls mounted on the
auxiliary cross spindle B so as to lock the brake shaft A in its positions for off
or on actions of the brakes. Instead of weighted or spring pawls 1) the latter may
be rigidly secured to spindle B and the operating handles of spindle be weighted
at each side of wagon, and when duplex pawls are used, the two sets of teeth on
bar may have their notched and solid parts in alternate sequence and one pawl
at a time engage with either set of teeth.
In cases where a brake lever is employed on one side of the wagon only, the
disengaging and engaging devices would be the same and operated as before
described from both sides of the wagon and my improved devices are similarly
applicable where duplex cross shafts may be used one for each set of brake blocks.
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
First. The arrangement and combination of the parts of devices for locking or
holding the brakes on or off the wheels of railway wagons, substantially as herein
described in reference to and shown in the accompanying drawings.

page_text: Second. In connection with brakes for railway wagons, the arrangement and
use of rack and pawl devices for locking the connecting rod to cross shaft of brake
gear, substantially as herein described in reference to and shown in the accom-
panying drawings.
Dated the 7th day of October 1897
W. R. M. THOMSON & Co.,
96 Buchanan Street, Glasgow, Agents.