Improvements in the Frames of Bogie Trucks for Railway Wagons and Carriages.
Year: 1893

page_text: Date of Application, 11th Apr., 1893
Complete Specification Left, 15th Sept., 1893-Accepted, 21st Oct., 1893
PROVISIONAL SPECIFICATION.
Improvements in the Frames of Bogie Trucks for Railway Wagons
and Carriages.
We GEORGE EARL CHURCH, Civil Engineer of Dashwood House, London, E.C.
and GEORGE WATSON ETTENGER, Mechanical Engineer, of 12 Church Street,
Barrow-in-Furness, England do hereby declare the nature of this invention to be as
follows:-
This invention relates to that construction of bogie trucks in which the frames
are made of diamond shape, that is to say in which two arch bars are fixed by bolts
to the upper and lower ends of vertical struts secured to the sides of the transverse
bearer, bolster or bottom pivot bearing carrier of the bogie frame, the said bars
being bent together approximately to a diamond shape at each end beyond the
transverse bearer and having their ends fixed to the top sides of the axle boxes
while second tie bar extends from the underside of the transverse bearers to the
undersides of the axle boxes.
According to one of our present improvements we extend the top arch bar at each
end some distance beyond the axle box, and we form thereon an eye for the
reception of the bearing bar of the brake rigging; we construct such bearing bar
by preference of tubular or other hollow form for affording considerable strength,
the ends of the tube being made to fit upon corresponding annular projections round
the said eyes of the arch bar and secured in such position by a tie bolt passing
through the tube and secured with screw nuts on the outer sides of the eyes. The
said eyes have lugs on the outer sides through holes in which pass the threaded
ends of struts that extend in an upward slanting direction from the underside of the
axle boxes, thus forming with the extension of the upper arch bar a strong bracket
projecting from the side of the axle box for carrying the said tubular bearer and its
brake gear, and for withstanding the thrust of the brake shoes.
The said strut has nuts screwed upon it on each side of the lug of the upper arch
bar extension, so that by adjusting these nuts the position of the tubular bearing
bar can be accurately adjusted.
The before mentioned struts or distance pieces on each side of the transverse
bearer or bolster, to which the upper and lower arch bars are attached, are
constructed tubular and are secured as follows.
Embossed washers are fitted as saddle pieces on the inner surfaces of the arch
bars so as to overlap the edges thereof and upon the circular bosses of these fit the
ends of the tubular struts or distance pieces, and through these, the washers and
the arch bars, are then passed tie bolts securing these parts firmly together.
The tubular struts are also securely attached to the transverse bearer by fitting
tubular sleeves on the struts which sleeves have lateral flanges that are bolted to
the sides of the transverse bearer.
The transverse bearer, bolster or bottom pivot bearing carrier is made either as
a rivetted girder or of other shaped metal, or of timber, the flanges of the before
mentioned strut sleeves or binders being fastened to the web of such bearer in such
a way as to allow of the necessary vertical play of the bearer with the action of the
bearing springs. By this arrangement the strains received in moving over the line
are distributed among the several members instead of being withstood by a single
one as is usually the case.
Dated this 11th day of April 1893.
ABEL & IMKAI,
Agents for the Applicants.

page_text: COMPLETE SPECIFICATION.
Improvements in the Frames of Bogie Trucks for Railway Wagons
and Carriages.
We GEORGE EARL CHURCH, Civil Engineer, of Dashwood House, London, E.C.
and GEORGE WATSON ETTENGER, Mechanical Engineer, of 12 Church Street,
Barrow-in-Furness 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 :-
This invention relates to that construction of bogie trucks in which the frames
are made of diamond shape, that is to say in which two arch bars are fixed by bolts
to the upper and lower ends of vertical struts secured to the sides of the transverse
bearer, bolster or bottom pivot bearing carrier of the bogie frame, the said bars
being bent together approximately to a diamond shape at each end beyond the
transverse bearer and having their ends fixed to the top sides of the axle boxes
while a second tie bar extends from the underside of the transverse bearers to the
undersides of the axle boxes.
According to one of our present improvements we extend the top arch bar at
each end and some distance beyond the axle box, and we form thereon an eye for
the reception of the bearing bar of the brake rigging; we construct such bearing
bar by preference of tubular or other hollow form for affording considerable
strength, the ends of the tubes being made to fit upon corresponding annular
projections, round the said eyes of the arch bar and secured in such position by a
tie bolt passing through the tube and secured with screw nuts on the outer sides of
the eyes. The said eyes have lugs on the outer sides through holes in which
the threaded ends of struts that extend in an upward slanting direction from the
underside of the axle boxes, thus forming with the extension of the upper arch bar
a strong bracket projecting from the side of the axle box for carrying the said
tubular bearer and its break gear, and for withstanding the thrust of the brake
shoes.
pass
The said strut has nuts screwed upon it on each side of the lug of the upper arch
bar extension so that by adjusting these nuts.the position of the tubular bearing
bar can be accurately adjusted.
The before mentioned struts or distance pieces on each side of the transverse
bearer or bolster, to which the upper and lower arch bars are attached are
constructed tubular and are secured as follows:-
Embossed washers are fitted as saddle pieces on the inner surfaces of the arch
bars so as to overlap the edges thereof and upon the circular bosses of these fit the
ends of the tubular struts or distance pieces, and through these the washers and
the arch bars, are then passed tie bolts securing these parts firmly together. The
tubular struts are also securely attached to the transverse bearer by fitting tubular
sleeves on the struts which sleeves have lateral flanges that are bolted to the sides
of the transverse bearer.
The transverse bearer, bolster or bottom pivot bearing carrier is made either as
a rivetted girder or of other shaped metal, or of timber, the flanges of the before
mentioned strut sleeves or binders being fastened to the web of such bearer in such
a way as to allow of the necessary vertical play of the bearer with the action of the
bearing springs. By this arrangement the strains received in moving over the line
are distributed among the several members instead of being withstood by a single
one as is usually the case.
The above described improvements are shewn on the accompanying drawings.
The bogie truck shewn in plan and side view Figs. 1 and 2 and in enlarged
detail views at Figs. 3 to 8 is of the kind in which the frames are of the kind known
as diamond frames consisting of upper and lower arch bars T. T¹ secured at the 5
middle to a transverse bearer or bolster carrying the pivot, and at the ends of the

page_text: axle boxes. According to our present invention the upper and lower arch bars T. T¹
are secured together by tubular distance pieces or struts U and tie bolts on each
side of the transverse bearer Z at the middle of the frame, the ends of both bars
being brought together at the top of the axle boxes while a third bar V also secured
to the bottom of the struts U has its ends secured on the under sides of the axle
boxes by the tie bolts that secure the upper bars T. The bar T is according to our
invention extended at T2 some distance beyond the axle boxes and is formed with
eyes T³ for the reception of the bearing bar W of the brake rigging. This bar
is constructed of a tubular form for affording strength and rigidity, the ends of the
tube being made to fit on to corresponding annular projections T formed round the
eyes of the bar T as shewn more clearly in enlarged end view, side view and
sectional plan of these parts respectively at Figs. 3, 4 and 5 and they are fixed in
this position by tie bolts X passing through the tubes and eyes and secured by
screw nuts.
The eyes T3 have furthermore inclined lugs T on their outer sides through holes
in which pass the threaded ends of struts Y that extend in an upward slanting
direction from the outer tie bolt of the axle box beneath the bar V, thus forming
with the extension T2 of the arch bar T, a strong bracket projecting from the side
of the axle box for carrying the said tubular bearer and the part of the brake gear
suspended therefrom and for withstanding the thrust of the brake shoes.
The strut Y has nuts Y¹ above and below the lug T5 so that by the adjustment
of these nuts the position of the bar W can be accurately adjusted.
The tubular distance pieces or struts U are situated on each side of the transverse
bearer or bolster Z that carries the truck pivot to which bearer and to the bars T T'
they are connected as shewn more clearly in sectional front view at Fig. 6 sectional
side view at Fig. 7 and sectional plan at Fig. 8.
Embossed washers a are fitted on the inner surfaces of the bars T T' which they
overlap by means of a flange as shewn at Fig. 7 and over the circular bosses of
these washers fit the ends of the struts U, the tie bolts being passed through the
struts, the washers and the top and bottom bars thus securing the whole firmly
together.
On the struts U are fitted tubular sleeves c. c', the upper sleeves c being capable
of sliding on the struts.
These sleeves are formed with projecting pieces or lugs 2 which bear against the
side surfaces of the transverse bearer or bolster Z and are fixed securely thereto by
bolts d. The lower sleeves c¹ are also secured by flange pieces e³ to the sides of the
bottom transverse bearer or spring blank Z', between which and the upper bearer
or bolster Z are placed bearing springs Fig. 2 in the usual manner.
Thus when the transverse bearer Z is subject to vertical play on the bearing
springs in running, the sleeves c in sliding on the struts afford perfect freedom to
such motion, and the strains received in moving over the line are distributed among
the several members, instead of being withstood by a single one, as is usually
the case.
The transverse bearer or bolster Z is according to our invention constructed as a
box girder, as shewn, thus combining great strength with lightness. The spring
plank Z is of a trough shaped section.
Having now particularly described and ascertained the nature of this inven-
tion and in what manner the same is to be performed, we declare that what we
claim is:-
1. Constructing the bogie truck frames of upper and lower bars secured to
tubular struts on each side of the transverse bearer by means of embossed and
flanged washers and tie bolts, the tubular struts being provided with sliding sleeves
fixed respectively to the transverse bearer or bolster and the spring plank, so that
the bearer is free to move up and down upon the struts as guides substantially as
described.
2. In a bogie truck frame forming the upper arch bar with extensions beyond

page_text: the axle boxes, supported by screwed struts from the underside of the axle box and
provided with bosses for the reception of the tubular bearing bar of the break beam,
substantially as described.
3. In the bogie truck referred to in the preceding claims constructing the bearing
bar for the brake gear as a tube fitting with its ends over projections on the
extensions of the arch bar and secured by a tie bolt substantially as described.
4. The improved construction of bogie trucks combined and arranged as herein
described.
Dated this 15th dev of Santambor 1902
ABEL & IMRAY,
Agents for the Applicants.