Improvements in Car Trucks.
Year: 1890

page_text: Date of Application, 13th Aug., 1890
Complete Specification Left, 13th May, 1891-Accepted, 13th June, 1891
PROVISIONAL
Improvements in Car Trucks.
I, JOHN PITT BAYLY, of 18 Fulham Place, Paddington, in the County of
London, Patent Agent, do hereby declare the nature of this invention (a communi-
cation to me from abroad by Philip Williams, of Decatur, Illinois, U.S.A. Inventor,)
to be as follows:-
:-
This invention has reference to certain new and useful mechanism whereby car
trucks and the like are rendered capable of better turning round sharp curves than
heretofore.
By this invention the axles upon which are mounted the wheels, are made in two
sections of equal length. The ends of the axles nearest the wheels are journalled
in bearings in the usual manner, but are free to oscillate therein. The longer ends
are journalled in rollers arranged at right angles thereto, and these rollers are
journalled in opposite edges of suitable plates pivoted centrally to the truck
frame.
By this construction, when the car is turning a sharp curve the axles and the
wheels will curve by reason of the turning of the plates in which the two longer
ends of the axles are journalled.
T
ديد
101 1
f
1000
J. P. BAYLY,
Applicant.
COMPLETE SPECIFICATION.
Improvements in Car Trucks.
I, JOHN PITT BAYLY, of 18 Fulham Place, Paddington, in the County of
London, Patent Agent, do hereby declare the nature of this invention (a communi-
cation to me from abroad by Philip Williams, of Decatur, Illinois, U.S.A. Inventor,)
and in what manner the same is to be performed, to be particularly described and
ascertained in and by the following statement:-
My invention relates more particularly to trucks for cars used on street-
railways.
My object is to enable the cars to run easily around curves and make switches
accurately. I attain my object by means of the details of construction and com-
binations of parts, hereinafter set forth and claimed.
In the drawings accompanying and forming a part of this Specification,
Figure 1 is a plan of a truck frame embodying my invention.
Fig. 2 is a sectional plan of a pivot block, and
Fig. 3 is a horizontal plan of such block.
The frame a may be of any suitable construction, and it is provided with axle-
bearings bbbb. Midway between wheels is block c, pivoted on bolt m and
A bar dis suitably
having independent pivotal bearings for axles h and h
secured to the block, and it extends in both directions, forward and backward.
similar block e pivots on bolt m¹ midway between wheels e and e', and it provides
independent pivotal bearings for axles
Bar dis connected with block c',
and y'.
g
and it extends to the end of the truck and connects at the centre of the truck with
bar d. The bar d has the slot k and the bar d' has the bolt that extends through
the slot or bar d and forms a sliding connection between the two bars. The bearings
for the axles are shown at i in Figs. 2 and 3, and they are the same in both blocks
and in the sides of the truck.

page_text: Suitable connections are to be made with bars d and d' at both ends of the truck,
and the operation of the device consists simply in swinging said bars to one side or
the other, as shown in Fig. 1in which figure the car is assumed to be going toward
the top of the paper and curving toward the left. It will be seen that the position
of the wheels is such that the car would make the turn without the guidance of the
rails, thereby obviating friction, and the same adjustment would compel the car to
make a switch to the left. A contrary adjustment of the bars will turn the car in
an opposite direction, as will be readily apparent.
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 :
The car-truck comprising the central pivotal blocks having the pivotal bearings,
the axles journalled in the blocks and in the sides of the truck, and the bars dd,
secured to the blocks and connected together, as set forth.
Dated this 13th day of May 1891.
J. P. BAYLY,
Applicant.
J. P. BAYLY,
Applicant.