Improvements in tramway points
Year: 1886

page_text: Date of Application, 3rd Mar., 1886.
Complete Left, 3rd Dec., 1886.
Complete Accepted, 4th Feb., 1887
EDWARD FRANCIS GRAINGE 36 Bromar Road, Denmark Park London Bank
Secretary, do hereby declare the nature of this invention to be as follows:
Improvements in tramway points enabling a Car to open the points, and close
them after passing, during its travel.
The principle adopted is that the points are, all along the route closed to the right:
or "vice versa," so that all tram cars must necessarily branch off one way, unless
the points are opened by the driver, by means of a spring hook attached beneath the
Car, & worked by his foot.
The construction of these points consists in the ntilization of the space beneath
the surface of the rail, into which is fitted a Balance which projects through the
Groove of the line, & remains level with the bearing rail.
The tram wheel on passing over this Balance presses it down which raises a lever
through the inner Guard rail. This lever, if desired by the driver, is caught by the
spring hook attached beneath the Car, and consequently the lever is drawn over by
the moving car, and which forces back a Rod, in the centre of which is a cross loop.
through which works the points, by means of a projecting peg, & turns the points.
The movement of the Rod at the same time turning a Switch at its extreme end,
which raises a sunken plate in the Groove level with the surface.
The tram car after clearing the points, passes over this plate and presses it down
again, which action turns this Switch & forces back the Rod to its original position &
closes the points behind the Car.
The lever on being released by the hook instantly springs back into its former
position.
ED. F. GRAINGE,
36, Bromar Road, Denmark Park,
London, S.E.

page_text: EDWARD FRANCIS GRAINGE 36 Bromar Road Denmark Hill 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 specification consists of self acting Tramway Points enabling the driver of Car
to turn the points during the transit of Car, without the aid of pointsmen.
or
::
The principle adopted is that the points are, all along the route closed to the right,
"vice versa
so that all framears must necessarily branch off one way, unless the
points are opened by the driver of Car, by means of a spring hook (fig. D) attached
beneath the Car & worked by his foot (fig. C).
The construction of these points consists in the utilization of the space beneath the
surface of the rail into which is fitted a lever (fig. A) which projects through the
Groove of the line and remains level with the bearing rail.
The tram wheel on passing over this lever presses it down, which raises a lever
(fig. B) through the inner Guard rail. This lever, if desired by the driver, is caught by
the Spring hook (d) beneath the Car, and consequently drawn over by the moving Car,
& which lever forces back a rod, in the centre of which is a diagonal slot (E)
through which works the point (fig. F) by means of a pin attached to bottom surface
of points, the movement of the Rod at the same time turning a Switch (fig. G) at its
extreme end, which raises a sunken plate in the groove level with the surface. The
trainear after clearing the points passes over this plate & presses it down again,
which action turns the Switch & forces back the Rod to its original position, &
closes the points behind the Car.
The lever (6) on being released by the hook instantly falls back into its former position.
Having now particularly described & ascertained the nature of my said invention
& in what manner the same is to be performed 1 declare that what I claim is
1st. That there are no projecting parts above the level of roadway.
2. No technical mechanism to get out of order.
3. Effectively operated upon by the driver, without interference with his other
duties.