2014 · Hayward · "Pavement Lights" · Page 4

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2014 · Hayward · "Pavement Lights" · Page 4
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4	A.D. 1871. -- Nº 2014.	Specification
Hayward's Improvements in Pavement Lights.

    In these recesses pieces of glass marked a, a, moulded to fit in the recesses and of a peculiar form are set.

    Figure 2 is a side view of one of these pieces of glass; Figure 3 is a front view, and Figure 4 a plan of the same; Figure 5 is a vertical section (taken on the line 1, 1, Figure 4); and Figure 6 is a horizontal section taken on the line 2, 2, of Figure 5. The iron frame is also shewn in section in Figure 3.

    The inclined face a¹ of the glass a intercepts a large proportion of the light descending through the glass, and it reflects the whole or nearly the whole of the light thus falling upon it into the room. The opposite face a² which is towards the room is so formed not to throw back the light, and so by far the larger proportion of the light falling on the face of the glass, and passing through it is directed into the room, whereas other pavement lights and deck lights allow of an equal distribution of the light in all directions.

    Figures 7 shew a modification of the form shewn at Figures 2 to 6, the principle however remaining the same, that is to say, one side of the prism is considerably inclined, and the other, which faces the room, is vertical or nearly so, by which arrangement the larger proportion of the light is directed into the room.

    The form shewn in Figures 2 to 6 throws the light more directly forward than the form shewn by Figures 7.

    Figures 8 shew a glass which is rectangular on the face, but in other respects is similar to that shewn at Figures 2 to 6.

    What I claim is the construction of pavement lights, substantially as described.

In witness thereof, I, the said Edward Lambert Hayward, have hereunto set my hand and seal, this Twenty-ninth day of January, in the year of our Lord One thousand eight hundred and seventy-two.

EDWARD LAMBERT HAYWARD. (L.S.)

LONDON:
Printed by GEORGE EDWARD EYRE and WILLIAM SPOTTISWOODE,
Printers to the Queen's most Excellent Majesty. 1872.