THE WINSLOW BROS. COMPANY.
American Luxfer Prism Co., City.
Dear Sirs:
In answer to your inquiry with reference to the
question of the effect of dust and dirt accumulating on the Prisms in our
factory, which were installed a year ago, we beg to say that a recent
inspection of them shows that the horizontal ledges of the Prisms in all
cases are thickly covered with factory dust in one large room that we
have equipped with the Prisms. It has not affected the amount of light
in any way so far as we can see. The test in one particular room has
been a severe one, as one side of the building is closely in contact with
the casting cleaning room of our foundry, which creates an excessive amount
of impalpable dust from brushing the castings clean every morning.
We purposely allowed the dust to accumulate, as
we wished to severely test the effect of a large amount of dust for a long
period of time accumulating on the Prisms.
Before we equipped this particular room with the
Prisms, a space about 60 feet square, we were burning 15 gas lights the
greater part of the day.
These have all been put out, except on extremely
dark days or late in the afternoon, when a few of them are lighted.
We take pleasure in commending your product to
every class of factory use. It is not only economical so far as the
actual saving in the expense of gas is concerned, but the workmen
themselves are greatly pleased, and seem to be more cheerful under the
improved conditions. We shall be pleased to show this room to any one
you may send.
Your very truly,
THE WINSLOW BROS. CO.,
By W. H. Winslow, President.
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THE ROBERT SIMPSON COMPANY,
Importers of Dry Goods, Wholesale and Retail,
170, 172, 174, 176, 178 Yonge Street,
1 and 3 Queen Street, West.
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Toronto, December 6, 1897.
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Luxfer Prism Co., Toronto.
Gentlemen:
We had Prisms installed in our departmental store
upwards of two years ago. The result was most satisfactory, and we still
think these Prisms are the greatest invention of the age.
We have repeatedly asked as to cleaning the Prisms,
and we may say that we have had no trouble whatever in this regard. We
have found the Prisms much easier to keep clean than ordinary plate glass.
Yours truly,
THE ROBERT SIMPSON CO., Limited.
J. Martin, Secretary.
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