Improvements in Whistles.
Year: 1897

page_text: Date of Application, 25th Aug., 1897-Accepted, 9th Oct.,
1897
Improvements in Whistles.
I, JOSEPH HUDSON, trading as J. Hudson & Co., of the Metropolitan Whistle
Works, 11 and 13, Barr Street, Birmingham, in the County of Warwick, Whistle
Manufacturer, 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 Invention relates to that type of whistle where a mouthpiece is arranged
tangentially to a circular chamber having a peripheral aperture adjacent to the
mouthpiece, and having opposite thereto the impinging edge against which the
air is forced and divided for producing sound.
My invention has for its object to produce such a whistle economically and from
two blanks, and consists essentially in providing the under-surface of the mouth-
piece and the peripheral cover of the chamber in one blank or piece.
My invention is illustrated in the accompanying drawings, in which Figures 1
and 4 show the blanks from which a whistle can be manufactured in accordance
with the present invention, while Figures 2 and 3, and Figures 5 and 6 respectively
show in plan and side elevation such blanks formed into shape to constitute the
whistle, while Figures 7 and 8 are respectively side elevation and plan of a whistle
wholly formed.
In carrying my invention into effect as illustrated in the accompanying draw-
ings I pierce or cut a blank A from a sheet of metal or from other material which
may be employed, such blank having ears A A² of circular form which serve to
constitute when bent at right angles to the part A upon the lines a the lateral
faces of the whistle, the parts A1 A2 forming the lateral sides of the chamber.
Similarly the blank B is cut or pierced from a sheet of metal or suitable material
having one extremity B¹ of a width slightly smaller than that of the main piece.
This strip B is bent to a circular form as illustrated in Figures 5 and 6, with its
extremity B left straight and approximately tangential to the circle formed by
the opposite end of the strip. It will be seen that the strip B embraces the edges
of the circular lateral faces A1 A2 of the blank A, and the shoulders V abutt
against the necks of the blank A, and the extremity B of the strip B is embraced
by the lateral faces of the mouthpiece, its diverted extremity B2 projecting immedi-
ately to the edge of the peripheral aperture C, and reducing the aperture through
which the air is forced to impinge upon the oppositely disposed edge 62 of the
cover B. The contiguous edges of the strips A and B may be soldered or
brazed together so as to form air-tight joints, or the edges of the strip B or the
edgs of the strip A may be inturned to secure the one to the other without that
necessity.
Having now particularly described and ascertained the nature of my said
invention, and in what manner the same is to be performed, I declare that what I
claim is:-

page_text: chamber or body and the under face of its mouthpiece are formed of one strip of
metal or material, substantially as hereinbefore described.
2. The manufacture of a whistle of the type as hereinbefore described in two
pieces or parts, substantially as hereinbefore described.
MARKS & CLERK,
18, Southampton Buildings, London, W.C., and
13, Temple Street, Birmingham, Agents for the Applicant.