Improvements in Steam-whistles.
Year: 1892

page_text: COMPLETE SPECIFICATION.
Improvements in Steam-whistles.
I, JOHN EINIG, of Jacksonville, in the County of Duval, and State of Florida,
United States of America, Gentleman, 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:-
The invention relates to steam whistles such as shown and described in the
Letters Patent of the United States Nos. 186,718 and 304,511, granted to me
January 30th, 1877, and September 2, 1884, respectively.
The object of the present invention is to provide a new and improved steam
whistle, which is simple and durable in construction, cheap to manufacture, and
arranged to produce a harmonious chord the pitch of which can be regulated
according to the pressure of the motive agent.
The invention consists of a bell held longitudinally adjustable on a fixed web
forming longitudinal chambers of different lengths.
The invention also consists of certain parts and details and combinations of the
same, as will be fully described hereinafter, and then pointed out in the claims.
Reference is to be had to the accompanying drawings, forming a part of this
Specification, in which similar letters of reference indicate corresponding parts in
all the figures.
Figure 1 is a sectional side elevation of the improvement on the line 11 of Fig. 2.
Fig. 2 is a sectional plan view of the same on the line 22 of Fig. 1, and Fig. 3 is a
sectional side elevation of a modified form of the improvement.
The improved steam whistle is provided with the usual nozzle A, formed in the
top at the centre with a threaded opening B, in which screws the screw C, project-
ing from the lower end of the weh D, having a central stem E, of which the
said screw C is a continuation. From the stem E project radially a series of
longitudinally-arranged partitions F F1 F2, connected with each other by transverse
partitions G G G2, located one above the other, as is plainly shown in Fig. 1 so as
to form longitudinal chambers of different lengths in connection with the bell H,
fitted over the web D, the inner surface of the bell engaging the outer edges of the
artitions F F F G G' G²
As shown in the drawings, the transverse partition G connects the longitudinal
partitions F and F2 with each other and is located highest, and the other transverse
artition G2 connects the longitudinal partitions F2 and F with each other and is
he lowest, while the third transverse partition G' connects the partition F with
he partition F and is located about midway between the transverse partitions G²
nd G.
In order to arrange the whistle for different pressures of the motive agent, the
ell H is made longitudinally adjustable relative to the web D, so that the lower
dge of the bell is moved nearer to or farther from the top of the nozzle A,
ccording to the pressure of the motive agent. It is understood that by this longi-
udinal adjustment of the bell H relative to the web D and the nozzle A the

page_text: longitudinal chambers formed by the web within the said bell are increased or
decreased in length according to the downward or upward movement of the bell.
In order to adjust the bell longitudinally, I prefer the construction shown in
Figs. 1 and 2, in which the stem E of the web D is provided at its upper end with
a projection I, formed with screw-threads engaging a nut J, extending through the
cap K of the bell H, the said nut being formed at its lower end with a flange J¹,
engaging the underside of the cap K. On the projecting end of the nut J is
screwed or otherwise secured a nut or collar L, engaging the top of the cap K, so
that the nut J is free to turn within the said cap K. A jam-nut N screws on the
extreme upper end of the threaded projection I to lock the nut J in place after the
bell H is adjusted to the proper position. In order to guide the bell H when
adjusting the same on the fixed web D, a set screw O is provided, screwing in the
said bell and engaging a longitudinal groove F³, formed in one of the partitions F,
F', or F. It will be seen that by loosening the jam-nut N the nut J can be
screwed up or down on the threaded projection I, so that the bell H is adjusted
longitudinally on the web, as the nut J supports the bell. When the desired
position is reached, the jam-uut N is screwed down upon the upper end of the nut J,
so as to lock the latter in place on the threaded projection I. A turning of the
bell H is prevented by the set screw O engaging the longitudinal groove F³. Now
in case the bell H becomes dented through any cause whatever, the said bell can be
conveniently removed by the operator removing the screw O and the jam-nut N
and then turning the nut Joutward to unscrew the same from the projection I.
By this movement the bell H is carried outward without turning as the dent would
prevent turning of the bell by striking one of the partitions F, F, or F2.
As illustrated in Fig. 3, the bell H is held longitudinally adjustable on the web D
by means of an interior screw thread H', formed on the said bell H and screwing
on corresponding threads F and G³, formed on the longitudinal and transverse
partitions F and G, respectively. The nut J and jam-nut N are omitted, and
the cap K of the bell is formed with a fixed knob or handle K', as is plainly
shown in the said figure. The base of the knob K¹ is preferably polygonal,
and is adapted to be engaged by a wrench or other tool for conveniently turning
the bell to raise or lower the same.
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: :-
D
1. A steam-whistle comprising a fixed web and a bell held longitudinally adjust-
able on the said web and forming with the latter longitudinal chambers of different
lengths, substantially as shown and described.
2. A steam-whistle comprising a nozzle, a web secured on the said nozzle and
provided with longitudinal and transverse partitions, and a bell fitted over the said
web and held longitudinally adjustable thereon, substantially as shown and
described.
Dated thin 1941 1
1000
F. W. BARKER,
Applicant's Agent.