US 357469 A
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0. A. DAVIS.
STEAM FOG HORN.
No. 357,469. Patented Feb. 8', 1887.
l' gg 9///// HNvEN-r 13R- NITED STATES PATENT O FICE.
I CORNELIUS A. DAVIS, OF SOMERSET, MASSACHUSETTS.
SPEQIPICATION forming part. of Letters Patent No. 357,469, dated February 8, 1887.
Application filed October 19, 1886. Serial No. 216,611. (No model.)
T0 aZZ whom it may concern:
Be it known that I, CORNELIUS A. DAVIS, of Somerset, in the county of Bristol and State of Massachusetts, have invented certain Improvements in Steam Fog-Horns, of which the following is a specification.
In the drawings forming a part hereof, Figare I is an exterior side view of the improved fog-horn with a portion of the mouth thereof broken away. Fig. II is a longitudinal section ofa portion of the invention. Fig. III is a cross-section of the fog-horn, taken on the dotted line so 00, Fig. II. Fig. IV isa rear end View of Fig. II.
Similar letters of reference indicate similar parts in all the-figures.
In the said drawings, A is the mouth-piece, a portion only of which is shown. The inner end of the mouth-piece is provided with an interiorly-threaded couplingscrew, B, whereby it is attached to one end of the steam-reservoir G. The other end of the reservoir is covered with a cap, D, in which is inserted the steam-pipe a, which leads from a steamboiler. (Not shown.)
E is a throat-piece, which projects from a disk, b, screwed into the couplingscrew 13. (See Fig. II.) The throat-piece in itself embodies no inventiofi, but corresponds very nearlyin shape with others now commonly in use.
F is a tongue, which consists of a curved metallic plate corresponding in shape with the open side of the throatpiece. This tongue is inserted in the disk I) and held therein by means of the offsets c 0. (See Fig. IV.)
Gisa clamp placed over the throatpiece and tongue to hold them together.
The adj usting'of the tongue is accomplished by means of a set-screw, d. (Shown in Figs. II and III.) The curvature of the tongue is such as to give a greater steam-opening than is required, and the clamp G is afterward set up to effect the proper width of steam-aperture. The tone of the horn can be changed by moving the clamp longitudinally of the tongue and throat-piece, as by altering the length of the projecting or unsecured portion of the tongue the number of its vibrations, when acted on by the steam, is changed.
A small pipe, e, is used to carry 05 condensed steam from the steam-reservoir.
I claim as my invention In a fog-horn, the combination of the steamreservoir 0, steam-supply pipe at, water-discharge pipe e, and mouth-piece A, theinner end of which mouth-piece is provided with the disk I), throat-piece E, tongue F, and clamp G, substantially as and for the purpose specified.
, CORNELIUS A. DAVIS. Witnesses:
JAMES F. GARDNER, Jos. T. DAVIS.