US4541A - Combining the steam-whistle with the safety-valve - Google Patents

Combining the steam-whistle with the safety-valve Download PDF

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US4541A
US4541A US4541DA US4541A US 4541 A US4541 A US 4541A US 4541D A US4541D A US 4541DA US 4541 A US4541 A US 4541A
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valve
whistle
steam
safety
combining
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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01LMEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L19/00Details of, or accessories for, apparatus for measuring steady or quasi-steady pressure of a fluent medium insofar as such details or accessories are not special to particular types of pressure gauges
    • G01L19/08Means for indicating or recording, e.g. for remote indication
    • G01L19/12Alarms or signals

Description

N-FETERS. PHOTO-LITHOGRAPMER WASHINGTON D c UNITED STATES PATENT GITFICE. l

MATTHIAS W. BALDWIN, OF PHILADELPHIA, PENNSYLVANIA.

COMBININ G- THE STEAM-WHISTLE WITH THE SAFETY-VALVE.

Specification of Letters Patent No. 4,541, dated May 28, 1846.

To all whom t may concerny Be it known that I, MATTHIAS IV. BALD- WIN, engineer and machinist, of the city of Philadelphia, in the State of Pennsylvania, have made a new and useful improvement in the manner of operating the lsteam-whistle of a locomotive steam-engine by connecting and combining it with the ordinary safetyvalve; and I do hereby declare that the following is a full and exact description thereof.

In the accompanying drawing Figure 1 is an elevation of a dome, safety valve, and steam whistle; and Fig. 2 a vertical section thereof through the dome.

A is the dome, and B the steam whistle which is made in the ordinary manner.

C is the main valve seat of the steam valve a; b is the lever of said valve.

The stem and body of the valve a are made hollow and at the lower end thereof there is a puppet valve c opening downward which valve I denominate the whistle valve;

Z is the stem of said valve; e is a lever' which is attached to the stem of the whistle valve,

and by means of which, or of any equivalent device, said valve may be forced down.

Having thus fully described the nature of my improvement in the manner of operating the steam whistle of a locomotive steam engine, what I claim therein as new and desire to secure by Letters Patent is- The manner in which I have combined the main valve and the whistle, and arranged the respective parts for operating said whistle by making a perforation through the safety valve and its stem, there being a valve closing the lower end of said opening, which valve is to be operated upon and the respective parts arranged substantially as herein described.

M. W. BALDWIN.

IVitnesses:

E. I/V. C. GREENE, JOHN A. WHITE.

US4541D Combining the steam-whistle with the safety-valve Expired - Lifetime US4541A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20040236368A1 (en) * 2003-04-29 2004-11-25 Mcguckin James F. Distal protection device
US20150148846A1 (en) * 2004-11-10 2015-05-28 Roger P. Jackson Polyaxial bone screw with helically wound capture connection

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20040236368A1 (en) * 2003-04-29 2004-11-25 Mcguckin James F. Distal protection device
US20150148846A1 (en) * 2004-11-10 2015-05-28 Roger P. Jackson Polyaxial bone screw with helically wound capture connection

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