US745317A - High or low water alarm. - Google Patents

Description

PATENT-ED DEC. 1, 1903.

R. G. BLAKE. HIGH 0R Low W'ATAR ALARM.

APPLICATION FILED SEPT. 20, 1902'.

lOv MODEL.

. Wa'rz/s ses @MM y? WW UNITED STATES Patented December 1, 1903 v RICHARD C. BLAKE, OF CINCINNATI, OHIO.

HleH 0R Low WATER ALARM.

SPECIFICATION forming part 0f Letters Patent No. 745,317',

dated December 1,1903.

Application iiled September 29. 1902. Serial No. 125,190. (No model.)

To all whom Be it known it may concern:

that I, RICHARD C. BLAKE, a

citizen ofthe United States of America, and a resident ot' Cincinnati, county of Hamilton, State of Ohio, have invented certain new and useful Improvements in IIigh and Low Vater Alarms, of which the following is a specification.

The object of my invention is to simplify the construction of alarms for indicating that the water in the boiler has reached either the high or low water limit.

In the accompanying ,drawings I have illustrated awater-alarm embodying inyinvention.

Figure l shows a boiler in longitudinal section with a water-column attached to the end thereof, being shown partly in section and partly in elevation to expose the float which actuates the valve of my water-alarm, which is shown secured to the column in elevation, the index-hand secured to the end of the valvestem being shown broken off. Fig. 2 is a view of the alarm embodying my invention similar to Fig. l, but upon an enlarged scale and showing the indicator in elevation. Fig. 3 is a top plan view of the alarm embodying my invention upon an enlarged scale. Fig. 4 is a vertical sectional view of the same, taken upon line .fr m, Fig. 3. Fig. 5 is a sectional view taken upon line y y, Fig. 4. Fig. 6 is a sectional view taken upon line o o, Fig. 4.

Referring to the parts, a column A is secured to the boiler A so that the central point of the column comes at the true water-line of the boiler, which is indicated in Fig. l by a line marked O. Column A has at its lower end a pipe d, which puts it in communication With the water in the boiler, and at its upper end a pipe a, which puts it in communication With the steam in the boiler. Secured to the column A at true water-line is a valve-casin g B, which has a vertical channel l), which communicates. through pipe b", leading into the lower end of the channel, with the steam in the upper part of the boiler; Seated in channel b is a horizontal plug-valve C, whose stem c projects into column A at true water-line and has secured upon its end a rod d, which at its outer end receives a Iioat D. When the float D is moved bythe Water rising or falling, it rotates plug C, whose lap and lead are made of a size such that when the Water reaches either high-water line, which is indicated by line l, Fig. l, or low-water line, which is indicated by line 2, Fig. 1, the channel b will be opened to allow the steam to pass up to Whistle E, which is seated upon the valvecasing in communication with thev upper end ofthe channel b. 'To give the proper amount of lap and lead, I prefer to cut a groove c in the plug-valve, which extends around the lower side of the valve upward, leaving the upper side ofthe valve intact upon each side of the channel for a distance equal to the number of degrees through which the arm cl travels in going either from true water-line to high or to 'low water line, so that when the Iioat D -is carried to either high or .low water line the valve C is rotated, so that groove c puts the upper end of channel h into communication with the lower end thereof, and thereby opens the communication between the whistle and the steam in the boiler.

Valve-stem c has an extension c', which extends through the outer side of the valvecasing B and upon its outer end receives an index-hand F, the outer end of which is over a graduated plate F. When float D is at true water-line the index-han d F points to O upon the graduated plate F', and as the iioat descends or rises the index-hand does likewise, the graduations upon the plate being spaced so thatthenumber of inches the float is away from true water-line is indicatedby the index-hand F upon the graduated plate. Valve-casing B has likewise a drain-cock Gr, seated in a channel g, extending from channel b up into chamber b2, which surrounds valve-stem c. Cock G has grooves g g2 upon opposite sides, so that by turning the .handle g3 of the cock` in one direction channel?) is put into communication with the drain-port g4, and by turning it in the other direction chamber b2 is put into communication with the drain-port. Y

Drain-cock Gis made in the form of a plugvalve tapering and held to its seat by a coiled spring g5. I have not claimed this specic form of valve herein, since the same is made the subject of a separate application.

With a water-alarm of my construction the valve-stem of the valve, which opens communication between the signal and the the plug-valve C steam in the boiler, extending', as it does, into the column at true water-line, it is seen that the Valve rotates through the same angle that the iioat passes through in rising or falling with the water in the column, and therefore the exact time when the channel b would be opened by the valve can be regulated to the iinest degree of accuracy by changing the amount oi' lap and lead to the valve. rlhe simplicity of my construction over those in the art is readily appreciated when it is taken into consideration that the valve which regulates the opening of stealn to the signal is connected directly to the rod of the Heat. The indicator, which is used for informing the engineer at what point the Water in the boiler is before the sounding ofthe signal is likewise added to my alarm with only two additional parts-1iamely, the indicator-hand and the graduated plate. The simplicity of this construction is apparent.

l. A valve-casing secured to a boiler, a steam-channel extending through the casing, a rotating valve within the casing seated in the steam-channel whose valve-stem extends into the boiler, a signaling device at one end of the channel, a rod secured to the end of the valve-ste1n,a iioat secured upon the outer end of the rod, and a pipe for placing the steamchannel in communication with the steam in the boiler substantially as shown and described. j

2. A valve-casing secured to a boiler, a steam-channel extending through the casing, a rotating valve Within the casing seated in the steam-channel whose valve-stem extends into the boiler, a signaling device at one end of the channel, a rod secured to the inner end of the valve-stem, a ioat secured upon the outer end of the rod, an extension upon the valve-stem projecting through the casing, an index-hand secured upon the end of the extension, and a pipe for placing the steamchannel in communication with the steam in the boiler substantially as shown and described.

3. A column secured to a boiler and communicating with the water and the steam thereof,.a casing secured to the column, a steam-channel extending through the casing, a rotating valve within the casin g whose valvestem extends into the column, a signaling device at one end of the channel, a rod secured to the inner end of the valve-stem, a iioat secured upon the outer end of the rod and a pipe for placing the steam-channel in communication with the steam in the boiler substantially as shown and described.

4. The combination of a valve-casing secured to a boiler at true water-line, a steamchannel extending' through the casing, a signalin g device at one end of the steam-channel, a pipe leading from the steam in the boiler into the other end of the channel, a rotating valve between the signaling device and the pipe and having a stem extending into the boiler at true water-line, a rod secured to the end of the valve-stem and a float upon the rod, whereby when the water in the boiler reaches a predetermined limit the valve puts the signal in communication with the steam substantially as shown and described.

5. The combination of a water-column secured to a boiler and communicating with the water and the steam therein, a valve casing secured to the water-column at true waterline a steam-channel extending through .the easing, a signaling device at one end of the steam-channel, a pipe leading from the steam in the boiler into the other end oi' the channel, a plug-valve seated in the easing across the channel between the signaling device and the pipe and having a valve-stem extending into the easing at true water-line, a rod secured to the end of the valve-stem upon the inside of the column, and a iioat upon the rod whereby when the Water in the boiler reaches a predetermined limit the valve puts the naling device in communication with the steam substantially as shown and described.

(i. The combination of a water-column secured to a boiler and communicating with the water and the steam therein, a valve-casing secured to the water-column at true waterline a steam-channel extending through the casing, a signaling device at one end of the channel, a pipe at the other end of the channel to place it in communication With the steam in the boiler, a rotating valve in the casing seated in the channel and having a valve-stem extending into the water-column upon one side and through the valve-casing upon the other side, an arm secured upon the end of the valve-stem upon the interior'of the column, a Heat upon the rod, an index-hand upon the end of the valve-stem upon the outside of the casing, and an indicator-plate secured to the column adjacent to the indicatorhand substantially as shown and described.

RICHARD C. BLAKE.

XVitncsses:

M. J. SCANLAN, W. F. MURRAY.

IOC

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