US629848A - Gage-glass. - Google Patents

Description

Patented Aug. l, i899. w. A.n0wN|-:s.

GAGE GLASS.

(Applicption led Nov. 29, 1897.)

nu.V 629,848.

(No Modal.)

Y W V171/es s l/ UNITED STATES` WILLIAM A. DoWNEs, or DETROIT,

MICHIGAN, ASSIGNOR TO THE PEN- BERTI-IY INJECTOR COMPANY, OF SAME PLACE.

GAGE-GLASS.

SPECIFICATION forming part of Letters Patent No. 629,848, dated August 1, 1899. Application tiled November 29 1897. Serial No. 660,058. (No model.)

To all whom, t may concern:

Beit known that I, WILLIAM A. DovNEs, a citizen of the United States, residing at Detroit, in the county ofl Wayne and State of Michigan, have invented certain new and use ful Improvements in Gage-Glasses, of which the following is a specification, reference being had therein to the accompanying drawings.

My invention relates'to that class of watergage glasses in which the connecting-fittings are provided with a check-valve adapted to automatically close upon the breaking of the glass.

Heretofore Watergages have been made provided with various forms ot' check-valves, for the purpose above described. These have, however, all been subject to a serious defect, which has rendered their employment objectionable vif not positively dangerous-viz. the liability of the valve being closed by the sudden iiuctuation of the Water in the passage caused by the operation of the blow-oft valve, thus causing the glass to give a false indication of the boiler Water-level.

My inventionhas for its object the overcoming of this objection; and it consists in the peculiar construction and location of the check-valve employed, which in its open position is shielded from the direct-impact of the current passing from the boiler to the glass; further, in the peculiar arrangement of said valve in connection with a hand-operated shut-oil. or blow-od valve, and, further, in the peculiar construction, arrangemeut, and combination of parts, as more fully hereinafter described and claimed.

In the drawings, Figure 1 is a horizontal section through one of the connecting-fittings for my gage-glass, showing the ball checkvalve therein. Fig. 2 is avertical section on line a: x, Fig. 1; and Fig. 3 is a vertical central section through a modified form of litting.

A is the fitting forming one of the connections between the boiler and the glass tube of the gagt-I.Y In Fig. 1 I have shown this fitting as constructed for a double gage-glass and consisting of the horizontal nipple a and 5o the oppositely-extending lateral branches b l b', connected with the nipples B B', which are provided with suitablemcans for securing one end of the gage-glass thereto. Within each of these branches?) b'is arranged an automatic check-valve, which in lits open position is shielded from the direct impact of the glass. For these valves I preferably employ the balls D, adapted to seat against the seats C and when released therefrom to roll down into pockets E, formed bythe L-shaped Wings vor shields c, the bottom of the tit-ting being suitably inclined to direct' the balls into these pockets.-

L is a passage leading to the blow-oft cock from a point in rear of the shields c. r

In the construction shown in Fig. 3 the pocket E is formed by the shield or diaphragm F, which separates it from the direct passage G, leading from the valve to the glass.

H is a double-seated valve having the screwthreaded shank I passing out through the nipple J of the casing and adapted in one pobloW-oft passage L and in its opposite position to open this blow-oft passage and engage with the seat- M, thus shutting off connectiony Withthe boiler. This Valve passes through the pocket E and forms a movable support for the ball when in the pocket.

'In the use of the gage the ball or balls D will normally lie in the pockets E, in-Whioh they are Shielded from the current in the dinot be disturbed either by the ordinary luctuations of the current in said passage or by the rush of water and steam incident to the manipulation of the blow-od cock, the current -1 in the latter case being so directed as to tend to hold the balls inthe pockets. Should, however, the glass be broken, the great rush of water Athrough the passage toward the glass vvillcreate a suction or eddy current which will draw the ball out of the pocket and force it to its seat.

The object of the construction shown in Fig. 3 is to prevent danger of the ball sticking, due to the collection of sediment around it in the pocket. Thisis accomplished by resting the ball upon the movablepart of the valve H, which as it is operated from time to time will move the ball and turn it in the sition to engage with the seat K and close the current passing from the 'boiler toward the rect passage through the fitting, and thus will pocket. The pocket E is also in direct line with the blow-olf passage L, and thus when the valve is moved to open the latter any sediment which may have collected in the pocket Will be blown out.

Vhat I claim as my invention is- I. The combination with the conn eciing-itting for a gage-glass, having a passage therethrough from the boiler to the glass, of a receptacle at one side of the passage, a shield between the receptacle and passage, and a valve in said receptacle behind said shield normally out of the current through said passage, and adapted on the breaking of the glass to be drawn from behind the shield and moved to close the passage.

2. The combination With the connecting-fitting for a gage-glass having a passage therethrough from the boiler to the glass, of a shield or diaphragm extending into and longitudinally of said passage and forming a pocket, and a valve in said pocket normally out of the current through said passage, substantially as described.

3. The combination with the connecting-fitting for a gage-glass having a passage therethrough from the boiler to the glass, of a diaphragm or shield extending into and longitudinally of said passage and forming a pocket opening toward the gage-glass, a blowoff valve back of the closed side of said pocket, and a valve in said pocket normally out of the current through said passage, substantially as described.

4L. In a gage-glass the combination with the connecting-fitting for the glass havingahandoperated valve therein, of a ball check-valve in said fitting normally resting on a movable portion of said hand-valve, and a shield independent of said hand-operated valve adapted to protect said ball-valve in its normal position from the direct impact of the current passing through said tting toward the glass.

5. In a gage-glass the combination With the connecting-fitting for the glass having a handoperated blow-off valve therein, of a shield independent of said Valve forming a pocket out of line With the direct passage through said fitting toward the glass, and in line with the blow-off passage, and a ball check-valve normally resting in said pocket upon a movable portion of said hand-valve.

In testimony whereof I aix my signature in presence of two Witnesses.

IVILLIAM A. DOIVNES. Witnesses:

M. B. ODOGHERTY, Y OTTO F. BARTHEL.

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