US1513547A - Steam trap - Google Patents

Description

Uct. 28 1924.

L. D. GOFF STEAM TRAP Filed April 23. 1923 M F 0 m Patented Get. 28, 1924.

warren s'r TES LEONARD 1). sort, or THREE RIVERS, vucniean, ASSIGNOB, 'ro ARMSTRONG MACHINE WORKS, or THREE RIVERS, MICHIGAN.

STEAM TRAP.

Application filed Ap1i123, 1923. Serial No. 634,000.

T ad Z whom it may concern:

Be it known that I, LEONARD D. Gory, a citizen of the United States, residing at Three Rivers, county of St. Joseph, State of Michigan, have invented certain new and useful Improvements in- Steam Traps, of which the following is a specification.

This invention relates-to improvements in steam traps. I

The object of the invention is to provide an improved thermostatic means for insuring the rapid and free discharge of both air and water from the trap.

A specific object is to provide an improved thermostatically controlled means for supplementing the action of such steam trap.

Objects pertaining to detailsand economies of construction and operation will definitely appear from the detailed description to follow.

I accomplish the objects of the invention by the devices and means described in the following specification. The invention is clearly defined and pointed out in the claims.

A structure which is a preferred embodiment of my invention is clearly illustrated in the accompanying drawing, forming a part of this application, in which:

Fig. I is a vertical detail sectional view taken on a line corresponding to line 1-1. of Fig. II through a steam trap embodying the features of my invention, the inverted cup float being shown in full lines. The view is taken looking in the direction of the little arrows at the ends of the section lines.

Fig. II is a detail plan view of the structure, the valve of the trap being shown in open position.

Fig. III is a detail view of the invention as applied to a somewhat different form of steam trap.

Fig. IV is a detail view of the invention as applied to the ball cock type of steam trap.

In the drawing similar reference characters refer to similar parts throughout the several views.

The parts of the drawing will be designated by their numerals of reference. 1 is the main casing having the cover 2 secured thereto by suitable means having the inlet 3 and the discharge 4. 5 is the float having a small vent 51 in the top and pivoted at 52 to thermic metalhas become heated and distorted to such an extent as to lift the hook out of engagement. The thermostatic metal is a metal made up of layers of sheet metal or material having different coeflicients of expansionso that the same distorts under the action of heat. 7 From this description it will be seen that the action of the float is secured by the flowing into the same from the inlet 3 of water or steam, as the case may be. When steam enters to a predetermined extent the float rises and is maintained in elevated position and the valve 6 is closed against its seat 61.

When the float, shown in'Figs. I and II, becomes weighted by the entry of water and the condensation and escape of steam it, of course,'drops down and opens the valve and remains in that position until the water is discharged and steam enters the float again. This is the normal action of such a structure and by the introduction of the thermostatic metal hook 9 the float is held in the depressed position until steam or hot water enters, no matter whether the water or air is being displaced, and when steam or hot water enters the temperature at once rises and the hook 9 is disengaged by the movement of the thermostatic metal to the posi tion indicated by dotted lines. The float then rises. The valve is closed and the steam is trapped.

In the modified structure illustrated in Fig. III a diflerent design of trap is shown having an outer case 11 with top 12, inlet 13 and discharge 14:, and float 15 pivoted at 151. This float or bucket is open at the top and is operated and depressed by the entrance of water which is discharged from the interior of the float through the outlet 14 through the outlet valve 16 controlled. by any suitable connection to the float 15. The thermostatic hook 17 with its engaging end 19 is secured at 18 within the case, as seen in Fig. III. When in this engaged position the float cannot rise and water necessarily flows over into the same and is discharged through the outlet 14. When steam enters, however, the thermostatic metal at once hecomes heated and deflected to theposition indicated by dotted lines and the action of. the float and'its control of the valve ispe'rmitted.

In the modified structure of Fig. a ball trap style of steam trap is shown. The thermostatic hook 20 is secured by screwQl to the case and is disposed to coact to cooperate With'the eatch 22'secured to the ball valve float 23. Its operation clearly *appears. The hook is deflected to the dotted position by heat, and the float is permitted to act and function when'warm steam enters.

It is thus seen that the trap will not'op- 'erate to shut ofl either cold air or Water but Will only trap steam which is-of' sufi'icientl-y high temperature to affect'the ther- 'mostatic metal.

It is clear from What I have stated that this thermostatic metal hook'could beintroduced into any style of steam trap and-hold the float in depressed position until steam or hot Water enters the trap when it "would be released and the operation of the fl'oa-t would be permitted to control the Valve, and

Where the same is used as a steam trap it will only trap steam.

Having thus described my invention, what 'I claim "as-new and desire to secure by Letters Patent, is: p

1. In a steam-trap, thecombination"of a mamc'as1ng, anoutlet valve therefor, a float "connected to said valve adapted to rise and fall and open the valve when Water is'pres ent, a thermostatic metal catch connection for 'holdingsaid float until deflected by the heat coacting asspecified.

2; In'a'steam trap,s the combination of :1

main casing, an outlet valve therefor, a float connected to said'valve and adapted to rise and fall and-openthe'valve when water is ipresent a hook'ofthermostatie metal'to engage said float valve means to suppress the actionthereof"until deflected by the heat.

"In Witness whereof I have hereunto set my hand and seal.

LEONARD D. GOFF. [11. s]

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