US915780A - Steam-trap. - Google Patents

Description

United Kingdom ofeGreat Britain and Ires4 'Grangemouth, Scotland, have invented new' e ALEXANDER MALCOLM, or GEANGEMOUTH, SCOTLAND.

STEAM-TRAP."

'Application mea August 7,1907:4 'serial Nn. 387,402.

To all 'whom it may concern', l

Be it known that I, ALEXANDER MAL'-`- COLM, engineer, a subject of the King ol the land, vand resident, of 1Q"- Charlotte street;

; and useful Improvements in Automatic Si;

- pipes and wet steam.

Figurel shows a sectional elevation ofthe 'wat-'er to any desired point.

phon Steam-Traps, ofA which the following is" a s ecification.

s teamtrap ford'raining water fromrsteam cylinders, due to condensation and improvedv automatic siphon steam trap.

' Fig. 2 is a sectional 4lan'view of the same.

The upper end of the steam trap-,a's shown, isl` designed to be screwed into the pipe or cylinder to be drained of Water'so as to depend approximately vertically therefrom, and the lowerv screwed end B may beopenv to the 'atmosphere or' into aneth. length of tubingforconductin the drainage e steamtra is formed with a `main chamber or cato basin a-having-a curved bottom wall for the Aes Vpurpose presently to be explained, and 'adjacent to the bottom wall 1s a1 lateral portor opening c3 through which the water of c one densation' may pass into the" siphondischarge passage. Surrounding the port or ol'pening c3 is a'seat @of woodite "5 or other e suitable composition to afford the proper seat ,for the ball valve. 'l

n b is a ball valve of any-buoyant materia such as cork, or of hollow metal such asalu- ,minum or brass.A Thei ball o is free within the chamber a so as to rise in the `chamber and oat upon thewater that collects therein. Normally theball b rests against the valve seat c4 of the valve openings3 toclose the outlet from chamber a' into the 'Siphon -'passage way. The shape of the bottom wall l of chamber a is such With relation to the seat of theport c3 that the ball will beheld by its engagement-with the bottom wall into lclosed engagement with the lvalve seat. lIn addition to this the 'chamber a,- being in open communication withthe steam pipe or cyl# inder to which the trap is attached, it will be observed that the pressure of the' steam in the pipe or cylinder will also tend to hold the ball b in closing contact with the seat of the @outlet port.` 1 v 1 l Formed in the body 'of the Steam trap'at Specification of Letters Patent Patented March 23, 1909.

vSiphon `assage C. The inner Siphon leg c is closed ythebottom wall c just below the port c3 which leads intovitv from the chamber a; while the other siphon leg cZ-leads into the discharge or outlet endv bof the trap.

A rotaryvalve D maybe provided as shown wall of the. casing of the trap in valinenient with the port c3, so as to regulate the size of ful in entirely closing upgt e opening c3 to y f withv its stem threaded through the outer his inventionrelates to an automatic vthe opening through port c3 or to engage the ball to force it away from its seat in said opening.- This valve Dv may also prove useprevent the'esca e of steam in the event of the oat or ball `being out of order.

It will be observed. that iu operation the water of condensation-collecting in the main chamber a willfloatthe ball b away from the port c3 andv allow Water of condensation to pass through said opening into the leg c of m siphon passage, from which it is discharged into the leg c?, the ball being again lre-seated'upon the porto3 after the water of condensation has passed from chamber a.

WhatI claim'is:

1. vA steam trap having a main chamber a` anda Siphon discharge passage c, c2 in communication with saidmain chamber through `a lateral port 03,'and' afloat b-in the chamber a, adapted to be seated upon said lateral port. c3, substantially as set forth.

2.. A steam trap having a main chamber a formed With a curved bottom walland a lateral escapelport c3, a float valve within the valve b within casing a adapted to be lseated in said escape port c3, and a lvalve D suitably mounted in the casing in position to control@4 the dischargeport c3 independently of the ball Valve.

Witnesses:

JAMES L. WEIGHT, HUGH DICK.

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