US46416A - Improvement in steam-traps - Google Patents

Description

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NA PETERS, PHOTO-LITHOGRAPIIER WASHINGTON D C NITED STATES PATENT OFFICE.

L. W. WOODWARD, 0F NORTH ADAMS, MASSACHUSETTS.

IMPROVEMENT IN STEAM-TRAPS.

Specification forming part of Letters Patent No. 46,416, dated February 14, 1865.

'to the accompanying drawings, forming part of this specification, in which- Figure lis an elevation of an axial longitudinal section ot' my steam-trap. Fig. 2 is a cross-section taken through the waterescape holes gh ofthe trap atthe moment when they coincide in position.

Similar letters of reference indicate like parts.'

This invention consists in a novel construction ot' steam-trap, in which the opening and closing thereofl is caused. by the alternate expansion and contraction of the pipe which forms the connection between the steam apparatus to be cleared ot' the water of vcondensation and the trap. i

A represents any support to which the receiver B may be secured. The receiver and the other parts of the trap are here shown to be placed in vertical positions; but they can be placed in horizontal or inclined positions without impair-ing their efficiency.

The receiver B is an open cylinder with a screw-thread, C, tapped in its upper end to receive a tube, F, which is rmly screwed down therein until its ange K rests upon the upper end of the receiver, or as near thereto as its proper adjustment requires. The tube F extends beyond the llange K, as seen at a', to receive a stuiing-box, D, of or dinary construction. The tube Fis open at both ends, its lower end, b, extending within and nearly to the lower or opposite end tf the receiver, and having at that end b a 1ongitudinal slot, j, as shown in Fig. 1.

E is a steam-pipe connected with the steampipe S of an engine or any other steam apparatus to which a steam-trap is to be applied. T'he. pipe E is passed into or through the tube F a distance equal to the length of said tube, and has onone side, nearits end,a pin, z', which tits in the slotj of the tube. The end of said pipe E is closed, Abut its sides are perforated, on a line about midway ofthe length of the receiver, with numerous holes, g,`which coincide, in certain positions the sides of the tube F. The joint formed bythe pipe E where it enters the neck c of the tube F is made tight by means of the stuft'- ing-box D. The receiver is to be connected at G, where a screw-thread is cut in its end, to a pipe, which shall carry oft' the water of condensation.

The operation of the apparatus is as follows: The receiver being properly secured in place, the tube F is adjusted therein so that the holes in the steam-pipe E shall coincide with the holes in the tube, the adjustment being made when the several parts are cold. When steam is got up in the steam-pipes or appara-tus to which the pipe E is connected, the steam will lill the pipe E and cause it to expand by raising the temperature ot' the metal, ant] its sides will move far enough within the tube F to take the holes g past the holes h, so as to prevent the escape ot' steam.

The trap is to be located in such a position as that any water ot' condensation produced in the pipe S and its connections will iiow into and fill the lower end of the pipe F. Since the temperature of the said pipe E w-ill length, and the said holes will again coincide, when the water will escape into the receiver, and pass from thence into the conducting-pipe screwed into its end G. The longitudinal movements of the pipe E are guided, and the pipe and tube prevented from displacement by the rotation of either, by means ofthe pin and the slotj. i

This steam-trap is found in practice to be very efficient, and, as will be perceived by lis not easily liable to derangement or displacement, either from accident or from the operation of natural causes-such as frequent changes in temperature-nor is it liable to become easily deranged from the presence therein or the passage through it of oil or other foreign substances.

I claim as new and desire to secure by Letters Patentl The steam-trap constructed and operating substantially as above described.

L. W. WOODWARD.

Witnesses:

A.. W. RICHARDSON, CHARLES MUNN.

be lowered by means of the presence of the water of condensation, it will contract in those skilled in the art to which it belongs, it

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