US508351A - Walter scott shipe - Google Patents

Description

(No Model.)

W. S. SHIPE. UNITING THE HEADS T0 THE BODIE No. 508,351.

s 0F BOILERS, dw. Patented Nov. 7, 1893.

wAsmNaToN. u. c.

UNITED v STATES PATENT QFFICE.

WALTER SCOTT sri-IPE, or TORONTO, CANADA.

UNITING THE HEADS To THE BODIES OF BOILERS, sbo.,

SPECIFICATION forming part of Letters Patent No. 508,351, dated November '7, 1893.

Application led October 31, 1892l Serial No. 450.547. (Specimens.)

.T all whom it may concern,.-

Be it known that I, WALTER SCOTT SHIPE, a citizen of the United States of America, residing at Toronto, York county, Ontario, Canada,have invented certain new and useful Improvements in Uniting Heads to Cylinders, &c., of which the following is a specification, reference being had therein to the accompanying drawings.

This improvement relates to uniting the heads of boilers, more particularly that class of boiler shown in my Patents Nos. 453,946 and 473,167, but it may be applied to other vessels having closed ends.

The invention consists in the peculiar construction, arrangement andy combinationsy of parts hereinafter more particularly described and then definitely claimed.

In the accompanying drawings-Figure l showsa vertical section of part of a boiler and its head, before being compressed. Fig. 2 shows a simiifar view with the head in place n andthe lower part of theflange of the head compressed. j Fig. 3 shows a similar view to that in Fig. 2 of another Way of carrying out my invention.

Referring now to the details of the drawings by letter-A represents the body of the boiler, the ends of which are corrugated circumferentially at a whereby a shoulder o. is formed and an inturned edge a.

The head B is preferably originally formed with a plain ange b as shown in Fig. 1, but is afterward closed in as shown in Figs. 2 and 3, making a shoulder b.

In uniting the head to the body in the plan shown in Fig. 2, there is rst set around the body, immediately under the shoulder 01.', a packing ring C preferably of lead, solder, or other soft metal, which should be of about the same external diameter as the external diameter of the corrugation a. The head B is then heated so as to be capable of slipping over the shoulder d Yand packing C, and when slipped over is set into a machine which compresses the lower part of the iiange b until it assumes the shape shown in Figs. 2 and 3, and while still hot the head is drawn toward the end of the body so as to bring the shoulder b in close contact with the soft metal packing which Will then entirely ill the space between the shoulders a and b', making a perfectly tight joint between the body and head. The boiler may be afterward galvanized or not, as desired. If galvanized, the melted metal will run into the space a: between the flange b and the inturned edge ot of the body, making a double protection.

In the modified form of vmy invention shown in Fig. 3, the same mode is carried out, except that there is no packing set below the shoulder a. and therefore the two shoulders d b are brought close together when the head is drawn outward. In this form of my invention, to make a sure joint at all times, it is advisable that the boiler shall be galvanized inside so as to till the space with the melted metal which will insure a tight joint.

The adjacent surfaces of the Iiange and body may be roughened or cut as indicated in dotted lines in Fig. 3, thebetter to enable it to hold the melted metal, although I do not consider this essential to the success of my process.

By the above described construction, a very strong and tight joint is made, for, as will readily be seen,the greater the pressure the tighter will be the joint.

As no claim is here made to the machine for 8o compressing the flange b, it is unnecessary to describe it. Many different styles of machines are known to mechanics that are capable of being used for this purpose, and each manufacturer will probably select the one that suits his own ideas best.

I am aware that ithas been proposed to set a head having a bead over a body having a corresponding bead, close down the outer bead upon the inner bead and then run solder into the groove above the joint thus formed,but I regard my invention as essentially different from this, for in that case there is no flange b, nor is the head drawn outwardly, as covered by. my first claim. This drawing outwardly I regard 4as an important feature, for when a packing of soft material is used as shown at C, the drawing outward compresses said packing and makes a tight joint.` The deep flange b is also an important point, for it strengthens the shoulder b. If there were no such flange there might be a tendency to ICO cause the shoulder to open and allow the ring of packing to slip under the shoulder.

What I claim as new is- 1. The combination with a boiler body hav- 5 ing a projecting shoulder, of a head having an inwardly turned shoulder b and fiange b Iitting the body beneath the shoulder thereon, said head being drawn outward until a tight joint is made between said shoulders,

ro substantially as described.

2. The new article of manufacture herein shown and described consisting of a vessel having a body with a projecting shoulder a', a head having an inwardly turned shoulder WALTER SCOTT Sl-IIPE.

Witnesses:

ALEN. STEUART, D. OCONNELL.

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