US906117A

US906117A - Ladle for carrying and tipping blast-furnace slag.

Info

Publication number: US906117A
Application number: US41670008A
Authority: US
Inventors: John Henry Dewhurst
Original assignee: Individual
Current assignee: Individual
Priority date: 1908-02-19
Filing date: 1908-02-19
Publication date: 1908-12-08
Anticipated expiration: 1925-12-08

Description

J. H. DEWHURST. LADLE FOR CARRYING AND TIPPINGABLAST FURNAGE'SL'AG.

APPLICATION FILED FEB. 19, 1908.

Patented Dec.8, 1908.

WI TNESSES a. KM MF THE NORRIS Psrms C0,, wnsnmarcw, D c.

JOHN HENRY DEWHURST, OF SHEFFIELD, ENGLAND.

LADLE FOR CARRYING AND TIPPING BLAST-FURNACE SLAG.

Specification of Letters Patent.

Application filed February 19, 1908.

Patented Dec. 8, 1908.

Serial No. 416,700.

To all whom it may concern:

Be it known that I, JOHN HENRY DEW- HURST, subject of England, residing at 68 Attercliffe road, in the city of Sheffield, in the county of York, England, have invented new and useful Improvements in Ladles for Carrying and Tipping Blast-Furnace Slag, of which the following is a specification.

My present invention is for improvements and modifications in ladles such as form the subject matter of my U. S. A. Patents Nos. 740,404 and 740,405, both dated 6th October 1903.

It hasbeen found in practice that the ladles which formed the subject matter of the patents herein referred to, notwithstanding the methods which have been employed for strengthening them, have been liable to crack through the continual expansion and contraction which is produced through the fluctuations in temperature to which they are subjected when in use, and it has also been found that the trumiions, more particularly the twin or double trunnions, are liable to rapid wear, and the object of my present in vention is to obviate these defects.

The nature of my invention will be better understood on reference to the accompanying sheet of drawings in which,

Figure 1, is a side elevation of one of my improved slag ladles. Fig. 2, is an end elevation and Fig. 3, a plan of the same. Fig. 4, is an end elevation of the protective shield for the trunnions, and Fig. 5, is a side elevation of the same.

The same letters refer to similar parts throughout the several views.

In order to prevent the ladles from crackin a line, A. B. transverse to the centers of the trunnions, a, b, and join them together with pins and cotters, dowels or bolts, 0. The advantage of making the joint longitudinally is, that it does not interfere with the scour of the metal when the ladle is tipped, as has been found to be the case when the joints have been made transversely or parallel with the centers of the trunnions. I also obviate the tendency of the wear of the trunnions, a, b, by covering their wearing ing, I cast them in halves longitudinally, i. e.,

surfaces with protective shields, d, of hard steel or other equivalent metal and I form them of such a shape that they can be shrunk on when hot and retain a firm grip in the required position. I

Protective shields as herein described are applicable for repairing or renewing the surfaces of the trunnions of ladles which have not been protected in the first instance and which have become worn by use.

What I do claim and desire to secure by Letters Patent is:

A slag ladle consisting of two parts divided from each other vertically, means for holding the two parts together and trunnions, the joint between the two parts extending longitudinally of the ladle and in a plane at right angles to the vertical lane in which the trunnions lie, substantial y as described.

In testimony whereof I have signed my name to'this specification in the presence of two subscribing witnesses.

DEWHURST.

JOHN HENRY Witnesses:

W. H. BAIRSTO, J. H. Bren.