US2447747A

US2447747A - Teapot spout ladle

Info

Publication number: US2447747A
Application number: US578696A
Authority: US
Inventors: Max W Goldberg
Original assignee: Modern Equipment Co
Current assignee: Modern Equipment Co
Priority date: 1945-02-19
Filing date: 1945-02-19
Publication date: 1948-08-24
Anticipated expiration: 1965-08-24

Description

Aug. 24, 1948. M. w. GOLDBERG TEAPOT SPOUT LADLE 2 Sheets-Sheet 1 Filed Feb. 19, 1945 INVENTOR.

M. W. GOLDBERG TEAPOT SPOUT LADLE Aug. '24, 1948.

2 Sheets-Sheet 2 Filed Feb. 19, 1945 Patented Aug. 24, 1948 UNITED OFFIC E.

- '1 I Y Y 2,447,747. r

. moor srou'r LADLE Max W; Goldbergz rwest Bend, Wis; assignorvto Modern Equipment Company, I Port Washington, Wis,-acorporation ofr wisconsin 1 ApplicationTebruary 19, 1o4a-seria1No.-57s,69s

This invention relates to improvementsin teapot-spout ladles. 1

Teapot spout ladlesas-used in the foundry industry; are commonly constructed with a coniplete' metal shell whioh is circular in cross-section and this shell is lined with'fire-brick or other refractory material? Projecting :from a side of the shell "and extending substantially throughout the height oi the ladle is a teapot *t'ype' oispout. The spout has its own metal shell which is also filled with refractory material, and in said refractory materialthe pouring duct'is. formed. The duct extends downwardly from the upperend of the spout-andcommunicates with the interior of the ladle by way of an opening near the bottom;

Due to the fact that the refractory material in the spout covers a substantial portion of the metal shell of theladldproper;this portion of the'shell is not exposedto the airyas is the rest of the ladle shell and heat is retained-in this portion of the shell to anexcessive degree and is not properly dissipated. As a result,=tl'iis spout covered portion of the metal shell as well as the ring at -thetop-of the shell frequently'buckle's from the intense heat of the molten metal and becomes distorted- In additionrdue to the condnction of heat by t e spout covered portion of the shell away from therefractory material-of the spout an insufli cicnt amount ofheat-passes-into the refractory material of thespout." Thus, if the ladle stands i toolong before pouring; the metal in the spout may freezeup andnecessitate a relinin of the spout and a part of the ladle in order to repair the damage;

It is.'--thereiore, a general object cf-the present invention'to provide an improved ladle ofthe typedescribed which is so constructed as to prevent the above mentioned buckling and distortion; and which is constructed *to allow suificient heat to pass into the spout so thatthemetal in the spout'is kept in a fluid condition.

A more specifieobject isto provide a ladle as above described wherein that portion of the metal shell of the ladle which :is'covered by the spout is formed with perforations to materially reduce the capacity of said portion of the shell to receive heat and to conduct heat away from the spout, The portion of the ladle shell. just referredto is preferablya separately formed perforated metal plate having its edges overlapping the edges of a vertical opening in the ladle shell.

A still further object of the invention is to provide in a ladle having a separately formed metal plate behind the spout structure, means permit- 62 Claims. (Cl. 22-4191 ladle with part broken-away and shown in thereto; and

ting expansionuand*icontraction of said plate without breaking the fire-brick-"lining of the ladlei or'causing buckling of the plate. The said means preferably comprises inflammable spacer strips positioned between the vertical edges of the perforated plate and the adjacent portionsaof the fire-brickdiningp These strips, :as soonas the ladle isused; are'quickly burned to charcoal by the intense heatand leave a vertical space adjacentto each edge so that there is room for expansion =of: the metalrplate. Thus'undue pressures. are not excited upon the plate or the firebrickiliningz With the above: and other objects in view; the inventionconsists: of the improved teapot spout ladle; and all jof its parts and combinations,- as set forth' in the claims, and all equivalents thereof;

In the. accompanying drawings, illustrating one complete embodiment of the preferred form of the invention; in which the same reference numerals designate the. same parts in all-of the views,

Fig. 1 is a sidel'elevational View of theimproved vertical section;

Fl'g-.-2 'is .a'h'orizontall sectional view taken on the line Z--2 of Fig.4;

Fig.--3 is. a front elevational view with' parts broken away and shownin section to. illustrate the perforated plate and spacer arrangement;

Fig:- 4 isa front view of the metal shell to be usedin formingsthe ladle :proper before the perforated; "plate and spout have been connected Fig. 5 'is a 'cplan view of the perforated plate alone; Referring more particularly to the/drawingSJ- the shell of the. ladlei proper is designated generally by =-the numeral' B and this shell is -formed of-"steel plate, The shell'comprises an upright portion 9 and a bottom member l0 which is suitably secured to the lower edges of the upright portion; The upright-portion 9 is circular in 'cross-section'but theedges ll and i2 of the sheet forming said upright shell portion terminate'slshort ofmeeting to leave a space 13 therebetween as" illustrated 'in Fig. 4.. Fitted within the sh'elladjacentto the upper edge of the upright "portion thereof' is a .metal ring. I4. This 'ringis 'in'the 'form' of a complete circle and is 3 Figs. 2 and 3). The lower edge l8 of the plate l terminates above the bottom of the ladle as is clear from Fig. 3.

The ladle is lined in the usual way with a plurality of layers of fire-brick, or other suitable refractory material designated generally by the numeral I9. The refractory material also covers the bottom of the ladle and fills in the space at the front of the ladle below the lower edge ill of the plate 15. An opening extends throu h the latter portion of the refractory material to communicate with the interior of the ladle just above the bottom of the lining.

Before the lining is inserted, wooden spacer strips 2| and 22 are inserted adjacent the vertical edges 23 and 24 of the perforated plate is;

These wooden strips are held in place by the lining after the latter is in place,

Surrounding the exterior of the shell portion 9 of the ladle is a metal band 25 having trunnions 26 projecting laterally therefrom.

The spout portion of the ladle is designated generally by the numeral 2! and it includes spaced metal side portions 28 which are welded to the edges II and [2 of the shellportion 9. The spout also includes metal front plates 29 which are bolted as at 30 to angles 3|. The latter angles are welded to the side portions 28 of the spout at the outer edges thereof.

' The spout is packed with high temperature refractory material 32 such as fire-clay and the pouring duct 33 is formed in the refractory material. This pouring duct has a flared upper discharge end 33, and has its lower end communieating with the opening 20 which extends through the side-wall of the ladle proper. There may also be vertical holes 34 extending through the fire-clay within the spout. These holes form vents to carry away excess heat. At the bottom of the spout is a curved plate 35 which connects with the bottom of the ladle proper.

Heretofore, the upright portions of the shells of teapot spout ladles were solid and there was no gap such as thegap l3 formed in Fig. 4. With this prior type of construction the intense heat in that portion of the metal shell which is covered by the spout, was not exposed to' the atmosphere and there was a-tendency for the heat to stay in the spout covered portion of the metal shell rather than pass to the refractory material in the spout. Furthermore, there was a tendency for the heat in this spout covered portion of the shell to be conducted laterally to air exposed portions of the shell, it being much easier for the heat to travel in this manner than to pass into the refractory material of the spout where heat is desirable in order to prevent a freeze up. With the present invention, however, the use of the gap 13, which gap is filled in by a perforated metal plate l5, provides an arrangement wherein the capacity of the metal plate I5'to retain and conduct away heat ismaterially reduced because of the perforations l6. Thus more heat will pass into the refractory material of the spout and be carried off by way of the vertical vents 34. Furthermore, the perforations I6 in the plate I 5 will minimize the possibility of the plate buckling by lowering the capacity of this portion to receive heat and by adding flexibility to the plate. By allowing heat to pass into as may come within the 4 the spout, metal in the spout portion is maintained in a fluid condition.

In addition to the above, and in order to insure against buckling, the novel spacer strips 2| and 22 are employed. With the use of these strips, as soon as the ladle is employed in a foundry, the intense heat from the molten metal will burn out the strips leaving vertical spaces filled with charcoal. This allows for transverse expansion of the metal plate IS without exerting undue pressure on the fire-brick lining to crack .the latter. This also provides for expansion of the plate without danger of the plate buckling there being'suffi'cient clearance between the bolt l-l and one or both sets of bolt holes to allow for such expansion.-

While the use of a separately formed perforated plate l5 is preferred, nevertheless a number of advantages of the present invention can be obtained by merely perforating the usual ladle shell'directly behind'the spout.

Various other changes and modifications may be made without departing from the spirit of the invention, and all such changes are contemplated scope of the claims.

What I claim is:

. 1. In a ladle, a main upright metal shell portion having uprig ht edges which terminate short of meeting to form a gap in the shell, a teapot spout connected to said upright edges and projecting laterally from the ladle, and a metal plate spanning said'gap in the shell'and having edges overlapping said upright edges of the main upright shell portion and connected thereto, a lining of refractory material in said ladle covering the inner side of said plate, refractory material in the spout positioned against the outer side of said plate, said plate having a multiplicity of openings therein, and upright spacer strips formed of material which disintegrates with high heat positioned in the adjacent refractory material and against the upright edges of said perforated metal plate.

2. Ina ladle, a main upright metal shell portion having upright edges which terminate short of meetingto form a gap in the shell, a teapot spout connected to said upright edges and projecting laterally from the ladle, and a metal plate spanning said gap in the shell and having edges overlapping said upright edges of the main upright shell portion on the inner side thereof and connected thereto, a continuous lining of refractory material in said-ladle covering the inner side of said plate and shell, refractory material in the spout positioned against the outer side of said plate, said plate having a multiplicity of openings therein, and vertical spacer strips formed of material which disintegrates with high heat positioned within the ladle lining and against the upright edges of said perforate metal plate.

MAX W. GOLDBERG.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number