US958892A - Mold. - Google Patents

Mold. Download PDF

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Publication number
US958892A
US958892A US48220809A US1909482208A US958892A US 958892 A US958892 A US 958892A US 48220809 A US48220809 A US 48220809A US 1909482208 A US1909482208 A US 1909482208A US 958892 A US958892 A US 958892A
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US
United States
Prior art keywords
mold
metal
section
chamber
ring
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US48220809A
Inventor
William A Riddell
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
DuPont de Nemours Deutschland GmbH
Original Assignee
William A Riddell
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by William A Riddell filed Critical William A Riddell
Priority to US48220809A priority Critical patent/US958892A/en
Application granted granted Critical
Publication of US958892A publication Critical patent/US958892A/en
Anticipated expiration legal-status Critical
Assigned to DU PONT DE NEMOURS (DEUTSCHLAND) reassignment DU PONT DE NEMOURS (DEUTSCHLAND) ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: CIBA-GEIGY CORPORATION
Expired - Lifetime legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D27/00—Treating the metal in the mould while it is molten or ductile ; Pressure or vacuum casting
    • B22D27/04—Influencing the temperature of the metal, e.g. by heating or cooling the mould
    • B22D27/045—Directionally solidified castings

Definitions

  • This invention relates to molds, and consists in certain improvements in the construction thereof as will be hereinafter fully described and pointed out in the claims.
  • the object of the invention is to form a mold of metal having indentures in which may be cast articles similar to gears, and the invention is particularly desirable for easting articles of the kind specified of steel.
  • the metal chilling before it has fully filled the indentures ith my invention I propose to heat this metal portion of the mold, so that the metal being cast, especially such a metal as steel, will fully fill the mold before chilling. In this way a perfect casting may be obtained, and the presence of the metal mold does not with this material change the nature of the casting.
  • Figure 1 shows a plan View of the mold, the sand being removed from the top of the mold.
  • Fig. 2 a section on the line 2-2 in Fig. 1.
  • Fig. 3 a side elevation of the mold.
  • the mold section 1 is formed with an annular chamber 1 on its outer periphery, the chamber being preferably constructed by means of the flanges 5, and a surrounding ring or band 6.
  • Annular flanges 7 extend into the chamber 4, and a burner 8 is arranged in the chamber in position to direct a flame against the flange.
  • the burner is provided with the usual mixer 10.
  • the flanges 7 stiffen the ring 1, but they also increase the heating surface, so that the ring may be readily heated to the desired temperature.
  • a flask 11 is arranged at the bottom of the ring 1, and another flask 12 at the top. These are bolted together, so as to clamp the ring 1 between them by means of the bolts 14 extending through the cars 13.
  • the metal mold forming the periphery of the gear is supplemented by the sand 15 forming the mold for the body of the gear.
  • a mold for casting forms with protuberances comprising a metal mold section having indentures in which the protuberances of the castings run; and means for heating the metal mold section.
  • a mold for casting gears comprising a metal ring having indentures therein to form the gear teeth; and means for heating said ring.
  • a mold for casting forms with protuberances comprising a metal mold section having indentures in which the protuberances of the castings run; an annular chamber on the periphery of said section; flanges extending into the chamber; and means acting on the flan es for heating the section.
  • a mold for casting forms with protuberances comprisin a metal mold section of the annular form having indentures in which the protuberances of the castings run; an annular chamber on the mold section; annular flanges extending from the section into the chamber; and means acting on the flanges for heating the chamber.

Description

W. A. RIDDELL.
MOLD.
APPLICATION FILED MAR. 9, 1909.
Patented May 24,1910.
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WILLIAM A. RIDIDELL, OF ERIE, PENNSYLVANIA.
MOLD.
To all whom it may concern:
Be it known that I, l VILLIAM A. RIDDELL,
a citizen of the United States, residing at Erie, in the county of Erie and State of Pennsylvania, have invented new and useful Improvements in Molds, of which the following is a specification.
This invention relates to molds, and consists in certain improvements in the construction thereof as will be hereinafter fully described and pointed out in the claims.
The object of the invention is to form a mold of metal having indentures in which may be cast articles similar to gears, and the invention is particularly desirable for easting articles of the kind specified of steel. In casting articles of this kind and of this material, difliculty has been experienced in fully filling the mold, the metal chilling before it has fully filled the indentures. ith my invention I propose to heat this metal portion of the mold, so that the metal being cast, especially such a metal as steel, will fully fill the mold before chilling. In this way a perfect casting may be obtained, and the presence of the metal mold does not with this material change the nature of the casting.
In.the accompanying drawings, Figure 1 shows a plan View of the mold, the sand being removed from the top of the mold. Fig. 2 a section on the line 2-2 in Fig. 1. Fig. 3 a side elevation of the mold.
1 marks the metal mold section, which in the drawing is in the shape of a ring having indentures 2 shaped to form gear teeth; 3 marks the sand mold, which in the illustration is arranged to form the body of the gear wheel.
The mold section 1 is formed with an annular chamber 1 on its outer periphery, the chamber being preferably constructed by means of the flanges 5, and a surrounding ring or band 6. Annular flanges 7 extend into the chamber 4, and a burner 8 is arranged in the chamber in position to direct a flame against the flange. The burner is provided with the usual mixer 10. The flanges 7 stiffen the ring 1, but they also increase the heating surface, so that the ring may be readily heated to the desired temperature.
Specification of Letters Patent.
Application filed March 9, 1909.
Patented May 24:, 1910.
Serial No. 482,208.
A flask 11 is arranged at the bottom of the ring 1, and another flask 12 at the top. These are bolted together, so as to clamp the ring 1 between them by means of the bolts 14 extending through the cars 13.
As shown in Fig. 2 the metal mold forming the periphery of the gear is supplemented by the sand 15 forming the mold for the body of the gear.
Vith this construction of the mold, it is possible to cast steel gears with perfectly formed teeth. This is particularly desirable with this metal for two reasons, the surface is clear from the sand with which such castings are usually coated, and the metal itself is not materially changed by the presence of the metal mold.
What I claim as new is 1. A mold for casting forms with protuberances comprising a metal mold section having indentures in which the protuberances of the castings run; and means for heating the metal mold section.
2. A mold for casting gears, comprising a metal ring having indentures therein to form the gear teeth; and means for heating said ring.
3. A mold for casting forms with protuberances comprising a metal mold section having indentures in which the protuberances of the castings run; an annular chamber on the periphery of said section; flanges extending into the chamber; and means acting on the flan es for heating the section.
4. A mold for casting forms with protuberances comprisin a metal mold section of the annular form having indentures in which the protuberances of the castings run; an annular chamber on the mold section; annular flanges extending from the section into the chamber; and means acting on the flanges for heating the chamber.
I11 testimony whereof I have hereunto set my hand in the presence of two subscribing witnesses.
CHARLES G. BREVILLIER,
K. R. KANE.
US48220809A 1909-03-09 1909-03-09 Mold. Expired - Lifetime US958892A (en)

Priority Applications (1)

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US48220809A US958892A (en) 1909-03-09 1909-03-09 Mold.

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US48220809A US958892A (en) 1909-03-09 1909-03-09 Mold.

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US958892A true US958892A (en) 1910-05-24

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2496991A (en) * 1946-11-08 1950-02-07 Electric Storage Battery Co Mold for casting storage battery straps
US2887722A (en) * 1955-12-19 1959-05-26 Owens Corning Fiberglass Corp Fluid heat exchange apparatus for use in molds

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2496991A (en) * 1946-11-08 1950-02-07 Electric Storage Battery Co Mold for casting storage battery straps
US2887722A (en) * 1955-12-19 1959-05-26 Owens Corning Fiberglass Corp Fluid heat exchange apparatus for use in molds

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