Search Images Maps Play YouTube News Gmail Drive More »
Sign in
Screen reader users: click this link for accessible mode. Accessible mode has the same essential features but works better with your reader.


  1. Advanced Patent Search
Publication numberUS449854 A
Publication typeGrant
Publication dateApr 7, 1891
Filing dateSep 11, 1890
Publication numberUS 449854 A, US 449854A, US-A-449854, US449854 A, US449854A
InventorsGeorge D. Iierrold
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Die for brick or tile machines
US 449854 A
Abstract  available in
Previous page
Next page
Claims  available in
Description  (OCR text may contain errors)

(No Model.)



No. 449,854. Patented Apr. 7,1891.




SPECIFICATION forming part of Letters Patent No. 449,854, dated April 7, 1891.

Application filed September 11, 1890. Serial No. 364,657. (No model.)

To all whom it may concern.-

Be it known that I, GEORGE D. IIERROLD, a citizen of the United States, residing at Milton, in the county of Northun'iberland and State of Pennsylvania, have invented an Improved Brick-Die, of which the following isa specification.

Myinvention relates to an improved brickdie for stiff-clay brick-machines, the object of this invention being to provide a die that shall be cheap, simple, and durable, one that will operate upon all kinds of clay and produce sharp square corners.

The invention consists of a die made in two parts, one within the other, and a steam-spaoe between said parts, the inneror roughing die being located entirely within the outer and finishing die part.

The invention consists, further, in certain details of construction and novel combination of parts, such as shown in the accompanying drawings, and more fully explained hereinafter.

In the accompanying drawings, forming a part of this specification, Figure 1 is a perspective View of my improved die. Fig. 2 is a vertical transverse section. Fig. 3 is a perspective View of the rear die part, and Fig. 4. is a perspective view of the interior of the outer die part.

In carrying my invention into effect I employ the inner or roughing die part A, the interior corners of which are slightly rounded, as at a. The rear nd of the inner die part is formed with a fla ge B, extending entirely aroundsaid die part, said flange proj ectingoutwardly at approximately right angles to sides of the die. The inner die partis connected to the discharge-orifice by means of the flange B, and the outer or finishing die part is also connected with the roughing part by being attached to the flange B, as will be more fully explained hereinafter. The outer or finishing die part 0 is of different cross-sectional areas at its inner and outer ends, and about midway its length is provided on its interior surface with the beveled shoulder or ledge 0, extending around all the sides and connecting the larger or rear portion 0 of the die part and the contracted or finishing portion 0 of the same. The rear end of the part 0 is also provided with a flange D, said flange resting on the flange Band is secured thereto by the screws E. A steam-packing F is interposed between the flanges D and B for the purpose of making a tight joint between said parts. The rear portion 0' is sufficiently large to fit over the roughing-die part A and leave a space or chamber G surrounding said roughing part. The steam-packing F between the flanges assists in sealing this chamber at the rear. The shoulder or ledge c is forward of the forward end of the roughing-die, and the interior area of the rear end of the portion 0 is slightly larger than the interior area of the forward end of part A; but the interior area of the forward or outer end of the part 0 is slightly contracted and smaller than any other part of the die. A steam-pipe II is tapped into the upper side of the portion a, and an exhaust-pipe II is tapped into the underside of the same at a point approximately opposite the steam-supply pipe. A cock or plug H is arranged in the exhaust-pipe, by means of which the exhaust is regulated.

The die constructed as described is connected with a screw brick-machine, and the steam-pipe H is connected with the steamboiler" employed to drive the engine. hen the column of clay is fed to the die, the steam is admitted to the steam-chamber and the exhaust regulated. The clay in passing through the roughing part is heated by the steam surrounding said part, and the tendency of said heating is to draw a great deal of water to the exterior of the brick, which makes it slide very easily through the rear die part, and as the steam is in constant circulation it is deflected by the beveled ledge toward the clay as it passes from said part, and as the rear end portion 0 is larger than the forward end of the part A the column of clay is enveloped by the steam before it is subjected to the pressure of the contracted end, and as it is condensed it prevents the clay sticking and enables the die to make sharp square corners.

Having thus described my invention, what I claim is 1. In an improved brick-die, the combination, with a rear and inner part, of a forward and outer part entirely inclosing said inner part and forming a steam-chambersurround ing said inner part, the beveled ledge or shoulder forward of the inner part, and the steam- In a brick-die, the combination, with the die part A, having the flange B, of the die part (1, consisting of the portion 0 and c and the ledge c and flange D, the steam-packing F, screws E, steam-snpply pipe II, exhaustpipe 11, and cook H all arranged and adapted to operate substantially as shown and de- 20 scribed.




Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US2443289 *May 4, 1944Jun 15, 1948Plax CorpApparatus for shaping plastics by extrusion
US5843503 *Feb 24, 1997Dec 1, 1998General Mills, Inc.Apparatus and method for making multiple patterned extrudates
US6143342 *May 10, 1995Nov 7, 2000General Mills, Inc.Apparatus and methods for making multiple, complexly patterned extrudates
US6251452Apr 23, 1999Jun 26, 2001General Mills, Inc.Apparatus and methods for making multiple, complexly patterned extrudates
US6579555Sep 12, 2000Jun 17, 2003General Mills, Inc.Confectionery food piece having colored fine line
US6620448Oct 29, 2001Sep 16, 2003Recot, Inc.Extruder die with additive reservoir
US6854970Jul 18, 2003Feb 15, 2005Frito-Lay North America, Inc.Extruder die injection nozzle
US7252847Jul 18, 2003Aug 7, 2007Frito-Lay North America, Inc.Flavored extruded food product
US7585532Sep 1, 2004Sep 8, 2009Frito-Lay North America, Inc.Apparatus and method for improving the dimensional quality of extruded food products having complex shapes
US7648352Jul 14, 2004Jan 19, 2010Frito-Lay North America, Inc.Apparatus for imprinting lines on direct-expanded food products having complex shapes with improved dimensional quality
US20040022910 *Jul 18, 2003Feb 5, 2004Keller Lewis ConradFlavored extruded food product
US20050019466 *Jul 14, 2004Jan 27, 2005Morales-Alvarez Jorge C.Apparatus and method for imprinting lines on direct-expanded food products having complex shapes with improved dimensional quality
US20050048180 *Sep 1, 2004Mar 3, 2005Moore Gary StevenApparatus and method for improving the dimensional quality of extruded food products having complex shapes
US20090291184 *Nov 26, 2009Gary Steven MooreApparatus and Method for Improving the Dimensional Quality of Extruded Food Products Having Complex Shapes
US20100074981 *Nov 30, 2009Mar 25, 2010Frito-Lay Of North America, Inc.Apparatus and Method for Imprinting Lines on Direct-Expanded Food Products Having Complex Shapes With Improved Dimensional Quality
Cooperative ClassificationB29C47/94