Automatic molding apparatus for producing ring-shaped doughnuts containing fillings

Claim 2

An automatic molding apparatus for producing ring-shaped doughnuts containing fillings, comprising a dough hopper and a filling hopper coaxially arranged in said dough hopper, each of which has an inlet opened to the air at the upper end so as to receive dough and filling under atmospheric pressure at a desired time, a dough outlet pipe vertically disposed and connected with said dough hopper, a filling outlet pipe coaxially positioned in said dough outlet pipe and connected with said filling hopper, a spiral feed blade for forcing dough down the dough outlet pipe, means to force said filling down said filling outlet pipe, a cutting flange having the same outside diameter as of said material outlet pipe and fixed to one end of said filling outlet pipe so as to form an annular material outflow port between it and said material outlet pipe, a delivery means connected with said filling pipe and having the same outside diameter as said material outlet pipe for forming an annular filling delivery port below said cutting flange, a sleeve fitted to be slidable up and down on the outer peripheral surface of said material outlet pipe and having a blade edge at its lower tip edge, and a mechanism for controlling said filling force means and elevating and lowering said sleeve in desired timed relationships, wherein said means to force said filling includes a reciprocating piston fitted in said filling outlet pipe and wherein said piston is provided with a one-way valve which closes on its withdrawal to pass said filling.

Claim 3

An apparatus according to claim 1 wherein said mechanism includes a motor driving a shaft, a plurality of cams on said shaft, rollers following said cams, and links connected to said rollers and also connected to said piston and said sleeve.

Claim 4

An automatic molding apparatus for producing ring-shaped doughnuts containing fillings, comprising a dough hopper and a filling hopper coaxially arranged in said dough hopper, each of which has an inlet opened to the air at the upper end so as to receive dough and filling under atmospheric pressure at a desired time, a dough outlet pipe vertically disposed and connected with said dough hopper, a filling outlet pipe coaxially positioned in said dough outlet pipe and connected with said filling hopper, a spiral feed blade for forcing dough down the dough outlet pipe, means to force said filling down said filling outlet pipe, a cutting flange having the same outside diameter as of said material outlet pipe and fixed to one end of said filling outlet pipe so as to form an annular material outflow port between it and said material outlet pipe, a delivery means connected with said filling pipe and having the same outside diameter as said material outlet pipe for forming an annular filling delivery port below said cutting flange, a sleeve fitted to be sLidable up and down on the outer peripheral surface of said material outlet pipe and having a blade edge at its lower tip edge, and a mechanism for controlling said filling force means and elevating and lowering said sleeve in desired timed relationships and also including a plurality of molding bowls which close to form a ring mold and which surround the outside of the sleeve from both sides, and means to elevate and lower and open and close said bowls.

Claim 5

An automatic molding apparatus for producing ring-shaped doughnuts containing fillings, comprising a dough hopper and a filling hopper coaxially arranged in said dough hopper, each of which has an inlet opened to the air at the upper end so as to receive dough and filling under atmospheric pressure at a desired time, a dough outlet pipe vertically disposed and connected with said dough hopper, a filling outlet pipe coaxially positioned in said dough outlet pipe and connected with said filling hopper, a spiral feed blade for forcing dough down the dough outlet pipe, means to force said filling down said filling outlet pipe, a cutting flange having the same outside diameter as of said material outlet pipe and fixed to one end of said filling outlet pipe so as to form an annular material outflow port between it and said material outlet pipe, a delivery means connected with said filling pipe and having the same outside diameter as said material outlet pipe for forming an annular filling delivery port below said cutting flange, a sleeve fitted to be sLidable up and down on the outer peripheral surface of said material outlet pipe and having a blade edge at its lower tip edge, and a mechanism for controlling said filling force means and elevating and lowering said sleeve in desired timed relationships and also including a plurality of molding bowls which close to form a ring mold and which surround the outside of the sleeve from both sides, and means to elevate and lower and open and close said bowls.

Claim 6

An apparatus according to claim 3 wherein the means for elevating and lowering and opening and closing said bowls is a cam and link mechanism which operates at predetermined times.

Claim 7

An apparatus according to claim 3 wherein said molding bowls have such cross-sections as will form a closed annular space when they surround the sleeve from both sides.

Claim 8

An apparatus according to claim 3 wherein said molding bowls have cross-sections which form an annular space opened on the lower end surface when they surround the sleeve from both sides.

Claim 9

An apparatus according to claim 3 wherein said cutting flange is in the form of a flat plate, said means for forming a filling delivery port is a cutting blade disk secured with a fixed clearance from the cutting blade flange to the lower end of a supporting shaft provided in the center of the filling outlet pipe and said molding bowls surround the outside of the sleeve from both sides and can be elevated and lowered and opened and closed, and a mechanism for elevating and lowering and opening and closing said molding bowls in a timed relation with reciprocating said piston.

Claim 10

An apparatus according to claim 7 wherein said molding bowls have such cross-sections as will form a closed annular space when they surround the sleeve from both sides.

Claim 11

An apparatus according to claim 7 wherein said molding bowls have such cross-sections as will form an annular space opened on the lower end surface when they surround the sleeve from both sides and have an elastic disk of such size as will receive the lower end portion of the outflow dough material with a proper clearance from and below said cutting blade cylinder.

Claim 12

An automatic molding apparatus for producing ring-shaped doughnuts containing fillings, comprising a dough hopper and a filling hopper coaxially arranged in said dough hopper, each of which has an inlet opened to the air at the upper end so as to receive dough and filling under atmospheric pressure at a desired time, a dough outlet pipe vertically disposed and connected with said dough hopper, a filling outlet pipe coaxially positioned in said dough outlet pipe and connected with said filling hopper, a spiral feed blade for forcing dough down the dough outlet pipe, means to force said filling down said filling outlet pipe, a cutting flange having the same outside diameter as of said material outlet pipe and fixed to one end of said filling outlet pipe so as to form an annular material outflow port between it and said material outlet pipe, a delivery means connected with said filling pipe and having the same outside diameter as said material outlet pipe for forming an annular filling delivery port below said cutting flange, a sleeve fitted to be slidable up and down on the outer peripheral surface of said material outlet pipe and having a blade edge at its lower tip edge, and a mechanism for controlling said filling force means and elevating and lowering said sleeve in desired timed relationships wherein there are provided a plurality of hoppers for fillings, a plurality of separated filling outlets together forming an annular outlet, and a means for conveying said fillings from said hoppers to the filling outlets without mixing the fillings with each other.

Claim 13

An automatic molding apparatus for producing ring-shaped doughnuts containing fillings, comprising a dough hopper and a filling hopper coaxially arranged in said dough hopper, each of which has an inlet opened to the air at the upper end so as to receive dough and filling under atmospheric pressure at a desired time, a dough outlet pipe vertically disposed and connected with said dough hopper, a filling outlet pipe coaxially positioned in said dough outlet pipe and connected with said filling hopper, a spiral feed blade for forcing dough down the dough outlet pipe, means to force said filling down said filling outlet pipe, a cutting flange having the same outside diameter as of said material outlet pipe and fixed to one end of said filling outlet pipe so as to form an annular material outflow port between it and said material outlet pipe, a delivery means connected with said filling pipe and having the same outside diameter as said material outlet pipe for forming an annular filling delivery port below said cutting flange, a sleeve fitted to be slidable up and down on the outer peripheral surface of said material outlet pipe and having a blade edge at its lower tip edge, and a mechanism for controlling said filling force means and elevating and lowering said sleeve in desired timed relationships wherein there are provided a plurality of hoppers for fillings, a plurality of separated filling outlets together forming an annular outlet, and a means for conveying said fillings from said hoppers to the filling outlets without mixing the fillings with each other.

Claim 14

An automatic molding apparatus for producing ring-shaped doughnuts containing fillings, comprising a dough hopper and a filling hopper coaxially arranged in said dough hopper, each of which has an inlet opened to the air at the upper end so as to receive dough and filling under atmospheric pressure at a desired time, a dough outlet pipe vertically disposed and connected with said dough hopper, a filling outlet pipe coaxially positioned in said dough outlet pipe and connected with said filling hopper, a spiral feed blade for forcing dough down the dough outlet pipe, means to force said filling down said filling outlet pipe, a cutting flange having the same outside diameter as of said material outlet pipe and fixed to one end of said filling outlet pipe so as to form an annular material outflow port between it and said material outlet pipe, a delivery means connected with said filling pipe and having the same outside diameter as said material outlet pipe for forming an annular filling delivery port below said cutting flange, a sleeve fitted to be slidable up and down on the outer peripheral surface of said material outlet pipe and having a blade edge at its lower tip edge, and a mechanism for controlling said filling force means and elevating and lowering said sleeve in desired timed relationship, wherein said cutting flange is in the form of a flat plate and said means for forming a filling delivery port is a cutting blade cylinder which is fitted to the lower end of a supporting shaft provided in the center of the filling outlet pipe and wherein an elastic disk is fixed to the said supporting shaft below the said cutting blade cylinder.

Claim 15

An automatic molding apparatus for producing ring-shaped doughnuts containing fillings, comprising a dough hopper and a filling hopper coaxially arranged in said dough hopper, each of which has an inlet opened to the air at the upper end so as to receive dough and filling under atmospheric pressure at a desired time, a dough outlet pipe vertically disposed and connected with said dough hopper, a filling outlet pipe coaxially positioned in said dough outlet pipe and connected with said filling hopper, a spiral feed blade for forcing dough down the dough outlet pipe, means to force said filling down said filling outlet pipe, a cutting flange having the same outside diameter as of said material outlet pipe and fixed to one end of said filling outlet pipe so as to form an annular material outflow port between it and said material outlet pipe, a delivery means connected with said filling pipe and having the same outside diameter as said material outlet pipe for forming an annular filling delivery port below said cutting flange, a sleeve fitted to be slidable up and down on the outer peripheral surface of said material outlet pipe and having a blade edge at its lower tip edge, and a mechanism for controlling said filling force means and elevating and lowering said sleeve in desired timed relationship, wherein said cutting flange is in the form of a flat plate and said means for forming a filling delivery port is a cutting blade cylinder which is fitted to the lower end of a supporting shaft provided in the center of the filling outlet pipe and wherein an elastic disk is fixed to the said supporting shaft below the said cutting blade cylinder.