United States Patent [191

[11]

4,373,892

Nordmann

[45]

Feb. 15, 1983

[54]

[76]

APPARATUS FOR PREPARING BREAD

2,951,456

DOUGH

3,347,183

10/1967

3,596,613

8/1971

Inventor:

Joseph Nordmann, 3659 Paramount

Rldge La., Cincinnati, 01110 45239 [21] Appl. No.: 338,209 [22] Filed: Jan. 11, 1982 [51]

9/1960 Olgiati ............................... .. 425/367 Einstein et a1. . . . .

. . . .. 425/363

Roth

. . . ..

.......

425/305

3,880,069 4/ 1975 Moline .............................. .. 425/296

Prima'y Examiner?winard E~ Hoag Attorney, Agent, or Firm—Frost & Jacobs [57] ABSTRACT

Int. Cl.3 ........................ .. A21C 3/04; A21C 3/10;

Apparatus for preparing bread dough comprises a

A21C 3/02; A21C 11/10

hopper for bulk dough, a rotary pump communicating

[52]

US. Cl. .................................. .. 425/207; 425/297; 425/305.l; 425/308; 425/315; 425/324.1;

with the hopper, a die through which dough is extruded by the pump in a continuous ribbon, conveyor means

425/363; 425/377; 425/403.1

for receiving and conducting the ribbon of dough in

[58]

Field of Search .......... .. 425/ 289, 296, 297, 302.1,

succession through proo?ng means, guide rolls, means

425/305.1, 308, 312, 315, 363, 324.1, 383, 376 R, 377, 403, 200, 201, 207, 307, 403.1; 426/19

for cutting the ribbon of dough into individual pieces,

[56]

References Cited U.S. PATENT DOCUMENTS 1,900,607

3/1933

at least two further pieces. High production is achieved with a minimum of labor, and excessive working and

Kremmling ....................... .. 425/308

2,162,079

6/1939 Grabowski et a1. .

2,740,362

4/1956

means to roll the individual pieces into cylindrical shapes, and means to divide the cylindrical shapes into

kneading of the dough are avoided.

425/ 302.1

Elliott ............................... .. 425/308

10 Claims, 1 Drawing Figure

US. Patent

Feb. 15, 1983

4,373,892

4,373,892

1

2

vertical path of travel, substantially horizontal con veyor means for receiving said ribbon of dough from said guide rolls, means for cutting said ribbon of dough

APPARATUS FOR PREPARING BREAD DOUGH

BACKGROUND OF THE INVENTION into individual pieces of predetermined length while This invention relates to apparatus for preparing 5 traveling on said horizontal conveyor means, means to

roll said individual pieces into cylindrical shapes with

bread dough for baking by feeding, dividing and pan ning the dough without excessive working and knead ing thereof. More particularly, the apparatus of the invention is capable of high volume production with

the axes thereof transverse to the direction of travel of said horizontal conveyor means, means to divide said

individual pieces into at least two further pieces of sub stantially equal size, and means to convey and position

only two operators, and eliminates the conventional divider or scaler, and rounder needed in automatic

a pan beneath the end of said horizontal conveyor

bread making equipment. At the same time proo?ng of the dough is effected at least in part, thus avoiding the

means to receive said pieces of dough. BRIEF DESCRIPTION OF THE DRAWING The drawing is a diagrammatic plan view of appara

use of chemical additives which are considered objec tionable by many purchasers.

.

In the conventional production of bread by automatic machinery four operators are ordinarily needed, the

tus for preparing bread dough embodying the inven tion.

operation starting with dividing or scaling bulk dough into individual pieces of the desired weight, followed by

DETAILED DESCRIPTION

rounding the individual pieces, proo?ng and molding.

Referring to the drawing apparatus in accordance with the invention comprises a hopper 10 for receiving a supply of bulk dough. Preferably the hopper 10 is

The molded pieces are then placed in pans for baking.

Machinery presently available for effecting the above steps is bulky, expensive, time-consuming and labor intensive. Various prior art attempts at improvement of the above-described operation have been made. Reference may be made to US. Pat. Nos. 2,740,362; 2,951,456 and 3,347,183. In these patents bulk dough is formed into a continuous ribbon, out into desired lengths and con

downwardly and inwardly tapering so as to communi cate with a rotary pump 11. Good results have been 25 obtained with a rotary pump manufactured by Crepaco, Inc., CP No. 3R1. Pump 11 is driven by an electric

veyed through various subsequent operations. U.S. Pat. No. 2,740,362 discloses apparatus which is

alleged to eliminate rounding, proo?ng and molding, but this is accomplished by use of a solution containing an oxidizing agent or yeast food, such as bromate, so

dium metavanadate, sodium chlorite, and/or carbon ated water.

motor 12 having a suitable belt or chain drive. Such a

pump discharges a continuous ribbon of dough without exerting undue pressure or excessive working thereon, and the ribbon is extruded through a die 13. For dough

being prepared for one pound loaves of bread, the rib bon extruded through die 13 may be about 4 inches wide and one half inch thick, but it will be understood that different widths and thicknesses may be used for

other types of baked products.

The continuous ribbon of dough extruded through U.S. Pat. No. 2,951,456 provides an elongated ta die 13 is received on a ?rst conveyor means 14 which is pered hopper having a reduced opening at the lower upwardly inclined and which conducts the continuous end, means for introducing compressed air or other pressure medium into the hopper above the bulk dough 40 ribbon to a proo?ng means indicated generally at 15. The proo?ng means comprises a plurality of superposed for extrusion thereof through the reduced opening generally horizontal conveyor belts, six being shown by . under great pressure. way of example in the drawing as belts 16—21, respec US. Pat. No. 3,347,183 discloses apparatus for meter tively. The belts are arranged in parallel spaced relation ing bulk dough into “slugs” of desired size, including opposed rollers to knead the dough, a pair of forming 45 to one another, and each belt is adapted to move in a direction opposite to the direction of movement of the rollers comprising a channeled roller and a pressure adjacent belts, with the uppermost belt 16 moving in the roller, and cutting means to cut the formed dough into same direction of travel as ?rst conveyor means 14. It a plurality of slugs. will be noted further that the superposed conveyor belts It is a principal object of the present invention to are arranged in staggered relation to one another in provide apparatus for preparing bulk dough for baking order that the continuous ribbon will be deposited on which eliminates chemical conditioners or oxidizing each succeeding/lower belt and move in the opposite agents, the use of highly pressurized vessels with their direction, thereby conducting the continuous ribbon in consequent danger, and excessive kneading and work a sinuous path of travel. ing of the dough between rollers under pressure. It will be understood that this invention isnot con» 55

The continuous ribbon of dough exits the proo?ng

According to the invention there is provided an appa ratus for preparing bread dough which comprises a

means 15 from the lowermost conveyor belt thereof and is delivered to a second conveyor means 23 moving in the same direction as the lowermost belt of the proo?ng means, the second conveyor means 23 preferably being

downwardly tapering hopper for bulk dough, a rotary

downwardly inclined.

cerned with the initial mixing or preparation of the bulk

dough or the baking thereof after dividing and panning.

pump beneath said hopper, a die through which dough

The ?rst conveyor means 14, the conveyor rolls

is extruded by said pump in a continuous ribbon, ?rst

16-21 and the second conveyor means 23 are preferably

driven by a single electric motor (not shown) and all conveyor means for receiving said ribbon of dough travel at the same rate of speed by means of suitable belt from said die, proo?ng means through which said rib bon of dough is conducted for a predetermined period 65 or chain drives (not shown). The speed of travel of these belts may be varied by a controller such as a rheo of time, second conveyor means for receiving said rib stat connected to the drive motor in order to vary the bon of dough from said proo?ng means, guide rolls for conducting said ribbon of dough through a substantially production rate and the time interval for passage of the

4,373,892

3

dough through the proofer 15. It will of course be un derstood that the time interval in the proofer may also be varied by increasing or decreasing the number of horizontal conveyor belts therein upon which the dough is conducted in a sinuous path of travel. Similarly, a rheostat is provided in connection with drive motor 12 for rotary pump 11 in order to vary the rate at which dough is extruded through die 13. Individ ual speed controls on drive motor 12 and the motor driving ?rst conveyor means 14, horizontal belts 16-21 in proofer 15 and second conveyor means 23 make

possible optimum variation in production rates and accommodation for different widths and thicknesses of

the continuous ribbon of dough. Proo?ng means 15 is preferably provided with an

4

insufficient to prevent each roll 51 from being carried in the direction of travel of conveyor 29. Adjacent the

trailing edge of the planar surface 31 there is provided at least one downwardly depending cutting surface 32 parallel to the direction of travel of the conveyor which

is contacted by each roll of dough 51, thereby further subdividing each roll into two or more sections indi cated at 51a, which are of, the desired size for baking in

the form a loaf. By way of non-limiting example, each piece 51a may be about one pound in weight so as to

provide a standard-size loaf upon baking. After passage beyond the cutting means 32, the loaf sized pieces 51a drop off the edge of conveyor 29 onto a conventional baking pan or bun pan indicated at 33. Pan 33 is supported on a chain conveyor 34 and an

enclosure indicated at 22 in broken lines to control

appropriate stop (not shown) is provided adjacent the

temperature and humidity within proo?ng means 15

end of chain conveyor 34 in order to hold pan 33 in position to receive the loaves from conveyor 29. When

and to ensure cleanliness.

The continuousribbon of dough is conducted by the

pan 33 is completely loaded with loaves it is removed

second conveyor means 23 past a counter rotating roll 20 manually by an operator and placed in a separate proof

24 positioned at a slightly higher level than the dis

box for appropriate further conditioning, if needed,

charge end of the belt on conveyor means 23 in order to

before baking in an oven.

divert the continuous ribbon of dough into a substan

Immediately upon removal of pan 33, the chain con

tially vertical path of travel downwardly, and the rib

veyor 34 conducts the next in a series of additional pans

bon of dough then passes between a pair of counter

35 into position beneath the end of conveyor 29. Adja

rotating driven guide rolls 25 and 26 spaced apart by a

cent the opposite end of chain conveyor 34 a stack of

distance sufficient to compress the ribbon of dough slightly upon passage therebetween. The continuous ribbon of dough then passes from

pans 35 is provided, and mechanism indicated generally at 40 is operative to release one pan at a time down

stantially horizontal conveyor belt 27, moving in a di rection opposite to the upper ?ight of second conveyor means 23. A rotatable knife blade 28 is positioned above conveyor 27 with the blade transverse to the direction of travel of the ribbon of dough. The knife blade 28 is rotated at a speed relative to the speed of travel of the

wardly to be conducted by chain conveyor 34 toward the end of conveyor 29. A main electric motor is provided with a speed con troller (not shown) in the form of a rheostat or the like with drive belts or chains to the rolls 24, 25 and 26, the conveyors 27 and 29, the chain conveyor 34 and the pan loader 40. All these elements are thus adapted to oper ate in timed relation to one another and the rate of

ribbon of dough on conveyor 27 such that it will cut the

travel of, e. g. the conveyors 27 and 29, is related to the

guide rolls 25 and 26 onto the upper surface of a sub

rotational speed of the guide rolls 25 and 26 to ensure continuous production equal to the amount of dough needed for two loaves of In summary, the pump 11 is adapted to be operated at bread. Preferably a separate motor and rheostat control 40 a variable speed independent of the other elements. The (not shown) are provided for rotation of the knife means conveyor 14, the belts 16-21 in the proofer and the 28 in order that the speed of rotation may be controlled conveyor 23 are adapted to be operated at varying independent of the speed of travel of the ribbon of

ribbon into individual pieces of desired length, e.g.

dough on conveyor 27.

'

A second horizontal conveyor indicated at 29, may be provided aligned in end to end relation with con

veyor 27. By thus providing relatively shorts ?ights between the drive rolls of conveyors 27 and 29, sag in the conveyor belts is minimized.‘ After the ribbon of dough is cut into individual pieces by rotating knife means 28, one such piece being indi cated at 50 in the drawing, the pieces are conducted by conveyor 27 under a “curling chain” indicated at 30.

speeds independent of the other elements. The guide rolls 24-26, conveyors 27 and 29, conveyor 34 and pan loader 40 are adapted to be operated at variable speeds independent of the other elements. The rotatable knife 28 is adapted to be operated at a variable speed indepen dent of the other elements. It is apparent from the above description that the

present invention‘ achieves the objective of providing apparatus for preparing bulk dough for baking which eliminates the use of highly pressurized vessels, exces

sive kneading and working of the dough, and a high The curling chain is positioned parallel to the upper surface of conveyor 27 and comprises a plurality of 55 production rate while at the same time requiring only two operators. The speeds of the various elements can ?exible chain link or mesh elements the trailing ends of be varied in order to accommodate products of varying which contact the upper surface of the conveyor belt sizes, and the time required for preparation can be var 27. As the pieces 50 are conducted under the curling ied to suit the conditioning of the particular type of chain 30, the weight of the chain links or mesh is suffi cient to cause each piece of dough to be rolled up or 60 dough being prepared for baking. While a preferred embodiment has been described, curled into a substantially cylindrical shape as shown at the invention is not so limited, and modi?cations may be 51. These are spaced apart at regular intervals on the made without departing from the spirit and scope of the conveyor surfaces 27 and 29. invention. Adjacent the end of conveyor ?ight 29 a planar sur face indicated at 31 is provided substantially parallel to 65 I claim: 1. Apparatus for preparing bread dough, comprising the belt of conveyor 29 and positioned above the belt a a downwardly and inwardly tapering hopper for bulk distance sufficient to admit each successive cylindrical dough, a rotary pump beneath said hopper communicat roll of dough 51 and to exert slight pressure thereon

5

4,373,892

6

ing therewith, a die through which dough is extruded

rotating knife blade is adapted to be varied indepen

by said pump in a continuous ribbon, ?rst conveyor

dently.

means for receiving said ribbon of dough from said die, proo?ng means through which said ribbon of dough is conducted for a predetermined period of time, second conveyor means for receiving said ribbon of dough from said proo?ng means, guide rolls for conducting said ribbon of dough through a substantially vertical path of travel, substantially horizontal conveyor means for receiving said ribbon of dough from said guide rolls, means for cutting said ribbon of dough into individual

5. The apparatus claimed in claim 1, wherein said means to roll said individual pieces of dough into cylin drical shapes comprises a plurality of ?exible chain lengths overlying said horizontal conveyor means. 6. The apparatus claimed in claim 1, wherein said means to divide said individual pieces into at least two

further pieces comprises at least one knife blade posi 0

tioned in close overlying relation to said horizontal conveyor means and parallel to the direction of travel

pieces of predetermined length while traveling on said

thereof. 7. The apparatus claimed in claim 1, wherein said proo?ng means comprises a plurality of superposed

horizontal conveyor means, means to roll said individ

ual pieces into cylindrical shapes with. the axes thereof

transverse to the direction of travel of said horizontal 5 conveyor belts arranged in parallel spaced relation to conveyor means, means to divide said individual pieces one another, each belt being adapted to move in a direc

into at least two further pieces of ‘substantially equal

tion opposite to the direction of movement of adjacent

size, and means to convey and position a pan beneath the end of said horizontal conveyor means to receive

belts, whereby to conduct said ribbon of dough depos

pump is adapted to vary independently the rate of extru

ited thereon in a sinuous path of travel. 8. The apparatus claimed in claim 7, wherein the speed of travel of said‘ ?rst and second conveyor means and said plurality of superposed conveyor belts is

sion of said dough.

adapted to be varied in unison.‘

said futher pieces of dough.

20

2. The apparatus claimed in claim 1, wherein said ‘

~ -

9. The apparatus claimed in claim 1, wherein said

3. The apparatus claimed in claim 1, wherein the

speed of travel of said horizontal conveyor means and 25 means to convey and position a pan comprises a hori said means to convey and position a pan, and the speed zontal chain conveyor positioned beneath said horizon of rotation of said guide rolls are adapted‘ to be varied in tal conveyor means and moving in the same direction and in timed relation therewith. unison. 10. The apparatus claimed in claim 9, including means 4. The apparatus claimed in claim 1, wherein said means for cutting said ribbon of dough is a rotating to deposit one tray from a superposed-stack of trays onto said horizontal chain conveyor. knife blade disposed transverse to the direction of travel #

of said ribbon, and wherein the speed of rotation of said 35

45

50

55

65

‘I

it

i

*

Apparatus for preparing bread dough

Jan 11, 1982 - ated water. U.S. Pat. No. .... these belts may be varied by a controller such as a rheo ... enclosure indicated at 22 in broken lines to control.

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