USRE22875E

USRE22875E - Bun making machine

Info

Publication number: USRE22875E
Authority: US
Publication date: 1947-05-06

Description

May 6 1947- l w. c. GRIMM TAL Re. 22,875

BUN MAKING MACHINE May 6, 1947- w. c. GRIMM ETA. Re. 22,875

BUN MAKING MACHINE .s` sheets-shet 2 Original Filed Jan. 6, 1945` um my I N VEN TORS /TTURNEKS May 6, 1947- n w. c. GRIMM ETAL Re. 22,875

BUN MAKING MACHINE- 3 sheets-sheet 3 Original Filed Jan. 6, 1942:.'

11" In winni Wai/1m] Mmm *22m/@gigs Reissued May 6, 1947 22,875 BUN MAKING MACHINE William C.

Jersey City,

Grimm and Richard H. Linneman,

N. J., assignors, by mesne assignments, to General Baking Company,

New York,

N. Y., a corporation of New York Original No. 2,354,681, dated Serial No. 471,514, January 6, tion for reissue January 3,

17 Claims.

The present invention relates to dough handling and shaping machinery and, more particularlyI to such mechanisms adapted for forming, from elongated rolls of dough, buns and the like particularly adapted for human consumption.

A general object of the present invention is the provision in such mechanism of eiiicient means for forming a roll of dough and effectively delivering it in a certain defined path, and shearing` means associated therewith successively to cut buns of desired length from the roll of dough in a sure and rapid manner which avoids unduly flattening, squeezing and misshaping them, whereby such buns of excellentshape can be produced from dough batches entirely automatically in a very rapid and economical manner, thereby preserving the dough from excessive handling, veliminating the necessity of employing skilled workmen and conserving time and skilled manpower.

A more specific object of the invention is the provision of such mechanism characterized by a shearing device which operates so quickly as to avoid undue interference with continuous travel oi a dough roll and undesirable bulging or swelling of the leading end thereof as buns are severed therefrom, as `well as 'undesirable flattening or misshaping of the buns so that the latter suiliciently retain the desired substantially cylindrical shape.

Another object of the invention is the provision in such mechanism of cooperating shear blades so constructed and operated as to reach over a moving roll of dough, engage around it and swiftly shear through it, with a substantially encompassing action as distinguished from the bun-flattening and splaying shear of the roll which would result from the use of ordinary blades.

A further object of the invention is the provision in such machinery of eflicientl driving means whereby a common source of power drives the roll forming and delivering mechanism at a predetermined speed and may drive the shearing device at such coordinated but manually variable speed as may be desired to form buns of a desired length and `permit alteration thereof at will without interfering with the speed of the roll forming and delivering means.

Still another object is the provision of a manually rcontrolled variable speed drive for such shearing device; and means effectively to permit with continuous operation of shear blades sunlciently slow movement between the shear-'completed and shear-preparatory positions thereof August 1, 1944, 1943. Applica- 1947, Serial No.

as to provide for unusually long rolls While providing sufficiently rapid movement thereof from the latter position to the former during shearing as eectively to avoid undue distortion of the roll and buns severed therefrom. Other objects of the invention will in part be obvious and will in part appear hereinafter..

The invention accordingly comprises the features of construction, combination of elements and arrangement of parts, which will be exemplied in the construction hereinafter set forth and the scope of the invention will be' indicated in the claims. For a fuller understanding of the nature and objects of the invention, reference should be had to the following detailed description taken in connection with the accompanying drawings, in which: f

Fig. l is a top plan view, with parts broken away and omitted for clarication, of an embodiment ofthe present invention;

Fig. 2 is a front elevational view, with parts broken away, of the structure shown in Fig. 1;

Fig. 3 is an enlarged detailed elevational view, with parts broken away, of the dough coiling mechanism and dough roll shearing mechanismshown in Figs. l and 2;

Fig. 4 is an end elevational view, with parts broken away, of structure shown in Fig. 3 looking from right to left thereof;

Fig. 5 is an end elevational view, with parts broken away, of structure shown in Fig. 3 looking from left to right thereof;

Fig. 6 is an enlarged end elevational view of certain oi the driving mechanism structure of the device shown in Figs. l and 2;

Fig. '7 is a front elevational view, with parts broken away, of a modied form of the structure shown in Fig. 3;

Fig. 8 is an end elevational view, with parts broken away, of structure shown in Fig. 'l looking from right to left thereof;

Figs. 9 and 10 are views similar to Figs. 7 and 8 of a still further modified form of the present invention; and

Fig. 1l is a view similar to Figs. 8 and 10 of another modied form of the present invention.

Prior to the present invention many attempts have been made to devise machinery to produce certain bakery products other than by skilled hands. These attempts have been unsuccessful and prior to the present invention no one yinsofar as is known in the commercial trade and practical art proposed or suggested a practical mechanism capable of eiilcient commercial op- .of the machine,

eration in the production of buns and the like from elongated rolls of dough, more particularly cinnamon buns and similar products. As is well known some such products are commonly prepared by applying to surfaces of "and/or mixing into sheets of dough, desired additives such as oil, cinnamon, raisins, etc., coiling up the sheets into rolls and thereafter cutting relatively short sections from the rolls. Even the most skillful of workmen can produce suchpproducts in only very limited quantities and with the use of implements such as were available which resulted in misshaped, flattened buns splayed at the ends requiring a reshaping hand manipulation. These and other difficulties of the prior art have been greatly ameliorated if not entirely overcomeby the present invention which permits rapid production in an entirely automatic manner of wellshaped buns and like products.

An embodiment of the present invention shown by way of example in the accompanying drawings is particularly designed for the employment preferably comprise a pair of depending shear blades mounted substantially above and over the defined path at a certain distance which will permit the blades to cooperate when at least the conveying means and quickly she-ar through it with a substantially encompassing action. This action is so performed that the continuous movement of the dough roll will not cause the leading end thereof to be bulged or swelled by being jammed against such shearing structure to any or degree of any consequence.

on their, ends. In `the preferred embodiment vblades are mounted on oppositely rotating supporting structure to cause the blades to describe circles in opposite directions, with such mechavnism being preferably driven through a variable .speed device from the source of power employed to operate the endless conveyor,v the coiling or roll forming device and any other mechanism such as the ingredients applicators.

The present invention will be readily understood by reference to the accompanying drawings wherein a particular embodiment thereof is shown and like parts thereof are identified by like numerals throughout. Upon suitable' supporting structure a pair of rolls I0, I il are rotatably mounted, preferably at about the same elevation, with their axes arranged horizontally. A table top Il or other substantially at support is arranged between the rolls I0, Hl and over the top surfaces thereof an endless conveyor, such as a belt l2, is moved by the rolls l0, I0. Only one of these two rolls l0, I0 need be driven,

such as by a, sprocket i3, fixed preferably on the rolls and driven by a back end of one of the chain I 4 from a sprocket l5 fixed on a shaft I6 carrying a sprocket Il in turn driven by a chain I8 from a sprocket I9 fixed on a drive shaft 20 and belt, or sprocket and endless chain, a power source such as an electric motor (not shown). Certain of these shafts, sprockets or chain drives may also be employed to operate other mechanism such as sheeting rolls and ingredients applicators in certain .definite relation to the speed and operation of the endless conveyor or belt I2.

Upon the table top H is suitably mounted supporting

plates

22 and 23 arranged angularly to the length of the table. A coiling roll 24 is rotatably supported by the

plates

22 and 23 slightly above the belt l2 so that the latter may gle such as about 30 As shown in Figs. 2 away at 25 in front to provide for free to the edge of the belt I2. and 4 end plate 23 is cut of the coiling roll 24 so as same direction as that in which the rolls l0, I0 revolve so that the surface of roll 24 opposes travlz therebeyond of a dough sheet carried by be t The shearing mechanism preferably comprises two

shearing blades

34 and 35 which may be mounted for rotation in opposite directions upon the support plate 23 by fixing the outermost blade 34 to a shaft 3E rotatably mounted within a sleeve 31 in turn rotatably supported by the

support plates

22 and 2 The other blade 35 maybe iixedly mounted upon" the sleeve 3l so 36 may proJect from the fixed to the back end of the "softest-the shaft will-be driven Vfrom opposed faces sacre to drivev through 'a chain. 4i a sprocket 42' keyed to the endo: the sleeve 31, so that as the chain 59 drives theshaft 36 in one direction the sprocket: 42 will drive the sleeve 31 in the opposite direction. As shown in Fig. 4 each shear blade comprises ja; portion 143 extendingv substantially radially 'from its supporting means, such as the shaft 36 or the sleeve 31 es the case may be, and an end portion 44 turned inwardly toward the other blade. Although such blades may be of any 'suitable shape in which they cooperate by encompassing Aa dough roll as they vare movedtoward each other to shear the latter, they are preierably so -formed as to have the end portion 44 of each arranged substantially at a right vangle 'to the remaining portion 143. rIhe leading edges of these blades are preferably sharpened to provide a continuous cutting edge 45 on both

portions

43 and 44 and the inwardly turned portions 144, 44 are preferably Atapered 'substantially lto a point so as readily to engage beneath .a dough Iroll while it 'is being moved endwise by cooperation of the coi-ling roll 24 and the endless belt l2. v"The 'ommon axis 46 of lthe blades 34 and 3511s preferably arranged substantiallyzlbove the definedpat'h along whichthe-dough roll 'is moved, at such a distance that the `inturned portions 44, '44101 the

blades

34 and 35 lwill lust clear'the upper surface of the endless belt l2 or, if desired, lightly contact the same as ends thereof move toward each other beneath the roll of dough to pick upthe latter.

lt is desired rto provide -for manual variation -of the speed of operation of the shear blades `within certain limits so that different lengths of buns sheared from 'the lend Aof the roll of-dough moved at a certain speed along a defined `path beneaththe blades may be obtained at will. This may be accomplishedby introducing between the main drive shaft 2l) andthe mechanism moving the blades "-34 and '-155 any suitable ldevice which may be manually adjusted vfor speed variation. Such mechanism lmay comprise-a shaft 41, driving chain '39, and to vwhich is'keyedva pulley 48 drivenby a belt 49 from a divided pulley struc- "tureA 59 keyed for rotation with a shaft structure 5l driven from the shaft 3| by any suitable means, such as gears 52'and 54 mounted thereon with interposed pinions 453, 53 trained therewith shaft 3| in the opposite direction of rotation. The divided pulley structure 5D is of known construcl'tion and may comprise two plates biased toward each 'other and 'peripherally chamfered on their to provide together'a substantially V-shaped groove for reception of the belt 449. The `shaft assembly 5l for the divided pulley 5l! is supported by vanysuitable means permitting it to be moved farther away from the pulley 48 and may comprise swinging

supports

55, 55 against atleast one 'of vwhich 'may be operated a hand screw LL'x'itl'lreadably mounted -in a fixed support Else that the distance between the shafts 41 and "5 I may be increasedat will to causel the 'two' plates of Vthe divided pulley 5B to be separated, thereby decreasing the diameter of the working circle 'thereof den'ed by Athe line of contact with the belt `49, thus to reduce the speed of the mechanism 'drivingthe shear blades. The speed of the latter maybe increased vby `permitting the shaft 5l to'move closer-tothe shaft-41 such `as by the linfluence of suitable biasing mechanism, as spring means biasing the plates-of the divided pulley-5t towardeach other.

finthe Yoperation fof the kdevice vjust described aa'elongated sheet of dough may be continuously ted to the rotating belt l2 from the lefthand end of the table structure as shown in Figs. l and 2. Such elongated sheet of dough, a'portion of which is shown at 58 will be carried past any desired suitable ingredients applying mechanisms, such as a water applicator to wet down the near edge of the sheet of dough to increase the desired adhesion ofthe rolled layers of dough, an applicator to spread oil on the upper surface of the dough sheet to prevent undesired blending of dough layers, .a cinnamon spreader and, if desired, a raisin distributor to feed .such ingredients to the upper surface of the `dough sheet. The end of the dough Vsheet 58 then is fed to the ceiling roll 24 at an oblique angle as shown in Fig. 1 and with the end 'of `the dough sheet properly fed to the coiling roll 24 the latter will spirally coil or `roll the dough sheet back continuously into a spiralled vroll 59 which will 'be lgradually moved lengthwise by the cooperating .counter-movements of .belt l2 and roll 24, substantially inthe direction of the axis of roll 24 through the space 25 in the yend plate 23, so that the shearing device will successively shear buns from the .end of the roll of dough as it moves away from in front of the cgiling roll-24.

It will be understood from Figs. 3, 4, 5 and 6 that as the ceiling roll Mis rotated in aclockwise direction as there viewed, the outermost shearing blade 34 rotates in a l.countercloclrwise direction and the innermost shearing blade 3,5 rotates clockwise so that as the .spiralled dough roll 59 moves through the space 25 the

shearing blades

34 and 35 are rotated to approach Veach other and engage 4their

inturned portions

44, 44 beneath the dough roll. Thereafter as .the shearing blades approach each other or `move from the shear- `preparatory ypositions vshown .in Fig. 4 to shearcompassing action-thus avoiding tendency to distort unduly :the bunfsevered from the end of the spiralled'rollandthe roll itself.

The :speed of rotation of the .blades -34 and35,

`which Vis. determined `by the setting of the hand screw 56, determines the .lengths .of the A,buns which are severed from .the end of :the YSpiralled dough roll, moved -at a constant speed through the space 25 -bycooperationof the coiling roll 24 Aand the conveying belt l2. .It will `be:understom however, Vthat the blades wise rotation willtend to'throw each bun as it is severed from the dough rollrtoward the center of the conveying belt i2, rather -than'toward the nearedge thereof, for eicient kdeliversr from the end of the machine.

"Modifications of the invention are shown .in Figs. 7,8,9 and 110 Where one of .thetwofshearing 'blades may be xedtothe .end platestructure23, orvother suitable supporting structure, withthe other :blade rotated relative thereto. iFor example,as shownin Figsg'l-ahd 8, a blade `134 .may be loosely mounted on the end of shaft lizandbe caused to rotate therewith v.by Such :means may `comprise a helical spring ,Ell disabout the suertes with .one endflxed to .the

.blade IM'and theother YAend .fixed to a collarll 7 keyed to the shaft for rotation therewith. Blade |35 is suitably fixed to the support plate 23 in position to cooperate with blade 34 but preferably in such a position as to be slightly out of the normal path of the dough roll 59 and buns may be successively severed from the end of the spiralled dough roll 59 by rotation of the shaft 36.

As further proposed in Figs. 7 and 8 the rotating blade |34 may be caused to travel through angular portions of its path at different speeds so that unusually long buns may be formed while assuring suiliciently rapid operation of the shearing action to avoid undue swelling of the end of the dough roll. This may be accomplished with the'use of the helical spring 60 and collar 6| providing a loose coupling between the rotating blade |34 and the shaft 36 in association with a suitable blade checking device, such as a pin 62 reciprocatively mounted in a boss 63 on the end plate 23 and biased by a helical spring 64 to an outward position across the path of the blade I 34. 'Ihus as the blade |34 is slowly rotated to engagement with the end of the pin 62, it is stopped in its movement by the latter in a shear-preparatory position. Continued rotation of the shaft 36 causes the helical spring 60 to be wound up increasingly biasing the blade 34. Eventually the biasing force of helical spring 6D will overcome the biasing force of helical spring 64 causing the blade |34 to move the pin 62 back out of its path and thereafter permit the blade quickly to be carried forward toward the blade |35 to cooperate with the latter in picking up the dough roll 59, encompassing it and shearing through it at a relatively rapid speed.

Instead of depending entirely upon a careful selection of dimension of parts and spring stock in structure such as that shown in Figs. 7 and 8 to predetermine with a fair degree of accuracy the moment at which the blade |34 releases itself from the shear-preparatory position, a structure :similar to that proposed in Figs. 9 and 10 may lbe utilized wherein a moving blade 234 is provided with a, boss 65 in which is loosely received v.the end of the rotating shaft 36. The latter is fitted with a pin 66 transversely extending therethrough with the ends thereof located in diametrically opposed slots 61, 61 in the boss 65 for limiting the angular movement of the blade 234 relative to the shaft 36. In such structure the blade 234 may be biased to a leading position by springs such as 68, 68 and a device for temporarily holding the blade 234 in a shear-preparatory position may be similar to the pin structure 62 shown in Fig. 7. Accordingly as the blade 234 is moved to abut against the pin 62 the latter will stop the blade 234 and temporarily hold it during continued rotation of the shaft 36 until the pin 6 in the slot 61, 61 assumes a Fig. 10. Pin 62 will then be retracted permitting blade 234 to be rapidly carried forward by action of the highly stressed springs 68, 68.

A structure similar to that shown in Figs. 9 and 10 is compact and well adapted with slight variations to permit such mounting of one or both of a, pair of revolving shearing blades. In such case, of course, the outermost blade must be temporarily stopped by a suitable structure mounted from the outside so that it will not interfere with the operation or complete rotation of the inner blade.

It will further be understood that the shearing blades may be oscillated back and forth from shear-preparatory positions to shear-completed Vpositions and vice versa instead of being completely rotated. Such a modication is proposed in Fig. 11 where each of shearing b1ades334'and 335 is provided with an arm 69 having an elond slot 1l) therein to receive arider such as a pin 1| xed on the end of a crank arm 12 suitably rotated by a shaft 13. Continuous rotation of the shafts 13, 13 and the crank

arms

12, 12 therewith will thus cause the

shearing blades

334 and 335 to be oscillated back and forth and, if desired, the shearing blades may be mounted at 14 by suitable carriage means so that they will move forward roll 59 during their movement shear through the shear-preparatory positions to the shear-completed positions, severing a, bun from the end oi the dough roll. f

Although a preferred embodiment of the present invention has been devised for eiiicient employment in connection with the production of edible buns it is obvious that the use thereof, or

present invention.

It will thus be seen that the objects set forth above are attained in an eiiicient manner and which. as a matter of langauge, fall therebetween.

passing action.

3. In a bun making machine, the combination with means to move an elongated roll of dough g a defined path subntiaily in' the direction of its; axis, ofy a roll shearing device comprising a pair oi depending shear blades pivotally mounted at a common axis substantially above the defined path, each. blade having the. lower end portion thereof turnedv inwardly towardthe other blade to engage beneath such roll, and means to pivot said blades toward each other so as; to engage the end portions there.- of beneath the roll, pick up the latter and shear through it with a substantially encompassing action, without substantially checking the contmued movement of said roll of dough 4. In a bun making machine, the combination with means to move an elongated roll of dough lengthwise along a defined path substantially in the direction of its axis, of a roll shearing device comprising a. pair of depending shear blades mounted substantially above. the defined path. each blade having the lower end portion thereof turned inwardly toward the other blade substantially at a right angle to the remaining: portion oil the. blade to engage beneath such roll, both ot said portions of each blade being provided with a cutting edge, and means to move at least one 0i said blades toward the other so as to engage the end portions thereof beneath the roll and shear through it with a substantially encompassing action.

5. In a bun making machine, the combination with means to move an. elongated roll of dough lengthwise along a deiined path substantially in the direction of its axis, a roll shearing device comprising a pairy of depending shear blades pivotally mounted above the defined path, each blade having the lower end portion thereof turned inwardly toward the other blade. to engage beneath such roll, and means to rotate said blades about their common axis in opposite directions with the end portions thereof leading so as to engage the latter beneath the roll, pick it up and shear through it with a substantially encompassing action.

6. In a bun making machine,l the combination comprising, elongated roll of, dough substantially about its axis and moving it: during rotation lengthwise generally along a delined path substantially in the direction of` its axis, and a roll shearing device comprising a pair of depending shear blades mounted substantially above the defined path of the rotated roll, each blade having the lower end portion thereof turned inwardly toward the other blade to engage beneath the rotated roll, and means to move at least one of said blades toward the other so as to engage the end portions thereof beneath the roll, pick up the latter and shear through it with substantially encompassing action while it is being rotated.

'7. In a bun making machine, the combination comprising, means for continuously rotating an elongated roll of dough substantially about its axis and moving it during rotation lengthwise generally along a defined path substantially in the direction of its axis, and a roll shearing device comprising a pair of depending shear blades mounted substantially above the path of the rotated roll, each blade having the lower end portion thereof turned inwardly toward the other blade to engage beneath the rotated roll, and means to move said blades toward each other so as to engage the end portions thereof beneath the rotated roll, pick up the latter and shear through it with a substantially encompassing action while it is being rotated.

at a. commony axis substantially means for continuously rotating an f 8.. In a bun making machine, the combination comprising, means for continuously rotating an elongated roll of dough substantially about its axis and moving it' during rotation lengthwise generally along a defined path substantially 'm the direction of its axis, and a roll shearing device comprising a pair of depending shear blades pivotally mounted at a common axis substantially above the path of the rotated roll, each blade having the lower end portion thereof turned inwardly toward the other blade to engage beneath the rotated roll, and means to pivot said blades. toward each other so as to engage the end portions thereof beneath the rotated roll, pick up the latter and shear through it with a substan-A tiallyencompassing action while it is being rctated.

9. In a bun making machine, the combination comprising, means for continuously rotating an elongated roll of dough substantially abouty its axis and moving it during rotationv lengthwise generally along a. defined path substantially in the direction of its axis, and a roll shearing device comprising a pair oi depending shear blades mounted substantially above the path of the rotatedv roll, each blade having the lower end portion thereof turned inwardly toward the other blade substantially at a right angle to the remaining portion of the blade to engage beneath the rotated roll, both of said portions of each blade being provided with a cutting edge, and means to move at least one of said blades toward the other so as to engage the end portions thereof beneath the rotated roll and shear through it with a substantially encompassing action while it is beingv rotated.

lll. In a bun making machine., the combination comprising, means for continuously rotating an elongated roll of dough substantially about its axis and moving it during rotation lengthwise generally along a defined path substantially in the direction of its axis, and a roll shearing 'device comprising a pair of dependingshear blades pivotally mounted at a common axis substantially above the path of the rotated roll, each blade having a substantially radially extending portion and a tapered end portion extending therefrom substantially at a right angle thereto toward the other blade to engage beneath the rotated roll, each blade being provided on both portions thereof with a continuous cutting edge, and means to pivot said blades toward each other so as to engage the end portions thereof beneath the rotated roll, pick up the latter and shear through it with a substantially encompassing action while it is being rotated.

1i. In a bun making machine, the combination comprising, means for continuously rotating an elongated roll of dough substantially about its axis` and moving it during rotation lengthwise generally along a dened path substantially in they direction of its axis., and a, roll shearing device comprising a pair of depending shear blades pivotally mounted at a common axis substantially above the path of the rotated roll, each blade having the lower end portion thereof turned inwardly toward the rotated roll, and means to rotate said blades about their common axis in opposite directions with the end portions thereof leading so as to engage the latter beneath the rotated roll, pick up the latterand shear through it with a substantially encompassing action while it is being rotated.

l2. In a bun making machine, the combination the other blade to engage beneath v 11 with means to move an .elongated Vroll of dough toward the other to she lengthwise along a dened path substantially in buns comprising driven the direction of its axis, of a roll shearing deone of said shear blades, vice comprising a shaft rotatably mounted subsaid blade to a leading an stantially above the defined path with the axis of driven means, and means the former located substantially parallel to the rarily to hold said blade latter, a sleeve rotatably mounted about said position While said driven the other mounted on said sleeve for rotary movetion, said blade engaging m thereof turned inwardly toward each other to completed position at an angular speed greater engage beneath such roll, and means to rotate than the angular speed of said driven means.

said shaft and said sleeve in opposite directions 16. In a bun making machine, the combination so as to move said blades toward each other with means to move an elongated roll of dough across the defined path. lengthwise along a defined path substantially in a 13. In a bun making machine, the combination the direction of its axis, said means comprising with means to move an elongated roll of dough a conveyor having a, dough-supporting surface lengthwise along a defined path substantially in structure, of a roll shearing device comprising a former located substantially parallel to the latter, blade having a lower end portion thereof turned a. sleeve rotatably mounted about said shaft, a inwardly toward the other blade to engage bepair of shear blades with one mounted on said neath the roll, and means to move at least one vof shaft for rotary movement thereby and the other said blades toward the other so as to engage the thereby, said blades when substantially dependlatter from said conveyor surface structure and ing from their common axis in shear-preparatory shear through the roll with a substantially enpositions having the lower end portions thereof compassng action.

to engage beneath such roll, and means to rotate lengthwise along a defined path substantially in 40 and adaptedfsubstantially to clear said belt, each `1`4. In a bun making machine the combination blade having a lower end portion thereof turned with means to move an elongated roll of dough inwardly toward the other blade :to engage belengthwise along a defined path substantially in neath the roll, and means to move at least one of the direction of its axis, of a roll shearing device said blades toward the other so as to engage the comprising a pair of depending shear blades end portions thereof beneath the rOlL Pick up mounted substantially above the defined path, .the latter from said belt and shear through the and means to move at least one of said blades roll with a substantially encompassing action.

toward the other to shear the roll into separate WILLIAM C. GRIMM. buns'comprising variable speed means to move RICHARD H. LINNEMAN. said blade from shear-completed position to shear-preparatory position at a selected rate ofV REFERENCES CITED Speed to determine length of buns and means to The following references are of record in the move said bladle from shear-preparatory position me of this patent; e to-shear-comp eted position at a relativel fast rate of speed.V y UNITED sTATEs PATENTS 15. In a bun making machine the combination Number Name Date with means to move an elongated roll of dough 2,337,539 Buechek Dec. 28, 1943 lengthwise along a defined path substantially in the vdirection of its axis, of a roll shearing device FOREIGN PATENTS comprising a pair of depending shear blades Number Country Date mounted substantially above the defined path, 208,153 British Mar. 5, 1923 and means to move at least one of said blades