US2207584A - Doughnut machine - Google Patents

Description

July 9,1940. s. A. GARDNER DOUGHNUT MACHINE Filed Nov. 25, 1959 4'Sheets-Sheet 1 Stephen A. Gardner y 9, 1940. s. A. GARDNER 2,207,584

DOUGHNUT MACHINE $ephen Q Gardner July 9, 1940. s. A. GARDNER DOUGHNUT MACHINE Filed Nov. 25, 1959 4 Sheets-Sheet s 2,07 8 9i i 918' 22 we u Mn M Wm M a? A. x 1 m #7 a mm m 8 Lu 3% w 1M mu m w u H %1 6 I va w P7 m w 8 1W6 NW July 9, 1940; s. A. GARDNER DOUGHNUT MACHINE Filed Nov. 25, 1939 4 Sheets-Sheet 4 Stephen A. Gardner fia Patented July 9, 1940 UNITED STATES PATENT OFFICE Application November 25, 1939, Serial No. 306,168

11 Claims.

My invention relates to doughnut machines and has for an object to provide a doughnut machine which will be extremely eflicientin operation.

' Another object of the invention resides inproviding a doughnut machine in which the doughnuts are progressed along a channel by means of the flow of the cooking liquid and in which the number of doughnuts passing through the machine is positively and accurately controlled to control the degree of cooking of the doughnuts.

Another object of the invention resides in providing a doughnut machine in which the capacity of the machine may be manually varied at will. 1

- A still further object of the invention resides in providing cams for operating the doughnut former and the control device of the doughnut machine and in providing a construction for varying-the capacity of the machine whereby a single cam of fixed form can be used for each of said devices.

An object of the invention resides in providing each of the cams for operating the doughnut 5 former and control device with a number of irregularities, each irregularity forming a dough nut and controlling the'passage of a doughnut along the channel and in providing means for preventing certain of the irregularities from cf- 30 fecting the operation of the doughnut former and control device.

Another object of the invention resides in providing spring controlled means for urging the cam followers operating in conjunction with the 35 said cams into engagement therewith and in providing means for periodically rendering said spring controlled means inoperable.

Another object of the invention resides in providing a shaft having engaging members thereon adapted to engage parts movable with the cam followers for preventing movement of the followers toward the cam surfaces-of the cams, and in providing another cam adapted to be manual- 1y moved to engage or disengage a cam follower 45 carried by said second shaft, whereby said engaging members are brought into operative or inoperative position at will.

Other objects of the invention reside in the novel combination and arrangement of parts and in the details of construction hereinafter illustrated and/or described.

In the drawings:

Fig. 1 is a plan view of a doughnut machine illustrating an embodiment of my invention.

Fig. 2 is a longitudinal elevational sectional view taken on line 2--2 of Fig. 1 and drawn to ya greater scale. L

Fig. 3 is a view similar to Fig. 2 showing the parts in altered position, v Fig. A: is a plan sectional 'view taken on line 5 4-4 of Fig. 2. N Fig. 5 is an inverted plan sectional view taken on line 55 of Fig. 2.

Fig. 6 is an elevational sectional view taken on line 6-6 of Fig. 4. a

This invention is an improvement of the doughnut machine invented by Alexander S. T. Lagaard, Serial Number 302,945 filed Nov. 6, 1939, and the construction of parts not shown in detail in this application may be had from the ap- 16 plication of said Alexander S. T. Lagaard. 3

In the drawings I have shown a doughnut machine A which consists of a case It constructed with end walls. II and I2 and side walls is and M connected therewith. The case includes up- 20 rights I5 at the corners of the same which extend throughout the height of the case and to which the various walls are attached. The walls. are preferably constructed of sheet metal and are directly secured to the uprights I5. The case I0 further includes upper and lower frames I! which are channel shaped in cross section and which I extend perimetrically about the case and hold the various uprights If: in position. The walls of the case are also attached to these frames.

Within the case I0 is disposed a cooking kettle 4 l8.which is preferably of cast metal and which is constructed with a bottom l9 and With vertical walls 2| extending upwardly therefrom. The vertical walls are connected at their upper ends with upper walls 22 and the various walls and bottom are so arranged as to form a channel 23 which extends throughout the major portion of the kettle and which provides a way along which the doughnuts may travel. The kettle I8 40 has'one corner of the same removed, as designated at .24, leaving a main portion. 25 of the width of the case l0 and of a length equal to about two-thirds of the length of the same. This construction provides an extension26 to the kettle which extends up to the end wall 12. The case I0 is constructed with a ledge 21 extending about the margin of the same. A guard 29 on the case l0 issues upwardly from the walls thereof and overlies the edge of the ledge 21. The kettle I8 is supported on the frame 11 in any suitable manner.

The channel 23 is arranged to provide a straight run 32 which starts in close proximity to wall l2 and follows along wall I3. Channel 23 at the end of run 32 makes a curve 33 which leads into another straight run 34 following along the wall ll. At the end of this run the channel has another curve 35 which leads into still another straight run 36 which follows along the wall I l. At the end of the run 35 the channel is constructed with a loop 37 which is connected to another straight run 38. The run 38 terminates in a curve 39 which, in turn, is connected to a short straight run 3! parallel with'the run 36 and closely positioned relative thereto. This run is connected to a curve &2 which, in turn, is connected to a straight run 43 parallel with the run 32 and disposed in close proximity thereto. The run e3 discharges into a reservoir 44 which is merely an enlargement of the said run. From this reservoir a short run 45 is provided which is connected by a curve 46 with the end of the run 32.

The major portion 25, of kettle I8, is enclosed by means of a hood 41, This hood utilizes the uprights l5 at the end wall H and two other uprights 48 which are attached to the case it at the locality of the end of the major portion 25 of the kettle formed by the corner 2 Between the various uprights are provided glass panels 59 which are slidably supported in guides 5| whereby the said panels may be removed. The hood 4! includes a top by means of which the major portion 25 of kettle I8 is enclosed and which has not been shown in the drawings.

In the reservoir id is provided a vertical tubular duct 52 which communicates at its lower end with the bottom of the reservoir 44. In this duct is disposed a propeller or elevator 53 which is mounted on the armature shaft of a motor 54. The duct 52 communicates atits upper end with the run 45 of the channel 23, thus discharging the cooking liquid from the reservoir 44 and into the run 45 of the channel, from which it flows throughout the course of the channel and is returned into the reservoir.

Situated atthe beginning of the run 32 of channel 23 is a doughnut former 55 which comprises a receptacle 56 for dough and a cutter 5i connected therewith. Such construction being well known in the art will not be described in detail in this application. The cutter 5'! includes a flanged sleeve 58 which severs dough extrusions from the mass contained in the receptacle 56. This sleeve is reciprocated in a vertical direction by means of a forked arm 59 which is mounted on a rock shaft 5|. Rock shaft M is journalled at one end in a bearing 62 and at its other end in a manner to be presently more fully described. The forked arm 59 swings freely on the shaft 6i but may be locked in relation thereto by means of clutch 60 constructed as follows: Rigidly se- ,=cured to the shaft M is an arm 53. This arm has a retractable pin 84 which may engage the forked arm 59 and cause the arm 63 and arm 59 to travel in unison. Air pressure is provided in the upper portion of the receptacle 56 which forces the dough downwardly through the cutter and as the sleeve 58 is reciprocated, annular dough extrusions are deposited in the cooking liquid in the beginning of the run 32 of channel 23.

In the run 35 of channel 23 is arranged a twisted tubular turner 65. This turner inverts the doughnuts after the same have been cooked a predetermined time sothat the doughnuts may be cooked equally on both sides. Such construction being well known in the art will not be described in detail in this application, It is to be noted, however, that the turner G5 inclines in the direction of flow of the cooking liquid so that the bottom is of the kettle 18 at the run ll is considerably lower than at the run 34 In the run 53 of channel 23 is disposed an ejector it for removing the cooked doughnuts from the cooking liquid. This ejector comprises a shaft til which is constantly driven in a manner to be presently described in detail. This shaft,

has mounted on it oppositely extending cranks 58 and 65. Sets of toothed blades ll and T2 are mounted on the said cranks and are adapted to be alternately raised and lowered and also moved in a longitudinal direction as the shaft 6'! rotates. The lower ends of these blades slide upon an inclined rest l3 which is mounted on the bot f tom ill of kettle E8 in theportion of the run 53 leading from the curve 42. It will readily be comprehended that, as the doughnuts reach the said blades the doughnuts are elevated and progressed upwardly and outwardlyof the kettle l8.

vThe ejector it is disposed within a trough M constructed with two side plates 35 and '16 and a bottom ll connected therewith. The said trough extends outwardly beyond the wall I? of the case it and directs the doughnuts out of the machine.

For controlling the rate of travel of the dough nuts along the channel 23, two control devicesl8 and i9 are employed. These control devices operate to allow the doughnuts, one at a time to enter the turner '55 and the ejector 56, whereby the degree of cooking of the doughnuts on both sides may be controlled. The control device 18 is situated in the run 34 of channel 23, while the control device 19 is situated in the run ii of channel 23.

Inasmuch as the control devices 18 and 19 ;do I

not form any feature of the instant application for patent the said devices have not been shown in detail in the drawings and the same will not be described, reference being had to the above noted application for patent of Alexander S. -T

Lagaard for the construction of the said device,

It will be noted, however, that the control device I3 is operated by a shaft H2 and that the con trol device i8 is operated from the control dewill be subsequently more fully described.

In order to procure sufficient cooking time for the doughnuts in advance of each of the said control. devices when the machine is first started, it becomes necessary to prevent travel of the doughnuts untilthe desired number of doughnuts are in the machine. In conjunction with the control device l3 an obstructing member 29! is employed which is adapted to be moved in the path of movement of the doughnuts and to obstruct travel of the same. This device is operated by a rod 299 slidable in the guide 30E attached to the ledge 2! of kettle it. A knob 352- on the rod 299 permits of operating the said obstructing member to move the same into obstructing or clearing position.

In conjunction with the control device 79 a similar obstructing member 3M is employed In operation each device is rapidly low- This is accomplished through a single I which is operated by rod 308 guided for move- 75 ment in a guide 309 attachedto ledge 21. "This rod is operable through a knob 3II attached to the same. 1

The cutter 55, the ejector 66. and the two control devices 18 and 19 are all operated by an op: erating mechanism I40 contained within a chamber' I61 formed within a case I44, disposed in the I, cut-away corner 24 of the kettle I8 This operating mechanism will now be described in detail.

The case I44 includes a lateral wall structure indicated in its entirety by the reference numeral I45 which is open at the top'and bottom. This wall structure includes two side walls I46 and I41 and two end walls I48 and I 49. These walls are covered at the top by a cover I5I which is secured to said walls by means of counter-sunk screws I52 threaded into bosses I53 formed on said walls. In a similar manner a closure I54 is provided for the lowermostportion of the case I44, which closure is attached to the wall structure I45 bymeans of screws I55 which are similarly threaded into bosses I56 formed on thewall structure I45. The case I44 is provided with pads I51 formed on the closure I54, which pads rest upon the upper frame I1 and are secured thereto by means of screws I58 which pass through the uppermost flanges of the frame members of frame I1 and are threaded into said pads.

The closure I54 of case I44 has attached to the underside thereof an electric motor I59 having a vertical shaft I6I Motor I 59 is constructed with an end bell I62 provided with a flange I63- adapted to engage a ring I64 cast on the under surface of the closure I54.

ring I64 and hold the motor I59 attached to the closure I54. Motor I59 may be of any desirable construction and the details thereof have not been shown in the drawings. The shaft I6I' of motor I 59 passes through a seal I66 and into the chamber I61 formed within the case I44.

Issuing from the wall I41 of case I 44 are two bearing supports I68 and I69. The bearing sup port I68 has attached to it a bearing I1I for the lower end of a vertically extending shaft I12. This shaft is journalled in its upper end in a ball bearing I13 which serves as an end thrust bearing for restraining longitudinal movement of the shaft I12. Shaft I12 has secured to the lower end thereof a spur gear I14 which meshes with a pinion I15 fast on the shaft I6I of motor I59. Shaft I12 also has formed on it a worm I16 which meshes with a worm wheel I11 keyed to a horizontally extending shaft I18. Shaft I18 extends completely across the case and is journalled in bearings I 8I and I82 carried by the end walls The ejector 66 is driven from the shaft I12 in the following manner: Shaft 61 of the said ejector extendsthrough a tubular housing I83 p'roits outer end with a bearing I86 which journals one end of the shaft 61.

The other end of this shaft extends into the chamber I61 of case I44 and is journalled in a bearing I 81 issuing outwardly from the wall I41 of case I44. The shaft 61 has mounted on it a spiral gear I88 which meshes with another spiral gear I89 fast on the shaft I12. These gears are so proportioned that the shaft 61 travels at a suitable speed to alternately raise the toothed blades H and 12 and procure ejection of the doughnuts.

Screws I65 extend-. ing through the flange I63 are threaded into the the kettle I3 toward the operating mechanism I48 contained within the case I44 and is connected by means of a coupling 2II with a shaft 2I2. Shaft 2I2, as best shown in Fig. 2, extends through the wall I46 of case I44 and into the chamber I61 of the said case at an elevation near the closure I54 thereof. Within the chamber I61. of the case I44 is formed an elongated boss 2I3 which is provided with bearings 214 and 229 journallin'g the shaft 2I2. This shaft has secured to the end of it a bevel gear 2I5f which meshes with another bevel gear 2I6 fast on a shaft 2" extending horizontally across the case The latter shaft is journalled in'bearings 2| 8 carried by the side walls I 48 and I 49 of the case I44 and shown in Fig. 5. i

Attached to the Wall I48 of. case I44, near the uppermost portion of th'e'same, as best shown in Fig. 6, is a stud 2I9. Mounted for oscillation on this stud is a lever 22I which has'a depending arm 222. Arm 222 is formed with a gear seg ment 223 which meshes with a pinion 224 rotatably mounted on the shaft 2I1. The lever 22I is further formed with an arm 225 which carries at the end of it a roller 226 adapted toengage thesurface 221 of a disc cam 228. Cam 228 is keyed to the shaft I 18 and is best shown in Fig. 6.

The lever MI is urged to move in a counterclockwise direction, as viewed in Fig. 6, to cause the roller 226 to bear against the cam 228 by means of the following construction: Issuing inwardly from the wall I41 of case I44 is a boss 23I which is bored at 232 to slidably receive a tubular spring housing 233. Tubular spring housing 233 has connected to the end of it a socketed head 234 which has secured to it a forked arm 235. Arm 235 is pivoted by means of a pintle 236 to the arm 222 of lever 22!. Within the interior of the housing 233 is mounted a compression coil spring 231 which is seated at one end against the head 234. A plug 245 is screwed into the boss 223 and engages the other end of the spring 231. It will be readily comprehended that the spring 231 urges the roller 226 to follow the surface 221 of cam 228. In the event that the spring 231 should break, plug 245 may be removed from the exterior of the device and the spring may be removed from the housing 233. A new spring may then be inserted and the plug 245 screwed into the boss 23L 1 The construction for procuring operation of the shaft 2I2 which operates the two control devices 18 and 19 of the invention is best shown in Fig. 5. The gear 224, which was previously referred to, has issuing outwardly from it a flange 241. This flange is constructed with a ratchet notch 248 in the face thereof. Adjacent to the flange 241, on shaft 2I1, is a head 249 which is keyed to the said shaft and which is constructed with a groove 25I in the same extending in a radial direction. In this groove is disposed a pawl 252 which is pivoted on a pin 253 extending through the head 249. The pawl 252 is adapted to engage the notch 248 in flange 241, and when the gear 224 is rotated in one direction, the head 249 and the shaft 2I1 are both rotated in the same direction. This causes rotation of shaft 2I2 and shaft II2 through the bevel gears 2I5 and 2I6 which operates the control devices coil spring 254 which is disposed in a bore 255 in the end of the shaft 2H. This spring is seated against a plug 256, threaded in the end of the said shaft and engages a sliding plunger 25'! in the bore 255 which bears against a finger 253 formed on the pawl 252, which finger extends through a slot 25% in the shaft 2I'I and into the bore 255. In this manner the pawl is held in engagement with the ratchet notch 248. By unloosening the plug 255, which is accessible through a removable cap 26L on the exterior of the wall its of case M l, spring 254 may be replaced when the occasion requires it.

The two control devices I8 and 18 operate only in one direction. To prevent reverse movement of these devices the head 249 is held from rotation when the gear 2% travels in the reverse direction. This is accomplished as follows: Formed on the interior of the wall I l-6 of case HM is a threaded boss 262. This boss has screwed into it a tubular guide 263 formed with a bore 264. A plunger 265 is slidable in another bore 266 forming a continuation of the bore 264 and of reduced diameter. This plunger is constructed with a head 26'! disposed within the bore 264. A compression coil spring 268 in the bore 26% engages the head it? and urges the plunger 265 outwardly. The spring 268 reacts against a plug 259 screwed in the end of the tubular guide 263. The plunger 2E5 serves as a dog and is adapted to engage in a ratchet notch 211 formed in the outer periphery of the head 2%. The two notches 2H and 2&8 are so arranged that rotation of the gear 224 in opposite directions causes rotation of the shaft M2 in one direction only.

For rocking the shaft BI which operates the cutter 55, the following construction is used. Shaft 6| is connected by means of a coupling IlI with another shaft I 92 extending across the walls M8 and MB of case IM. This latter shaft is journalled in bearings I83 and I94 carried by the walls M3 and I49 of the case. The shaft I92 has keyed to it a bell crank IS5-(Fig. 3) which has an upwardly extending arm 596 and a. substantially horizontally extending arm I91. The arm it? of bell crank I95 has rotatably mounted at the end thereof a roller I98 which is adapted to engage the periphery I99 of a disc cam Elli. Cam 2c: is constructed with a hub 202, Fig. 4. which is keyed to the shaft I18. The surface 5% of cam 28% is formed with two indentations 2M and 295 diametrally opposed which, when the roller I93 drops into the same, permit the bell crank I95 to oscillate, whereby the cutter sleeve 58 is raised and lowered to procure the deposit of dough formations into the cooking liquid in the kettle 28. The roller I98 is urged into engagement with the surface I99 of cam 20! by means of a spring similar to that described in connection with the mechanism for operating the control devices. This spring is contained within a tubular housing 206 slidable in a boss 20? is-- suing from the wall I l! of case IM. The said spring acts against a head 268 which is pivoted to the end of the arm I96 of bell crank E95 by means of a pin 2Iil and urges the same to cause a clockwise movement of shaft I92, as viewed in Fig. 3. I

It will be noted that the cam 20I, which operates the cutter 55, has two depressions 2M and 285 in it, whereby two doughnuts are cut for each revolution of the shaft I18. Likewise, the cam 228 which operates the control devices I8 and 19 has two depressions 212 and 213 in it by means of which. the control devices are operated twice for each revolution of the shaft I18.

By means of the construction now to be described, and which constitutes the instant invention, operation of the cutter and control devices may be procured through one only of the depressions of the two cams referred to. Extending across the walls M8 and lid of the housing IMI is a shaft iii. bearings 532 and 93 carried by the walls I48 and I49 of the case 3%. The shaft/9i has secured to it two arms 9 and 95, best shown in Fig. 4, which extend beneath the two spring housings 233 and 206. 96 welded or brazed thereto which is constucted with'a face 97 facing in the direction of the two cams 228 and MI. The arms 8d and as are con- Each of these spring housings has a lug This shaft .is journalled .in two liO structed with hooks d8 which, when the shaft is rocked, are adapted to engage the surfaces 91 of s the lugs 96 and to restrain movement of, the springs within the same. This holds the two cam followers 228 and W8 from engagement with the respective cams 229 and 2t! and prevents the said 1 cam followers from following the depressions-in said cams while the spring housings are so engaged.

The shaft 9i is urged into the position shown 7 in Fig. 6 by means of a spring 99, similar to the spring 23i, which spring is contained in a spring housing lsil attached to thewall M] of case Hi l, which is best shown in Fig. 3. This spring engages a plunger I32 slidable in the housing NH and is pivoted to an arm 5% keyed on shaft 9t.

Arm N33 has a stop Hit on the same which en,- I

gages wall iii and limits the movement 'of shaft.

iii to its position in which the arms 9t and 95 are situated, as shown in Fig. 2.

The shaft Bl is rocked in its bearings in the following manner: Attached to the said shaft is an arm it which is provided with a cam follower in the form of a roller 6% at the end thereof. This roller is adapted to engage a cam Iiil slidably mounted on the shaft W8. Cam Illl has a pin ZSI secured to it which 282 in the cam 205, (Fig. i). By means of this passes through a hole construction the cam Iill is keyed relative to the l shaft I18 and may move axially with respect thereto. The cam liil is shiftedlongitudinally by means of the following construction: Extending downwardly from the cover IEI is a boss 285 which is drilled to form a bearing for a shaft best shown in Fig. 3. Shaft 285 extends out,-

wardly beyond the cover and has secured to it a sition free therefrom. The cam Iill' has a'depression Iliii in it which, when the roller I35 is opposite, said depression withdraws the two hooks-93 from engagement with the lugs $6. This allows the cutter and the two control devices l8 and is to operate once for each revolution of the shaft H8. When the roller H16 engages the raised portion of the cam I537, which is indicated at I09,

the cutter and control devices are restrained from movement. r g The operation of the invention is as follows} The channel 23 in kettle i8 is first filled with z,

cooking liquid. This liquid is maintained at a suitable temperature 'for'oooking by means .of a heater disposed beneath said kettle and which has not been shown in the drawings. The motor 54 is then started which causes operation of the propeller 53. Circulation of the cookingliquid in the channel 23 now commences. The motor i59 is now energized and the shaft N8 of the transmission mechanism set in operation. This procures operation of the ejector $6 and thetwo control devices 13 and 19. In addition, the shaft 6! is periodically oscillated. The clutch 60 is, however, maintained open so that the cutter 55 is normally inoperative. The container 56 is filled with dough and air pressure applied to the same.

As soon as the clutch 60 is closed the cutter 55 operates and dough extrusions are deposited in the flowing cooking liquid within the channel 23.

The obstructing members $04 and29l are moved into obstructing positions by means of the knobs 3H and 3532. As the doughnuts travel along the runs 32 and 33 of the channel 23 member 29l arrests the movement thereof and thesaid member is maintained in obstructing position until" the required number of doughnuts have accumulated in advance of the same- Thereafter the said obstructing member 29l is elevated and the doughnuts now travel through the control device 78 and are released, one at a time, to the turner 65. The doughnuts passing through the said turner are now arrested by means of the obstructing member 304 andthe same stackup in ad-,

' brings the cam it! into engagement with the roller iii.

The hooks 98 are now periodically brought into engagement with the lugs 96 and one operation of the cutter and control device per revolution of the shaft H8 are procured instead of two as is the case when the cam ill! is out of engagement with roller I06. In this manner either the maximum number or one-half as many doughnuts may be cooked in a unitof time. a i

The advantages of my invention are manifest. My improved doughnut machine is extremely positive in action. The operating mechanism of my invention is extremelysimple and eliminates the use of auxiliary cams in conjunction with the main cam. r

Changes in the specific form of my invention, as herein disclosed, may be made within the scope of what is claimed without departing from the,

spirit of my invention.

Having described my invention, what I claim as new and desire to protect by Letters Patent is:

1. In a doughnut machine in which the doughnuts are progressedalong a way, a doughnut former for depositing dough formations in the cooking liquid in the way, a drive shaft, a cam on the drive shaft, said cam having a plurality of irregularities, means controlled by said cam for operating said doughnut former and including a follower adapted to engage said. cam, said follower causing an operation of the doughnut former when passing each irregularity, and means irregularities for periodically engaging a part movable with. said follower to restrain engagement of the follower with certain. of said irregularities.

2. In a doughnutmachine inwhich the doughnuts are progressed along a way, a doughnut former for depositing dough formations in the cooking liquid in the way, a drive shaft, a cam on the drive shaft, said cam having a plurality of irregularities, means controlled by said cam for operating saiddoughnut former and including a follower adapted to engage said cam, said follower causing an operation of the doughnut former when passing each irregularity, resilient means for urging said followe'r'into engagement with said cam, and means for periodically engaging a part movable with said follower. to restrain engagement of the follower with certain of the and against'the action of said resilient means.

3. In a doughnut machine in which the doughnuts are progressed along a way, a doughnut former for depositing dough formations in the cooking liquid in the way, a drive shaft, a cam on the drive shaft, said cam having a plurality of depressions, means controlled by said cam for operating said doughnut former and including a follower adapted to engage said cam, said follower causing an operation of the doughnut,

former when entering into each of said depressions, resilient means for. urging said follower intov engagement with the cam, and means for periodically engaging a part movable with said follower to restrain entry of the follower into certain of the depressions and'against the action of said resilient means.

4. In a doughnut machine in which the doughnuts are progressed along a way, a doughnut formerfor depositing dough formations in the cooking liquid in the way, a drive shaft, a cam on the drive shaft, said cam having a plurality of irregularities, means controlled by said cam for operating said doughnut former and including a follower adapted to engage said cam, said follower causing an operation of the doughnut former when passing each irregularity,and latching means forengaging a partmovable with said follower to prevent movement thereof while thefollower is in the position to engage one of said irregularities." I

5. In a doughnut machine in which the dough nuts are progressed along a way, a doughnut former for depositing dough formations in the cooking liquid in the way, a drive-shaft, a cam .on the drive shaft, said cam having a plurality of irregularities, means controlled by said cam follower causing" an operation of the doughnut I former when passing each irregularity, means engaging a part movable with said follower to restrain movement of the follower and engagement of the follower with the surface of said cam, andv means operated by said shaft for periodically rendering said last named means operable to restrain movement of the follower when the follower is in position to engage certain of said irregularities.

6. In a doughnut machine in which the doughnuts are progressed along a way, a doughnut former for depositing dough formations in the cooking liquid in the Way, a drive shaft, a cam on the drive shaft, said cam having a plurality of irregularities, means controlled by said cam for operating said doughnut former. and including a follower adapted to engage said cam, said '7. In a doughnut machine in which the doughnuts are progressed along a way, a doughnut former for depositing dough formations in the cooking liquid in the way, a drive shaft, a cam on the drive shaft, said cam having a plurality of irregularities, means controlled by said cam for operating said doughnut former and including a follower adapted to engage said cam, said follower causing an operation of the doughnut former when passing each irregularity, a second shaft, an arm on said second shaft, an engaging member on said arm and adapted to engage a part movable with said follower to restrain engagement of the follower with the surface of said carn, a second cam on said first named shaft, and means operated by said second cam for periodically swinging said second named shaft to' move said arm in a manner to cause the engaging member thereon to restrain movement of the follower when the follower is in a position to engage certain of the irregularities on said first named cam.

8. In a doughnut machine in which the doughnuts are progressed along a way, a doughnut former for depositing dough formations in the cooking liquid in the way, a drive shaft, a cam on the drive shaft, said'cam having a plurality of depressions, a pivoted arm, a cam follower on said arm adapted to engage the cam and enter into said depressions, said follower causing an operation of the doughnut former when entering into each of said depressions, resilient means for swinging said arm to urge the follower into engagement with said cam, a second shaft, an arm on said second shaft, an engaging member on said second arm for engaging a part movable with said first named arm to hold said follower from engaging said cam when the follower is in a position to enter one of said depressions, a second cam on said first named shaft, an arm connected to said second named shaft and having a follower adapted to engage said second named cam, said second named cam having irregularities thereon for moving said arm when the first named follower is in position to enter into certain of the depressions in said first named cam.

9. In a doughnut machine in which the doughnuts are progressed along a way, a doughnut former for depositing dough formations in the cooking liquid in the way, a drive shaft, a cam on the drive shaft, said cam having a plurality of depressions, means controlled by said cam for operating said doughnut former and including a pivoted arm, a followeron said arm adapted to engage said cam and to enter into said depressions, said follower causing an operation of the doughnut former when entering into each of said depressions, a spring, a spring housing enspring housing, a second shaft, an arm carried by said second shaft, a hook on said arm adapted to engage said lug and prevent said spring from moving the spring follower into engagement with the earn, a second cam on said first named shaft, and means operated by said second cam for periodically swinging said second named shaft to cause the hook to engage the lug when the cam follower is in position to enter one of the depressions in said first named cam.

10. In a doughnut machine in which'the doughnuts are progressed along a way, a doughnut former for depositing dough formations in the cooking liquid in the way, a drive shaft, a cam on the drive shaft, said cam having a plurality of depressions, means controlled by said cam for operating said doughnut former and including a pivoted arm, a follower on said arm adapted to engage said cam and to enter into said depressions, said follower causing an operation of the 1 doughnut former when entering into each of said depressions, a spring,-a spring housing enclosing said spring and pivoted to a part movable with arm on said second shaft, a cam follower on said I second arm adapted to engage the second cam,

said second cam'being adapted to move said second shaft to cause the hook to engage the lug when the first named follower is in a position to enter one of the depressions in said first named cam.

11. In a doughnut machine in which the doughnuts are progressed along away through the flow of the cooking liquid, adoughnut former for depositing dough formations in the cooking liquid; control means for controlling the number of doughnuts passing along said way, a drive;

shaft, a cam on said drive shaft, said cam having a plurality of irregularities, means controlled by said cam for operating said control device and including a follower adapted to engage saidcam, and means for periodically engaging a part movable with said follower to restrain engagement of the follower with certain of said irregularities.

STEPHEN .A. GARDNER.

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