Патент USA US2405903код для вставки
Aug. 13, i946; ’ P. s. PREMAS i. Ésmâßw DOUGHNUT- FORMING MACHINE Filed March 17, 1944 JN VEN TOR. Patented Aug. 13, 1946 ¿405.903 UNI TED 'STAT-IES PATE »N T 50 FFI CLE ` 2,405,903 f DOUGHNUT-«FORMING NIAGHINE l Peter S..'Premas, Chicagoflll. _Application March 17, 1944,. Serial'No.‘526,9`37 .6 Claims. (01.107452) 2 l‘vl'y invention relates to kitchen or restaurant utensils employed for the shaping or `cutting of dough or batter to form doughnuts and the like, and one object of >the invention is to providea machine for this pur-pose which is compact and light enough to be held in one hand and operated with the other, A further object of the invention is to provide Fig. 5 is a fragmental elevation or a modifican tion,_ partly in section. `Referring speciñcally to the drawing, the ma chine is mainlyin the vform of aV receptacleor hopper I0 for the vdough or batter I I from which the doughnuts are formed. The receptacle is preferably of .the cylindrical Vform shown, .al though it may be square or `polygcnalin shape withoutìprejudice toits use or operation. 'The receptacle. is ¿reduced conically at the bottom, as indicated at I2,_to terminate _with a throat I3 of a machine of the above character which has a relatively large capacity for a'hand utensil, >ena bling-.asingle filling of dough to produce as many as six dozen doughnuts. Another object of the invention is to design the relatively shallow ,cylindrical form. . The throat I3 4receives a bottom closure` on the novel machine with means to remove and form -a inside in .the form of.a disolllwhichmakes .a sliding fit withthe wall of the ~throat and is re inforced vin the center by upper and lower. plates I5. .'I'he ,assembly'ofthe disc .and plates is made ñxed amount of the doug-h or batter each time the machine is operated,> so that .the size of the doughnuts and the amount of dough required for given .number of batch of them maybe ldeiî nitely or accurately determined. A still further object ofthe invention is to con ñne the forming means to the center of the re fast by riveting-fas indicated at .I6-,to the .lower end of. a vertical rod 'I‘I located in the center of The rod is supported by .a 20 the receptacle I6. cross bar I8 spanning the top ofthe receptacle to normally 'maintainthe disc I4 just inside the bot ceptacle in which the dough is deposited, so .that the lsurrounding portions -of the 'dough may-.be tom of the throat .i3 .and lend the latter the form of a. c_up which contains an amount of dough suf An additional object of the invention »is to in v25 íicient toform Íone doughnut, whatever 'its pre clude a mechanism in the machine which'actsion scribed size may be. the principle of a plunger, with a special control The cross bar I`8§is.supported _endwise .on cor to form and dispense a 'doughnut everytime the free to move or settle as each'doughnut is formed. plunger is given a’downstroke. An important object of the invention is to »de- " sign the machine `for the easydetachment and removal of its mechanism,v facilitating the thor ough cleaning thereof as well asthe doughre ceptacle to maintain the machine .in a highly sanitary condition. Another object of the invention is toconstruct the machine with a minimum number of neces sary and sturdy parts, whereby to render the manufacture of the machine economical and ren der it durable over along period of use. with the above objects in View and-any others which may suggest themselves from the descrip tion to follow, a better understanding 'of the in vention may be had -by reference to the accom panying drawing, in which Fig. 1 is a vertical section of thev machine in a position preparatory to the formation of a dough nut; ner angle .brackets vIS secured at opposite. ,points inside. the rim 26 ofrthe receptacle; and the .bar is extended downwardly with .a. conical enlarge mentr 2| at the center to Uform a slide bearing for the. center rod I -I. The latter carries a fixed .col lar' 22 as a stop relative tothe bearing, 2l inre sponse to the` tension of a coil spring .23 carried ' by the part .of the rod which >projects above the cross'bar I8, the spring bearing against. the .bot~ tom of ,an inverted. cap or cup 24 secured to 'the upper end ofthe lrod bya cross pin >25. It is now apparent thatthe center rodis. in its vtopmost 40 position, but that the rod maybe lowered byde pressing the cup 211. Means .are provided. accessory. to. thecenter rod IlA toact~ on the dough .in la .direction toV form >the 45 doughnut. The main Yelement .ofsuch means isa circular, plunger 26..slidably .centered on. .therod I'I and of a diameter to be slidable in the .throat I3 Whendepressed from thefull-line position of Fie'. .l V.to that of.Fig..2. Theplunger is counter Fig. 2 is a repetition of the central portionof _in the bottom, asl indicated at.V 27! to. _denne Fig. 1, indicating .an intermediate position of 50 `sunk an internallyfbeveled .annular edge >28. working parts by means'oi dotted lines and the .The Yplunger Y2li ,is .supported .at the. lower >ends final positionv thereof by >means of full lines; of a» pair ,of Vvertical rods î29 .located on opposite Fig. 3 .is a top'plan view ,of Fig. 1,- on a reduced sides .of _the >center` rod I1, .such lower ends l.being scale; ' _ screwed .intothe-top of theplunger .as indicated Fig. 4 isa sectionion'the. line 4-45of. Fig.f1;. and 55 .at 30. `Thevrods29` also rise .slidably throughthe 2,405,903 3 cross bar I8 to the limit formed by ñxed collars 3| according to the positions of the rods in Fig. 1. At a suitable height above the cross bar the rods 29 are reduced with flat inner sides as indicated at 32 and further reduced to form terminal screws 33. A tie plate 34 is _perforated for the snug pas sage of the screws 33, these receiving securing nuts and washers 35, whereby to firmly secure the rods to the tie plate. The latter is in turn secured 10 by a center screw 36 to the hub 31 of a cap or hood 38 of a size suñicient to amply cover the assembly of the rods 29. ' The reduced portions 32 of the rods 29 receive a slidable cross-plate 39, and carry compression. springs 40 between the same and the tie plate 34 with the primary effect of keeping the cross-plate seated against the shoulders at the bottoms of the said reduced portions. Normally` the assembly of the rods 29 may occupy the topmost position indicated in Fig. l or a lower position within the mass of dough Il without causing any change in the same. However, when a doughnut is to be 4 brackets IS by a pair of split sleeves 42 which re lease the brackets when slid inwardly to a suñi cient extent. The cross bar and parts associated with it may then be raised out of the receptacle, incidentally leaving the interior thereof clear and fully accessible for cleaning. The cross bar I8 carries integral strips 43 underneath. These are of a thickness to tension the bottom ilanges of the sleeves as they are backed od the angle brackets, so that the sleeves hold snugly to the cross bar while it is being handled. It will be evident from the above description l that I have provided a light and handy appliance for the purpose stated. While it is suggestive 15 of a utensil, it contains a mechanism which gives it the character of a machine, since the dough feeding and forming actions are positive and precise. The principle of the feed isolates a pre scribed amount of the dough for each forming operation, which factor makes it easy to deter mine the quantity oi the ñlling for a desired number of the resulting product. The appliance need be not'much larger than the common iiour formed the action of the machine is instituted bv sifter for use in the home or in lunch rooms. downward pressure on the cap 38 with one hand However, where a greater capacity is desired, while a handle M projecting from the side of the 25 such as inbusy restaurants or plant lunch rooms, the receptacle may be suspended or otherwise independently supported. ln such event it is to hold the disc I4 as a bottom for the receptaclel preferable to extend the plunger tie plate 34 with throat I3 despite the pressure induced by the a side lever d4, as in Fig. 5, and substitute a hook descent of the plunger 25, since part of this pres 30 45 for the handle III, the illustration suggesting sure is transmitted or dissipated sidewise in the that the lever has been pulled down close to the dough mass. However, when the plunger reaches hook. Further, the forming unit of the plunger mechanism positively and uniformly dispenses the entrance of the throat, as indicated by dotted the dough charge to the full annular doughnut lines in Fig’. 2, the knife-like rim 28 of the plunger cuts the dough in the throat off from the sur~ 35 formation, cutting the same oiî cleanly. Finally, rounding mass, confining such dough to the the novel appliance is an article of few parts, is easy to operate, and is quickly separable for chamber formed by the plunger 26. the disc I ¿l and the wall of the throat. Now, the continued cleaning access and facility. ‘ While I have described the invention along _down pressure of the plunger is transmitted to the disc, which is thus forced to gradually drop speciñc lines, various minor changes or refine out of the throat, allowing a ring of dough to es ments may be made therein without departing cape from the latter marginally. AS the plunger from its principle, and I desire to consider such is further depressed'tomeet the disc, as seen in changes and reñnements as coming within the Fig. 2, the entire charge of dough is forced from scope and spirit of the appended claims. the said chamber, swelling the surrounding dough I claim: ring to the desired size of the doughnut indicated l. A `doughnut forming machine comprising a by dotted lines in the same ligure. receptacle for the doughnut dough and having While the downstroke imposed on the plunger a bottom discharge throat, a closure disc in the 2B is free until the cross-plate 39 reaches the cup 50 lower end of the throat, a plunger in the re 24 at the top of the center rod I1, such cross ceptacle designed to be slidable in the throat and plate'recedes upwardly along the plunger rods 23 normally adapted to engage the dough in the as the cap or hood 38 is pressed down further, receptacle at a point spaced above the throat, compressing> the springs 4B. As the plunger ap means to depress the plunger into the latter to preaches bottom, the cross-plate 39 bears on the 55 the extent of coníining the dough in said throat, cup 24 to compress Vthe spring 23 within the same, other means actuated by the action of the plunger so that ultimately all the springs are closely com tolower said disc from the throat before the pressed and the cup 24 is about to meet the cross plunger enters the same to cause the conñned bar I8 and stop the further movement of the doughy to issue about said lower end in a surN mechanism, so that the same appears as in Fig. 2. 60 rounding mass, said plunger being further de~ The knife edge 28 of the plunger also acts with pressible to lower said disc further and meet the respect to the disc I4, securing a clean-cut inner same, the outer bottom edge of the plunger con edge for the formed doughnut. The flexibility oí tacting the edge of the disc, and said bottom the disc makes it adaptable to possible slight de edge being beveled to substantial sharpness to viations in the level or alinernent of the plunger, cut said mass cleanly from the disc. whereby to secure full marginal contact with the 2. A doughnut forming machine comprising a receptacle is held with the other hand. Primarily, the spring 23 is of suilicient strength knifeedge 28 thereof. receptacle for the doughnut dough and having While the mechanism described above is> of a bottom discharge throat, a closure disc inthe open construction, it is conceivable that after its . lower end of the throat, a plunger in the recep use bits of dough or deposits of ñour may cling tacle designed to be slidable in the throat and to or tend to clog some of the parts. The mech 70 normally in spaced position above the same, anism is therefore made to be removable as a means to depress the plunger into the throat, unit from the receptacle, so that it may be placed other means actuated by the action of the plunger under a hot water faucet or otherwise thoroughly to lower said disc from the throat, said depress~ cleaned. The mechanism is only carried by the - ~ ing means comprising a support in the mouth'oí cross bar I8; and the latter is held to the angle 75 2,405,903 the receptacle, bearings carried by the support, 6 rod in a downward path of said plunger depress a pair of laterally-spaced rods rising from the ing means, and a spring between the abutment plunger through the bearings, a headpiece join and said support to resist the lowering of the ing the upper ends of the rods, a cross-plate disc. slidable on the rods and seating on stops formed 5 4. A doughnut forming machine comprising a in the same, compression springs coiled on the receptacle for the doughnut dough having a rods between the headpiece and the cross-plate, bottom discharge throat, a closure disc in the and an abutment on the support in the descend lower end of the throat, a rod secured to said ing path of the cross-plate when the headpiece is and extending axially of the receptacle, depressed to a partial extent, the springs yield 10 adisc support carried by said receptacle adjacent to ing to the further depression of the headpiece. the upper end thereof, a cap having a spring, 3. A doughnut forming machine comprising a said cap secured to said rod and said spring rest receptacle for the doughnut dough and having ing on said support resiliently mounting the up~ a bottom discharge throat, a closure disc in the lower end of the throat, a plunger in the recep 15 per end of said rod, a plunger slidable in the throat and having an actuating head, said head tacle designed to be siidable in the throat and being normally out of contact with and spaced normally in spaced position above the same, above said cap. means to depress the plunger into the throat, 5. The structure of claim 4, the bottom of said other means actuated by the action of the plunger plunger being countersunk and having an in to lower said disc from the throat, said other 20 ternally bevelled edge. means comprising a rod rising from the disc, a 6. The structure of claim 4, the actuating head support in the mouth of the receptacle and hav of said plunger comprising a spring-pressed cross ing a bearing for the upward passage of the rod, bar engageable with said spring cap. an abutment carried by the upper end of the PETER S. PREMAS.