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n'Aug- 9, 1938-` .1. FOLK SLICING., MACHINE Filed sept. '17, 1952 /05 Édl » ` 2,126,380 7 Sheets-sheet 1 Aug. 9, 1938. ' J, FOLK ` l _2,126,380 sLIoINGf.~ MACHINE Filed Sept. 17, 1932 7 Sheets-Sheet 2 Aug. 9, 1938. v ` `.1. FOLK _ _ sLIcING; MACHINE Filed Sept. 1'7, 1952 W /// f ' 2,126,380 ' ` 7 Sheets-Sheet 5 l Aug. 9,1938. ` ì ' J. FOLK l l - 2,126,380 SLIGINGL MACHINE ' Filed sept. 17, 1932 '/.shèets-sneet 4 f; if .2% Í/ ` _ ` Í? l z5’ s . \ \ 22 I ’ì //7 /f/ ' Ä /Zß l ' 37j / ` ' „. ` l «QM W -eßfçwá ¿7a/ff @Z 4 m I Aug. 9, 1938. J. FOLK 2,126,380 Filed Sept. 17, 1932 7 Sheets-Sheet 5 v , %/ A» . »` x ` 7%r ` 1 v , 1 , « A @a í @few/f ß?? N Aug. 9, 1938.. J. FOLK 2,126,380 SLICING~ MACHINE Filed sept. 17, 1952 '7 Sheets-Sheet 6 ii Aug. 9, 1938'. 1 J. FOLK 2,126,380 SLICING, MACHINE Filed Sept. 1’7, 1932` '7 Sheets-Sheet 7 Patented Aug. 9, 1938 2,126,380 UNITED STATES PATENT oFElcE i 2,126,380 SLICING MACHINE Joseph Folk, La Porte, Ind., assignor to- U. S. Slicing Machine Company, La Porte, Ind., a corporation of Indiana Application September 17, 1932, Serial N0. 633,594 15 Claims. The present invention relates to slicing ma chines, and particularly to that type of slicing machine in which the substance is mounted on a carriage which is moved manually relative to 5 a slicing knife so that successive slices may be cut therefrom. One object of this invention is to provide a slicing machine in which the substance carriage is provided with a clamp for engaging either the upper or rear surface of the substance to be sliced so that the substance may be moved toward the cutting plane of the knife, preferably by spring pressure. The clamp is preferably a self-locking clamp, that is, it locks itself in adjusted position as soon as the same is moved to that position. Another object of this invention relates to the manner of holding the substance as it is moved against the slicing knife, the substance being held in such a manner that the same is prevented 20 from sliding movement in a direction away from the knife and is also prevented from upward movement away from the supporting surface of the substance table. In carrying out this in vention, I provide a pusher plate having suitable 25 prongs thereon which have flat sides facing in a direction of relative movement between the knife and substance support and inclined in such a direction that the reaction between the sub stance .and the prongs will force the substance. 30 against the substance support. Another object of this invention resides in the provision of suitable guiding ribs on the sub stance support which are inclined slightly down ward toward the cutting plane of the knife to sup 35 port the substance in a substantially horizontal position when the rear end of the substance (that end which is away from the cutting plane of the knife) is clamped against the substance support ing table. In one preferred embodiment of my 40 invention, I use relatively sharp ribs adjacent to the cutting plane of the knife, the same having one side thereof substantially perpendicular to the plane of the substance support, the perpen dicular side of the ribs facing in the general di rection toward the cutting edge of the knife. Another object of this invention resides in the provision of a slicing machine having a sharpen ing apparatus positioned partially on the side of the cutting plane of the knife which is adjacent Ci O the substance support,` and in so mounting the clamp for the substance on the substance sup port that the clamp can move substantially into the cutting plane of the knife when in operative position, but which will automatically be moved away from the cutting plane when the clamp is moved to an inoperative position. The purpose of this arrangement is to prevent the clamp, when in an inoperative position or in operative posi tion, from striking the sharpening apparatus, while at the same time permitting the sharpen- 5 ing apparatus to be arranged in such a position that it can be quickly moved against the cutting edge of the knife to sharpen the same. A still further object of this invention resides in the provision of a clamp which may be readily 10 detached from the substance supporting carriage, this clamp preferably having a rigid portion to be detachably secured to the substance support and a spring~pressed substance engaging portion mounted on the rigid portion. Other objects of this invention will appear hereinafter .as the description thereof proceeds, the novel features, arrangements and combina tions being clearly set forth in the appended claims. ' ' In the drawings: Fig. 1 is a side elevational view of a slicing ma chine embodying my invention; Fig. 2 is a plan view of the slicing machine shown in Fig. 1; 25 Fig. 3 is an end elevational view of the same looking at the slicing machine from the side away from the operator, or from the right as viewed in Fig. 1; Fig. Il is an elevational view of the arrange- 30 ment of the gauge plate, guard plate and slicing knife; Fig. 5 is a section taken> substantially along the line 5-5 of Fig. 4; Fig. 6 is a section taken substantially along 35 the line 6--6 of Fig. 2; 1 Fig. 7 is a section taken along the line 1_1 of Fig. 6; Fig. 8 is a section taken along the line 8-`ß of Fig. '7;Í 40 Fig. 9 is a view similar to Fig. 8, showing a modified form of rib; Fig. 10 is a section taken substantially yalong the line lll-_ID of Fig. 2; Fig. 11 is a bottom plan view of the substance 45 supporting carriage with parts thereof broken away for the sake of clearness; Fig. 12 is a section taken substantially along the line l2-l2 of Fig. 3; Fig. 13 is a section taken substantially along 50 the line |3-I3 of Fig. 12; Fig. 14 is a plan view of a modified form of pusher plate for the substance carriage; Fig. l5 is a section taken along the line l5-I5 of Fig. 14; 2 2,126,380 Fig. 16 is an end elevational view of the sub stance carriage and clamp shown in Fig. 14, look ing from the right in that figure; Fig. 17 is a section taken along the line |1-|1 of Fig. 14; and Fig. 18 is a section taken on the line |8-l8 of Fig. 1. The reference numeral 20 indicates the base of a slicing machine in which there is housed a motor or the like for driving a slicing knife. At one side of the base at 2| (see Figs. 2 and 3) there is pro vided a knife supporting bracket upon which the knife 22 is rotatably mounted. This mounting for the knife is best illustrated in Fig. 5 in which 23 represents the knife supporting shaft, 24 a pulley driven by the belt 25 from the motor, and in which 26 indicates a clamping nut in the form of a headed screw provided with openings 21 for the reception of a suitable tool for threading the 20 screw into the shaft 23. The knife itself is lcentered upon a hub portion 28 formed on the pulley A24 and is clamped between the nut 26 and the body of the pulley 24. A slice deflector 29 extends from a position close to the cutting edge 25 of the knife to a position remote therefrom and acts as means for directing the slice away from the knife after the slice has been formed. The construction of this deilector 29 is not material to the present invention but is claimed in another 30 application assigned to the same party in interest. As is clear from an inspection of Figs. 3 and 4, the base is provided with a scrap receiving surface 30, this surface being inclined downwardly and to the left, as viewed in Fig. 4, and being formed directly below the knife so that any scraps falling vfrom the knife will fall upon the surface 30 and roll down the surface 30 toward the left, as viewed in Fig. 4, onto the slice receiving surface of the tray 3| where they may be easily removed. Fur 40 ther-more, in the event the scraps do not roll down the surface 30, it is possible to quickly clean this surface 30 by moving a cleaning cloth or the like over the surface from one end thereof to the other, the cleaning operation being aided by the sloping surface of the scrap receiving surface 30. The knife is provided with a curved guard 32 which encloses the upper and rear portions of the knife. The guard plate 33 has the lugs 34 thereof secured by pins 35 or the like to the guard 32, whereby the guard 32 and guard plate 33 move in unison with each other. The guard 32 is provided with a notch 36, and the guard plate has a down ball contacts with the central portion of the guard plate 33 and prevents the central portion of the guard from being flexed away from the substance when the substance is rubbing thereagainst. At the same time, this anti-friction contact between the ball 41 and the guard plate 33 does not inter fere with the rotative movement of the knife. The knife guard construction 32 and its attendant parts are disclosed and claimed in applicant’s copending case Serial No. 719,692, filed April 9, 1934, which matured into Patent No. 2,065,572 on December 29, 1936. As will be seen from an inspection of Figs. l, 2, 12 and 13, the base is provided with a raised tubu lar portion 48 which encloses the guide rod 49 and acts as a cover for the same. The ends of the guide rod are mounted within suitable openings in the ends of the tubular portion 48 and secured in place against longitudinal movement by the screws 56 and washers 5|. A bearing member 52 20 _surrounds the guide rod 49 and is guided thereby for longitudinal movement. This bearing mem ber has a lateral extension 53 (see Fig. 13) to which is secured a depending flange 54 on the substance support. The substance support is 25 perhaps best illustrated in Figs. 1, 2, 3, 6, 10 and 11, and comprises a V-shaped trough 55 which has a skirt portion 56 on the slicing knife side thereof. The flange 54 forms an extension of the skirt 56 and is attached by suitable screws 51 and 30 locating pins 58, the latter holding the support in proper position with respect to the lateral exten sion 53 on the bearing 52. The substance support is also supported for reciprocating movement at the side thereof re mote from the cutting plane of the knife, and in the manner which is best illustrated in Figs. 1 and 3. The base is provided with a U-shaped guide 59, and the depending lug 60 on the carriage carries a roller 6| mounted for rotation on the fl l) stub shaft 62. The roller 6| engages the upper and lower arms on the U-shaped guide 59 to pre vent vertical movement of the substance support. A handle 63 is provided on the operator’s side of the substance support and is supported at the opposite ends thereof by the arm 64 and depend ing lug 65. By applying manual pressure to the handle 63, the substance support may be recipro cated in a direction parallel to the cutting plane of the knife. The clamp for the substance is indicated gen erally by the reference numeral 66, and is secured wardly extending ñnger 31 provided with a notch to a bearing member 61 which has a cylindrical 38. As is clearly illustrated in Figs. 3 and 4, a pin 39 is secured to the knife supporting bracket 2|. Also, as is clearly illustrated in Figs. 2 and 4, a screw 40 is secured to one side of the base. The screw 40 and the pin 39 are adapted to be received opening therein embracing the upright 68 so that within the notches 38 and 36 respectively when 60 the guard and guard plate are in operative posi tion. The guard 32 is provided at its upper por tion with a laterally extending screw 4|, and this screw is received within a notch 42 in the bracket 43 secured by screws 44 to the upper surface of the knife supporting bracket 2|. The screw 4| is provided with a thumb nut 45 which draws the guard 32 firmly against the bracket 43. The guard is provided with bosses 46` which abut against the bracket 43. The` guard and guard plate may be quickly removed by loosening the thumb nut 45 and lifting the guard and guard plate vertically. As will be noted from an inspec tion of Fig. 5, the nut 26 is provided with an anti friction ball 41 which is pressed into a suitable 75,. recess in the nut to hold the ball in place. This the clamp 66 may be moved up and down as de sired along the upright 68. Separation of the up right and bearing member ‘61 is prevented by means of a washer 69 and screw 18. In order to prevent turning movement of the clamp, I provide the bearing member 61 with a laterally extending 60 arm 1| having a U-shaped extension 12 embrac ing the second upright 13. One of the arms of the U-shaped portion 12 is provided with a spring-pressed friction bearing member within the cylindrical portion 14 (see Fig. 1). Both of the uprights 68 and 13 are carried by a bearing member 15 which extends beneath the substance support 5,5 and is guided by the guide rods 16 and 11 in a direction substantially perpendicular to and from the cutting plane of the knife. The 70 portion of the bearing member 15 which extends beneath the support 55 is provided with two sets of rollers, each set including four rollers spaced circumferentially about the rod 11. These rollers are indicated by the reference numeral 18 and 75 3 `2,126,380 have their peripheries shaped to conform with the cylindrical surface of the guide rod, as is clearly illustrated in Fig. 10. These rollers ro tate on the spindles 19 provided on the bearing member 15. The bearing member 15 also has a lateral extension 8|) which is provided with a roller 8| mounted to rotate on the screw 82 and has VtheV peripheral surface thereof shaped to conform to the cylindrical surface of the guide rod 16. The roller 8| prevents movement of the bearing mem ber 15 in one direction, and the pin 83 Vprevents movement of the bearing member in the opposite direction. If desired, another roller similar to 8| may be provided in place of the pin 83. The means for feeding the bearing 15 and conse 15 quently the clamp, in a direction toward the cut ting plane of the knife is . best' illustrated in Figs. 10 and 11.v In these figures, 84 represents a rod having a threaded portion 85 threaded into 20 the boss 86 and secured in place by nut 81. The opposite end of the rod extends through an open ing 88 in the flange 89 which extends downwardly at the side of the substance support remote from the cutting plane and is held in spaced relation centrally within the opening 88 by means of a washer 90 held in place on the end of the rod 84 by a screw 9|. A spring 92 surrounds the rod 84 and abuts at one end against the washer 90, and at the other end the spring abuts against ‘the end 30 of acup-shaped member 93 provided in the bearing 15. The spring normally tends to move the bear ing 15 and clamp in a direction toward the Vcutting plane of the knife. The spring can'be removed for repairs or replacement by removing the screw 9| and sliding the spring over the rod 84 through the opening 88. ' As will be noted from an inspection of Fig. 3, the opposite ends ofthe guide rod 16 are sup ported in the laterally extending lugs 94. To one 40 of these lugs 94 there is secured, by means of the screws 9‘6, a guide 95 which extends upwardly and away from the cutting plane of the knife and is provided at its upper end with a notch 91.> The bearing 61 on the clamp 66 is provided with an adjustable screw 98 which contacts with the guide 95 so that when the bearing member 61 is moved upwardly along the uprights 68 and 13, the clamp will be automatically moved away from the cut ting plane of the knife. The reason for doing 50 this is that the sharpening apparatus 99, which is pivoted at |80 to the bracket 43, extends on both sides of the cutting plane of the knife, as will be seen from an inspection of Fig. 2. ’There fore, if the forward side of the clamp or pusher Ul Ur plate 66 is too close to the cutting plane of the knife in its upper or inoperativeposition, it will strike the sharpening apparatus and will damage the same, or will damage the prongs (later to be described) provided on the clamp ‘66. The details of the sharpening apparatus will not be herein described except to say that the sharpening stones- ||l| and |92 engage the knife on opposite sides thereof and have a casing |03 for protecting the same. It will be noted that the sharpening apparatus 99 extends over `the forward edge of the knife and acts as a guard therefor, and is in a position `to be readily moved into engagement with the knife when desired. When the clamp is in its uppermost position, 70 the screw 98 is ararnged within the notch 91 to prevent downward movement of the clamp due to vibratory movement of the slicing machine and against accidental movement downwardly in case the clamp is struck. 75. The slice receiving tray is supported on a bracket |94 which in turn is supported in any suitable manner on the side of the base 20. The substance support 55 has the upper surface thereof provided with ribs extending in a direc tion toward the cutting plane of the knife. These Ul ribs, as clearly illustrated in the plan view in Fig. 2, and in cross-sectional views in Figs. 7 and 8, are relatively broad remote from the cut ting plane of the knife and then become sharper adjacent the cutting plane of the knife, the broad portions being indicated by the reference char acter |95, and the> narrower portions by the reference character |96. It will also be noted, from an inspection of Fig. '1, that the ribs have the upper surfaces thereof sloping downwardly toward the cutting plane of the knife. This is to facilitate the feeding of the substance toward the cutting plane, for with the spring pressure on the clamp or pusher plate 66, the feeding of the substance is resisted if the ribs are at the same 20 height throughout their entire length or are in clined upwardly toward the cutting plane. In Fig. '7 the reference numeral |01 represents a line which is parallel to the guide rods 16 and 11, and the amount of inclination from one end of the rib to the other is indicated by the refer ence character A. Preferably, one side of that portion of the rib which lies adjacent to the cut ting plane of the knife is perpendicular to the supporting surface of the substance support, as 30 indicated at |98. Thus when the ribs bite into the under side of the substance being cut,`there is a series of vertical abutment faces |98 which prevent the substance from moving away from the knife or upwardly with respect to the sub stance support. It will be noted that the ribs on the rear abutment wall |89 of the substance support are substantially rounded in cross-section throughout their entire length. These ribs are indicated by the reference numeral lli). The 40 rounded portion of the ribs, both on the abut ment Wall |99 and on the main substance sup porting surface of the substance support, provide broad surfaces for supporting the substance without digging into the substance, and at the 45 same time provide recesses therebetween which prevent the formation of any appreciable amount of suction between the substance support and the substance. ' The substance clamp is provided with a plate 50 il | on the slicing knife side thereof, and this plate | || is substantially parallel with the cut ting plane of the knife. The face of the plate ill is provided with a series of ilat prongs H2 which are pointed in one direction, and the flat 55 faces of these prongs are inclined to the vertical in a direction upwardly and away from the oper ator’s position. It will also be noted that the flat faces of these prongs are not perpendicular to the substance supporting surface of theV sub stance support, but are incliñed thereto and in a direction upwardly and away from the operator. When the substance is being fed along the sub stance support by the pusher plate | l l, the prongs ||2 imbed themselves in the rear end of the sub stance, and the action of the cutting force of the knife on the substance, which is substantially in a horizontal direction to the right, as viewed in Fig. 6, causes the substance to be forced down against the substance support and into engage ment with the ribs, so that the sharp portions of the ribs adjacent the cutting plane of the knife will dig into the substance and prevent sliding movement thereof relative to the sub stance support in a direction toward the oper 75 4 2,126,380 ator’s position. This action is more pronounced a plane parallel to the movement of the substance as the substance becomes very short in the direc support and then tapers at an increased rate away from the same plane to provide room for the guard plate 33 so that the substance engag ing portion of the guard plate is substantially in the same plane as the peripheral edge of the knife. The forward edge of the guard plate is rounded, as at I20, so that the side of the sub stance after it passes the cutting edge of the knife does not have a sharp abutment against 10 tion of its feed toward the cutting plane of the knife, that is, when the plate III comes close to the cutting plane of the knife and there is only a small portion of the substance lbetween the plate I II and the knife, the action of the prongs H2 is more pronounced. Also, during the slic ing of the substance, the prongs tend to work holes in the end of the substance and can have relative sliding movement with respect to the end of the substance, but the sliding movement of the substance is always in a downward direction toward the substance support due to the inclina tion of the prongs. It Will be noted that the sum total of the substance engaging surfaces of the prongs is quite large, and therefore there is a very appreciable effect upon the substance by these prongs in the manner aforesaid. The plate 20 III is also provided with downwardly extending blunt prongs H3, so that if desired, the upper side of the substance may be engaged by the prongs and the substance fed along the substance support by the spring-pressure 'the same as when 25 the plate III is moved against the rear end of the substance. These prongs H3 are preferably used When there is a considerable portion of the substance to be sliced, and the pusher plate III is used when the substance becomes shorter. 30 There is another series of blunt prongs H4 formed on a plate H5 secured to the under side of the clamp 6G. These prongs extend at right angles to the main section of the plate and are parallel to the prongs H3. This double row cf prongs H3, II 4 tends more securely to grip the substance and provides contact with the sub stance at spaced distances along its length. The clamp is operated by the handle Hiì which ex 40 tends between the clamp and the arm 'II. The thickness of the slice is regulated by means of a gauge plate H‘I, which gauge plate is car ried by rod I I8 extending through the base and provided with an adjusting nut H9 at the oppo site end thereof, whereby the position of the gauge plate may be adjusted in a plane parallel to the cutting plane of the knife by turning the nut H9 which is threaded on the rod H8 and prevented from longitudinal movement in any suitable manner. An additional guiding rod (not 50 shown) is provided for the purpose of preventing turning movement of the gauge plate about the axis of the rod H8. The operation of the slicing machine is as fol lows: The substance to be sliced, if it is fairly long, is placed upon the substance carriage 55, and the operator moves the prongs H3 and H4 into engagement with the upper side of the sub stance by grasping the handle IIB and forcing the clamp downwardly along the uprights 68 and 60 13. While doing this, the clamp is retracted against the action of the spring 92, and after the substance has been engaged by the clamp, the spring pressure will urge the clamp and sub stance toward the cutting plane of the knife. When the carriage is in retracted position, as shown in Fig. 1, the substance will be forced against the gauge plate I I1, and when the oper ator pushes the carriage forward by manual pressure applied to the handle 63, the substance 70 will engage the slicing knife and a slice will be out from the substance and deflected by the de fiector 29. The cutting edge of the knife is best shown in Fig. 5 in cross-section, and this cross seetion is such that on the substance side of the 75 knife, the face thereof tapers slightly away from which it must move before it passes into engage ment with the broad surface of the guard plate. This prevents the forward edge of the guard plate from tearing portions of the substance therefrom and forming scraps, as happens with the usual type of guard plate in which the for ward edge thereof is not rounded. In actual tests on this machine in cutting a soft substance which readily forms scraps in the lusual slicing ma chine, I find that almost a negligible quantity 20 of scraps is formed and that bleeding of the sub stance is minimized. One reason for this is the narrow face I2I of the knife directly behind the cutting edge thereof. This face is approximately not over 1/2 inch in width. Another reason for this is that the guard plate is brought close to the peripheral edge of the knife and prevents the substance from rubbing on the face I2I thereof. A still further reason for this highly desirable re sult is the sloping of the face I2I away from the 30 edge in a direction slightly away from a plane parallel to the direction of movement of the sub stance carriage. Ordinarily, with a spring feed, the substance is caused to rub against the edge of the knife, and this results in larding of the knife. However, this is prevented in my machine due to the very small amount of space between the peripheral edge of the knife and the guard plate which form points of contact for the sub stance Whieh substantially prevent the inter 40 mediate portion of the substance from engaging the knife and thereby causing larding thereof. The particular knife construction herein shown is disclosed and claimed in applicant’s divisional application Serial No. 637, filed January 7, 1935, which issued into Patent No. 2,055,818 on Sep tember 29, 1936. After the substance has been sliced to such an extent that only a small part of the substance remains, the clamp is moved away from the cut ting plane of the knife to such a position that the plate HI can be brought down behind the rear end of the substance and then into engage ment with the rear end to cause a feeding of the substance by the spring pressure of spring 92. The distance the substance may be moved toward the cutting plane of the knife is regulated by the adjusting screw 98, and the adjustment is such that the forward ends of the prongs H2 are just outside of the cutting plane of the knife 60 so as to clear the knife when the clamp is at its extreme forward position towards the cutting plane of the knife. This position, however, brings portions of the clamp beneath the grind ing unit, and it is for this reason that the guide 95 is provided so that the clamp will be drawn away from the cutting plane of the knife if moved to its uppermost position. In Fig. 9 I have shown a modified form of rib in which the portion of the rib adjacent the cut ting plane of the knife has a cross-section such that two sides thereof slope equally with respect to a vertical line erected to the substance surface. In Figs. 14, 15, 16, and 17, I have shown a modified form of my invention in which the sub 2,126,380 stance support |22 is provided with similarly shaped ribs to those shown in the form of my invention illustrated in Figs. 1, 2, 3, etc., but in this form of the invention, the pusher plate |23, which corresponds to the plate ||| previously described, is carried by a tubular member |24 slidable within the handle |25 which in turn is attached to the substance support by means of the arms |26 and |27. The arm |2'| is provided 10 with an opening |28 adapted to receive the pin |29 secured to the substance support. The arm |25 is slotted at |30, and a lug |3| on the sub~ stance support is provided with a stud |32 on which there is threaded a wing nut |33. This wing nut |33 has a conical seat |34 0n the bot tom thereof adapted to be arranged within a con~ ical seat |35 formed in the edge of the opening forming the slot |30. With this arrangement it is only necessary to loosen the wing nut |33 a 20 small amount and then swing the clamp and entire feeding mechanism about the pin |29 as a pivot until the arm |26 is free of the stud |32, and then lift the entire clamping mechanism vertically. 25 . 'I‘he plate |23 is provided with prongs |33` which are formed the same as the prongs ||2 in the first form of the invention described. The plate is also provided with a guide rod |31 ex tending through an opening in the downwardly 30 extending lug |38 formed on the handle |25. The coil spring |39 is arranged within the tubular member |24 and handle |25 and abuts at one end against the plate |23 and at the other end against a plug |42 screw threaded into the handle 35 |25. This plug can be removed and the spring removed for replacement or repair. Also, the spring tension can be regulated somewhat by this plug. The amount of movement which may be given the plate |23 by the spring |39 is lim 40 ited by the washer |4| secured to- the end of the guide rod |31 by the screw |42. A handle |43 secured to the rear side of the plate |23 is pro vided for the purpose of drawing the plate back wardly against the action of the spring. The plate `|23 in this form of the invention is used only when cutting short ends of substance, and for the purpose of preventing the operator from positioning his hand too close to the substance, 5 relative to said knife in a path substantially par»4A allel to the cutting plane of said knife, a plu rality of ribs on said substance support, means for feeding a substance along said support to ward the cutting plane of said knife, said ribs Ul having sharp substance engaging portions ad jacent the cutting plane of said knife, of a cross section such that one side of the rib is substan tially perpendicular to the substance support and the opposite side thereof is at a substantial angle to the substance support, the perpendicular side of said rib facing in a direction toward the cut ting edge of said knife, and said ribs having a cross-section remote from the cutting plane of said knife which is substantially arcuate in cross section to provide a broad substance engaging portion which will not cut into the substance. 2. A slicing machine comprising a substance support and a slicing knife movable relative to each other, a pusher plate for feeding the sub stance along said substance support toward the cutting plane of said knife, and a plurality of prongs having flat sides thereon which are nor mal to the plate and arranged at an inclination to the supporting surface of said substance sup 25 port, the inclination being upwardly and toward the cutting edge of the knife, whereby the action of the knife upon the substance during the slic ing operation forces the substance against said ñat sides and downwardly against the substance support to more firmly hold the substance on said substance support during the slicing oper a ion. 3. In a slicing machine, the combination with a slicing knife, of a substance support, a pusher n plate arranged substantially parallel to the cut ting plane of said knife in a path> substantially parallel to the cutting plane of said knife, and a plurality of prongs on said plate normal to the plate and extending toward said cutting plane . and having flat surfaces thereon facing in a direction toward the cutting edge of said knife when the knife and support are in inoperative positions relative to each other, the inclination of said fiat surfaces being in a direction up as well as to impart a uniform pressure to the substance while it is being sliced. When a long wardly away from the surface of said support and toward the cutting edge of said knife, where by the action of said knife on the substance as the slice is being cut forces the substance against the flat surfaces, and the flat surfaces in turn piece of substance is to be sliced, the wing nut react on the substance to force the same into is loosened and the feeding means is removed. The substance then can be grasped by the oper ator and advanced toward the cutting plane of the knife and against the substance support. In the modification of the invention shown in Figs. 14 to 17 inclusive, there is provided a handle |44 for actuating the substance support, but it is not necessary that this be used when the feeding mechanism is in position, for the handle |25 may be grasped and used as a means for recip rocating the substance table. Obviously, those skilled in the art to which this invention pertains may make various changes in the construction and the arrangement of the ` parts shown in the drawings without departing from the spirit of this invention, and the right is hereby reserved to make all such changes as fairly fall within the scope of the following 70 claims. Having thus fully described my invention, what I claim as new and desire to obtain by Letters Patent is: 1. In a slicing machine, the combination with a slicing knife, of a substance support movable 75 ñrm engagement with the substance support. 4. In a slicing machine, the combination with a slicing knife, of a substance support movable relative to said knife in a direction substantially parallel to the cutting plane thereof, a clamp mounted on said substance support for feeding the substance toward the cutting plane of said knife, said clamp being movable in a direction toward the cutting plane of said knife and lim 60 ited in its movement toward said cutting plane to such an extent that the side of the clamp near est the cutting plane can move to a point im mediately adjacent the cutting plane of said knife, but not into the cutting plane, so as to prevent engagement of the slicing knife with the clamp, said clamp being also movable upwardly away from the cutting plane of said knife to an inoperative position, and means including a ver ticallyr extending guide member mounted on the 70 substance support and means on said clamp co operating with said guide to displace the clamp laterally from the plane of the knife when the clamp is raised to inoperative position, whereby a liberal clearance is provided between the clamp 75 6 2,126,380 and the cutting plane of said knife when ‘said clamp is in inoperative position. toward'the cutting plane of said knife, mounted on said member which is rigidly and releasably secured to said substance support. 9. In a slicing machine, the combination with a substance support, of a slicing knife, means for Cl moving said knife and support relative to- each 5. In a slicing machine, the combination with a slicing knife, a substance support movable rela tive to said knife, and an obstruction projecting beyond the cutting plane of said knife, a clamp on said support movable toward the cutting plane of said knife and having the end of its path of movement toward the cutting plane while in op erative position closely adjacent to, but not en other, feeding mechanism:` for feeding the sub stance toward the cutting plane of said knife, comprising a member releasably secured to said support, a spring-pressed plate mounted on said 10 tering the cutting plane of said knife, whereby member for engaging the substance and feeding the same toward the cutting plane of said knife, substantially all of the substance may be sliced, said clamp being also movable away from said substance support to an inoperative position, a guide for moving the clamp simultaneously away from the cutting plane as the clamp moves to and a plurality of prongs on said plate extend ing toward the cutting plane of said knife and having substantially fiat faces thereon facing in a direction toward the cutting edge of said'knife when the support and knife are in their inopera tive positions relative to each other. inoperative position to clear the said obstruction in all positions of adjustment of said substance support, said guide including a vertically extend ing member mounted on the substance support, and means cooperating with said guide to dis place the clamp laterally from the plane of the knife when the clamp is raised to inoperative position. 10. In a slicing machine, the combination with a substance support, of a slicing knife, means for moving said knife and support relative to each other, feeding mechanism for feeding the sub stance toward the cutting plane of said knife, comprising a member releasably secured to said support, a spring-pressed plate mounted on'said member for engaging the substance and feeding the same toward the cutting plane of said knife, 6. In a slicing machine, the combination with a substance support, of a slicing knife movable rel ative to said support, a gauge plate for gauging the thickness of the slices to be cut, a feeding mechanism for feeding the substance toward and a plurality of prongs on said plate extending toward the cutting plane of said knife and hav ing substantially flat faces thereon facing in a 30 direction toward the cutting edge of said knife the cutting plane of said knife, a member'rigidly and releasably mounted on said support, having an operating handle thereon extending substan tially at right angles to the cutting plane for use in m‘oving said feeding mechanism from- said support and for operating said support when it is desired to move said knife and support rela when the support and knife are in their in operative positions relative to each other, and said substantially fiat faces sloping in a direction upwardly away from the supporting surface of said support and toward the cutting edge of said tive to each other, a pusher plate, means for knife. 11. A slicing machine comprising a food pusher plate, a plurality of spaced prongs having fiat faces on said pusher plate extending substantially mounting the pusher plate on the handle for slid able movement thereon toward the gauge plate, and means for yieldingly urging the pusher plate with respect to the handle in a direction toward at right angles from the plate, said prongs being longerv vertically than the horizontalV width thereof, and inclining upwardly and away from the cutting plane of said knife. '7. In a slicing machine, the combination with a substance support, of a slicing knife movable relative to said support, a gauge plate for gaug the operator’s end of said slicing machine. ing the thickness of the slices to be out, a feed ing mechanism for feeding the substance toward the cutting plane of said knife, a member rigidly and releasably mounted on said support, having an operating handle thereon for use in moving said feeding mechanism from said support and for operating said support when it is desired to move said knife and support relative to each other, and a pusher plate slidably mounted with respect to said handle and yieldingly urged in a direction toward the cutting plane of said knife, said yield ing means comprising a spring arranged within said handle and abutting against a rigid portion of said handle and said plate, said plate having a (50 tubular extension thereon slidably arranged within said handle for guiding said plate. 13. In a slicing machine, a slicing knife, a car riage reciprocable across the face of the knife hav ing a substance support, a gauge plate having the substance engaging surface thereof arranged sub stantially parallel to the cutting plane of the knife, spaced ribs formed on the substance sup port extending toward the knife cutting plane, the tops of said ribs adjacent the cutting plane being relatively sharp and the rib tops remote from the cutting plane being relatively rounded, _ 8. In a slicing machine, the combination of a slicing knife and a substance support movable relative to each other, of a feeding mechanism (S 5 releasably mounted on said support, Vhavingv a rigid portion thereof releasably secured to said support, said releasable securing means compris ing a pair of arms on said member, a projection on one of said arms receivable within a recess formed in said support, a clamping screw mounted on said support adapted to be received within a notched portion on the other of said arms and clamped against said arms to hold the same in juxta-position with respect to said support, and a yielding presser plate for feeding the substance > 12. A slicing machine comprising a rotaryA knife, a reciprocal carriage, a food pusher adapted to push food along the carriage toward the cut ting plane of the knife, a handle for operating the carriage, and a coiled spring carried in said han dle and independent of movement of said handle for urging the pusher toward the cutting plane of the knife. GU a feeding member for feeding substance along . the substance support of the carriage toward the cutting plane, the tops of said ribs adjacent the cutting plane being lower than the rib tops remote from the cutting plane. 14. In a slicing machine, the combination with a slicing knife, a substance support mlovable‘r'el ative to said knife, and an obstruction projecting 70 beyond the cutting plane of said knife, a clamp on said support movable toward the cutting plane of said knife and having the end of its path of movement toward the cutting plane while in op erative position closely adjacent to, but not en 75, 7 2,126,380 tering the cutting plane of said knife, whereby substantially all of the substance may be sliced, said clamp being also movable away from said substance support to an inoperative position, a cam member fixed to said carriage adjacent the cutting plane and a member on said clamp to Contact said cam when the clamp is moved to a position adjacent the cutting plane whereby should the clamping element be raised from the substance support it wil be moved away from the cutting plane to clear said obstruction. 15. A slicing machine comprising a substance support and a slicing knife movable relative to each other, a pusher plate for feeding the sub stance along said substance support toward the cutting plane of said knife, and a plurality of projections having flat sides thereon which are normal' to the plate and arranged at an in clination to a supporting surface of said sub stance support the inclination of the flat sides guiding the end of the substance toward the sup port when the action of the knife upon the sub stance during the slicing operation forces the sub stance against said Ílat sides of the projections 10 and downwardly against the substance support to more firmly hold the substance on said sub stance support during the slicing operation. JOSEPH FOLK.