US1743435A - Rotary slicing machine - Google Patents

Description

.I an. 14, 1930. J. H. DALEN 1,743,435

ROTARY sLIcING MACHIIlgE Filed March 3, 1928 5 Sheets-Sheet l l I I Il I I I I I .1. H. DALEN 1,743,435

ROTARY SLICING MACHINE Jan. 14, 1930.

Filed March 3, 1928 5 Sheets-Sheet 2 INVENTOR.

Jan. 14, 1930. J H. DALEN 1,743,435 ROTRY SLICING' MACHINE K Filed March 3, 192e 5 sheets-sheet 5 mi.: ink.

Jan. 14, 1930. 1 H, DALEN 1,743,435

ROTARY SLICING MACHINE Filedmaroh s, 192e 5 sheeths-sneex 4 7 1 6 j 22 z/ u n n 1v v "I" "Hmm" WWW- "WH" M /7 Wh HW l Il: Y ll IWInVhL lmll ""Mh,

/Zf l ,4/ 34 375676 (5i/I, 5,17 (J2-l v V -l INVENTOR. J'f vf/y Q NH ATTORNEY Jan. 14, 1930. J. H. DALEN ROTARY SLICING MACHINE 5 Shets-Sheet 5 Filed March 5. 1928 I N VEN TOR. $77,/ zfof ATTORNEY v Patented Jan. 14, 1930 JOHN n'. DALEN, or BERKELEY, CALIFORNIA ROTARY SLCING MAOHIE Application led March 3,

The invention forming the subjectmatter of this application relates to slicing machines7 and-particularly to the type of slicing machine Which is used for slicing thin separator sheets such as are commonly used in Wet-cell batteries.v

The primary object of the invention is the provision of a machine which rapidly and accurately slices thin Wet-battery separator sheets out or" a comparatively large block of Wood, said block being shaped to conform to the outline or" the separator sheets, and in Which machine a plurality of large blocks of Wood are automatically fed to the slicing blade.

A further object ont the invention is the provision of adjusting means tor a slicing machine by which the blades thereof may be minutely adjusted for slicing the separator sheets to the required thickness.

A still further object of the invention is the provision of a slicing disc in a slicing machine, said disc carrying the slicing blades in such a manner that the rotation oit the disc gradually impresses the blades With a carving motion into a Wood block held thereabove, thereby causing the blades to delaminate smooth and thin separator sheets.

Ano-ther object ot the invention is the provision ot a slicingmachine in which comparatively large bullis of seminished material, such as blocks of Wood, are held and fed by stationary guides against the top of a rotating disc, which disc carries blades thereon, the blades being so curved as to pare oli the lovvcrmost stratum of said Wood blocks by gradually and diagonally cutting thru the blocks; the line of cut being slightly diagonal to the direction oi the grain oi' the block and slightly diagonal to the edge of the block so as to secure a shearing cut apT proximately parallel with the grain and the edges of the block; said separator sheets to be so accurately cut as to have an even; overL all thickness, the disc being so designed that the delaminated slices readily drop therefrom by their own gravity upon conveyors conveniently disposed below the disc.

Another object of the invention is the prol vision ofl blade-sharpening means on a slic- 192s. serial No. 258,754.

ing machine which may be connected at Will to the blade holder disc so as to be actuated by the turning thereof; said sharpening means being moved relatively to said disc' in such a Way as to follow precisely the cut- Y ting edge of a blade.

The essential features of the invention in# volved in the carrying out or" the objects indicated are susceptible to modification7 but a preier'red embodiment of the invention is shown in the accompanying drawings', in which:

Figure l is a side View of the device;

Figure 2 is a plan viev7 of the slicing machine showing the feeding means partly cut away;

Figure 3 is a fragmentary plan view'o'f the blade-carrying disc;

Figure 4 is a sectionalv view taken on the line 4 4 of Figure 3;

Figure 5 is a plan view of Figure 4;

Figure 6 is a fragmentary, sectional View taken on the line 6 6 of Figure 2;

Figure 7 is a sectional view taken on the line 7 7 of Figure 3;

Figure 8 is a detailed View of the bladesharpening mechanism, showing the same partly in section; i

Figure 9 is a plan view of the blade-sharpening mechanism; and

Figure l() is a sectional view taken on the line 10-l0 of Figure 4.

In carrying out my invention.V I employ a frame, designated inV its entirety by the character A, which supports a slicing mechanism B. Above theV slicing mechanism are di"-V posed a plurality of feeding mechanisms C.

The trame A is illustrated as constructed` of angle irons 6 dispose-d so as to form a polygonal base, at the corners ot which uprights 7 extend vertically above the slicing mechanism B. The uprights are securedto the angle ironsl 6. The upper extremities of the upright members 7 are held together by brace members 8, said brace members extending substantially in parallelism vv'ith the top of the slicing mechanism B. The inside eX- tremities of said brace members are secured to each other in' such a manner as to leave an opening for the upwardly protruding parts of Y SOTv the slicing mechanism B to be hereinafter described. Struts 9 are secured to the base and are disposed so that the inside extremities thereof converge and form a support for a bearing box 11. A

y The slicing mechanism B comprises a spoked. wheel 12, a hub 13 depends downwardly therefrom into the bearing housing 11 and rests upon a ball bearing 14, as clearly shown in Figure 6. In order to maintain the spoked wheel 12 in its position, a shaft 16 extends thru the hub 13, theY wheel being rotatable around the shaft 16. The friction Vbetween the hub 13 and the shaft 16 is reduced by means of a ball bearing 17 in the upwardly protruding portion 18 of the hub.

The shaft 16 extends lthru the bearing box 11 and is held against axial upward move- 28 extends from one spoke to the next.

ment by a head 19 at the lower extremity7 thereof. A bracket 21 secured to the inner ends of the bracing members 8 receives the upper end of the shaft 16 and maintains the same in its fixed position by means of a pin 22 extending thru the shaft 16 and thru said bracket 21. A worm wheel 23 is ixedly secured to the hub 13 inside of the box 11 and is rotated by a worm 24 rotatably supported in the walls of said box. The worm 24, in turn, is rotated by anelectric motor 26 from which the power is transmitted to the worm 24 by any conventional transmission means such asa belt 27. f

The wheel 12 has six spokes therein and in every second space between the spokes a we plate 29 is secured to saidweb 28 by means of screws 31. The web is so shaped as to conform to the outline of the stationary plate 29. Vne edge of the plate 29 is curved for the purpose to be hereinafter described, and the curved edge 32 ofthe plate 29 determines the i shape and the extent of the web 28. In every other space between the spokes, another set of' stationary plates 33 is disposed, which nlatterplate is secured to the spokes by means ,of screws. The plates 33 extend to the outside periphery of the spokedwheel 12, the

Y inside edges of said plates 29 and 33 forming a hexagon orV other polygon, depending on the number of plates used. The plates 29 and 33 are on the same horizontal plane.

A blade-carrying plate 34 is secured to f wheel 12 and disposed at a higher level than the plates 29 and 33 and extends from the .outside periphery of the wheel 12 toward the plate 29 so as to leave a clearance between Y Vthe inside edge of the plate 34 and the curved edge 32 of the plate 29, said edges being parallel with each other. A slicing blade 36 is secured to the inside edge of the plate 34 in a manner clearly shown in Figure `7 The blade 36 is held against'the inclined edge 37 Y n of the plate 34 by means of a clamping block 38 which, in turn, issecured to thelplate 34 by means of screws 39. When itis desirable to adjust the blade 36,.the screw 39is loosened up, thereby permitting the manual adjustmentof the blade. It is to be noted lade 36 and the plate 29 and the difference between the level of the plates 29 and 34. The plate 34 must be raised or lowered, and this adjustment of said plate 34 is accomplished by the adjusting mechanism, clearly shown in Figure 4. nism is denoted in its entirety by numeral 42. At theV shorter end of the plate 34, a correspondingly shorter adjusting mechanism 43 is disposed, andas the operation and structure of both adjusting mechanisms are identical, except for the dimensions thereof, the description of the structure of the adjusting mechanism 42 will be sufficient to explain the operation of both adjusting mechanisms.V

The spoke of the wheel 12 has a depending lug 44 thereon, which is in` alignment with a bearing 46, depending from the rim 41 of said wheel. In the bearing, Aa shaft 47 is supported and maintained in an axially fixed eryl of the rim 41. In that case, any con-V ventional means may be employed for rotating the shaft such as a. square or polygonal socket in the end ofthe shaft, Hush with the bearing 46, in which socket a crank may be inserted for rotating the shaft when adjustment of the plate is required. n

A worm 52 is formed on the middle por- The adjustin Vmecha-` tion of the shaft 47, and it isv always in mesh j j with teeth 53 on the underside of a wedge 54. The wedge 54 is guided in its -move-V ment by a dovetail groove 56 as it 1s clearlyY shown in Figure 10, the 'dovetail 4groove being cut into the spoke of the wheel 12,

and being disposed so as to guide the wedge` 54V radially and in a horizontal plane..V The uppermost portion of the wedge is provided with a dovetail 57.V A rdove-tail groove 58 is cut-vin the underside ofthe plate 34,the inclination of said latter `groove being complementary to the inclined dovetail 57. When the Yshaft 47 Y is rotated, the worm 52 will cause the movement of the wedge 54 toward or away from the center of the wheel 12. rI-he movement of the 4wedge in a horizontal plane causes the dovetail 57 to slide in i are to be delaminated.

the dovetail groove 58. When the wedge is advanced toward the center of the wheel l2, the plate 39 will be raised thereby and vice versa.

In order to permit the use of similar graduations on both adjusting mechanisms 42 and 43, the wedge 54 and the corresponding inclination of the groove 58 are steeper in the adjusting mechanism 43 than that in 42, thus, compensating for the change in the length of the adjusting mechanisms. In case it is found necessary to provide a more substantial support for the plate 34, a third support, incorporating the adjusting mechanisms heretofore described, may be disposed at an intermediate point between the adjusting mechanisms 42 and 43. It is also possible to provide a web below the plate and render the same stationary and' employ an adjusting mechanism on the now stationary plates 29 and 33 for raising or lowering the same relative to the cutting edge of the blade 36, thereby adjustingA the spacing therebetween.

Each of the feeding mechanisms C comprises a guide 60 secured to the bracing members 8. The guide 60 consists of a plate bent at right angles. As the slicing mechanism B is rotated in a contra-clockwise direction, looking at Figure 2, the open side of the right angle guide points in a direction opposite to the rotation of the slicing mechanism so that the material guided thereby is pressed against the walls thereof by the rotationof the slic` ing mechanism. Bearing brackets 6l entend from one of the walls of the guide 60. A shaft 62 is slidable in the bearing brackets 6l. The downward movement of the shaft 62 is effected by the gravity thereof and is limited by a collar 63 on the shaft abutting the upper face of the bracket 61. The lower end of the shaft 62 flanged as at V64, to which flange is secured a rectangular guide block 66 slidable on the guide 60. The machine in the illustration isdesignedto cut rectangular battery separators. Therefore, both the guide and the guide block 66 are so shaped as to guide a rectangular wood block, not shown, from which the separator sheets The' guide block 66 conforms to the outline of the battery separator. In case any other shape of battery separator is desired, the shapes of the guide block 66 and the guide 60 are changed so as to conform therewith.

In order to facilitate the slicing of smooth battery separator sheets, the wooden blocks, from which the separators are cut, may be steamed before being placed in the guide 60. C Then by raising the shaft 62 in the brackets Gl. sufficient space is provided below the guide block 66 to permit the insertion of wooden blocks below the guide block 66 thus the steamed or otherwise prepared wooden G5 blocks are pressed against the stationary plates 29 and 33 by the weight of the shaft 62,-the flange 64, and the guide block 66. The raising ofthe shaft 62 is accomplished by means of a cord or cable 67 guided on a pulley 68 which is secured to a ceiling 69 0f thefbuilding. The cable 67 is manually actuated and may be secured to a hook or any other means on the wall of the shop, not shown.

The slicing of the battery separators is accomplished as follows The prepared wooden blocks are placed in the guide below the block 66 in the manner heretofore vdescribed, and they are held against the stationary plates 29 or 33. By starting the motor 26, the wheel l2 is rotated 'in a contraclockwise direction, as may be seen in Figurek 2.- As the plates 29 and 33 are on the same level, the plate 29 will readily slide under'the wooden block. The wider edge of the plate i 29 slides first under the block so that the edge ofthe blade nearest to the rim 41 is brought first into contact with the outside edge of the rectangular block. Further rotation of the wheel 12 causes the blade to further incise into the block. As the block is pressed against the lower plate 29, the thickness of the cut is determined by the space between the cutting' edge of the blade 36 and the top of the plate 29. The blade 36 is curved at such a radius that the outermost point thereof engages the outside edge of the block to be cut, while the innermost end of the cutting blade passes thru the inside edge of the block. The

rotation of the wheel l2 moves the blade 36 with a carvingmotion thru the whole crosssectional area of the wooden block, thereby. assuring a smooth cut, the line of cutbeing slightly diagonal to the .direction of the grain of the block and slightly diagonal tothe edge of the block, thereby resulting ina shearing cut approximately parallel with the grain and the edges of the block. As the spacing betweenl the cutting blade 36 and the top-of the plate 29 is accurately adjusted, the wholey vlength of the slice cut olf by the blade will be accurate and of even thickness thruout.

Immediately when Vthe outer end of the blade 36 cuts into'the outer edge of the block,

the delaminated portion of they block enters 1f into the spacing between'the bla-de 36 and the top of the plate 29. The curved edge V32 of the plate 29 is beveled as at 76, and the battery separator, sliced off by the blade 36, is

directed downwardly thereby. By the time theblade 36 completes the cut thru the block to the inner edge thereof,the whole slice lof the battery separator sheetv is below the blade, and when completely separated from the block, it slidesthru-the space by its own'.

gravity. The thickness of the battery separator sheet is accurately determined bythe adjustment-of the blade 36 by means of the adjusting mechanisms 42 and 43.

Conveyors 77 are disposed below 'the sliclll) ing mechanism B, each conveyor 77 being opposite to a feeding mechanism C so that when the battery separator sheets slide out of the slicing mechanism thru the space between the blade 36 and the plate 29, the separator sheets drop on the conveyor 77. One of said conveyors is shown in detail, while the position of the other four conveyors is indicated in dash-and-dotted lines in Figure 2. The conveyors shown in the present illustration-are manually operated by means of a hand wheel 7 8 rotating the opposite drums 79 by means of an endless belt 80. The battery separators are carried on the belt 77 out from below the slicing mechanism so that they may be removed therefrom without necessitating the handling of the battery separators belov7 the'machine. It is to be understood that a continuous conveyor, especially designed for the machine, may be employed to carry away the separator sheets from below the slicing mechanism. The conveyor 77 is shown as an illustration of the fact that the battery separators dropping thru the slicing mechanism are received by a conveyor, by which they are carried away from below the slicing mechanism. Y

The battery separators will be smoothly finished because of the fact that the blocks are steamed or otherwise prepared and the blades are curved so as to gradually, but speedily, enter the blocks with a carving or shearing motion so that while the blade moves into the wooden blocks in a direction toward the center of the slicing mechanism C, it also moves in an annular path so vthat the cut is nearly tangential, and nearly paralleling the grain of the block, thereby permitting the smooth cutting of the extremely thin separators without crimping the saine.

A blade-sharpening mechanism, denoted in itsentirety by the numeral 81, is'adapted to accurately grind the edge of the blade 36 and tobe guided along the said edge by the rotary movement of the Wheel 12 itself; The struc- Y ture of the grinder is clearly illustrated in Figure 8 and comprises a `rotating disc 82 made of carborundum or any other grinding material, said disc being rotated in the conventional mannerby an electric motor 83. A bearing sleeve 84 of the electric motor 83 is fixedly secured into a bracket 86, ,which bracket is formed with a dovetail 87 at the free end thereof. VA traveler 88 has a groove 89 therein, complementary to said dovetail 87 in which said dovetail is slidable. In a lug 91 on the traveler 88 is a crank shaft 92.

Said crankshaft is rotatable in the lug 91 and s f isheld against axial movement by a shoulder 93 and a collar 94 thereon disposed at the opposite sides of the lug 91. A jack screw 96 forms one end of the crank shaft 92, said screw being in engagement ywith athreaded hole `97 in the dovetail 89. The turning of the crank shaft 92 causes the power of the` screw to be applied to the bracket 86 for raising and lowering t-he same in a vertical plane as guided by a dovetail groove 89. The lmovement of the grinding disc 82 in a horizontal y vplane is effected by the movement of the traveler 88 along a rail 98 which is fixedly secured to a bracing member 8. The dovetail 99 of the rail '98 slidably engages a dovetail groove 101 in the traveler 88. `The traveler 88 is connected to the wheel 12 by means of a link 102, one end of which is pivotally secured to the traveler as at103, the other end thereof being pivotally and removably se-V The grinding of the blade 36 is performed as follows: First, the slicing mechanism B is rotated until the inside end of the blade is below the grinding disc 82. The length of the link 102 determines the position of the grinding disc 82. Then, by turningv the crankshaft 92, the jack screw 96 lowers the bracket 86 and the grinding disc 82 therewith until the same rests on the blade 36. New, the starting of the motor 83 rotates t-he disc 82 in a horizontal plane so that the disc grinds the blade 36 to a level with the horizontal top of the blade-carryingl plate 34. By manually rotating the wheel 12 in a clockwise direction, the blade 36 is gradually fed under the disc 82, and at the same time, the link 102 is moved by the eccentric mechanism 104 thereof. The rotating movement at said point 104 is transformed by the link 102 into a linear movement, sliding the traveler 88 on the rail 98. The location of the eccentric point 104 is so determined that the linear movement of the traveler 88 moves the grindcured at an eccentric point 104 on the wheel n ing disc 82 so as to follow the Vcurvature'ofV the blade 36 when the blade is fed below Athe disc'82. By manually rotating the wheel 12 back and forth, the blade is fed under the the required sharpness. Y

It is apparent from Figure 7 of the drawings that the edge of the blade 3G and the top of the blade 34 are in a single plane. When the blade is worn down, before the regrinding takes place, the clamp 38 is loosened and the blade is pulled out from under the plate 34- to the desired extent.y Then the clamp 38 is tightened, holding the blade in position while Vit is ground down by the aforesaid method to the level of theplate 34. Y

For the grinding of the lower face of the blade 36, the same grinder 81 is mounted on a curved guide (not shown) conforming to the radius of the blade.V The bevel of the grinding disc 82 is brought into contact with the lower surface of the blade 36. Then the V motor is started and the grinding devicetraverses the cutting edge of the'bla'de as it is sli d along its curved guide. This necessarily requires either the dismounting of the plate 34 with the'blade 36 and the removing thereof to another fixture and mounting thereof, or the removal of'pl'ate 29 and the lmounting of said curved guide in its place.

It will be recognized that a particularly compact device is provided to accomplish the above described methodfof slicing'the eX- tremely thin battery separator sheets; and one which combines accurateness with a ruggedness of construction and positiveness of operation, particularly adapted for its use. Being a unitary character, the device, after the adjustment of the blades, requires no further careful setting up and lends itselfto effective application by the labor ordinarily available.

Y Although I have shown and described the preferred embodiment of my invention, it is to be understood that changes within the domain of mere form or construction or arrangement maybe made by persons skilled'in the art without .involving any cha-nge in mode of operation or of'function or of results described in the appended claims.

Having thus described invention, what I now claim as novel 'and desire to secure by Letters Patent is:

I claim l. A slicing machine comprising a rotatable wheel having radial spokes, supporting plates supported by the spokes, adjustable plates supported by the spokes and in alternate relation to the tiret-named plates, cutting blades carried by the adjustable plates, stationary guides contiguous to the face of the plates and means for forcing an object within the guides into contact with the plates.

2. A slicing machine comprising a rotatable wheel having radial spokes, segmental plates affixed to the alternate pairs of spokes at a point intermediate the hub and the rim thereof, plates adjustable with relation to the plane of the fixed plates carried by the wheel and having cutting blades adjustably secured thereto, elongated guides having their ends in juxtaposition to the. faces of the fixed plates, plunger shafts within the guides and means for retaining the plunger shafts at the limit of their movement in one direction.

3. A slicing` machine comprising a rotatable wheel, segmental plates aflixed to the alternate pairs of the spokes of the wheel, cutting blades carried by the spokes in the alternate spaces therebetween, said cutting blades being adjustable with r-elation to the plane of the fixed plates.

-l. A slicing machine comprising a rotatable wheel, plates, the oilteifaces of which lie in the same plane and form a disc-like support, plates capable of vertical adjustment with relation to the plane of the support, means for reciprocally adjusting the movable plate journaled in dependent lugs carried by the wheel and a cutting blade carried by the movable plate.

5. A slicing machine comprisinga rotatablel wheel, plates the youter 'faces of vwhich lie in the same plane and Vform a disc-like support, plates capable of vertical adjustment with relation to the plane of the support, screw-threaded means for reciprocally vadjusting the movable plate 'journaled in dependent lugs carried by the wheel anda cutting blade carried by the movable plate.

6. A slicing machine-comprising a rotatable wheel, supporting plates spanning jthe alternate spaces between the spokes of the wheel and xedly related thereto, plates v affixed to the spokes and spaced inwardly/ of the lrim of the wheel interposed between `the rst-named plates, plates capable of reciprocal movement with relation to 'the inwardly spaced plates interposed between the outer curved surfaces thereof and V"the rim ofthe wheel, an adjustable cutter blade carried'by thev adjustable plates, inwardly tapering wedges supporting the adjustable plates 'and means for imparting reciprocal movement to the wedges.

7. A slicing' machine comprising a rotatable wheel, supporting plates spanning the alternate spaces between the spokes fof the wheel and fixedly related thereto, plates ailirred to the spokes Aand spaced inwardly of the gr-im of the wheel interposed betweenthe irst-namedplates, plates capable of reciprolcal vinovenient with relation Tto 4 the inwardly spaced plates interposed between `the outer 'curvedlsurfaces thereof andthe rim ofthe wheel, an "adjustable cutter blade 'carried by the adjustable plates, 'inwardly tapering wedges supporting the-adjustable plates and a worm gear'for imparting reciprocal movement to the wedges. 1

8. A slicing machine comprising -a wheel, plates spanning the 'alternatefspace's between the spokes of the wheel, 'grooves within the spokes, wedges capableof reciprocal movement with-in the grooves, lugs depending fromthe spokes, a worm j ournaled-in the-lugs for imparting reciprocal movement tothe wedges and cutting blade supported by -the wedges.

9. A slicing machine havino 'a supporting frame, braces carried by the rame, a wheel having va dependent hub, a lstationary shaft extending `:through the fhub, a bearing sur- `rounding theshaft-,st-ruts extending fromfthe frame members and ahixed to the bearing, a

worm wheel carried bythe hub` and having a worm 'meshing therewith, .platesspan-ning the alternate spaces 'between the spokes of the Y wheel and ailiXed thereto with their outer edges contiguous with the rim of the wheel, cutting' blades carried by the plates, 'plates interposedbetween the rst-named plates and aflixed to the spokes of thewheel having their outer curved faces spaced from the rim of the wheel, plates capable of vertical adjustment with relation to the plane -of ythe first-:named CII `rotatable wheel journaled within the frame and below the braces, plates spanning the al- YVternate spaces between the spokes and affixed thereto, cutting blades carried by the plates, plates capable of vertical adjustment with relation to the plane of the first-named plates interposed therebetween, sharpening mechanism carried by one of the braces and capable vof longitudinal reciprocal movement thereof, and a link eccentrically connecting the sharpening mechanism and one of the spokes of the wheel. j

11. A slicing machine having a frame, braces connecting portionsof the frame, a rotatable wheel journaled Withinthe frame and below the braces, plates spanning the alternate spaces between the spokes and affixed thereto, cutting blades carried by the plates, plates capable of vertical adjustment with relation to the plane of the first-named plates interposed therebetween, a sharpening mechanism carried by one of the braces and capable of longitudinal reciprocal movement thereof,V and a link eccentrically connecting the sharpening mechanism and one of the spokes of the wheel for positioning the sharpening mechanism with relation to the face of the cutting blade. Y

.12. A slicing machine having a frame, braces connecting portions of the frame, a rotatable wheel journaled within the frame and below the braces, plates spanning the alternate spaces between the spokes and affixed thereto, cutting blades carried by the plates, plates capable of vertical adjustment with revertical movement'to the sharpening mechascreW-threadedmeans for reciprocally acl-- justing the movable lates journaled in dependent lugs carried y the wheel and a cutting blades carried by the movable plate withl` its respective ends spaced at unequal distances from the rim of the wheel.

l5. A slicing machine comprising a rotatable wheel, plates, the outer faces of which lie in the same plane and form a disc-likek support, plates capable of vertical adjustment with relation to the plane of the support, screw-threaded means for reciprocally adjusting the movable plates journaled independent lugs carried by the wheel and curved cutting blades carried by the movable plates and positioned eccentrically with relation to the axis of the hub of the wheel.

, In testimony whereof l affix my signature.

JOHN H. DALEN.

ation to the plane of the first-named plates Y interposed therebetween, sharpening mechanism carried` byA the braces and capable of longitudinal reciprocal movement thereof, and a link 'eccentrically connecting the sharpening mechanism and one of the spokes of the wheel ,for automatically positioning the sharpening mechanism with relation to the cutting edge of the blade when the wheel is rocked upon its axis. v

V13. VA slicing machine having a frame, braces connecting portions of the frame, a

'rotatable wheel journaled within the frame and below the braces, plates spanning the alternate spaces between the spokes and affixed thereto, cutting blades carried by the plates, plates capable of vertical adjustment with relation to the plane of the lirst-namedplates interposed therebetween, sharpening mechanism carried by one of the braces and capable of longitudinal reciprocal movement thereof,

a link eccentrically connecting the sharpenf ing mechanism and one of the spokes of the wheel, and means for imparting reciprocal

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