Title:
DICING MACHINE
United States Patent 3664396


Abstract:
A reversible motor is connected through a speed reducing drive train to rotate a worm having pitched and pitchless grooves to advance intermittantly a ram mounted pressing head within a box fastened to a face plate holding interchangeable cutting frames and orificed plates to produce desired protrusions; the same drive train to rotate a shaft to which attach interchangeable cutting knives to revolve flush with the outward face of said face plate to sever the extrusions only upon the stationary position of said pressing head. The length of the extrusions for dicing is determined by the distance between the centers of the pitched and pitchless grooves of said worm, which is equal to the spacing between the blades disposed in quadrillations of the specific cutting frame chosen to produce said square extrusions. Reversing the rotation of the motor retracts the pressing head to its starting position in the box. A motor switch supplies electrical power to the motor and its direction of rotation is controlled by a forward reverse switch actuated by the closing and opening of the box door. A forward rotation limit switch stops the motor automatically at the completion of a full extrusion cycle and a reverse rotation limit switch stops the motor automatically at the completion of a full retracting cycle.



Inventors:
TREMBLAY GERARD A
Application Number:
05/103430
Publication Date:
05/23/1972
Filing Date:
01/04/1971
Assignee:
GERARD A. TREMBLAY
Primary Class:
Other Classes:
99/537, 241/101.01
International Classes:
B26D3/18; (IPC1-7): B26D3/26
Field of Search:
146/78A,113D,169
View Patent Images:
US Patent References:
3490505CUTTING DEVICE1970-01-20Holz
3091269Food handling apparatus1963-05-28Burns et al.
1369202Vegetable-cutting machine1921-02-22Stoltenberg



Primary Examiner:
Abercrombie, Willie G.
Claims:
I claim

1. A dicing machine for cutting fruits, vegetables and other foods in cubes and capable, through interchangeability of parts, of extruding and cutting such shapes as strips, slices, shreds, mincings, ricings, gratings, shoestrings, and also capable of extracting juices, crush ice, compress meats, etc., comprising:

2. A dicing machine as described in claim 1 including:

3. A dicing machine as described in claim 1 including:

4. A dicing machine as described in claim 1 including:

5. A dicing machine as described in claim 1 including:

6. A dicing machine as described in claim 1 including:

7. A dicing machine as described in claim 1 including:

8. A dicing machine as described in claim 1 including:

Description:
SUMMARY OF THE INVENTION

In its preferred form the invention comprises a reversible motor driven ram operated pressing head type machine for cutting fruits, vegetables and other foods, having a pitched and pitchless grooved worm determining the length of extrusions produced by the cutting blades of specific frames and by the orifices of specific plates, and the severance of the extrusions being accomplished by specific rotating knives, and a motor reversing means to retract the pressing head upon completion of the extruding cycle.

The principal object of the invention is to provide a sturdy, efficient, easily operated, safe to use, readily dismantable for cleaning and fully portable machine for cutting fruits, vegetables and other foods in small size cubes for dicing, principally, and also capable of producing such other shapes as square and round strips, slices, shreds, gratings, mincings, ricings, extracting juices, crushing ice, etc., in the preparation of soups, salads, side dishes, garnishings, cocktails, for french-frying, preserving and pickling, which will prove to be a great asset to restaurants, hotels, institutions and homes.

Other features of the invention reside in its construction and in the simple arrangement of its parts as hereinafter described and particularly pointed out in the appended claims.

In the accompanying drawings:

FIG. 1 is a side elevation, fully in section, of one embodiment of the invention.

FIG. 2 is a sectional view of the machine in direction I--I of FIG. 1 showing the face plate with a cutting frame having blades disposed in quadrillations and a cutting knife in position to sever the extrusions to produce cubes for dicing.

FIG. 3 is a rear view of the machine with a cut in direction IV--IV of FIG. 1 showing the teeth of the toothed block meshing into the grooves of the worm and the releasing bolt arrangement.

FIG. 4 is a sectional view in direction III--III of FIG. 1 showing the reducing gear train and the forward-reverse rotation switch and door actuating arrangements.

FIG. 5 is a sectional view in direction II--II of FIG. 1 showing the position of the motor in relation to the driving shaft and to the ram pressing head.

FIG. 6 is a frontal elevation of the essential components of the machine to achieve intermittancy of the ram's advance showing the pitched and pitchless grooves of the worm and toothed block arrangement.

FIG. 7 is a frontal elevation, partly in section, of the pressing head in the box showing the fashion in which a fruit or vegetable is pressed through the blades of a cutting frame.

FIG. 8 is a frontal elevation, partly in section, showing the lugs of the pressing head in lodged position in the spaces between the blades of a cutting frame at the end of a full extrusion cycle.

FIG. 9 is an isometric view of the box door and attaching fitting.

FIG. 10 is an isometric view of the box and attaching fittings.

FIG. 11 is an isometric view of a knife-guard pan retaining clip.

FIG. 12 is an isometric view of the pressing head with attching fitting.

FIG. 13 is an isometric view of the machine in the horizontal position and stripped of all removable parts for cleaning.

FIG. 14 is an isometric view of cutting frames and orificed plates and their attaching fitting.

FIG. 15 is an isometric view of the knife-guard pan.

FIG. 16 is an isometric view of a face plate leg.

FIG. 17 is an isometric view of a cross-cutting knife and attaching fitting.

FIG. 18 is an isometric view of a toothed knife.

FIG. 19 is a side view of a serrated blade.

Referring to FIGS. 1 to 19 inclusively, the illustrated dicing machine comprises a motor 1 having a resilient mounting 2 fastening to and within housing 3 which, in its turn, is fastened to the back face of face-plate 4. The driving shaft 5 of said motor is fitted with a pinion 6 which meshes with gear 7 fitted to one end of shaft 8 rotating in bearing 9 of bearing block 10 which is fastened to the top of said housing. The other end of said shaft is fitted with pinion 11 which meshes with gear 12 fitted to one end of shaft 13 rotating in bearing 14 of said bearing block. The other end of said shaft is fitted with pinion 15 which meshes with gear 16 fitted to shaft 17 rotating in bearing 18 of said bearing block and in straddling bearing 19 which is also fastened to said bearing block, and it meshes with gear 20 fitted to driving shaft 21 rotating in bearing 22 of said bearing block and in bearing 23 at the base of housing 3. This gear is fitted with lugs 24 which adapt in transversal groove 25 in one end of worm 26 where the latter has a centrally bored recess 27 adapting to the tapered end 28 of said driving shaft. The other end of said worm has stub shaft 29 which rotates in bearing 30 fastened to gear and worm housing 31 being, in its turn, fastened to the top of housing 3. The body of said worm has a plurality of grooves cut in its face in the following fashion: parallel or pitchless grooves 32 in 180° of its circumference or in half of its face, and single pitched or advancing type grooves 33 in the remaining 180° of its circumference or in the opposite half of its face. When said worm is driven in clockwise rotation, facing stub shaft 29, toothed block 34 having a plurality of teeth 35 meshing into said grooves is made to advance when said teeth are engaged in said single pitched grooves and to remain stationary when they are engaged in said pitchless grooves. This stationary position coincides with the position of cross-cutting knife 36 then revolving over the upper half of face-plate 4 and across the outward face of cutting frame 37 having its serrated blades disposed in quadrillations 38 and having its step-cut edges 39 seating into the step-cut edged opening 40 of said face-plate to sever extrusions produced by the advance of said toothed block when its teeth are engaged in the pitched grooves of said worm. Keying opening 41 in the hub 42 of said cross-cutting knife adapts to a similarly shaped extension 43 at the extremity of driving shaft 21, said extension being tapped centrally 44 to receive wingscrew 45 fastening said cross-cutting knife which has a progressively curved cutting edge 46 to sever extrusions with a slicing effect. One said extrusions have been severed, the knife continues to revolve over the lower or blank half of said face-plate, therefore being out of the way of other extrusions being formed.

Block carrier 47 contains said toothed block 34 and it travels within the walls of a trough-shaped guide 48 fastened to gear and worm housing 31 and to the ledge 49 of motor housing 3. It is equipped with rollers 50 which are inserted in its back member 51 and protruding slightly so as to ride over the flat surfaces 52 of said guide. Annular opening 53 in said back member allows the passage of releasing bolt 54 having a threaded portion 55 rotating in tapped hole 56 in the rear of said toothed block. Locking pin 57 is fitted transversally in the body of said bolt and adapts into groove 58 in the inner face of said back member when said toothed block's teeth are disengaged from the grooves of the worm. Coil spring 59 encircles the body of said bolt and exerts pressure between said back member and knob 60 to hold said disengaged position when the machine is not in use. Slot 61 in the front wall of said guide allows free sliding of said bolt and spring for the entire length of the worm. Hub 62 of said block carrier is fitted to the end of ram 63 and it is locked by setscrew 64 which also retains switch tripper arm 65. Bearing 66 of ledge 49 guides said ram in its travel and centers pressing head 67 with its hub 68 adapting to the end of said ram and being locked to the latter by means of a thumbscrew 69 for removability, said pressing head having a plurality of lugs 70 which lodge freely in the spaces between blades 38 of the cutting frame at the completion of an extruding cycle.

Box 71 has a slot 72 in its top wall to slide with generous clearance over said ram to permit removability for cleaning. Thumbscrews 73 fasten said box flanges 136 to said face-plate 4 and motor housing 3. Half hinges 74 and 75 of said box mate with half hinges 76 and 77 of door 78. Pin 79 adapts for pivotting into hole 80 and thumbscrew 81 adapts for pivotting in hole 82 and fastens into tapped hole 83. Pin 84 fitted to the inside top of said door coincides with annular opening 85 in the front face of said guide 48 to depress stem 86 of forward-reverse rotation switch 87 against spring 88 within said switch. A pull-knob 89 is fitted to the front face of said door. Parallel lugs 90 of said box are drilled and tapped to receive threaded pin 91 retaining latch 92 which is held in closed position by coil spring 93 fitting over lug 94. Forward limit switch 95 is retained by bracket 96 having a studbolt 97 adapting in slot 98 of said guide 48 for adjustment to advance or retard the completion of extrusion or crushing cycles as tripper arm 65 depresses switch button 99. Nut 100 locks said switch in calibrated positions. Reverse limit switch 101 is retained by bracket 102 having studbolt 103 adapting in slot 104 of said guide for adjustment to advance or retard the completion of the ram's retraction as tripper arm 105 fastened to the end of block carrier 47 depresses switch button 106 of said switch. On-off motor switch 107 is fastened to housing 3 and it is connected to said motor and to plug-in cord 108 which passes through opening 109 and resilient bushing 110. Forward rotation contacts 111 of said forward-reverse rotation switch are connected to one pole of said motor switch and to said motor's clockwise rotation terminal via forward limit switch, and reverse rotation contacts 112 of said forward-reverse rotation switch are connected to the other pole of said motor switch and to said motor's anticlockwise rotation terminal via reverse limit switch. The above connections provide operational safety of the machine as said contacts 111 are closed only upon said box door being shut causing said motor to rotate in the clockwise direction to advance the ram pressing head inside said box to extrude and the cross-cutting knife to revolve and sever the extrusions. Opening said box door closes contacts 112 causing said motor to rotate in the anticlockwise direction to retract said ram pressing head to the top of the box.

Back plate 113 is fastened to said motor housing 3 to close the latter and it is extended at its bottom edge to form a narrow angle bracket 114 to hold knife-guard pan 115 having flanged edge 116 being retained at two other points by clips 117 pivotting at the rear face of face-plate 4 by means of screws 118.

When the machine is operated in the vertical position, said face-plate is fitted with a plurality of legs or posts 119 being capped with resilient ends 120 and having reduced threaded portions 121 fastening into tapped holes 122 in the outward face of said face-plate. When the machine is operated in the horizontal position, extending legs 123 of said face-plate and 124 of said gear and worm housing are fitted with resilient ends 125 to provide four point support.

Frame 126, having serrated blades 127 disposed in parallel, has the same step-cut edges 39 as frame 37 and adapts into opening 40 of said face-plate to extrude slices.

Plate 128, having large orifices 129 in its surface coinciding with the inside dimensions of the box fitting over said plate, has the same step-cut edges 39 as frame 37 and adapts into opening 40 of said face-plate to extrude round strips.

Plate 130, having small orifices 131 in its surface coinciding with the inside dimensions of the box fitting over said plate, has the same step-cut edges 39 as frame 37 and adapts into opening 40 of said face-plate to extrude shoestrings and to extract juices.

Frames 37 and 126 and plates 128 and 130 have the same tapped hole 132 into which fits setscrew 133 having small end 134 adapting in hole 135 in the front flange 136 of said box to ensure proper alignment.

Progressively curved toothed knife 137 has a plurality of teeth 138 of a width equal to the length of the extrusions. It features the same keying opening in its hub as cross-cutting knife 46 and it attaches to driving shaft 21 with the same wingscrew 45.

The interchangeability of the above frames, plates and knives provides a wide selection of extrusions, cuts and shapes and their combinations will produce the following:

Cutting frame 37 having serrated blades 38 disposed in quadrillations, used with cross-cutting knife 36 fitted to driving shaft 21, will produce perfect cubes for dicing. The same frame used with toothed knife 137 will produce chips or gratings, and the same frame used with no knife will produce long square strips as required for french-frying.

Cutting frame 126 having serrated blades 127 disposed in parallel, used with cross-cutting knife 36 fitted to driving shaft 21, will produce short rectangular strips. The same frame used with toothed knife 137 will produce shreds, and the same frame used with no knife will produce slices.

Plate 128 having large orifices 129, used with cross-cutting knife 36 fitted to driving shaft 21, will produce short round pellets or discs. The same plate used with toothed knife 137 will produce mincings, and used with no knife it will produce long round strips or sticks.

Plate 130 having small orifices 131, used with cross-cutting knife 36 fitted to driving shaft 21, will produce ricings. The same plate used with toothed knife 137 will produce fine mincing, and used with no knife it will produce shoestrings. This plate is also used for extracting juices, crush ice, press meat for hambergers, etc.

The particular embodiment depicted was chosen solely for illustrative purposes, and is not intended to limit the extent of the invention as hereinafter claimed.