CA1053543A - Appliance, especially a household appliance for comminuting substances, such as meat, onions, or the like, that can be cut up - Google Patents
Appliance, especially a household appliance for comminuting substances, such as meat, onions, or the like, that can be cut upInfo
- Publication number
- CA1053543A CA1053543A CA274,704A CA274704A CA1053543A CA 1053543 A CA1053543 A CA 1053543A CA 274704 A CA274704 A CA 274704A CA 1053543 A CA1053543 A CA 1053543A
- Authority
- CA
- Canada
- Prior art keywords
- shaft
- cover
- rammer
- cutter head
- head
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C18/00—Disintegrating by knives or other cutting or tearing members which chop material into fragments
- B02C18/06—Disintegrating by knives or other cutting or tearing members which chop material into fragments with rotating knives
- B02C18/08—Disintegrating by knives or other cutting or tearing members which chop material into fragments with rotating knives within vertical containers
- B02C18/12—Disintegrating by knives or other cutting or tearing members which chop material into fragments with rotating knives within vertical containers with drive arranged below container
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47J—KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
- A47J43/00—Implements for preparing or holding food, not provided for in other groups of this subclass
- A47J43/04—Machines for domestic use not covered elsewhere, e.g. for grinding, mixing, stirring, kneading, emulsifying, whipping or beating foodstuffs, e.g. power-driven
- A47J43/046—Machines for domestic use not covered elsewhere, e.g. for grinding, mixing, stirring, kneading, emulsifying, whipping or beating foodstuffs, e.g. power-driven with tools driven from the bottom side
Landscapes
- Engineering & Computer Science (AREA)
- Food Science & Technology (AREA)
- Mechanical Engineering (AREA)
- Food-Manufacturing Devices (AREA)
- Crushing And Grinding (AREA)
- Crushing And Pulverization Processes (AREA)
- Preparation Of Fruits And Vegetables (AREA)
Abstract
ABSTRACT OF THE DISCLOSURE
The disclosure relates to an appliance for comminuting substances, such as meat, onions, or the like, adapted to being cut up. The appliance has a stationary cylindrical receptacle for the substances to be cut up, and a shaft rotating in the said receptacle and equipped with cutter blades. The blades are held in a cutter head adapted to move axially upon the shaft, and the cutter head is prevented from rotating relative to the shaft.
The receptacle is cup-shaped and the shaft extends centrally through its bottom. The appliance also comprises an electrical drive unit to drive said shaft; a cover to close said receptacle;
a manually-operated rammer axially displaceable in the cover, and means to prevent rotation of the rammer relative to the shaft.
A cutter head is adapted to rotate around the rammer, and means are provided to prevent the cutter from axially moving relative to the rammer. Both the rammer and the cutter head are secured to the cover in such a manner that they cannot be mislaid. A
return spring is used to hold the cutter head in its starting position.
The disclosure relates to an appliance for comminuting substances, such as meat, onions, or the like, adapted to being cut up. The appliance has a stationary cylindrical receptacle for the substances to be cut up, and a shaft rotating in the said receptacle and equipped with cutter blades. The blades are held in a cutter head adapted to move axially upon the shaft, and the cutter head is prevented from rotating relative to the shaft.
The receptacle is cup-shaped and the shaft extends centrally through its bottom. The appliance also comprises an electrical drive unit to drive said shaft; a cover to close said receptacle;
a manually-operated rammer axially displaceable in the cover, and means to prevent rotation of the rammer relative to the shaft.
A cutter head is adapted to rotate around the rammer, and means are provided to prevent the cutter from axially moving relative to the rammer. Both the rammer and the cutter head are secured to the cover in such a manner that they cannot be mislaid. A
return spring is used to hold the cutter head in its starting position.
Description
10S354;~
The l~lvention rclates to an appliance. More particul-arly, the invention rclates to a household appliance for commin-uting substances, especially meat, onions, or the like, that can be cut up. The appliance has a stationary cylindrical receptacle for the substances to be cut up and a shaft which rotates in the receptacle and is equipped with cutter blades. The blades are held in a cutter head which is adapted to move axially upon the shaft, but which is secured against rotation in relation thereto.
An appliance of this kind is described in German Patent 510,862. Such appliances have the advantage that the substance to be comminuted cannot be pressed and rubbed against a base.
Instead, the substance is in a kind of suspended state and is cut cleanly by the cutter blades, as if by a stroke.
This appliance of the prior art has a belt drive and is therefore unsuitable for household use. Furthermore, the mech-anism for adjusting the cutter head is so complex that it is ex-tremely difficult to empty and clean the receptacle which holds the substance to be cut up.
~- Another serious disadvantage of this appliance is that the operator may be injured by the blades while the device is in ` operation, with the result that it is impossible to use this ap-pliance at home.
It is an object of the invention to provide an appli-ance o~ the kind mentioned above, in which the known cutting principles are retained, while ~he cutter head may be manually adjusted by simple means~ The receptacle should be easily detach-able for emptying and cleaning purposes. Moreover, with such an appliance, it should be possible, without any additional measures, to adhere to the safety provisions prescribed for them.
According to the invention, this object may be achieved by passing the shaft centrally through the bottom of a cup-shaped `~
receptacle adapted to contain the substance to be cut up, and , . ~
~05~543 causing it to be driven by an electric drive unit. The recep-tacle is adapted to be closed by means of a cover; a manually operated rammer is axially displaceable through the said cover, but cannot rotate therein, the cutter head rotates around the said rammer, but cannot move axially relative thereto: both the rammer and the cutter head are secured to the said cover so that they cannot be mislaid; the cutter head is maintained in its starting position by means of a return spring. Therefore, the cover, the manually-operated rammer, and the cutter head consti-tute a detachable unit. If this unit is removed from the recep-tacle, all th~t remains therein is the shaft and hhis presents no danger even if the drive is ~nadvertently switched on. The receptacle may ea~ily be separated from the shaft, or it may be removed therewith from the drive unit, so that it may easily be emptied and cleaned.
Thus the invention relate~ to an appliance, for con~
minuting substances, such as meat, onions, or the like, adapted to being cut up, qaid appliance having a stationary cylindrical receptacle for the substances to be cut up, and a shaft rotating ~ 20 in the ~aid receptacle and equipped with cut~er blades, said blade~ being held in a cutter head adapted to move axially upon said ghaft, and mean~ to prevent said cutter head from rotating relative to said shaft, characterized in that the shaft extends centrally through the bottom of a cup-shaped receptacle adapted to hold the substance to be cut up, said appliance also compris-ing an electrical drive unit to drive the shaft, a cover to ` clo~e the receptacle, a manually-operated rammer axially dis-placeable in the cover, and means to prevent rotation of the rammer relative to the shaft, a cutter head adapted to rotate around the rammer, and mean~ to prevent the cutter head from axially moving relative to the rammer; both the rammer and the cutter head being secured to the cover in such ~ ' ~ ' , ' 105;~543 a manner that they cannot be mislaid, and a return spring to hold the cutter head in its starting position~
According to one embodiment of the inventicn, an ade-quate cutting torque may be achieved even with a small electric motor by interposing a reduction gear between the shaft of the motor and the shaft which drives the cutter headO
According to one aspect of the invention, the shaft is mounted to rotate at the bottom of the receptacle, but cannot be displased axially. The shaft is also adapted to be connected to the reduction gear drive shaft by means of a coupling. Thus, the shaft and the receptacle for the substance to be cut up con-stitute a unit which may easily be connected to, and disconnected from, the drive unit. The fact that the receptacle cannot be separated from the shaft has the advantage that, when the said receptacle is filled, the substance to be processed can reach only those areas which are fully covered by the cutter blades dur-ing the cutting operation.
According to another em~odiment, the operative connec- ;~
` tion between the electric motor and the shaft may be ~implified by allowing one end of the shaft to proiect from the receptacle, the projecting end being adapted to be introduced into the hous-ing of the-drive unit, to be journalled therein, and to be driven directly by the reduction gear. In this case, the end of the ^ shaft is preferably in the form of a worm gear engaging with a pinion provided on the motor shaft.
According to still another embodiment, the receptacle may also be removed without th~ shaft, as long as the shaft cannot be removed from the drive-unit housing, and as long as the recep-tacle i`s guided by and is held detachably to the shaft and the ~ ;
housing. In this case, the shaft is a part of the drive unit.
However, the shaft may also be a part of the unit con-sisting of the cover, the manual rammer, and the cutter head, as .
105,3S4~
lon~ as the shaft is detachable from the drive-unit housing, the receptacle is guided by and is held detachably to the shaft and housing, and as long as the said shaft is displaceable through the cutter head, but is secured thereto in such a manner that it cannot be mislaid. This design also makes pro~ision for a coup-ling between the shaft and the drive unit. In this case, the shaft is displaceable throu~h the cutter head, but is secured thereto so that it cannot be mislaid, the coupling end of the shaft projects from the receptacle and is adapted to be connected to a coupling part driven by the drive-unit reduction gear, and the receptacle is guided by and held detachably to the shaft and the housing.
In order to prevent the operator from being hurt, even when the drive unit is switched on, when replacing the cover and connecting the shaft with the outer head or the shaft with the drive unit, the cover is provided with an edge which covers the cutter head when the latter is in its starting position.
The location and guidance of the rammer through the cover is achieved by moulding onto the cover an outwardly-directed guide sleeve comprising a tubular manual ramming means closed off by a handle. For the purpose of securing the cutter head to the rammer, the cutter head has a sleeve-like holder. A portion of this sleeve-like holder is inserted into the open end of the ram-mer where it can rotate, but in which it cannot be displaced axi-ally. In order to enable the shaft to rotate with the axially displaceable cutter head in any position the latter may assume, the shaft is not circular, and is preferably hexagonal, in the ; portion over which the cutter head moves, the cross-section of the cutter head guide being adapted to this portion of the said shaft. The rammer is prevented from rotating inside the guide sleeve of the cover, but may move axially therein, by providing the outside of the said rammer, and the inner wall of the guide 105354~
sleeve, wit~l matching, axially displaceable guide webs and/or ~rooves.
The return spring which ~eeps the cutter head in start-ing position in ~he vicinity of the upper edge of the receptacle may be supported in various ways. According to one particular embodiment, the return spring surrounds the rammer, it bears against the guide sleeve provided in the cover and the handle of the rammer. The return spring may be enclosed by inserting it into the rammer and allowing it to bear against the handle there-of and against the cutter head.
As regards the design of the cutter head, the sleeve-` like carrier thereof has a shoulder which bears against the in-side of the cover, preferably in the vicinity of the guide sleeve moulded thereto, when the cutter head is in starting position, thus restricting any movement of the rammer.
Optimal utilization of the blades secured to the cutter head is achieved by limiting the working stroke of the rammer.
This is made possible by allowing the handle to come ro a stop against the guide sleeve provided in the cover, the working stroke 20 then corresponding to the maximum travel of the cutter head in the receptacle. The cutter head is preferably quite small and simple, thus allowing each blade to move through almost all of whatever substance is placed in the receptacle.
According to one embodiment, the receptacle is held in position, during the cutting operation, by the fact that the out-~- side of the bottom portion of the receptacle, and the drive-unit housing positively engage one another and cannot rotate in res~
pect to each other.
The cutting operation may be observed, and stopped at will, by making at least the receptacle of transparent material, preferably of a clear synthetic material.
The invention will be explained hereinafter in greater 105~354;3 detail in conjunc~iorl wi~h the various em~odimen~s illus~rate~
in the drawin~s attached hereto, wherein:
Fig. 1 shows an appliance in which the shaft is mounted to rotate in the receptacle and i5 connected to an elect,rical drive unit by means of a coupling, Fig. 2 shows an appliance in which the shaft cannot be removed from the drive unit and the receptacle is guided by and held detachably to the shaft and the drive unit, Fig. 3 shows an appliance in which the shaft is secured to the cutter head so that it cannot be mislaid, the shaft being guided in the bottom of the receptacle, and being connected to the drive unit by means of a coupling;
Fig. 4 is a partial view of the appliance, in which the ',~ cutter-blade carrier is easily removable; and Fig. 5 is a side elevational view of an appliance of a different design.
, The appliance which is illustrated in ~ig. 1 has anelectric drive unit which is arranged horizontally, so that the shaft of the motor also runs horizontally. In a slee-ve 12 of a ~'` 20 housing 10 there is a bearing bolt 13 which is provided with a rotatable worm gear 14. This worm gear 14 projects from housing ' 10 and is itself preferably designed as a coupling part 15. A
, conical guide 17 mounted on housing 10 surrounds coupling part 15.
,~ Receptacle 20 is in the form of a cup. Moulded onto the outside at the bottom of the receptacle 20, there is a guide ; cone 21 by means of which the receptacle is guided and held in known fashion in guide 17 over housing 10, during the cutting operation. A bushing 18 which accommodates the bearing portion 22 of shaft 19, which is smooth and has a reduced diameter is ~
inserted into guide cone 21 and allows bearing portion 22 to ro- '-'~ tate but prevents it from moving axially. The end of shaft 19 ~' projecting from guide cone 21 carries a matching coupling part 16 '' ' ' ' '. - - :: ', . ~' ~ -:
105;3543 ~y means of which shaft l9 is connected to driven coupling part 15. Shaft 19 is thus permanently secured to receptacle 20 to form a unit which may be quickly and easily placed upon drive unit ll and subsequently removed therefrom. This is an advantage when the receptacle has -to be filled, cleaned or emptied.
Shaft l9 extends through receptacle 20 which can be closed by means of a cover 24. Receptacle 20 and cover 24 carry matching elements 23, 25 of bayonet fasteners. These enable it to secure cover 24 to receptacle 20, to prevent the cover from being inadvertently removed from the receptacle 20 while the appliance is in operation. The direction in which cover 24 is rotated when closing it should correspond to the direction of rotation of the cutter head. The latter will be described hereinafter in greater detail.
Cover 24 has an edge 26, which covers the cutter head when the latter is in its starting position, and is also provided with a central, outwardly-directed guide sleeve 27. A tubular manual rammer 34 is inserted from the outside into the guide sleeve 27, the upper end of the rammer being closed off by means of a cap 36. This cap 36, with its attachment sleeve 37, is in~
serted into the tubular rammer 34 and is secured thereto. The edge 38 o the cap serves to support return spring 35 which is slipped over rammer 34. The other end of the spring 35 bears ~ -against the upper end of guide sleeve 27 on cover 24.
The lower end of rammer 34 extends as far as the under-surface of cover 24. A sleeve-shaped holder 30, with an attach-ment part 2i3, i8 inserted into this lower end. As indicated by groove 43 and clamping spring 33, holder 30 is arranged to rotate around rammer 34, but it cannot move axially therewith. The lower end-face of rammer 34 bears against shoulder 29 on holder 30, so ` that when rammer 34 is displaced, carrier 30 is positively dis-placed therewith.
lO'j3543 Cutter blacles 31, 32 arc cliametrically secured to hol-der 30 opposite one another. If holder 30 is made oi- a synthetic material, blades 31, 32 may be injec-tion-moulded. The top of shaft 1~ has a chamfer part 41 to facilitate the entry of the cutter head when cover 24 is placed upon receptacle 20. For the same reason, holder 30 has a conical mouth 42 facing receptacle 20. Blades 31, 32 are staggered axially in relation to one ano-ther. Shoulder 29 provided on holder 30 is held to cover 24, preferably in the vicinity of guide sleeve 27. Edge 26 of cover 24 covers at least front blade 31 when the latter is in the start-ing position shown in the drawing. In this position, blade 32 is spaced a small distance away from cover 24.
Within the range of travel of the cutter head, i.e. of the cutter-head holder 30, the surface of shaft 19 is provided with axially-directed guide webs and/or grooves. Holder 30 has a guide which matches the cross-section of shaft 19, and it can therefore move only axially along the shaft. If shaft 19 is in-;~ serted into holder 30 and is then caused to rotate, the cutter head will definitely rotate with the shaft, regardless of its axial position thereon. In the sarne or similar manner, raer 34 is prevented from rotating in guide sleeve 27 in cover 24, but may be adjusted axially. Since attachment part 28 allows the holder 30 to rotate relative to rammer 34, the rammer does not turn when the cutter head is rotated.
Rammer 34 can be displaced axiaLly until cap 36 comes to a stop agairlst the upper end of guide sleeve 27. This working stroke of the rammer corresponds to the distance 40 travelled by the cutter head. Blade 31 then assumes the position shown in dot-ted lines at 31' and is at a small distance from the bottom of receptacle 20. In the vicinity of bushing 18, the bottom of re-ceptacle 20 has a depression 39 into which holder 30 may be intro-duced. If rammer 34 is released, spring 35 returns the rammer and ~0~3543 the cut~er head to ~he starting posi~ion shown in the drawing, in which case the cutter head no lon~er rotates with shaft 19.
If the bayonet fasteners are released, cover 24 can be removed from receptacle 20, while the cutter head is being removed from shaft 19. The design of the cover, cutter head and shaft is preferably such that edge 26 of the cover releases the recep-tacle only when the cutter head moves out engagement with the shaft. This ensures that blade 31 can no longer be driven while being exposed. The danger of any injury is also eliminated even if shaft 19 is rotating when cover 24 is being removed. Converse-ly, when cover 24 is replaced on receptacle 20, the cutter head engages with shaft 19 only when edge 26 of the cover 24 covers receptacle 20 in such a manner that access to the blades is pre-; vented. ~ -... ..
~; The appliance according to Fig. 1 may, of course, also ~ ;
be designed with the shaft of the motor running vertically and shaft 19 running horizontally. Moreover, shaft 19, with coupling ;
part 16, may also be detachably secured in guide cone 21 of re~
ceptacle 20.
~, 20 As regards its use and method of operation, the appli-ance shown in Fig. 2 does not differ from that shown in Fig. 1, ; but the design of the cutter head is different. Blades 31, 32 are connected together by means of rings 44, 45. These rings are slipped onto sleeve-shaped holder 30 and are secured thereto.
Shaft 19 runs sufficiently freely in bushing 18 that the recep-tacle 20 can easily be removed from shaft 19. The end of shaft 19 is introduced into housiny 10 of drive unit 11 and is mounted therein. In this case, bearing pin 13 may be fixed in bearing sleeve 12, and shaft 19 may be mounted rotatably upon the bearing ; 30 pin. The end of shaft 19 itself may be provided with a worm gear 46 engaging with a pinion (not shown) on the shaft of the motor.
- In this case, shaft 19 may be permanently or detachably secured _g _ ,.,,, . ~ : . ::
: ~ - .':- .::' . ' :
105i3543 in housinc~ 10 of drive unit 11. In the latter case, the shaft can be removed from the drive unit. In either case, however, the receptacle 20 may be filled, emptied and cleaned without shaft 19.
As indicated, return spring 35 may also be mounted over shaft 19, so that it bears against both cutter-head carrier 30 and the bot-tom of receptacle 20.
In the appliance according to Fig. 3, shaft 19 is axi-ally displaceable in cu-tter-head holder 30, and is thus secured to the cutter head so that it cannot be mislaid. Before attach-ment part 28 of holder 30 is secured in rammer 34, the shaft must be introduced into holder 30 from a~ove, stopper 48 pre~ent-ing it from falling out. In this case, return spring 35 may easily be accommodated in rammer 34, so that it bears against cap 36 and stopper 48 of shaft 19. The lower end of shaft 19 rotates in bushing 18 and, through stop 47, it bears against the bottom of receptacle 20. The end of shaft 19 projecting away from guide cone 21 is itself in the form of a matching coupling part 49 and may be frictionally connected, in a manner known per se, to driven coupling part 15. Worm gear 14 and coupling part 15 may also be made in one piece.
One characteristic common to all embodiments is that the cutter head can be moved along shaft 19 by means of rammer 34.
Thus the cutter head must be axially displaceable upon shaft 19, it must not rotate about this shaft, on the contrary, it must ro-tate with it. The cutter head is rotatably connected to rammer ;~ 34 but is not axially displaceable relative thereto. Rammer 34 - is axially displaceable through cover 24, however, it cannot ro-tate therein. The cover, rammer and cutter head constitute a unit adapted to be connected to receptacle 20. The latter is in turn guided and held by housing 10 of drive unit 11, from which it may easily be removed. This basic design of the new appliance is quite simple and it meets, without any additional precautions, the l~Ci3543 saety ~ecluirements prescribed Lor such appliances.
As shown ir~ dotted lines in ~ig. 3, edge 50 o~ cover 24 may also be pulled down until it completely covers receptacle 20 placed upon drive unit 11. In this case, at least one e~tension on edge 50 of the cover may be in-troduced, through an opening 51, into housing 10 of drive unit 11. This extension is used to adjust the actuating element 53 of at least one safety switch 52.
The appliance can be switched on only when cover 24 is correctly in position and safety switch 52 is actuated. Edge 50 of the cover provides additional protection since, even if recep-tacle 20 is destroyed, blades 31, 32 are still completely covered and are therefore not accessible.
Fig. 4 shows an embodiment of the cover-rammer unit, in which the cutter head may be easily and safely removed. Rammer 34 is closed off by cap 36, edge 38 thereof being secured to i sleeve 73 of rammer 34 by means of a snap or bayonet fastener 72.In this case, return spring 35 does not bear against the cutter ., ~
~ head, but against bottom 63 of a guide cup 62 which is axially .
displaceable in rammer 34. A transverse pin 64 extends through cup 62, the ends of said pin running in internal grooves 65, 66 provided in guide sleeve 27 of cover 24. The travel distance of rammer 34 is restricted by diametrically opposite slots 60, 61 in which transverse pin 64 is guided. Bottom 63 of guide cup 62 béars against the end of shaft 19, which is preferably hexagonal, preferably through the projecting spherical end of metal insert 67.
If the cover 24 is removed from receptacle 20, return spring 35 forces transverse pin 64 against the lower ends of slots 60 and 61. ~owever, cover 24 may still be moved farther up, since internal grooves 65, 66 in guide sleeve 27 permit this. In this way, the cutter head, which is secured to the end of rammer 34, is released and may easily be replaced and cleaned. For this pur-pose, the other end of rammer 34 runs in a semicircular recess , ~ ' 10Cj3543 68 which has an outer groove and forrns an inner web which fits between end shoulders 29 and 71 of cutter-head holder 30. This makes it possible to introduce the cutter head radially into the recess 68, and it is then secured by a similarly shaped closure paLt which becomes flush with the outside of the rammer and car-ries a closing yoke 70 wnich is hinged to pin 69 on the said closure part. Yoke 70 is pivoted and locked, in the direction of rotation of the cutter head, into the outer groove provided in recess 68. This allows the cutter head to be removed from ram-mer 34 without overcoming the force of the spring. Moreover,after the cutter head has been removed, cover 24 may be removed from rammer 34. The rammer-cover unit is thus easily removed and reinstalled.
Cover 24 has at its edge a switch projection 74 which, - in the appliance according to Fig. 5, may be screwed, through a slot 75, into the interior of housing 10 of the drive unit. Cover 24 is then held in housing 10 in the axial directiGn of shaft 19 and may actuate an electric switch, e.g. a micro-switch. This makes it impossible to switch on the appliance until receptacle 20 and cover 24 are in place, which is an optimal way of complying -with the safety regulations. The bottom of receptacle 20 has an extension 77 which is positively introduced into a recess 78 - formed in step 79 of housing 10. This makes it impossible for receptacle 20 to rotate upon shaft 19.
Moulded onto cover 24 is an additional stop which limits the rotary motion of the cover, when the appliance is switched off, by bringing it to a stop against housing 10. Switch 81 pre-ferably releases automatically, so that when rammer 34 is released the cover 24 and the rammer 34 are returned and the appliance is switched off. The switch return spring is so strong that switch extension 74 on cover 24 is screwed out of slot 75 in housing 10 and may then be removed.
lOt~3543 Bottom trough 76 o housing 10 covers a separate trans-mission compartment, in wllich interrnedi.ate years 83, 84 are coup-pled together by means of chain links 85. These chain links may be safely replaced, since motor 80 and switch 81 are encl~sed ~- by assembly plate 82 and are therefore inaccessible.
:
,. ~ -.
The l~lvention rclates to an appliance. More particul-arly, the invention rclates to a household appliance for commin-uting substances, especially meat, onions, or the like, that can be cut up. The appliance has a stationary cylindrical receptacle for the substances to be cut up and a shaft which rotates in the receptacle and is equipped with cutter blades. The blades are held in a cutter head which is adapted to move axially upon the shaft, but which is secured against rotation in relation thereto.
An appliance of this kind is described in German Patent 510,862. Such appliances have the advantage that the substance to be comminuted cannot be pressed and rubbed against a base.
Instead, the substance is in a kind of suspended state and is cut cleanly by the cutter blades, as if by a stroke.
This appliance of the prior art has a belt drive and is therefore unsuitable for household use. Furthermore, the mech-anism for adjusting the cutter head is so complex that it is ex-tremely difficult to empty and clean the receptacle which holds the substance to be cut up.
~- Another serious disadvantage of this appliance is that the operator may be injured by the blades while the device is in ` operation, with the result that it is impossible to use this ap-pliance at home.
It is an object of the invention to provide an appli-ance o~ the kind mentioned above, in which the known cutting principles are retained, while ~he cutter head may be manually adjusted by simple means~ The receptacle should be easily detach-able for emptying and cleaning purposes. Moreover, with such an appliance, it should be possible, without any additional measures, to adhere to the safety provisions prescribed for them.
According to the invention, this object may be achieved by passing the shaft centrally through the bottom of a cup-shaped `~
receptacle adapted to contain the substance to be cut up, and , . ~
~05~543 causing it to be driven by an electric drive unit. The recep-tacle is adapted to be closed by means of a cover; a manually operated rammer is axially displaceable through the said cover, but cannot rotate therein, the cutter head rotates around the said rammer, but cannot move axially relative thereto: both the rammer and the cutter head are secured to the said cover so that they cannot be mislaid; the cutter head is maintained in its starting position by means of a return spring. Therefore, the cover, the manually-operated rammer, and the cutter head consti-tute a detachable unit. If this unit is removed from the recep-tacle, all th~t remains therein is the shaft and hhis presents no danger even if the drive is ~nadvertently switched on. The receptacle may ea~ily be separated from the shaft, or it may be removed therewith from the drive unit, so that it may easily be emptied and cleaned.
Thus the invention relate~ to an appliance, for con~
minuting substances, such as meat, onions, or the like, adapted to being cut up, qaid appliance having a stationary cylindrical receptacle for the substances to be cut up, and a shaft rotating ~ 20 in the ~aid receptacle and equipped with cut~er blades, said blade~ being held in a cutter head adapted to move axially upon said ghaft, and mean~ to prevent said cutter head from rotating relative to said shaft, characterized in that the shaft extends centrally through the bottom of a cup-shaped receptacle adapted to hold the substance to be cut up, said appliance also compris-ing an electrical drive unit to drive the shaft, a cover to ` clo~e the receptacle, a manually-operated rammer axially dis-placeable in the cover, and means to prevent rotation of the rammer relative to the shaft, a cutter head adapted to rotate around the rammer, and mean~ to prevent the cutter head from axially moving relative to the rammer; both the rammer and the cutter head being secured to the cover in such ~ ' ~ ' , ' 105;~543 a manner that they cannot be mislaid, and a return spring to hold the cutter head in its starting position~
According to one embodiment of the inventicn, an ade-quate cutting torque may be achieved even with a small electric motor by interposing a reduction gear between the shaft of the motor and the shaft which drives the cutter headO
According to one aspect of the invention, the shaft is mounted to rotate at the bottom of the receptacle, but cannot be displased axially. The shaft is also adapted to be connected to the reduction gear drive shaft by means of a coupling. Thus, the shaft and the receptacle for the substance to be cut up con-stitute a unit which may easily be connected to, and disconnected from, the drive unit. The fact that the receptacle cannot be separated from the shaft has the advantage that, when the said receptacle is filled, the substance to be processed can reach only those areas which are fully covered by the cutter blades dur-ing the cutting operation.
According to another em~odiment, the operative connec- ;~
` tion between the electric motor and the shaft may be ~implified by allowing one end of the shaft to proiect from the receptacle, the projecting end being adapted to be introduced into the hous-ing of the-drive unit, to be journalled therein, and to be driven directly by the reduction gear. In this case, the end of the ^ shaft is preferably in the form of a worm gear engaging with a pinion provided on the motor shaft.
According to still another embodiment, the receptacle may also be removed without th~ shaft, as long as the shaft cannot be removed from the drive-unit housing, and as long as the recep-tacle i`s guided by and is held detachably to the shaft and the ~ ;
housing. In this case, the shaft is a part of the drive unit.
However, the shaft may also be a part of the unit con-sisting of the cover, the manual rammer, and the cutter head, as .
105,3S4~
lon~ as the shaft is detachable from the drive-unit housing, the receptacle is guided by and is held detachably to the shaft and housing, and as long as the said shaft is displaceable through the cutter head, but is secured thereto in such a manner that it cannot be mislaid. This design also makes pro~ision for a coup-ling between the shaft and the drive unit. In this case, the shaft is displaceable throu~h the cutter head, but is secured thereto so that it cannot be mislaid, the coupling end of the shaft projects from the receptacle and is adapted to be connected to a coupling part driven by the drive-unit reduction gear, and the receptacle is guided by and held detachably to the shaft and the housing.
In order to prevent the operator from being hurt, even when the drive unit is switched on, when replacing the cover and connecting the shaft with the outer head or the shaft with the drive unit, the cover is provided with an edge which covers the cutter head when the latter is in its starting position.
The location and guidance of the rammer through the cover is achieved by moulding onto the cover an outwardly-directed guide sleeve comprising a tubular manual ramming means closed off by a handle. For the purpose of securing the cutter head to the rammer, the cutter head has a sleeve-like holder. A portion of this sleeve-like holder is inserted into the open end of the ram-mer where it can rotate, but in which it cannot be displaced axi-ally. In order to enable the shaft to rotate with the axially displaceable cutter head in any position the latter may assume, the shaft is not circular, and is preferably hexagonal, in the ; portion over which the cutter head moves, the cross-section of the cutter head guide being adapted to this portion of the said shaft. The rammer is prevented from rotating inside the guide sleeve of the cover, but may move axially therein, by providing the outside of the said rammer, and the inner wall of the guide 105354~
sleeve, wit~l matching, axially displaceable guide webs and/or ~rooves.
The return spring which ~eeps the cutter head in start-ing position in ~he vicinity of the upper edge of the receptacle may be supported in various ways. According to one particular embodiment, the return spring surrounds the rammer, it bears against the guide sleeve provided in the cover and the handle of the rammer. The return spring may be enclosed by inserting it into the rammer and allowing it to bear against the handle there-of and against the cutter head.
As regards the design of the cutter head, the sleeve-` like carrier thereof has a shoulder which bears against the in-side of the cover, preferably in the vicinity of the guide sleeve moulded thereto, when the cutter head is in starting position, thus restricting any movement of the rammer.
Optimal utilization of the blades secured to the cutter head is achieved by limiting the working stroke of the rammer.
This is made possible by allowing the handle to come ro a stop against the guide sleeve provided in the cover, the working stroke 20 then corresponding to the maximum travel of the cutter head in the receptacle. The cutter head is preferably quite small and simple, thus allowing each blade to move through almost all of whatever substance is placed in the receptacle.
According to one embodiment, the receptacle is held in position, during the cutting operation, by the fact that the out-~- side of the bottom portion of the receptacle, and the drive-unit housing positively engage one another and cannot rotate in res~
pect to each other.
The cutting operation may be observed, and stopped at will, by making at least the receptacle of transparent material, preferably of a clear synthetic material.
The invention will be explained hereinafter in greater 105~354;3 detail in conjunc~iorl wi~h the various em~odimen~s illus~rate~
in the drawin~s attached hereto, wherein:
Fig. 1 shows an appliance in which the shaft is mounted to rotate in the receptacle and i5 connected to an elect,rical drive unit by means of a coupling, Fig. 2 shows an appliance in which the shaft cannot be removed from the drive unit and the receptacle is guided by and held detachably to the shaft and the drive unit, Fig. 3 shows an appliance in which the shaft is secured to the cutter head so that it cannot be mislaid, the shaft being guided in the bottom of the receptacle, and being connected to the drive unit by means of a coupling;
Fig. 4 is a partial view of the appliance, in which the ',~ cutter-blade carrier is easily removable; and Fig. 5 is a side elevational view of an appliance of a different design.
, The appliance which is illustrated in ~ig. 1 has anelectric drive unit which is arranged horizontally, so that the shaft of the motor also runs horizontally. In a slee-ve 12 of a ~'` 20 housing 10 there is a bearing bolt 13 which is provided with a rotatable worm gear 14. This worm gear 14 projects from housing ' 10 and is itself preferably designed as a coupling part 15. A
, conical guide 17 mounted on housing 10 surrounds coupling part 15.
,~ Receptacle 20 is in the form of a cup. Moulded onto the outside at the bottom of the receptacle 20, there is a guide ; cone 21 by means of which the receptacle is guided and held in known fashion in guide 17 over housing 10, during the cutting operation. A bushing 18 which accommodates the bearing portion 22 of shaft 19, which is smooth and has a reduced diameter is ~
inserted into guide cone 21 and allows bearing portion 22 to ro- '-'~ tate but prevents it from moving axially. The end of shaft 19 ~' projecting from guide cone 21 carries a matching coupling part 16 '' ' ' ' '. - - :: ', . ~' ~ -:
105;3543 ~y means of which shaft l9 is connected to driven coupling part 15. Shaft 19 is thus permanently secured to receptacle 20 to form a unit which may be quickly and easily placed upon drive unit ll and subsequently removed therefrom. This is an advantage when the receptacle has -to be filled, cleaned or emptied.
Shaft l9 extends through receptacle 20 which can be closed by means of a cover 24. Receptacle 20 and cover 24 carry matching elements 23, 25 of bayonet fasteners. These enable it to secure cover 24 to receptacle 20, to prevent the cover from being inadvertently removed from the receptacle 20 while the appliance is in operation. The direction in which cover 24 is rotated when closing it should correspond to the direction of rotation of the cutter head. The latter will be described hereinafter in greater detail.
Cover 24 has an edge 26, which covers the cutter head when the latter is in its starting position, and is also provided with a central, outwardly-directed guide sleeve 27. A tubular manual rammer 34 is inserted from the outside into the guide sleeve 27, the upper end of the rammer being closed off by means of a cap 36. This cap 36, with its attachment sleeve 37, is in~
serted into the tubular rammer 34 and is secured thereto. The edge 38 o the cap serves to support return spring 35 which is slipped over rammer 34. The other end of the spring 35 bears ~ -against the upper end of guide sleeve 27 on cover 24.
The lower end of rammer 34 extends as far as the under-surface of cover 24. A sleeve-shaped holder 30, with an attach-ment part 2i3, i8 inserted into this lower end. As indicated by groove 43 and clamping spring 33, holder 30 is arranged to rotate around rammer 34, but it cannot move axially therewith. The lower end-face of rammer 34 bears against shoulder 29 on holder 30, so ` that when rammer 34 is displaced, carrier 30 is positively dis-placed therewith.
lO'j3543 Cutter blacles 31, 32 arc cliametrically secured to hol-der 30 opposite one another. If holder 30 is made oi- a synthetic material, blades 31, 32 may be injec-tion-moulded. The top of shaft 1~ has a chamfer part 41 to facilitate the entry of the cutter head when cover 24 is placed upon receptacle 20. For the same reason, holder 30 has a conical mouth 42 facing receptacle 20. Blades 31, 32 are staggered axially in relation to one ano-ther. Shoulder 29 provided on holder 30 is held to cover 24, preferably in the vicinity of guide sleeve 27. Edge 26 of cover 24 covers at least front blade 31 when the latter is in the start-ing position shown in the drawing. In this position, blade 32 is spaced a small distance away from cover 24.
Within the range of travel of the cutter head, i.e. of the cutter-head holder 30, the surface of shaft 19 is provided with axially-directed guide webs and/or grooves. Holder 30 has a guide which matches the cross-section of shaft 19, and it can therefore move only axially along the shaft. If shaft 19 is in-;~ serted into holder 30 and is then caused to rotate, the cutter head will definitely rotate with the shaft, regardless of its axial position thereon. In the sarne or similar manner, raer 34 is prevented from rotating in guide sleeve 27 in cover 24, but may be adjusted axially. Since attachment part 28 allows the holder 30 to rotate relative to rammer 34, the rammer does not turn when the cutter head is rotated.
Rammer 34 can be displaced axiaLly until cap 36 comes to a stop agairlst the upper end of guide sleeve 27. This working stroke of the rammer corresponds to the distance 40 travelled by the cutter head. Blade 31 then assumes the position shown in dot-ted lines at 31' and is at a small distance from the bottom of receptacle 20. In the vicinity of bushing 18, the bottom of re-ceptacle 20 has a depression 39 into which holder 30 may be intro-duced. If rammer 34 is released, spring 35 returns the rammer and ~0~3543 the cut~er head to ~he starting posi~ion shown in the drawing, in which case the cutter head no lon~er rotates with shaft 19.
If the bayonet fasteners are released, cover 24 can be removed from receptacle 20, while the cutter head is being removed from shaft 19. The design of the cover, cutter head and shaft is preferably such that edge 26 of the cover releases the recep-tacle only when the cutter head moves out engagement with the shaft. This ensures that blade 31 can no longer be driven while being exposed. The danger of any injury is also eliminated even if shaft 19 is rotating when cover 24 is being removed. Converse-ly, when cover 24 is replaced on receptacle 20, the cutter head engages with shaft 19 only when edge 26 of the cover 24 covers receptacle 20 in such a manner that access to the blades is pre-; vented. ~ -... ..
~; The appliance according to Fig. 1 may, of course, also ~ ;
be designed with the shaft of the motor running vertically and shaft 19 running horizontally. Moreover, shaft 19, with coupling ;
part 16, may also be detachably secured in guide cone 21 of re~
ceptacle 20.
~, 20 As regards its use and method of operation, the appli-ance shown in Fig. 2 does not differ from that shown in Fig. 1, ; but the design of the cutter head is different. Blades 31, 32 are connected together by means of rings 44, 45. These rings are slipped onto sleeve-shaped holder 30 and are secured thereto.
Shaft 19 runs sufficiently freely in bushing 18 that the recep-tacle 20 can easily be removed from shaft 19. The end of shaft 19 is introduced into housiny 10 of drive unit 11 and is mounted therein. In this case, bearing pin 13 may be fixed in bearing sleeve 12, and shaft 19 may be mounted rotatably upon the bearing ; 30 pin. The end of shaft 19 itself may be provided with a worm gear 46 engaging with a pinion (not shown) on the shaft of the motor.
- In this case, shaft 19 may be permanently or detachably secured _g _ ,.,,, . ~ : . ::
: ~ - .':- .::' . ' :
105i3543 in housinc~ 10 of drive unit 11. In the latter case, the shaft can be removed from the drive unit. In either case, however, the receptacle 20 may be filled, emptied and cleaned without shaft 19.
As indicated, return spring 35 may also be mounted over shaft 19, so that it bears against both cutter-head carrier 30 and the bot-tom of receptacle 20.
In the appliance according to Fig. 3, shaft 19 is axi-ally displaceable in cu-tter-head holder 30, and is thus secured to the cutter head so that it cannot be mislaid. Before attach-ment part 28 of holder 30 is secured in rammer 34, the shaft must be introduced into holder 30 from a~ove, stopper 48 pre~ent-ing it from falling out. In this case, return spring 35 may easily be accommodated in rammer 34, so that it bears against cap 36 and stopper 48 of shaft 19. The lower end of shaft 19 rotates in bushing 18 and, through stop 47, it bears against the bottom of receptacle 20. The end of shaft 19 projecting away from guide cone 21 is itself in the form of a matching coupling part 49 and may be frictionally connected, in a manner known per se, to driven coupling part 15. Worm gear 14 and coupling part 15 may also be made in one piece.
One characteristic common to all embodiments is that the cutter head can be moved along shaft 19 by means of rammer 34.
Thus the cutter head must be axially displaceable upon shaft 19, it must not rotate about this shaft, on the contrary, it must ro-tate with it. The cutter head is rotatably connected to rammer ;~ 34 but is not axially displaceable relative thereto. Rammer 34 - is axially displaceable through cover 24, however, it cannot ro-tate therein. The cover, rammer and cutter head constitute a unit adapted to be connected to receptacle 20. The latter is in turn guided and held by housing 10 of drive unit 11, from which it may easily be removed. This basic design of the new appliance is quite simple and it meets, without any additional precautions, the l~Ci3543 saety ~ecluirements prescribed Lor such appliances.
As shown ir~ dotted lines in ~ig. 3, edge 50 o~ cover 24 may also be pulled down until it completely covers receptacle 20 placed upon drive unit 11. In this case, at least one e~tension on edge 50 of the cover may be in-troduced, through an opening 51, into housing 10 of drive unit 11. This extension is used to adjust the actuating element 53 of at least one safety switch 52.
The appliance can be switched on only when cover 24 is correctly in position and safety switch 52 is actuated. Edge 50 of the cover provides additional protection since, even if recep-tacle 20 is destroyed, blades 31, 32 are still completely covered and are therefore not accessible.
Fig. 4 shows an embodiment of the cover-rammer unit, in which the cutter head may be easily and safely removed. Rammer 34 is closed off by cap 36, edge 38 thereof being secured to i sleeve 73 of rammer 34 by means of a snap or bayonet fastener 72.In this case, return spring 35 does not bear against the cutter ., ~
~ head, but against bottom 63 of a guide cup 62 which is axially .
displaceable in rammer 34. A transverse pin 64 extends through cup 62, the ends of said pin running in internal grooves 65, 66 provided in guide sleeve 27 of cover 24. The travel distance of rammer 34 is restricted by diametrically opposite slots 60, 61 in which transverse pin 64 is guided. Bottom 63 of guide cup 62 béars against the end of shaft 19, which is preferably hexagonal, preferably through the projecting spherical end of metal insert 67.
If the cover 24 is removed from receptacle 20, return spring 35 forces transverse pin 64 against the lower ends of slots 60 and 61. ~owever, cover 24 may still be moved farther up, since internal grooves 65, 66 in guide sleeve 27 permit this. In this way, the cutter head, which is secured to the end of rammer 34, is released and may easily be replaced and cleaned. For this pur-pose, the other end of rammer 34 runs in a semicircular recess , ~ ' 10Cj3543 68 which has an outer groove and forrns an inner web which fits between end shoulders 29 and 71 of cutter-head holder 30. This makes it possible to introduce the cutter head radially into the recess 68, and it is then secured by a similarly shaped closure paLt which becomes flush with the outside of the rammer and car-ries a closing yoke 70 wnich is hinged to pin 69 on the said closure part. Yoke 70 is pivoted and locked, in the direction of rotation of the cutter head, into the outer groove provided in recess 68. This allows the cutter head to be removed from ram-mer 34 without overcoming the force of the spring. Moreover,after the cutter head has been removed, cover 24 may be removed from rammer 34. The rammer-cover unit is thus easily removed and reinstalled.
Cover 24 has at its edge a switch projection 74 which, - in the appliance according to Fig. 5, may be screwed, through a slot 75, into the interior of housing 10 of the drive unit. Cover 24 is then held in housing 10 in the axial directiGn of shaft 19 and may actuate an electric switch, e.g. a micro-switch. This makes it impossible to switch on the appliance until receptacle 20 and cover 24 are in place, which is an optimal way of complying -with the safety regulations. The bottom of receptacle 20 has an extension 77 which is positively introduced into a recess 78 - formed in step 79 of housing 10. This makes it impossible for receptacle 20 to rotate upon shaft 19.
Moulded onto cover 24 is an additional stop which limits the rotary motion of the cover, when the appliance is switched off, by bringing it to a stop against housing 10. Switch 81 pre-ferably releases automatically, so that when rammer 34 is released the cover 24 and the rammer 34 are returned and the appliance is switched off. The switch return spring is so strong that switch extension 74 on cover 24 is screwed out of slot 75 in housing 10 and may then be removed.
lOt~3543 Bottom trough 76 o housing 10 covers a separate trans-mission compartment, in wllich interrnedi.ate years 83, 84 are coup-pled together by means of chain links 85. These chain links may be safely replaced, since motor 80 and switch 81 are encl~sed ~- by assembly plate 82 and are therefore inaccessible.
:
,. ~ -.
Claims (44)
1. An appliance for comminuting substances, such as meat, or the like, adapted to being cut up, said appliance having a stationary cylindrical receptacle for the substances to be cut up, and a shaft rotating in the said receptacle and equipped with cutter blades, said blades being held in a cutter head adapted to move axially upon said shaft, and means to prevent said cutter head from rotating relative to said shaft, characterized in that the shaft extends centrally through the bottom of a cup-shaped receptacle adapted to hold the substance to be cut up, said appliance also comprising an electrical drive unit to drive said shaft; a cover to close said receptacle; a manually-operated rammer axially displace-able in the said cover, and means to prevent rotation of said rammer relative to said shaft, a cutter head adapted to rotate around said rammer, and means to prevent said cutter head from axially moving relative to said rammer; both said rammer and said cutter head being secured to said cover in such a manner that they cannot be mislaid; and a return spring to hold said cutter head in its starting position.
2. An appliance according to claim 1, which comprises an electric motor, a motor shaft operated by said electric motor, said shaft being adapted to be driven by said motor shaft through a reduction gear.
3. An appliance according to claim 2, wherein the shaft is mounted to rotate at the bottom of the receptacle and is prevented from moving axially therein, said shaft being connected to a drive shaft of the reduction gear by means of a coupling.
4. An appliance according to claim 3, wherein one end of the shaft projects from the receptacle, said end being adapted to be introduced into a housing of a drive unit and is adapted to be mounted therein and to be driven directly by the reduction gear.
5. An appliance according to claim 4, wherein the shaft is secured permanently in the housing of the drive unit and the receptacle is guided by and held detachably to the said shaft and housing.
6. An appliance according to claim 4, wherein the shaft is held detachably in the housing of the drive unit; the receptacle is guided by and held detachably to the said shaft and housing; and the what is displaceable in the cutter head but is secured thereto so that it cannot be mislaid.
7. An appliance according to claim 2, wherein the shaft is displaceable in the cutter head but is secured thereto so that it cannot be mislaid; the coupling end of the shaft projects from the receptacle and is adapted to be connected to a coupling part driven by the reduction gear of the drive unit;
and in that the receptacle is guided by and held detachably to the said shaft and housing.
and in that the receptacle is guided by and held detachably to the said shaft and housing.
8. An appliance according to claim 1, which comprises a cover having an edge which covers the cutter head when the latter is in its starting position.
9. An appliance according to claim 8, which comprises an outwardly-directed guide sleeve moulded onto the cover, the said guide sleeve accommodating a tubular, manually operated rammer closed off by a cap.
10. An appliance according to claim 9, wherein the cutter head has a sleeve-shaped holder, one part of which is intro-duced into the open end of the rammer and rotates therein, but is prevented from moving axially.
11. An appliance according to claim 10, wherein the exterior of the rammer and in the inner wall of the guide sleeve in the cover, are provided with matching, axial, guide webs and grooves.
12. An appliance according to claim 11, wherein the return spring which is slipped over the rammer, bears against the guide sleeve provided in the cover and against the cap of said rammer.
13. An appliance according to claim 11, wherein the return spring, arranged within the rammer, bears against the cap of the rammer and against the cutter head.
14. An appliance according to claim 9, wherein a shoulder provided on the sleeve-shaped cutter-head holder bears against the inside of the cover, when the said cutter head is in its starting position, in the vicinity of the guide sleeve moulded thereto, thus restricting the movement of the rammer.
15. An appliance according to claim 9, wherein the working stroke of the rammer is limited by the cap coming up against the guide sleeve, provided in the cover, and this working stroke corresponds to the maximal travel of the cutter head in the receptacle.
16. An appliance according to claims 1, 2 or 3, wherein at least the receptacle is made of a transparent, synthetic material.
17. An appliance according to claim 5, which comprises means to hold positively together, the outside of the bottom part of the receptacle, and the housing of the drive unit and to prevent rotation thereof in relation to each other.
18. An appliance according to claim 9, wherein the rammer comprises a guide cup, against which the return spring bears;
said guide cup being secured against rotation, but allowed to move axially, by means of a guide pin running in internal axial grooves formed in the guide sleeve of the cover; and the shaft bears, through a metal insert having a spherical end, against the bottom of the guide cup, the cutter-head holder being secured to the rammer by a shoulder, to prevent the cover and the blade of the cutter head to be mislaid.
said guide cup being secured against rotation, but allowed to move axially, by means of a guide pin running in internal axial grooves formed in the guide sleeve of the cover; and the shaft bears, through a metal insert having a spherical end, against the bottom of the guide cup, the cutter-head holder being secured to the rammer by a shoulder, to prevent the cover and the blade of the cutter head to be mislaid.
19. An appliance according to claim 18, wherein the cutter head holder is in the form of a sleeve having two end-shoulders in one of which the blades are secured, the rammer runs out towards the cutter head into a U-shaped sema-circular guide having an external groove; the cutter head is adapted to be inserted radially into this U-shaped guide and is retained therein by a complementary U-shaped closure part, a closing yoke securing said closure part to the rammer.
20. An appliance according to claim 19, wherein the closing yoke is rotatably connected to the closure part and is adapted to be locked, in the direction of rotation of the cutter head, into the external groove formed in the semicircular guide of the rammer.
21. An appliance according to claim 4, wherein the receptacle is mounted on a step on the housing of the drive unit, and in the edge of the cover has a switch projection which is adapted to be introduced, through a slot into the interior of the housing, where it actuates a switch, with an automatic release, by means of which the appliance may be switched on.
22. An appliance according to claim 21, wherein the direction of rotation of the cutter head is opposite to the direction of rotation of the cover and the switch projection and in said cover is provided with a stop which limits the rotary motion of the said cover when the appliance is being switched off.
23. An appliance for comminuting foods comprising a cup-like container, a base supporting said container, drive means located in said base having a rotatable shaft the upper end of which extends into said container, a removable cover for said container, said cover having an integral sleeve extending upwardly therefrom, an elongated plunger located in said sleeve and having an inner end facing said container, said sleeve and said plunger having cooperative keying means permitting said plunger to move relatively axially but non-rotationally within said sleeve, cutting means comprising a head secured to the inner end of said plunger to be rotationally but not axially movable relative thereto, said heat having at least one knife extending radially therefrom, and a central opening in said knife head adapted to fit over the upper end of said shaft, said central opening and said shaft being cooperatively connected by keying means permitting relative axial movement and conjoint rotational movement of said cutting means with said shaft upon movement of said plunger a selected distance through said sleeve into said container, and spring means for normally biasing said plunger in an outward direction of said container by at least said selected distance, said cover, said plunger and said knife head being connected so that upon removal of said cover from said container said knife head is disengaged from said shaft and together with said plunger and cover is removed from said container.
24. The apparatus according to claim 23, wherein the shaft is driven through a gear transmission of an electric motor.
25. The apparatus according to claim 24, wherein the lower end of the shaft is rotatably mounted in the bottom container and is held axially fixed, and is connectable by means of a coupling with the transmission.
26. The apparatus according to claim 24, wherein the lower end of the shaft protrudes through the container into the base and is driven directly through the transmission.
27. The apparatus according to claim 26, wherein the lower end of the shaft is fixedly journalled in the base, and the container is removably held on the shaft and the base.
28. The apparatus according to claim 26, wherein the lower end of the shaft is detachably journalled in the base, and the container is removably held on the shaft and on the base, the upper end of the shaft being held in the knife-head.
29. The apparatus according to claim 27, characterized in that the upper end of the shaft is held in the knife-head, and the lower end of the shaft protrudes into said base and is provided with a first coupling connectable with a second coupling part drive by the step-down gear train.
30. The apparatus according to claim 23, wherein the cover has a depending edge which covers the knife-head when in the normally biased position.
31. The apparatus according to claim 23, wherein the plunger is tubular and is closed by a handle piece at its outer end.
32. The apparatus according to claim 31, wherein the knife-head is tubular and has a stepped down portion intro-duced into the open end of the plunger and is rotatably but axially fixed therein.
33. The apparatus according to claim 23, wherein the keying means on the plunger and the sleeve of the cover comprise axially extending guide fins and grooves.
34. The apparatus according to claim 31, wherein the spring means comprises a compression spring slipped over the plunger taking support against the sleeve of the cover and against the handle of the plunger.
35. The apparatus according to claim 23, wherein the spring means comprises a compression spring arranged in the plunger taking support against the handle piece of the plunger and against the knife-head.
36. The apparatus according to claim 32, wherein the knife-head is provided with a collar bearing in the starting position against the inside of the cover limiting the dis-placement of the plunger.
37. The apparatus according to claim 36, wherein the movement of the plunger is limited by abutment of the handle piece against the sleeve of the cover, this movement corresponding to the maximum displacement path of the knife-head in the container.
38. The apparatus according to claim 37, wherein at least the container is made of transparent material.
39. The apparatus according to claim 38, wherein the outside bottom of the container and the base are provided with interengaging form-lockingly and non-rotationally seating means.
40. The apparatus according to claim 35, including the guide pot with said plunger on which the spring bears said guide pot being guided by means of a guide line extending radially through said guide pot into a pair of diametrically opposed axial internal grooves formed in the sleeve of the cover, said shaft having an installed metal insert, terminating spherically at the end face, engaging the bottom of the guide pot, said knife-head being held by a collar to the cover.
41. The apparatus according to claim 40, wherein the knife-head is a sleeve having two frontal collars, the knives being fixed in one collar, said plunger terminating facing the knife-head, in a U-shaped semicircular guide with outer groove, said knife-head being radially insertable in the U-shaped guide and is held therein with a complementary U-shaped semicircular closure piece and a closure yoke securing the closure piece on the plunger.
42. The apparatus according to claim 41, wherein the closure yoke is rotatably connected with the closure piece and is snapped into the outer groove of the semicircular guide of the plunger in the direction of rotation of the knife-head.
43. The apparatus according to claim 42, wherein the container is arranged on a shoulder of the base, and that the cover has a switching lug on its edge which is introduced through a slot into the interior of the housing and there actuates a self-triggering switch which controls the drive means.
44. The apparatus according to claim 43, wherein the direction of rotation of the knife-head is contrary to the switching-on direction of the cover with the switching lug, and that the cover is provided with a stop which limits the rotational movement of the cover in switching-off direction.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE2614018A DE2614018C3 (en) | 1976-04-01 | 1976-04-01 | Household appliance for chopping food, especially meat, onions or the like |
| DE19772710300 DE2710300C2 (en) | 1977-03-09 | 1977-03-09 | Household appliance for chopping food, especially meat, onions or the like. |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1053543A true CA1053543A (en) | 1979-05-01 |
Family
ID=25770289
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA274,704A Expired CA1053543A (en) | 1976-04-01 | 1977-03-24 | Appliance, especially a household appliance for comminuting substances, such as meat, onions, or the like, that can be cut up |
Country Status (13)
| Country | Link |
|---|---|
| JP (1) | JPS6038181B2 (en) |
| AT (1) | AT347626B (en) |
| AU (1) | AU502552B2 (en) |
| CA (1) | CA1053543A (en) |
| DK (1) | DK146646C (en) |
| ES (1) | ES457404A1 (en) |
| FR (1) | FR2345974A1 (en) |
| GB (1) | GB1576490A (en) |
| IT (1) | IT1081971B (en) |
| NL (1) | NL7703601A (en) |
| NO (1) | NO143987C (en) |
| NZ (1) | NZ183741A (en) |
| SE (1) | SE433903B (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4216917A (en) * | 1978-11-13 | 1980-08-12 | Cuisinarts, Inc. | Safety interlock for the food pusher in a food processor |
| DE2850725C2 (en) * | 1978-11-23 | 1987-03-12 | Robert Krups Stiftung & Co KG, 5650 Solingen | Shredder |
| US4226373A (en) * | 1979-03-05 | 1980-10-07 | Wilson Research & Development, Inc. | Feed tube protector for a food processor |
| NL8901888A (en) * | 1989-07-21 | 1991-02-18 | Philips Nv | BEARING DRIVE SHAFT KITCHEN MACHINE. |
| DE19617139A1 (en) * | 1996-04-29 | 1997-11-06 | Braun Ag | Carrier for a drive system of an electrically powered household appliance |
| US11871873B1 (en) | 2022-08-25 | 2024-01-16 | Ronald Smith | Manual food shredding device and method of use |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH99761A (en) * | 1922-03-29 | 1923-06-16 | Schaad Irene | Meat cutting machine. |
| FR989849A (en) * | 1948-07-02 | 1951-09-13 | Device for mixing or reducing into small pieces all food products | |
| GB786473A (en) * | 1956-02-01 | 1957-11-20 | Siegfried Stephan | Improvements in or relating to meat cutters |
| DE1119145B (en) * | 1958-07-10 | 1961-12-07 | Rene Dupont | Machine for chopping, mixing and stirring food, especially meat |
| FR1444849A (en) * | 1965-05-25 | 1966-07-08 | Moulinex Sa | Household chopper |
| FR2129193A6 (en) * | 1971-03-18 | 1972-10-27 | Verdun Pierre |
-
1977
- 1977-03-17 NO NO77770951A patent/NO143987C/en unknown
- 1977-03-23 DK DK127677A patent/DK146646C/en not_active IP Right Cessation
- 1977-03-24 CA CA274,704A patent/CA1053543A/en not_active Expired
- 1977-03-25 AT AT209377A patent/AT347626B/en not_active IP Right Cessation
- 1977-03-28 SE SE7703492A patent/SE433903B/en unknown
- 1977-03-29 AU AU23705/77A patent/AU502552B2/en not_active Expired
- 1977-03-29 IT IT04820/77A patent/IT1081971B/en active
- 1977-03-30 NZ NZ183741A patent/NZ183741A/en unknown
- 1977-03-30 GB GB13284/77A patent/GB1576490A/en not_active Expired
- 1977-03-30 FR FR7709592A patent/FR2345974A1/en active Granted
- 1977-03-31 ES ES457404A patent/ES457404A1/en not_active Expired
- 1977-04-01 NL NL7703601A patent/NL7703601A/en not_active Application Discontinuation
- 1977-04-01 JP JP52037455A patent/JPS6038181B2/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| NO143987B (en) | 1981-02-16 |
| AT347626B (en) | 1979-01-10 |
| ATA209377A (en) | 1978-05-15 |
| SE433903B (en) | 1984-06-25 |
| NO143987C (en) | 1981-05-27 |
| IT1081971B (en) | 1985-05-21 |
| AU2370577A (en) | 1978-10-05 |
| SE7703492L (en) | 1977-10-02 |
| DK127677A (en) | 1977-10-02 |
| FR2345974A1 (en) | 1977-10-28 |
| NL7703601A (en) | 1977-10-04 |
| AU502552B2 (en) | 1979-08-02 |
| NZ183741A (en) | 1979-03-28 |
| JPS6038181B2 (en) | 1985-08-30 |
| FR2345974B1 (en) | 1982-11-19 |
| DK146646B (en) | 1983-11-28 |
| DK146646C (en) | 1984-05-07 |
| JPS52128271A (en) | 1977-10-27 |
| GB1576490A (en) | 1980-10-08 |
| NO770951L (en) | 1977-10-04 |
| ES457404A1 (en) | 1978-02-16 |
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