GB2185386A - A food processor - Google Patents

A food processor Download PDF

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Publication number
GB2185386A
GB2185386A GB08630124A GB8630124A GB2185386A GB 2185386 A GB2185386 A GB 2185386A GB 08630124 A GB08630124 A GB 08630124A GB 8630124 A GB8630124 A GB 8630124A GB 2185386 A GB2185386 A GB 2185386A
Authority
GB
United Kingdom
Prior art keywords
shaft
attachment
food processor
bowl
food
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.)
Granted
Application number
GB08630124A
Other versions
GB2185386B (en
GB8630124D0 (en
Inventor
Scott Melvyn Baker
Terence Gordon Royle
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Thorn EMI Appliances Ltd
Original Assignee
Thorn EMI Appliances Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Thorn EMI Appliances Ltd filed Critical Thorn EMI Appliances Ltd
Publication of GB8630124D0 publication Critical patent/GB8630124D0/en
Publication of GB2185386A publication Critical patent/GB2185386A/en
Application granted granted Critical
Publication of GB2185386B publication Critical patent/GB2185386B/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D1/00—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor
    • B26D1/01—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work
    • B26D1/12—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis
    • B26D1/25—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis with a non-circular cutting member
    • B26D1/26—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis with a non-circular cutting member moving about an axis substantially perpendicular to the line of cut
    • B26D1/28—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis with a non-circular cutting member moving about an axis substantially perpendicular to the line of cut and rotating continuously in one direction during cutting
    • B26D1/29—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis with a non-circular cutting member moving about an axis substantially perpendicular to the line of cut and rotating continuously in one direction during cutting with cutting member mounted in the plane of a rotating disc, e.g. for slicing beans
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D3/00—Cutting work characterised by the nature of the cut made; Apparatus therefor
    • B26D3/18—Cutting work characterised by the nature of the cut made; Apparatus therefor to obtain cubes or the like
    • B26D3/22—Cutting work characterised by the nature of the cut made; Apparatus therefor to obtain cubes or the like using rotating knives

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Food Science & Technology (AREA)
  • Food-Manufacturing Devices (AREA)

Abstract

A food processor is provided with a bowl 8, which has a central conical portion 13 housing a motor- driven, rotary drive shaft 4. The drive shaft 4 imparts rotation to an attachment 14 for processing food introduced into the bowl 8 through a feed-tube 11. The attachment 14 includes a hollow hub 17, the inner surface of which is fluted (Figs. 2, 3, 5, 6) to provide grooves which interengage with longitudinal grooves formed on the upper region of the shaft 4, thereby inhibiting rotational movement of the attachment 14 relative to the shaft 4. The height of the attachment 14 on the shaft 4 is dependent upon the depth of 8 depression 16 formed in the central portion of the attachment. <IMAGE>

Description

SPECIFICATION A food processor This invention relates to a food processor.
A conventional food processor includes a motor-driven rotary output located centrally in a support for a bowl, within which food to be processed is retained. The base of the bowl is formed with a central conical portion, which is located over the rotary output when the bowl is positioned on the support, and a drive shaft, attached to a food processing attachment, such as a cutter blade, is inserted down the conical portion and into the output.
However, such attachments, each being fixedly mounted on a substantially long drive shaft, are generally cumbersome to store, when not in use, particularly if there are a substantial number of such attachments, each for implementing a different processing operation.
Furthermore, some food processors are advantageously provided with braking means for stopping rotation of the attachment as quickly as possible, when the processing is complete.
This is usually implemented by reversing the rotational drive to overcome the inertia of the rotating attachment. It is, however, necessary in such processors to ensure that the shaft does not become separated from the output upon reversal of the output drive, which tends to cause the rotating attachment to be released.
It is therefore an object of the present invention to provide an improved food processor, which alleviates the above-mentioned problems associated with food processors known hitherto.
In accordance with the present invention there is provided a food processor including a rotary motor-driven shaft for imparting rotational drive to an attachment for processing food, said attachment being provided with a hollow hub portion to be removably located over the top of said shaft, the inner surface of said hub portion and the upper region of said shaft each being fluted to form a number of interengaging longitudinal grooves co-operable, when said hub is inserted over said shaft, to inhibit rotational movement of said attachment relative to said shaft.
The invention will now be described by way of example only with reference to the accompanying drawings, wherein: Figure 1 shows a sectional view of a food processor, in accordance with the present invention, Figure 2 shows an enlarged plan view of a cutter disc shown in Fig. 1, Figure 3 shows an underside view of the cutter disc shown in Fig. 2, Figure 4 shows a sectional view through X-X in Fig. 2, Figure 5 shows an enlarged side view of the upper part of a drive shaft shown in Fig. 1, and Figure 6 shows a plan view of the shaft shown in Fig. 5.
In Fig. 1, a food processor includes a base 1 supporting a housing 2 accommodating a motor 3, which drives a rotary drive shaft 4 via a belt 5 and a suitable gearing arrangement 6. The shaft 4 is positioned centrally on a support pedestal 7, which provides support for a bowl 8 for containing food to be processed.
The bowl 8 has a side handle 9 and is provided with a locking lid 10 with a feedtube 11 formed therein. Base 12 of the bowl 8 is formed with a central conical portion 13, through which the shaft 4 extends when the bowl 8 is positioned on the support 7.
One or more attachments, such as a cutter disc, shown generally at 14, are secured to the top of the shaft 4 to be rotatably driven by the shaft to process food, either being fed into the bowl 8 via the feed tube 11 or already contained within the bowl.
The cutter disc 14 basically consists of a metal plate 15, formed with a centrally positioned depression 16 having a central aperture through which a metal hollow hub 17 is located. The hub 17 is located over the top of the drive shaft 4 to correctly position the cutting plate 1 5 and to enable rotational drive to be imparted to the plate.
The cutter disc 14 is shown in more detail in Figs. 2 to 5, wherein like parts are labelled with like reference numerls with respect to Fig. 1.
The hub 17 is formed with a flange 18 which is located under the depression of the plate 15, so that the upper end 19 of the hub 1 7 passes through the aperture in the depression 16. The hub 17 is then secured to the plate 1 5 by screws or rivets 20 through the flange 18 and plate depression 1 6. The plate 15 is also provided with a number of channelled depressions 21, which strengthen the thin metal plate 15 and a number of cutting edges or apertures, such as at 22, to provide shredding, grating, slicing, etc., of food pushed down the tube 11, before it passes into the bowl 8. The plate 15 is further formed with a depending skirt 33 around the periphery thereof.
The upper region of the shaft 4 is shown in detail in Figs. 5 and 6, wherein it can be seen that region 23 of the shaft 4 is fluted so as to form three longitudinal grooves 24, 25, 26.
This fluted region of the shaft 4 is arranged to interengage with the inner surface of the hollow hub 17, which is similarly fluted to provide inverted grooves 27, 28, 29, which, when correctly fitted over the top of the shaft 4, co-operate with the grooves 24, 25, 26 of the shaft.
The present invention thus provides a simple construction for removably securing the at tachment, for example the cutter disc, to the top of a drive shaft, so as to inhibit rotational movement of the attachment relative to the shaft. It can thus be envisaged that, when the rotary drive to the attachment is suddenly reversed to provide a brake for the rotating attachement, the attachment is inhibited from releasing itself from the top of the shaft 4.
Furthermore, the shaft 4 is intended to be permanently fixed into the output of the gearing arrangement 6, and the respective attachments for implementing different processing operations can be removably attached to the top thereof. The attachments to be stored, when not in use, are therefore only provided with a relatively short hub, rather than a substantially longer drive shaft, thereby alleviating the problem encountered with storage of known food processor attachments.
The present attachments are further advantageous in that the vertical distance, shown as h in Fig. 1, between the cutting plate 15 and the opening of the feed-tube 11 may be easily adjusted, during manufacture of each attachment, to suit the particular function of the attachment. This is implemented by simply adjusting the depth of the depression 16 of the plate 15, which sets the height of the plate 15, for each attachment.
The upper region 23 of the shaft 4 may be fluted to provide any suitable number of grooves and the inner surface of the hub 17 should be correspondingly fluted.
The hub 17 may also be adapted to support any type of food processing attachment required to be driven by the shaft 4.
A further feature of the present food processor is the shaping of the base 12 of the bowl 8, as shown in Fig. 1. The base 12 is shaped so as to provide a substantially flat base part 30 and side base parts 31, 32, joining the side wall and conical part 13 of the bowl, each part 31, 32 having a relativeiy large radius of curvature.
This shaping of the base 12 of the bowl enables food to be easily scraped from the bowl after processing and also enables the bowl to be easily cleaned.
If an attachment, such as cutter blades, positioned adjacent the base of the bowl is used, it may be advantageous to curve the blades slightly so as to follow the shaping of the bowl base.

Claims (5)

1. A food processor including a rotary motor-driven shaft for imparting rotational drive to an attachment for processing food, said attachment being provided with a hollow hub portion to be removably located over the top of said shaft, the inner surface of said hub portion and the upper region of said shaft each being fluted to form a number of interengaging longitudinal grooves co-operable, when said hub is inserted over said shaft, to inhibit rotational movement of said attachment relative to said shaft.
2. A food processor as claimed in claim 1 wherein said attachment is formed with a centrally positioned depression having an aperture, through which said hub is located, such that the height of said attchment on said shaft can be varied by adjusting the depth of said depression.
3. A food processor as claimed in claim 1 or 2 wherein the attachment is a cutter disc formed with a number of cutting edges or apertures to provide shredding, grating or slicing of food pushed against said disc.
4. A food processor as claimed in any preceding claim and including a removable bowl having an upwardly-extending conical portion formed centrally in the base thereof to accommodate the drive shaft, said base being curved at its periphery to join the side wall of said bowl and at its central region to join said conical portion and substantially flat between said periphery and said central region.
5. A food processor substantially as herein described with reference to the accompanying drawings.
GB8630124A 1986-01-16 1986-12-17 A food processor Expired GB2185386B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB868600973A GB8600973D0 (en) 1986-01-16 1986-01-16 Food processor

Publications (3)

Publication Number Publication Date
GB8630124D0 GB8630124D0 (en) 1987-01-28
GB2185386A true GB2185386A (en) 1987-07-22
GB2185386B GB2185386B (en) 1989-10-25

Family

ID=10591453

Family Applications (2)

Application Number Title Priority Date Filing Date
GB868600973A Pending GB8600973D0 (en) 1986-01-16 1986-01-16 Food processor
GB8630124A Expired GB2185386B (en) 1986-01-16 1986-12-17 A food processor

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GB868600973A Pending GB8600973D0 (en) 1986-01-16 1986-01-16 Food processor

Country Status (1)

Country Link
GB (2) GB8600973D0 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2287176A (en) * 1994-02-09 1995-09-13 Philips Electronics Nv Kitchen machine drive mechanism.

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1461749A (en) * 1974-10-01 1977-01-19 Moulinex Sa Electrically driven mincing machines
GB2013480A (en) * 1978-02-02 1979-08-15 Wilson Research & Dev Julienne cutter tool and method of making
GB2094136A (en) * 1981-02-27 1982-09-15 Cuisinarts Inc French fry cutter for food processors
EP0116017A1 (en) * 1983-01-12 1984-08-15 S.p.A. - Macchine Alimentari SI.MA.C Electric household appliance for cutting fruit, vegetables and similar food products into small sticks or chunks of variable thickness
GB2153659A (en) * 1984-02-07 1985-08-29 Bosch Siemens Hausgeraete Food processor

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1461749A (en) * 1974-10-01 1977-01-19 Moulinex Sa Electrically driven mincing machines
GB2013480A (en) * 1978-02-02 1979-08-15 Wilson Research & Dev Julienne cutter tool and method of making
GB2094136A (en) * 1981-02-27 1982-09-15 Cuisinarts Inc French fry cutter for food processors
EP0116017A1 (en) * 1983-01-12 1984-08-15 S.p.A. - Macchine Alimentari SI.MA.C Electric household appliance for cutting fruit, vegetables and similar food products into small sticks or chunks of variable thickness
GB2153659A (en) * 1984-02-07 1985-08-29 Bosch Siemens Hausgeraete Food processor

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2287176A (en) * 1994-02-09 1995-09-13 Philips Electronics Nv Kitchen machine drive mechanism.

Also Published As

Publication number Publication date
GB2185386B (en) 1989-10-25
GB8600973D0 (en) 1986-02-19
GB8630124D0 (en) 1987-01-28

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Legal Events

Date Code Title Description
732 Registration of transactions, instruments or events in the register (sect. 32/1977)
PCNP Patent ceased through non-payment of renewal fee