GB1596230A - Automatic machine for coffee - Google Patents

Automatic machine for coffee Download PDF

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Publication number
GB1596230A
GB1596230A GB1563278A GB1563278A GB1596230A GB 1596230 A GB1596230 A GB 1596230A GB 1563278 A GB1563278 A GB 1563278A GB 1563278 A GB1563278 A GB 1563278A GB 1596230 A GB1596230 A GB 1596230A
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United Kingdom
Prior art keywords
piston
plates
support plates
coffee
vertical
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Expired
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GB1563278A
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ADM Srl
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ADM Srl
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Publication date
Application filed by ADM Srl filed Critical ADM Srl
Publication of GB1596230A publication Critical patent/GB1596230A/en
Expired legal-status Critical Current

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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
    • A47J31/00—Apparatus for making beverages
    • A47J31/24—Coffee-making apparatus in which hot water is passed through the filter under pressure, i.e. in which the coffee grounds are extracted under pressure
    • A47J31/34—Coffee-making apparatus in which hot water is passed through the filter under pressure, i.e. in which the coffee grounds are extracted under pressure with hot water under liquid pressure
    • A47J31/36—Coffee-making apparatus in which hot water is passed through the filter under pressure, i.e. in which the coffee grounds are extracted under pressure with hot water under liquid pressure with mechanical pressure-producing means
    • A47J31/3604—Coffee-making apparatus in which hot water is passed through the filter under pressure, i.e. in which the coffee grounds are extracted under pressure with hot water under liquid pressure with mechanical pressure-producing means with a mechanism arranged to move the brewing chamber between loading, infusing and ejecting stations
    • A47J31/3609—Loose coffee being employed

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Food Science & Technology (AREA)
  • Apparatus For Making Beverages (AREA)

Description

(54) AUTOMATIC MACHINE FOR COFFEE (71) We A.D.M. S.r.l., a body corporate organised under the laws of Italy, of Via B-uno Buozzi, 55, S. Donato- milanese, Milano, Italy, do hereby declare the invention for which we pray that a patent may be granted to us, and the method by which it is to be performed, to be particularly described in and by the following statement:- The present invention relates to a machine for automatically producing coffee. More specifically the present invention relates to a machine for producing coffee suitable for use in an automatic coffee distributor.
As it is known automatic coffee distributors incorporate a machine for preparing the beverage itself.
In currently available automatic coffee distributors these machines are actuated by means of cam members or hydraulic circuits.
Moreover in order to operate these machines two or more motors are normally required which are of a rather intricate structure due to the particular movements of the component parts.
Such automatic machines for producing coffee are often of poor reliability, require frequent maintenance operations and often are not completely automatic.
Therefore it is an object of the present invention to provide a machine for producing coffee which is structurally simple, easily operable and completely automatic.
According to the invention there is provided an automatic coffee making machine comprising a base; two support plates extending parallel to each other and vertically mounted on said base, each said plate being provided, from the top to the bottom thereof, with a first vertical guide, a second guide formed with a vertical portion and an inclined portion forming therebetween them an obtuse angle, a third horizontal guide and a fourth vertical guide; two further plates resiliently and movably fixed respectively on each outer wall of said support plates, and each provided with an upper vertical slot, corresponding to the first guide of the support plates, with a lower vertical slot, corresponding to the fourth guide of the plates, and with an intermediate cut-away portion; a block to which a cylinder is fixed for housing a filter into which the coffee is introduced, provided with an axial recess in which an ejector slides, said ejector being anchored to a horizontal plate provided with side pins passing through the fourth guides of the support plates and engaging with the lower ends of the lower vertical slots in said, further plates; a piston rod having one end thereof eccentrically pivoted to two toothed wheels rotatable on a pin fixed to the two support plates, the other end being articulated to a piston movable between said support plates; two bell-crank members each slidable along the third horizontal guide of the support plates and provided with two slots corresponding respectively to the first guide and the vertical portion of the second guide of the support plates, said bellcrank members carrying a frame to which is attached a spout for introducing the coffee into the cylinder; two longitudinally spaced parallel horizontal rods passing through said piston, one of which slides at its ends along the upper slots of the bell-crank members and the first vertical guides of the support plates, the other rod sliding along the lower slots of the bell-crank members and the second guides of the support plates; said piston being provided with a pin offset from the central axis of said piston and having a base capable of sealing the cylinder; a cantilevered plate fixed to the walls of the vertical support plates and engaged by the pin of the piston during the rising stroke of the latter; two spigots fixed at the end of the lower rod of the piston, said spigots sliding in the lower slots of the bell-crank members and in the second guides of the support plates and projecting from the further plates at the cut-away portions; a microswitch controlling the water supply, actuated by one end of the upper rod of the piston in the lowered position thereof, and a microswitch for supplying the current to the machine, actuated by one of the spigots when the piston is at or near its top dead centre position.
The operation of the described machine is the following: by pushing downwardly the piston through a half revolution of the toothed wheels, the base of said piston inserts into the coffee cylinder, thereby sealingly closing said cylinder by means of a suitable gasket ring.
The end of one of the two horizontal axes articulated to the piston, as the piston is at its lower end of stroke, projecting from the plate, presses on a lever member which acts on the gate of a valve thereby allowing an inflow of hot water to the sealed coffee filter.
Simultaneously, said lever member acts on a microswitch which switches or deviates the electric supply from the motor driving the shaft carrying the aforesaid gears, to a pump for metering the hot water.
Then the pump is locked and the motor again supplied thereby rising said piston.
This latter, by rising, moves upwardly, by means of suitable spigots, two shaped plates resiliently and movably fixed to the outer walls of the vertical plates.
At the bottom of said plates a horizontal plate engages being provided with a vertical pin sliding in the hollow of said hollow block and acting as an ejector for the tablet of exhausted coffee.
As the piston rises again said spigots, sliding in the slanted portion of the lower slots of the vertical plates cause the piston to tilt, thereby said piston is removed from the filter axis.
Moreover said spigots cooperate with the two bell-crank members and to the horizontal slots in the vertical support plates.
Said bell-crank members, as they translate horizontally due to the piston, move the small frame which during this movement removes by means of an edge thereof the exhausted coffee tablet.
The spout fixed to said frame serves to introduce into the cleaned filter a new dose of coffee.
The machine of the present invention will now be described by way of example with reference to the accompanying drawing illustrating an exploded view.
The machine for automatically producing coffee comprises a base 1 having fixed thereto two vertical parallel support plates 2 and 2', said plates being suitably spaced from one another by a small bar 3.
Between the support plates 2 and 2' a piston 4 is located which in its movement follows a particular trajectory in a vertical plane parallel to said plates, as will be described in more detail hereafter.
The piston 4 is articulated to the small end of a piston rod 5 and the big end of which is articulated to a spindle 6. The ends of said spindle 6 are threaded and fixed eccentrically to two toothed or gear wheels 7 and 7' freely rotating on a pin 8 fixed to the inner surface of each plate 2 and 2'.
The wheels 7 and 7' are respectively driven by two gears 9 and 9' mounted on a spindle 10 which, through a joint 11, is coupled to a geared motor assembly 12.
The piston 4 is pivoted at the end portions thereof to two parallel horizontal rods 13 and 14 which are capable of respectively sliding along the upper guide 15 and lower guide 16 provided on each plate 2 and 2'.
More specifically the upper guide 15 extends vertically, whereas the lower one 16 follows a trajectory forming an obtuse angle, one side being vertical and the other slanted upwardly.
The rods 13 and 14, moreover, slide along respective slots 17 and 18 provided on a bell-crank member which, through a button 20, is connected to a third horizontal guide 21 provided on each plate 2 and 2' At the upper portion of the piston 4 a pin 22 is fixed at a position offset from the central axis, which pin as the piston rises, engages a cantilevered plate 23 rigid with a U-shaped upper plate 24 threaded on the pin 8.
The base 25 of the piston 4 is of smaller diameter than the cylinder 26 and is provided with a toroidal gasket thereby closing or sealing the cylinder 26 housing the filter into which the coffee is introduced.
The cylinder 26 is mounted on a block 27 fixed to the base I and provided with an axial recess or hollow acting as a slide guide for an ejector 28 anchored perpendicularly to a horizontal plate 29.
The plate 29 is provided with end pins which, by passing through the slots 30 on each plate 2 and 2' engage the lower ends of the slots 34 provided on two shaped plates 31 and 31'.
The shaped plates 31 and 31' are coupled, by a suitable clearance, respectively to each outer wall of the plates 2 and 2' and are each fixed at their upper end by means of a resilient blade 32 thereby may assume a suitably diverging attitude with respect to said plates.
In particular in said shaped plates 31 and 31' two longitudinal slots 33 and 34 and an intermediate cut-out portion 35, as delimitated by suitably curved lines, are provided. The upper slot 33 registers with the first slot 15 and the lower slot 34 registers with the fourth slot 30 of each plate 2 and 2'.
From the lower slot 34 a small spout 36 projects which conveys the infused coffee from the block 27 supporting the filter to the outside.
To the movable bell-crank members 19 a small frame 37 is fixed, said frame having vertical walls and supporting a connector 38 articulated to the pin 39 for introducing the ground coffee into the cylinder 26.
To the cylinder 26 a duct 40 leads, said duct being connected, through a valve 41, to a pump (not shown in the figure) for metering the hot water necessary for producing the beverage.
At the ends of the rod 14 of the piston 4, two spigots 42 are fixed inserting into and sliding along the slots 16 and 18 and projecting from the outer plates 31 and 31' at the cut-away portions 35.
The operation of the instant machine is briefly the following: by rotating for a half revolution the toothed or gear wheels 7 and 7', the piston 4 is caused to lower which, by assuming a vertical attitude, seals or closes the cylinder 26 filled by a suitable coffee dose.
At the stroke end, the rod 13 of the piston 4 actuates microswitch 43 and the gate of the valve 41 located in the circuit for supplying the hot water.
Said microswitch 43, in particular, switches the electric current supplying the geared motor assembly 12 to the aforesaid metering pump, thereby locking the stroke or movement of the piston 4.
After a suitable metering of water to the cylinder 26, the operation of said pump is stopped manually or by means of suitable mechanisms.
Accordingly the supply electric current is switched, automatically, to the geared motor assembly 12 which rotates the toothed wheels 7 and 7' and causes the piston 4 to rise again.
As the piston 4 rises, it assumes, due to the engaging of the axes 13 and 14 thereof respectively with the slots 15 and 16 and due to the engaging of the pin 22 against the shaped plate 23, an oblique attitude with respect to the vertical axis and shifts from the vertical line of the cylinder 26.
In turn the spigots 42 engage, through the cut-away portions 35, the plates 31 and 31', thereby raising said plates and causing the expeller 28 to upwardly translate and remove from the filter the tablet of exhausted coffee, expelling said tablet from the cylinder 26.
Subsequently the engagement between the pin 22 and the plate 23 causes the piston 4 to rotate and move the bell-crank member 19 and hence the frame 37.
Said frame 37 during its movement skims the filter and removes the tablet of exhausted coffee.
Then the spigots 42 leave the bend portions 35 so that said plates 31 and 31' fall down again to locate the filter in the seat of the cylinder 26.
At the end of the rising stroke of the piston 4, one of the spigots 42 operates microswitch 44 which interrupts the electric supply to the machine.
From the above and the figure of the accompanying drawing the structural simplicity, the functionality, the ease of use and the true automatic nature of the machine for automatically producing coffee of the present invention are self-evident.
WHAT WE CLAIM IS: 1. An automatic coffee making machine comprising: a base; two support plates extending parallel to each other and vertically mounted on said base, each said plate being provided, from the top to the bottom thereof, with a first vertical guide, a second guide formed with a vertical portion and an inclined portion forming therebetween them an obtuse angle, a third horizontal guide and a fourth vertical guide; two further plates resiliently and movably fixed respectively on each outer wall of said support plates, and each provided with an upper vertical slot, corresponding to the first guide of the support plates, with a lower vertical slot, corresponding to the fourth guide of the plates, and with an intermediate cut-away portion; a block to which a cylinder is fixed for housing a filter into which the coffee is introduced, provided with an axial recess in which an ejector slides, said ejector being anchored to a horizontal plate provided with side pins passing through the fourth guides of the support plates and engaging with the lower ends of the lower vertical slots in said further plates; a piston rod having one end thereof eccentrically pivoted to two toothed wheels rotatable on a pin fixed to the two support plates, the other end being articulated to a piston movable between said support plates; two bell-crank members each slidable along the third horizontal guide of the support plates and provided with two slots corresponding respectively to the first guide and the vertical portion of the second guide of the support plates, said bellcrank members carrying a frame to which is attached a spout for introducing the coffee into the cylinder; two longitudinally spaced parallel horizontal rods passing through said piston, one of which slides at its ends along the upper slots of the bell-crank members and the first vertical guides of the support plates, the other rod sliding along the lower slots of the bell-crank members and the
**WARNING** end of DESC field may overlap start of CLMS **.

Claims (8)

  1. **WARNING** start of CLMS field may overlap end of DESC **.
    the first slot 15 and the lower slot 34 registers with the fourth slot 30 of each plate 2 and 2'.
    From the lower slot 34 a small spout 36 projects which conveys the infused coffee from the block 27 supporting the filter to the outside.
    To the movable bell-crank members 19 a small frame 37 is fixed, said frame having vertical walls and supporting a connector 38 articulated to the pin 39 for introducing the ground coffee into the cylinder 26.
    To the cylinder 26 a duct 40 leads, said duct being connected, through a valve 41, to a pump (not shown in the figure) for metering the hot water necessary for producing the beverage.
    At the ends of the rod 14 of the piston 4, two spigots 42 are fixed inserting into and sliding along the slots 16 and 18 and projecting from the outer plates 31 and 31' at the cut-away portions 35.
    The operation of the instant machine is briefly the following: by rotating for a half revolution the toothed or gear wheels 7 and 7', the piston 4 is caused to lower which, by assuming a vertical attitude, seals or closes the cylinder 26 filled by a suitable coffee dose.
    At the stroke end, the rod 13 of the piston 4 actuates microswitch 43 and the gate of the valve 41 located in the circuit for supplying the hot water.
    Said microswitch 43, in particular, switches the electric current supplying the geared motor assembly 12 to the aforesaid metering pump, thereby locking the stroke or movement of the piston 4.
    After a suitable metering of water to the cylinder 26, the operation of said pump is stopped manually or by means of suitable mechanisms.
    Accordingly the supply electric current is switched, automatically, to the geared motor assembly 12 which rotates the toothed wheels 7 and 7' and causes the piston 4 to rise again.
    As the piston 4 rises, it assumes, due to the engaging of the axes 13 and 14 thereof respectively with the slots 15 and 16 and due to the engaging of the pin 22 against the shaped plate 23, an oblique attitude with respect to the vertical axis and shifts from the vertical line of the cylinder 26.
    In turn the spigots 42 engage, through the cut-away portions 35, the plates 31 and 31', thereby raising said plates and causing the expeller 28 to upwardly translate and remove from the filter the tablet of exhausted coffee, expelling said tablet from the cylinder 26.
    Subsequently the engagement between the pin 22 and the plate 23 causes the piston 4 to rotate and move the bell-crank member
    19 and hence the frame 37.
    Said frame 37 during its movement skims the filter and removes the tablet of exhausted coffee.
    Then the spigots 42 leave the bend portions 35 so that said plates 31 and 31' fall down again to locate the filter in the seat of the cylinder 26.
    At the end of the rising stroke of the piston 4, one of the spigots 42 operates microswitch 44 which interrupts the electric supply to the machine.
    From the above and the figure of the accompanying drawing the structural simplicity, the functionality, the ease of use and the true automatic nature of the machine for automatically producing coffee of the present invention are self-evident.
    WHAT WE CLAIM IS: 1. An automatic coffee making machine comprising: a base; two support plates extending parallel to each other and vertically mounted on said base, each said plate being provided, from the top to the bottom thereof, with a first vertical guide, a second guide formed with a vertical portion and an inclined portion forming therebetween them an obtuse angle, a third horizontal guide and a fourth vertical guide; two further plates resiliently and movably fixed respectively on each outer wall of said support plates, and each provided with an upper vertical slot, corresponding to the first guide of the support plates, with a lower vertical slot, corresponding to the fourth guide of the plates, and with an intermediate cut-away portion; a block to which a cylinder is fixed for housing a filter into which the coffee is introduced, provided with an axial recess in which an ejector slides, said ejector being anchored to a horizontal plate provided with side pins passing through the fourth guides of the support plates and engaging with the lower ends of the lower vertical slots in said further plates; a piston rod having one end thereof eccentrically pivoted to two toothed wheels rotatable on a pin fixed to the two support plates, the other end being articulated to a piston movable between said support plates; two bell-crank members each slidable along the third horizontal guide of the support plates and provided with two slots corresponding respectively to the first guide and the vertical portion of the second guide of the support plates, said bellcrank members carrying a frame to which is attached a spout for introducing the coffee into the cylinder; two longitudinally spaced parallel horizontal rods passing through said piston, one of which slides at its ends along the upper slots of the bell-crank members and the first vertical guides of the support plates, the other rod sliding along the lower slots of the bell-crank members and the
    second guides of the support plates; said piston being provided with a pin offset from the central axis of said piston and having a base capable of sealing the cylinder; a cantilevered plate fixed to the walls of the vertical support plates and engaged by the pin of the piston during the rising stroke of the latter; two spigots fixed at the end of the lower rod of the piston, said spigots sliding in the lower slots of the bell-crank members and in the second guides of the support plates and projecting from the further plates at the cut-away portions; a microswitch controlling the water supply, actuated by one end of the upper rod of the piston in the lowered position thereof, and a microswitch for supplying the current to the machine, actuated by one of the spigots when the piston is at or near its top dead centre position.
  2. 2. A machine as claimed in claim 1, wherein said two support plates are spaced from one another by a bar.
  3. 3. A machine as claimed in claim 1, wherein the toothed wheels are driven by two gears mounted on a spindle coupled to a geared motor assembly.
  4. 4. A machine as claimed in claim 1, 2 or 3, wherein the cantilevered plate is rigid with a U-shaped plate threaded through a pin fixed to the walls of the support plates.
  5. 5. A machine as claimed in any one of the preceding claims, wherein the further plates are resiliently and movably connected to the outer walls of the support plates by means of a resilient blade located in the upper portion of said plates.
  6. 6. A machine as claimed in any one of the preceding claims, wherein a spout for conveying the coffee from the block to the outside projects from the lower slot of one of said further plates.
  7. 7. A machine as claimed in any one of the preceding claims, wherein a duct for metering the hot water is provided between a cylinder and a valve of a pump.
  8. 8. An automatic coffee making machine substantially as described with reference to the accompanying drawing.
GB1563278A 1977-11-22 1978-04-20 Automatic machine for coffee Expired GB1596230A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT2989877A IT1088649B (en) 1977-11-22 1977-11-22 MECHANICAL GROUP, FOR THE AUTOMATIC PRODUCTION OF ESPRESSO COFFEE

Publications (1)

Publication Number Publication Date
GB1596230A true GB1596230A (en) 1981-08-19

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ID=11228635

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1563278A Expired GB1596230A (en) 1977-11-22 1978-04-20 Automatic machine for coffee

Country Status (5)

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DE (1) DE2817423A1 (en)
ES (1) ES469607A1 (en)
FR (1) FR2409032A1 (en)
GB (1) GB1596230A (en)
IT (1) IT1088649B (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0091059A2 (en) * 1982-04-01 1983-10-12 Richard Dexter Chapin Drip irrigation system employing adjacently arranged flow-restricting passages
EP0288414A2 (en) * 1987-04-23 1988-10-26 Newco Research Corporation Modularized custom beverage brewer

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE59104771D1 (en) * 1990-11-16 1995-04-06 Jura Elektroapparate Ag Brewing device, in particular for a coffee machine.
IT1297289B1 (en) * 1997-11-03 1999-09-01 San Remo Srl COFFEE DISPENSING DEVICE
EP3053490B1 (en) 2015-02-04 2017-09-06 Tuttoespresso S.r.l. Brewing unit for a beverage dispensing machine

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0091059A2 (en) * 1982-04-01 1983-10-12 Richard Dexter Chapin Drip irrigation system employing adjacently arranged flow-restricting passages
EP0091059A3 (en) * 1982-04-01 1984-09-26 Richard Dexter Chapin Drip irrigation system employing adjacently arranged flow-restricting passages
EP0288414A2 (en) * 1987-04-23 1988-10-26 Newco Research Corporation Modularized custom beverage brewer
EP0288414A3 (en) * 1987-04-23 1990-10-24 Newco Research Corporation Modularized custom beverage brewer

Also Published As

Publication number Publication date
IT1088649B (en) 1985-06-10
FR2409032A1 (en) 1979-06-15
DE2817423A1 (en) 1979-05-23
ES469607A1 (en) 1979-01-16

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