US1822172A - Method of producing tablets of powdery material framed in metal - Google Patents

Method of producing tablets of powdery material framed in metal Download PDF

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Publication number
US1822172A
US1822172A US305598A US30559828A US1822172A US 1822172 A US1822172 A US 1822172A US 305598 A US305598 A US 305598A US 30559828 A US30559828 A US 30559828A US 1822172 A US1822172 A US 1822172A
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Prior art keywords
metal
tablets
press
pressing
tablet
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Expired - Lifetime
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US305598A
Inventor
Pfleumer Herman
Oexmann Heinrich
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
    • B30B15/30—Feeding material to presses
    • B30B15/302—Feeding material in particulate or plastic state to moulding presses
    • B30B15/304—Feeding material in particulate or plastic state to moulding presses by using feed frames or shoes with relative movement with regard to the mould or moulds
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B11/00—Making preforms
    • B29B11/06—Making preforms by moulding the material
    • B29B11/12—Compression moulding
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C31/00—Handling, e.g. feeding of the material to be shaped, storage of plastics material before moulding; Automation, i.e. automated handling lines in plastics processing plants, e.g. using manipulators or robots
    • B29C31/04—Feeding of the material to be moulded, e.g. into a mould cavity
    • B29C31/06—Feeding of the material to be moulded, e.g. into a mould cavity in measured doses, e.g. by weighting
    • B29C31/065—Feeding of the material to be moulded, e.g. into a mould cavity in measured doses, e.g. by weighting using volumetric measuring chambers moving between a charging station and a discharge station
    • B29C31/066—Feeding of the material to be moulded, e.g. into a mould cavity in measured doses, e.g. by weighting using volumetric measuring chambers moving between a charging station and a discharge station using feed frames, e.g. for dry material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
    • B29C43/02—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles
    • B29C43/04—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles using movable moulds
    • B29C43/06—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles using movable moulds continuously movable in one direction, e.g. mounted on chains, belts
    • B29C43/08—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles using movable moulds continuously movable in one direction, e.g. mounted on chains, belts with circular movement, e.g. mounted on rolls, turntables
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
    • B29C43/02—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles
    • B29C43/14—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles in several steps
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
    • B29D19/00—Producing buttons or semi-finished parts of buttons
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B11/00—Presses specially adapted for forming shaped articles from material in particulate or plastic state, e.g. briquetting presses, tabletting presses
    • B30B11/02—Presses specially adapted for forming shaped articles from material in particulate or plastic state, e.g. briquetting presses, tabletting presses using a ram exerting pressure on the material in a moulding space
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B11/00—Presses specially adapted for forming shaped articles from material in particulate or plastic state, e.g. briquetting presses, tabletting presses
    • B30B11/02—Presses specially adapted for forming shaped articles from material in particulate or plastic state, e.g. briquetting presses, tabletting presses using a ram exerting pressure on the material in a moulding space
    • B30B11/14—Presses specially adapted for forming shaped articles from material in particulate or plastic state, e.g. briquetting presses, tabletting presses using a ram exerting pressure on the material in a moulding space co-operating with moulds on a movable carrier other than a turntable or a rotating drum
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
    • B29C43/02—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles
    • B29C43/04—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles using movable moulds
    • B29C2043/046—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles using movable moulds travelling between different stations, e.g. feeding, moulding, curing stations
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
    • B29C43/32—Component parts, details or accessories; Auxiliary operations
    • B29C43/36—Moulds for making articles of definite length, i.e. discrete articles
    • B29C43/361—Moulds for making articles of definite length, i.e. discrete articles with pressing members independently movable of the parts for opening or closing the mould, e.g. movable pistons
    • B29C2043/3615—Forming elements, e.g. mandrels or rams or stampers or pistons or plungers or punching devices
    • B29C2043/3618—Forming elements, e.g. mandrels or rams or stampers or pistons or plungers or punching devices plurality of counteracting elements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
    • B29C43/32—Component parts, details or accessories; Auxiliary operations
    • B29C43/36—Moulds for making articles of definite length, i.e. discrete articles
    • B29C2043/3676—Moulds for making articles of definite length, i.e. discrete articles moulds mounted on rotating supporting constuctions
    • B29C2043/3689—Moulds for making articles of definite length, i.e. discrete articles moulds mounted on rotating supporting constuctions on a support table, e.g. flat disk-like tables having moulds on the periphery
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2791/00—Shaping characteristics in general
    • B29C2791/001—Shaping in several steps
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
    • B29C43/006—Pressing and sintering powders, granules or fibres
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
    • B29K2105/25—Solid
    • B29K2105/251—Particles, powder or granules
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
    • B29K2105/25—Solid
    • B29K2105/253—Preform
    • B29K2105/255—Blocks or tablets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2019/00—Buttons or semi-finished parts of buttons for haberdashery
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S264/00—Plastic and nonmetallic article shaping or treating: processes
    • Y10S264/64—Processes of using preform in molding

Definitions

  • buttons of material in powder tablets are first produced by an intermediate stage which are subsequently pressed in the pressing tool. It happens frequently that such tablets, specially if they have to be coloured and ornamented, are damaged easily, the inserting of the tablets into the pressing tool requirin much time as, for instance at the manutacturing of buttons, pressing tools'are used which press 100 or more tablets in one operation.
  • This invention has for its object to avoid these inconveniences.
  • the improved manufacturing method is as follows 2-
  • the material in powder form is pressed by the pressing piston from below into a hole in a metal plate which has been placed on the pressing chamber, the counter pressing plate with die on the lower surface exerting pressure from above so that a tablet of pressing material is obtained which is securely held on the metal plate.
  • the holding plate with 2 the tablet is then inserted into the pressing tool and the desired shape is given to the tablet by pressing in the usual manner.
  • the frame plate is preferably made of light metal, for instance an aluminum alloy,
  • Fig. 2 shows a metal frame with tablet in section.
  • Fig. 3 shows in side elevation a press tool l5 with metal framed tablet inserted.
  • Fi 4 shows the press tool shown in Fig. 3 in file position after the pressing.
  • the press for producing metal. framed tablets as shown in Fig. 1 consists of a pressing chamber 1 with press piston 2 forming the movable bottom plate and of an upper press plate 3. a The means for operating the press piston and the press-plate are not shown as such presses are commonly used.
  • the press tool for producing the desired article may be of any convenient construction. It comprises as shown in Figs. 3 and 4 a lower die 8 and an upper die 9 between which the metal framed tablet 7 is placed.
  • a suitable element for instance a rod 10 fixed in the upper die 9.
  • the tablet might however remain in the metal frame 4' during the press-- in lhe metal plate 4 may evidently have any desired number of holes, in which case the press tool must comprise a corresponding number of lower and upper dies to simultaneously press all the tablets contained in the metal plate 4.
  • the pressing operation is accelerated by ma ing the metal tablet frame 95 of light material, for instance an aluminium alloy, as in this case a better heat contact ex ists between the metal plate and the tablets.
  • light material for instance an aluminium alloy
  • a method of pressing tablets from powder- 100 preferably made ous material consisting in pressing the powderous materal into holes in a perforated metal glate which is higher than the tablets p in removing n 1eta.l illate with 5 the powderops matezrzal still m the oles, and in submitting the material to further treatmen whilst m the holes in the perforated plate.
  • HERMAN PFLEUMER FRANZ KBUGER. HEINRICH OEXMANN.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Robotics (AREA)
  • Glanulating (AREA)
  • Medical Preparation Storing Or Oral Administration Devices (AREA)
  • Confectionery (AREA)
  • Sampling And Sample Adjustment (AREA)
  • Adornments (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
  • Medicinal Preparation (AREA)

Description

p 3, 1931- H. PFLEUMER ET AL 1,822,172
METHOD OF PRODUCING TABLETS OF POWDERY MATERIAL FRAMED IN METAL Filed Sept. 12, 1928 III "tfi 4/ I W// W/ FIG. 3 FIG. 4-
Jzzvezzim' Patented Sept. 8, 1931 UNITED STATES PATENT OFFICE HERMAN IPFLEUMER, or DRESDEN-LOSOHWITZ, new 31mm; or nnnsnmv, AND HEINRICH OEXMANN, or BERLIN-LICHTERFELDE, GERMANY METHOD OF PRODUCING TABLETS OI POWDER! MATERIAL FRAMED IN METAL Application filed September 12, 1928, Serial No. 305,598, and in Germany September 16, 1927.
To obtain finished pressed articles, for instance buttons of material in powder, tablets are first produced by an intermediate stage which are subsequently pressed in the pressing tool. It happens frequently that such tablets, specially if they have to be coloured and ornamented, are damaged easily, the inserting of the tablets into the pressing tool requirin much time as, for instance at the manutacturing of buttons, pressing tools'are used which press 100 or more tablets in one operation.
This invention has for its object to avoid these inconveniences.
The improved manufacturing method is as follows 2- The material in powder form is pressed by the pressing piston from below into a hole in a metal plate which has been placed on the pressing chamber, the counter pressing plate with die on the lower surface exerting pressure from above so that a tablet of pressing material is obtained which is securely held on the metal plate. The holding plate with 2 the tablet is then inserted into the pressing tool and the desired shape is given to the tablet by pressing in the usual manner.
The frame plate is preferably made of light metal, for instance an aluminum alloy,
and it has a great number of holes so that in one operation a great number of tablets can be pressed to be subsequently treated all at the same time in an accordingly constructed ress-tool to obtain the finished articles.
preliminary press and a press-tool for carrying out the improved manufacturing method are diagrammatically illustrated, by way of example, in the accompanying drawin s in which 10- ig. 1 shows in vertical section a press for one single metal framed tablet.
Fig. 2 shows a metal frame with tablet in section.
Fig. 3 shows in side elevation a press tool l5 with metal framed tablet inserted.
Fi 4 shows the press tool shown in Fig. 3 in file position after the pressing.
The press for producing metal. framed tablets as shown in Fig. 1 consists of a pressing chamber 1 with press piston 2 forming the movable bottom plate and of an upper press plate 3. a The means for operating the press piston and the press-plate are not shown as such presses are commonly used.
On the pressing chamber 1 a metal plate 4 is placed which has a hole 5 into which the material in powder 6 is pressed by the piston 2 so that the compressed material is securely held in the hole of the metal plate 4 and a metal framed tablet 7 is formed as shown in The press tool for producing the desired article, for instance buttons, may be of any convenient construction. It comprises as shown in Figs. 3 and 4 a lower die 8 and an upper die 9 between which the metal framed tablet 7 is placed. When the upper die 9 is lowered upon the lower die 8 the tablet 7 is 3 moulded, the metal frame 4 being at the same time seperated from the tablet and pushed over the lower die 8 by the action of a suitable element, for instance a rod 10 fixed in the upper die 9. The tablet might however remain in the metal frame 4' during the press-- in lhe metal plate 4 may evidently have any desired number of holes, in which case the press tool must comprise a corresponding number of lower and upper dies to simultaneously press all the tablets contained in the metal plate 4.
It is obvious that by the improved method and tools any desired number of tablets may be produced and -subsequently moulded simultaneously, this meaning a considerable 85 saving of time so that the output is increased The metal plate 4 is thicker than the tablet to be obtained as shown in Fig. 2 so that the tablets in the 90 holes of plate 4 are well protected against dama e at the manipulation and at the storing 0% the plates.
At hot pressin the pressing operation is accelerated by ma ing the metal tablet frame 95 of light material, for instance an aluminium alloy, as in this case a better heat contact ex ists between the metal plate and the tablets.
We claim I A method of pressing tablets from powder- 100 preferably made ous material, consisting in pressing the powderous materal into holes in a perforated metal glate which is higher than the tablets p in removing n 1eta.l illate with 5 the powderops matezrzal still m the oles, and in submitting the material to further treatmen whilst m the holes in the perforated plate.
In testimony whereof we aflix our signs tlllBS.
HERMAN PFLEUMER. FRANZ KBUGER. HEINRICH OEXMANN.
US305598A 1927-09-17 1928-09-12 Method of producing tablets of powdery material framed in metal Expired - Lifetime US1822172A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEO16764D DE542905C (en) 1927-09-17 1927-09-17 Process and metal frame for the production of compressed powder tablets

Publications (1)

Publication Number Publication Date
US1822172A true US1822172A (en) 1931-09-08

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US305598A Expired - Lifetime US1822172A (en) 1927-09-17 1928-09-12 Method of producing tablets of powdery material framed in metal

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US (1) US1822172A (en)
DE (1) DE542905C (en)
FR (1) FR660483A (en)
GB (1) GB297125A (en)
NL (1) NL27551C (en)

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2452761A (en) * 1944-02-16 1948-11-02 Plax Corp Method of forming slabs of organic plastic material
US2483004A (en) * 1945-08-30 1949-09-27 Gregg Jon Premolding and loading apparatus
US2633027A (en) * 1951-07-19 1953-03-31 Western Electric Co Method of testing flow characteristics of granular materials
US2647397A (en) * 1951-08-13 1953-08-04 Harry W Dietert Company Method of forming and testing specimens of molding material
US2836707A (en) * 1954-10-01 1958-05-27 Stitt Charles Monroe Light filter
US2869947A (en) * 1955-03-21 1959-01-20 Charles R Kemper Variable density article and method of making
US2885727A (en) * 1956-03-05 1959-05-12 Wright Arthur Apparatus for manufacturing candles
US3084391A (en) * 1960-05-09 1963-04-09 Burroughs Corp Mold for encapsulating electrical components
US3254370A (en) * 1961-08-16 1966-06-07 Rauter Vita Zahnfabrik Apparatus for the manufacture of artificial teeth
WO2004103690A1 (en) * 2003-05-23 2004-12-02 Gamma Croma S.P.A. Method and apparatus for moulding cosmetic products
US20060098192A1 (en) * 2002-07-15 2006-05-11 Van Den Brink Peter J System for the preparation of multiple solid state samples, in particular for spectroscopic and microscopic analysis
ITMI20101299A1 (en) * 2010-07-15 2012-01-16 Rm Technology Engineering Di Maggioni Roberto COMPRESSION DEVICE OF DUST AND SIMILAR

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1304244B1 (en) 1998-11-26 2001-03-13 Sacmi MOLD FOR THE MANUFACTURE OF PLASTIC ITEMS.

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2452761A (en) * 1944-02-16 1948-11-02 Plax Corp Method of forming slabs of organic plastic material
US2483004A (en) * 1945-08-30 1949-09-27 Gregg Jon Premolding and loading apparatus
US2633027A (en) * 1951-07-19 1953-03-31 Western Electric Co Method of testing flow characteristics of granular materials
US2647397A (en) * 1951-08-13 1953-08-04 Harry W Dietert Company Method of forming and testing specimens of molding material
US2836707A (en) * 1954-10-01 1958-05-27 Stitt Charles Monroe Light filter
US2869947A (en) * 1955-03-21 1959-01-20 Charles R Kemper Variable density article and method of making
US2885727A (en) * 1956-03-05 1959-05-12 Wright Arthur Apparatus for manufacturing candles
US3084391A (en) * 1960-05-09 1963-04-09 Burroughs Corp Mold for encapsulating electrical components
US3254370A (en) * 1961-08-16 1966-06-07 Rauter Vita Zahnfabrik Apparatus for the manufacture of artificial teeth
US20060098192A1 (en) * 2002-07-15 2006-05-11 Van Den Brink Peter J System for the preparation of multiple solid state samples, in particular for spectroscopic and microscopic analysis
US7375807B2 (en) 2002-07-15 2008-05-20 Avantium International B.V. System for the preparation of multiple solid state samples, in particular for spectroscopic and microscopic analysis
WO2004103690A1 (en) * 2003-05-23 2004-12-02 Gamma Croma S.P.A. Method and apparatus for moulding cosmetic products
US20070071534A1 (en) * 2003-05-23 2007-03-29 Gamma Croma S.P.A. Method and apparatus for moulding cosmetic products
ITMI20101299A1 (en) * 2010-07-15 2012-01-16 Rm Technology Engineering Di Maggioni Roberto COMPRESSION DEVICE OF DUST AND SIMILAR

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Publication number Publication date
GB297125A (en) 1929-10-17
DE542905C (en) 1932-01-29
NL27551C (en)
FR660483A (en) 1929-07-17

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