GB550229A - Improvements in or relating to the manufacture of brushes - Google Patents
Improvements in or relating to the manufacture of brushesInfo
- Publication number
- GB550229A GB550229A GB8032/41A GB803241A GB550229A GB 550229 A GB550229 A GB 550229A GB 8032/41 A GB8032/41 A GB 8032/41A GB 803241 A GB803241 A GB 803241A GB 550229 A GB550229 A GB 550229A
- Authority
- GB
- United Kingdom
- Prior art keywords
- bristles
- core
- mould
- brush
- hopper
- 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
-
- A—HUMAN NECESSITIES
- A46—BRUSHWARE
- A46B—BRUSHES
- A46B3/00—Brushes characterised by the way in which the bristles are fixed or joined in or on the brush body or carrier
- A46B3/04—Brushes characterised by the way in which the bristles are fixed or joined in or on the brush body or carrier by mouldable materials, e.g. metals, cellulose derivatives, plastics
-
- A—HUMAN NECESSITIES
- A46—BRUSHWARE
- A46D—MANUFACTURE OF BRUSHES
- A46D3/00—Preparing, i.e. Manufacturing brush bodies
- A46D3/005—Preparing, i.e. Manufacturing brush bodies by moulding or casting a body around bristles or tufts of bristles
-
- 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
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
- B29C45/14336—Coating a portion of the article, e.g. the edge of the article
- B29C45/14385—Coating a portion of a bundle of inserts, e.g. making brushes
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Brushes (AREA)
Abstract
550,229. Moulding brushes. HOOVER, Ltd. June 26, 1941, No. 8032. Convention date, Aug. 29, 1940. [Class 87 (ii)] [Also in Group XXIII] In making a brush comprised of bristles of a synthetic organic compound, particularly of nylon, moulded and fused into a thermoplastic back, particularly one containing polymerized vinyl acetate and polymerized vinyl chloride, the bristles are fed from a hopper 25, Fig. 4, by a notch 28 in a reciprocating separator 26, 27 to a position over a loading core 16, into which they are forced by a plunger 30 so that their looped ends project below the base of the core. This loaded core is inserted in the movable member 15, Fig. 2, of a two part core with the bristles projecting into a cavity 18 in a stationary core member 14, and the thermoplastic material is forced into this cavity through a feeding orifice 19 from an injection nozzle 20 of a cylinder 21, into the rear portion of which the material is fed in pellet form 24 from a hopper 22. The forward end of the cylinder is provided with a heating chamber 23. Cooling fluid is circulated through passages 17 in the mould, causing the material to set rapidly around the ends of the bristles. The mould is then opened, the brush removed and the flash or sprue at the back of the brush cut off. In an alternative method, a number of filaments of the synthetic organic compound are brought together to form a continuous strand which may be wound on a drum, and the end of each strand is fused so that the strands can be readily threaded into the seats in the movable mould member without using a loading core. The operation then proceeds as before, the mould members being finally separated a sufficient distance to allow the bristles to be cut off to form the brush, leaving a small amount of the strands projecting from the mould member ready for the next operation.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US550229XA | 1940-08-29 | 1940-08-29 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB550229A true GB550229A (en) | 1942-12-30 |
Family
ID=21995054
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB8032/41A Expired GB550229A (en) | 1940-08-29 | 1941-06-26 | Improvements in or relating to the manufacture of brushes |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB550229A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5044041A (en) * | 1986-04-21 | 1991-09-03 | Mats Ljungberg | Tooth cleaner and method for the manufacture thereof |
-
1941
- 1941-06-26 GB GB8032/41A patent/GB550229A/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5044041A (en) * | 1986-04-21 | 1991-09-03 | Mats Ljungberg | Tooth cleaner and method for the manufacture thereof |
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