EP0638263A1 - Process for manufacturing a natural-bristle broom head and broom thus obtained - Google Patents

Process for manufacturing a natural-bristle broom head and broom thus obtained Download PDF

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Publication number
EP0638263A1
EP0638263A1 EP94112064A EP94112064A EP0638263A1 EP 0638263 A1 EP0638263 A1 EP 0638263A1 EP 94112064 A EP94112064 A EP 94112064A EP 94112064 A EP94112064 A EP 94112064A EP 0638263 A1 EP0638263 A1 EP 0638263A1
Authority
EP
European Patent Office
Prior art keywords
bristles
head
broom
templates
base
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.)
Withdrawn
Application number
EP94112064A
Other languages
German (de)
English (en)
French (fr)
Inventor
Federico Truccolo
Soave Silvestri
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of EP0638263A1 publication Critical patent/EP0638263A1/en
Withdrawn legal-status Critical Current

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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
    • A46B3/02—Brushes characterised by the way in which the bristles are fixed or joined in or on the brush body or carrier by pitch, resin, cement, or other adhesives
    • 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

Definitions

  • the present invention relates to a process for manufacturing a natural-bristle broom head and to a broom thus obtained.
  • the invention is particularly but not exclusively used in the field of equipment for the predominantly manual cleaning of enclosed spaces.
  • Brooms are known in the current state of the art. Originally the broom could be composed of an operating handle, generally made of wood, and of a bundle of plant fibers which was rigidly coupled to the end of said handle. A kind of broom based on the above described system is still used extensively nowadays, with particular reference to the traditional sorghum broom. This broom also uses plant fibers but, differently from the preceding ones, it can use an appropriate support or sheath for the fibers, now made of plastics, on which the end of a handle can also be engaged. Since in this case the sorghum bundle is very long with respect to a normal broom, it is stitched several times transversely and anchored according to empirical techniques to the plastic support by means of staples or similar stitchings and other more or less valid systems.
  • this broom is composed of a handle which is fixed or telescopically extendable and is provided with an adjustment and locking ring as well as with a supporting head for the bristles, which are exclusively synthetic.
  • the structure of the semifinished head generally has a substantially rectangular shape with rounded edges; on one side it is flat, and on the other side it has a protruding bush inside which it is possible to coaxially insert the end of a handle, providing the necessary connection.
  • the semifinished heads advance on a same plane along an advancement line to undergo first of all a drilling step, which affects the entire flat surface thereof that lies opposite to the connection, and then the step of anchoring of the bristles to the support by means of an appropriate multiple-head stapling machine.
  • tufts of synthetic bristles are picked up mechanically and inserted in each instance in the individual dead holes formed previously, compressing the tufts to such an extent as to bend the end at least as much as the depth of the hole, then finally centrally applying a retention staple that anchors to the bottom of the hole, astride the tuft of bristles.
  • paintbrushes are known; although they are intended for entirely different purposes, they are part of the state of the art and as such are to be mentioned.
  • paintbrushes too use a handle which is short instead of being long and on the end of which a particular bristle anchoring structure is associated; in this case, however, the bristles are natural.
  • paintbrushes have a thick appearance, especially perimetrically, and can have bristles of different lengths.
  • the process for manufacturing paintbrushes is still currently predominantly manual, particularly as regards the step for preparing for the insertion of the tufts of bristles on the support that is associated with the handle.
  • the aim of the present invention is also to obviate the above drawbacks.
  • a broom A is composed first of all of a handle 1 and of a head 2 below which natural bristles 3 are associated; said bristles are of the type obtained from swine.
  • the shape of the head 2 is substantially rectangular, with rounded ends and edges.
  • the head has, on one side, a bush 4 for connection to the handle 1; said bush is internally provided with a female thread to accommodate the end of the handle which is obviously male.
  • the head 2 is perimetrically provided with a containment shoulder or side 5 whose side is not perpendicular to the base 6 of said head but is slightly inclined inward. Slots 7 are provided along the base 6, and they, too, form a dovetail seat, specifically two parallel seats which have the same dimensions.
  • a slot 8 is also formed centrally, and its walls 8' are not perpendicular and form, at least for a significant extent, a dovetail shape which however, in this case, by affecting the parallel slots 7, forms a ring and corresponds to the base perimeter of the connecting bush 4.
  • a process can consist in providing multiple inverted heads 2 which are preliminarily arranged on a same plane and are subjected, along an advancement line, to a first step which consists in pouring inside each head an adhesive 9, for example epoxy resins or polyurethane, which are kept below the rim of the head 2.
  • a first step which consists in pouring inside each head an adhesive 9, for example epoxy resins or polyurethane, which are kept below the rim of the head 2.
  • bristles 3 are vertically and randomly inserted inside a series of templates 10.
  • Each template 10 is essentially constituted by a substantially rectangular box-like structure which has four containment walls and a base 10'. Multiple holes 10'' of constant diameter are formed on the entire surface of said base 10'.
  • the arrangement and configuration of the rows of holes 10'' is such as to have diagonally arranged holes along the perimeter of the base 10', distributed in a substantially concentric manner with an inclination angle that gradually decreases from the outside towards the inside of the base 10' until exactly perpendicular holes 10'' are obtained centrally with respect to the base.
  • the purpose of the holes 10'' is to allow a correct distribution of the bristles 3 as regards their arrangement and inclination, since it is known that the working surface of the broom A must allow to reach the tightest spaces by offering divergent initial bristles 3. More specifically, in a preferred solution the sides of a template 10 can have grooves 11 which are formed along the inner surface and would have the purpose of facilitating the bristles 3 in remaining upright.
  • the templates are vibrated in a particular manner, allowing clustering into tufts and uniform distribution in bundles of bristles 3 which pass through the holes 10'' and are retained by them. More particularly, the templates 10, by being raised, allow each group of bristles 3 to protrude with its lower end 3' beyond the base 10' of said template, at least matching the height of the containment sides of a head 2.
  • the templates 10 are raised and placed above the heads 2', embedding the ends 3' of the bristles 3 in the underlying glue 9. Once said glue has set, the templates 10 are removed, leaving the bristles 3 perfectly distributed on the head 2, which is thus finished. Of course, the bristles 3 that have remained inside the template 10 are finally recovered and returned upstream of the production cycle.

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Brushes (AREA)
  • Cleaning Implements For Floors, Carpets, Furniture, Walls, And The Like (AREA)
EP94112064A 1993-08-06 1994-08-02 Process for manufacturing a natural-bristle broom head and broom thus obtained Withdrawn EP0638263A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITTV930075 1993-08-06
IT93TV000075A IT1266115B1 (it) 1993-08-06 1993-08-06 Procedimento per la realizzazione di una tavoletta di scopa in setole naturali e scopa cosi' ottenuta

Publications (1)

Publication Number Publication Date
EP0638263A1 true EP0638263A1 (en) 1995-02-15

Family

ID=11419295

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94112064A Withdrawn EP0638263A1 (en) 1993-08-06 1994-08-02 Process for manufacturing a natural-bristle broom head and broom thus obtained

Country Status (2)

Country Link
EP (1) EP0638263A1 (it)
IT (1) IT1266115B1 (it)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102319047A (zh) * 2011-10-14 2012-01-18 傅彩明 一种扫把

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH178182A (de) * 1935-01-05 1935-07-15 E Von Arx & Cie Deckenstreichbürste.
CH178183A (de) * 1935-01-05 1935-07-15 E Von Arx & Cie Verfahren zur Herstellung von Deckenstreichbürsten.
DE1632373A1 (de) * 1968-02-29 1970-11-05 Kleinewefers Soehne J Verfahren zur Herstellung von Buerstkoerpern,insbesondere von Buerstwalzen
DE2636023A1 (de) * 1975-08-14 1977-03-03 Newark Brush Co Buerste und verfahren zu deren herstellung
FR2335177A1 (fr) * 1975-12-19 1977-07-15 Selle Sa Ets Edgard Procede de fabrication de pinceaux et moyens mis en oeuvre dans le procede
CA1185640A (en) * 1983-01-06 1985-04-16 William H. Porter Method for making brooms

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH178182A (de) * 1935-01-05 1935-07-15 E Von Arx & Cie Deckenstreichbürste.
CH178183A (de) * 1935-01-05 1935-07-15 E Von Arx & Cie Verfahren zur Herstellung von Deckenstreichbürsten.
DE1632373A1 (de) * 1968-02-29 1970-11-05 Kleinewefers Soehne J Verfahren zur Herstellung von Buerstkoerpern,insbesondere von Buerstwalzen
DE2636023A1 (de) * 1975-08-14 1977-03-03 Newark Brush Co Buerste und verfahren zu deren herstellung
FR2335177A1 (fr) * 1975-12-19 1977-07-15 Selle Sa Ets Edgard Procede de fabrication de pinceaux et moyens mis en oeuvre dans le procede
CA1185640A (en) * 1983-01-06 1985-04-16 William H. Porter Method for making brooms

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102319047A (zh) * 2011-10-14 2012-01-18 傅彩明 一种扫把

Also Published As

Publication number Publication date
IT1266115B1 (it) 1996-12-20
ITTV930075A1 (it) 1995-02-06
ITTV930075A0 (it) 1993-08-06

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