EP0026008A1 - Dispositif pour l'encordage de raquettes - Google Patents

Dispositif pour l'encordage de raquettes Download PDF

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Publication number
EP0026008A1
EP0026008A1 EP80200735A EP80200735A EP0026008A1 EP 0026008 A1 EP0026008 A1 EP 0026008A1 EP 80200735 A EP80200735 A EP 80200735A EP 80200735 A EP80200735 A EP 80200735A EP 0026008 A1 EP0026008 A1 EP 0026008A1
Authority
EP
European Patent Office
Prior art keywords
aforesaid
lever
housing
microswitch
fixed
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Withdrawn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
EP80200735A
Other languages
German (de)
English (en)
Inventor
Emiel Henri Fischer
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.)
FISCHER INDUSTRIES PVBA
Original Assignee
FISCHER INDUSTRIES PVBA
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
Priority claimed from BE2/58042A external-priority patent/BE878579A/nl
Application filed by FISCHER INDUSTRIES PVBA filed Critical FISCHER INDUSTRIES PVBA
Publication of EP0026008A1 publication Critical patent/EP0026008A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B51/00—Stringing tennis, badminton or like rackets; Strings therefor; Maintenance of racket strings
    • A63B51/14—Arrangements for stringing, e.g. for controlling the tension of the strings during stringing

Definitions

  • the present invention relates to a device for stringing rackets, more especially tennis rackets.
  • this invention relates to a device for stringing rackets, more especially tennis rackets, the tractive power to be exerted on the string being accurately pre-determined and continuously applied to the string, in such a way this tractive power will be maintained during the whole operation, and this device being such that, should the aforesaid tractive power decrease due to any external cause, for instance through elongation of the material, the device will automatically be adjusted again to the aforesaid pre-determined tractive power.
  • tractive power will correspond to the pre-determined value at all times, independently of the elongation of the material used, of a less effective clamping of the string, of too high a slipperiness factor, etc.
  • the device according to the invention is of a very simple execution, whilst the adjustment of the desired tractive power can be carried out in a very simple way and can be appropriately read.
  • Another object of the device according to the invention is that it is fixed on a frame, on which is also fixed the frame that carries the rackets to be stringed, that between the device according to the invention and frame carrying the racket to be stringed a certain relative motion is possible, which is very advantageous in case of repairs, because it offers the possibility of using short pieces of catgut.
  • Another object still of the invention is that the device is driven by electricity, whereby the work is carried out nearly noiselessly, which is not the case for racket stringing devices using as a driving means an air compressor.
  • a driving means an air compressor.
  • One will preferably use a low voltage, in order to obtain a very high degree of safety.
  • the device according to the invention is very reliable because of its simplicity, resulting in its maintainance being limited to a strict minimum.
  • the device according to the invention that offers the aforesaid and other advantages, mainly comprises two levers which are freely pivotably mounted with respect to a common support; on the free end of one of these levers means wherein a string of a racket can be fixed; at one end of the second lever means allowing it to pivot to and fro about its pivoting centre; between the aforesaid levers, elastic means allowing to transmit the to and fro motion of the aforesaid second lever to the first lever; adjustably fixed with respect to one end of the aforesaid elastic means, a microswitch and, firmly fixed to the second end of the aforesaid elastic means, means constituting a stop that can cooperate with the aforesaid microswitch.
  • FIG 1 there is shown a machine for stringing rackets, which mainly comprises a base frame 1 wherein, by means of pivots, respectively 2 and 3, a second frame 4 is suspended so that it can pivot to and fro and that it can be appropriately fixed in any desired position, there being movably and pivotably mounted on this second frame a frame 5, wherein the rackets 6 to be strung can appropriately be fixed, for instance by clamping means, respectively 7 and 8, and there being provided, on this frame 5, a guide 9 on which it is possible to slide a clamp 10.
  • Each device 11 mainly comprises two levers, respectively 12 and 13, which, by means of pivots, respectively 14 and 15, are freely pivotably fixed in relation to a housing 16, which rests and is fixed on the frame 4, the lever 13, beyound its pivoting point 15, carrying a toothed sector 17 which is continuously in mesh with a pinion 18, provided on the shaft 19 of an electric motor 20.
  • clamping means which are known in themselves, for the string 21 to be put under tension, which in this case consist in a transversal lath 22, on which are provided small movable pressing parts, respectively 23 and 24.
  • this spring is connected with the profiled end 31 of a rod 32, which is pivotably connected by means of a pivot 33 with the free end of the lever 13, on the one hand, whereas this rod 32, by means of a pin or similar part 34, on the other hand, is connected with a guide 35 for the aforesaid spring, this guide being freely slidably mounted in the aforesaid housing 28 and being provided with an appropriate projection 36 which, during the relative displacement of the guide 35, is capable of moving in relation to the housing 28 in a groove 37 which is provided in the housing 28.
  • the housing 40 of a microswitch 41 By means of dovetail projections, respectively 38 and 39, there is slidably mounted the housing 40 of a microswitch 41, the contact component 42 of which, in this case in the shape of a small wheel, is placed in the groove 37 and, consequently, can come into contact with the aforesaid projection 36 of the guide 35.
  • the housing 40 of the aforesaid microswitch is provided with a projection 43 in which there is provided a threaded hole 44 cooperating with a threaded rod 45, which is rotatably but axially unmovably mounted in a projection 46 provided for this purpose on the aforesaid housing 28, whilst it is possible to turn this threaded rod 45 by means of an appropriate control button 47.

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  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Physical Education & Sports Medicine (AREA)
  • Mechanisms For Operating Contacts (AREA)
EP80200735A 1979-09-04 1980-08-01 Dispositif pour l'encordage de raquettes Withdrawn EP0026008A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
BE2/58042A BE878579A (nl) 1979-09-04 1979-09-04 Inrichting voor het besnaren van raketten
BE58042 1979-09-04

Publications (1)

Publication Number Publication Date
EP0026008A1 true EP0026008A1 (fr) 1981-04-01

Family

ID=3865469

Family Applications (1)

Application Number Title Priority Date Filing Date
EP80200735A Withdrawn EP0026008A1 (fr) 1979-09-04 1980-08-01 Dispositif pour l'encordage de raquettes

Country Status (1)

Country Link
EP (1) EP0026008A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0034688A3 (en) * 1980-02-18 1981-11-11 Snauwaert & Depla Societe Belge Machine for stringing rackets
WO1990003829A1 (fr) * 1988-10-15 1990-04-19 Korte Jungermann Hans Werner Procede et dispositif de cordage de raquettes pour jeux de balle
USD1114859S1 (en) * 2024-10-25 2026-02-24 Jose Frank Statham Racquet mounting equipment

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE622593C (de) * 1933-02-11 1935-12-02 Solomon Hirsh Sieff Maschine zum Anspannen der Besaitung von Tennisschlaegern
US3441275A (en) * 1967-03-03 1969-04-29 Franklin W Held Racket stringer
BE744769A (fr) * 1970-01-22 1970-07-01 Meyer Alfons De Dispositif pour le cordage ou recordage de raquettes,
US3918713A (en) * 1974-03-15 1975-11-11 Bernard Kaminstein Racket stringing machine
US3988022A (en) * 1975-06-04 1976-10-26 Tennis Machines, Inc. Racket stringing machine
US4156525A (en) * 1977-10-03 1979-05-29 Parnell Paul E Racket stringing apparatus
BE878579A (nl) * 1979-09-04 1980-03-04 Fischer Ind Pv Inrichting voor het besnaren van raketten

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE622593C (de) * 1933-02-11 1935-12-02 Solomon Hirsh Sieff Maschine zum Anspannen der Besaitung von Tennisschlaegern
US3441275A (en) * 1967-03-03 1969-04-29 Franklin W Held Racket stringer
BE744769A (fr) * 1970-01-22 1970-07-01 Meyer Alfons De Dispositif pour le cordage ou recordage de raquettes,
US3918713A (en) * 1974-03-15 1975-11-11 Bernard Kaminstein Racket stringing machine
US3988022A (en) * 1975-06-04 1976-10-26 Tennis Machines, Inc. Racket stringing machine
US4156525A (en) * 1977-10-03 1979-05-29 Parnell Paul E Racket stringing apparatus
BE878579A (nl) * 1979-09-04 1980-03-04 Fischer Ind Pv Inrichting voor het besnaren van raketten

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0034688A3 (en) * 1980-02-18 1981-11-11 Snauwaert & Depla Societe Belge Machine for stringing rackets
WO1990003829A1 (fr) * 1988-10-15 1990-04-19 Korte Jungermann Hans Werner Procede et dispositif de cordage de raquettes pour jeux de balle
USD1114859S1 (en) * 2024-10-25 2026-02-24 Jose Frank Statham Racquet mounting equipment

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Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Designated state(s): DE FR GB IT NL

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 19820309

RIN1 Information on inventor provided before grant (corrected)

Inventor name: FISCHER, EMIEL HENRI