US1938562A - Means for stringing tennis rackets - Google Patents

Means for stringing tennis rackets Download PDF

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Publication number
US1938562A
US1938562A US549671A US54967131A US1938562A US 1938562 A US1938562 A US 1938562A US 549671 A US549671 A US 549671A US 54967131 A US54967131 A US 54967131A US 1938562 A US1938562 A US 1938562A
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US
United States
Prior art keywords
frame
racket
tennis rackets
lever
clamping
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 - Lifetime
Application number
US549671A
Inventor
Tauber Siegfrid
Fischmann Ladislaus
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.)
Dunlop Rubber Co Ltd
Original Assignee
Dunlop Rubber Co Ltd
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 US348328A external-priority patent/US1943400A/en
Application filed by Dunlop Rubber Co Ltd filed Critical Dunlop Rubber Co Ltd
Priority to US549671A priority Critical patent/US1938562A/en
Application granted granted Critical
Publication of US1938562A publication Critical patent/US1938562A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • 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
    • A63B51/16—Apparatus for stringing while manufacturing
    • 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

  • This invention relates to improvements in means for stringing of tennis rackets with strings and the present application is a divisional application of applicants copending application filed March 22, 1929, Serial No. 348,328.
  • FIG. l is a vertical section on the line II of Fig. 2 and Fig. 2 shows the means in plan.
  • a connecting rod 20, 21 and these rods are pivotally connected to a two-armed lever 22 mounted to rock beneath the bar 3. This, ensures that the two levers 5, 6 and '7, 8 can only move in unison and each to the same extent.
  • the lever 22 has at one end an extension 23, which carries a screw-threaded bolt 24. his bolt is guided in a slot 25 in a plate 26 mounted beneath the bar 3 and can be secured in any. position in said slot by means of a wing nut.
  • the clamping jaws 12-13 lie in a common horizontal plane which is the working plane.
  • the frame of the racket is laid in the clamping device and by working the handle 15 the side portions of the frame 28 of the racket will be firmly clamped by the clamping jaws 12, 13.
  • the locking device 24 is provided in the slot 25 in the plate 26.
  • a clamping device for a tennis racket co prising two pairs of oppositely disposed clamping members arranged to clamp to the racket frame adjacent to and on opposite sides of a line drawn through the minor axis of the frame, pivotally mounted supporting pieces carrying each pairof clamping members, and connecting means for the supporting pieces carrying each pair, whereby movement of one clamping member thereof will impart a corresponding movement to the other member.
  • a clamping device for atennis racket comprising two pairs of oppositely disposed clamps arranged to engage the racket frame adjacent to and on opposite sides of a line drawn through the minor-axis of the racket, a U-shaped frame having its upright arms pivotally supported and being disposed to carry a pair of clamps on the upper free ends of the arms, and connecting means for the lower ends of the arms of the U-irame comprising inwardly directed links from the arms, a lever pivotally mounted at its midportion and connected to the inner ends of the links at its ends, and a segmental plate to receive the lever and hold it fixed in any of its adjusted positions.

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  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Physical Education & Sports Medicine (AREA)
  • Handcart (AREA)

Description

Dec. 5, 1933. 5 TAUBER ET AL 1,938,562
MEANS FOR STRINGING TENNIS RACKETS Original Filed March 22, 1929 qg l Tau b r INVENTORS vim ATTORNEY tit Patented Dec. 5, 1933 MEANS FOR STRINGING TENNIS RACKETS Siegfrid Tauber and Ladislaus Ih'schmann,
Vienna, Austria, assignors, by mesne assignments, to Dunlop Rubber Company Limited,
London, England Original application March 22, 1929, Serial No. 348,328, and in Austria. October 17, 1928. Divided and this application July 9, 1931.
Serial No. 549,671
2 Claims.
This invention relates to improvements in means for stringing of tennis rackets with strings and the present application is a divisional application of applicants copending application filed March 22, 1929, Serial No. 348,328.
A constructional example of the means employed is shown in the annexed drawing in which Fig. l is a vertical section on the line II of Fig. 2 and Fig. 2 shows the means in plan.
On the frame not shown of a device described in the application S. No. 348,328 are mounted two bars 1 and 2 in the longitudinal direction of the racket. To the undersides of the bars 1 and 2 are riveted two cross bars 3 and 4, to each of the ends of which two-armed levers 5, 6 and 7, 8 are respectively pivotally attached. On the end of the lever arm 6 (8) are pivotally mounted two tong- like levers 9, 10. The ends of these levers are formed into clamping jaws 12, 13 and covered with rubber for the protection of the frame of the racket. Between the other ends of the levers 9, 10 is arranged an eccentric 14 which can be rotated by means of the lever 15. To each of the lever arms 5, '7 is pivoted a connecting rod 20, 21 and these rods are pivotally connected to a two-armed lever 22 mounted to rock beneath the bar 3. This, ensures that the two levers 5, 6 and '7, 8 can only move in unison and each to the same extent. The lever 22 has at one end an extension 23, which carries a screw-threaded bolt 24. his bolt is guided in a slot 25 in a plate 26 mounted beneath the bar 3 and can be secured in any. position in said slot by means of a wing nut. As shown in Fig. 2, there are provided on each side of the apparatus two such clamping devices for the side portions of the frame 28, and the clamping jaws 12, i3 engage on both sides of the weakest portions of the frame 28. The clamping jaws 12-13 lie in a common horizontal plane which is the working plane. Advantageously there are in addition to the clamping jaws for the frame 28 of the racket also clamping jaws for the handle 30 of the racket as described in the application S. No. 348,328.
The frame of the racket is laid in the clamping device and by working the handle 15 the side portions of the frame 28 of the racket will be firmly clamped by the clamping jaws 12, 13.
By the connection of the clamping devices 12, 13 through the connecting rods 20, 21 and the lever 22 any possibility of unsymmetrical distortion of the frame is obviated. In order to prevent any bending of the side portions of the frame when tightening up the longitudinal strings, the locking device 24 is provided in the slot 25 in the plate 26.
What we claim is:
1. A clamping device for a tennis racket, co prising two pairs of oppositely disposed clamping members arranged to clamp to the racket frame adjacent to and on opposite sides of a line drawn through the minor axis of the frame, pivotally mounted supporting pieces carrying each pairof clamping members, and connecting means for the supporting pieces carrying each pair, whereby movement of one clamping member thereof will impart a corresponding movement to the other member.
2. A clamping device for atennis racket, comprising two pairs of oppositely disposed clamps arranged to engage the racket frame adjacent to and on opposite sides of a line drawn through the minor-axis of the racket, a U-shaped frame having its upright arms pivotally supported and being disposed to carry a pair of clamps on the upper free ends of the arms, and connecting means for the lower ends of the arms of the U-irame comprising inwardly directed links from the arms, a lever pivotally mounted at its midportion and connected to the inner ends of the links at its ends, and a segmental plate to receive the lever and hold it fixed in any of its adjusted positions.
SIEGFRID TAUBER. LADISLAUS FISCHMANN.
US549671A 1929-03-19 1931-07-09 Means for stringing tennis rackets Expired - Lifetime US1938562A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US549671A US1938562A (en) 1929-03-19 1931-07-09 Means for stringing tennis rackets

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US348328A US1943400A (en) 1928-10-17 1929-03-19 Means for stringing tennis rackets with strings
US549671A US1938562A (en) 1929-03-19 1931-07-09 Means for stringing tennis rackets

Publications (1)

Publication Number Publication Date
US1938562A true US1938562A (en) 1933-12-05

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Family Applications (1)

Application Number Title Priority Date Filing Date
US549671A Expired - Lifetime US1938562A (en) 1929-03-19 1931-07-09 Means for stringing tennis rackets

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4546977A (en) * 1984-06-14 1985-10-15 Ektelon Racquet stringing machine with improved racquet retaining standard

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4546977A (en) * 1984-06-14 1985-10-15 Ektelon Racquet stringing machine with improved racquet retaining standard
EP0165749A2 (en) * 1984-06-14 1985-12-27 Ektelon Racquet stringing retaining standard
EP0165749A3 (en) * 1984-06-14 1986-12-30 Ektelon Racquet stringing retaining standard

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