US2456023A

US2456023A - Tennis racket

Info

Publication number: US2456023A
Application number: US728647A
Authority: US
Inventors: Rosenbalm Isaac Lee
Original assignee: Individual
Current assignee: Individual
Priority date: 1947-02-14
Filing date: 1947-02-14
Publication date: 1948-12-14
Anticipated expiration: 1965-12-14

Description

Dec. 14, 1948. ROSENBALM I 2,456,023

TENNIS RACKET Filed Feb. 14, 1947 Patented Dec. 14, 1948 TJ'..:,I NN I', RACKET Isaac Lee Rosenbalm, Inglewood, Calif. Application February 14, 1947,"?Se l'i3l-Nll.728,647'

My invention relatesto tennis rackets and has among its salient objects'to provide a tennis racket th'e handle and frame' bf which is light metal, the "constructionand arrangementbeing such that the strings are yieldingly anchored in the loop portion of the frame whereby to have a resiliency which is'different from the anchorage of the'strings in a solid frame "in the usual manner; to provide in-a tennis racket a construction inwhich the ends ofthe'loopportion of the frame are anchored in the opposite sides of the handle and are secured in place therein, thus making an attractive, strong and economical racket frame; to provide in a racket of the character referred to means for tightening a segment of the loop and thus tightening a relatively large portion of the strings.

In order to explain my invention, I have shown the same on the accompanying sheet of drawings in which:

Figure 1 is a face view of a tennis racket embodying my invention;

Figure 2 is an edge view thereof;

Figure 3 is a cross sectional view taken on the line 3-3 of Fig. l;

Figure 4 is a detail in section, taken on the line 4-4 of Fig. 3;

Figure 5 is a cross sectional view taken on line 5-5 of Fig. 1;

Figure 6 is a similar view taken on line 6-6 of Fig. 1, said sectional views being enlarged for clearness;

Figure 7 is a fragmentary view. partly in section, at the juncture of the loop of the frame with the handle;

Figure 8 is a sectional detail on the line 8-8 of Fig. '7; and

Figure 9 shows howthe ends of the bridge portion of the loop, can be formed to fit into the opposite sides of the loopframe.

Referringnow in detail to the drawings, my

invention ashere shown is made of metal, sufficiently light and strong to give as good or better results and satisfaction as rackets made of wood.

The loop of the frame, designated I0 is of light tubular metal, having its two ends, designated II, II, inserted into the opposite sides of a handle, designated as a whole l2, with a rivet l3, through said ends and said handle, as shown, and as seen in the sectional view in Fig. 3. Said handle is shown with its opposite sides inturned for a portion of its length, as at M, I 4, so as to expose the ends of the loop at II, II, while the opposite sides of said handle, at right angles to the cut away sides, are shown formed with longi- 3 Claims. (01. 273-43 '3,5and6.

tudinally extending channels l2, l2 of shallow construction to give finish and also to provide convenient gripping portions for the hands of theplayer. The end of the handle canbe finished as desired, and is shown provided with a finishing cap 15. The cross sectional. form of the handle, withthe ends of the loop therein, is clearly illustrated in the sectiona1 views in Figs.

As. a means for attaching and anchoring the strings of the racket, I have provided a special anchoring head, designated l6, with a hole therethrough and having a neck portion 16', as seen in Fig. 8, also in Fig. '7. The strings are designated IT and are shown threaded through these heads IS, with the neck portions inserted into the tubular loop of the frame, as seen in Figs. '7 and 8, with a wire l8 threaded through said neck portions, within the tubular frame, as clearly illustrated. Thus said strings are anchored to the loop by means of this special anchoring head, and it is yieldingly held through the openings provided in the inner face of said loop, and slightly larger than the neck portion so as to permit a slight yielding movement of the head relative to the tubular loop of the racket.

A bridge or connection segment I9 is shown fitted between the opposite sides of the loop as they approach the handle, the opposite ends of said segment l9, being indicated in Fig, 9, and shown inserted through suitable slots 20, in the inner faces of the loop, as seen in Fig. 7. A' bolt 2|, having a threaded nut 22, is attached to said segment, as shown in Fig. 7, and at its other end attached to rivet l3.

The anchoring heads in the segment or bridge [9, are designated I6, l6" and the wire for holding them in place, is designated l8, as clearly indicated in the fragmentary view in Fig. '7.

The anchoring heads l6 and 16 are of such length to properly space the string, as will be clear, and they can be of such thickness as to lie well within the loop and not protrude at either side of the loop.

Thus I have provided an improved tennis racket which has all the advantages of. a wooden racket, and which is light, strong and capable of T claiini l. A tennis racket having its loop portion formed of tubular material with spaced openings around the inner side thereof, and means for anchoring strings thereto, said means including a series of heads with holes therethrough', each head having a neck portion inserted through one of said openings in the inner face of said tubular 100p, strings threaded through said heads across said 1oop-porti0n,--;said :neck portions eachhaving a hole therethrough, within the'tubular loop, and

an anchoring wire threaded through said neck portions within said tubular loop to yieldingly an= chor said anchoring means.

2. A tennis racket having its loop portion formed of tubular metal with holes through its inner face, means for anchoringstri-ngs :thereto; said means including a series of heads each h'aving a neck portion to be inserted loosely through' the holes in the innenface of said loop, said heads-:andzsaid neck-portions havingxholesstherea through, an; anchoringvwire through lth'ezholessin said'gneok portions withinrsaidytubular; loopzpore tion, .fon yieldingly; anc-horing;.:saidyheadstozsaid' loop,-.; and; strings threadedi through; said" headsi aorosssaidrloopdn opposite -=directions;said heads beingespaced:substantiallwequal :tostherlength: of each and: spacing; said stringsgth'reade'd theree through, substantially as illustrated.

3'. 'Ar tennis racketii having:- a loop: portion formed of tubular metal with its ends converging and extending a distance in substantially parallel relationship, a handle into which said ends telescope for a portion of the length thereof, means securing said ends and said handle together, said handle having opposite sides open to expose said loop ends therein, means for anchoring strings across said loop and including a series of heads having neck portions inserted into said; loop 'portion', said :strings being; threaded through said heads, and-'"'an' anchoring wire through the neck portions, within said loop portion, for anchorin said heads to said loop portionzlzsubstantially in the manner indicated.

ISAAC LEE ROSENBALM.

REFERENCES CITED The following references are of record in the file of this patent:

UNITEDWSTATESJ PATENTS GreatrBritain Feb: 12; 1925;