US2271173A - Method of making archery bowstrings - Google Patents

Description

Jan. 27, 1942. N. B. LAY

METHOD OF MAKING ARCHERY BOWSTRINGS Filed May 20, 1940 Inventor Attorney Patented Jan. 27, 1942 METHOD 'OF MAKING ARCHERY BOWSTRENGS Nathaniel B. Lay, Pine Bluff, Ark? Application May 20, 1940, Serial No. 336,216

6 Claims.

in a manner to provide uniform tension in the individual strands.

Another object is to provide a reinforced loop construction at the ends of the bowstring for attaching to the ends of the bow.

A further object is to provide a novel method of constructing the bowstring whereby the strength thereof is increased without materially increasing its weight and which at the same time is strong and durable, relatively inexpensive to manufacture and otherwise well adapted for the purposes for which it is intended.

Other objects and advantages of my invention will become apparent to the reader of the following specification taken in connection with the accompanying drawing wherein Figure 1 is a plan view showing the strands of thread attached to supporting hooks in accordance with the first step in the method of constructing the bowstring.

Figure 2 is a similar view showing the reinforcing padding placed thereon.

Figure 3 is a similar view showing the thread wrapping for the padding.

Figure 4 is a similar view with the reinforced portions in position for forming the end loops, and.

Figure 5 is an enlarged detail of one finished end of the bowstring.

Referring now to the drawing in detail the numerals 55 designate a pair of spaced hooks in axial alignment and suitably mounted on a conventional structure or mechanism (not shown) for oppositely rotating the hooks. A plurality of threads or strands 6 of suitable material for making archery bowstrings are placed over the hooks and the ends tied by a conventional knot 1 to form a substantially taut loop of the threads.

The loop is then adjusted on the hooks to bring the knot substantially equi-distantly between the hooks and the knot, as well as a portion of the opposite flight of the loop immediately adjacent the knot, are provided with short strands or threads 8 of similar material constituting swatches tied as at 9 to the strands of the loop, with the strands of the swatches parallel to the strands of the loop to produce a padding.

The padding is then covered with a quick drying rubber latex solution l0 which is rolled into securing the strands of the padding in position.

The coating of latex and the padding are then covered with a thread wrapping H, the'end of the wrapping being left free and. the loop is then again adjusted on the hooks to bring the padded portions into engagement with the hooks, as shown in Figure 4.

The hooks are oppositely rotated causing the twisting together of th unpadded intermediate portions of the flights of the loop as shown at l2 and formin smaller loops l3 of the padded portions at each end of the twisted strand.

The loose ends of the wrapping threads II are then wrapped over the junction of the ends of the padded portions and the adjacent twisted portion as shown at I 4 to finish the small end loops and to retain the twisted portion against untwisting movement.

Itis believed the details of construction and manner of use of the device will bereadily understood from the foregoing without further de-' tailed explanation.

What I claim is: I

1. A method of making archery bowstrings comprising connecting the ends of a strand of material to form a loop, padding the strand at predetermined spaced portions, and twisting the unpadded portions of the loop together to form a pair of loops at the ends of the first-named loop.

2. A method of making archery bowstrings comprising connecting the ends of a strand of material to form a loop, padding the strand at predetermined spaced portions, closing the unpadded portion of the loop to form a single strand and connecting the ends of each padded section together to form a loop at each end of saidsingle strand.

3. A method of making archery bowstrings comprising connecting the ends of a strand of material to form a loop, padding the strand at predetermined spaced portions, applying a thread wrapping to said padded portions, twisting the unpadded portions of the loop together to form a single strand, said twisting extending into the ends of the padded portions to connect the same and form loops at the ends of said single strand, and continuing said wrapping inwardly from said end loops partly over said twisted portion.

4. A method of making archery bowstrings I comprising connecting the ends of a strand of material to form a loop, padding the strand at predetermined spaced portions, applying a thread wrapping to said padded portions, twistthe padding to embed the strands therein and ing the unpadded portions of the loop together T Q'F to form a single strand, said twisting extending into the ends of the padded portions to connect the same and form loops at the ends of said single strand, and continuing said wrapping inwardly at the junction of said end loops with the twisted portion.

5. A method of making archery bowstrings comprising connecting the ends of a strand of thread together to form a loop, placing thread swatches at predetermined spaced portions of the loop, applying an elastic coating to the swatches, covering the coating with a thread wrapping, twisting the portions of the loop between the swatches together to form a single strand, and leaving the ends untwisted to form smaller loops of the wrapped portions.

6. A method of making archery bowstrings comprising connecting the ends of a strand of thread together to form a loop, placing thread swatches at predetermined spaced portions of the loop, applying an elastic coating to the swatches, covering the coating with a thread wrapping, twisting the portions of the loop between the swatches together to form a single strand, and leaving the ends untwisted to form smaller loops of the wrapped portions, and continuing said wrapping inwardly from said smaller loops partly over said twisted portions.

NATHANIEL B. LAY.

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