US1018316A - Fender. - Google Patents

Description

J. M. W. HEITMANN.

FENDER. APPLIOATION FILED JUNE 27, 1908.

1,018,316. Q Patented Feb.20, 1912.

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JOI-IANNES MARTIN WILHELM HEITMANN, 0F HAMBURG, GERMANY.

FENDER.

owers.

Specification of Letters 2atent.

Patented Feb. 20, 1912.

Application filed June 27, 1908. Serial No. 440,765.

To all whom it may concern:

Be it known that I, JOIIANNES MARTIN IVILIIELM I-Inrraranx, a subject of the German Emperor, residing at Antonistrasse 12, Hamburg, Germany, have invented certain new and useful Improvements in Fenders, of which the following is a specification.

The object of the invention is to provide a tender which, owing to the peculiar mannor in which it is braided, has an exceptional amount of resilience and durability.

In making the fenders heretofore employed upon shipboard, it is customary to place upon a core a number of layers of network, each row of the network having meshes looped into the preceding row.

The construction just mentioned has the disadvantage that the meshes employed must necessarily be very small, and cone sequent'ly break easily, which diminishes the durability of the fender. Moreover, the construction just mentioned gives to the fender very little elasticity, for the reason that portions of the meshes are liable to shift lengthwise of the fender when they are pressed together.

In myinvention I employ a flexible winding member of spiral form which may consist of rods, reeds, canes or strips, and

around this I' twine a flexible member formed into meshes and connecting together the differentloops of the spiral winding member.

My construction increases the resilience of the tender, for the reason that the flexible member used for binding together the various loops of the winding member has exceptional resilience toward the circumference only of the tender, and is not liable to be shifted lengthwise as in the old construcion.

Again, my fender is much more durable, for the reason that the flexible member used for binding together the various loops of the winding member is progressively larger from the center outward, the flexible winding member being of smaller diameter at the center, from which the work of making the tender begins. Hence, in my construction the flexible binding member is not bent so abruptly as in other constructions, and therefore cannot break as readily.

Reference is to be had to the accompanying drawing forming a part of this specification in which like characters of reference indicate corresponding parts in both views, and in which Figure 1 is a plan view of a partially completed fender made in accordance with my invention; and Fig. 2 is a side elevation of the same partly broken away.

At a is the core which is made of a suitable porous material and which may, .-ac cording to the purpose for which it is .used, be spherical, oval or sausage shaped. Secured to the core a is a chain, cable or the like, provided with a portion b to enable the tender to be secured to a chain, rope or cable in the usual manner.

A flexible winding member 0 is bent into spiral form and constitutes a considerable portion of the'fender covering. This flexible winding member is composite in structure, being made of a number of reeds, canes, ropes or the like and so formed that its end portions are of lesser diameter than its mid dle portion. This is conveniently done by properly distributing the canes, ropes, cords or the like, ofwhich it is composed. In the particular instance shown, the flexible winding member 0' is made of separate canes, the end of the flexible winding mem her being simply a continuation of one of these canes.

At a point a little removed from the end the flexible winding member comprises two canes; still farther out -itcomprises three canes, and so on. At (Z is a flexible binding member. In the particular instance shown this is a long piece of cane braiding which is passed around the flexible winding member 0 and formed into loops 6, and after being passed through each loop is passed through the adjacent loop of the preceding winding of the flexible binding member. After the core a has received a complete covering of network, made in the manner justdescribed, the operation is repeated, beginning at the oppositeend of thecore, and this is continued until the fender has reached the desired thickness.

I find it convenient to begin the spiral winding of the flexible winding member with only one or two canes, switches, or other equivalent, and afterward to add as many as desired, so that as the tender in-- creases in size, the flexible winding member 0 contains three or more switches, canes or rods, as the case may be, according to the material or" which it is composed. The

flexible binding member d may in like manner consist of a single switch or a number of switches tw sted together. Hard hemp,

rope, Wire or soft Wire cable may be em- Wise diameter. This insures great durability in the fender, because the meshes must be larger than it is expedient to make them with the old style of network.

its raw material for making the fender, there may be used either cane or switches of ratan Willow, or other flexible growths. It is also practicable to make the flexible Winding member 0 of several corded hemp ropes, or the like.

Having thus described my invention, What it claim as new and desire to secure by Le ters Patent is 1. In a tender, the combination of a core, a flexible Winding member disposed spirally about the same, and a flexible binding member Wound spirally. around said Winding member and formed into loops, the loops around one convolution of said winding member extending through the loops around another convolut on of said Winding member.

2. In a. tender, the combination oi. a core, a flexible Winding member disposed spirally about the same, and a binding member Wound spirally around said Winding memher and formed into loops, each loop extending around a ortion of said Winding member and throng an adjacent loop of another portion of said binding member.

noise to 3. A iendercomprising a core, a Winding member disposed thereupon, a portion of said Win-ding member being thicker than fanother portion thereof, said winding member being formed intdsuccessive convolutions 4. A fender comprising a core having sue,-

cessive portions of gradually increasing diameter, a winding member disposed spirally around said core and having convolutions of small diameter engaging a portion of small diameter of said core, portions of larger diameter of saidbyvinding member thus being disposed upon portions otgreater diameter of said core, and means for securing together the several adjacent convolutions of said Winding member.

5. A fender comprising a core having generally an oval form, a Winding member mounted spirally upon said core, the general diameter of said Winding member, measured diametrically through said core, being progressively 'greaterat the middle of said core than at the ends thereof, the dismote: of the winding member, measured diametrically through said windin member,'

being also greater upon that portion of the Winding member encircling the middle of said core, and means for securing different portions of said Winding member substantially in predetermined positions relatively to each other.

In testimony that I claim the foregoing as my invention I have signed my name in presence of two subscribing Witnesses.

JOHANNES MARTIN WILHELM HEITMANN; Vitnesses:

Hose Brenner/r, I Luowio SiionRMAN.

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