Chain – staple – and horseshoe making – Horseshoe making – Blanks and bars
Patent
1996-11-01
1998-03-17
Jones, David
Chain, staple, and horseshoe making
Horseshoe making
Blanks and bars
59 36, 168 4, 168 11, A01L 100, B21K 1502
Patent
active
057273766
DESCRIPTION:
BRIEF SUMMARY
TECHNICAL FIELD OF THE INVENTION
In a first aspect, the present invention relates to a method for the production of horseshoes from an initial blank in the form of a plane plate the length and width of which are many times larger than its thickness and which is composed of at least two part-plates of differently hard materials which are joined to each other by explosion welding, the harder material forming an external lamina and the softer material an internal lamina in the finished, substantially U-shaped shoe.
PRIOR ART
From SE 8603894-0 it is previously known to produce horseshoes from an initial blank composed of two part bodies of different metals which are intimately joined to each other by explosion welding. According to an embodiment described in said patent, these part bodies consist of two tubes which are concentrically arranged in each other. According to another embodiment, the part bodies consist of metal plates which together form a plate body that is bent to a groove or tube shape, before the production of the individual horseshoes is initiated. In both cases, this production is effected by cutting or sawing the groove- or tube-shaped blank in transverse cuts, whose internal axial distances correspond to the desired thickness of the horseshoe. Advantageously, metals used for the composite unit may be steel and aluminum, the steel forming an external, thin and hard lamina with good wear resistance and good gripping properties, while the internally located aluminum material forms a wider and softer lamina which confers a low weight to the shoe in its entirety by the small density of the material. Thus, the advantages of the ready shoe are that it has both a low total weight and a long life, at the same time as the joint effected by explosion welding between the two different laminae gives a very reliable connection of the laminae, thereby avoiding any risk of a delamination.
However, a serious disadvantage of the manufacturing method described in SE 8603894-0 is that the individual shoes are produced by a section-wise separation of the end portions of a groove- or tube-shaped blank, whose cross-sectional shape substantially corresponds to the contour form of the prospective shoe. For most farriers, e.g. those being active at trotting and riding stables, there is a necessity of being able to shoe horses with most varying hoof sizes. Thus, in practice no less than about twenty different shoe sizes exist, all the way from shoes for the smallest breeds to shoes for the biggest breeds, the largest shoe being 4 to 5 times larger than the smallest one (a pony shoe may have a bow length from end to end smaller than 15 cm, while the corresponding bow length of the largest shoe may amount to a size of 50 cm). The consumption of different shoes for both one and the same, and for different farriers, may vary quite considerably over time. Periodically, shoes of a certain size may be produced in large amounts, while at the same time other sizes are not at all requested, or only to a small degree. During other periods the circumstances may be reversed. These fluctuations, which are impossible to predict for the farrier, cause storage problems that are difficult to master, irrespective of whether the groove or tube blank is immediately divided into a maximum number of shoes (e.g., 50 to 100 shoes per blank) or is stored in order to enable a separation of shoes one by one, as need emerges. In order to satisfy the requirements of different farriers, one has to store about twenty different types of voluminous blanks and/or sets of shoes, this being both costly and bulky. A further disadvantage of especially the groove-shaped blank, is that it requires rather strong and thus expensive bending machines. Moreover, both longer and shorter transports of groove-shaped and tube-shaped blanks from a central producer to geographically scattered buyers are rather costly because of the fact that the major part of the volume of the blanks consists of an empty cavity.
OBJECTS AND CHARACTERISTICS OF THE INVENTION
In a
REFERENCES:
patent: 970267 (1910-09-01), Schwartz
patent: 1468196 (1923-09-01), Curzon
patent: 2679906 (1954-06-01), McGraw et al.
patent: 4760885 (1988-08-01), Benning
patent: 5353878 (1994-10-01), Lee
Jones David
MCL i Avesta AB
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