DE1234251B - Hiking protection clamp for rails - Google Patents

Description

GERMAN #m PATENT OFFICE

EDITORIAL

German KL: 19 a - 13/02

Number: 1234 251

File number: P 29860 V / 19 a

J 234 251 filing date: July 19, 1962

Opened on: February 16, 1967

The invention relates to a hiking protection clamp for rails from a profile bar that has in its central part a support surface for the rail foot and on one of it Rod end a hook for grasping one side of the rail foot and at the other end of the rod a nose are designed to rest against the opposite edge of the rail foot and that in the transition area of the hook into the support surface for the rail foot with one of the rod material pressed out stop shoulder is provided for the rail foot edge lying on the hook side.

According to U.S. Patent 1559,589 published in 1925, such walking protection clamps are provided initially made of rod material with a rectangular cross-section. With these well-known The stop shoulder runs from one side of the rod to the other by. It was also known that the contour curves should be continuous in order to maintain strength and elasticity and let it run gradually so that there were no sharp or abrupt bends.

In later years, according to Austrian patent specification 186 662 issued in 1956 to achieve a greater strength of the hiking protection clamp proved to be useful, this off to produce a profile bar material with a T-shaped cross-section and to arrange it so that the common The top of the two T-flanges forms the support surface for the rail foot. The stop shoulder has been pushed out of the two flanges of the T-profile so that they consist of two Consists of sections that are separated by a central free space. Trials and evaluation of Many practical experiences have now shown that it is worth the effort, even with hiking protection clamps to work out a continuous stop shoulder from T-profile bar material. In detail is for this purpose according to the invention in a hiking protection clamp of the type specified the unification of the features known from the Austrian and the USA patent specification provided, that

a) the profile bar has a T-shaped cross section and is arranged so that the common The top of the two T-flanges forms the support surface for the rail foot, and

b) the stop shoulder runs through from one side of the profile rod to the other and material flow lines has, which continuously connect to the material flow lines of the adjacent rod material and outside of a contour be-Wandererschutzklemme for rails

Applicant:

Poor & Company, Chicago, JH. (V. St. A.)
Representative:

Dr.-Ing. F. Wuesthoff, Dipl.-Ing. G. Pulse
and Dr. E. Frhr. v. Pechmann, patent attorneys,
Munich 90, Schweigerstr. 2

Named as inventor:

Max K. Ruppert, Chicago, JlL (V. St A.)

Claimed priority:

V. St of America of February 7, 1962 (171679)

are bordered, which merges from the stop shoulder both into the hook and into the support surface for the rail foot in an arc that is concave from the outside.
According to the invention, material from the central web between the two T-flanges is also carefully worked out to produce the continuous stop shoulder so that steady material flow lines are maintained and dislocations do not occur as when pressing out individual shoulders, which lead to internal stresses and a premature tendency to break.

The invention is explained in more detail below with reference to a schematic drawing of an embodiment.

The drawing shows a perspective view of a hiking protection clamp according to the invention with continuous stop shoulder.

The hiking protection clamp is made from a profile bar A with a T-shaped cross-section with the central web 1 and the two flanges 2 . The continuous stop shoulder S is formed between two circular arcs so that there is no risk of a sudden change in the course of the material flow lines in the highly stressed part of the traveling protection clamp, ie at the junction between the central web and the flanges.

This training is obtained in a press tool through a continuous flow process. The steady one The course of the material flow lines is of particular importance

709 509/103

Claims (1)

meaning when the hook is spread slightly by the wedge force, which occurs when the hiking protection clamp is struck occur on the rail; because then the material has to be attached to the connecting parts between the hook and the part lying under the rail foot most of the occurring here Absorb stress. Claim: Hiking protection clamp for rails from a profile bar, which in its middle part a Has support surface for the rail foot and a hook at one end of the rod to embrace one side of the rail foot and at the other end of the rod a nose for Apply to the opposite edge of the rail foot and are formed in the transition area of the hook into the support surface for the rail foot with one pressed out of the rod material Provide stop shoulder for the rail foot edge on the hook side is characterized by the combination of the following features: a) the profile bar (A) has a T-shaped cross-section and is arranged in such a way that the common upper side of the two T-flanges (2) forms the support surface for the rail foot, b) the stop shoulder (S) runs from one side of the profile rod to the other and has material flow lines that continuously connect to the material flow lines of the adjacent rod material and are bounded on the outside by an outline that extends from the stop shoulder both in the hook and in the support surface for the rail foot merges into an arc that is concave from the outside. Considered publications:
Austrian Patent No. 186 662;
U.S. Patent Nos. 1559589, 2171819. 1 sheet of drawings 709 509/103 2.67 © BundesdruckereiBerlin