US1165453A - Brake-shoe. - Google Patents

Description

G. H. SARGENT.

BRAKE SHOE.

APPLICATION FILED OCT. 16, 1915.

Patented Dec. 28, I915.

, of contact with the railand when the wear GEORGE H. SARGENT, OF- CHICAGO, ILLINOIs.

BRAKE-SHOE.

Specification of Letters Patent.

Patented Dec. 28, 1915.

' Application filed October 16, 1915. Serial No. 56,186.

To all whom it may concern Be it known that I, Gnonon H. SARGENT, a citizen of the llnited States. and resident of Chicago, in the county of Cook and State of Illinois. have invented certainnew and useful Improvements in BrakeShoes, of which the following is a specification.

My invention relates to brake shoes, and has particular reference to a truing or dressing brake shoe.

It is well known that after continued service, the wheels employed under cars or locomotives becom. worn at the direct point becomes pronounced such wheels are a menace to tratiic, being likely to cause accidents. A common remedy is to remove the wheel and turn the thread to the proper contour. It is also common to employ dressing shoes. z 6., shoes having inserts of hard material, such as corundum, this grinding material serving to remove the highest points of the wheel, with the idea of restoring the wheel to its proper contour. It has been found. however. that such shoes do not act in this manner; on the contrary, the shoes themselves will become worn at the high points in the wheel, and the wheel will not at any time be restored to its original contour.

I have conceived the idea of providing a dressing shoe which will have the usual corundum insert. which insert shall be movable across the face of the shoe to provide differently disposed wearing surfaces. to the end that the wheel may be ground to the proper degree without the possibility of a change in the contour of the shoe at the same time the wheel is being ground.

The invention will be more readily understood by reference to the accompanying drawings, -wherein- Figure 1 is a face View of a brake shoe constructed in accordance with my invention; Fig. 2 is a longitudinal sectional view through the construction shown in Fig. 1;

Fig. 3 is a section on the line 3-3 of Fig.'

2: Fig. 4 is a perspective view of one of the inserts in the face of the shoe, and Fig. 5 is a perspective view of one of the inserts employed in the thread of the shoe.

As indicated in the drawings, the shoe. which is indicated by the numeral 10, may be of the usual cast metal construction and is provided in its face and located transversely thereof with recesses 11, these reas indicated by the numeral 14. Inasmuch as this may be more readily handled and adpisted when confined, I have located the grinding material within a cup or container 15, of pressed or cast metal. the sides of' which are tapered to correspond to the taper of the recesses 11 in the face of the shoe. It will be noted that these grinding elements are of less length than the width of the shoe, as best shown in Fig. 1, and, therefore, the same may be located in different transverse positions on the face of the shoe. This enables the use of the dressing shoe 1n such manner that the wheel may be ground at any point. When first set on a worm wheel the grinding elements will be located at the high point of the wheel. However, as wear takes place between the shoe and the wheel, the grinding element will tend to conform somewhat to the uneven contour of the-wheel. At that point the grinding elements are shifted trans versely, this being accomplished by loosening the containers 15 from the recesses, a notch 16 being provided in the lower edge of the container within which a tool may be inserted to aid in removing the device from the recess.

The grinding means for the flange are similar in construction to those for the tread of the wheel. The grinding material 17 is contained within a cup 18. which is fitted within the recess 13. In this instance the recess 13 extends entirely through the flange portion 12 of the shoe, and the grinding element may be driven out from the back of the shoe. I

By the use of the construction described, I am enabled to provide a dressing shoe which is etlicient in all conditions of wear of the shoe. The adjustment to secure the proper grinding action may be made very simply without necessarily removing the shoe from its holding means. I urthermore, the cost of construction is slight. and, there fore, renewal expense is slight.

' The grinding devices 17, which a, a-

. plied jto ;the,- fi ange, are not adapted for lateral adjustment, but it is intended that,

' -:the grinding material be disposed in container in such manner that the con- .tainers may be shifted in the sockets to present a wearing surface at another point, or

' that the devices may bechanged to provide others in which the grinding shall take I 10 7 place at a different point. I claim:

In a brake shoe of'the class described, the combination .of a shoe having a plurality of slots therein "and grinding elements seated in said slots, said grindingelements being of a length less than the width of the shoe and being movable in said slots, substantially as described.

2; In a brake slice, the combination of a body portion. having "a plurality of transverse slots "thereinand grinding devices re- .movably seated in said slots and adjustable across. the face of said shoe, substantially as described.

i 3. In a brake shoe,,the combination of a body portion having a plurality of transverse, vertically tapered slots therein, and grinding devices located in said slots and transversely adjustable across the face of said shoe, substantially as described.

4. In a device of the class described, the

"combination of a shoe having a plurality of movable longitudinally of the slots and I,

across the face of the shoe, and grinding devices located in the apertures in the flange portion of said shoe, substantially as described. a t Y .6. In a brake shoe, the combination of'a flange portion having a plurality of recesses therein and removable and adjustable grinding devices mounted in said recesses, sub stantially as described,

Signed at Chicago, Illinois, this 14th day of October, 1915.

GEORGE H. SARGENT. Witnesses CHAS. T. MURRAY, T. D. BUTLER.

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