US662016A - Railway-switch. - Google Patents

Description

No. 662,0l6. Patented Nov. 20, I900.

H. OSHEA.

RAILWAY SWlTCH.

(Application filed Dec. 26, 1899.)

(N 0 M odal WITNESSES: j INVEHTDH ,mmwi j 3403M, 772 6 1M! I .Qawwfiu M ATTORNEY.

.ATENT FFICE.

HENRY OSI'IEA, OF JOHNSTOWN, PENNSYLVANIA, ASSIGNOR TO THE LORAIN STEEL COMPANY, OF PENNSYLVANIA.

RAILWAY-SWITCH.

SPECIFICATION forming part of Letters Patent N 0. 662,016, dated November 20, 1900.

Application filed December 28. 1899. serial No. 741,807. (No model.)

To all whom, it may concern:

Be it k nown that LHENRY OSHEA,of Johnstown, in the county of Oambria and State of Pennsylvania, have invented a new and useful Improvement in Railway-Switches, of which the following is a full, clear, and exact description, reference being had to the accompanying drawings, which form a part of this specification.

My invention relates to railway-switches, and more particularly to switches of that type wherein there is a tongue or point swiveled to the foundation structure at its heel end by a depending pin or pintle.

The object of the invention is mainly to provide an improved construction and seating of the pin or pintle by which looseness due to the wear on the pin may be largely prevented, thereby reducing the tendency of the tongue or point to shift under the action of passing car-wheels.

With this object in view myinvention consists in a switch tongue or point having-a pin or piutle of frusto-conical or tapered form adapted to seat in a correspondingly-tapered socket or bearing, so that any wear which takes place between the bearing-surfacesof the pin and socket will to a considerable extent be compensated for by a deeper seating of the pin in the socket, thus maintaining a proper bearing fit between the parts.

The invention also consists in the novel construction and combination of parts, all as herein described, and pointed out in the appended claims, reference being bad to the accom panying drawings, in which Figure 1 is a plan view of a tongue-switch of the type described. Fig. 2 is a vertical longitudinal section of a portion of the same on a larger scale, and Fig. 3 is a side elevation of the socket or bearing in which the tongue-pin is seated.

Although my invention is applicable to other constructions, I prefer to employ it in connection with a tongue-switch of the construction described and claimed in the patent to A. J. Moxham, No. 520,694 of May 29, 1894:, in which the foundation structure is provided with a sleeve or bushing to receive the tongue or pintle, said sleeve or bushing being secured by means of some suitable reformed with corresponding steps 0.

taining material placed around and between it and the walls of the pocket in which it is seated.

In the drawings the letter A designates the foundation structure or body of the switch, and B the movable tongue pivoted on the pin or pintle C.

D is a bushing or sleeve, preferably of caststeel, which is seated in a pocket in the structure A, and E is retaining material, such as spelter or brimstone, which is poured around the bushing or sleeve.

The pin Ois preferably made separate from the tongue B, in which it is secured by a shank or stud portion 1). The bearing portion of the pin is made in the form of a frustum of a cone inverted, and the sleeve or bushing D is bored out with a corresponding taper to form a neat bearing fit therefor.

19' is a fillet which joins the bearing portion of the pin to the stud or shank b.

12 indicates a slight clearance between the bushing and the under side of the switchtongue.

The exterior of the bushing is formed with a series of stepped portions 01, each of which is of increasing diameter from the bottom upward and terminates in a horizontal face 01', which forms a ledge or shoulder around the bushing. The walls of the seating-pocket are In the wedge-shaped annular spaces thus formed is poured the retaining material E. Inasmuch as the spaces are considerably wider at the bottom than at the top, it will be readily seen that the bushing is securely retained in place. It will also be readily seen that considerable wear may occur between the pin and the bushing without destroying the bearing fit between the two. The diameter of the upper end of the bearing portion of the pin may be considerably larger than the diameter of the straight pins heretofore used without increasing the exterior diameter of the sleeve or bushing, thus considerably increasing the area of bearing-surface. It will also be observed that the upper end ofthe body of the pin forms a broad shoulder whose peripheral edge is coincident with the lower peripheral edge of the rounded heel portion of the tongue, the latter being thereby guarded against I claim, and desire to secure by Letters Patent, is-

l. The combination with a switch tongue or point, and a seating or foundation structure therefor having a bushing formed with a tapered or frusto'conical bearing-socket, of a pin or pintle of corresponding form fitting the said socket, and secured in said tongue or point by a reduced cylindric shank at its upper end, said pin having an initial projection at its upper end above the top of said socket.

2. In a tongue-switcl1,the combination with a foundation structure, and a sleeve or bushing secured therein, of a switch-tongue having a tapered or frusto-conical pin secured in its heel portion and bearing in the said bushing, the upper end of the body of said pin forming a broad shoulder extending to the rear end of the tongue and supporting its heel against grinding contact with its seat.

3. In a switch-piece, the combination with the foundation structure or body formed with a pocket therein, of a sleeve or bushing seated in said pocket, and retaining material between the sleeve or bushing and the walls of the pocket, said walls and the exterior surface of the bushing having corresponding op posite and oppositely-directed steps or oifsets with intermediate tapered portions forming spaces of upwardly-decreasing width to receive said retaining material, substantially as described.

In testimony whereof I have afiixed my signature in presence of two witnesses.

HENRY OSHEA.

Witnesses:

MYRTLE E. SHARPE, H. W. SMITH.

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