US1309297A - Sylvania - Google Patents

Description

5. H. MILLIKEN. DRAFT Y OKE. APPLICATION FILED wlvsx. I917. 1,309,297. Patented July 8, 1919.

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DRAFT YOKE.

APPLICATIONHLED JULYHI. 1917.

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. UNITED STATES PATENT OFFICE.

ISAAC MILLIKEN, 0F ASPINWALL, PENNSYLVANIA, ASSIG-NOR TO THE MCCONWAY & TORLEY COMPANY, OF PITTSBURGH, PENNSYLVANIA, A CORPORATION OF PENN- sY vANLA.

Specification ofLetters Patent.

DBAFT-YOKE.

Patented July 8, 1919.

Application filed July 31, 1917. Serial No. 183,762.

Aspinwall. in the county of Allegheny and State of Pennsylvania, have invented certain new and useful Improvements in Draft- Yokes; and I do hereby declare the following to be a full. clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

My invention relates to the construction of draft yokes forming an element of railway draft rigging. The object of the invention is to produce a simple form of draft yoke which is strong, reliable and etiicient in service, which may be readily manufactured, and in which casting strains or similar defects are unlikely to occur. stated, this object is'accomplished by forming the yoke with spaced arms which are connected near their forwardends by a transversely extending upright member having on its forward face a curved segmental bearing surface that is adapted to cooperate with the correspondingly curved butt of a car coupler (not shown), a pair of parallel s de walls which are spaced laterally from the curved bearing and extend forwardly from the upright member being also employed to connect the forward portions of the yoke arms. Such a construction embodies the principal features of the invention.

In the drawings illustrating the best mode in which I contemplate applying the principle of my invention. the scope whereof is pointed out in the claims,

Figure 1 is a plan view of a draft yoke embodying the invention. Fig. 2 is a view. partly in vertical longitudinal section and partly in side elevation, of the construction illustrated in Fig. 1.

Fig. 3 is a section on the line 3-3. Fig. 2.

Fig. 4 is a plan view of another form of draft yoke embodying the invention.

Fig. 5 is aside elevation of the-construction shown in Fig. 4.

Fig. 6 1s a sectional view, taken on'the line 65-65. Fig. 5.

In the construction illustrated in Figs. 1. 2 and 3 of'the drawings. 1. 1 are the yoke arms between which the well known arrangementof springs and followers or other cushioning unit (not shown) may be interposed. Near their forward ends the yoke Generall y arms 1 are united by an upright transversely extending member 2 the rear face 3 of which is adapted to engage the forward follower of the draft rigging in the customary manner. The upright member 2 is provided at the center of its forward face with a curved segmental bearing surface with which the butt of a car coupler (not shown) may. engage. In the special form of construction shown in' the drawings this segmental bear ing is separated into two parts 4, 4 by a lug 5 which projects forwardly from the upright member 2. The lug 5 is provided with a perforation 6 adapted to receive a pivot side walls 8 which respectively connect ad jacent portions of the yoke arms 1. These side walls. which are preferably parallel, are spaced outwardly from the curved segmental bearing surface 4 so as to allow the coupler to swing laterally. )Vhen the rear face 3 of the upright member 2 is flat from side to side of the yoke, the space between each side wall 8 and the adjacent end of curved bearing 4 is preferably recessed or hollowed out, as indicated at 9. thus decreasing the mass of metal at this point. The forward ends of the yoke arms 1 are rounded and provided with perforations 10 to form lugs 11 which. like the centrally dis posed lug 5, are adapted to receive the tail pin for pivotally attaching a car coupler to the draft yoke.

Except as hereinafter pointed out, the construction illustrated inFigs. 4. 5 and 6 does not differ from that shown in Figs. 1, 2 and 3 and heretofore described. It will, thereside of the upright member 2 are spaced inwardly from the side walls 8 connecting the outer ends of the yoke arms, the forward surfaces of the yoke which intervene between these parts being, as shown at 9*, preferably flat. The middle lug 5 and the outer lugs 11 of this form of my draft yoke are preferably respectively identical with the lugs 5 and 11 of the construction shown in Figs. 1, 2 and 3.

I claim:

1. A draft yoke for railway draft rigging, comprising a pair of spaced arms, a transversely extending member connecting said arms adjacent the forward portions thereof, and a pair of side walls connected to and extending forwardly from said transversely extending member, said walls also being connected to the adjacent portions of the said yoke arms, and the said transversely extending member being provided on its forward face with a curved segmental bearing surface spaced from the said side walls to'reduce the mass of metal at the junctions of said transversely extending member and side walls.

2. A draft yoke for railway draft riggin 1 ,soaaev comprising a pair of spaced arms, an upright member connectingthe said arms adacent the forward ends hereof, said member being provided on its forward face with a plurality of curved bearing surfaces separated by a forwardly extend ng lug, a pair of parallel side walls extending forwardly from the said upright member and connected to the adjacent portions of the yoke arms, the said bearing surfaces being spaced from the said. side walls to reduce the mass of metal at the junctions of said upright member and said side walls.

3. A draft yoke for railway draft rigging,

comprising a pair of spaced arms, and an upright transversely extending member uniting said arms adjacent the forward ends thereof, said upright member having on its forward face a curved bearing surface and having upon its rear face a centrally disposed follower engaging surface interposed between a. plurality of laterally disposed follower engaging surfaces, and having intervening depressions between said follower engaging surfaces.

In testimony whereof I affix my signature.

ISAAC H. MILLIKEN.

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