US430738A - John joseph lappin - Google Patents

Description

(No Model.)

J. J. LAPPIN.

GAR COUPLING DRAW HEAD.

No. 430,738. Patented June 24, 1890.

- I/wmm UNITED STATES PATENT OFFICE,

JOHN JOSEPH LAPPIN, OF TORONTO, ONTARIO, CANADA.

CAR-COUPLING DRAW-HEAD.

SPECIFICATION forming part of Letters Patent No. 430,738, dated June 24, 1890.

Application filed May 13, 1889. Serial No. 310,681. (No model.)

To all whom it may concern:

Be it known that I, JOHN JOSEPH LAPPIN, of the city of Toronto, in the county of York, and in the Province of Ontario, Canada, have invented certain new and useful Improvements in Draw-Heads for Railway-Oars; and I do hereby declare that the following is a full, clear, and exact description of the same.

My invention relates to draw-heads now in use for the connection and making up of trains of cars, and are provided with an apparatus called automatic or self-actin g couplers, this invention being an improvement on such draw-heads, and especially upon a draw-head having a coupler, for which I obtained a patent for the Dominion of Canada, No. 3,634, and bearing date July 16, 1874, and also a patent for the United States, No. 156,889, and bearing date November 17, 1874.

In the accompanying drawings, Figure 1 is a side view of myimproved draw-head. Fig. 2 is a transverse sectional elevation of the same. Fig. 3 is a side view of a longitudinal section of the same. Aportion of the inner end is removed as unnecessary in this specification.

Similar letters of reference indicate similar or corresponding parts.

A represents the draw-head; B, the trip; O, the link; D, the coupling-pin; Z) Z), a compound seat for the inner end of the link to rest in when about to couple to ano her car; W, a recess in the floor of the draw-head to allow for an increased length of the trip.

Referring to Fig. 1, it will be seen that this figure shows the draw-head without the coupler.

Referring to Fig. 2, which shows a crosssection through the center of the couplingpin D, the pivots Z) If, the trip B, and mouth of the draw-head A, it will be observed that the coupling-pin is resting upon the trip 13, thus showing the position of these parts be fore the link enters the draw-head in the act of coupling the car.

Referring to Fig. 3, which shows a longitudinal section through the center of the draw-head, showing the draw-head A, the trip B, the coupling-pin D, and link 0; it will be observed that the link is shown to be level, which is its true position when its inner end is resting in the seat I), and the trip B is shown in dotted lines in the position it will occupy when the inner end of the link is placed in seat I) and its outer end sloping down. I

The invention consists in increasing the length of the stem of the trip, so that its lower end will extend below the surface of the floor of the draw-head, a groove b having been preparedtherefor. This increase in the length of the trip, together with a limited depth in the mouth of the draw-head, renders it impossible for the link to pass beyond the trip in the act of coupling, which does occur with imperfectly-constructed draw-heads.

The invention also consists in the construction of the inner or back part of the mouth of the draw-head with a compound seat I; Z) for the adjustment of the link in the process of coupling, in which seat the link will rest, and either in a level or drooping position, as placed therein, in order to couple automatically to an approaching car by the simple impact of the draw-heads when closing together.

It consists, further, in the uniting of the trip with the draw-head in the casting of the same, by which union they become in reality one piece of mechanism, with the trip hinged therein and in working order for the full performance of its functions, and the accomplishment of this is obtained without any subsequent fitting up on the draw-head after leaving the trimming-shop. I-Iow such union is accomplished I will now describe.

In making the core for hollowin g the mouth of the draw-head I use a core-box, which forms a recess in the core in which the trip is placed, with the pivots b projecting inwardly from the wings of the trip to the core for the pin-hole, and outwardly so far that the ends of said pivots willbe flush with the outer surface of this part of the draw-head when cast, so as to provide for the ends of said pivots being surrounded by and incor porated with the molten metal and become integral with the metal of the draw-head, by which means the pivot ends are thoroughly secured in position, so that when the casting isremoved from the sand and cleaned. it is found that a perfect draw-head with coupler has been produced, the journals free and ready for delivery.

To recapitulate my improvements: They are, first, the lengthened trip B, extending into the floor of the draw-head, as shown in Fig. 3, and so constructed that the said trip cannot be damaged by the link 0, as described; second, the compound seat I) b for the adjustment of the link 0 properly and readily for coupling to high and low cars; third, the casting of the draw-head A by the described means and appliances, so that the pivot ends of the trip B will be incorporated with the molten metal of the draw-head, so as to do away with the ordinary fitting up of the same, and consequently to lessen the cost of the draw-head.

I am aware that it has been done, the uniting of certain simple pieces of machinery in the casting of the larger piece by running -molten metal around certain parts, which adheres to such parts and unites the same, but I do believe that I have been the first to invent and use successfully the described appliances for the manufacture of a finished draw-head.

Having thus described my invention, I claim 1. The draw-head A, in combination with a trip B, pivoted in the center line of the coupling-pin D and extending into a groove b in the floor of the draw-head, as shown and described, and for the purposes set forth.

2. In a draw-head A, constructed with a trip 13, pivoted in the center line of the coupling-pin D and extending into a groove b in the floor of the draw-head, the combination of the link 0 and seats I? b in the back part of the mouth of the draw-head, as shown and described, and for the purposes set forth.

JOHN JOSEPH LAPPIN.

Witnesses:

J OHN ELLIOTT, G. ELLIOTT.

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