US727933A - Trap-door hinge for railway-coach vestibules. - Google Patents

Description

I PATENTED MAY 12-, 1903. G HI 0 TRAP DOOR HINGE POR'RAILWAY COAGH VESTIBULES.

APPLIOATION PILBD PEB. 2, 1903.

.HO MODEL.

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Winess es atented May 12, 1903.

P TE T FFICE.

GEORGE H. GIFFIN, OF TOPEKA, KANSAS.

T'RAP-DOOR HINGE FOR RAlLWAY-COACH VESTIBULES.

' SPECIFICATION 'orming part of Letters Patent No. '727,933, dated May 12, 1903.

Application filed February 2, 1903. Serial No. 141,456. (No model.)

To all whom it may cancer-n:

Be it known that I, GEORGE H. GIFFIN, a citizen of the United States of America, residing at Topeka, in the county of Shawnee and State of Kansasflave invented new and useful Im provements in Trap-Door Hinges for Railway-Coach Vestibules, of which the fol- 4 lowing is a specification.

The invention has specialreference to the newer construction of railway-coach vestibules, in which the sides and side doors of the vestibules are approximately on a line with the sides of the coach, the area of the steps being covered bya trap-door which when the side door of the vestibule is to be opened to permit ingress or egress by Way of the carsteps is folded back of the vestibule-door and against the end of the coacl'.

It is the object of the invention to provide a hinge for the trap-door which is simple and economic in construction, which is strong and not readily broken or liable to be torn from its seat, and which permits the trap-door to 'be folded snugly against the end of the coach and also forms a safe support for the door. Although more especially designed for use on trap-doors for vestibules, it will be apparent that it will prove equally desirable in other similar constructions where like objects are to be accomplished.

The invention consists of the novel combination, arrangement, and disposition of the parts, the preferred form of the embodiment whereof is hereindescribed and claimed and is shown in the accompanying drawings,forming part of this specification.

Figure l is a top or plan View of the strap member. Fig. 2 is a side View thereof. Fig. 3 is a cross-section through the line 3 3`of Figs. 1 and 2. Fig. 4 is a front View of the abutting plate or stationary member, with a dotted Outline of a portion of the trap-door and strap member thereto attached in the position, horizontal, shown in Fig. 5, which is a section through the line 5 5, Figs. 4, 1, and 3, and which shows the hinge attached to the trapdoor, with a portion of the coach end to which the abutting member is fitted.

Like letters of reference indicate like parts throughout the several Views.

The invention is a loose-joint butt-andstrap hinge.

C is the strap member, having a knuckle E and the integral plate F, whose ends ffproject from the sides of the knuckle. butt member,having an opening G and Slots g g exteuding laterally from the upper end thereof to accommodate, respectively, said knuckle and said plate F and projecting ends ff.

I is a lug protruding from the plate H to form a supporting-bracket for the trap-door 'B in order that the strain shall not all be on the strap C.

A represents a section of the framework of the coach end, A' being a recess chiseled out to accommodate the knuckle E, and B represents asection of the trap-door.

B' C' E F' represent the position of the trapdoor and strap member when the trap-door is folded up againstthe coach end.

D D and h h are suitable screw-holes.

The Construction and proportion of the parts comprising the hinge are such that when the same are assembled, as shown in Fig. 5, the plate on the knuckle E, having the projecting pins ff, bears against the inner face of the plate H, while the trap-door secured to the inner face of the strap C abuts snugly against the outer face of said plate and is supported by the lug I, projecting from said ;strap or movable member C is screwed to the under side of the trap-door, the knuckle abutting the edge of the door. It is understood, of course, that there are ordiuarily to be a pair on each door. The hinge is connected together or interlocked by holding the door in a vertical position, raising the knuckle E above the support I until the projections ff register with the slots gig, when they (the projections and knuckle) are pushed through the plate H, and the door, still held vertically, is lowered until the knuckle E rests on the support I, as shown by the dotted outline B' C' F', Fig. 5. The door may be heldin this position by any suitable means, as by a hasp, (not here shown,) When the steps are in use; The door swings on the knuckle E, 'which bears on the lower side of the opening G 'and on the supportl and is held snugly up against His the IOO the end of the coach by the pin F and projections ff.

The plate F and projeetions ff are wider than the Slots g g, so as to form a elosure for said slots, thus preventing dirt from getting in and elogging the paris.

There may be slight variations from the exact description shown he'en and in the drawings without departing from the spirit of the invention.

What I claim as new, and desire to secure by Letters Patent, is-- In a trap`do0r hinge the eombination with the strap C provided with the knuckle E having the plate F and pins ff projeeting laterally from said plate, of an abutting plate H having an opening Gr and slots g g, whereby the sti-ap O may be operatively connected to the abuttiug plate and be supported thereby.

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

GEORGE H. GIFF IN.

Witnesses:

JOSEPH GROLL, JOHN PRESCOTT.

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