US501721A - johnson - Google Patents

Description

(No Model.) y l 2 sheets-sheen 1. F. A. JOHNSON. RAILWAY CROSSING.

lPfaen'td July 18, '1893.

2 sheets-Sheena; 1E.A. JOHNSON. RAILWAY CROSSING.

Paten-ted July 18; 1"8`93 (No Model.)

UNITED STATES PATENT OFFICE.

' FREDERICK A. JOHNSON, OF COLUMBUS, OHIO, AssICNOR OF ONE-HALF To JAMES H. EVANS,

OF SAME PLACE.

RAILWAY-CROSSING.

SPECIFIGATION forming part of Letters Patent No. 501,721, dated July 18, 1893.

Application filed May 27, H92.

Serial No. 434,559. (No model.)

their outer ends supported immediately above To all whom it may concern:

Be it known that I, FREDERICK A. JOHNSON, a citizen of the United States, residing at Columbus, in the county of Franklin and Statev ful Improvement in Railway-Crossings, of which the following is a specification.

My invention relates to railway crossings or intersections and the obj ects( of my invention are, to provide a simple and reliable Ineans whereby a substantially continuous rail connection is formed at track crossings or intersections; to Obviate the necessity of spacing the intersecting rails of a railway; to admit of the `passage therethrough of the wheel iianges and to otherwise produce a substantial and approximately continuous line of track rail at the crossings thereof. These objects I accomplish in the mannerillustrated in the accompanying drawings, in which- Figure l is a plan view of myimproved crossing mechanism. Fig. 2 is a detail view in perspective shown partly in section of the side framework and means for locking-the Switch table. Fig. 3 is a central vertical section on line :l: of Fig. 1, and Fig. 4 is a detail View in perspective, showing partly in section a portion of the table base and rackbar for moving the switch or crossing table.

Similar letters refer to si milar parts throughout the several views.

a represents the metallic base-plate or stationary portion of my improved crossing consisting as shown, of a disk-shaped bottom portion which is provided with an upwardly extending circumferential lange b, thus forming substantially a cup-shape, as shown. The ange b is provided on its inner side with a shoulder b which forms a circular seat therein, as shown. With the bottom portion of the castingaisformedupon the upper side thereof, a central upwardly projecting rounded bearing projection b2 upon which is pivotally supported a central pivot block c, the latter having formed in its under side acentral rounded socket which receives the projection b2 ofthe casting a. This central'pivot block c is as shown in the drawings, provided with side shoulders or ledges d, upon which rest the inner ends of I-beams or other frame beams e which extend horizontally therefrom and have the shoulder b of the base angeb. Asshown in the drawings, these I-beams e are connected 1 by cross-beams e which extend at right-anof Ohio, have invented a certain new and usegles with thebeams e between the latterat formed has depending from the under side thereof, bearing blocks or boxings f between each pair of which is pivoted upon ashaft f', a balancing wheel f2, said wheels being adapted to travel upon the base a.

As shown at g, I provide the upper side of the pivot block c with a suitable depression or oil receptacle which communicates with the'surface of the pivot projection b2 through a suitable oil channel g', formed through the center of the block c. This oil depression g is normally covered by a suitable plate g2.

The frame-work produced by the connection and use of the beams e and e is covered as partially shown in Fig. 1 of the drawings by suitable planks or sheeting h, thus producing the circular platform h', shown.

2 i2 represent track rail sections which are supported and secured to the upper side of ing on opposite sides of the center of the platform andv forming chords of said platform circle. As shown in the drawings, the ends of these rails i2 and their anges are vcut to correspond to the curve of the outer edge of the platform h with which they are ush.

7c lo and la k represent respectively portions of rails which may be the main track rail, the ends of which as shown lin the drawings, rest upon the outer side of the ange b, the rail portions bearing corresponding reference letters being opposite or in alignment with each other.

m m and m m respectively represent end portions of track rails, which extend at an angle with the rails lo lo and the ends of which rest upon the upper side of the base ange b. The inner ends of these railrporA tions m and m are cut tocont'orm to the circle described by the outer edgeof the plat form h adjacent to which they are supported. As indicated at l, each of the rails m and fm has its ange on its outer side cut away to admitof the ends of the rails 7c k abuttingagainst IOO the sides of the railsm vm and'thvus bringing? the surface of vsaid rails' adjacent vto1a11ld flush with each other. v

Formed in the base Iiange bis an elongated slotted opening n. On the inner side of said flange and opposite said slotted opening is ar; ranged a curved rack-bar ovvhichs prefer-j? ably supported from the under side ofthe? beams e. With the teeth of the rack bar o are adapted to engage the teeth o of the curved or rounded head 02 of a suitable leverl o3, which may be fulcrumed at a suitable distance from said crossing. At a point opp0, site the rack bar o is secured to the undery side of the beams e and adjacent to the'hase'l liange b, a suitable bar p which is provided atdesirableppoints:Withopenings p. f

q `representsga Istop-pin, passing througha suitahleopening in the base-flange brand-hee ingsu rrounded luyal coiledfspring q2 therein, g one end of which yis connectedwith said stopl pin and its :innerfendibearing-by theipressure of said-spring against the outer sideof the. bar 10.

The'method of -operatingand utilizingzm-y; improved-railway crossing is.:as -followsz -S,u,p-; posingthe crossing table to-be inthe position shown in Fig. l ofthe drawings, that is, withl the table rails 2 in connection or in abutment With the innery endsof the track :rails/ffml mi, i; it Will-be seenthatsaidtablexrailswl2 Will'serve f to operate to Apreserve the' continuity of lsaid: rails m mf. In case it is desired 'to connect the rails 7c .andk and form-substantially .a' continuation ofthe latterfat the 4crossing, the table 7z:may ybe rotated through-movement of the -lever oa-and `'its-engagement with theracki 0, until the ends lof ,the table rails/t'2 are in alignmentwith'the ends of the-rails 7c 7c. "Ing this manner'it Willbe seenythat theiangnlar :1 innerendsor points ofthe'rails m will serve-` as :tlllingpieces to :provide a continuous track j surface-from the rails zato the rails 7o. Thei openings p ofthevb'ar p are-so 'located -in said i4 bar as tovcause the pin q to drop into onefof said openings YWhenfa connection `of the rails of the above described character is effected, said pin thus serving to .lock the :crossingr `at the Ypoint of intersection and .that a connection o'f the rails'maybe producedwhich Awill obviateA the wear'or jolt usually contributed to cars passing over crossings.

It will be observed that my improved crossing or switch table may be produced at a reasonable cost of manufacture and Without complication, and that its construction is such as to require but slight power to operate the same.

Having now fully described my invention,

iwhat I claim, and-desire toisecure'lbyLetters :Batentf is- 1. Ina railwaycrossing, 'the combination ,o'f theLba-sefaghaving langedsides b,:a circuflar frame pivoted centrall-y'thereon Aas described,'fpermanenttrack rail sections 2 on said frame havingtheir ends'cuttoconform fr, .to the circle described i-bywsaid frame iand main orsWitch-tl-'aek rails having their ends vcut in `the arc .of thecircle described 'by said iframe and :supported uponsaid base flange b, said rails 712. adapted vtoabe broughtiasdescribed, into:alignment 'with either saidmain or switch zrails, substantially as,y specified.

2. Inra railway crossing, the combination ofthe `base afside fiange b formed therewith, ',a circular frame. pivoted centrally fon `-said base, Wheels f2 journaled in boxingsdepen'd- .ling from said frame andadapted to bearon said base, fpermanenttrackrail sections i2 on said frame having their ends cutrto conform '.to the circle describedfby saidframeand main or switch track rails having their ends'cutin thearc of the circle=described bysaid frame said rails i? adapted .to be brought into align- Vment with 'said :main or switch rails, substantially asI specified.

FREDERICK A. JOHNSON.

In presence of- O. B. BAKER,

C. C. SHEPHERD.

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