US433949A - Bridge-gate - Google Patents

Description

(No Model.) 2 Sheets-Sheet 1. J. P. MALONEY. BRIDGE GATE.

No. 433,949. Patented Aug. 12, 1890.

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BRIDGE GATE.

No. 433,949. Patented Aug. 12,1890.

Nrrnr) STATES PATENT ()FFICE.

J OIIN P. MALONEY, OF MILWAUKEE, WISCONSIN.

BRI DG E-GATE.

SPECIFICATION forming part of Letters Patent No. 433,949, dated August 12, 1890.

Application filed December 23, 1889. Serial No. 334,609. (No model.)

To aZZ whom it ntay concern:

Be it known that 1, JOHN P. MALONEY, of Milwaukee, in the county of Milwaukee and State of Wisconsin, have invented new and useful Improvements in Bridge-Gates; and I do hereby declare the following to be a full, clear, and exact description of said invention, reference being had to the accompanying drawings, and to the letters of reference marked thereon, which form a part of this specification.

My invention relates to improvements in bridge-gates that are adapted for use with swinging bridges, and that are automatically opened and closed by the swinging of the bridge.

In the drawings, Figure 1 is an elevation of an abutment or approach to a bridge with my improved gates and a portion of the mechanism for operating them shown in connection therewith. Fig. 2 is a vertical transverse section on line 2 2 of Fig. 1, in connection with the end of a swinging bridge, the gate being shown as swung open inwardly overthe end of the bridge. Fig. 3 is a detail plan of the rack on the end of the bridge and the cogwheel and mechanism geared thereto. Fig. 4 is an elevation of a modified form of gates and mechanism for operating them.

A is the abutment or approach to the bridge. In that form of my device shown in Figs. 1 and 2 the gates B B and B B are each secured rigidly to their respective vertical posts C O and O O, the gates B B being adapted to swing across and close the carriage-way, while the gates 3 B are adapted to swing across and close the sidewalks. A fence or guard D, supported on the abutment A, extends on the abutment both ways from the outer edges of the gates B B. The posts 0 C have their bearingsin the abutmentA and are revoluble therein. These posts are also furnished with fixed pinions E E, or are geared to a post having a pinion E by pinions E E, as shown at the left in Fig. I. The pinions E E each mesh with one of the racks F F, which racks are adapted to reciprocate endwise in ways therefor fixed on the abutment A. The racks F F are each connected by one of the rods G G to one of the cranks H II, respectively, rigid 011 shafts I I. The shafts I I have their journalbearings in boxes therefor secured to the abutment A. The shafts I I areeach provided with a cog-wheel K, which cog-wheels mesh with each other, and one of the shafts is provided with a fixed cog-wheel L. A rack M is affixed to the end of the swinging bridge N, which rack is located opposite to and is adapted to mesh with the cog-wheel L. The rack M is so located on the bridge that when the bridge is closed the center of the rack is opposite to and in gear with the cog-wheel, and the rack is of such length that as the bridge swings either to the right or left the cog-wheel L is rotated a one-half revolution, and the racksF F and pinions E E have such proportionate size and relation thereto that by the half-revolution of the cog wheel L the gates B B and. B B are swung at one-quarter revolution, being carried through an arc of ninety degrees. By this construction, when the gates are closed, as shown in Fig. 1, the bridge being at the time open will, as it is swung back to close it, carry the rack M into engagement with the cog-wheel L, and when the bridge comes to its fully-closed position will have swung the gate open inwardly into the position shown in Fig. 2. Then the bridge is again swung open, the reverse action of the gates will occur, whereby the gates will be again closed, occupying the position shown in Fig. 1.

In Fig. 1 the two gate-posts C and G at the right hand of the figure are shown ata distance apart and each provided with a pinion E, meshing with a rack F,'while at the left hand the two corresponding posts 0 and O" are shown as located very near to each other, one of the posts 0 only being geared to the rack F, while the other post 0 is geared to the post 0. Either of these forms of construction may be used; but probably only one form would be desirable in connection with any particular bridge.

In the modified form of device shown in Fig. 4 I use vertically-tilting bars 0 O instead of horizontally-swinging gates, the bars being pivoted medially in standards P 'P, fixed on the abutment A. Flexible cables or chains R R are connected, respectively, to the outer ends of each of the bars 0 O, which cables run over idle-pulleys S S, supported on the abutmentnear thefoot of the standards I P, and are secured to grooved wheels T T, rigid on shafts U U, having bearings in blocks therefor supported on the abutment A. The shafts U U are provided with pinions V V, which mesh with the racks F F. respond to the racks F F (shown in Fig. 1) and are connected by the rods G G to the mechanism for operating them. (Shown centrally in Fig. 1.)

The bars 0 O are somewhat longer and heavier in their inner arms than in theirouter arms, and are adapted to close by gravity, being so constructed that they do not rise quite to the vertical line when opened. These bars 0 O are also preferably provided with swinging legs W W, adapted to assist in supporting them in horizontal position when closed, as shown in Fig. 4.

The devices herein described are also adapted, with such slight changes as would occur to any mechanic, for use with passenger and freight elevators for opening and closing the doors thereto, and for other similar mechanical constructions.

What I claim as new, and desire to secure by Letters Patent, is-

.l. The combination, with a swinging bridge and a segmental rack aflixed thereto, of two vertical shafts having their hearings in the abutments of the bridge and geared to each other, one of which shafts has a cog-Wheel meshing with the rack on the bridge, and both of which shafts are provided with cranks thereon, horizontal racks having ways in the These racks F F corabutment to the bridge, in which they are reciprocated by the swinging of the bridge, being connected to the cranks on said vertical shafts by connecting-rods, the horizontal reciprocating racks being adapted to swing gates across and away from the approach to the bridge, substantially as described.

2. The combination, with a tilting bridgegate, of a cable secured to one arm of the gate, a wheel on which the cable is wound, a reciprocating rack meshing with a pinion on the wheel-shaft, and means, substantially as described, for reciprocating the rack by the swinging of the bridge, for the purpose set forth.

3. The combination, with a swinging bridge and a rack thereon, of a shaft havingits bearings in an abutment on which the gate is 10- cated, which shaft carries a cog-wheel meshing with the rack on the bridge and a crank fixed thereon, areciprocating rack connected to the crank, a wheel rotated by the reciprocating rack through a pinion on its shaft, and a cable secured to and winding on the wheel and attached to one arm of a tilting gate, substantially as described.

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

JOHN P. MALONEY.

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