US541881A - Bridge-gate - Google Patents

Description

(No Model.)

I. RAASGH. BRIDGE GATE.

Patented July 2, 1895.

NITED STATES FERDINAND RAASOH, OF MILWAUKEE, WISCONSIN.

BRIDGE-GATE.

iPEGIFICATION forming part of Letters Patent No. 541,881, dated July 2, 1895.

- Application filed April 17, 1895. Serial No. 546,041. (No model.)

T0 on whom it may concern.-

Be it known that I, FERDINAND RAASCH, a citizen of the United States, and a resident of Milwaukee, in the county of Milwaukee and State of Wisconsin, have invented certain new and useful Improvements in Bridge- Gates; and I do hereby declare that the following is a full, clear, and exact description thereof.

My invention has for its object to automatically bar the approach to a swing-bridge when the latter is open; and it consists. in certain peculiarities of construction and combination of parts hereinafter set forth with reference to the accompanying drawings and. subsequently claimed.

In the drawings, Figure 1 represents an elevation of a gate and mechanism for automatically raising or lowering the same accordingly as an adjacent swing-bridge is opened or closed, a portion of the bridge being shown in transverse section; Fig. 2, a plan view, partly in horizontal section, on line 2-2 of the preceding figure, and Fig. 3 a view on line 38 of the second figure.

Referring by letter to the drawings, A represents hollow posts rising from a bridgeabutment, and mounted in the slotted upper ends of these posts are sheaves b for chains or cables 0 that connect a gate 13 with weights 0, the latter being arranged in said posts; The posts are provided with guides d for vertical rods e constituting parts of the gate, and thus the latter is steadied in its rise and fall parallel to the bridge-abutment.

Depending from the central portion of the gate are links D that connect with other links E, the latter being pivoted intermediate of their extremities to an extension F of the bridge-abutment. By means of the connected links D, E, I connect the gate with levers G that are fulcrumed about midway of their length to said extension of the bridge-abutment, and in order to prevent binding I prefer to have the connections in the form of pinsfon the links E engaging longitudinal extremities of this depending part being usu ally beveled as herein shown.

In practice, when the bridgeis swung open, the depending part H will clear the elbow levers G, and the weights 0 being free to descend, the gate B is drawn up across the ap proach to said bridge. When the bridge is contact with the elbowed end of one or the other of the levers G, and the latter being thus tilted on its fulcrum, power is exerted through links E, D, to lower the gate out of the way, each lever and corresponding link E assuming the position shown by dotted lines in the right hand portion of Fig. 1. By having the levers in link-connection with the swung home the cross-timber will come into central portion of the gate, the latter is prevented from canting when the depending part II of the bridge first strikes one of said levers.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is

1. The combination of a swing-bridge, a

weightcontrolled vertically moving gate,

links depending from the center of the gate,

vided with sheaves, chains or cables run on the sheaves, weights connected to ends of the chains or cables, a gate hung from the other ends of said chains or cables, elbow-levers fulcrumed intermediate of their ends to a suitable support, a link-connection between the levers and gate central of the latter,and a swing-bridge having parts thereof arranged to actuate said levers.

The combination of suitable posts provided with sheaves and'guides, chains or cables run on the sheaves, weights connected to ends of the chains or cables, a gate hung from the other ends of said chains or cables and provided with vertical rods engaging the guides on the posts, elbow-levers fulcrumed intermediate of their ends to a suitable supthe county of Milwaukee and State of Wisport, alink-connection between the levers cousin, in the presence of two Witnesses. and gate central of the latter, and a swingbridge having parts thereof arranged to actu- F. RAASCH. y 5 ate said levers. Witnesses: 1 In testimony that I claim the foregoing I WM. RAASCH,

have hereunto set my hand, at Milwaukee, in N. E. OLIPHANT.

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