US1807907A - Bridge gate - Google Patents

Description

June 2, 1931. A. FOSHAY ET AL BRIDGE GATE Filed June 29, 1929 2 Sheets-Sheet l wxx a n *N 13g \Erliaii 1 .g 1% mw W0 m 6 j June 2, 1931. A. FOSHAY ET AL 1,807,907

BRIDGE GATE .Filed June 29. 1929 2 Sheets-Sheet 2 Patented June 2, 1931 UNITED STATES ARTHUR FOSHAY AND CLEO LOVELACE, OF ABERDEEN, WASHINGTON BRIDGE GATE Application filed. June 29,

This invention relates to gates designed primarily for use in connection with drawbridges and more especially bridges of that type in which the movable sections are raised 1; and lowered.

It is an object of the invention to provide a gate that is held normally depressed by the weight of the movable bridge section but which, when released from said weight, will 1:) rise to a position across the road thereby to bar traffic.

Another object is to provide apparatus of this character which is simple in construction and will operate smoothly and efficiently under all conditions.

With the foregoing and other objects in view which will appear as the description proceeds, the invention resides in the combination and arrangement of parts and in the details of construction hereinafter described and claimed, it being understood that changes in the precise embodiment of the invention herein disclosed may be made within the scope of what is claimed without departing 95 from the spirit of the invention.

In the accompanying drawings the preferred form of the invention has been shown.

In said drawings, Figure 1 is a section through a portion of a pier or abutment on which the gate is mounted, said gate and a portion of the movable bridge section being shown raised and in section.

Figure 2 is a similar view showing the gate and bridge section in lowered positions.

Figure 3 is a section on line 3-3, Figure 1. Figure 4 is a top plan view of one of the guide stanchions, a portion of the gate and its counterbalance.

Figure 5 is an enlarged section through one side portion of the gate.

Figure 6 is a section on line 66, Figure 5.

Referring to the figures by characters of reference, 1 designates a portion of a pier or abutment formed with a shoulder 2 on which are erected oppositely disposed similar stanchions 3' that extend above the road level indicated at 4 and are positioned at opposite sides of the roadway. A movable bridge section has been indicated at 5 and is 1929. Srial No. 374,814.

adapted normally torest'with its surface 6 flush with the surface 4 as shown in Figure 2, at which time the end of said section 5 is seated in a recess 7 formed between the stanchions in the upper portion of the pier or abutment. :2 Each of the stanchions 3 may be thickened adjacent its vertical center as indicated at 9 and from this thickened portion may be eX- tended a reinforcing web or flange 10. A vertical slot 11 isformed in the inner face of each stanchion and the inner portion of this slot is widened as shown at 12.

' A gate 13 constructed in any way desired and of any. preferred materials extends across the space between the stanchions and formed on each side edge of the gate are oppositely extending flanges 14. These flanged sides of the gate work within the slots 11 and antifriction rollers 15 are carried by the flanges 14 so as to engage and travel along one wall of each slot. Thus the sliding movement of the gate relative to the stanchions can be effected with minimum friction. The gate can be reinforced by providing vertical ribs I 16 or the like thereon at intermediate points and by employing reinforcing flanges 17 along the top edge. Stop lights 18 can be carried by the gate for exposure to traflic when the gate is raised.

Guide strips 19 are erected on the shoulder 2 and are slidably engaged by brackets 20 carried by a counterbalancing bar 21. Ca bles 22 or the like are attached to this bar and extended over guide sheaves 23 and thence downwardly to ears 24 or the like extending from the lower portion of the gate 13. 7 Bar 21 is of such weight as to overbalance gate 13 and cause it to move upwardly to active position When the gate is relieved from the weight of bridge section 5. When the bridge 1? 9 section is in normal position, the weight of one end thereof will bear upon the flanged upper edge of the gate and maintain bar 21 in a raised position as shown in Figure 2.

To facilitate actuation, the end of the i bridge section 5 can be provided with antifriction rollers 25 for bearing on the gate.

When the gate is in raised position, the end of the bridge section will be free to swing downwardly on to the gate to lower it and no operative connections between these two parts are necessary.

l/Vhat is claimed is:

1. The combination with a pier or abutment and a bridge section mounted to swing upwardly and downwardly relative thereto, of stanchions for receiving the section therebetween, guides in the pier and stanchions, a gate mounted for up and down sliding movement in the guides, yielding means for holding the .gate normally elevated between the stanchions to constitute a barrier, and means providing a rolling contact between one end of the bridge section and the top of the gate for depressing the gate as the end of the bridge section moves downwardly :between the .stanchions.

2. The combination with a pierhaving an approach and a shoulder below the level vof the approach, of stanchions erected .at the sides of the approach, guides formed inthe stanchions, a gate slidably mounted in the guides and normally positioned with its top norm-ally barring :the approach, a weight, a

guide therefor, a fiexibleiconnection between the weight and the bottom portion of the gate, guides for the connection, a bridge section mounted to swing upwardly and downwardly relativeto the-approach, and antifriction means for transmitting thrusts from the bridgesectlon'to the gate duringthe clownward'movement of sald bridge section thereby ,to lower the gate and hold the upper portion thereof between the. pierandthe end of the bridge section.

In testimony that *we claim [the foregoing as-.our;own, we have hereto aifixedoursigna- ARTHUR ,FOSHAY. CLEO LOVELAOE.

tures.

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