Search Images Maps Play YouTube News Gmail Drive More »
Sign in
Screen reader users: click this link for accessible mode. Accessible mode has the same essential features but works better with your reader.

Patents

  1. Advanced Patent Search
Publication numberUS1886719 A
Publication typeGrant
Publication dateNov 8, 1932
Filing dateMay 12, 1930
Priority dateMay 12, 1930
Publication numberUS 1886719 A, US 1886719A, US-A-1886719, US1886719 A, US1886719A
InventorsOaks Albert J, Oaks Wallace E
Original AssigneeOaks Albert J, Oaks Wallace E
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Gate
US 1886719 A
Images(1)
Previous page
Next page
Description  (OCR text may contain errors)

Nov. 8, 1932. OAKS ET AL 1,886,719

GATE

Filed May 12, 1930 WITNESS 6.9 I v 32 23 m B 26 l? mmie ATTORNEY Patented Nov. 8 1 932 ram-a Aman n'r I. one, or son'rn FORK, rnmvsvnvniv a, AND warms n. oaks, or"

STEUBENVILLE', onro 3 earn Application filed May 12,

Our invention relates to a safety gate more particularly to safety gates for use in controlling the crossing traflic at railroad grade crossings and consists in the combinations,

,5 arrangements, and constructions herein shown and described. 7

It is an object of our invention topro vide a railroad crossing gate which, if moved to its operative position upon the passage of =1 a vehicle thereunder, will yield upon encountering said vehicle to allow passage of said vehicle from beneath the gate, and that will automatically assume its normal position upon the passage of said vehicle from beas neath the gate. 3

A further object of our invention is to provide a gate of the type described which will permit escape of a vehicle entrapped by the arm of the gate on the railroad track by 7 2 means of so constructing the arm of said gate that the same will yield upon engagement with a vehicle on the track and will automatically return to its normal position upon passage of said vehicle.

A still further object of our invention is to provide a device of the type described which has few parts, which is simple to manufacture and which does not get out of order easily.

30 Other objects and advantages will appear as the specification proceeds and the invention will be more particularly defined in the ap ended claim. 7

ur invention is illustrated in the accom- 35 panying drawing forming a part of this application, in which:

Figure 1 is a sectional view of our gate mounting and operating means therefor.

Figure 2 is a detail plan view of a portion 411 of the device,

Figure 3 is a detail elevational view of the same portions of the device, and

Figure 4 is a sectional view on the line 3-3 of Figure 3.

'45 Figure 5 is an enlarged sectional view illustrating the pivotal connection between the main and auxiliary gate arms.

In Figure 1 of the drawing. we have indicated a tower-support of any conventional structure, upon opposite sides of which 1930, sepi -1' no. 451,682;

there is mounted ape'd estri-an gate 11 and ve- Y hicular gate 12, these gates'being of length to extend across their respective roadways when in lowered operative positions.

For mounting the oscillatingarnisof our a; gate to control the vehicle: traffic upon the crossroad as well as the pedestrian trafii c on the sidewalks adjacent'said crossroad, we have provided shafts or axles-24 and 25, re: spectively.' The shafts2l and 25'are-pesio0 tioned in the upper portion of the tower in the embodiment shown, although theyinay be positoined at any desired point at which it is wishedto have thegateplaced when in opera tive and inoperative positions. 7 f 7 The shafts 2t25 i-nclude arms 13 and 'H respectively, operatively connected with links 15 and 16' of a fluid pressure operating means generally indicated: at 17. It will thus be-seen that motion will be imparted to theshafts m 2 l-upon actuation of the fi u-id pressure means for-moving the: gates 11 and 12*to-an upward ordownward position. I p

Integrally secured totheshaft 24 are the arms 26: and 2710f the vehicle control gate 12. 7 These arms 26 suitably brace and support betweentli'em a7blo'ck'29 or otherSu i-table supporting means for the gate 12. It Will be understood from'an. examination. of Figures 2', 3", and'thatthis gate 12 includes anarm so 28 which is pivoted on the verticalfpivog, as shown at 30,'to the supporting bllocli29. This pivotal mounting ofth'e a 11i 28 -permits oscillation-of said armabout its support pivot 30 to allow escape of thecrossing vehicles upon the traclr as will be hereinafter set forth.

j This arm 28 is provided with a horizontah l'ypositioned' pivot 31 and" associated spring and stop means, generally indicated at 32, for permitting upward swinging of the arnr 28 upon encountering a passing vehicle during the downward movementof the arm. The spring and stop-means comprises the coil spring 34 which may be mounted on the por tion 35 ofiithegate 12, as shown,- and which may have its ends engageable with the surfaces of" said portion 35 and said arm 28 for normally urging said arm into extended alinement with-the portion 35: about the pivot 7 31." Engagement between-theshoulders m5) and 37 at the end of the arm 28 and portion 35 respectively provide the stops which limit the downward swinging motion of the arm 28 about the pivot 31 so that the arm will stop in alinement with the portion 35.

For stopping the swinging motion of the gate 12 in one direction about the pivot 30 as well as for automaticallyswinging said arm 28 into its normally extended position upon engagement therewith of a vehicle for passage therethrough, the same is provided with a spring 38 and stop means 39 and 40 analogous to the spring and stop means indicated at 32 for association with the pivot 31.

upon said body portion, a main gate arm mounted thereon, said gate arm extending outwardly a substantial distance from said pin, stop means carried by said body portion, and spring means connected between said body portion and said gate arm for normally holding said arm against said stop ALBERT J. OAKS. WALLACE E. OAKS.

The spring 38 is of such construction as to extremity and the pivot with a light 40 to indicate a gate closed position. b

The gate 11 may be constructed similarly to the gate 12 if it is desired to control two streams of vehicle traffic. In this embodiment, however, we show it constructed of ordinary arms 42 and 43 integrally secured to the shaft 25, the arms 42 and 43 being adapted to secure thereon a gate arm of any desired construction.

It the gate 12 is lowered until it engages with a vehicle passing therebelow, arm 28 will rock about the pivot 31 on the portion 35 permitting the passage of the vehicle from under the arm. After the passage of the vehicle'from beneath the arm, the spring associated with the pivot 31 will automatically move the arm 28 downwardly to its normal extended position until the stops constituted by the shoulders 36 and 37 are brought into engagement.

If a vehicle is trapped upon the track by our gate when its arm is in the downward position or descending or raising the same can engage with the gate 12 and swing the gate about its pivot 30 to gain passage therethrough. The spring associated with the pivot 30 will automatically swing the gate to its normal extended position until the same engages with the stops 39 and 40.

It is understood that any number of our gates might be positioned at a railroad grade crossing and that in the ideal system or preferred embodiment a pair of these gates will 7 be positioned at the grade crossing.

e claim In a crossing gate, a support, a body portion of a gate pivoted to the support, means for operating the body portion to upward and downward positions, a pivot pin mounted

Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US4227344 *Feb 15, 1979Oct 14, 1980David PoppkeAutomatic parking lot gate with four-way flex connector
US4531325 *May 7, 1984Jul 30, 1985Phillips David AHinged vehicle gate arm
US4844653 *Jun 23, 1987Jul 4, 1989Dickinson Harry DCable-beam trafficway barrier
Classifications
U.S. Classification49/247, 49/9, 246/128
International ClassificationB61L29/02, E01F13/00, E01F13/06, B61L29/00
Cooperative ClassificationB61L29/02, E01F13/06
European ClassificationE01F13/06, B61L29/02