US1441116A - Automatic vehicle-operated gate - Google Patents

Description

J. R. ROLLMAN. AUTOMATIC VEHICLE OPERATED GATE.

2 SHEETS-SHEET 2 I Jan. 2, 1923.

Fl LED AUG. 9 i921 Patented lain 2, i923.

.TOSLSLH R. ROLLMAN, OF ENCAMPlVIENT, lYlvING.

AUTOMATIC VEHICLE-OPERATED GATE.

.Application filed August 9, 1921. Serial No. 490,970.

The present invention relates to improve ments in automatic vehicle operated gates and has for its object to provide a simple structure of this type having novel means ifor retaining the gates normally closed and "for automatically returning them to such position following the operation thereof.

Vlie invention is designed with as 'few a number of parts as i' practicable to insure against the mechanism becoming disordered in use, and to maintain the cost oit manufacturing at a minimum 'for this type oit construction.

"llliese and such other objects as may hereinafter appear are attained by the novel construction., combination and arrangement of parts to be hereinafter specifically described and claimed.

Reference will now paiiying drawings forming a speciication, wherein:

Figure 1 is a perspective view showing a gate construction of the type comprehended by this invention. I

Figure 2 is a transverse sectional yiew showing in dotted lines the open position oi the gate and the operated position of the vehicle-operating bar and a spring means for actuating the bar to automatically close the gate. i

Figure 3 is a sectional view longitudinally be had to the accompart oi this lot the gate construction and showing in detail the operative connections between the vehicle operative bar and vthe gate members. Figure 4- is a detail view of the means for automatically closing the gate ot the preferred co struction.

Figure 5 is a sectional. view 'i-- of Figure 4.

igure 6 is a detail view partly iii section oi the auxiliary spring means, designed to be used in this construction assisting in clos ing the gates. A

Throughout, the 'following detailed description and on the several ioures of the drawing7 similar parts are re erred to by like referencey characters. y

.Referring to the drawings, A and B des on the line vehicle operated bar ignate a pair of swinging gates suspended across a roadway at each side of which is a supporting post l, rl`he gates may be kof any desired construction, trated comprise metallic trame members, the end bar member oi? each gate being pivotally mounted in the brackets 2 on the inner face oit the gate post vand having rthe said but as herein illus? G0 end bar extended a suitable distance at its .lower end to receive a gear member 3. At

the inner or meeting end ot the gate the trainers bent as yindicated at Li so as to acn ycommodate the operating means ior the gate Attached to the top hereinafter described. of each gate and adjacent the pivot end thereof is a longitudinally extending arm which projects over the gate post l and has suspended therefrom by meansoil a rope (3 a heavy weight 7.

in Figure 1l; the rope 6 passes through the lswiveled eye orgui'de 8 mounted upon a `bracket 9 attached tothe outer 'tace oi the gate post. Thus when the gate is swung around upon its carry the weight out ot its vertical position, but being restrained. from such movement by the guide eye 8, the weight is drawn up` wardly and places the gate under tension 'so As shown most clearly pivot the arm tends to that when the gate-actuating means is released the weight will tend to gravitate to its lower position and this actionr automatically closes the gate.

Centrally oi the roadway is arranged a ot which are suitablyinclined or beveled so that when vehicle approaches the roadway this bar will ride underlthe axles of the vehicle. The bark -is supported a` suitable 9 the `opposite ends 10 90 distance trom the surface ot the yroadway by means of vthe arms ll whichr are pivoted at their lower ends to the bearing members l2 secured in the base oit a depression 13 Aand which*k are at their upper ends mounted The upper in bearing plates or ears lll. bearing i'i'iembers 1.4; `are son'iewhat deeper than the corresponding lower bearing membersin order to take care oit thc variations in depression of the bar by vehicles having varying clearance beneath the axle.

The bai is provided with third supporting arm l5 arranged centrally and connected the same manner to suitable bearings. it

iii each side of this central arm, however, is

disposed an arcuate shaped guide rod 16 hav- 110 ing a 'base plate 17 by means of which said rod is secured to the base ot the depression lo, the two rods 15 when inoperative rela.- tion torming substantially a semi-circle. rllio army 15 is provided with a guide opening to receive the rods 16 and this guide means Lgreatly strengthens the operating bar 9 against lateral. stresses incident. to its operation by vehicles. The guide members 16 in addition to their guiding `Vfunction may have disposed thereupon coil spring` 18, one arranged at each side ot' the arm 15, which springs will place the bar 19 under tension when the. arm is moved in either direction, tending` to restore itto its normal elevated position, and it should le understood that this spring; arrangement be employed kin conjunction with the weight device T, one actingauxiliary to the other, or l contemplate that the weight device may be used without the spring arrangementjust referred to.

The central arm liis tixed to a shaft 19 which at its opposite ends carries a bevel gear member 20, said gears meshing with the respective gears 3 upon the end gate bars ot the gates A and B thus operatively connecting' the vehicle operated member or bar 9 with the. gate members.

rlhe operation of the gate will be clear from the foregoing' but may be briefly sum marized as follows: ll pon approaching the gateway the forward vehicle axle will come into conta-ct with the inclined tace 10 ot' the bar 9 and will ride upon t ie upper surface ot said bar causing` it to be depressed into a dotted line position shown in Figure 2, which actuation will cause the shaft 19 to be rotated and in turn the swung' upon their pivots to open position also as shown in Figure 2. This movement of the `gates, as hereinbetore described, will tend to shift the weight members 7 from the vertical plane occupied thereby as shown in Figure 1, and will place the gates under tension. Or such depression will compress one ot the springs 18 and place the arm 15 under tension. rlhe bar 9 is suiliciently long` to remain depressed by fio-action with the forward and rear axles of the vehicle until such vehicle has entered f within the gates and cleared the same, whereupon the bar 9 will resume its elevated position accompanied by the automatic closing` ot' the gates. Obviously the gates open m f I claim as new and Manlio opposite directions according to the direc.. tion in which the bar 9 is shifted by the vehicle.

A simple and sturdy construction ot lgate or lgates .is provided by an arrangement such as hereinbetore described, and owing` to the lew parts which are employed the mechanisrn will bemore or less tree from becoming accidentally disordered. Vfhenever it is necessary to replace any of the parts they are easilyaccessible. For example, in replacing` the springs 18 it is only necessary to loosen up the bolts 17 sutliciently to enable one of the arcuate members 16 to be shifted slightly away from the arm, whereupon the springmay be replaced.

llaving thus described my invention, what desire to secure by Letters Patent is:

1. In an automatic gate opening` means, the combination with a gate, a vehicle operated bar arranged in the roadway and eX- tending transversely of the position assumed by the lgate when in a closed position, pivotally mounted arms for normally supporting the bar in an elevated position, the ends ot' the bar being beveled for engagement with the axle of an approaching vehicle, an operative connection between the bar and the gate tor automatically opening` the gate when the bar is swung downwardly, guide means for the bar, and a spring mounted upon the guide means and cooperating` with the bar tor automatically closing the gate after operation thereot' by the bar.

2. ln a gate device of the class described, a. pair ot swinging gates, a vehicle operated bar arranged in the roadway centrally ot the gates and transversely thereto, pivotally mounted arms for supporting the bar elevated from the surface of the roadway, arcuate guide means co-acting with one of said arms, actuating means connected with the gates for automatically closingthe saine, operative connections between the gates and the vehicle operated bar, and lmeans auxiliary to the actuating means and' coacting with' the guide means tor the bar tending' to automatically close the said gates after operation by the bar.

In testimony whereof l aliiX my signature.

' JOSIAH R. RGLLMAN.

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