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Publication numberUS402799 A
Publication typeGrant
Publication dateMay 7, 1889
Filing dateSep 8, 1888
Publication numberUS 402799 A, US 402799A, US-A-402799, US402799 A, US402799A
InventorsHenry Boddiker
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
US 402799 A
Abstract  available in
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Claims  available in
Description  (OCR text may contain errors)

(No Model.) H. BODDIKER.

DANGER GATE. No. 402,799. Y Patented May 7, 1889.




SPECIFICATION forming part of Letters Patent No. 402,799, dated May 7, 1889.

Application led September 3, 1888. Serial No. 284,496. (No model.)

To all whom, it may concern;

Be it known that I, HENRY BODDIKER, a citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Danger-Gates, of which the following is a full and complete description.

My invention relates to that class of danger-gates adapted to be removed from a roadway or other passage-way when travel may safely be done thereon, and to be placed in position to obstruct the same when travel on said roadway is dangerous, or when from any reason it is desired to stop such travel.

The object of my invention is to obtain a danger-gate so constructed as to be easily removed from obstructing the street or roadway either automatically when a draw-bridge or other moving thing on one side of said danger-gate is moved, or by hand whenever, as from a passing train or other cause, it is desired to operate said danger-gate; to obtain a danger-gate having a movement in such direction and of such a character that persons or things near said danger-gate shall be uninjured thereby either in the opening or closing of the same, and to obtain a danger-gate which may be economically constructed, having but few parts, and not liable to get out of order or break.

I have illustrated my invention by the drm ings accompanying this specification and forming a part hereof, in which- Figure l is a side elevation of my improved danger-gate in a closed position, as the same would appear when placed before a swing or sliding draw-bridge, and arranged so as to be operated automatically bythe opening and closing of said draw-bridge, and with a hand operating device attached to said dangergate. Fig. 2 is a cross-section of my device, illustrating the danger-gate open, also illustrating in cross-section a small portion of the end of a swing draw-bridge having a cam thereon by which the danger-gate is opened in the shutting of the draw-bridge. Fig. 3 is a front elevation illustrating the danger-gate closed. 4 is a front elevation of the righthand one-half of the cam as viewed, by which the danger-gate is automatically operated in the movement of the draw-bridge.

Like letters refer to like parts throughout the several views.

X. is a roadway or street.

Y Y are the sidewalks of the street.`

A A is my improved danger-gate.

A is that portion of the danger-gate over the roadway of the street, and A is that portion over the sidewalks.

B B are posts have guides therein. Gate A A is supported on posts B B, and its direction of movement is controlled by the said guides. y

D D are guides in post B. Guides D D are not necessarily of the particular construction or direction illustrated in the drawings, being varied in direction to give any desired movement to gate A A. In the danger-gate herein illustrated guides D D consist of slots extending through posts B B.

E E are upright posts, forming a part of the frame-work of the gate A A.

F F are rollers in uprights E E, and are placed on the projection f, which is rigidly secured to uprights E E. rlhe purpose of the rollers F F being simply to reduce friction, they may be omitted, if preferred.

In order in a large gate that the distance between posts B B may not be too great, I prefer to have the posts placed at about the (ilividing-line between the sidewalk and the roadway of the street, in which case I construct the guides D D ,Y as herein described and illustrated, as slots, and the projections f f extend entirely through said slots, being rigidly secured to the posts E E on the gateframe 3 but it will be evident that if the posts B B are placed at the line of the street, or near thereto, there would be no necessity of the guides D D forming a slot in the post B B.

G is a rotary rod turning freely in posts B B.

H H are arms or levers rigidly attached Ato rod G at one end and secured to gate A A at the other end by any suitable means, as by a rod and chain, h 7L.

In one form of construction illustrated and described herein the rotatory rod G may be turned an indefinite amount, as when turned by the unwinding of cable K, which passes around or is wound upon drums K and J, and when so arranged levers H I-I may have placed at the outer end thereof a segment of a circle, around which the chain passes, by which motion is transmitted from said levers H H to gate A A.

I is a lever rigidly secured to rod G, and 1T is a friction-roller in said lever.

Drum .I is secured to rod G, and drum K is IOO turned freely in post B by handle or crank 7c. Cable K is so placed on these drums that when wound around drum K by turningl crank 7;v it is thereby unwound from drum J, rod G boing` thereby rotated in a direction to raise the danger-gate through levers II II and connecting parts 7L 7L.

L is an end post of a draw-bridge, and M is a cam placed thereon and secured thereto. Cam- M is shaped to come in contact with lever I or roller vL' therciii as the draw-bridge is opened and closed.

\Vhethcr my improved danger-gate be operated automatically by the opening and closing of the draw-bridge or by hand, as by the turning of crank 71:, I prefer to so construct it that it will assume the closed position bythe attraction or' gravity, as t-hereby the weight of the gate would alone rest upon anything obstructing its descent.

In constructing my invention for use in connection or in unison with a sliding' or swing draw bridge in the way hereinbefore described the drums J -K and cable K may be omitted, and in adapting my invention for use at a railroad-crossing or at other places where said gate is to be operated by handle 7i:

it is evident that lever I and cam M, or theirl equivalent, may be omitted.

As hereinbefore stated, the guides D D may be of dilferentshape from said guides, as illustrated in the drawings accompanying this specification; but when said guides are shaped a-s here illustrated the turning of rod G- and levers II from the position indicated in Fig. 1 to the position indicated in Fig. 2 will cause gate A A to move upward from a closed position, therebyobstructing the roadway to an open position, as indicated in said Fig. 2. In its upward motion the upper end of upright E E follows the direction of slotted guide I), and the lower end of the said gate moves in a direction determined bythe movement of roller F in guide D and the position of said roller upward or downward on uprights E E.

Vhen arranged substantially as herein described and illustrated, the gate will move pei-pendicularly, or nearly so, upward from the position illustrated in Figal for a short distance, after which the upper end of upright E will move forward and upward in guide l). Roller F will continue to move perpend icularly for some distance farther, and thereby the lower end or the bottom of the gate will move backward as the gate rises until roller F-has reached or nearly reached the upper end of guide l), when, roller F following the direction of the upper part of guide 1)', the gate will rotate, or nearly. so, around the upper end of guide D, or around roller F, stationary in said guide I). lly the peculiar motion thus given danger-gate A A all danger of injury to persons or things on roadway X or sidewalk Y is to a great degree, if not entirely, obviated, and thus the objection heretofore urged to automatic dan ger-gates is removed. Another advantage gained by me in this movement of the gate is, that less motion. `is required in rod G and connecting-levers to raise the gate a sufficient distance to allow the passage of vehicles underi'ieath the same than would be if the gate were lifted vertically the entire distance.

It will be evident to one familiar to dangergates operated automatically by the movenient of a drawbridge that a second rotatory rod, G, may be placed below the surface of the roadway, lever I placed thereon, to be actuated by a cam placed underneath the bridge, and of substaiitially the same shape as cam M, hereinbefore described, and the said rod G will thereby be operated in the same manner as is rod G in the precise construction hereinbefore described, and that cable K will be operated by being placed on drum K, secured to rod G. I have illustrated this construction by the dotted lines in Fig. l.

Having thus described my invention, its construction and operation, what I claim, and desire to secure by Letters Iatent, is-

l. In a danger-gate, the combination of a gate adapted to be raised and lowered, posts having guides therein, projections on said gate entering said guides and controlled thereby, and a rotatory rod having a'lever thereon secured at one end to said rod and connected at the other end thereof to the gate, whereby the rotation of said rod. will raise said gate in a path determined by the said guides and projections entering therein, all substantially as described.

f2. In a danger-gate, the combination of a gate adapted to be raised and lowered, posts having' guides therein, projections on said gate controlled by said guides, a rotatory rod having a lever rigidly secured at one end thereof to said rotatory rod and at the other end secured to said gate, and a lever secured to said rotatory rod and adapted to engage with a cam placed on a draw-bridge in the operating of said drawbridge, whereby, when the said bridge is open ed and closed, the said gate is raised and lowered in a path determined by said guides and projections controlled thereby, all substantially as described.

3. In a danger-gate, the combination of a gate, A A', posts B I3, having guides D D therein, projections f j' on said gate, a rod, G, having lever I thereon adapted to be operated by a cam, M., secured on a draw-bridge, and levers II II, secured at one end to said rod G and at the other end to said gate A A,where by the opening and closing ot' the drawbridge will. remove said dan ger-gate. from said roadway or replace th e same, all substantially as described.






Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US4831966 *Oct 14, 1986May 23, 1989Tutelian Clifford HApparatus for mounting a closure on a housing or the like and a confining assembly
Cooperative ClassificationE01D15/005