US83923A - Improvement in automatic gate - Google Patents

Description

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I/V. W. BURSON, OF ROCKFORD', ILLINOIS.

Letters Patent No. 83,923, dated Nocembcr 10, 1868; wnftezlatcll October 31, 1868.

MPROVEMEN T IN AUTOMATIC G-Alii.

The Schedule referred to in these `letters Patent and making part of the same.

To all whom. tt may concern:

Be it known that I, W. W. Bonson, of the city of Rockford, in the county of lVinnebago, and State of Illinois, have invented a new and useful Approach-l Opening or' Automatic Gate; and I do hereby declare that the following is a full, clear, and exact description j of the construction and operation of the same, refervence being had to the annexed drawings, forming part lof this specification, in 'whichson in awagon or carriage, or on horseback, without dis-v mounting, and consists of certain combinations of devices hereinafter to be set forth.

In the drawing, A is the bas, representing the ground oname to receive' the posts E E', and the posts B C' Cl', which support the gate P by the elevated ways D D', the friction being relieved by the'sheaves ao. The iight-angled swinging arm K,.pivoted to post 'Bat c, attaches the pitman-L, which is hinged to the gate-bar lr at d, (fig. l.) The levers F F', hin'ged .to the cross-beam N at j'f,operate the right-angled swinging arm K, by means of the. connecting-pieces I 1 taking hold of the arm K at g.

For convenience of operation, the pendants H H are attached tothe outer end of levers F F', and communicate the same motion to them as if ltaken hold of directly. The cross-way D is hinged at h to the post B, and the other end can be raised, as shown in the dotted lines, (iig. l.)

The gate P is constructed by fastening the bars r lrr between the pieces 0 O and O O', with diagonal bracing, if desired. The pieces O O are of suicient length to. reach the elevated way D, receiving the friction-.sheave a.between them, which supports the front end of the gate. The pieces O' O' secure between them the bars at the rear end lof the gate, and also the sheave c', and are about the height of the gate. C

The wire, m, connects the pendants H H', and enables the gate to be opened from the opposite side from which it has been fastened closed, as described further on. p

In operation, the gate P being closed, as shown in fig. 1, full lines, the pendant'H or H is drawn downward, which swings lever F, hinged at f, drawing upward the right-angled projection of swinging yarm K, acting through connecting-pieces I I', which movement pushes open the gate P bj' pitman L.A Pushing upward on the .pendant H reversesthe'abovej-'mentioned move` ments, andvlpses the gate. If yit is desired to fasten the gate securely closed, the pendant H or His placed on top of the post E E', in which situation it cannot be opened until the pendant is removed from the post, as above described. If it is desired to open the gate from the opposite side from which it was fastened, the pendant is readily drawn from the top of the post by drawing upon the wire, m.

My' aim has been, in this invention, to furnish an approach-opening or automatic gate, which should combine cheapness, simplicity of construction, and durafv bility, and at the same time beso arranged as to be made ,with a farmers kit of tools, without calling into requisition either the'blacksmith or machinist. Accordingly, 'it will be seen that the4 gate can readily be constructed entirely of wood, although iron boite, when obtainable, Vare 'of coinse preferable to wooden pins, as also the friction-sheavesare better made of iron than wood.

In this invention, especial attention is invited to the following explanation of the devices employed to accomplish the foregoing-mentioned results.

.First,.the gate is constructed by fastening the bars r r-Jr between the perpendicular pieces 0 O and O' O',

' which serve the double purpose of holding the barsin place, and also the iction-sheaves a a', which support the gate on the ways D and D', and since these supports pass on both sides of the ways, the gate cannot be thrown olf the track, as isthe case whenl the sheave is supported on one side only, as is usually done. This plan of supporting the friction-sheaves a a between two wooden supports is much cheaper than the usual iron fastening given the -shcavewhen supported only from one side.

Second, the way D is placed over the carriage-drive, at the desiredheight, and the way D' is placed lower, so that it may pass between the gate-bars. The advantages of this arrangement of thev ways, over the usual plan of having them at the same height, are that the gate will be verymuch lessfai'ected by winds in opening and closing, while it saves the extra height.

of the post C and hangers O O.

Third, it will be observed that the weight of the swinging arrnA K would tend to start'the gate open when closed, and closed when open, but as it hangs perpendicularly at the half-way distance, .it requires power to move it in either direction, To overcome this tendency of arm K, one or both of the ways D D' are curved upward om both ends, so as to make the movement of the gate about of equal force.

Fourth, the way D is pivoted at h to the post B, the l other end resting on apin in post C, and is heldinposition by a notch in the under side of the way-piece. The advantages of this arrangement over a solid fastening of the way-piece to the posts are, that it need -not be placed higher over. the carriagefdrive than to permit the usual vehicles to pass under it readily, and Ywhen any higher object, as a load of hay or straw, has

fo pass under it, the driver nn the load can easily Vraise the 'Wray-piece,V so that the load goes under 1t also saves the extra height of posts B and C, and hangerpieces O O, and still more important is the more positive guiding of the gate in time of hard winds. If the way D were jointed and hinged outside ofthe restingplace of sheave a, when the gate was open, it could then be raised perpendicularly, offering no hindrance to the passage of the tallest object through.

Fifth, the levers F F are hinged to the cross-beam N, which is fastened to post `B. These levers are hinged at f to the connecting-pieces I I', which take hold of the Tight-angled part of swinging arm K. The lower end of arm K is hinged to the balanced pitman L, which is hinged to the gate P at d.4v The pendants H H -are fastened t'o the outer ends of levers F It will be`seen that drawing downthe pendant H will, through the medium of lever F, connecting-piece I, swinging arm K, andbalanced pitman L, open the gate P, and pushing upward on the pendantwill reverse all these movements, and close it. This arrangement and combination saves the usual ropes, chains, frictionsheaves, and distance-posts to support the same, and is free'from the objection of beinga'ected by rain and sleet, as is the case with ropes land chains, besides being much cheaper, 'and more durable.

Sixth, the levers F Fare hung obliquely upon the piece N, so that-the pendant H shall be in reach of the driver, as also obliquely to the perpendicular plane, as it would not'be convenient to draw directly down- Ward upon the-lever F from the carriage. To accommodate these two conditions, the levers 'are placed at the desired angles to each plane. v

Seventh, the levers F F' are constructed 'ct' tlu'ee pieces, i', running the length of the lever, placed on its edge, ",reinforcing this piece past the pivot-pin f, and i, placed over these, stiening the lever 'sidewise, (iig. 4;) -This 'construction of the levers renders them stiff .and light, giving them extra strength where the greatest comes, and also partly balances them.

Eighth, the pendants H Hf are fastened to the outer ends of levers F F', in such manner that they can swing freely, either lengthwise or crosswise of the lever, which movements are necessary to accommodate the convenience of drawing and pushing them, and frees the pendants from the danger of being broken off bybeing run against by anything. This. fastening is made' by cutting a curved recess in lever F, near its outer end,

' on the under side, and making a curved opening or fork in pendant H, then making a ,hole in pendant H, about on a linewith the under surface of the lever, through which hole a wire or cord is passed, and over the lever, connecting the two with a fastening admitting of the movements before spoken of. Other methods of making this jointed connection may, of course, be used, but this plan is chosen on account of its adaptability to the wants of the farmer:

Ninth, it will be seen that the pieces I I', connecting levers F F with swinging arm K, cannot be fastened rigidly to either piece, but each end must, roll somewhat upon its fastening. To accommodate these movements, and at the same time furnish the cheapest possible fastening, the parts 'referred to are somewhat rounded, and the holes in pieces I I are elongated or enlarged, for the play of the bolts, permitting the motions required.

Tenth, the pitman L, forming connection betweenswinging arm K and the gate P, is extended beyond its pivot, d, and the extension enlarged or weighted, t0 assist in balancing the parts, and equalizing themovements of the gate. Without this balancing of pitma'n' L, and the 'curve of way D, as hereinbefore described,

.the weight'of the swinging lever K and pitman L' would tend to open the gate partly when closed, and close it partly when-open, but the'pitman lcan beI so balanced as to overcome this tendency, and to assist in closing and opening fully ,the gate. i'^[ Eleventh, the pendants H are connected by the wire,

m. When it is desiredto fasten the gate closed, the

end of the pendant is placed on. top of the post under it, 'which holds it securely closed until it is removed from the post, which may be done 'from the opposite side from which it was fastened, by means ofthe wire, m. `Fiom the foregoing description of the devices herein used to accomplish the desired result, it will be Been that simplicity of construction, and durability of the parts, have been leading objects throughout; and I shall desire to secure the benefit of this plan' of construction, as equally effective with complicated devices, and much'xnore valuable for general use.

What I claim as my invention, and desire to secure by Letters Patent, is-

1. The combination and arrangement of levers F F', pendants H H', connecting-pieces I I', arm K, and ways D D', when the whole are constructed and operatedV substantially as and for the purpose set forth.

2. Constructing the way D or D with suitable curve to overcome 'the gravity of swinging arm K, substantiallyas specified.

3. The combinationand arrangementof the pendants H H', wire, m, and posts E E', operating substantially as and for the purpose set forth.

W. W. BURSON.' Witnesses:

Trios. J. RUDD, Crans F. MILLER.

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