US518743A - mason - Google Patents

Description

2 Sheets-Sheet 1. J. MASON.

(N0 Model.)

GATE.

Patented Apr. 24,1894.

m: NATIONAL umoamapmm: coMPANY.

{No Model.) J MASON 2 Sheets-Sheet 2.

. GATE. No. 518,743. Patented Apr. 24, 1894.

UNITED STATES PATENT OFFICE.

JOHN MASON, OF PETALUMA, CALIFORNIA.

GATE.

SPECIFICATION forming part of Letters IPatent No. 518,743, dated April 24,1 894.

Application filed July 26, 1893. Serial No. 481,550- (No model.)

To aZZ whom it may concern:

Be it known that 1, JOHN MASON, a citizen of the United States, residing at Petaluma, Sonoma county, State of California, have invented an Improvement in Gates; and I hereby declare the following to be a full, clear, and exact description of the same.

My invention relates to that class of gates in which a variable or swinging pivot is employed for the inner upright of the gate, through the movement of which, the gate is first tilted to relieve it of its latch, and is then adapted to swing by gravity to an open or closed position.

My invention consists in the novel construction and arrangement of the variable pivot, and the means for operating it, which I shall hereinafter fully describe.

The object of my invention is to provide means for easily and effectively operating a gate through power transmitted from cranks in the roadway, adapted to be run down by the wheels of a passing vehicle, said means being of simple and economical construction, not liable to get out of order, and adapted to be operated by the exercise of small power.

Referring to the accompanying drawings for a more complete explanation of my invention,.-Figure 1 is a perspective view of my gate. Fig. 2 is a plan. Fig. 3 is a vertical cross section of the pulley F. Fig. 4: is a detail showing the connection of spring N with the cam I.

A is the road-way, at one side of which is the hinge post B, and at the other side is the latch post 0. To the former is secured, near its top, the bracket 12, having at its inner extremity the vertical pin 12.

D is the gate, having the inner upright d, to which, near its top, is secured the socketed bracket 01' which fits down freely over and is thus hinged upon the pin b. The other upright d of the gate has a spring controlled latch d which engages a catch 0 on the latch post 0, in the ordinary manner. Beside the road is a post E having a catch 6 with which latch d engages when the gate is open.

F is an open-bottom hollow pulley centrally pivoted by a pin or bolt said pulley lying in a horizontal plane and adapted to oscillate over. a suitable foundation plate .R on which is a fixed stop r with which lugs r on the pulley come in contact to limit its 0scillation. This pulley is provided near its rim on one side with a vertical pin Gr, upon which is fitted the socketed bracket (1 secured to the lower end of the inner upright cl of the gate.

In the road-way, at a suitable distance from the gate, is a crank H, the end of the shaft h of which has secured to it the double cam I, the faces of which are grooved in order to guide the chains or cables. One of these chains J is secured to the upper rear extremity of the cam, and the other K is secured to the lower rear extremity. The chain J has connected with it a wire j, the other end of which joins a chain J which is secured to the pulley F at the point f. The chain K has connected with it a wire 7c, the other end of which joins a chain K which is secured to pulley F at the point f which point is opposite to that at which the chain J 'is attached. Similarly, on the other side of the gate, in the road-way, is a crank 11, the shaft h of which carriesa double cam I" to which are secured at opposite extremities the chains L and M. The former chain L, joins a wire Z, which is connected with a chain L attached to pulley F at f and the chain M has a wire on, connected with a chain M, attached to pulley F at f.

The spring for returning and controlling the crank shafts and their cams is constructed and arranged as follows: It is a coil spring N, fitted to encircle the shaft, just within the cam. It

has one end 11. which projects upwardly and bears against a pin 0 on the cam. It has another end 91. which extends downwardly and bears against another pin 0 on said cam, the bearings in the two instances being opposite. These free ends at and n of the spring are limited in their return by fixed stops 1) and p, the former of which is cast with the boxing cap P of the shaft, and the latter projects from said boxing lower down. Suitable covers, which it is unnecessary to show, will be fitted over the cams.

The operation of my gate is as follows: Suppose a vehicle approach from the side on which the crank H is located. The wheel runs down this crank. This causes the cam I to turn downwardly,-and thereby to pull upon the connections K 7.: K, whereby the pulley F is oscillated and its pin G moved forward, which has the immediate effect of tilting the latch end of the gate upwardly in a vertical plane, and this lifts the latch from the catch. Continued movement of the pulley F carries its pin through an arc or a circle, which has the effect of throwing the lower hinge out of the perpendicular plane of the upper hinge, whereby the now free gate will swing open by gravity, until its latch en-j gages the catch on the side post E, and in this pos1tion the two hinges will again be in the same vertical plane. As soon as the vehicle wheel leaves the crank H, the latter will.

spring back to a vertical position under the influence of the lower end n of spring N, bearing on the pin 0 of the cam I, and said end is limited by the lower stop 10. When the vehicle has passed the open gate, its wheel runs down the crank H which will turn its cam I backwardly and through the connections L,

l, L, the pulley F will be returned, with the ate it, and to start the gate; then as thelonger leverage of the cam comes into action, the power of the crank is eased up as the gate opens. It is also to be noted that the entire pull of the connections is directed Wholly upon the gate, by reason of the parts being freeof the fixed hinge post, thereby rendering the operation of the gate much easier.

Having thus described my invention, what Iclaim as new, and desire-to secure by Letters Patent, is-

1. The gate having the stationary hinge connection above, in combination with the horizontally oscillating pulley F with its pin forming a variable hinge connection below, said pulley having an open bottom and provided with the lugs r on its inner surface; the foundation plate R on which the pulleyF oscillates, said plate having the fixed stop 7' with which the lugs 0 come in contact to limit the oscillation of the pulley; and means for oscillating said pulley to throw the hinge connections out of the same perpendicular plane whereby the gate swings by gravity, substantially as herein described.

2. The swinging gate having the stationary hinge connection above, and an oscillating pulley with a pin forming a variable connection for the gate below, in combination with cranks in the roadway; the double or pointed cams on the crank shafts, and fixed thereon so that their points extend in a plane at right angles to the plane of the cranks; and the chain connections from said arms to the oscillating pulley, substantially as herein described.

3. In a gate, the crankshaft having thecam with connections to operate the gate, in combination with the coil spring N, on the shaft just within the cam, said spring having the ends it and n'the pins 0 and 0' on the cam side against which said ends bear oppositely; the fixed stop 19 on the boxing cap of the cam shaft for limiting the return of the spring end '11,, and the lower fixed stop 19' on the boxing, for limiting the return of the spring end at, substantially as herein described.

In witness whereof I have hereunto set my hand.

JOHN MASON.

Witnesses:

S. H. N OURSE, J. A. BAYLESS.

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