Патент USA US2113817код для вставки
April 12, 1938. J. SNEDI‘DON 2,113,817 CONTROL DEVI CE Filed Jan. 50, 1956 711/1. " é JOHN 5A/E000/v, 2,113,817 Patented Apr. 12, 1938 ATENT OFFICE. UNITED STATES 2,113,817 CONTROL DEVICE I John Sneddon, McKeesport, Pa., assignor to Na tional Tube Company, a corporation of New Jersey Application January 30, 1936, Serial No. 61,625 1 Claim. (Cl. '74—501) grooves l3 and cable clamps l4 whereby a con This invention relates to a control device and more particularly one which is operatively con nected to a remotely situated valve, or the like. In the operation of billet, plate or skelp heat ing furnaces using by-product or nautral gas as 5 trol cable !5 may be connected therebetween. This control cable I5 is mounted over suitable pulleys l5 and carries a conventional turnbuckle H. A pointer i8 is also carried by the control cable l5 for coaction with a scale l9 which is mounted on the vertical standard 8. A horizontal table 20 is pivoted, as at 2|, t0 the vertical standard 8 and extends immediately 10 above the shaft Ill and segmental wheel I2. This fuel, the supply thereof is ordinarily carried in underground mains and the volume controlled by means of a butter?y valve. This valve is usually located on the side of the furnace and is there 10 fore not readily accessible to the furnace oper ator. table 20 carries on its lower surface a rotatable shaft 23 which extends at right angles to the shaft ID. A worm 24 is secured to the rotatable Under certain conditions, the furnace operator must remain at a station (such as the outlet or inlet end of the furnace) and cannot take leave 15 therefrom to adjust the butterfly valve. For example, in skelp-welding operations the welder must also operate the furnace and for him to leave his station for valve-adjustments would re tard production. 20 While occupying his working station, the fur _ shaft 23 for engagement with a worm wheel segment 25 on the segmental wheel l2. A hand 15 wheel 26 is secured to the outer end of the shaft 23 for enabling its convenient rotation, whereby the accurate adjustment of the butter?y valve it may be effected. 20 nace operator can readily ascertain from the character of the ?ame in the furnace the need for regulating the gas volume; whereas the ?ame cannot generally be observed from the location of the valve. It is among the objects of the present invention to provide means for enabling the accurate ad justment of valves or the like from remote loca tions, such as under the conditions previously de 3O scribed. _ Another object is to not only effect minute adjustments of a remotely situated apparatus but also to instantaneously restore it to a pre determined position when such a need arises. The foregoing and further objects will be ap parent after referring to the drawing, in which: Figure l is a diagrammatic view of the appara tus of the present invention, part of which is shown in section. the line II—-II 40 Figure 2 is a sectional view on of Figure 1. ' Referring more particularly to the drawing, the numeral 2 designates an underground conduit in which there is disposed a butter?y valve 3 for the ?ow of gas therein. 45 regulating A segmental wheel 4 is secured to the operating shaft of the valve 3 and carries an ear 5 to which there is connected a counterweight 6. As shown in Figure 1, this counterweight B in?uences the butter?y valve 3 into its closed position in the conduit 2. A vertical standard 8 extends above the ground level to a height suitably accessible to a work man at a position adjacent a heating furnace of the type referred to. This standard carries a horizontally disposed rotatable shaft In to which there is secured a segmental wheel l2. The seg mental wheels 4 and I2 are provided with cable In case it becomes necessary to rapidly close the butter?y valve 4 the furnace operator raises the horizontal table 20 whereby the worm 24 becomes disengaged from the worm wheel seg ment 25, and the valve is closed by the counter weight 6. . 25 While I have shown and described one specific embodiment of my invention it will be under stood that I do not wish to be limited exactly thereto, since various modifications may be made without departing from the scope of my inven 30 tion, as de?ned by the following claim. I claim: A remote control device comprising, in com bination, an element to be controlled, means for moving said element into a determined position, 35 a rotatable shaft remotely disposed with respect to said element, a ?exible cable connecting said element and said rotatable shaft, a Worm-gear secured to said rotatable shaft, a second rotat able shaft disposed adjacent said ?rst-named 40 rotatable shaft and at right angles with respect thereto, said second-named rotatable shaft be ing constructed and arranged for manual pivotal movement toward and away from said first named rotatable shaft, a worm secured to said 45 second~named rotatable shaft, said worm being constructed and arranged to mesh with the worm-gear on said ?rst~named rotatable shaft and to move into and out of engagement there with upon the pivotal movement of said second 50 named rotatable shaft, said ?rst-named means being operable only when said worm is out of mesh with said worm-gear and means operated by said ?exible cable and visible from said second named rotatable shaft‘ for indicating the position 55 of said ?rst-named element. JOHN SNEDDON.