Патент USA US2258123код для вставки
J. F. MERKEL' RELAY 2,258,123 ' Original Filed Jan. 28, 19559 I mwm.I/w mr INVENTOR Mum ATTORNEY Patented Oct. 7, 1941 2,258,123 UNITED STATES PATENT OFFICE‘ RELAY Joseph F. Merkel, Rochester, N. Y., assignor to General Railway Signal Company, Rochester, N. Y. Original application January 28, 1939, Serial No. 253,383. Divided and this application June 14, 1840, Serial No. 340,551 3 Claims. (01. 175_345> This invention relates, in general, to improve ments in relays, and has more particular refer ence to improvements in the so-called “Type-B” The armature carries an operating member 23, which is received in a slot 24, in a contact op erator 25, for moving the contact operator, and with it the usual movable contact ?ngers. Referring now more particularly to Figs. 2 and nection with railway operation. The present application is a division of my ap 3, there is here shown the improved means for adjusting spring 2|, which, as can be seen from plication, Ser. No. 253,383, filed January 28, 1939, Fig. 1, biases the armature M to its deenergized, for Relays, now Patent No. 2,258,122, granted or released, position. This spring 2| is sleeved October '7, 1941. One object of the present invention is to pro 10 on the rod 22 which, atits upper end, is threaded as at 221, and is slotted longitudinally as at 82, vide an improved adjusting means :for varying from its outer end to a considerable distance in the resilient bias on the relay armature. wardly. This slot 82 receives a follower F, which Further objects, purposes and characteristic is a flat plate-like member having a lower portion features of this invention will appear as the de 83 of a width to be received within the spring 2|, scription progresses, reference being made to the with diametrically opposed extending arms 84, accompanying drawing showing, solely by way of which extend beyond the spring 2| and bear example, and in no manner whatsoever in a limit against the upper end thereof. The follower F is ing sense, one form which the invention can as completed by an upper portion 85, which is of a sume. size to be received in the threaded central bore 86, In the drawing: in adjusting nut N, the bore 86 being threadable Fig. 1 is a side sectional elevation, with parts onto the end 221 of the rod. Nut N has an outer shown in elevation of a portion of a relay embody knurled portion 81 and a reduced inner portion 88, ing the present invention. of a size to be received within the spring 2|, the Fig. 2 is a perspective, exploded, view, of the nut being slotted by two transverse slots 89 and armature biasing means. 90 positioned preferably at 90° from each other so Fig. 3 is an exploded view of the armature bias as to receive the arms 84, of follower F, in either ing means. of two positions. The relay essentially comprises an insulating With the arrangement as described just above, base member 4, a housing 5, which is preferably when it is desired to vary the tension of the made of transparent material such as any usual spring 2| , as, for example, to increase it, it is or desired thermal plastic substance, which ?ts necessary merely to push the follower F in its into an annular groove 41 in the base 4. The slot in the threaded stem, to compress the spring, housing 5, and the base 4, are held together, and and then to turn nut N on the threaded stem are held onto a support by means of long through to the proper position and permit the follower bolts 6 which are clamped to the support and F to be urged by the spring 2| toward the nut carry on their outer ends, holding nuts 8. to cause the arms 84 to enter one of the slots Carried by ‘base member 4, by means of screws 89 or 90. In this manner, all parts are locked in 9, are two cores l0, magnetically interconnected adjusted position and the adjustment cannot be by a back strap II, and each carrying a winding l 2 held in place by a leaf spring l8. At the outer 40 accidentally changed. This follows, since the threaded stem 22 is in ?xed position, the follower end of each core I0, is a pole shoe l3, which co is locked to the stem by the slot in the stem and operates in the usual manner with an armature the nut is locked to the stem by the follower. I4, carrying a residual pin l5, and ‘pivoted at IE, It is obvious, of course, in' order to decrease the to a ?xed member H. The ?xed member I1 is tension of the spring, that the nut can be eased held between the pole shoes l3, by means of off, and the same general procedure followed. screws or the like I9. It should be noted that the locking of all of The pivoted armature l4, carries an adjustable the parts has been accomplished without the stop screw 20, for determining its retracted posi need for a wrench, or other tool, for producing tion, and this armature is biased to its retracted, or deenergized, position, by means of a spring 2|, 50 high degrees of friction between parts, and also so that a subsequent adjustment can be made by carried on a threaded rod 22, which, at its lower hand without the use of any special tools, as a end, is screwed into the fixed member IT. The wrench. means for adjusting the tension of spring 2 | , con stitutes one of the features of the present in Thus, a securely locked adjusting means for a 55 biasing spring for the armature has been pro vention, and will be described in detail, below. line of relays, for use more ‘particularly in con 52,258,123 2 vided, which has no binding parts, and which, position, a coil spring sleeved on the stem and for its manipulation, requires no special tools or equipment, other than the hand. adapted to bear at one of its ends on the armae ture, a longitudinal slot in the free end of the ‘ The above rather speci?c description of one stem and extending inwardly thereof a consider= able distance, a follower freely slidable in the slot, form of the present invention, has been given solely by way of example, and is not intended, in any manner whatsoever, in a limiting sense. It should be understood that this application is in tended to cover all such modi?cations, adaptay tions and variations as may prove desirable or expedient, except insofar as they are speci?cally excluded by a reasonable interpretation of the appended claims. I arms on the follower extending outwardly to each side well beyond the spring and bearing against the other end of the spring, a nut threaded on the end of the stem, the follower arms extend ing to each side well beyond the edges of the nut, a transverse slot in the nut for receiving the follower arms whereby to lock the nut to the stem, and a central boss extending inwardly of the nut and receivable within the spring, the Having described my invention, I now claim: 1. In a relay, an adjustable biasing means for 15 follower, below the arms, being snugly receivable in the spring. an armature comprising, a threaded stem ?xed in position, a coil spring sleeved on the stem and 3. In a relay, an adjustable biasing means for adapted to bear at one of its ends on the arma an armature, comprising, a threaded stem ?xed ture, a longitudinal slot in the free end of the in position, a coil spring sleeved on the stem and stem and extending inwardly a considerable dis adapted _to bear at one of its ends against the tance thereof, a follower freely slidable in the armature, a longitudinal slot in the free end of slot, arms on the follower extending outwardly the stem and extending inwardly a considerable to each side well beyond the spring and bearing distance, a follower slidable in the slot and bear against the other end of the spring, a nut threaded on the end of the stem, the follower arms extending to each side well beyond the edge of the nut, and a transverse slot in the nut for receiving the follower arms whereby to lock the nut to the stem. 2. In a relay, an adjustable biasing means for the armature comprising a threaded stem ?xed in ing against the other’ end of the spring, a slotted nut threaded on the stem beyond the follower, the follower having a portion to ?t into the slot in the nut, and having portions extending be yond the spring and the nut on each side, where by a quick action lockable spring tension adjust ing means is produced. JOSEPH F. MERKEL.