Патент USA US2130772код для вставки
Sept. 20, 1938. J. J. MCBRIDE 2,130,772 CAR DOOR OPERATING AND LOCKING MECHANISM Filed NOV. 20, 1935 5 Sheets-Sheet 1 J21 J75?“ 0 72 8)" Q ‘ _ . - ride Q4 ajTiOR/VEY Sept. 20, 1938. J. J. McBRIDF: 2,130,772 CAR DOOR OPERATING AND LOCKING MECHANISM Filed Nov. 20, 1955 2 M1 _‘/ 2. a. ./a00 z2A2w,.6“a. ,3 nan. .“ Wwkr5 4. .” “WW, 4,1. 'l 1A|ul.i J \I/ A? ma H J / 4» J BY M. N”,.‘ £5 0, Sept. ‘20, 1938. J. J. MCBRIDE 2,130,772 CAR DOOR OPERATING AND LOCKING MECHANISM Filed Nov. 20, 1935 3 Sheets-Sheet 3 111121111 jTTORNEY 2,130,772. Patented Sept. 20, 1938 UNITED STATES PATENT OFFICE 2,130,772 CAR DOOR- OPERATING AND LOCKING MECHANISM John J. McBride, Bayonne, N. J., assignor to American Car and Foundry Company, New York, N. Y., a corporation of New Jersey Application November 20, 1935, Serial No. 50,704 ‘ 9 Claims. (Cl. 268-44) This invention relates to mechanisms for oper ating and locking doors, particularly sliding doors adapted for use on freight cars. , The majority of prior constructions have been com 5 plicated and expensive due to the fact that sep door. The arm is provided with a plurality of notches 6, 8, l3 and I2, each of which may en gage a pin l4 carried upon the upper end of the movable fulcrum arm. arate actuating and locking means were pro vided. It is an object of the invention to provide a simple, rugged and ef?cient operating and locking mechanism wherein the number of parts is reduced. The fulcrum arm is formed with a central opening l6 adapted to ' Another object of the invention is the provi sion of a mechanism wherein the locking member is so formed as to permit application of a power ful initial opening or ?nal closing force upon the 15 door. rotatably engage a projection‘ or pivot I8 pro vided on casting 2i] suitably secured to the car side adjacent the door jamb and spark strip 22. A bolt or other means 24 and washer 26 retain the fulcrum arm in position upon the projection, 10 while weighted end 28 insures that the pin M will always be uppermost and in a position to be readily engaged by the operating arm notches. The outer end of the operating arm is provided with a handle portion 30 and a plurality of holes 15 32, through which a retaining pin 34 may be passed. The retaining pin engages the proper set of holes 36 in clevis 38 which is fastened to the A further object of the invention is the provi sion of mechanism wherein the initial opening or ?nal closing of the door may be accomplished by ‘ car structure by chain 40 and eye 42. The retain application of the operator’s weight upona lever. ing pin to prevent loss is fastened to the chain A still further object of the invention is the 4!! by a small chain 44 and is also provided with provision of a mechanism which may be applied an opening to receive the usual sealing means to a car and not project beyond the door plane. These and other objects will be apparent to one 46. . It is readily seen, as viewed in Fig‘. 1, that skilled in the art from a study of the following whenever the pin 14 on the movable fulcrum arm detailed description taken in conjunction with is to ‘the right of the vertical plane through the " a the accompanying drawings, in which: pivot and is in engagement with a notch of the Figure 1 is an elevational view of the mecha operating arm that any downward force applied nism applied to a freight car and showing in to the handle will be vastly multiplied and will dotted outline the position of parts‘in readiness to apply an initial opening force to the door; Fig. 2 is a sectional view of the mechanism shown in Fig. 1; Figs. 3 and. 4 are sectional views taken on lines 3—3 and 4-4 respectively of Fig. 1; Fig. 5 is an elevational view of the device with the parts in position for application of a closing force; Fig. 6 is an elevational view similar to Fig. 1 but showing the door as slightly opened and the mechanism in position to continue the opening 40 of the door as shown by dotted lines; Fig. 7 is a view similar to Fig. 1 but showing a modi?cation thereof; Fig. 8 is a sectional view of the modi?ed form shown in Fig. '7; Figs. 9 and 10 are sectional views taken on lines “.L-S and ill-40 respectively of Fig. 7; Fig. 11 is a sectional view showing a modi?ca tion of the securing means whereby the lock is ' 50 secured to the door, and I Fig. 12 is a sectional view similar to Fig. 11 but showing a still further modi?cation. Referring now to the drawings in detail, it is seen that the mechanism proper is composed of but three parts, namely, operating or locking arm A, rocking or movable fulcrum arm B and the ?nal locking or retaining means C. In Figs. 1 to 6 inclusive the operating or locking arm is shown as attached by eye 2 to door stile 4 in such a manner as to be within the outer plane of the act upon the door to cause it to open. It is also _ obvious that with the pin Hi to the left of the U pivot that any downward force applied to the handle will cause a closing movement of the door. The mechanism is as can be seen essentially a toggle with the off-center joint between the two _ arms, being made adjustable or readily movable in order that a plurality of powerful opening im pulses may be imparted to the door. A single notch is provided for closing the door, since nor mally the door will of its own momentum go _ practically closed, but if it is necessary to obtain a plurality of closing impulses, it is only neces sary to provide additional notches on the oper~ ating arm. The door is readily locked in the closed posi tion, for as seen in Fig. 1 after forcing the door ‘ closed from the position as shown in Fig. 5, it is only necessary to retain the handle in the low ered position by inserting the retaining pin 34 through the clevis and arm. Any door opening tendency is absorbed by the pin M of the ful crum arm and by the chain 40 as is obvious. In the modi?cation shown by Figs. 7 to 10 in clusive the operating arm is attached to the door stile by means of bracket 50 and is provided with 55 slot 52 having notched ends 54 and 56. The arm adjacent the slotted portion is provided with an offset portion 58 similarly slotted to thereby form a guideway for movable fulcrum arm Bil, the up per end of which is providedrwith pin 62 riding 2 ' ‘ 2,130,772 in the slots of the arm. The lower end of the fulcrum arm is adapted to engage the proper or chosen notch at the outer end of a casting 64 fas tened to the car side adjacent the door jamb. The 3. In a car door operating and locking mecha nism, an operating member movably secured to the door, a slot in said operating member, a mov~ casting as shown has two notches 65 and 66 for, able fulcrum arm having one end adapted to closing the door and two notches 61 and 68 for engage the ends of said slot, a ?xed member se cured to the car adjacent the door, notches in said opening the door. The number of notches is, of ?xed member adapted to be engaged by the oppo course, purely a matter of choice as in some cases site end of said fulcrum arm, and retaining means more'than two may be desired. secured to said car to lock said operating mem 10 The ?nal locking is accomplished in this modi ber against movement. ' ?cation by means of a casting having a base portion 10 secured to the car wall and from which projects a suitably braced web 12 carrying at its outer end an upwardly facing U-shaped socket 15 14 between the spaced walls of which the operat ing bar may be positioned. Locking pin 16 is adapted to project through openings in the spaced walls and the operating bar, thus retaining the bar in the lower position. The locking pin is 20 adapted to receive the usual car seal 18 and safety chain 80. The operation of this mechanism is very similar to that described in connection with Figs. 1 to 6, the main difference being that the fulcrum bar 25 may have both its points of contact shifted. It is plain from Fig. 'Tthat with the fulcrum bar in the dotted positiona downwardly applied force on the operating handle will cause opening of the door, while with the fulcrum bar in the opposite 30 end of the slot or full line position that any down wardly applied force tends to pull the door closed. In this modi?cation the locking takes place direct~ 1y due to the fact that the operating bar may react directly against the retaining pin; how 35 ever this pin is relieved of part of the strain by the fulcrum bar. The manner in which the operating bar is se cured to the door stile is immaterial, but that shown in‘ Fig. 1 is the preferred type. In the 40 form shown in Fig. 11 an eye 82 is riveted to the stile and as is easily understood it permits of free vertical and outward or horizontal move ment of the operating bar or handle. The modi?cation shown in Fig. 12 varies only 45 in that a rivet 86 or other means fastens the operating bar to the stile. The rivet will, of course, permit vertical movement of the bar and in order to permit any necessary horizontal or outward movement of the bar the hole is en 50 larged as at 88 and clearance is provided between the rivet head and bar. It is, of course, obvious to one skilled in the art that various modi?cations and improvements of the device may be made and such modi?cations 55 and improvements are contemplated as fall with in the scope of the following claims which de?ne that which applicant considers as new. What is claimed is: ' 1. In a car door operating mechanism, an op 60 erating member constituting a lever movably se cured to the door, an independent movable ful crum adapted to engage a portion of said operat ing member, a ?xed member secured to the car adjacent the door,rand provided with a plurality 65 of spaced portions adapted to engage said mov able fulcrum to vary the throw of the lever when pressure is exerted on its free end. " 2. In a car door operating mechanism, an op erating member movably secured to the door, a 70 slot in'said operating member, a movable fulcrum arm having one end adapted to engage the ends of said slot, a ?xed member secured to the car adjacent the door, and notches in said ?xed member adapted to be engaged by the opposite 75 end of said fulcrum arm. 4. In a car door operating and locking mecha 1O nism, an operating member movably secured to the door, a slot in said operating member, a mov able fulcrum arm having one end adapted to en gage the ends of said slot, a ?xed member secured 15 to the car adjacent the door, and a plurality of notches in said ?xed member adapted to be se lectively engaged by the other end of said fulcrum arm. 5. In a car door operating and locking mecha 20 nism, an operating member constituting a lever movably secured to the door, a slot in said operat ing member, a movable fulcrum arm having one end adapted to engage the ends of said slot, a ?xed member secured to the car adjacent the 25 door, and a plurality of oppositely disposed notches in said ?xed member to be selectively en gaged by the other end of said fulcrum whereby the throw of the operating member matr be changed, upon application of pressure to its free 30 end. > 6. In a car door operating and locking mecha nism, an operating member constituting a lever movably secured to the door, a slot in said oper ating member, a movable fulcrum arm having one end adapted to engage the ends of said slot, a ?xed member secured to the car adjacent the door, a plurality of oppositely disposed notches in said ?xed member to be selectively engaged by the other end of said fulcrum whereby the throw of the operating member may be changed, 40 and retaining means secured to said car to lock the operating member against movement. 7. In a car door operating and locking mecha nism, a pair of members detachably engaged when the door is in closed position, one of said mem 45 bers comprising a lever pivotally connected to the door and formed with a plurality of recesses and the other member comprising a weighted arm pivotally secured to a stationary car part and formed with a fulcrum adapted to engage either of said recesses to vary the throw of the lever when pressure is exerted on its free end. 8. In a car door operating and locking mecha nism, an operating member constituting a lever movably secured to the door, a slot in said oper ating member, a movable fulcrum member sus pended at one end between the walls de?ning said slot and being shiftable therein, a ?xed member secured to the car adjacent the door, and a plu 60 rality of notches in said ?xed member to be se lectively engaged by the other end of said fulcrum whereby the throw of the lever may be varied upon application of pressure to its free end. 9. In combination with the relatively stationary 65 member and a sliding door member, an operating arm pivotally connected to one of said members, a fulcrum member arranged for pivotal engage ment with the other member and being shiftable to opposite sides of its pivotal point for engage 70 ment with spaced portions of said arm for vary ing the throw of the lever when pressure is ex erted on its free end and fastening means for said arm. JOHN J. MCBRIDE.