Патент USA US2412346код для вставки
Dec” 10, 1946. T_ MADLAND ’ ‘ 2,412,346 DOOR OPENING AND CLOSING DEVICE Filed Dec. 7, 1942 23 2 Sheets-‘Sheet l 45 - 40 34 ‘Marry? Dec. 10, 1946. ' T. MADLAND ' 2,412,346 DOOR OPENING AND CLOSING DEVICE Filed Dec. 7, 1942 _ ’ 2 Sheets-Sheet 2 '~ l/VVE/V ‘foe ~ THOR 1/671. 0 .MQDL 9ND y "W 61/; Patentecl Dec. 10, 1946 2,412,346 ‘UNITED STATES PATENT OFFICE DOOR OPENING AND CLOSING DEVICE Thorvald Madland, Chicago, 111., assignor to The - Youngstown Steel Door Company, Cleveland, Ohio, a corporation of Ohio Application December 7, 1942, Serial No. 468,050 4 Claims. (01. 268-44) 1 2 This invention relates to door opening and closing devices and is concerned primarily with such devices for sliding car doors. It is an object of this invention to provide open double door construction for railway house cars. ing and closing devices for sliding doors embody The main door H) of this construction embodies a metallic panel I 1 formed with a plurality of 01 ing an opening lever and a closing arm, wherein thellever and ‘closing arm are formed as a unit capable of exerting door closing force of increased magnitude without involving an increase in the length of the lever.’ . horizontal corrugations I2 which merge'at their ends into vertical corrugations disposed adjacent to the vertical edges of the panel. One of ,the vertical corrugations I3 is illustrated. Each of the vertical corrugations is reinforced by means of a substantially U-shaped member I 4 riveted 10 to it and is bridged by means of a plate member A further object is to provide opening and closing devices for sliding doors embodying a 15 fastened to the panel at opposite sides of the corrugation. The vertical margins of the panel lever and a closing arm wherein the lever is con are reinforced, the reinforcement at the front structed to cooperate with an abutment member vertical margin being designated by the refer to secure door opening movement and the clos ence numeral I6. ing arm is carried by the lever and adapted to cooperate with the abutment memberto secure door closing movement. A further object is to provide opening and The front vertical margin of the main door is adapted to be received within a pocket I‘! formed by means of a front stop member I8 and a flange IQ of a door post 20 which are secured tofa me ,closing devices for sliding doors embodying a 20 tallic panel 2| forming part of the auxiliary door pivotedlever so constructed that it will hang in 22 of the double door construction. The metallic panel 2| is provided with a plurality of horizontal a predetermined position and be limited in its corrugations 23 and vertical corrugations, one of swinging movement. ‘A, further object is to provide opening and which is designated by the reference numeral 24. closing devices for sliding doors embodying a 25 A knee brace 25 is customarily employed to brace pivotally associated opening lever and closing the panel 2| against the auxiliary door post 20. arm unit wherein the lever is constructed to maintain the arm in such position as to insure In the illustrated embodiment’of the invention a base plate 26, preferably in the form ofra cast automatic engagement between the arm and. an abutment member. A further object is to provide opening and clos ing devices for sliding doors embodying a pivot ally associated opening lever and closing arm unit constructed to insure automatic disengagement of ing, is secured upon one of the horizontal corru 30 gations l2 of the main door. The base plate 26 comprises a portion 21» Which conforms substan tially to the horizontal corrugation ‘l2 and which is secured thereto as by means of rivets 28. Ad jacent to the front vertical margin of the main door the base plate 26 is increased in width to w I provide a portion .29 which lies upon and is fas ing movement of the door. tened to the vertical corrugation 13. At the Other objects of the invention will become clear as the description thereof proceeds. upper forward corner of the portion 29 of the base plate an outwardly extending lug 30 is provided In the drawings forming part of this speci?ca tion: 40 one margin of which is curved as indicated at 3|. The widened portion 29 of the base plate is also Fig. 1 is a fragmentary elevation illustrating the formed with a hollow boss 32 upon which the lever invention applied to a double door construction for railway house cars. .34 of the opening and closing device of the in .stant invention is pivotally mounted. This Fig. 2 is a horizontal section taken on line 2-2 of Fig. 1. ' ' 45. mounting is provided by means of .a rivet 33 ex tending through the boss and a washer 35 of Fig. 3 is a view similar to Fig. 1 illustrating one larger diameter than the boss and fastened there of the doors opened by means of the opening the arm from an abutment member during open~ ‘ lever. Fig. 4 is a view similar to Fig. 1 showing the maximum opening of one of the doors at which engagement between the closing arm and an abut ment member can be obtained in order to close the door. The drawings illustrate the preferred embodi . .ment of the invention applied to a well known 55 to by means of the ‘rivet. ‘The lever 34, as more clearly illustrated in Fig. 1 of the drawings, is pivotally mounted upon the boss 32 intermediate its ends. The lower por tion of the lever is formed with a hand grip 3B and one edge of the upper portion thereof isin the form of a cam surface 31. The inner face of the lever 34 is provided with an inwardly extend 2,412,846 r " ii I “ i 4 V V ment of the main door is continued when the ing lug 38 which is adapted to engage the adja- ' cent edge of the widened portion 29 of the base plate in order to maintain the lever normally in ‘ .the’ position illustrated in Fig. 1 of the drawings and to engage another portion of the edge of the widened portion 29 of the base plate in order to . limit swinging movement of‘ the lever as illus trated in Fig. 3 of the drawings; The outer face of the lever 34 is formed with an optwardly extending lug 39 for a purpose hereinafter indi 10 closing arm 4| is engaged with one of the shoul ders on the abutment member 41 the lever will be caused to swingin clockwise direction as a, result of this engagement. When the counter-F clockwise movement of the lever has continued to the point where the curved surfaces of the lugs 30 and 45 again engage the closing arm will be raised above the shoulder so that the opening movement of the door can continue without the " 'need for further manual operation of the lever. cated. The lever 34 is also provided with an out- ‘ This action will occur with each of the shoulders wardly extending hollow boss 40 upon which a catch arm 4| is pivotally secured by means of a until the closing arm has passed shoulder 48. ' As the'lever falls inclockwise direction it will as-' V sume' the positionv illustrated in Fig. 1 of the ' rivet'42 passing through the boss and fastening a washer 43 of greater diameter than the boss‘ upon'the outer end thereof. drawings, this position being determined by the The catch arm 4| is substantially in the form . engagement of the lug 38 on the lever and’ the of a hook shaped member, the forward face of which is inclined as indicated at 44. A lug 45‘ extends inwardly from ‘the rear portion of the. 20 closing arm. The lug 45 includes a curved por tion 46 which is adapted to cooperate with the curved portion 3| of the lug 30 provided on the widened portion 29 of the base plate for the pur pose hereinafter indicated. 1 adjacent edge of the widened portion of the base plate 26. In this position of the lever it will be apparent from Fig. 1 of: the drawings that the closing arm 4| will be supported upon'theoute wardly extending lug 39 [formed onthe-levern: V vIn the closing movement of, the doorthejclos- . V ‘ - ing arm 4| may be supported ‘bvithe lug" .39 so as to insure engagement betweentheinclined ' wall 50 of the abutment member’v and the in An abutment member 4‘! adapted to cooperate ' with the lever 34 and the closing arm 4| is fas ‘tened to the auxiliary door 22, as more clearly clined portion 44 of the closing arm. iThis 5e11 gagement will force the closing arm upwardly so illustrated in Fig. 2 of the drawings. > The abut as to insure engagement between it and the shoul- ' ment member 4'! is preferably in the form of a casting and is formed with a plurality of spaced shoulders 48 and '49. The shoulder 48 is pro vided with an inclined wall 59 and the shoulder '49 is provided with an inclined wall 5|. These ‘ inclined walls of the shoulders 48'and 49 are adapted to engage the inclined face 44 of the der 48. Similarly if the closing movement of the door continues until ‘engagementoccurs'be tween the inclined wall5| of shoulder 49 and the inclined'portion 44 of the closing arm, the latter will again be raised and engagement'e?ected with the shoulder. Operation of the lever 34 at this time in clockwise direction closing arm so as to automatically raise the arm‘ fully closed. will 1 force the door“ ' In Fig. 4 of the drawings the extreme‘ closing ‘ and permit engagement thereof with the shoul ders in order to eiiect closing ,movementof the door. The closing arm 4| is supported in proper 7 movement which can be obtained by means of 40 the opening an closing device is shown‘: Assum position to permit engagement of the inclined‘ inggthat the door has been closedfto thev extent face 44 thereof withthe inclined walls 59 and 5| by means of the 111g 39 formed on thelever.‘ illustrated?the operating lever isswung Referring to Fig. 3 of the drawings, it will be‘ apparent that the cam surface '31 of the lever‘v ~~ cooperates with the abutment‘member 41 upon swinging movement of the lever. counterc1ock-‘ coun- " terclockwise direction so as-‘to project jthe‘i‘clo‘v's ing arm forwardly and permit engagement there; 'of with the shoulder 48._ A force exerted?u'pon the lever at this time so as toswing itin-clo'ck wise , direction will cause ‘the door ‘it movein wise to impart initial opening movement to the closing direction but will not fullyclosezthe door. door. It will also be apparent ‘from this ?gure The lever is again swung counterclockwise-so ‘as to project the closing arm into ‘engagement with of ‘the drawings that the closing arm is projectedi » forwardly during the swinging movement of the ‘the shoulder 49. A force appliedytofthe'leverto lever so as to be released from the engagement ‘ swing it in clockwise direction will then complete. the closing movement of the door.v - with the shoulder 49, illustrated in Fig. 1 of the drawings. As. the door is opened the inwardly fThe Qpenin'gand closing device ‘of theiin'starit ' extending lug 45 provided on the closing arm ap-’ I invention secures a door closing ‘forc'ejofjin proaches theoutwardly extending lug 30 provided creased magnitude without increasingjthelength of the lever. This'is obtainedjbyglocating‘the pivot of the closing-arm at“ a; smaller’ distance on the widened portion of the base plate 26 until contact is obtained between the curved surfaces on these lugs. These curved surfaces upon con tinued counterclockwise movement of the leverv 34 cause the closing arm to swingiupwardly about ' its pivot until it is raised above the‘shoulders48 and '49. The counterclockwise swinging move ment of the lever is limited by the engagement ‘ . of the inwardly extending lug 3.8 andtheadjaé cent edgeof the base plate.v ' ‘ ' from‘the lever pivot than the portion of *thejicam surface of- the lever more remote fromthetleyer pivot; CBy means of this relationship, vthelever- ~ age arm of the door is decreased sojthatjja cor respondingly smaller force isllfqqull‘cd‘IQQ'CIOSQ ' the door. Expressed otherwise, it is possiblezwith the opening and closing'device oftheinstant in ‘ sliding ventionidoor‘ to. effegt: of" greater ?nal‘. closing weight! mbveinentribf with-the'applie ea I ' With the parts of the opening and’ closing ‘de vice maintained in the position shown in Fig. 3 cation of the same force‘ heretofore usedljfor '~ A ' of’ the drawings the door may‘ be moved‘ to its lighter doors and this isaccornpIiShed without ' full opened position. 'Howeven'i-f the lever is re-> 70 increasing the length of the l’évi'e'r‘;~ 5 leased ‘so that it swings clockwise direction While the invention ‘has been'ishown ' applied" to and the closing arm drops into?engagement with one of the shoulders 48 and 49 the door may still be moved to'~f1_1l1 open‘ position without further ' ‘manualoperation or; the device. *As'the move-K r a double door‘ construction 'for*’railwayl_house 09115, it Will be apparent to those skilled in'i-the art that the invention »is~applicable-_ as‘lwelllto single door constructions‘ if 'orf railway house Tears. l 2,412,846‘ 5 In the latter case the abutment member 41 will be fastened to‘the side Wall of the car rather than to an auxiliary door. It will be apparent, moreover, that the lever may be fastened to the car side or to the auxiliary door and that the abutment member may be secured to the main door with such changes as are necessitated by the main door construction.v It Will be apparent that numerous changes and modi?cations in the details of the invention will be clear to those skilled in the art. It is in tended, therefore, that all such modi?cations and on said catch arm spaced from the pivot of said catch arm, said means being engageable with a member on a said door during opening move ment of said door by vsaid lever to automatically raise said catch arm. 3. A lever and arm unit for an opening and closing device for sliding car doors comprising a base plate, a lever pivotally mounted interme diate its ends upon said base plate, said lever having a cam adapted to engage an abutment to impart opening movement to a said door, a catch arm pivotally carried by said lever adapted to changes be comprehended within this invention engage a shoulder to impart closing movement to which is to be limited only by the scope of the a said door, means on said catch arm spaced claims appended hereto. 15 from the pivot of said catch arm, and a member I claim: 1. An opening and closing device for sliding car doors comprising an abutment, a shoulder on said base plate engageable by said means on said catch arm during opening movement of a said door by said lever to automatically raise on said abutment, a lever adapted to be pivotally said catch arm. mounted intermediate its ends upon a said door, 20 4. A lever and arm unit for an opening and a cam on said lever engageable with said abut closing device for sliding car doors comprising a ment to impart opening movement to said door, lever adapted to be pivotally mounted intermedi a catch arm pivotally fastened to said lever, said ate its ends, a cam on said lever adapted-to catch arm being engageable with said shoulder engage an abutment to impart opening move to impart closing movement to said door, means 25 ment to a said door, a catch arm pivotally fas on said catch arm spaced from the pivot of said tened to said lever in closer proximity to said catch arm, and means on said door engageable lever pivot than the remote portion of said cam with said catch arm means during opening move adapted to engage a shoulder to impart closing ment of said door by said lever to automatically movement to a said door, and means on said raise said catch arm above said shoulder. 30 catch arm spaced from the pivot of said catch 2. A lever and arm unit for an opening and arm, said means being engageable with a mem closing device for sliding car doors comprising, ber on a said door during opening movement of a lever adapted to be pivotally mounted inter said door by said lever to automatically raise said mediate its ends, a cam on said lever adapted to catch arm, the leverage arm of said catch arm engage an abutment to impart opening movement 35 being less than the leverage arm of said remote portion of said cam. to a said door, a catch arm pivotally carried by said lever adapted to engage a shoulder to im part closing movement to a said door, and means THORVALD MADLAND.