US1366236A - Door-operating mechanism - Google Patents

Description

C. ALBRECHT, JR.

noos OPERATING MEcHAmsM. APPUCATION FILED IAN. I6, i920.

1,366,236, Patented Jan. 18, 1921.

3 SHEETS-SHEET l @Houma C. ALBRECHT, Jn.

DOOR'OPERATING MECHANISM.

APPLVICATION man .IAN.16. 1920..

1,366,236. Patented Jam 18,1921.

3 SHEETS-SHEET 2.

N A '/fl C. LBRECHT, JR.

DOOR OPERATING MVECHVANISM. APPLICATION man 1Ar 1.ls.192o.

Patented Jams, 1921.

33134 hmmm cHAaLEsfALBREcnT, JR., or; scHLEIsiNenRVILLE, WISCONSIN."

Doon-creanme irncnamsm. y

Specication of Letters Patent. i "Patented 1315185 1921.

y. "y.ipiniaami` fried :ranaayy 163920. semina. saisie To all whom t flaag/ conceive? Be it known that I, Cimnrnsllnniiorrr,

Jr., a citizen of the United Statesglresiding" at Schleisingerville, in the county1 of `Wash ington and State of V\7iscons1n,"have"1nvented new and `useful lmprovements fin Door-Operating Mechanism, of `which the following` is aspeciication,

This invention relates to door "operating` mechanism of the class which releases the latch mechanism and swings the doors to n open position `by the weightbf the vehicle on a movable platform.' y

The present invention is an improvement over that patented by me onFebruary 19, 1918, No. 1,257,172 and the object of this invention is to simplify the construction and improve the operation ofthe apparatus shownin said patent. j y u Another object of this invention is `to provide means. for operating doors that swing outwardly instead of inwardly". l l.

This invention. also consists in certain other features of construction and in the combination and arrangement of the several partstobe hereinafter fully described, illustrated in the accompanying` drawings `and specifically pointed out in the appended claims. i y l Tn describing` my inventioninfdetail, reference will be had to the `accompanying drawings wherein like characters denote like or corresponding parts throughout the `several views, and in which y Figure 1 is a planview of the invention. Fig. 2 is a vertical section in sideeleva- `tion of the same.

Fig. 3 is an enlargedplan view. y `F ipp/1 is an enlarged front elevation. Fig. 5 is a detailview of the connecting rods for connecting` the cam levers to the crank shaft. y

Figr. 6 is a detailview Fig. 7 is a detail view of the rod for preventing; the-one door from closing n"before the other. w' n .y n y Fig. S. is a detail plan view showinga modification. 1 i

Fig. 9 is a view of the crank 17.

In these views 1 indicates the door frame y to which the doors 2 and 3 are hinged. The door 2 is provided with` an overlapping` strip` 2 against which the door 3 abuts. The door 3 is provided with a spring latch `3 at its top and bottom for locking `the doors in closed position.

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A recess 4 is formed inthe roadway lead- "ing through the door andi extending toward either "side thereof. This recess is bridged `by the vertically movable platform 5. This platform is supported by means of the cam members G, secured to itsiunder faceandfslid- `mgly engaging the standards 7located in y the recess. The cams are slotted as `at 8 and Vtheseslots engage the bolts 9 carried by the standards. Springs 10 engage brackets 11 carried by the standards and have their upper ends engaging projections 12 of the cams tend to hold the platform in its upper position. `lfnclined pieces 13 arehinged to the ends of the platform for permitting thc vehicle to pass from the road surface` on to the platform. Levers 14 have their lower ends "pivotally` mounted tothe lower ends of the standards and these levers have inclined `upper portions and these portions are pivoted to the forked ends of the connecting arms` 15; A crank shaft 16 `isjournaled below; the platform and its adjustable crank 17 is connected with the inner ends of the connecting arms 15. These arms are formed of two pieces, each provided with 'a plu-` ralityl of perforations Eto receive connecting bolts so that the two pieces may be adjustably connected together.` This formation of the connecting arms is shown in detail in Filer. 5. The crank shaft 16 isprovided with a crank H18 at each end thereof` and these cranks are adjustably connected to the shaft by means of the bolts and plurality of holes .formed in the shaft. As `will be seen from Fig. 6 the shaft is also provided with a plu-` rality of holes to receive the bolt which holds the crank 17 in place. I prefer to make the sha-ft of tubingand as will be seen the three cranks may shaft. 1 n i y Alink 19 is adjustably connected. to each of the cranks 18 and a hook 2()` is adjustably connected to each link.

be adjusted imposition on said An angle bracket 21 `is connected with each door and the brace 21..of this bracket carries small` pulley 22 andthe outer. end

` of the bracket carries apulley 23.v A pulley 24:` 'isswuner to onewall adjacent the door opening. The cable25 has oneend connected with the hook 20 and passes upwardly throurh` the pulley 24: then `over the pulley 23ran over pulley 22and` this `cable is con-` nected withthe pair of cables 26 which pass over the guide pulleys 27 carried by thedoor 3 and the ends of these cables are connected,

j with the latches e. A SmauV Step es is yso placed onthe cable 25 between the pulleys Y 22 and 23 and this stop is so located with ref spect to pulley 23 that the firstpull on the pulley 25 will cause the cable 2G toy retract the'latehes 3f and then'said stopv will strike l`rthe vpulley and thus lock Ythe cable to the bracket so that further movement of the cable will cause the door to swing open.

Then the door 2 is no'tprovided with a latchthe cable for this door is simply attached to the door and the stop: 28 is not required., s

It rwill thus loe seen that as the vehicle Vmoves uponl the platform its weight will 'lower'the platform and the cams willvdepress the levers 14 and thus rock the crank shaft. This movement of the crank shaft will cause its crank armsl to pull on the cables and cause the cables tounlatch the doors and swingthem open as before stated. After Vthe vehicle leaves the platform the doors are swung sluit by means of the Weights 29 which are vattached to the doors bythe cables 30, said cables vpassing over the guide pulleys 31. Y

. In order to prevent the door 3 from closing before door 2 I place a rod'32 on the door 'lintelrwhich has one end bent down- Ward-lyY and curved as at 33 and it-s other end is bent'outwardly and provided with a rubber tip 34. The bar is so placed that the part 33 will be struck by door 2 as it swings shut whilefthe'partt willlprevent the door 3 lfrom-'closing to a sufficient degree to prevent the door 2 closing. VWhen the part 33 .Y of rod 32 is struck by the door 2 the rod 32 will bey rockedso. as'to move the part 34 out of the pathl of door 3V so that said door will closea'fter door 2.v j

Where theV doors are hung, to swing outfwardly as 'shownf in 1F ig. 8 vI place the bracket A on the outerl edge rof each door and have the cables pass through openings 36 formed vin the wall adjacent the door opening. vThe ends ofthe cables may be attached to'V theouter part of the brackets though .they mayY be passed over said brackets and' connected with the door. 'In any event the pull of the cable would beion the projecting part of the brackets. In this Ycase the means Vfor unlocking the door V conslsts ofan `L-ishape'd vlever 3*(A pivoted at the junction. oflt's armsto a bracket 38 which is vsecured atthe door adjacent its hinged edge. The end of the small arm of thi'sleverV is connected with thev latches'V by means ofthe cable 39` and the end of its long arm is located in the top of the link 19 so that as said link is ,swung 'outwardly by the movement of` thel crank 'shaft it will strike saidl'flongarni of theA lever so as to rotate `Vsaid lever. from its pivot and thus cause the cablY orfcab'l'e's to retract the latches and permit 'the doors to open.

jacent its hinged edge, a pair of pulleys on said bracket, one of which is located adjacent the outer, end thereof7 a vertically movable platform adjacent the door frame, a cable adapted to vbe pulled upon by the depression of the platform, said cable passing over the pulleys. ay latch for the door to which the cable is connected and a stop ou the cable located be-tween the pulleys` for engaging the outermost pulley to cause the pull on the cable to open the door.

2. In a device of the character described the combination with a door frame. of a door hingedly mounted therein, a \f'ertieall.\rv movable platform located adjacent the door frame. cam members carried by lrthe platform, levers operated by the cams. a crank shaft located below the platform, crank arms adjustably mounted on said shaft, adjustable connecting rods connecting the levers with said crank arnxs and door opening means connected with the said crank shaft.

3. .In a device of the character described. the combination with a door frame. of a door hingedly mounted therein7 a vertically movable platform located adjacent the door frame, cams carried by said platform. levers actuated by said cams, a crank shaft located below the platform, adjustable connecting rods connecting the shaft with the levers, said rods having forked ends eonnected with the levers and means for connecting the door with the crank shaft whereby the rocking movement of the shaft will cause the door to open.

4L. In a device of the 'character described. the combination with a door frame, of a pair of doors hingedly mounted therein and means for preventing one of said doors from lclosing before the other` such means conl Uf)

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