US1257172A - Door-operating mechanism. - Google Patents

Description

C. ALBRECHT. Jn.

DOOR OPERATING MECHANISM.

APPLlcAUoN man 1uLY1a,1917.

1,257,1'72- Patented. 11eb.19,1918.

2 SHEETS-SHEET l.

ATTORNEY C. ALBRECHT.I Jn.

DOOR OPERATING MECHANISM.

APPLICATION FILED IULY 18,1917. Ew., man 1191.111918.

2 SHEETS-SHEET 2.

l BY

1 -y 1 l/"x, l'. f f Oy M ATToRNEY INVENTOR 2 es A ZWechJ:

DOOR-OPERATING MECHAN ISM.

Specification of Letters Patent.

Patented Feb. 19, 1918.-

Appllcation led July 18, 1917. Serial No. 181,388.

To aZZ wkom z't may concern.' A

Be it known that I, CHARLES ALBRECHT, J r. a citizen of the United States, residing at Schleisingerville, in the county of fashington and State of Wisconsin, have invented new and and useful Improvements in -Door-Operating Mechanism, of which the following is a specification. g

My invention relates to door operating mechanism and has for its primary object to provide a door operating mechanism which is adapted to be actuated to open the door upon the depression of a `platform located in the roadway adjacent the door.

A further object of my invention is to provide-a door opening mechanism, the initial operation of which serves to retract the latches of the door.

With these and other objects in view which will be hereinafter fully described and particularly pointed out in the claims, the invention consists in the novel construction and arrangement of parts illustrated in the accompanying drawings forming a part of this specification, in whichz p Figure 1 is a top plan view of a door operating mechanism embodying my invention,

Fig. 2 is a vertical section in side elevation vof the same,

Fig. 3 is an enlarged top plan view of the pinion and se carrying the Oor,

Fig. 4 is anenlarged fronty elevation of the same.

Like characters of reference indicate like parts in the various views. i

In the drawings l designates a door frame upon 'the respective sides of which avpair of doors 2 and 3 are mounted for swinging movement by means of hinges 4. The doorV 3 is equipped with spring latches 5 at the upper and lower ends thereof which engage the lintel and the threshold of the door frame respectively to lock the same in closed osition against the jamb 6 of the door rame. 'I he door 3 is provided with an overg lapping strip 7 which extends over the ad- ]acent edge of the door 2, when the doors are closed, and serves to hold the door 2 against the jamb 6. A cable 8 is provided for each door and one end of each cable 8 is secured to its respective door near the free end thereof, the length of each cable being trained over a respective pulle 9 mounted yupon the lintel of the door. he cables are then trained over respective pulleys 10 mounted ent mechanism of the latch v on respective sides `of the door, and have weights 11 secured to their other ends which serve to normally retain the doors in closed position.

Mounted on each door near its upper end thereof is a bracket 12 upon which is mounted a pinion 13 disposed in axial alinement with respective hinges 4. -A second bracket 14 is mounted upon each side member of the door frame 1 adjacent the respective bracket 12 and a segment gear 15 is pivotally mounted thereon and adapted t-o mesh with the respective pinion 13, each segment having an arm 16 extending laterally therefrom.

A longitudinal recess 17 is formed in the roadway leading through the door and extending on either side thereof, said recess being disposed in the path of the wheels of a vehicle passin through said door. A rock shaft 18 exten s across the roadway just below the door and is mounted for pivotal movement in bearings 19 mounted. on the threshold of the door frame. Said rock shaft has a crank 20 formed thereon and 1ying in the recess 17, for purposes hereinafter described, and has arms 21 extending upwardly at either end thereof just in front of the respective side members of the door 1. The brackets 14 have arms 22 formed there- 4 on and extending outwardly in front ofthe respective arms 16 of the segment gears 15, pulleys 23 being mounted upon the outer ends of the respective arms 22 upon horizontal axes. Cables 2-t-are trained over respective pulleys 23 and have their upper ends secured to the free end of respective arms 16 of 'segment gears 1.5. The lower` portions of said cables 24 are trained over respective pulleys 25 andhave their lower ends connected to respective hooks 26, said hooks en-y gaging the holes in the ends of respective arms 21 of the rock shaft 18. It will be noted at this point that when the rock shaft 18 is pivoted tomove the 'arms 21 thereof away from respective side members of the door frame the cables 24 pull the arms 16 of the segment gears 15 outwardly, and the segment gears move the pinions 13 to open the doors 2 and 3.

Mounted within the recess 17 at either end thereof is a vertical standard 27, and cams 28 are mounted thereon for vertical sliding movement by means of pairs of studs 29, secured to respective cams engaging respective vertical slots 30 of the standards. A lateral projection is formed on each standard 27 and yhave studs 32 extending upwardly therefrom.' A coiled compression spring 33 encircles each stud and abuts the respective projection 31 with its lower end and an overlying portion of the respective cam 28 whereby each cam is normally retained in its upper position. A platform 34 is mounted for vertical movement in the recess 17 and has its respective ends secured to the cams 28, the upper surface of said platform lying slightly above the surface of the roadway when said cams are in normal position. A plate 35 is hinged to either end of the platform 34 and have. the free ends thereof resting upon the roadway whereby a vehicle Wheel wi easily roll upon the platform 34. A lever 36 has its lower end pivotally mounted upon the respective standard 27 and has a cam surface 37 formed thereon which is l adapted to be engaged by the respective cam 28, and the upper end of each lever 36` nectingrod 38, the opposite end of each connectingrod being pivotally, mounted upon the crank 20 of the rock shaft. When a vehicle wheel rolls upon the platform 34, the weight thereof depresses the platform 34 and the adjacent cam y28, the movement of the cam being transmitted to the respective, lever 36 j. through the cam surface 37 thereof, and the rock shaft 18 is operated through the medium-of the respective connecting rod 38 to open the doors, as hereinbefore described. It will be noted at this point that as the vehicle wheel moves along the platform 34 and reaches the center thereof both cams are depressed, and as the wheel moves toward the farther end the cam which was first depressed rises, the other cam being now depressed holding the door open as before. When the vehicle wheel passes olf` o f the platform both cams return to normal position and the doors are allowed to close under the influence of the weights 11.

The segment gear 15 of the door 3 has an upwardly facing cam -39 formed thereon, and the bracket 12 of said door 3 has an arm 40 extending outwardly therefrom upon which is pivotally mounted a lever 41, the outer end of which is adapted to be engaged by said cam 39. Cables 42 are connected to. respective latches 5 and are trained over pulleys 43 mounted upon the door 3, the

l other ends of said'cable being connected to the other arm of the lever 41. The cam 39 is 'so disposed upon the segment gear l15 that upon the initial opening movement of said segment gear the lever 41 is actuated to retract the latch 5 from engagement with the lintel and. threshold of the door frame, as -hereinbefore described, to allow the door to beopened. The teethy of this segment gear `15 are so dlsposed yrelative to `the respective pinion 13 that when the door 3 is closed the last tooth. of the segment gear has. passedA It is during this final move-` actuates the lever 41 to operate the latches 5, and as a result, the latches 5 are operated when the door 3 is at rest in its closed position'whereby the latches may be operated Without interference by the opening or closing movement'of the door.

The teeth lof thesegment 15 which-engages the pinion 13 of the door 2 do not disengage from the pinion when the door 2 is closed, and the closing movement of the doors 2 and 3 are so timed relative to each other that the door 2 closes slightly in advance of the door 3 whereby the strip 7 j does not interfere with the closing thereof. In order that the doors may always be adI justed properly relative to each other the arms 21 of the rock shaft are adjustable, each arm comprising two members, a lower member which is secured upon the respective end of the rock shaft, and an upper member 44 which is screw threaded upon the free end of the lower member, a nut 45 being threaded upon each lower member and adapted to be clamped against the adjacent end of the respective upper member to secure the same in any position.

Having thus fully described my'invention, I claim:

1. In a device of the 'character described, the combination with' a door frame, of a door hingedly mounted therein, a pinion mounted on said door, latches on said ldoor adapted to engagev said door frame when the door is shut, a segment gear mounted for pivotal movement on said door frame and adapted to mesh with said pinion, the disposition of said vsegment being such that when the door is closed the teeth of said gear are out of engagement with said pinion, a cam on said segment gear, a lever mounted on said door and having one end thereof engaging said cam and having the other end thereof in operable relation with said latches whereby said latches are retracted upon the initial opening movement of saidsegment, and means for operating said segment.

2. In a device of the' character described, the combination with a door frame, of a pair ofA doors hingedly mounted therein, a pinion mounted on each door, latches on one of said doors, an overla ping strip on said latch carrying door a apted to engage the other door to hold it shut, a segment gear mounted for pivotal movement on each of said door frames and adapted to mesh with respective pinions, the disposition of said segment of the latch carrying door being such that when the door has closed the teeth of said segment are out of engagement with said pinion, means in operable relation with said latches and said segment gear of the latch carrying door whereby said latches are retracted upon the initial opening movement of said segment, and means for operating said segments in unison after said segment of the latch carrying door engages its pinion;

3. In a device of the character described, the combination with a standard, a cam member movably mounted on said standard, a lever pivoted on said standard and having a cam surface engageable with said cam, and a spring engaging said standard and camfor normally retaining said cam in its upper position.

4. In a device of the character described, the combination with a door, a'standard, a cam member movably mounted on said standard, a lever pivoted on said standard and having a cam surface engageable with said cam, and a spring engaging said standard and said cam for normally retaining said cam in its upper position, and connections between said lever and said door whereby` saidL door is opened when said-cam is ldepressed. Y

5., In a device of the character described, the combination with ay door frame, of a pair of doors hingedly mounted therein, a pinion mounted on each door, a segment gear mounted for pivotal movement on each side of said door frame and adapted to mesh with respective pinions, a rock shaft having an arm on either side of said door frame, each arm having operable connection with its respective segment gear, and a depressible platform having operable connection with said rock shaft whereby said segment gears are operated to open said doors when said platform is depressed.r

6. In a device of the character described,

the combination with a door frame, of doors hingedly mounted therein, a pinion mounted on each door, a segment gearmounted for pivotal movement on each side of said door 'frame and adapted to mesh with respective Ahaving a cam surface engaged with its respective cam, springs for normally retaining said cams in their upper positions, a crank on said rock shaft, connecting rods having respective ends pivotally mounted on said levers and said crank, and a .platform mounted on said cams.

7 In a device of the character described, the combination with a door frame, of doors hingedly mounted therein, a pinion mounted on each door, a segment gear mounted for pivotal movement on each side of said door frame and adapted to mesh with respective pinions, a rock shaft having an arm on either side of said door frame, arms on said segment gears, pulleys mounted on respective sides of said door frame, cables trained over -respective pulleys and having their respective ends connected to respective arms of said segment gears and arms on said rock shaft, weights having operable connection with each door and adapted to normally retain said doors in closed position, a pair of standards, cam \members movably mounted on respective standards, a lever pivoted on eachostandard and `having-a cam surface engaged with its respective cam, springs for normally retaining said cams in their upper position, a crank on said rock shaft, connecting rods having respective ends pivotally mounted on said levers and said crank, and a platform mounted on said cams.

In testimony whereof I affix my signature.

' CHARLES ALBRECHT, JR.

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