Abstract An elevator has a pair of vertical and parallel T-section rails having central legs directed toward each other, forming a vertical plane, and formed with straight-across teeth. A car vertically displaceable between the rails has respective pairs of guides flanking the rails and restricting movement of the car horizontally only perpendicular to the plane. Respective sprockets rotatable on the car about axes perpendicular to the plane also have straight-across teeth meshing with the rail teeth. These sprockets lie in the plane and constitute the only restriction of horizontal movement of the car relative to the rails in the plane A drive synchronously rotates the sprockets to vertically displace the car along the plane on the rails. A manual safety can vertically displace the car along the rails. The guides are disks fixed to and sandwiching the sprockets. A brake on the car operatively engageable with the sprockets can arrest the car if the power fails or the like. An idler wheel between the rails above the car carries a cable having two ends, one of which is attached to the car. A counterweight is attached to the other cable end, the manual safety being coupled to the idler wheel.
An elevator for use in a multistory building, the elevator comprising: a pair of vertical and parallel rails forming a vertical plane and formed with straight-across teeth; a car vertically displaceable between the rails; an idler wheel between the rails above the car; a cable looped over the idler wheel and having two ends, one of which is attached to the car; a counterweight attached to the other cable end; respective sprockets rotatable on the car about axes perpendicular to the plane and having straight-across teeth meshing with the rail teeth, the sprockets lying in the plane; drive means for synchronously rotating the sprockets to vertically displace the car along the plane on the rails; a hand-operable actuating element in the building outside the car; and means including a transmission connectable between the element and the idler wheel for manually vertically displacing the car along the rails.
Claim 2
Dependent Claim
147 words
An elevator for use in a multistory building, the elevator comprising: a pair of vertical and parallel rails forming a vertical plane and formed with straight-across teeth; a car vertically displaceable between the rails; an idler wheel between the rails above the car; a cable looped over the idler wheel and having two ends, one of which is attached to the car; a counterweight attached to the other cable end; respective sprockets rotatable on the car about axes perpendicular to the plane and having straight-across teeth meshing with the rail teeth, the sprockets lying in the plane; drive means for synchronously rotating the sprockets to vertically displace the car along the plane on the rails; a hand-operable actuating element in the building outside the car; and means including a transmission connectable between the element and the idler wheel for manually vertically displacing the car along the rails.
Claim 3
Dependent Claim
33 words
The elevator defined in claim 1, further comprising means including guide disks fixed to and sandwiching the sprockets, flanking the rails, and restricting movement of the car horizontally only perpendicular to the plane.
Claim 4
Dependent Claim
18 words
The elevator defined in claim 1, further comprising: a brake on the car operatively engageable with the sprockets.
Claim 5
Dependent Claim
34 words
The elevator defined in claim 3 wherein the manual means includes control means connected between the element and the brake for releasing same when the element is connected via the transmission to the wheel.
Claim 6
Dependent Claim
26 words
The elevator defined in claim 4 wherein the transmission includes a pair of bevel gears engageable with each other to couple the element to the wheel.
Claim 7
Dependent Claim
13 words
The elevator defined in claim 4 wherein the transmission includes a coupling chain.
Claim 8
Dependent Claim
19 words
The elevator defined in claim 4 wherein the manual means is operable from the uppermost story of the building.