US1714297A - Elevator - Google Patents

Description

Patented May 21, 1929.

.UNITED STA CLARENCE CULLEN CRISPEN, 0F HARBISBURG, PENNSYLVANIA.

f ELEVATOR.

This invention relates to improvements in elevators particularly adapted for use in passenger service in private houses and other places where the space available for the installation of an elevator is limited.

The object of the invention is to provide a novel, simple and eflicient elevator wherein' a single, vertically-extending rail is combined with a car which is constructed to move vertically adjacent to one side of the rail and which is provided withV means co-operating with rail for supporting and guiding the car wholly at one side of the car, whereby the horizontal dimensions of the supporting and' guiding means for the car and of the car it-A self and of its path of vertical movement may be reduced to a minimum.

With the foregoing and related objects in view the invention consistsy of .the elements and the combinations of them hereinafter de-I scribed and claimed.

In the accompanying drawings, illustrating the invention,-

Figure 1 is a fragmentary sectional view of a portion of a house or building having an open stairway and showing my improved elevator installed therein.`

. tion of the supporting and guiding rail and the means co-operating therewith for supporting and guiding the car on line 4--4 of Fig. 5.

Figure 5 is a view similar to Fig. 4 taken on line 5-5 of Fig. 4 and including a portion of the car. n

Figure 6 is a horizontal section through the rail showing a top view of the parts shown in Fig. 5.

Referring to the drawings, 6 designates the car and 7 the vertically-extending supporting and Dguiding rail for the car. y

The car 6 may be of any suitable size and construction for its intended purpose. As herein illustrated, the car comprises a floor or latform 8, a back wall 9, side walls 10 and a ront wall 11 enclosing the space above the platform 8 for the accommodation of passengers. The f ront wall 11 vis made in the form of a hinged door to afford access to the car.

The rai1`7 may be of any suitable shape in applicati@ mea april 25,

1928. Serial No. 272,624.

cross'section.y It is preferably made lin 'channel form comprising a back wall 12, side walls -13 extending forwardly from the back wall 12 and flanges 14 extendingv toward each other from the forward portlons of the side walls 13 and forming laterally spaced front walls. The rail 7 maybe placed in vertical position in any desired location within a house or building and it may be secured to suitable parts of the house or building b screws 14 which extend through the back wa l 12 of the rail,as shown in- Fig. 3.

The car 6 is located adjacent to the forward side of the'rail 7 in close proximity thereto and the lower central portion of its back wall 9 is provided with a vertically elongated block 15 which extends into the channel rail 7 between the flanges or forward walls -14 thereof. The block 15, near the respective ends thereof, is provided with parallel, transversely extending members or eX- tensions 16 which are connected by a plate 17. The block 15, its extensions or member 16 and the plate 17 are secured together and to the back wall 9 of the car 46 by suitabley 'Y screws or bolts 18. The block 15 carries a set of upper and lower rollers 19 which are journaled on the respective ends of the block extensions or members 16. The rollers 19 are locatedv between the back wall 12 and the flanges or front walls 14 of the rail 7 and they are l adapted to engage the vopposinginner guiding surfacesv of the walls 12 and 14 to support and guide the car during the vertical move-i ment thereof.

The block 15 also carries a second set of upper and lower rollers 20 which are journaled on stud screws 21 projecting ixedly from the plate 17. These rollers 20 are placed between the late 17 and the body of the block 15 and t ey are spaced and lorollers 19 as clearly shown in the drawings, and they are adapted to engage the opposing inner Vguiding surfaces of the side walls 13 of the rail 7.

cated with respect to each other and to the The opposing inner guiding, surfaces ofl th side Walls 13 of the-rail 7 .are set at right angles to the opposing inner guiding surfaces of the back and front walls 12 and. 14 ofthe rail. The rollers 19 are mounted to turn on horizontal axes which are parallel .to their opposing walls 12 and 14, and the rollers 20 are mounted to turn on horizontal 'xes which are set at right angles to the axes of the rollers 19 and parallel to their opposing walls 13, so that the respective rollers may have proper rolling engagement with their respective opposing guiding surfaces.

One end portion of a cable 22 extendsA turn on the bar 7. The cable 22 passes from the pulley 24 down through a protecting casing or channel bar 25 secured at one side of the bar 7, and the -cable extends below the bottom of the bars 7 and 25 and is connected to the winding drum 26 of a cablewinding machine l 27. The drum 26 is carried by a shaft 28 which turns in bearings on a frame 29 and the shaft 28 is provided `with a -worm wheel 30 which engages a worm 31 on a shaft 32 which is actuated by an electric motor 33 to wind the cable 22 upon and unwind it from the drum 26. Thus it will be understood that when the motor 33 is actuated to wind the cable 22 upon the drum 26 the car 6 will be raised, and that when the 4motor 33 is actuated to unwind the cable from' the drum the car will be lowered.

In Figs.` 1 and 2 of the drawings I have shown the rail 7 secured at one side of an open winding stairway of a house or building in such position that the l"car 6 may be'raised and lowered between a lower floor 34 and an upper floor 35 of a yhouse and through an opening 36 in the upper floor 35 adjacent to the stairway, so thatpassengers may be carried by the car 6 in either direction from one oor to the other.

When the car 6 is down it rests` upon the lower floor 34, and when the car 6 is raised its platform 8 is brought to a position flush with the u per floor 35. When the car is 1n the raise position its door 11 is directly back of a door 37 which is provided in a railing 38 on the iioor 35 which guards the o ening 36 so that both doors 11 and 36 may e opened to permit passengers to enter or leave the car.

The cable winding machine 27 ma be conveniently located in the basement of the building or on the iioor below the floor 34.

The location of the car 6 at one side of the rail 7 with the platform of the car extending at right angles to the rail causes the car and its load to be supported not only by the cable 22 but also by the upper rollers 19 bearing against the front walls 14 of the rail 7 and the lower rollers 19 bearing against the back wall 12 of the rail during the raising and lowering of the car, and While the cable 22 holds it above the floor 34. The engagement of the rollers 20 with the side-walls 13 of the rail 7 prevents the block 15 and car 6 from tilting laterally during the raising and lowering of the car.

Suitable well known conventional electric switches may be employed at the two oors `34 and 35 and on the car itself for controlling the motor for raising and lowering the car 6.

To avoid accidents resulting from the breaking of the cable 22 or the occurrence of anA unexpected slackness therein, I provide a locking member or lever 40 which is pivoted, at 41, on the plate 17 and which is provided with teeth 42 on one end thereof adapted to be raised into engagement with one side wall 13 of the rail 7 and force the wheels 20 on the opposite side of the block 15 against the other side wall 13 of the rail and thereby lock the block 15 and car6 against downward movement. The inner arm 43 of the lever 40 is connected to one end of a spring 44 which is attached to the lower block member 16 by a U-bolt 45 and which tends to move the teeth 42 into engagement with the opposing side wall 13 of the rail 7. The teeth 42 are held out of contact with the rail 7 against the action of the spring 44 by an arm 46 which extends downwardly from the plate 23 and has its lower end connected to the lever arm 43. So long as the cable 22 is under tension it will hold the plate 23 up against the bottom of the top block member 16 and thus hold the teeth 42 out of contact with the rail 7. Should the cable 22 be accidentally slackened for any reason while the car 6 is above the floor 34, the slackening of the cable will permit the downward movement of the plate- 23 and arm 46 and thereby immedlately permit the spring 44 to move the teeth 42 into engagement with the opposing wall 13 of the rail 7 and thus lock the car 6 against downward movement.

I claim as my invention:

1. In an elevator, a vertically-extending ra1l having two parallel opposing verticallyextending guiding surfaces facing opposite directions, a car having a platform extending from .one side of the rail at right angles thereto, means connected to the car and havmg two bearing parts located one above the other and constructed to co-operate with said guiding surfaces to guide the car vertically, the upper bearing part facing the path of travel of the car, and engaging one of said guiding surfaces, and the lower bearing part `facing the opposite direction and engaging the other of said guiding surfaces, and means operable to raise and lower the car.

2. In an elevator, a vertically-extending rail having two pairs of parallel opposing vertically-extending guiding surfaces whichA are set at right angles to each other, a car having a latform extending at right angles to the rai means connected to the car and having twocsets of 'rollers constructed to cooperate with said guiding surfaces to guide the car vertically along the rail, one set of rollers being constructed to engage one of said pairs of guiding surfaces and to turn on horizontal axes which extend parallel thereto and the other set of rollers being constructed to engage the other of said pairs of guiding surfaces and to turn on horizontalaxes which extend parallel to the other of said airs of guiding surfaces, and means opera le to raise and lower the car.

3. In an elevator, a, vertically-extending channel rail, a car having a platform extending at rightA angles to the rail, a block secured to the car and extending into the channel of the rail, a set of rollers carried by the block and arranged to engage opposing surfaces of the rail, a second set of rollers carried by the block vand arranged to engage posing surfaces of the rail, a second set of upper and lower rollers whereof some are located above and some arelocated below rollers of the first named set, said second set of rollers being carried by the block and arranged to en age other opposing surfaces of the rail and aving their axes set at right angles tothe axes of the rollers of the first named set, and means operable to raise and lower the car.

5. In an elevator, a vertically-extending lchannel rail comprising a' back wall, yside walls extending forwardly from the sides of the back wall and flanges extending toward each other from the forward portions of the sidev walls and forming laterally spaced front extending at right angles to the rail,'a block secured to the car and extending into the channel rail between the front walls thereof, upper roller means carrier by the block between the front and back walls of the rail and constructed to thereof, lower roller means carried by the block below the upper roller means and constructed to engage the back wall of the rail, and means operable to raise and lower the car.

6. In an elevator, a vertically-extending walls, a car having a platform engage the front walls channel rail comprising a back wall, side walls extending forwardly' from the sides of the back wall 4 sidewalls and forming lateral y spaced front walls, a car having a platform extending at right angles to the rail, a block secured to the car and extending into the channel rail between the front walls thereof, upper roller means carried by the block between the front and back walls of the rail and constructed to engage the front walls thereof, lower roller means carried by the block below the upper roller means and-constructed to engage the back wall of the rail, additional upper and lower roller means carried by the block and constructed to engage the side walls of the rail, and means operable to raise and lower the car.

In testimony whereof I aix m signature.

CLARENCE C. C ISPEN.

and flanges extending toward each other from theforward ortions of the

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