US473036A

US473036A - Elevator

Info

Publication number: US473036A
Authority: US
Publication date: 1892-04-19
Anticipated expiration: 1909-04-19

Description

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BLEVATOR.

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` BLEVATOR. Y N0. 473,036. l Patent-ed Apr. 19, 1892.

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Nn. 473,036. PatenfefApr. 19, 1892.

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EL-BVATOR.

No. 473,036.' Patented Ap my l5.

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UNITED STATES PATENT OFFICE.

VILLIAM VEENSCHOTEN, OF HORNELLSVILLE, NEW YORK.

ELEVATO R.

SPECIFICATION forming part of Letters Patent No. 473,023.6, dated April 19, 1892.

Application filed April 23, 1891. Serial No.390,182 (No model.)

To a/ZZ whom t may concern:

` Be itknown that 1, WILLIAM VEENscHoTEN, a citizen of the United States, residing at Hornellsville, in the county of Steuben and State of New York, have invented a new and useful Elevator, of which the following is a specification.

`My invention relates to elevators, and has for its object to provide an elevator which may be used in private residences, stores, or other places where it is not convenient to apply steam or other power to operate the ordinary elevators now in use.

' In carrying my invention into practice I employ a double shaft, in which are arranged two cars hung upon a :rope or ropes in the usual manner, which rope is connected to the top of one car and passes over suitable sheaves or pulleys at the top of the double shaft, and is connected to the top of the car in the other side of the shaft. In this manner the cars are made to balance each other.

My invention further consists in a series of weights, which are housed in the space between the two cars, and in mechanism for connecting the said weights to either of the cars to balance a person who is ascending or descending in the other car, and also in means.,A for preventingthe accidental falling of they elevator, andy in means for permitting a person to connect such a weight only as will exactly or very nearly balance the weight of the person in the car.

The invention further consists of the mech-I anism illustrated in the accompanying drawings, the peculiar construction, combination, and arrangement of which will be hereinafter fully described, and the peculiar points of novelty particularly pointed out in the claims.

Referring to the drawings, Figure 1 is a vertical sect-ional view through an elevator shaft and cars constructed in accordance with my invention, showing the several devices in their normal positions. Fig. 2 is a vertical sectional view taken on the line z ,c of Fig. 1, looking in the direction of the arrow. Fig. 3 is a similar view of a portion of the car, taken on the line y y of Fig. 1, looking in the direction of the arrow. Fig. 4 is a similar view taken on the line Q3 of Fig. 3, looking in the direction of the arrow. Fig. 5 is a horizontal sectional view on the line w w of Fig. 3 with the false lar sliding bar in different positions. vis a detail perspective view of the angular latter are journaled sleeves or grooved pulleybottom removed. Fig. 6 isa sectional view on the line 'U fu of Fig. 5. Figs. 7 and 8 are horizontal sectional views on the line w w of Fig. 3, looking upward and showing the angu- Fig. 9

sliding bar. Fig. 10isafront elevation of the elevator-doors and attachments for returning the weights to their normal positions. Fig. 11 is a horizontal sectional view on the line t t of Fig. 10. Fig. 12 is a detail sectional View of the upper part of theelevator-shaft, taken on the line s s of Fig. 11. Fi 13 is a similar view on the line r r of Fig. I1. Fig. 14 is an elevation of one of the weightsV and the track upon which it is supported. Fig. 15 is a longitudinal sectional view of a modified form of weight. Fig. 16 is a detail perspectivel view of one endof one of the operatinglevers.

Similar numerals and letters of reference designate corresponding parts in the several views.

Referring now more particularly to Fig. 1, .it will be seen that my invention consists of an elevator-shaft divided vertically into two parts A and B, in each of which a

car

1 and 2,1respectively,is arranged to pass up and down. At the top of the shaft two pairs of

parallel beams

3 and 4 are arranged atright angles to each other, the lower pair 3 serving as central supports to the upper pair 4, upon which wheels 5, one of which is situated over each .of the parts A and B of the shaft. A rope 6 of wire or other suitable material is connected at its ends to the tops of the

cars

1 and 2 and passes over the wheels 5, thus suspending the two cars in the opposite sides of the shaft, so that they will balance each other, and when one descends the otherY will ascend.

The elevator-shaft is divided by two vertical beams 7, which in practice will be made` about nine inches wide. These beams are placed centrally in the shaft'at the front and back thereof, and the inner sides of the cars slide against their edges. In the space loetween the two beams 7 and centrally between the cars are arranged vertical beams 8, which stand at suitable distances apart and are of such width as to occupy about one-third of the space between the opposing sidesof the IOO cars. Upon one side of each of the beams 8 are secured brackets 9, which terminate in rails 10, upon which the weights 11 12 13 are supported, and the position of the said rails 10 is such as to be about midway of the height of the cars when standing at their upper and lower positions, as shown in Fig. 1. Extending from the sides of the lcars at about midway of their height are rails 14, corresponding in shape, size, and number with the rails 10 and in such position as to come opposite the ends of the said rails 10 and form continuations thereof when the cars are standing in their normal positions. The weights 11 12 13 are oblong and pointed at their ends and are provided about midway of their -length with recesses 15, which extend through from side to side of theweight and have anti-friction rollers '16 journaled in their. upper parts, which roll upon the tops ofthe rails 10. The rails may be grooved to receive the rollers 16, if desirable. Two similar levers 17 18 are pivoted to each of the beams 8 at the points 19 at equal distances above and below the central point between the upper and lower rails l0, and the short arms 2O of the levers 17 18 are pivoted together, as at 21, thus forming a compound lever, the pivot working in a slot in one of the levers, so that when the lower end of the lower lever is pushed to one side the upper end of the upper lever will move a corre. spending distance to the same side, as shown The upper and lower ends of the compound lever 17 18 extend above and below the rails 10, and their endsy are formed, as shown in Fig.16, with a lug or,

in dotted lines in Fig.l.-

`arm'22, proj ectingi'nwardly from the edgesvto embraceone of the weights. Thus by moving one end of one of the levers, as 17, sidewise the weight embraced by the arms ofthe lever 18, connected thereto, can be rolled ott the rail l0.

Through the sides of thev cars, next to the beams 8, pass the angular slidingbars 23, (more clearly shown in Fig. 9,) which are arranged to slide in suitable guides 24. These angular sliding bars 23 are right-angular in cross-section, and when in operative position one side,

` opposite to the compound levers 17 18, and

when they are pushed outwardly they will pushV the end of the lever with which they come in contact away from -thecan A sliding bar 32 is arrangedin suitable supports 33 just below the cut-away portion 27, but in the path of the shoulder 28 upon the vertical side of the angular bar 23, and is provided with a `series of notches 34 along its upper edge,

which when the bar is moved in thedirection of the arrow a will pass under the vertical sides ofthe sliding bars 23 to allow the shoulders 28 to pass therethrough. The notches 34 are arranged at such distances apart that only one of the notches can be in position to allow a shoulder 2810 pass through at a time, and when in its normal position, as shown in Fig. 3, the bar 32 will prevent any of the angular sliding bars 23 frombeing pushed outwardly against the levers. i

In the bottom of each car is arranged a series of levers consisting of two parallel levers 35, placed centrally across the car and pivoted in a bracket 36, projecting upwardly from the bottom of the carnear the outer side thereof. The levers 35 are connected together and held at a suitable distance apart by

rods

37, 38, 39, and 40, the rod 37 extending through the levers into the bracket 36 and forming the fulcrum. The rod 38 extends through the ends of the short arms of the levers `35 and has pivoted upon its ends a pair of levers 41, the opposite ends of which are pivoted in the opposite or inner corners of the car, as at 42, Fig. 5. Two shorter levers 43 are pivoted in the' outer corners 44 ot' the car and have their opposite ends pivoted to the centers of the levers 4l, as at 45. Studs 46 project upwardly from the levers '41 and 43, upon which the false bottom 47 is supported. From this construction it will be understood that if a person steps upon the false bottom 47 the tendency will be to depress the short arms of the levers 35 and elevate their longer arms.

A series of weights 48 49 50 of unequal weight are arranged between the levers 35 upon the rod 39 near the, ends of the long arms of the said levers. rIhese weights are of different sizes, as shown in Fig. 3, and have slots 51, through which the rod 39 passes, the slot 51 in the smallest weight being of such length `that the weight will rest upon the-bottom of the car and also in, contact with the rod 39, to be raised thereby at its first upward movement. The slot 5l in the next size weight is longer, so that it will be lifted by the rod 39 after it has raised the smallest weight a short distance, and the slot in the next weight is still longer, and so on to the end of the series.

VThe weights are of such weight that should a light person step in the car the smallest weight will be raised, and they are so graduated that the heavier the person is the more `weights will be raised, thus raising the long arms of the levers 35 a distance determined by the weight of the person in the car. Upon the car below the sliding bar 32 and having its vertical arm connected with the said bar 32, ias at 54. Thus when the rod 52 is raised by lthe lever 35 it will turn the bell-crank lever '53 and slide the lbar 32 a distance correspond- IOO ITO

ing to the movement of the levers 35, which latter is determined by the weight of the person in the car.A The notches 34 in the bar 32 are so placed that when a light person steps in the oar the movement of the bar 32 will be sufficient to move one of the notches in line with the sl1oulder28 upon one of the angular sliding bars 23, thus allowing that bar to bel moved outwardly, but preventing any of the others from moving. Should a heavier person step into the car, the bar will be moved a little farther, thus bringing another notch 34 in line with the next angular bar 23, but moving the first notch out of line with the lirstbar 23 and permitting the second bar 23 only to be operated. The purpose of this will. be explained farther on. To enable a person to operate the sliding bars 23,a lever 55 is fulcrumed in a bracket 56 over each of the said bars 23 and hangs through a slot 57 in the guides 24 against the inner end of the angular bar 23, the lower end of said lever terminating in a handle 58, by means of which the bars 23 may be moved outwardly,'as will be readily understood. The angular bars 23 are returned to their normal position by means of a spring 59, (better shown in Figs.7 and 3,) which-is arranged within the angle formed by the sides 25 and 2G of the bar and connected at one end to a lug 60 in the inner end of the said bar and atits other end to the side of the car. The tension of the spring is such that it will hold the sliding bars 23 in their normal positions, as shown in Fig. 7, returning them by expansion from an outward position and by contraction from an inward position. Above the angular bars 23 is arranged a sliding bar 61, supported in suitable brackets 62 and provided with downwardlyprojecting lugs 63, corresponding in number and position with the angular bars 23 and arranged to rest against the edges of the horizontal sides 25 of the said angular bars. When the angular bars 23 are in their normal positions, the lugs G3 rest against the cut-away portion 29 of the angular bars, and when one of these bars is moved inwardly or outwardly the inclined surface 30 or 31'will come in contact with one of the lugs 63 and slide the bar G1 in the direction of the arrow b. A bellorank lever G5 is pivoted above one-end of the sliding bar 61, and the vertical arm thereof is connected with the said sliding bar, as at 66. To the horizontal arm of the bell-crank lever 65 is pivoted a rod 67, which extendsdownwardly and is pivoted at its lower end to the horizontal arm of a bell-crank lever 63, pivoted to one side of the car near the bottom thereof. The vertical arm of the bell-crank lever G8 depends nearly to the bottom of the car and has pivoted to the lower end thereof a rod 69, which extends toward the opposite side-of the car and is connected with the inner end of a spring-actuated bolt 70, which projects through the side of the car, as shown in Fig. 6. A similar spring-actuated bolt 71 is arranged in the opposite side of the oar to upper doors are shown.

project through the same side as the bolt 70, (see Fig. 5,) and to the inner ends of each of the bolts 7 0 and 71 are pivoted

levers

72 and 73, respectively, each of which levers extends toward the other till they meet and are pivoted together, as at'74, midway between the Y ends of the bolts and 71. The

levers

72 and 73 are fulcrumed to the bottom of thev car at equal distances upon each .side of the pivotal point 74, as at 75. Thus when one of the bolts-say 7 O-isdrawn inwardlythelevers 72 andV 73 will be moved into the position shown in dotted lines in Fig. 5 and will draw the other bolt 71 inwardly a corresponding distance.

From the foregoing description, takenin connection with Figs. 3, 5, and-6 of the drawings, it will be understood that when the sliding bar G1 is moved in the direction of the arrow b itwill, through the bell-crank

levers

65 and 63 and the

rods

67 and 69, draw the bolt 70 inwardly, and,through

thelevers

72 and 73, actuate the bolt 71 in the same manner. l 'lVhen the angular bar 23 resumes itsnormal position, the springs 76 upon the bolts 70 and 7l will return the bolts, and, through the aforesaid connections, the sliding bar 61 to their normal positions. l

When the elevator is operated, as will be hereinafter explained, one'of the weights 1l, 12, `or 13 is moved from its rail 10 onto the adjacent ral 14 on one of the cars, and in order to return the weight so moved to its normal position a pair of oblong frames 77 is arranged to inclose the beams 8, the

weights

11, 12, 13, and the compound levers17 and 18 at their upper and lower extremities. These oblong frames 77 are arranged between the front and back beams 7 7 to slide upon guides 73. They are made about two-'thirds of the width between the two cars, or wide enough to allow one of the said levers and weights to move to one side within the said frames, while the others remain in their normal position.

ICO

Thus should one of the compound levers 17 Y.

13 be in the position shown in dotted lines in Fig. 1 the frames 77 will occupy the position in which the upper one is shown in said figure. Now if one of the frames be moved into the position in which the lower frame is shown it `will be obvious that it will bring the compound lever 17 18 to a vertical position, and thus move the corresponding weight to its normal position. As this should be done every time a person leaves the car, I have arranged mechanism in connection with the door by means of whichl the weights will be moved to their normal position when the door is opened. This'mechanism will now be described. i

The doors SO are hung upon a facing-piece 81, secured upon the face of the front beam 7, as shown in Figs. 1 0 and 11, in which the two Through the beam 7 and facing-piece 81 are formed slots 82, in which are pivoted levers 83, the long arms of whichextend into short slots in the front end inner edges of the doors 80. Upon the doors are lugs 86, having their outer surfaces inwardly curved and in proper position to impinge against the ends of the rods 84 when one of the doors isopened,and thus move the short arm of the lever'83 away from the said door, turning the leverinto the position shown in dotted lines in Fig.11 and moving one end of the oblong frame 77 toward the car on the side of the shaft where the door was opened. In order to prevent binding, it is necessary that both ends of the frame 77 be moved simultaneously, and to accomplish this a T-lever 87 is pivoted in a recess 88 in the beam 7 at the rear of the elevator-shaft. The arm 89 of said T-lever extends downwardly and is pivoted in a slot 90 in the rear end ofthe oblong frame 77. The two horizontal arms of the T- lever 4extend into the opposite sides of the elevator-shaft and are connected by rods 9l with bell-crank levers 92 in the upper rear part of the shaft. The bell-crank levers 92 are connected by rods 93 with bell-crank levers 94 in the front part of the shaft, which latter are in turn connected by link-rods 95 with opposite ends of the horizontal arm of a T-lever 96, pivoted upon the facing-piece 81. To the depending arm of the T-lever 96 are pivoted two rods 97, which extend horizontally in opposite directions through guides 98 upon the facing-piece 8l and terminate in` proper position to be operated upon bythe lugs 99, which aresimilar to the lugs 86 and act upon the rods..97 in the same mannerthat the last-named lugs act upon the rods 84.

From the foregoing it will be understood that when one of the doors is opened the

lugs

86 and 99 will impinge against the

rods

84 and 97 on that side of the facing-piece 81 and will move the lever 82 to slide the front end Aof the frame toward the door which is being connection, with the lower doors to operate the lower frame 77; but in this instance the devices will be invertedto bring them below instead of above the operating parts, as shown.

in Figs. 1 and 2. The hinges 100 may be placed at the base of the lugs 86and 99 to strengthen the door at these points, as shown in Fig. 10.

To prevent the weights 11 12 13 from being moved off of the rails 10 when there is no carin position to receive them, I provide the plates 101, pivoted between the edges of the front and rear beams 7 just beyond the upper and the distance the sliding bar 32 will move.

lower ends of the compound levers 17 18, the upper pair being pivoted so that when in a horizontal position their outer edges will be heavier than their inner edges. Pins 102 are placed in the beams 7 just above the inner sides of the upper pair of plates 101, against which these sides rest when the said plates are in their normal horizontal position, the heavier outer edges of the plates keeping them in this position, as shown at e' in Fig. 1. By inspection of the figure it will be seen that while the plates 101 are in a horizontal position the weights cannot be moved off of the rails 410 on that side of the shaft. When the car comes up, it will lift the outer heavy edge of the plate 101, thus turning the plate to a vertical position out of the way of the weights, as shown at d in Fig. 1. The plates 101 in the lower part of the shaft operate in the same manner, except thatthey are heavier at their inner edges and rest upon the pins 102. Thus (shown in Fig. 11,) having an' inwardly-pro7 jecting lug 106, which is in position to be engaged by inclined surfaces upon a plate or lug 107, secured in proper position upon the front of the car, and be withdrawn thereby when the car arrives at its stopping place, as will be readily understood. spring may be used to close the door.

The operation of the invention is as follows: When in their normal posi-tion, one of the cars is at the top and the other at the bottom of the shaft, and they are held in this position by the bolts 70 and 7l, which take into recesses 108 in the sides of the shaft, as shown in Fig. 1. The weights 11 12 13 are supported upon their respective rails 10, and the rails 14 of the cars are in position to receive the weight therefrom. If a person wishes to ascend, he steps into the lower car. As soon as his weight is upon the false bottom 47 thereof it .will cause thelevers 35 to raise one or lnore of the weights 48 49 50, thus determining the distance the levers 35 will rise, and consequently For instance, should a light person enter the car the lighter weight only would be raised, thus causing the levers to move far enough to bring the rst notch 34 in the bar 32 under its re- IOC Any suitable K IIO spective angular bar 23, allowing that bar 1 only to be moved. Should a heavier person enter the car, two or more weights will be raised, thus moving the lever a greater distance and causing the second or third notch 34 to move under its respective bar 23, thus allowing the second or third bar 23 to be moved. The weights 11 12 13 are arranged so that the compound lever 17 18, embracing the lightest weight 11, will be opposite to the bar 23, which is released by the weight of a light person, and the next heavier weight 12 will have its compound lever opposite to next bar 23, and so on to the end of the series, which may consist of any number of weights and sliding bars 23. From this explanation it will be understood that the sliding bar 23, which 1s released by the weight of the person in the car, will be opposite to the compound lever 17 18, which embraces a weight corresponding, or nearly so, to the weight of the person. The person notes which of the bars 23 is released, and by means of the lever 55 over said bar pushes that bar outwardly. This will force the lower lever 18 of the pair away from the lower car and bring the compound lever and the weight embraced thereby into the position shown in dotted lines in Fig. 1, rolling the weight over upon the rail 14 of the opposite car and carrying both of the frames 77 over to that side. This will place suicient weight upon the upper car to balance, or nearly so, the person in the lower car. When the sliding bar 23 is moved outwardly, it will slide the bar 61, as has been hereinbefore explained, and withdraw the bolts and 71, and the lever and weight moving against the other car will move one of the sliding barsV 23 of that car inwardly, which movement will alsoactuate the bar 61 to withdraw the

bolts

70 and 71 of that car, thus releasing the two cars. The person wishing to ascend grasps the rod 103 and by pulling thereon causes the car in which he is to ascend, while the other descends, the cars being so nearly balanced by each other that only a slight effort is required to raise or lower them. The length of the rope '6 must be` such that when one car rests upon the air-cushion 104 the other one will stop at the upper floor. As soon as the car has started to move the lever 55 may be released, and the spring 59 in the sliding bar 23 will return the said bar to its normal position, thus allowing the bolts 70 and 7l to spring outwardly and slide along the inner sides of the shaft until the cars arrive at the end of their movement, when they will take into their respective recesses 108 and hold the cars, as before. As the cars come to a stop the plates 107 will withdraw the spring-latch 105 and allow the door to be opened, and when this takes place the corresponding frame 77 will be moved to that side of the shaft and return the weight to one of the rails 10 in the lower part of the shaft, leaving the elevator in position for the person to descend or for another person of different weight to ascend. When the person wishes to descend, the weight is in the lower part of the shaft, and by operating the lever 55 he moves the weight onto the other car and releases the cars as before, then grasping the rod 103 lowers the car he is in to the bottom of the shaft, when the same operations will take place to secure the cars in their positions and return the weight to its normal position.

Although only three of the weights 11 12v 13 are shown and described, it will be obvious that any number that can be accommodated between the front and rear beams 7 7 may be used, and they may be graduated to suit the persons most liable to use the elevator. By

having the weights to differ about twenty or twenty-live pounds they may be arranged to -It is formed in two parts, the main or lower part 110 having a spindle 111 projecting upwardly from the center thereof and the cap for upper part 112 being recessed longitudinally to receive the spindle 111, by which it is heldin place. When it is desired to increase the weight, the cap 112 is removed and fone or more weights 113 114 115, which are made to fit upon the spindle, maybe placed thereon, after which the cap is returned to its place.

Having thus described my invention, what I claim, and desire to secure by Letters Patent, 1s-

1. In an elevator, the combination of ashaft, two cars suspended in opposite sides of said shaft to balance each other, rails 10, secured to vertical beams in the space between said cars,weights suspended upon the rails 10, antifriction rollers in the weights to roll upon the rails, compound levers fulcrumed upon the said vertical beams and having arms at their ends to embrace the weights, and mechanism whereby the compound levers can be operated from one car to connect a weight to the other car, substantially as described.

2. In an elevator,the combination of a shaft, two cars suspended in opposite sides of said shaft to balance each other, rails 10, secured to vertical beams in the space between said cars, weights suspended upon the rails 10, anti friction rollers in the weights to roll upon the rails, compound levers fulcrumed upon the said vertical beams and having arms at their ends to embrace the weights, rails 14 upon the cars in position to receive the weights from the rails 10, and bars to slide through the sides of the cars and impinge against the compound levers to move the Weightsrfrom their rails 10 onto the rails 14 of t-he opposite car, substantially as described.

3. In an elevator, the combination of the shaft, two cars suspended in opposite sides of said shaft to balance each other, rails 10, se-

cured to vertical beams in the space between IOO IIO

said cars, weights vsuspended upon the rails 10, anti-friction rollers in the weights to roll upon the rails, compound levers fulorumed upon the said vertical beams and having arms at their ends to embrace the weights, the rails 14 upon the cars in position to receive the Weights from the rails 10, the spring-actuated bars 23, arranged to slide through the sides of the cars and impinge against the compound levers to move the weights from their rails 10 onto the rails 14 of the opposite car, and levers 55 to operate the spring-actuated sliding bars 23, substantially as described.

4. In an elevator-car, as herein described, having sliding bars 23, a series of levers arranged in the bottom of the car, a false bottom resting upon said levers, a series of weights arranged to be raised by the levers when weight is placed upon the false bottom, a rod 52, a bell-crank lever 53, and a sliding bar 32, having notches 34 in its upper edge, all suitably connected with the said system of levers in the bottom of the car, so that when weight is placed upon the false bottom it will move the notches 34 to register with sliding bars 23, substantially as described.

5. In an elevator-car, as herein described, angular sliding bars 23, suitable guides for said bars, inclined surfaces 30 and 31 upon said slidingbars23,a sliding bar 61, arranged above the bars 23, lugs 63 upon the sliding bar 61 in position to be operated on by the

inclined surfaces

30 and 31, spring-actuated bolts and 71, and connections between the said bolts and the sliding bar 61, by means of which when the latter is moved bythe

inclined surfaces

30 or 31 the said bolts will be withdrawn, substantially as described.

6. In an elevator, the combination of a shaft divided into two parts, a car arranged to slide in each part and connected together, so as to balance each other, a series of weights supported between the two cars, means for enlarging the weights, mechanism by means of which the weights may be attached to one of the cars, frames 77, inclosin g the said weights, and mechanism connecting the frames with the doors, so that the frames will be operated to returnV the weights to their normal positions, substantially as described.

7. In an elevator, the combination of a shaft divided in two parts, cars arranged one in each part and connected together to balance each other, a series of rails 10 in the space between the two cars and a series of corresponding rails 14 upon the cars, a series of weights of unequal weight supported upon the said rails, anti-friction rollers 1G in the weights to roll upon the rails, compound-levers having arms to embracev the said weights and fulcrumed between the upper and lower set of rails 10, sliding bars 23 in the cars, guides for said bars, levers 55, by means of which the sliding bars 23 may be pushed outwardly to cause the compound levers to roll the weights from the rails 10 to the rails 14 upon one of the cars, 'sliding bars 32, which control the sliding bars23, a system of levers in the bottom of the car, connected with the sliding bar 32, so that theweight of the person will release the proper bar 23, a sliding bar 61, having lugs operated by the bars 23, bolts 70 and 71, connected with the sliding bar 61, so as to be withdrawn when the said bar is operated, frames 77, inclosing the Weights and connected with the elevator-door to return the weights to their normal position when thedoors are opened,

spring-latches upon the doors, plates 107 upon the cars to Withdraw the latches when the car has arrived at the proper position, and rod 103, by which the occupant of the car can operate the elevator, substantially as described, for the purpose specified.

S. In an elevator, the combination of a shaft, two cars suspended in opposite sides of said shaft to balance each other, rails 10, secured in the space between said cars, weights suspended on the rails 10, compound levers having arms at their ends to embrace the weights, and mechanism whereby the compound leyers can be operated from one car to connect a weight to the other car, substantially as described.

9. In an elevator,the combination of a shaft, two cars suspended in opposite sides of said shaft to balance each other, rails 10, secured in the space between said cars, weights suspended upon the rails 10, compound levers having arms at their ends to embrace the weights, rails 14 upon the cars in position to receive the weights from the rails 10, and bars to slide through the sides of the cars and impinge against the compound levers to move the weights from their rails 10 onto the rails 14 of the opposite car, substantially as described.

In testimony that I claim the foregoing as my own I have hereto affixed my signature'in presence of two witnesses.

WILLIAM VEENSCHOTEN.

Witnesses:

MILES W. HAWLEY, GEO. W. IfIUfrcHINsoN.4

IOO