CUMPLEIN DITUC,
Year: 1899

page_text: Date of Application, 17th Jan., 1899-Accepted, 22nd Apr.. 1899
CUMPLEIN DITUIFICATION,
Improvements in and relating to Elevators.
1. CHARLES DAVID SEEBERGER, of 1827, Michigan Avenue, Chicago, County of
Cook and State of Illinois, United States of America, Gentleman, do hereby
declare the nature of this invention, and in what manner the same is to be per-
formed, to be particularly described and ascertained, in and by the following
statement:-
My invention applies to that class of elevators in which a series of intercon-
nected trucks or steps are moved over tracks through part of their extent hori-
zontal, through part inclined; the said trucks or steps remaining individually
horizontal throughout such movement.
My invention consists of certain improvements upon several features of such
an elevating mechanism. The drawings illustrate only those parts thereof to
which the constructions which constitute my invention are applied.
Fig. is a side elevation of a portion of the tracks and of the trucks of my
elevator.
Fig. 2 is a plan view of the structure shown in Fig. 1.
Fig. 3 is a detail elevation partly in section of the guide and guide rollers of
the sprocket chain bars.
Fig. is a plan view of the structure shown in Fig. 3, with the guide rollers
omitted.
Fig. 5 is a plan view of a step or truck.
Fig. 6 is a front elevation thereof with the risers omitted.
Fig. 7 is an end or side elevation thereof showing the convex risers.
Fig. 8 is a plan of a passage-way and platform for entering upon the elevator.
Fig. 9 is a side elevation of a portion of a movable balustrading and hand rail.
Fig. 10 is a vertical section on the line 10-10 of Fig. 9, showing also the
track casing below in section on line 10--10 of Fig. 1, and with the wheels and
guide rollers omitted.
Fig. 11 is a horizontal section of the balustrading taken on such a line as 11-11
in Fig. 9.
Fig. 12 is a front elevation of a step showing its connections with the support-
ing wheels, etc., and with the guide rollers, etc.
Fig. 1 is an elevation, somewhat diagramatic in its nature, of my improved
elevator arranged in a double spiral for ascending and descending between three
floors and
Fig. 14 is a similar plan view.
Referring to the drawings by letter. A represents one of the trucks or steps:
A the tread thereof and A2 A3 and A+, three brackets secured below the said
tread, A, both in front and in rear thereof, in such a way that the outer edges
of the said brackets project beyond the partially overlapping edges, a. of the
tread A. Between the said brackets and the said overlapping edge a, and resting
upon the said brackets, and rigidly secured thereto, I place a bar B, which serves
as a bed or support for the riser B. The riser B consists of the horizontal por-
tion B. and the depending portion or riser proper B³. The horizontal portion 13

page_text: rests upon the bar, B, projecting under the overlapping edge, a, of the tread;
and is thereby pivotally secured by a pivot, b, passing down through the parts a,
12, B, and the central bracket A³. The depending portion 133 of the riser is
constructed to curve outward from the center of the step, i.e. is made convex,
substantially as shown in Fig. 7. Near the upper edge of the riser is preferably
located a horizontal strip of rubber, or other elastic material, 1, partly counter-
sunk in the said riser.
The operation and advantages of the parts hereinabove described may best
be stated at once. When the trucks or steps, A, are traveling horizontally ant
in a straight line the corresponding strips or nosings, b, of the adjacent steps
are in contact with each other; and by their elasticity remain in contact in spite
of slight changes in distance between the adjacent steps arising from their move-
ment, obviating the possibility of the dress or person of the passenger, by any
chance, becoming caught in any space which might otherwise be formed between
the steps.
When the steps commence their ascent along one of the inclined portions of
the tracks, the rear riser of each step successively rises in relation to the front edge
of the following step; the trucks assuming the position shown in dotted lines
en the left-hand side of Fig. 1, where they may be considered as moving in the
direction of the arrow. The front nosing of each step bears against the lower
edge of the rear riser of the step next preceding. In such position also the
elasticity of the nosing strip forms a close-fitting connection between each
two adjacent steps.
The depending portion of the riser 13 is formed curving outward, or convex, as
shown in Fig. 7, in order that, during the transition of the steps from their
position with relation to each other upon the horizontal tracks, to their position
upon the inclined tracks, there shall at no time be formed any space between the
rear riser of one step and the nosing of the next succeeding; with this construc-
tion, the said nosing will continue in contact with the said riser throughout the
transition. The particular curve of convexity depends upon the mounting of
said steps, their interconnection, etc., and will have to be worked out in each case.
The essential principle is that the said riser should be curved, and that such curve
should be convex.
When,
When the steps run upon tracks which are curved, the said steps will usually
be made narrower upon the inside than upon the outside of such curve.
however, they air to run upon two or more curves of different radii such adapta-
tion would not be sufficient. It is necessary to provide a means by which the
adjacent steps will remain in contact along their entire edges upon all of such
nives. In such a case the pivotal mounting of the riser B₁, as hereinabove
described, will permit of the risers, and the nosings carried thereby, automatically
adjusting themselves to such changes in curve, and preserving continuous close
contact between the adjacent stops. The effect of the interposition of the wooden
beam B between the brackets A2, and the horizontal portion 132 of the riser, is
to prevent grating of the metal parts upon one another, and so deaden sound
and reduce friction in these parts.
In Figs. 13 and 14, I show an elevation and a plan view respectively of my
elevator as arranged in a double spiral for ascending and descending between
three floors. The construction and arrangement of the tracks therein shown are
fully described and claimed in my application filed simultaneously herewith, and
will be described here simply for the purpose of illustrating one form of tracks
with varying curves for which the mechanism of the present application is
especially adapted.
To explain the direction of the movement of the elevator at the different points
of its course as exhibited in these figures, we may suppose that it is boarded by
a passenger at the point 1. where it is traveling horizontally along the lowest
Hoor shown, which may be called the first floor. The passenger is carried a short
distance horizontally to the point 2; here the ascent begins, represented by the

page_text: At 14
curve, 2-3-4-5, at the last of which points he reaches the second floor. He
is now carried horizontally over the second floor along the curve, 56-7-8,
which does not appear in Fig. 13, since it is on the same level with and behind
the curved portion, 17-18-19 -20, hereinafter referred to. At the point S
the ascent from the second to the third floor commences, represented by the
curve 8-9--10- 11; at the point 11, the passenger reaches the third floor, and
is carried horizontally over the same along the curve 11--12 13 14.
begins the descent to the second floor, represented by the curve 14-15-16-17;
from the point 17, the passenger is transported horizontally over the second floor,
along the curve 17-18--19-20; this curve being inside of and parallel with
the curve 56-7-8, herein above described. From the point 20 the descent
to the first floor commences, and is represented by the curve 20-21--22-23;
at the point 23 the passenger reaches the first floor again, and is carried along
the horizontal curve 23-24, etc., back to the original starting point, 1. This
curve 23-24-1-2, being in great part vertically underneath the third story
curve 11--12--13-14, is represented in dotted lines, chiefly in Fig. 14. The
arrows in the two figures are placed in corresponding positions, and indicate the
directions of the movement above described.
As particularly shown in Fig. 7 the tread of each step, broadly considered,
consists of the central part, or tread proper, A', and the two horizontal por-
tions B2B of the two risers attached thereto. This construction has this
further advantage; the slight elevation of the central part, ¹, of the tread,
represents that portion of the tread upon which it is wholly safe for the passenger
to stand; and by the difference in level between A and 132 the passenger will
instinctively feel whether he is on or off the principal part of the step.
At each end or side, as it may be considered, of each step, I form a depending
bracket C, terminating in the upright arm C, which carries the horizontal
wrist C. This offset connection between the wrist (, from which the step is
supported, and the step itself, is for the purpose of permitting the side II³, of
the casing, H, later described, to extend down below the level of the tread ¹
of the step; otherwise, along the ascending travel of the steps the rear portions
of the yoke hereinafter described, the rear wheels and rollers, and that part of
the track upon which said wheels travel, would be exposed and apt to catch the
dress or person of a passenger; as well as to permit the entrance of dirt into
these parts.
The wrist ( terminates outwardly in a yoke, D. This yoke is preferably
formed of a forward and of a rearward extending arm, D and D3, respectively,
the adjacent ends of the said arms being secured upon a sleeve, D³, with which
they may be cast integral; their connection with such sleeve and with each
cther may be further secured by the bolts or pins, d. The wrist ( is igidly
keyed in the sleeve D³.
When the trucks move in a single vertical plane, that is, when the tracks are
not curved, the arms D1 and D2 may be rigid and unbroken out to the wheels
and rollers which they carry. When, however, the trucks are to travel upon
curved tracks, and particularly when the curve of such tracks varies, I pivot
the outer portions, and 2 of the said armis D1 and D2, as at and d
respectively. The pivoted part is provided with bearings for a stub-axle, on
which is mounted a wheel D. In an upward extension is mounted a second
stub-axle carrying a roller D³, on the opposite side from D. The pivoted part
of the arm is similarly provided with an upward extension d, with a wheel D.
and with a roller D. Thus the wheels 1 and 16 are located and travel in the
same vertical plane. The roller D³ and the roller 17 each travels in a vertical
piane of its own.
Each succeeding step is severally provided on each side with a wrist (", sup-
ported in a yoke E, similar to the yoke D hereinabove described, and carrying
the wheels and rollers E1, E2, etc, corresponding to the wheels aul
rollers D and D³ etc. The arrangement of the wheels is such that

page_text: very
cach front wheel, E, travels, when the steps are moving horizontally, in the
space between the rear wheel of the preceding truck, and the central part of the
voke thereof: each rear wheel travels between the front wheel of
the following truck and the central
part of
the yoke thereof. By
each step or truck 15
this overlapping construction
given al
long bearing upon the tracks, the supporting wheels being some distance in
fient of and behind the edges of the step proper. This long bearing obviates
any tendency to rock, on the part of the steps, either when moving horizontally,
cr upon an incline as later described, and conduces materially to the smooth
running and the individual stability of the steps, particularly when the passengers
wolk up or down the moving steps. The pivoted construction of the arms D
and enables the yokes, and so the mechanism as a whole, to adapt itself
regularly and automatically to the changes in curve, where the trucks are con-
structed to run on curved tracks.
Along such portions of their course as the steps run horizontally, it is obviously
necessary to provide but a single track F. At that point where the steps com-
mence their ascent, the horizontal track F is continued as the lower of two
inclined tracks. The track F may preferably be formed of an angle iron as
shown, comprising the horizontal flange F which forms the track proper, and
the vertical flange 13, which serves as a guard-rail. Above the inclined track F
is provided a second inclined track 1 similarly consisting of an angle iron
comprising a lower horizontal flange 1, and a vertical flange F. During the
ascent of the successive steps, the front wheels of each travel on the tracks F,
the rear wheels on the tracks F; the tracks being SO disposed relatively to eacli
ether, and the wheels so spaced apart, that the steps remain severally horizontal
during such ascent.
In order to guide each of the rear wheels on to the upper track, I provide the
shunt or switch-track, G, which is placed in the vertical plane of travel of the
rear rollers ; and in such position that the said rear roller D will enter upon
the said switch-track at the same moment that the front wheel carried by the
same yoke enters upon the lower inclined track F. At that point where the rear
wheel, by the onward movement of the track, enters upon the upper inclined
track the switch-track is discontinued.
These tracks are all preferably mounted within a casing II, as shown in
Fig. 10 the said casing consisting of the outer wall H; the top H: the inner
depending side I' and the bottom II. The tracks are mounted within the said
casing upon suitable brackets, or in any other convenient way. It will be
observed that Fig. 10 is taken upon the opposite side of the series of trucks from
Figs. 1 and 2. The brackets may be made adjustable in the casing: and the
tracks thus adjustable on the brackets, as shown in Fig. 10.
Similar tracks are provided for the descent of the steps or trucks; and at the
beginning and end of each ascent and descent there will be provided a shunt or
switch-track similar to . By this location of the rollers and I, I avoid
the necessity of upthrust bearings, and other devices adapted to prevent the steps
from tipping, which are requisite when the said rollers are mounted opposite the
centers of their respective steps or thereabouts, as previously has been done.
Inasmuch as such upthrust bearings etc. are only partially efficacious in prevent-
ing the tendency to tip on the part of the steps in changing the direction of their
motion, this location of the rollers is the only construction which insures smooth
running of the steps at such points.
From the center of the bottom of each step, a post I, extends downwardly.
terminating in a yoke J, comprising the two curved branches or arms and J³.
Upon each of the said arms is formed a short stub-axle, K, upon which is mounted
obliquely a wheel or roller, K, adapted to travel in the guide-track, K², disposed
below and outside of the said roller. Above the said roller K, preferably only
at and near that point where the steps commence their ascent, I place an upthrust
track or bearing. K3; to check any tendency on the part of the steps to lift at

page_text: such point, owing to the resultant between the upward pull on the ascending
steps, and the resistance of the horizontally moving steps. This construction
checks such an upthrust tendency more directly, more nearly at the point of
application of that force, than where such upthrust tracks are arranged over the
supporting wheels or rollers outside of the steps: and avoids stress in the steps
arising from such other construction.
Upon pivots, L, mounted in the depending arms, J¹ and J², of the yoke, J, are
loosely mounted the adjoining ends of the sprocket chain bars M. Each of the
sprocket chain bars carries a double set of teeth M. -M², which are adapted to
mesh with suitable sprocket wheels that are located at appropriate points and
supply motive power to the series of trucks or steps. The adjoining ends of the
chain bars are rabbeted as at m²: the rabbeted end m carrying a tooth M², corre-
sponding to the teeth M'; the end me carrying a tooth M, corresponding to the
teeth M; the pivot L passing through both of said teeth M and M. A certain
amount of play is left between the adjacent surfaces of the ends m and m³, to
permit the chain bars to adapt themselves to the changes in curve, where the
steps move upon curved tracks.
The advantage of this construction over that where two sets of sprocket chain
bars are employed, one attached to each side of the steps, is most marked in
case the steps are to run upon curved tracks; since such tracks must frequently
be made with changes in the radii of curvature: which, in case of an outer and
an inner set of chain bars, will require an adjustment in the relative length of
such chain bars. The present construction, involving but one set of chain bars,
centrally attached to the steps, accommodates itself to slight changes in curvo
automatically and readily. The guide tracks, K, through the rollers K', receive
any side thrust which may arise when the steps are moving along curved tracks.
Both of these features, the centrally disposed single chain bar system, and the
guides and rollers, are applicable and advantageous in cases where the steps
move in the same vertical plane.
al
In another application filed simultaneously herewith, I have shown and described
an endless wainscoting adapted to move at each side of the series of steps, along
certain parts of their course, preferably the inclined portions thereof; the said
wainscoting being timed to move at the same rate and in the same direction with
the said steps; but otherwise independent thereof. The construction herein-
after described constitutes certain improvements upon the previous construction
referred to. Along a certain portion of the travel of the steps, upon one or both
sides thereof. I place a hood Ñ, substantially of the form shown, supported from
below by the posts N¹ which may preferably rest upon the track
casing . Upon each side of the inside of the hood N is formed
track N adapted to receive a roller N³. Each of the said rollers supports a
stanchion 0, comprising a base portion, an upper hollow portion 02, and au
offset or bracket, which is provided with a stub-axle for the roller N³. Near
the lower end of each stanchion is secured a bracket 0' carrying a roller 0%
adapted to travel in the guide N., carried on each side of the posts N'. The offsets
or brackets 0 carry a sprocket chain P, which meshes with a sprocket wheel P
keyed upon a vertical shaft 12, mounted within the hood and balustrading, and
preferably extending down within the track casing II, where it is supplied with
power requisite to revolve the said shaft. Toward the lower end of the shaft P².
I may mount a sprocket wheel P. carrying one or more teeth P. adapted t..
engage with the brackets 01 at the lower end of the stanchions, and thus counter-
act any tendency of the lower ends of the said stanchions to lag.
The stanchions are disposed at any convenient distance apart, and may be
secured in such relative position in any one of several ways. The following is one
method which I find preferable. The lower ends of the adjacent stanchions are
connected together by thin elastic bands of metal, Q. secured thereto by pivots, Q
To the hands Q are secured blocks, Q, of wood or other convenient material, y
centrally disposed pins or bolts. 7. passing through the said band, and through

page_text: a spring washer. These blocks are so disposed relatively to each other that
where the endless balustrading is moving in a straight line, the ends of the blocks
are approximately in contact with each other; when the balustrading, at the end
of its course, passes around the curve requisite to start it on its return course,
the blocks will take the position shown in the right-hand side of Fig. 11, as
tangents to the curve formed by the supporting band. Higher up on the stan-
chions I may provide a second set of similar bands, R, supporting similar
blocks Rs.
Within the hollow upper portion of each stanchion I mount an upwardly and
outwardly projecting arm, S, pivoted to move in a vertical plane as at s, and
carrying at its lower end, near its pivotal point, a segmental gear extension St
The said arms carry a hand-rail, which I have shown to be formed of a cord or
rope, S3, secured in the ends of the said arms, S, and itself carrying a series of
blocks, S, firmly attached thereto; adapted to be grasped by the hand of the
passenger. Inasmuch as both the balustrading and hand-rail, however, have
to pass about a curve at the end of their course, it is desirable not to depend
upon the arms, S, being tilted up by the tension in the rail as the curve is
approached; but to provide some positive means by which the said arms are
automatically tilted, in such manner that the outer ends of the arms move through
the same curve as do the inner ends, and all stretch in the rail is avoided. This
I provide for by mounting in the tubular upper portion of each stanchion a
shaft T, the lower end of which carries a worm-gear, T, adapted to engage with
the gear segment S¹. On the upper end of the shaft T is mounted a pinion T,
which meshes with the rack T The rack T is preferably mounted upon a
depending bracket, T, supported from the casing, and is placed at a point just
before that where the balustrading commences to curve in order to take its
return course. By this mechanism the arm S is tilted up from the operative
position shown on the left-hand side of Fig. 10, to the position shown on the
right-hand side thereof. I find it preferable to allow the arm S to remain tilted
up in the latter position during the time of its return travel to that point where
the balustrading again curves around to its starting point, whence it moves along
with and in proximity to the steps as above stated. The second rack will at this
point, therefore, be placed upon the other side of the pinion, T2, in order to tip
the arm S down into operative position.
Fig. 8 represents a form of passageway for entering upon the steps when the
same are moving horizontally. At a suitable point I construct a platform exten-
sion, V, supported from the platform proper on both sides of the moving steps,
preferably of the form shown in the said fig., and provide the said extension with
the fixed railings V and V2, which are so curved that while the passenger enters
upon the platform extension in a direction approximately transverse to that of
the movement of the steps, he leaves the said extension, and steps on the moving
steps, in the direction of their motion. I may find it desirable in case the steps
are wide enough to accommodate two or more passengers each, side by side, to
provide one or more railings such as V, dividing the said single passageway
into two or more passageways of the same form. The arrows in the said figure
represent the direction in which the passengers enter the said passageway, and
the direction in which the steps move. The platform V will preferably be so
placed that the steps will just clear it in passing underneath.
By this construction it will be obvious that if the steps be run at a rate of
speed approximating the ordinary rate of walking of the passenger, such passenger
stepping from the platform Von to the steps A will experience no jerk whatso
ever from the movement of the step: the step will merely continue his own motion
at the same rate and in the same direction.
Although I have shown and described but one specific form of construction
for the several devices which form the subject matter of my invention: I do not
limit my invention to the said specific form, since many obvious modifications
therein may be made.

page_text: Having now particularly described and ascertained the nature of this
invention, and in what manner the same is to be performed, I declare that what
1 claim is
1. In an elevating apparatus, a series of traveling steps, the upper surfaces
of which are adapted to remain severally horizontal whether the steps be moving
horizontally or on an incline, the said steps being provided with risers having
a convex surface and so mounted thereon as to keep the adjoining steps in contact
throughout their length in passing from a horizontal to an inclined surface,
and rice versa, and in passing from one vertical plane of movement to another,
substantially as described.
2. In an elevating apparatus, a series of traveling steps, the upper surfaces of
which are adapted to remain severally horizontal whether the steps be moving
horizontally or on an incline; the said steps being provided with risers having
a convex surface and centrally pivoted thereon so as to keep the adjoining steps
in contact throughout their length in passing from a horizontal to an inclined
surface and rice versa, and in passing from one vertical plane of movement to
another, substantially as described.
3. In an elevating apparatus of the general type described, the combination of
a series of interconnected steps having risers convex as at B3, and provided with
elastic nosings ; and of tracks for said steps, said tracks being partly horizontal
and partly inclined.
4. In an elevating apparatus of the general type described, the steps A, com-
prising a tread A', and one or more risers B' pivoted to rotate in a horizontal
plane.
5. In an elevating apparatus of the general type described, the steps A each
comprising a tread A', and one or more risers, 131, each of the said risers consisting
of a horizontal part 12, pivoted beneath the tread A', and a depending part B³.
6. In an elevating apparatus of the general type described, the steps A, each
comprising the tread, the brackets 12, and one or more risers B', consisting of
a horizontal portion B2, and a convex depending portion B³, the horizontal por-
tion 12 being pivoted between the said tread A and the said brackets A².
7. In an elevating apparatus of the general type described, the steps A, pro-
vided on either side with the depending bracket C, the upright arm C, the
wrist (connecting with the wheel supports of the steps and the track casing H.
the inner side of which, H, projects down within the space between the arm C
and the body of the step.
8. In an elevating apparatus of the general type described, the steps A, provided
with wheels, the front wheels of one step being in advance of the rear wheels of
the adjacent preceding step, substantially as shown and described.
9. In an elevating apparatus of the general type described, the platform trucks
comprising the yokes D, each yoke consisting of the horizontal body portion pro-
vided with the wheels 10 and 16 journaled in its respective ends and one wheel
in advance of the other, and with the rollers D and D also journaled in said
ends of the yoke, and in different planes from the wheels D and D, substantially
as and for the purposes described.
10. In an elevating apparatus of the general type described, the platform trucks
comprising the yokes D, each consisting of the horizontal arms D1 and D2 pro-
jecting forwardly and rearwardly from the center of the yoke and in different
parallel planes; the wheels D and D³ carried by the arms D' and D, and jour-
naled on the inner side of said arms so as to be in the same plane and the
rollers D and D7 also carried by the arms D' and D2, and journaled on the outer
sides thereof so as to be in different planes from the rollers D and D, and in
different planes from each other, substantially as and for the purpose described.
11. In an elevating apparatus of the general type described, the platform
trucks comprising the yokes 1), each consisting of the horizontal arms D1 and D2
projecting forwardly and rearwardly from the center of the yoke and in different

page_text: parallel planes, and having the pivoted ends and ; the wheels D and D
carried by the pivoted ends d' and d², and journaled on the inner side of said ends
so as to be in the same plane; and the rollers D and D also carried by the ends!
and 2, and journaled on the outer sides thereof so as to be in different planes
from the rollers D' and D6, and in different planes from each other, substantially
as and for the purpose described.
1. In an elevating apparatus of the general type described, the platform trucks
comprising the yokes D, each yoke consisting of the horizontal body portion pro-
vided with the wheels D and D journaled in its respective ends and one wheel
in advance of the other, and with the rollers D and D7 also journaled in said
ends of the yoke, and in different planes from the wheels D and D: the horizontal
tracks F, and the inclined tracks and F, with which the wheels D and De
co-operate and the switch track G in a different plane from the tracks F, F,
and F, to co-operate with the roller D, substantially as and for the purpose
described.
1. In an elevating apparatus of the general type described, the steps A; the
yohes D; the wheels and Dete, arranged so that the front wheels are in
advance of the rear wheels of the adjacent preceding step; the rollers D and D';
the horizontal tracks F: the inclined tracks F1 and F; and the switch track G,
arranged and operating substantially as shown and described.
14. In an elevating apparatus of the general type described, a series of inter-
connected steps, in combination with adjustable inclined tracks, substantially as
shown and described.
15. In an elevating apparatus of the general type described, a series of inter-
connected steps, in combination with inclined tracks horizontally and vertically
adjustable in their mountings, substantially as shown and described.
16. In an elevating apparatus of the general type described, the steps A: the
centrally located depending posts : supporting wheels; tracks; and mechanism
connected with the posts I adapted to transmit movement to the steps.
17. In an elevating apparatais of the general type described, the steps A; the
centrally disposed depending posts I: the yoke the pivot : and the chain
bars M. the adjoining ends of which are mounted on the pivot L.
18. In an elevating apparatus of the general type described, the steps A: the
depending post I: the yoke J; the pivot L: and the chain bars M. provided with
teeth M and M², and rabbeted at their ends as at m and m', the said ends carry-
ing the teeth M³ and M', respectively, and being mounted on the pivot L.
19 In an elevating apparatus of the general type described, the steps A: the
depending post : the yoke J: mechanism attached thereto adapted to transmit
moment to the steps: one or more guide rollers K mounted on the said yoke:
and the tracks K2, on which said rollers run.
20. In an elevating apparatus of the general type described, the steps A: the
depending post I: the yoke J: mechanism attached to the said yoke adapted to
move the steps: one or more guide rollers K mounted on the said voke: the
guide tracks K² on which said rollers run; and the upthrust tracks K. against
which said rollers bear.
21 In an elevating apparatus of the general type described, a balustrading
comprising a series of stanchions 0; the elastic strips Q connecting said stan-
chions and means for supporting and moving the said balustrading, substantially
as shown and described.
22 In an elevating apparatus of the general type described, a balustrading
comprising the stanchions 0: the elastic metal strips Q connecting said stan-
chions: the blocks Q carried by the said strips: and means for supporting and
movine the stanchions, substantially as described.
23. In an elevating apparatus of the general type described, a Lalustrading
comprising the stanchions : the clastic strips Q connecting said stanchions; the
blocks Q2: the pivots : the spring washers q' and means for supporting aud
moving the said balustrading, substantially as described.

page_text: 24. In an elevating apparatus of the general type described, a balustrading
comprising the stanchions O; the arms S pivoted to the said stanchions and
carrying a hand-rail; positive acting mechanism adapted to tip the arms S into
a vertical position where the balustrading makes its turns; and means for sup-
porting and moving the said stanchions.
25. In an elevating apparatus of the general type described, the stanchions 0;
the pivoted arm S; the gear S'; the shaft T; the worm T¹; and means adapted
to rotate the said shaft, and tip the arm S into a vertical position, located at the
point where the balustrading makes its turn, substantially as described.
26. In an elevating apparatus of the general type described, the stanchions O;
the supporting rollers N³; the sprocket chain P carried by the stanchions; the
shaft P carrying a sprocket wheel P1, adapted to engage with the sprocket chain P
to supply movement thereto, and carrying a sprocket wheel P3 adapted to engage
with the brackets 0 carried by the stanchions; the guide rolls 05 carried by
the said brackets 0; guides in which the said rolls are adapted to travel; and
means for revolving said shaft P, substantially as described.
Dated the 1511
1
банцау 1007.
HERBERT HADDAN & Co.,
Agents to Applicant,
18, Buckingham Street, Strand, W.C., London.
HERBERT HADDAN & Co.,
Agents to Applicant,
18, Buckingham Street, Strand, W.C., London.