close

Вход

Забыли?

вход по аккаунту

?

Патент USA US2127164

код для вставки
Aug. 16, 1938.
P. DENNERLEIN
2,127,164
ESCALATOR
Filed Sept. 17, 1934
2’ Sheets-Sheet 1
Awumn”anyd
amII
A.
Aug. 16, 1938.
P. DENNERLEIN
2,127,164
ESCALATOR
Filed Sept. 17, 1934
2 Sheets-Sheet 2
.2
2.3\_
[
E:_:_
2/
/
4:
m
6
J
2/
I‘:
7
_
'
.9
-
/
/
,0
'
I‘
:/4
'
2/
_
4?-
.
'
'
.6
4.
2/
Patented Aug. 16, 1938
2,127,164
UNITED STATES PATENT OFFICE
2,127,184
ESOALATOB
Pill With, Btnttgart-Unterturhheim, Ger
many, aalignor to B. Stahl A. 0., Stuttgart,
Germany
am September 11, 1934 Serial No. 144,350
In Germany September 20, 193:
9 Claims. (Cl. 198-46)
This invention relatesto improvements in esca
lators.
'
.
An object of the present invention resides ‘in
the provision of an escalator in which the in
dividual step cars can be lightly built and made
of light material.
An object of this invention is the provision
of an escalator in which the chain wheels, at
the points of reversal, are small and have a small
10
diameter.
_
Another object of this invention is the provi
sion of an escalator in which the step cars run
on four rollers which are underneath the plat
form of the step when in normal position and
15 in which no special guides besides the chain
wheels need be provided at the points of reversal
for guiding the rollers or step cars.
_ A further object of the present invention is the
provision of an escalator in_which a lifting up
20 of the individual step cars is de?nitely prevented.
Another object of the present invention resides
in the provision of an escalator in which no spe
cial provisions for adjusting the length of the
operating chains need be provided.
A further object of this invention is to pro
vide an escalator in which means are provided
on the circulating parts which assure a proper
guiding of the step cars at the points of reversal
and which make the apparatus independent of
30 slight variations of the length of the operating
chains.
An object of the present invention resides in the
provision of an escalator in which the operating
chains can freely move underneath the step
35
platform.
-
Another object of this invention is the provi
sion of an escalator in which ample space is avail
able for placing the power plant inside the circu
lating chain.
40
A further object of the present invention is to
provide an escalator in which the return path
of the step cars can have any con?guration and,
can be designed to suit local conditions.
Another object of the present invention is to
provide an escalator in which the platforms of
the returning step cars are all in one plane and
can be cleaned with brushes.
’
A further‘object of this invention resides in
the provision of an escalator in which stresses
50 caused by the tension of the operation chain at
points of change of direction of the chain and
acting substantially perpendicular to the direc
tion of the chain are de?nitely withheld from the
step car structures.
Further and other chiects of the present in.
vention will be hereinafter set forth in the ac
companying speci?cation and claims and shown
in the drawings which, by way of illustration,
show what I now consider to be a preferred em
bodiment of my invention.
In the drawings:
5
.
Fig. 1 is a diagrammatic side view of an esca
lator according to my invention.
Fig. 2 is a diagrammatic cross sectional view
of an individual step car taken along line 2—2 1(
of Fig. 3.
Fig. 3 is a diagrammatic, longitudinal rear view
of, a step according to my invention looking in
the direction of arrow 3 in Fig. 2.
Fig. 4 is a diagrammatic front view of a step 15
car according to my invention showing chains,
counterrollers, and the support of the latter.
Referring more particularly to Fig. 1 of the
drawings: 4 represents the carrying chain which
is connected to the front axles I9 01' the indi- 20
vidual step cars I. The front support rollers 2|
of the step car, which are connected to the axles
l9, run on the guide rails 9, and the rear support
rollers I on the guide rail It. On the ascent of
the escalator, guide rails 9 are located higher 25
than guide rails it. The rails are in one plane
and may be united into one rail on the return
and the horizontal parts of the escalator. At the
points of reversal, chain wheels l3 and II are
provided. The upper wheel I3 is motor driven, 30
for example, by means of a worm gear 20, an
intermediary chain It, a gear I1, and a motor
I‘. It must be noted that, with my improved
escalator, there is sumicent room to locate the
power plant inside the guide rails. According 35
to my invention, the guide rails are interrupted
at the points of reversal. The lower or descend
ing rails may have straight ends i l and i 2, where
as the upper or ascending rails have curved ends
it and 22.
'
40
An individual step car is shown in Figs. 2 and
3. It comprises two substantially four-cornered‘
side frames 22 and 24 and the platform 2. Front
rollers 2i are mounted on an axle I! to which
the chains 4 and 4" are movably connected. The 45
chain links are provided with upright slots 2'
for movably accommodating the axle It, as is ap
parent from Fig. 2. The rear rollers I are in
dividually mounted to the side frames 23 and 24,
and there is no part going across which might 50
hinder the free movement of the chains 4. It
must ‘be noted that the rollers, particularly the
front rollers to the axle of which the driving
chain is connected, are located underneath the I
platform which renders the structure compact ls
2
2,127,164
and stable.
All rollers are in a plane parallel to
the plane of the step platform. Small escalators
may be provided with only one chain, whereas
large and/or wide escalators may have a plural
ity of chains without necessitating a departure
from the basic ideas of my step structure. A
lifting-up or tilting of the. step cars due to the
tension of the chains can be prevented by pro
viding U-shaped guide rails for the front rollers
2|, as shown in Fig. 4, in the lower, horizontal
parts of the path of the step cars. The individ
_ ual step cars can be made of light material, since
weight is not required for holding the cars down
‘against a lifting eifect of the chains, as is pos
15 sible with other escalator designs.
In order to hold the step cars to the chain and
in correct position at the points of reversal, trans
verse members ‘I may be mounted to the chains,
the ends of which cooperate with noses 6 pro
20 jecting from the side frames. In gradually
turning into upright position at the lower point
of reversal, the transverse members ‘I disengage
the noses 6; but, before this can happen, the rear
rollers I engage the curvature 22 of the guide
25 rails l0 which is provided for this purpose. Sim
ilar conditions prevail at the upper point of re-'
versal where, upon the movement of the escalator
in‘ a descending direction, the curvature l8
catches the rear rollers at the moment the noses
30' 6 disengage the transverse members ‘I. It is
obvious that, with the particular design of my
step car, the chain wheels can be of small di
ameter at the points of reversal. My design fur
ther permits toarrange the guide rails, particu
larly the return rails, to suit any available space
conditions and to provide plenty of room for 10
cating the driving motor and gears within the
guide rails in contradistinction to other escalator
constructions in which the motor is outside of the
40 rails andrequires additional space.
Because of the provision of the members 1 co
operating with the noses 6, no adjusting means
are required for exactly adjusting the length of
the operating chain. A certain amount of
lengthening of the chains, which is unavoidable
in practical service, does not interfere with the
reliable operation of my improved escalator.
It must be further noted that, with an escalator
according to the present invention, the platforms
50 of the returning, 1. e., hanging step cars are in
one plane, and brushes 2‘! (Fig. 1) may be pro
vided for cleaning the platforms. This is in con
tradistinction to other escalator designs in which
the returning steps form a saw-like surface and
55 can only be cleaned by expensive blower or vac
uum plants.
At the point where the ascending part 0! the
escalator changes over to the horizontal part,
great pressure may be éxerted by the chains on
60 the step car axles, rollers, rails etc. This is par
ticularly true and undesirable in escalators of
large dimensions and for great elevations.
At _
accomplished by providing support pieces I! hav
ing ?aps 32 through which the support bolts 35__
extend. The support pieces 3| can be screwed
to the steel structure 30 at lower or higher ele
vation by tightening up of nuts 36 at a suitable
position. In Fig. 4, a cross section of the guide
rails 8 is shown as are provided on the lower hori
zontal parts of the path of the step cars in or
der to prevent lifting up of the cars by the ten
sion of the chains.
In order to assure noiseless operation, I pro
pose making the counterpressure rollers not of
steel but of some arti?cial pressed material, for
‘example, that known as Bakelite, ?bre or the
like.
While I believe the above described embodi—
ments of my invention to be preferred embodi
ments, I wish‘ it to be understood that I do not
desire to be limited to the exact details of de
sign and construction shown and described, for
obvious modi?cations will occur to a person
skilled in the art.
What is claimed is:
l. Escalator comprising an endless chain trav
elling around a loop having a plurality of points an
where-the direction of travel is changed, steps
movably‘ attached to said chain and having
lateral supporting. ends situated outside of said
chain, transverse members connected with said
chain and situated inside of said supporting a.
ends, abutments connected with said steps and
adapted to engage said transverse members when
travelling around the points of change of direc
tion of sald'chain and to thereby prevent that
part of the steps to which said abutments are
connected from swinging outside of said loop
when travelling around the points 'of change
of travel direction.
2. Escalator comprising an endless chain, a
plurality of individual step cars, each car hav- '
ing two pairs of support rollers, those two of
said support rollers which are in the rear when
the car travels upward having an axle in com
mon extending across the car, said axle slid
ingly, movably extending through slots provided A
in said chain.
3. Escalator comprising anv endless carrier
travelling around a loop having a plurality of
points where the travel direction is changed,
steps movably attached to said carrier and hav- :
ing lateral supporting ends between which ends
said carrier is situated, means connected to said,
carrier and situated inside or said supporting
ends, means attached to said steps and being in
dependent from and adapted to abuttingly co
operate with said ?rst mentioned means and'to
prevent that part of said steps to which said
second mentioned means are attached from
swinging outside ‘of said loop when travelling
around the points of change of travel direc- ‘
tion.
‘
.
4. Escalator comprising an endless carrier
these points, I provide a plurality of counter
pressure rollers 28 which support the chain or
travelling around a loop having a plurality of
chains and take up the undesirable pressure.
The slots 2‘, which I mentioned before, in chains
steps movably attached to said carrier and hav- ‘
' l prevent pressure vertical to the line'of the
chain from being exerted on the axles IS in be
points where the travel direction is changed.
ing lateral supporting ends between which ends
said carrier is situated, means connected to said
carrier and situated inside of said supporting
tween the points where the chains are supported v ends, means attached to said steps and being
70 by the counterpressure rollers.
The rollers 28
may be built as discs with a flat circumference,
as shown in ,Figs. 1 and 4, and are supported by
an axle 29 which is supported by the main steel
structure 30. If necessary, the elevation of the
75 axles 29 may be made adjustable. This may be
independent from and adapted to cooperate with ‘
said ?rst mentioned means and to prevent that
part of said steps to,which said second men
tioned means are attached from swinging out
side of said loop when travelling around the
points of change of travel direction.
2,127,164
5. Escalator comprising an endless chain trav
elling around a plurality of chain wheels, steps
movably attached to said chain and having lat
eral supporting ends between which ends said
chain is situated, means connected to and lat
erally protruding from said chain and situated
inside of said supporting ends, means attached
to said steps and being independent from and
adapted to cooperate with said ?rst mentioned
means when travelling around said chain wheels
and to prevent that part of said steps to which
said second mentioned means are attached from
swinging outside of the pitch circle diameter of
said chain wheels.
6. Escalator comprising an endless carrier,
a plurality of individual step cars of substan
tially rectangular cross sectional con?guration,
said carrier being movably connected to said
cars substantially at that one of the lower corners
of the rectangle which is in the rear when the
3
cars to which said means are connected from
being removed from said carrier at points where
the travel direction of said carrier and cars
is changed. '
8. Escalator comprising an endless carrier, a 5
plurality of individual step cars having a plat
form and being provided with a plurality of
pairs of rollers located in a plane parallel to said
platform, one pair of said rollers being connected
with said carrier, means connected with said
step cars and adjacent to another pair of said
rollers, and members connected with said car
rier and being adapted to engage said means
and to prevent that part of said step cars to
which said means are connected from being re 15
moved from said carrier at points where the
travel direction of said carrier and cars is
changed.
9. An escalator having an endless chain com
car travels upwards.
prising links which have elongated openings, the
7. Escalator comprising an endless carrier, a
plurality of individual step cars having a plat
form and being provided with a plurality of pairs
of rollers located in a plane parallel to said
platform, one pair of said rollersbeing con
nected with said carrier, means connected with
said step cars,‘ and members connected with
longitudinal axis of which openings extends in
said carrier and being adapted to engage said
means and to prevent that part of said step
20
a direction which is perpendicular to the travel '
direction of said chain, a plurality of step cars
having members mounted thereon and extending
through the openings insald links, whereby said
step cars can move relatively tosaid chain in a
direction which is perpendicular to the center
line- of said .chain.
,
‘
_
'
PAUL DENNERLEIN.
p.
Документ
Категория
Без категории
Просмотров
0
Размер файла
444 Кб
Теги
1/--страниц
Пожаловаться на содержимое документа