Improvements in Elevators.
Year: 1895

page_text: Date of Application, 26 h Feb., 1895-Accepted, 30th Mar., 1895
[Communicated from abroad by JOHN C. KAILEY, of Canton, in the County of
Stark and State of Ohio, United States of America, Mechanic.]
Improvements in Elevators.
I, HENRY HARRIS LAKE, of the Firm of Haseltine, Lake & Co., Patent
Agents, 45 Southampton Buildings, in the County of Middlesex, do hereby
declare the nature of this invention, and in what manner the same is to be
performed, to be particularly described and ascertained, in and by the following
statement:--
The present invention relates to elevators, and it consists in the different parts
and combination of parts hereinafter described.
In the accompanying drawings,
Figure 1 is a side elevation of the gearing and its different parts.
Figure 2, is a longitudinal section of the worm disks and their shafts and different
parts belonging thereto.
Figure 3, is a view showing a portion of one of the toothed bars, and one of the
guides properly located with reference to said toothed bar.
Figure 4, is a similar view, showing the guide wheel properly attached.
Figure 5 is an edge view of the elevator frame, showing the location of one
set of the worm disks and the different parts to communicate rotary motion to the
worm disk.
Figure 6, is a view showing the shifting lever, its segment and different parts
belonging thereto.
Figure 7, is a detached view of one of the worm disks, omitting the position of
its backing wheel.
Like numbers represent corresponding parts in all of the figures of the drawings.
1, represents the toothed bars, which are located upon the inner sides of the
elevator shaft, and are of a length to correspond with the length of travel designed
to be given to the elevator proper. If the bars are to be of considerable length,
I prefer to form said bars in sections, and place the sections together so as to form
continuous toothed bars from the top to the bottom of the elevator shaft, in the
event the car is to travel that distance. The toothed bars 1 are to be so arranged
that they will be parallel to each other throughout their entire length.
The elevator frame which is to be located below the car may consist of the
bars 2, 3, and 5, which bars are preferably located and arranged substantially as
shown in Figures 1 and 2, which arrangement is the best for arranging the different
parts to be attached to said frame. The elevator car is to be attached to the bar 2
in any convenient manner, and may be of any desired kind or style, reference being
had to the purpose for which the car is to be used. To the bars 4 are journalled
the shafts 6, which shafts are located substantially as shown in Figures 1, 2, and 6,
and as shown, said shafts are provided with the toothed wheels 7, said wheels being
securely attached in any convenient and well known manner to the shafts 6.
The shafts 8 are properly journalled by means of the boxes 9, which boxes are
attached in any convenient and well known manner to the bars 5, or their equiva-
lents. The shafts 8 are provided at their inner ends with the toothed wheels 10,
which toothed wheels are so located and arranged that their teeth will interlace or
mesh with the teeth of the toothed wheels 7.

page_text: The shafts 6 and 8 are held in proper position with reference to each other by
means of the socket connections 11 and the pins 12, said parts being located and
arranged substantially as shown in Figure 2. To the outer ends of the shafts 8,
are securely attached in any convenient and well known manner, the worm disks 13,
which worm disks are provided upon their faces with the worms or screw-threads 14,
which screw-threads may be of any desired pitch reference being had to the use
to which the elevator proper is to be put.
In the drawings the worms or screw-threads 14 are shown single, but it will be
understood that they may be doubled if so desired, inasmuch as the same arrange-
ment of the different parts can be employed in either event.
For the purpose of causing the screw-threads 14 to engage the teeth of the
toothed bars 1, only upon one side of their horizontal centres, said disks are set at
an angle as illustrated in Figures 1 and 2, thereby allowing the reverse part of the
disks to be disengaged from the teeth upon the bars 1.
For the purpose of providing a means for inclining the worm disks 13, the shafts 8
are also inclined to correspond with the inclination of the worin disks, and in order to
connect the inclined shafts 8 with the horizontal shafts 6, the toothed wheels 7 and 10
are provided, and the teeth so arranged that said wheels can stand or set at an
angle to each other, and at the same time a sufficient number of the teeth interlace
to communicate rotary motion to the inclined shafts 8, and their worm disks 13.
To the shafts 6 are securely attached the cog wheels 15 and 16, which wheels are
so located and arranged that they will mesh with each other, and thereby com-
municate rotary motion to all of the worm disks 13, and for the purpose of causing
the worm disks to rotate in unison the cog wheels 15 and 16 are of the same size
and provided with an equal number of teeth. It will be understood that the cog
wheels 15 and 16 will rotate in opposite directions, thereby causing the respective
worm disks to rotate in opposite directions, and for the purpose of causing all of
the screw-threads 14 to act alike, each set of the worm disks must be provided with
right and left hand screw-threads; that is to say if the upper disks 13 are provided
with right hand screw-threads the lower disks must be provided with left hand
screw-threads or vice versa. To the bar 2 or its equivalent is attached the notched
segment 17, which notched segment is provided with the notches 18, 19 and 20,
which notches are for the purpose hereinafter described.
For the purpose of providing a means for pivotally attaching the lever 21, aud
at the same time connecting the outer end of the segment 17, the arm 22 is provided,
which arm is securely attached to the bar 2, or its equivalent, said arin having
journalled thereto the shaft 23, to which shaft is securely attached the arm 24, and
to the outer end of said arm is attached the connecting rod 25, which connecting
rod is extended downward and connected to the collar 26, said collar being loosely
mounted upon the shaft 27, which shaft is held in proper position by means of the
arms 28, which arms 28, are pivotally connected to the cross-bar 29, said cross-bar
being securely attached in any convenient and well known manner to the bars 5 or
their equivalents.
To the shaft. 27 is securely attached the cog wheel 30, which cog wheel is located
in true alignment with the cog wheels 15 and 16, and is so located for the purpose
hereinafter described.
To the outer end of the shaft 27 is attached the pulley 31, which pulley is for
the purpose of communicating rotary motion to the shaft 27 by means of the
cable 32 or its equivalent. In use the power shaft 33 is preferably located at the
bottom of the elevator shaft proper, and is properly connected by belt or otherwise
to a motor of any desired kind or style. Upon the shaft 33 is located and securely
fixed the wheel 34, and directly over the wheel 34 is located the pulley 35, which
pulley is located at the top or upper portion of the elevator shaft.
The cable 32 is extended from the wheel 34 upward and over the wheel 35, and
thence downward and under the wheel 31, thence upward and over the idler 36, and
thence downward under the wheel 34. The object and purpose of locating the
cable 32, as illustrated in Figure 5 is to provide a means for covering a sufficient

page_text: amount of the periphery of the wheel 31 to prevent the cable from slipping upon
the periphery of the wheel 31.
When it is desired to stop the car at any desired point in the elevator shaft,
the sliding-bar 37 is set in the notch 19, which disengages the cog wheel 30 from
the wheels 15 and 16, at which time the motor is free to run without communi-
eating rotary motion to any of the parts, except the wheels 31, the cog wheel 30
and its different pulleys over and around which the cable passes.
When it is desired to impart motion to the elevator car or carriage, the sliding-
bar 37 is disengaged from the notch 19, after which the lever 21 is moved so as
to engage the sliding-bar 37 with one of the notches 18 or 20, reference being had
to the direction the carriage is to be moved, which movement engages the cog
wheel 30 with one of the wheels 15 and 16, thereby communicating rotary motion
to said wheels 15 and 16, and at the same time rotary motion is communicated to
the worm disks 13, which rotary motion of the disks 13 elevates or lowers the
carriage, reference being had to the direction of motion given to the disks. It
will be understood that by shifting the wheel 30 from one wheel to the other of
the wheels 15 and 16, the direction of motion of the disks will be changed.
It will be understood that reversing the position of the lever 21, will reverse
the motion of the worm disks 13, thereby reversing the motion of the elevator
carriage.
It will be understood that as the lever 21 is moved the shaft 27 will follow
the movements of said lever by means of the arm 24, and the connecting rod 25,
said shaft 27, describing the arc of a circle, the centre of which is the centre of the
cross-bar 29.
It will also be understood that the cog wheel 30 and the wheel 31 will follow
the movements of the shaft 27. For the purpose of regulating the tension of the
cable 32, the pulley 38 is provided, which pulley is journalled to the bottom or
lower end of the arm 39; the opposite end of said arin being provided with the
counter-weight 40.
The toothed bars are each provided with the grooves 41, which grooves are
located substantially as shown in Figures 3 and 4, and are for the purpose of
receiving the notched plates 42 and the travelling wheels 43.
The object and purpose of providing the grooves is to prevent an accidental
displacement of the worm disks 13, and at the same time causing the frame carrying
the gearing to communicate rotary motion to the worm disks to move up and down
in true alignment with the toothed bars 1. For the purpose of preventing the
worm disks 13 from springing so as to disengage their screw-threads from the teeth
of the bars 1, the backing wheels 44 are provided, which backing wheels are
located substantially as shown in Figures 1 and 2.
For the purpose of providing a means for properly lubricating the screw-
threads 14, the worm disks 13 are provided with the wood disks 45, which wood
disks may be provided with a screw-thread corresponding in size and pitch with
the screw-threads formed upon the worm disks 13, but this is not absolutely
necessary as the only object in providing the wood disks 45, is to provide a means
for allowing oil to percolate through said disks and find its way onto the screw-
threads 14.
The cable 32 is simply for the purpose of communicating rotary motion to the
worm disks 13, by means of the gearing described, and hence a belt may take the
place of the cable, inasmuch as the elevator car or carriage is not supported by
the cable, and if in the event the cable or belt should break from any cause the
elevator car or carriage will not drop or fall, said car being held by means of
the toothed bars 1, and the worm disks 13, thereby providing an elevator that will
be absolutely safe.
The inclined shafts 8 are formed in pairs or sets and one set located above the
other, thereby providing two sets of worm disks, located one above the other. In
use it will be understood that the frame carrying the gearing may be properly
enclosed for the purpose of preventing accidents.

page_text: Having now particularly described and ascertained the nature of the said
invention and in what manner the same is to be performed, as communicated to
me by my foreign correspondent, I declare that what I claim is: -
1. The combination of an elevator shaft provided with the toothed bars 1, b
frame provided with the shafts 6, the wheels 15 and 16 mounted upon the shafts 6,
the toothed wheels 7, the inclined shafts 8, the toothed wheels 10, mounted upon
the inclined shafts 8, the worm disks 13 secured to the shafts 8, the shaft 27, the
wheel 30 mounted upon the shaft 27, the pivoted armis 28, the cross-bar 29, and
means for swinging the shaft. 27, substantially as and for the purpose set forth.
2. The combination of an elevator shaft, provi·led with the toothed bars I,
provided with the grooves 41, a frame carrying worm disks, said worm disks
having right and left-hand screw-threads, the shafts 6, provided with the cog-
wheels 15 and 16, the cog-wheel 30 located between the wheels 15 and 16, and
mounted upon the swinging shaft 27, and means for swinging said shaft 27,
substantially as and for the purpose set forth.
3. The combination of an elevator shaft, provided with the toothed bars 1, a
frame carrying the shafts 6, 8 and 27, the toothed wheels 7 and 10, the worm
disks 13, located at an angle to the toothed bars 1, the cog wheels 15 and 16, the
swinging shaft 27, the cog wheel 30, mounted upon the shaft 27, and means for
swinging the shaft, substantially as set forth.
4. The combination of an elevator shaft, provided with the toothed bars 1, a
frame carrying the shafts 6, the inclined shafts 8 provided with the worm disks 13,
the wooden or porous disks 45 attached to the worm disks and means for rotating
the worm disks, substantially as and for the purpose set forth.
5. The combination of an elevator shaft, provided with the parallel toothed
bars 1, a frame provided with the inclined shafts 8, the worm disks 13 mounted
upon the inclined shafts 8, the shafts 6 located between the inclined shafts 8, the
socket connection 11, and the toothed wheels 7 and 10, substantially as and for the
purpose set forth.
6. The combination of an elevator shaft provided with the toothed bars 1,
the worm disks located at an angle to the toothed bars, and provided with the
screw-threads meshing with the toothed bars, the swinging shaft 27 provided with
the pulley 31, a belt or cable located at one side of the elevator shaft and extended
from the lower portion of the shaft to the upper portion thereof, the idler 36, the
arm 39 provided with the wheel 38, and the counter-weight 40, substantially as
and for the purpose specified.
7. The combination of an elevator shaft provided with toothed bars 1, a frame
provided with the shafts 8, formed in sets or pairs, the worm disks 13, secured to
said shafts 8, the shafts 6 located between the inner ends of the inclined shafts 8,
the cog wheels 15 and 16, mounted upon the shafts 6, the cog wheel 30, mounted
upon the swinging shaft 27, the toothed wheels 7 and 10, and the backing wheels 44,
substantially as and for the purpose specified.
Dated 26th day of February 1895
HASELTINE, LAKE & Co.,
45, Southampton Buildings, London, W.C., Agents for the Applicant.