Improvements in Elevators.
Year: 1896

page_text: Date claimed for Patent under Sect. 103 of Act,
being date of first Foreign Application (in 30th. Oct., 1895
United States of America),
cate of Application (in United Kingdom), 27th Mar., 1896
Complete Specification Left, 27th. Mar., 1896-Accepted, 6th June, 1596
ciate of Application (in United Kingdom), 27th Mar., 1896
Complete Specification Left, 27th. Mar., 1896-Accepted, 6th June, 1596
COMPLETE SPECIFICATION.
5
Improvements in Elevators.
We, JOHN SEISER MUCKLÉ of 1722 Pine Street, Mechanical Engineer and
WILLIAM HENRY BENNETT TEAMER of 3042 Susquehanna Avenue, Draughtsman
both in the City and County of Philadelphia State of Pennsylvania one of the
United States of America, 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 object of our invention is to prevent accidents on passenger elevators due to
the carelessness of the operator in starting the car while the door is open and
leaving the door open after the car has passed the floor. This object, we attain
by positively locking the car on the opening of the door and locking the door on
the movement of the mechanism to start the car.
Referring to the accompanying drawings,
Figure 1 is a sectional plan view showing an elevator-car in position in front of
one of the landings with the door closed, but unlocked.
Fig. 2 is a view from the elevator well, showing the door in a position similar
to Fig. 1.
Fig. 3 is a view on the line 3-3, looking in the direction of the arrow 1,
Figure 1.
Fig. 4 is a section on the line 4-4, looking in the direction of the arrow, 2,
Fig. 1.
Fig. 5 is a view similar to Fig. 4, with the, exception that it illustrates the
door locked.
Fig. 6 is a diagram plan view showing the door open and the operating
mechanism of the car locked.
Fig. 7 is a view in elevation showing the parts in the position shown in
Fig. 6.
Fig. 8 is a view showing the door locked in the position shown in Fig. 5.
In the drawings we have shown an ordinary sliding door and a hand-wheel for
operating the controlling mechanism of a hydraulic elevator.
It will be understood that our invention can be applied to any style of elevator
or any form of door, and it can be used for either passenger or freight service, as
desired.
A is the elevator-car.
B is one of the floors of a building.
D is a sliding door adapted to close the passage-way to the car. a is a
doorway leading to said passage-way from the car.
B1 are the guides for the car.

page_text: Secured to one of the floor-bearns within the well is a spring-latch E, which is
bowed, as shown in Fig. 3, and extends up into the path of an arm d on the door.
This arm is notched at d to receive the latch when the door is closed, as shown
in Fig. 8. When this latch is in position as shown in said figure it is impossible
to move the door, but as soon as the latch is depressed by the mechanism carried
by the car the door will be free to be opened.
On the ear is the shifting mechanism F, of which the hand-wheel forms a
part. This hand-wheel is within the car in easy access of the operator and on the
shaft, to which the hand-wheel is attached, is a pinion engaging with a
gear-wheel on the shaft. A crank-pin on this gear-wheel is connected by a
rod to the lever, pivoted at f' to a bracket a on the bottom of the car, as
shown in Fig. 3.
Adapted to the bearing a on the bottom of the car is a slide A', and this slide
is connected to the lever by a rod a³, so that on the movement of the hand-wheel
to stop the car the slide A' will be moved forward to the position shown in Fig. 3.
Carried by this slide is a roll a', which engages with the spring-latch E forcing it
out of the notch d' of the arm carried by the door, the slide A and its con-
nections thus constituting mechanism on the car connected to the motor-controlling
mechanism of the car and adapted to release the door from the latch when the
mechanism is operated to stop the car, so that it will be seen that as soon as the
operator stops the car by the mechanism above described the door will be unlocked
and will be free to be opened in the direction of the arrow Fig. 2.
On the face of the elevator well at one side of the spring-latch E is a plate G
carrying a stud 9 on which is hung a lever G'. The arm g of said lever extends
in the path of an arm d depending from the door, as shown in Fig. 2. The arm g¹
of the lever is weighted and the arm g is so shaped as to engage with the slide A
Lou-the-elevator-ear The slide bas a flange a back of which the arm g' of the
lever passes. On the opening of the door the depending arm of the door moves
away from the arm g of the lever G the weight g moves the lever G to the
position shown in Fig. 7, throwing the arm into engagement with the slide A',
and as the slide is positively connected to the motor-controlling mechanism on the
car it will lock the shifting mechanism and prevent the car moving in either
direction until the door is closed and its arm moves the lever G¹ to the position
shown in Fig. 2.-
It will be noticed that the flange a' of the slide A is long, so that in the event
of any leakage of the hoisting mechanism whereby the car should move, it will
not break the parts, but the slide A' will simply move slightly on the arm g of
the lever G without the parts being disengaged and without unlocking the motor-
controlling mechanism, and should the car accidentally move a distance greater
than the length of the slide the parts will simply become unlocked without causing
any breakage, but this will only occur in very rare instances. One advantage of
this construction is that as soon as the parts are detached the elevator-car and its
mechanism is entirely clear of the mechanism at the landing so that it is impossible
for the parts to foul one another.
It will be understood that other mechanism may be used to connect the slide A
with the motor-controlling mechanism.
Having now particularly described, and ascertained the nature of our said inven
tion and in what manner the same is to be performed we declare that what we
claim is :-
1. The combination of an elevator-car, the motor-controlling mechanism,
movable well-door at the landing, a latch adapted to lock the door in the closed
position with mechanism on the car adapted to release the door from the latch
when the mechanism is operated to stop the car so that the door can be opened
and connections on the car between the last-named mechanism and said motor
controlling mechanism substantially as described.
2. The combination of an elevator-car, motor-controlling mechanism, a sliding

page_text: door, a latch adapted to engage with the door when closed, a device secured to the
wall of the elevator-well, mechanism on the car connected to the motor-controlling
mechanism, said mechanism operating to release the door from the latch and in
turn to be locked by the device secured to the wall of the elevator-well so as to
prevent the car from moving when the door is opened, the said device being
held clear of the mechanism on the car by the door when it is closed, substantially
as described.
3. The combination in an elevator, of the car, motor-controlling mechanism, a
movable well-door, a spring latch fixed in the well, an arm on the door with which
the latch engages, a slide on the car and connections on the car between the said
slide and the motor-controlling mechanism on the car so that when the car is
stopped the slide is moved out and acts to release the door from the latch so that
it can be opened, substantially as described.
4. The combinator of an elevator-car, motor-controlling mechanism, a sliding
door, a spring-latch fixed in the elevator-well, an arm on the door, with which the
latch engages, a sliding bar connected to the motor-controlling mechanism of the
car, a lever hung in the well, one arm of said lever adapted to engage with
the slide and lock the motor-controlling mechanism and the arm on the door acting
on the other arm of the lever when the door is closed so as to release the slide
substantially as described.
5. The combination of the elevator-car, motor-controlling mechanism, a sliding
door, a latch on the wall of the elevator-well adapted to engage with the door, a
lever pivoted to the elevator-wall and adapted to be acted upon by the door, a
slide carried by the car and mechanism for moving the said slide out so as to
release the latch, said slide having a flange with which the pivoted lever engages
when the door is opened so as to lock the slide, substantially as described.
6. The combination of the elevator-car, motor-controlling mechanism, a spring-
latch secured to the wall of the elevator well and adapted to engage the door, a
lever pivotted to the wall of the elevator-well to be acted upon by the door, a slide
carried by the car and having a vertical flange, mechanism for projecting said
slide so as to act on the latch and release the door, an arm on the lever adapted to
rest back of the flange on the slide but so arranged as to allow for the free movement
of the elevator-car in case of leakage substantially as described.
7. The combination of the elevator-car, motor-controlling mechanism, the door,
a spring-latch fixed on the wall of the elevator-well adapted to engage with the
door, a slide A' on the car, a lever connected to said slide, a hand-operating device
within the car connected to the motor-controller, a shaft on which the hand-
operating device is mounted, a pinion on said shaft, a gear-wheel engaging with
said pinion and having a crank pin connected to the lever so that on the turning
of the hand-operating device to stop the car the slide will be projected to release
the door from the latch, substantially as described.
Dated this 27th dar of March 1896.
JOHNSONS & WILLCOX,
47 Lincoln's Inn Fields, London, W.C., Agents.