CERTAIN NEW AND USEFUL IMPROVEMENTS IN ELEVATORS FOR BUILDINGS
Year: 1876

page_text: LETTERS PATENT to Henri Adrien Bonneville, of the British and Foreign
Patent Offices, 18, Rue de la Chaussée d'Antin, Paris, France, and 6, Piccadilly,
in the County of Middlesex, Patent Agent, for the Invention of "CERTAIN
NEW AND USEFUL IMPROVEMENTS IN ELEVATORS FOR BUILDINGS." A com-
munication from Rufus K. Terry, residing at Jersey City, County of Hudson,
State of New Jersey, United States of America.
COMPLETE SPECIFICATION filed by the said Henri Adrien Bonneville at tho
Office of the Commissioners of Patents on the 4th August 1876.
rt
HENRI ADRIEN BONNEVILLE, of the British and Foreign Patent Offices, 18, Rue
de la Chaussée d'Antin, Paris, France, and 6, Piccadilly, in the County of Middlesex,
Patent Agent.
CERTAIN NEW AND USEFUL IMPROVEMENTS IN ELEVATORS FOR
BUILDINGS." (A communication from Rufus K. Terry, residing at Jersey City, County
of Hudson, State of New Jersey, United States of America.)
The Invention relates to certain new and useful improvements in elevators for
buildings, which are simple in construction, effective and efficient in operation, and
durable in use; and the follewing description of which will enable others skilled in
the art to which they appertain to make and use the same.
The novelty of the Invention relates to a new and useful method of opening,
locking, and holding together the sections of a self-closing hatchway, and to im-
proving the device of holding the car, in case of accident, and consists in the
employment of automatic springs and catch plates, and in the use of a lever in
combination with pawls, rods, and racks, whereby the desired result is accomplished,
the construction and operation of which will herein-after be more fully shown and
described.
Referring to the Drawings, in which the Figures are elevations and top plan views,
being partly in detail sections, showing the Invention secured thereto, Figs. 1 and 2
show the car or elevator entering a new story, and in the act of self-opening tho
hatchway.

page_text: Figs. 3 and 4 show in detail the safety arrangement to hold the car in case of
accident; and Figs. 5 and 6 represent the sections of the self-closing hatchway
locked and unlocked.
"
In the Drawings A represents the platform or car, which is elevated or lowered
by means of the rope B, which is to be connected to or with mechanism of any
suitable or convenient construction for the purpose of operation. At opposite sides
of the car A are vertical duplex cam grooves C, C, for the purpose of opening and
closing the traps.
The duplex cam groove C, as seen in Fig. 1 of the Drawings, is so arranged that
the grooves c, c, meet and connect at both ends of the vertical plane of the moving
framework of the elevator or car, and forming thus in and sharp angles.
D, D, represent vertical standards having teeth or racks a, a, and arranged on
opposite sides of the car or platform, which is provided on its corresponding sides
with grooves o, Fig. 1, in which the rack rests, thus forming a guide to prevent any
lateral movements of the car.
E, E', represent sections of the hatchway, each section provided with two rollers
b, b'. In case the sections E, E', are closed two rollers b, b', are located near each
other, as seen in Fig. 5 of the Drawings. The elevator in passing through these
traps parts both rollers b and b' in such a way that the above-described sharp point
kor enters between the rollers, and in moving on slides the sections E and E'
sideward into the recess d and d', Fig. 1, the grooves c, c, serving as the guides for
the rollers b and b'.
F, in Fig. 5, represents a hole bored through the centre of the hatchway for the
purpose of letting the hauling rope B pass through the closed trap doors. Another
holc, corresponding to hole F, is bored through the platform of the elevator for
the purpose of bringing in case of fire to the upper stories of a house provided with
such an elevator a water hose, avoiding thus all unnecessary draught from the
bottom to the top of the house.
S, S', in Figs. 5 and 6, represent the metallic springs, which are embedded in the
ends of one section of the hatchway; and P, P', represent the catch plates, which
are embedded in the ends of the section of the hatchway opposite that to which
the springs are secured. These springs S, S', are automatic in their action, and are
controlled and operated by the inner vertical plane of the moving framework C of
the elevator or car, as shown in C, Fig. 6.
The car or elevator in its ascent or descont presses against the projecting knobs,
shown at x, x', Figs. 5 and 6, and thereby releases the springs from the catch plates
P, P', and allows the two sections of the hatches to open and close with the upward
or downward movement of the car. After the passage of the car or elevator
through the hatchway the two sections of the same are brought together, and the
springs S, S', being relieved from the action of the car fall back into the catch
plates P, P', thereby locking or securing the two sections of the hatch together.
e, e, in Figs. 3 and 4, represent safety pawls situated upon the under side of the
car, and engage with the teeth of the rack, and thereby support the car against
descent in case of an accident.
Under ordinary circumstances the pawls remain or are held disengaged, but in
case of an accident to the hoisting mechanism, or for other cause, the lever g drops
and lowers the cross bar j to which the connecting rods i, i, are attached. The
pawls e, e, are held firmly in the rack by means of the springs f, f, and thereby
support the car against descent, when power is not applied to the lever g to release
them.
Having thus described the nature of the said Invention, and in what manner the
same is to be performed, what I claim as new and desire to secure by the Royal
Letters Patent is,-
1st. The combined arrangement of the vertical duplex cam grooves C, C', the
hatchway E, E¹, with holo F and rollers b, b', constructed and operating us set
forth.
2nd. The combined arrangement of the straight flat spring, catches S. S'. with

page_text: knobs x, x', and catch plates P, P', let into the edges of the horizontal hatches,
all constructed and operating in the manner and for the purpose set forth.
3rd. The spring pawls e, e, rods i, i, cross bar j, and lover g attached to the car,
in combination with the racks D, a, all arranged to operate as and for the purpose
specified.
In witness whereof, I, the said Henri Adrien Bonneville, have hereto set my
hand and seal, this First day of August, in the year of our Lord One
thousand eight hundred and seventy-six.
H. BONNEVILLE. (LS.)

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