Improvements in and relating to Automatic Receivers for Pneumatic and other Dispatch Systems.
Year: 1892

page_text: Date of Application, 16th Aug., 1892-Accepted, 3rd Dec., 1892
COMPLETE SPECIFICATION.
Improvements in and relating to Automatic Receivers for Pneumatic
and other Dispatch Systems.
I, ANDREW BRYSON, a citizen of the United States of America, residing at
No. 18 West Twenty-first Street, in the City, County and State of New York,
one of the United States of America, Civil Engineer, and Member of the American
Society of Civil Engineers, do hereby declare the nature of this invention and in
what manner the same is to be performed, to be particularly described and ascer-
tained in and by the following statement :-
1.'.
The object of this invention is to provide an automatic device whereby a carrier
on its passage into and out of the receiving station may alternately open and close
two gates in its path, and the device is more particularly applicable to a pneumatic
receiving station in which the two gates form respectively the entrance and the exit
for a carrier propelled by pneumatic or other means, and at the same time auto-
matically and continuously close the end of the pneumatic tube either at the
entrance or exit of the receiver, in such wise as to at all times present an abutment
within the tube for the compression of air to form an air cushion for an approaching
carrier, when the prior carrier is passing in and out of the receiver. But the
invention is not limited in its use to such combination, as it is applicable to all uses
wherein it is desired that on the passage of a carrier over a way, one or more gates
should be automatically opened and closed.
And the invention consists of gates suspended from the arms of pivoted levers,
the other arms of which engage with lifting cams mounted on a shaft which is
rotated by a gear wheel mounted thereon, or other suitable device actuated by any
suitable motor; the motor being set in motion and stopped by the passage of the
carrier.
In the accompanying drawings and description is shown an electric motor started
and stopped by the automatic making and breaking of its circuit on the passage of
a carrier, but the invention is not limited to its use with such a motor, as any
driving mechanism will suffice, provided that it be set in operation and again
stopped by the passage of a carrier.
In the accompanying drawings which illustrate the invention―
Figure 1 is a side elevation of the automatic electric receiver, and
Figure 2 a plan view of the same.
A, is the receiving end of a pneumatic tube having a downward incline in order
to facilitate by gravity the descent of the carrier after leaving the main line. B, is
an electric motor. b, is a toothed wheel actuated by the motor which gears with
the pinion, C, keyed to the shaft, D, rotating in bearings, e, e, on the frame, E.
F, is a lifting cam keyed to the shaft, D. G, is a lever fixed to the shaft, G', which
rocks in bearings, e, e', on the frame, E. One arm, g, of the lever, G, bears against
the periphery of the cam, F. The other sector-shaped arm, G", is connected by a
chain, H, steel straps, or other suitable means to the yoke, I. From the yoke, I, is
suspended by the rods, J, J, which pass through the guides j, j, on each side of the
tube, A, the lower yoke, I', to which is fastened the gate, X. Gate, X, rises and
falls through a slot in the bottom of the tube, A, and between the guides, a, a,
formed in the tube.
It carries a
L, is a sector shaped cam also keyed to the shaft, D. M, is a lever arm, fixed to
the shaft, M', which rocks in bearings, el, e¹¹, on the frame, E.
friction roller, m', which bears against the periphery of the cam, L. Another
sector-shaped arm, M", also keyed to the shaft, M₁, is connected directly by a
chain, H', or in any suitable way to the gate, Y, which rises and falls through the
slot, K, between guides, a', a', in the tube, A. N, and O, are counter-weights

page_text: keyed respectively to the sector shafts, G', and M', to balance the gates, X,
and Y.
In place of the two separate arms, M, M, keyed to the shaft, M', the lever may
be formed in a single piece, as in the case of the lever, G, or all of the arms, M, M",g, G",
may be attached separately to their respective shafts without departing from the
spirit of the invention; neither is the said invention limited to the sector-shaped
ends of the levers.
P, and Q, are wires forming the circuit of the electric motor. This circuit is
made and broken by the rise and fall of the contact piece, R, between the
terminals, p, g. Contact piece, R, is depressed and the circuit made by the down-
ward movement of the hinged plate, S, to which it is attached. T, is a pivoted
lever on one arm of which rests contact piece, R, while the other arm bears against
a rod, U, the other end, w, of which when raised by the lever, T, engages the lug,,
on the cam, F.
The operation of the device is as follows: When the receiver is in its normal
position, as shown in Figure 1, the gate, X, is open and the gate, Y, closed, and
one arm of the lever, T, having been pushed down by the passage of the lug,
over the end, u, of the rod, U, the contact, R, is raised and the motor circuit
broken.
On the passage of a carrier into the receiver the plate, S, is depressed and the
circuit made through the motor by the contact, R. The motor causes shaft, D, to
revolve, and with it cams, F, and L. Cam, F, at once depresses the arm, g, of the
lever, G, which lifts the gate, X, closing the tube, A. When this point is reached
the arm, M, has also reached the point, 7, on the cam, L, whereupon the arm, M, is
in turn depressed and the tube, A, opened by the lifting of the gate, Y, allowing
the carrier to pass out of the receiver.
The cams now continue to revolve together until the arm, M, reaches that point
on the cam, L. where it is allowed to rise, clearing the gate, Y. When the gate, Y,
has closed the cam, F, has been revolved sufficiently to allow the arm, g, to rise and
the gate, X, to be opened, at which point the lug, f, on the cam passing over the
extremity, u, of the rod, U, depresses the lever, T, breaks the circuit, stops the
motor, and the receiver is again in its normal position prepared for the arrival of
the next carrier.
It is thus seen that the receiver is maintained continually closed by either the
gate, X, or Y, that the operation of the motor is continuous, and the gates
actuated by a positive motion, and that there is no reversing of the motor or cam
action.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed, I declare that what I
claim is :-
1. The combination with a way and carrier of a pivoted lever, a gate suspended
from one arm of the lever, a lifting cam mounted on a shaft and engaging with the
other arm of the lever, and mechanism automatically actuated by the passage of
the carrier to rotate the cam, substantially as described.
2. The combination with a way and a carrier, of two independently pivoted
levers, each having a gate suspended from one arm thereof, lifting cams mounted
on a shaft engaging with the other arms of the levers in such relation as to
alternately raise and depress said arms, and mechanism automatically actuated by
the passage of the carrier to rotate the cams, substantially as described.
3. The combination with a way and a carrier, of a pivoted lever, a gate suspended
from one arm of the lever, a lifting cam mounted on a shaft and engaging with the
other arm of the lever, an electric motor, a circuit to operate the motor, suitable
gearing between the motor and cam for revolving the cam, and a circuit breaker
automatically operated to make and break the circuit of the motor by the passage
of the carrier, substantially as described.
4. The combination with a way and a carrier, of two independently pivoted

page_text: levers, each having a gate suspended from one arm thereof, lifting cams mounted
on a shaft and engaging with the other arms of the levers, an electric motor, a
circuit to operate the motor, suitable gearing between the motor and cams for
revolving the latter, and a circuit breaker automatically actuated to make and
break the circuit of the motor by the passage of the carrier, substantially as
described.
5. The combination of a way and a carrier, of the lever arms, M" and M, having
the friction roller, m, both keyed to the shaft, M', rocking in bearings, ell, the
gate, Y, suspended from the arm, M", the lever, G, keyed to the shaft, G', rocking
in bearings, e', the gate, X, suspended from the lever, G, the lifting cams, L, F,
mounted on the shaft, D, turning in bearings, e, the gear wheel, C, the electric
motor, B, having the gear wheel, b, its circuit, P, Q, and a contact breaker auto-
matically actuated by the passage of the carrier to make and break the circuit,
substantially as described.
6. The combination with a way and a carrier, of the lever arm, G, mounted on
the shaft, G, the gate, X, suspended from one arm of the lever, G, the lifting
cam, F, engaging with the other arm of the lever, G, and mounted on the shaft, D,
turning in bearings, e, the gear wheel, C, mounted on the shaft, D, the electric
motor having the gear wheel, b, its circuit, P, Q, and a contact breaker auto-
matically actuated by the passage of the carrier to make and break the circuit,
substantially as described.
7. The combination with a way and carrier, of the lever arm, G, mounted on the
shaft, G1, the gate, X, suspended from one arm of the lever, G, the lifting cam, F,
having the lug, f, and engaging with the other arm of the lever, G, and mounted on
the shaft, D, turning in the bearings, e, the gear wheel, C, mounted on the shaft, D,
the electric motor having the gear wheel, b, its circuit, P, Q, the plate, S, in the
path of the carrier, the lever, T, the contact, R, located in the circuit between the
plate and one arm of the lever, T, and the rod, U, actuated by the other arm of
the lever, T, to engage the lug, f, on cam F, substantially as described.
8. The combination with a way and a carrier, of an electric motor, a cam rotated
by said motor, a circuit to operate the motor, a lug on said cam, the plate, S, in the
path of the carrier, the lever, T, the contact, R, located in the circuit between the
plate and one arm of the lever, and the rod, U, actuated by the other arm of
the lever to engage the lug on the cam, substantially as described.
Dated this 16th day of Act 1992.
JENSEN & SON,
77, Chancery Lane, London, W.C., Patent Agents.