US2754432A

US2754432A - Dual control system

Info

Publication number: US2754432A
Application number: US426628A
Authority: US
Inventors: Mostek Peter
Original assignee: Individual
Current assignee: Individual
Priority date: 1954-04-30
Filing date: 1954-04-30
Publication date: 1956-07-10
Anticipated expiration: 1973-07-10

Description

July l0, 1956 P. MosTi-:K 2,754,432

DUAL CONTROL SYSTEM Filed April 30, 1954 l C i lLocouor/VE p I I Iyli 2ND.

LL ocoMor/vf I I /08 Peler Mosfet INVENTOR.

aan/#W Elan-xanax DUAL CONTROL SYSTEM Peter Mustek, Independence, Ohio Appiication April 30, 1954, Serial No. 426,628

1 Claim. (Cl. 307-140) This invention relates to electrical control systems and has for its primary object the provision of electrical circuits capable of being utilized to control two separate loads totally independent of each other utilizing only one pair of conductors.

A further object of this invention resides in the provision of a dual control system for use in separately and independently operating two load devices, such as electric trains, while utilizing only a pair of conductors such as exemplified by the tracks on which the trains ride to complete the operative electrical circuits.

rEhe invention is especially adapted for use in conjunction with toy or miniature trains so that the speed of two independent trains traveling on a single track can be separateiy controlled and varied.

Still further objects and features of this invention reside in the provision of a dual control system which is simple in its components, composed of readily available parts, which may be used in conjunction with various existing types of equipment, and which is comparatively inexpensive thereby permitting the wide use and distribution.

These, together with the various ancillary objects and features or the invention which will become apparent as the following description proceeds, are attained by this dual control system, various embodiments of which have been illustrated in the accompanying drawings, by way of example only, wherein:

Figure l is a circuit diagram of an embodiment of the invention especially adapted for use in controlling toy electric trains;

Figure 2 is a schematic diagram illustrating the principics of the invention which is adapted for use in conjunction with electric trains and which utilizes a pair of transformers; and

Figure 3 is a circuit diagram of an arrangement for turning two load devices on or off such as two electric iainps, or the like.

With continuing reference to the accompanying drawings wherein like reference numerals designate similar parts throughout the various views, and with initial attention directed to the embodiment of the invention, as is shown in Figure 1, it will be noted that this dual control system is especially adapted for use in conjunction with ciectric trains which are adapted to ride on track formed from a middle rail 12 which is insulated from the outside rails 14. The dual control system is adapted to control two independent electric trains operated by locomotives shown schematically at 16 and 18.

The dual control system is adapted to be connected to the source of alternating current as at 20 which is connected to the primary coil 22 of a transformer generally indicated at 24 having a secondary coil 26 provided with a pair of pick-

up slides

28 and 30 forwardly mounted thereon.

Connected to the

slides

28 and 30 are

rectifiers

32 and 34 which are of opposite polarity. The

rectiers

32 and 34 are both connected to conductor 36 which, in turn, is connected to the middle rail 12. Connected to the midnited States Patent O 2,754,432 Patented July 10, 1956 r. ICC

dle rail 12 are receiving

rectifiers

38 and 40 which are of the same polarity as the

rectiers

32 and 34, respectively, and which are connected to the

motors

44 and 46 of the

locomotives

16 and 18. The motors are connected through conductors 4S and 50 to the outer rails 14 which are in effect but a single conductor.

Condensers

52 and 54 are connected to the

rectiers

38 and 40 in parallel with the

motors

44 and 46.

inasmuch as the voltage picked up from the transformer secondary 26 by the

slides

28 and 30 will be transmitted by the transmitting

rectiers

32 and 34 as only the positive half and the negative half respectively of the sign wave form of electrical impulse, the

motors

44 and 46 will be energized by these rectied impulses. This arrangement in view of the respective polarities of the transmitting and receiving rectifiers, will not allow feed back from the

respective load devices

16 and 18. In order to supply a continuous and substantially four way form of power to the

motors

44 and 46, it will be seen that the Condensers 52 and S4 store power when the receiving rectitiers 33 and 4t) permit the transmission of power and when they prevent the other half wave of power from being delivered to the

motors

44 and 46, the Condensers and 54 will then discharge.

Referring now to the embodiment of Figure 2, it will be noted that herein two

separate transformers

60 and 62 are energized by the alternating current supply 64. Connected to the secondaries of the transformers by means of any convenient means, are the transmitting

rectiers

66 and 68 which are connected to a single conductor 70. Connected to the conductors 70 are the load devices 72 and 74 and Condensers 76 and 7o are effectively arranged so as to be in parallel connection with the respective load devices 72 and 74- so that when current is permitted t0 ow through the receiving rectifiers and 82 the

condensers

76 and 78 will become charged so as to be able to deliver their stored energy to the load devices 72 and 74 when the respective rectiers do not permit passage of electrical energy. The single line 84 interconnects the load devices with the secondaries of the

transformers

60 and 62 to complete the operative electrical circuits.

In the embodiment of the invention as is shown in Figure 3, no transformers are utilized but switches and 92 interconnect the dual control system with the source of alternating current. Transmitting

rectiiiers

94 and 96 are connected through the switches 9() and 92 to the source of alternating current and are connected by means of a single conductor 98 to the

receiving rectiers

100 and 102. The load devices 194 and i are connected to the rectiiers 100 and 162 and to the supply line 10S. Condensers 110 and 112 are connected in parallel connection with the

loads

104 and 106 so that the Condensers Will become charged when the rectifiers 1613 and 102 are transmitting electrical power so as to assure a substantially rectified full wave of power to the

load devices

104 and 106.

From the foregoing, it can be readily understood that utilizing either the slides 2S; and 39, the transformers 6l? and 62, or the switches 9i? and 92 in the various forms of the invention, control of either one of two load devices or control of both of the load devices at the same time can be achieved. Further, since from the foregoing the construction and advantages of this invention can be readily understood, further description is believed to be unnecessary.

However, since numerous modifications will readily occur to those skilled in the art, after a consideration of the foregoing specification and accompanying drawings, it is not intended to limit the invention to the precise embodiments shown and described, but all suitable modifications and equivalents may be readily resorted to which fall within the scope of the appended claim.

w A-.. i

What is claimed as new is as follows:

A control system for supplying variable amounts of electrical power to a first load device and a second load device comprising a source of alternating current, a transformer having a primary coil connected to said source of alternating current, said transformer having a secondary coil provided with a pair of pickup slides movably mounted thereon for connecting said secondary coil to said load devices to supply variable amounts of electrical power to said load devices, a iirst transmitting rectiiier and a second transmitting rectifier each connected to one of said slides, said transmitting rectiliers being of opposite polarity and being connected to a single conductor, a first receiving rectifier and a second receiving rectiiier connected to said single conductor, said iirst receiving rectifier being connected to said first load device, said second receiving rectifier being connected to said second load device, and condensers connected to said receiving rectiiiers in parallel connection with said load devices, said condensers being charged when said receiving rectiliers pass current to said load devices, said condensers discharging to provide power to said load devices when said receiving rectiiiers prevent passage of current to said load devices.

References Cited in the file of this patent UNITED STATES PATENTS 1,778,465 Ozanne Oct. 14, 1930