Photographic darkroom control system with timing means
First Claim
1. A process timing and controlling device system for use in photographic darkrooms involving multiple timing and control process steps comprising,a control console, programmable in at least on channel to automatically run and step through substantially all timing and control process steps,step timing means in at least one channel for counting down time remaining in a particular process step,step timing indicator means in at least one channel for indicating time remaining in a particular process step,means defining a power supply connecting a source of power with said console and said timing means which when activated supplies power to said console and timing means,means for initiating a program step in at least one channel,switching means in at least one channel for manually stepping through steps independently of the programmed time including means for interrupting a programmed timing step during automatic running thereof and means for advancing from the interrupted timing step to the subsequent program step,a plurality of relays for operating programmed timing and control functions, and relay driving means programmed to select an appropriate output to activate each said relay.
0 Assignments
0 Petitions
Accused Products
Abstract
Process timing and controlling system for use in photographic darkrooms involving multiple timing and control process steps including a control console, programmable in at least one channel to step through substantially all timing and control process steps, timing means in at least one channel for measuring time remaining in a particular process step, timing indicator means in at least one channel for indicating time remaining in a particular process step, a source of power connecting the console and the timing means which when activated supplies power to the console and timing mean, means for initiating a program step in at least one channel, switching means in at least one channel for stepping through the steps independently of the programmed time, a plurality of relays for operating programmed timing and control functions, and relay driving means programmed to select an appropriate output to activate the relay.
-
Citations
30 Claims
-
1. A process timing and controlling device system for use in photographic darkrooms involving multiple timing and control process steps comprising,
a control console, programmable in at least on channel to automatically run and step through substantially all timing and control process steps, step timing means in at least one channel for counting down time remaining in a particular process step, step timing indicator means in at least one channel for indicating time remaining in a particular process step, means defining a power supply connecting a source of power with said console and said timing means which when activated supplies power to said console and timing means, means for initiating a program step in at least one channel, switching means in at least one channel for manually stepping through steps independently of the programmed time including means for interrupting a programmed timing step during automatic running thereof and means for advancing from the interrupted timing step to the subsequent program step, a plurality of relays for operating programmed timing and control functions, and relay driving means programmed to select an appropriate output to activate each said relay.
Specification
-
- Resources
-
Current AssigneeRussell A. Parker
-
Original AssigneeRussell A. Parker
-
InventorsParker, Russell A.
-
Primary Examiner(s)Hix, L. T.
-
Assistant Examiner(s)MATHEWS, ALAN A
-
Application NumberUS06/236,055Time in Patent Office670 DaysField of Search354/297, 354/299, 354/327, 354/328, 355/27, 355/35, 355/36, 355/37, 355/38, 355/67, 355/68, 355/69, 355/77, 340/309.1, 340/309.4, 307/141, 307/141.4US Class Current396/578CPC Class CodesG03D 13/007 Processing control, e.g. te...
