https://patents.google.com/patent/US2923905
https://patents.google.com/patent/US3617966
https://patents.google.com/patent/US4890086
https://patents.google.com/patent/US20130088314A1/en
Good description of manufacturing process - assembling process
http://www.vijaielectricals.com/bi_ind_hyd_1.html
"TRANSFORMER ASSEMBLER I"
Job Description:
1) Connects coils to terminals and builds up supporting structure of power transformers, according to wiring and structural diagrams: Wraps insulation around coil and secures with adhesive tape.
2) Drives fiber wedges between coil and core, using mallet to hold coil around leg of transformer core.
3) Crimps leads to magnet wire, using hand or hydraulic crimper and tapes connections.
4) Crimps tags to lead wires to conform with wiring diagram.
5) Assembles support structure, clamping angles, terminals, tanks, or cabinet panels, using gas or electric welding equipment, welding jigs, tie bolts, nut runner, drill press, and power drill.
6) Brazes coil leads to specified tanks of terminal strip.
7) May fabricate coils and assemble component parts to build electric power, distribution, or specialty transformers according to blueprints and wiring or structural diagrams.
8) Winds copper wire around jig, fixture, or spindle to form primary coil.
9) Fabricates secondary coil on copper plate of specified thickness, using drill, calipers, and bandsaw.
10) May be designated according to type of transformer assembled as Distribution-Transformer Assembler; Power-Transformer Assembler; Specialty-Transformer Assembler; or by type of core used as Hypercil-Core-Transformer Assembler.
https://dot-job-descriptions.careerplanner.com/TRANSFORMER-ASSEMBLER-I.cfm
"TRANSFORMER ASSEMBLER II"
Job Description:
1) Assembles transformers according to specifications, performing any combination of following tasks: Reads work order to determine assembly procedure specified by customer.
2) Cleans coils to remove materials accumulated during production processing.
3) Removes accessories from coils, using screwdriver, and wraps coils with paper and tape, leaving ends of wire leads exposed.
4) Inserts ends of wire leads of cores and coils into wire stripping machine to remove coating from wires.
5) Inspects and twists stripped wires together by hand to join designated colored wires.
6) Disassembles cores to facilitate attachment of coils and attaches cores to coils, using cloth tape and glue.
7) Secures core/coils, using metal strapping, metal cutters, and band clippers.
8) Positions wooden wedges that facilitate further processing of units in designated openings of core/coils, using rubber hammer.
9) Turns knobs to set controls of test machine to verify that core/coils operate within specified range, attaches clips to wire leads of core/coils, and observes machine dials to determine test results.
10) Routes defective core/coils for rework.
11) Places component parts of terminals in press, activates press to join parts; or positions parts in fixture and joins parts, using solder and soldering iron, to fabricate terminals.
12) Attaches terminals to core/coils, according to work order, using handtools, spacers, and soldering iron.
13) Applies adhesive to inside of transformer case side sections.
14) Positions and aligns wires and terminals of core/coils with openings in sections.
15) Positions core/coil and side sections in welding machine, aligns seams of sections for welding, and presses buttons to activate welding machine to weld seams.
16) Attaches clip probes to transformer terminals, and activates test equipment to determine whether units meet specifications.
17) Positions, inserts, and attaches transformer parts, such as insulation panels, front and back metal covers, and base plates to complete assembly of transformers, using handtools.
18) Stamps identification numbers on base of transformer, using metal dies and hammer.
19) Repairs transformers with minor defects.
https://dot-job-descriptions.careerplanner.com/TRANSFORMER-ASSEMBLER-II.cfm
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