Laminated core with two coils in position; type of punchings used on some machines having concentrated whole coil windings.
In construction, the cores of the field poles are built up from punchings of laminated steel, and assembled under considerable pressure between malleable iron or steel end plates and riveted together.
These consist of laminated punchings securely clamped between two cast steel end plates.
The field poles are laminated, being built up of steel punchings held between malleable iron or bronze end plates, the latter being used on high speed machines.
Heavy steel clamping fingers hold the core punchings in place and numerous ventilating ducts are provided in the core at frequent intervals to allow free circulation of cool air.
It consists of a core of punchings built up directly on the primary shaft and carrying the primary winding, which is divided into four coils.
This winding also serves to hold the primary punchings together, and it consists of two copper rods riveted to the two cast brass flanges.
The rotor flanges, both top and bottom, are provided with discs which are turned in alignment with the punchings, and these discs bear against the top and bottom flanges between which the secondary punchings are clamped.
Punchings and drillings are also treated by the process known as "puddling.
The four remaining legs consist of punchings of equal width.
The open edge of the shell is then rolled over the punchings under heavy pressure, thus preparing the field structure for the machining and fitting of the end heads and base.
In the smallest sizes the punchings are mounted directly on the shaft, which is properly machined to hold them firmly.
The punchings of each size transformer are all of the same length, assembled alternately, and forming two lap joints equally distributed in the four corners of the core, thereby giving a magnetic circuit of low reluctance.
These punchings are laid together so as to form a laminated soft-iron field, the limbs of which are about square in cross-section.
The core of this bobbin and the return path for the magnetic lines of force set up in it are composed of soft iron punchings of substantially =E= shape.
The terminal wires of both windings of each coil are brought out to terminal punchings on one end of the base-board to facilitate the making of the necessary circuit connections.
The above list will hopefully give you a few useful examples demonstrating the appropriate usage of "punchings" in a variety of sentences. We hope that you will now be able to make sentences using this word.
