In the 1932 Intertype Parts, Supplies and Accessories book (Brooklyn, NY: Intertype Corporation, 1932), page 324, Intertype offers the Margach feeder (only). By the 1935 parts book (the next edition that I currently have), they have dropped this and replaced it with a very similar feeder of their own brand (part number U-1279). They also include a parts diagram and list for this feeder (something they had not done for the Margach feeder).
The next parts book I have is the 1942 edition, seven years later, where two Intertype brand feeders are now offered. One is basically the same as that offered in 1935. It is now called the "Two-Pig Model," and is available in two versions: U-1279 (for 30-em machines) and U-3731 (42-em). Presumably the latter feeder feeds faster to accomodate the increased metal needs of the 42-em machines. The other model, the "One-Pig Model," is of distinctively different appearance. It is available in three versions: U-4593 (for 30-em Models A, B, C, D, F, G, and H), U-4594 (for 42-em Models A, B, C, D, F, G, and H), and U-4580 (for "streamlined" [that is, "universal" or rectangular base] models C4, F4, G4, and H4 [without reference to mold measure capacity]).
This 1942 edition includes the parts diagram/list for the Two-Pig Model, but not yet the One-Pig Model (I have what is probably the 1944 catalog, which does have this). These two feeders continue as the sole metal feeder offerings in the Intertype parts books until at least 1964 (the most recent book I have).
J. Ashworth, in volume II of Operation and Mechanism of the Linotype and Intertype (London: Staples Press Limited, 1955): 204, illustrates an Intertype feeder which looks very much like the "One-Pig Model" (but with a different pipe bracket). Unfortunately, Ashworth is in copyright and so I cannot reproduce this material here.
I'll cite this as from the 1944 Intertype Parts, Supplies and Accessories book (Brooklyn, NY: Intertype Corporation, 1944), pp. 389-391, but actually I'm not completely certain. My copy is missing the title page, but has "1944" pencilled in on the front flyleaf verso by a previous owner.
The Intertype books from which the extracts here were taken were published in the US without copyright notice at a time when such notice was required. They therefore passed into the public domain upon original publication.
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