Your machine cancel was made by a Barry machine that had a rectilinear postmark. That looks like a long word, but it simply means that the postmark was made up of several horizontal lines of text. The killer for this example is a set of diagonal lines. Other Barry machines impressed circular postmarks and oval postmarks. Barry cancels can often be identifed by the fact that the feeder mechanism for the machine was a series of pins that grabbed the card or envelope near its right edge. If there is evidence of slight pin impressions near the right edge of the card or envelope, the cancel may be a Barry. Here is a picture of the Barry rectilinear postmark with diagonal line cancel machine impression [15k GIF].
There is a bit more information available about these machines on my Machine Web page.
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![the Barry rectilinear postmark with diagonal line cancel machine impression [15k GIF]](./machines/barry_st_diag.gif){kind=link}