At first glance, A.Pilbeam's patent of 1863 looks like a Grover & Baker variant, however the design is, in fact, more closely akin to that of a Wheeler Wilson machine. This stationary bobbin lockstitch allows the operator to assume a more conventional usage, i.e. feeding the work fabric away from them.
The machine also features slider plates on the top bed to allow access to a novel tiltable shuttle housing. Pilbeam also designed a treadle option in the form of a hinged trunk, into which the whole assembly folded neatly away for transport.

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