Back to results
US 4,074,642 AGranted
Sewing machine with programmable memory
AssigneeThe Singer Company
InventorJohn Addison Herr
Life of this patent
Estimating the term…
Loading patent…
Loading patent…
AssigneeThe Singer Company
InventorJohn Addison Herr
Estimating the term…
This disclosure relates to electronically controlled sewing machines and in particular to the combination of such a machine with a re-programmable static memory with which an operator can program in input data representative of stitch position coordinates for selected patterns, which input data will be encoded into digital form, stored and decoded into input signals for initiating operation of the sewing machine stitch position actuating means to produce patterns corresponding to the operator selected pattern. The re-programmable memory can be located remote from the machine or can be built in as an integral part of the structure of the machine itself. The machine may also contain a static read-only-memory (ROM) having fixed patterns for operation of the machine with or without a re-programmable memory and includes switching means for disconnecting the read-only-memory when the reprogrammable memory is connected to the machine. More specifically the invention provides for a programmer by which the operator can physically draw a pattern design of the operator's own choosing and the programmer will generate input data for use by the machine for reproducing the drawn pattern design.
In a sewing machine having stitch forming means operative to form successive stitches including mechanism for influencing the switch position coordinates of said successive stitches in the formation of a pattern of stitches, logic means responsive to input data representative of stitch position coordinates for producing stitch position coordinate electrical signals, actuating means responsive to signals from said logic means for controlling the position of said stitch forming means in accordance with input data fed to said logic means, and re-programmable programming means operable connected with said sewing machine, said programming means being responsive to operator manipulation and including static memory means operative for storing digital input data corresponding to a stitch pattern selected by the operator and for transmitting electrical digital output signals to said logic means such that an operator may select a stitch pattern program for entry into the sewing machine for automatic reproduction of the switch pattern by the sewing machine and said programming means including a plurality of switching layers with each said layer being responsive when activated for producing voltage signals representative of input data of switch position coordinate information.
Dependencies are inferred from the claim text.