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US 4,051,794 AGranted
Automatic sewing machine
AssigneeUnion Special Corporation
InventorsWilliam P. Herzer, Robert E. Cullen
Life of this patent
Estimating the term…
Abstract
An automatic sewing machine comprising, a sewing needle, a work holder for moving a work piece relative the needle, and memory means having a plurality of randomly addressable storage locations for retaining the data words. The sewing machine has address means for sequentially selecting the storage locations, and means responsive to the data words of the selected storage locations for moving the work holder and performing a sewing operation.
Claims41
An automatic sewing machine, comprising:
- memory means having a plurality of randomly addressable storage locations, said storage locations having a plurality of information bits defining a plurality of separate data banks with said storage locations sharing bits in separate banks;
- address means for selecting said storage locations;
- means for separately selecting any of said data banks of the selected storage locations and excluding at least one unselected bank at the start of a sewing sequence;
- means for reading information from the selected data bank of the selected storage locations and for generating signals representing the read information;
- and
- means responsive to said signals corresponding to the selected bank for forming a stitch pattern in a work piece.
3 more elements
An automatic sewing machine of the type having a sewing needle defining a timing cycle of the machine between consecutive reciprocations of the needle, comprising:
- memory means having a plurality of randomly addressable storage locations;
- means for generating a clock signal asynchronous relative the timing of said machine;
- address means responsive to applied pulse of said clock signal for sequentially selecting said storage locations;
- means for applying the clock signal to the address means and for removing the signal from the address means subsequent to application of a plurality of pulses less than the total number of said storage locations for selecting a plurality of storage locations during a timing cycle of the machine;
- means for sequentially reading information from the plurality of selected storage locations and for generating signals responsive to the read information during the timing cycle;
- and
- means responsive to said signals for forming a stitch pattern in a work piece.
4 more elements
An automatic sewing machine, comprising:
- a work holder for retaining a work piece;
- a sewing needle;
- memory means having a plurality of randomly addressable storage locations;
- means for forming a first signal at a first time during a cycle of the machine;
- address means responsive to the first signal for selecting said storage locations;
- means for reading information from said storage locations and for generating signals responsive to the read information;
- means for generating a timing pulse at a second preselected time in a cycle of the machine after reading said storage locations;
- and
- means responsive to said signals and pulse for simultaneously moving the work holder relative the needle along different coordinate directions to perform a sewing operation.
6 more elements
An automatic sewing machine, comprising:
- a work holder for retaining a work piece;
- a sewing needle;
- memory means having a plurality of randomly addressable storage locations;
- means for sequentially reading information from said storage locations and for generating signals responsive to the read information;
- means for generating a timing pulse at a preselected time in a cycle of the machine, said generating means including means for forming a first pulse at a first time in the machine cycle, means for forming a second pulse at a different second time in the machine cycle, and means for selecting said first and second pulses from the pulse generating means for formation of said timing pulse at different times in the machine cycle;
- and
- means responsive to said signals and pulse for simultaneously moving the work holder relative the needle along different coordinate directions to perform a sewing operation.
4 more elements
An automatic sewing machine, comprising:
- a sewing needle;
- memory means having a plurality of randomly addressable storage locations;
- means for generating a clock signal asynchronous relative timing of the sewing machine;
- address means for selecting a plurality of different storage locations responsive to pulses in said clock signal during a timing cycle of the machine between successive reciprocations of of the needle;
- means responsive to pulses in said clock signal for reading and decoding information in the selected storage locations, said decoding means being initiated by said pulses between selection of subsequent addresses by the address means during the timing cycle;
- and
- means responsive to the reading and decoding means for performing a sewing operation on a work piece.
4 more elements
An automatic sewing machine, comprising:
- a sewing needle;
- means for retaining a work piece during sewing;
- memory means having a plurality of randomly addressable storage locations;
- means for reading said storage locations and generating signals representing information in the storage locations;
- means responsive to said signals for driving the retaining means relative the needle;
- means for determining the temperature associated with said driving means and for forming an out of temperature signal;
- and
- means responsive to said out of temperature signal for deenergizing the driving means to prevent damage to the driving means resulting from an out of temperature condition, and for interrupting operation of the retaining means at a selected time after receipt of the out of temperature signal.
5 more elements
An automatic sewing machine, comprising:
- a sewing needle;
- a work holder for holding a work piece during sewing;
- driving means for moving the work holder relative the needle;
- memory means having a plurality of randomly addressable storage locations;
- address means for selecting said storage locations during a timing cycle of the machine between successive reciprocations of the needle;
- means for generating a clock signal for forming a pulse train at a first frequency for sequencing said address means;
- and
- means responsive to said clock signal for forming a second pulse train at a second lower frequency for energizing the driving means.
5 more elements
An automatic sewing machine, comprising:
- a sewing needle;
- a work holder for retaining a work piece during sewing;
- driving means for moving the work holder relative the needle;
- means for generating a clock signal asynchronous relative the timing of the sewing machine;
- means responsive to the clock signal for forming a first pulse train at a first frequency for energizing the driving means;
- means responsive to the clock signal for forming a second pulse train at a second lower frequency for energizing the driving means;
- and
- means for selectively connecting one of said first and second pulse trains to the driving means.
5 more elements
An automatic sewing machine, comprising:
- a sewing needle;
- means for reciprocating the sewing needle;
- a work holder for retaining a work piece during sewing;
- means for driving the work holder relative the needle;
- memory means having a plurality of randomly addressable storage locations, said storage locations being capable of including data words commanding movement of the work holder without reciprocation of the needle;
- address means for electrically selecting said data words;
- electrical means for reading the data words and for forming signals representing the selected data words;
- and
- electrical means responsive to said signals representing selected command data words for controlling the reciprocating means and preventing reciprocation of the needle.
6 more elements
Dependencies are inferred from the claim text.