US3675231A — Automatic device for making drawings

Claim 1

Independent Claim 334 words

An automatic device for making drawings by using digital codes of separate line, the codes describing the coordinates of the centers of said lines, the projection lengths on the coordinates, the coordinates of the beginning and end of an arc, the thickness, configuration of separate lines, such as, straight lines, ellipses, parabola, said automatic device comprising: a receiving register for storing the codes received; a first convertor of codes describing the horizontal coordinates of the line centers into d.c. electric signals proportionate to said codes, said first convertor being connected to said receiving register; a second convertor of codes describing the vertical coordinates of the line centers into d.c. electric signals proportionate to said codes, said second convertor being connected to said receiving register; a third convertor of codes describing the lengths of horizontal projections of the lines into a.c. electric signal proportionate to said codes, said third convertor being connected to said register; a fourth convertor of codes describing the lengths of vertical projections of lines into a.c. electric signals proportionate to said codes, said electric signals being sinusoidal, said fourth convertor being connected to said receiving register; a fifth convertor of a code describing the line configuration into signals whose frequency and phase shift are determined by the line configuration; said fifth code convertor being connected to one of said two convertors of codes describing the lengths of the line projections and to said receiving register; an a.c. voltage generator, connected to said fifth code convertor and to that of said two convertors of codes describing the lengths of the line projections not connected to said fifth code convertor, a first device for summing up the output signals of said first and third code convertors; a second device for summing up the output signals of said second and fourth code convertors; a twocoordinate recording instrument provided with systems deflecting the drawing element and with a device for recording density control, said recording instrument being connected to said first and second summing-up devices.

Claim 2

Dependent Claim 334 words

An automatic device for making drawings by using digital codes of separate line, the codes describing the coordinates of the centers of said lines, the projection lengths on the coordinates, the coordinates of the beginning and end of an arc, the thickness, configuration of separate lines, such as, straight lines, ellipses, parabola, said automatic device comprising: a receiving register for storing the codes received; a first convertor of codes describing the horizontal coordinates of the line centers into d.c. electric signals proportionate to said codes, said first convertor being connected to said receiving register; a second convertor of codes describing the vertical coordinates of the line centers into d.c. electric signals proportionate to said codes, said second convertor being connected to said receiving register; a third convertor of codes describing the lengths of horizontal projections of the lines into a.c. electric signal proportionate to said codes, said third convertor being connected to said register; a fourth convertor of codes describing the lengths of vertical projections of lines into a.c. electric signals proportionate to said codes, said electric signals being sinusoidal, said fourth convertor being connected to said receiving register; a fifth convertor of a code describing the line configuration into signals whose frequency and phase shift are determined by the line configuration; said fifth code convertor being connected to one of said two convertors of codes describing the lengths of the line projections and to said receiving register; an a.c. voltage generator, connected to said fifth code convertor and to that of said two convertors of codes describing the lengths of the line projections not connected to said fifth code convertor, a first device for summing up the output signals of said first and third code convertors; a second device for summing up the output signals of said second and fourth code convertors; a twocoordinate recording instrument provided with systems deflecting the drawing element and with a device for recording density control, said recording instrument being connected to said first and second summing-up devices.

Claim 3

Dependent Claim 56 words

An automatic device as claimed in claim 1, wherein said convertor of a code describing a line configuration being a phase shifter coupled to one of said convertors of a code describing the projection length through ''''AND'''' and ''''OR'''' circuits connected to a line configuration decoder, said a.c. voltage generator being connected to said phase shifter.

Claim 4

Dependent Claim 41 words

An automatic device as claimed in claim 2, wherein connected to said a.c. voltage generator being series-connected are means for frequency doubling and the second phase shifter, said second phase shifter being connected to said ''''OR'''' circuit through the ''''AND'''' circuit.

Claim 5

Dependent Claim 72 words

An automatic device as claimed in claim 1, wherein connected to the input of said two-coordinate recording instrument through an ''''AND'''' circuit is a line thickness and brightness automatic control unit, the inputs of said control unit being connected to said line configuration decoder and line thickness decoder, the line thickness decoder being connected to said receiving register, to which the codes describing the projection lengths and the line configuration are delivered.

Claim 6

Dependent Claim 163 words

An automatic device as claimed in claim 4, wherein said line thickness and brightness automatic control unit comprises additional convertors of codes describing horizontal and vertical projection lengths into a.c. electric signals, said additional code convertors being connected to said receiving register, and one of said additional code convertors being coupled to said a.c. generator through a first rectifier, the other of said additional code convertors being coupled to the same a.c. generator through series- connected phase shifter and second rectifier when tracing a straight line, said other additional code convertor being coupled to said a.c. generator through the first rectifier when tracing ellipses, said line thickness and brightness automatic control unit also including a summing-up amplifier whose input is connected to said additional code convertors and whose output is connected to three series-connected amplifiers, each of said amplifiers via ''''AND'''' circuits connected to said line thickness decoder, an ''''OR'''' circuit and a non-linear functional unit being coupled to said two-coordinate recording instrument.

Claim 7

Dependent Claim 20 words

An automatic device as claimed in claim 1, wherein said a.c. electric signal produced by said third converter is sinusoidal.

Claim 8

Dependent Claim 17 words

An automatic device as claimed in claim 1, wherein said a.c. voltage generator produces a sinusoidal signal.

Claim 9

Dependent Claim 46 words

An automatic device as claimed in claim 4, which comprises an arc tracing unit having input terminals connected with the output of said generator and said register, the output terminal being connected through said AND circuit and said flip-flop to the input of said recording instrument.

Annuity Stage	Window Opens	Payment Deadline	Surcharge Period Until	Estimated Fee	Status
3.5 Years (Year 4)	1975-07-04	1976-01-03	1976-07-04	$2000.00	Window Closed / Lapsed
7.5 Years (Year 8)	1979-07-04	1980-01-03	1980-07-04	$3760.00	Window Closed / Lapsed
11.5 Years (Year 12)	1983-07-04	1984-01-03	1984-07-04	$7700.00	Window Closed / Lapsed

Automatic device for making drawings

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