Cutoff saw
First Claim
1. Apparatus for converting pulses representing movement in one unit of measurement to pulses representing another unit of measurement, includingmeans for generating pulses representing both distance and direction of movement,clock means for supplying clock pulses at a rate higher than the pulse rate of said pulse generating means,first and second adjustable counter means,means responsive to said first counter for supplying a predetermined number of clock pulses to said second counter for each pulse supplied by said pulse generating means, andgate means responsive to the pulse output of said pulse generating means for directing said predetermined number of pulses to cause said second counter to count either up or down, depending on the direction of movement of said pulse generating means,said second counter providing one of two outputs, depending upon the direction of movement of said pulse generating means, whenever the number of pulses supplied thereto obtains a predetermined value,whereby the output from said second counter means is determined by the pulses supplied from said pulse generating means as modified between ratio of the predetermined number preset into the first and second counter means.
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Accused Products
Abstract
Logs which are to be divided into standard length blocks are first measured and their total length is displayed visually on an electronic readout device. Based on this length measurement, an operator selects one of several standard lengths and causes the log to advance relative to a cutoff saw where it is then cut. Total length measurement is determined by presetting a counter with a count representing maximum possible log length, down counting the counter when the trailing edge is detected and stopping the count when the leading edge reaches a reference position. Movement of the log is obtained from a tachometer generator mounted to rotate with a conveyor drive and an electronic circuit converts the output of the tachometer generator into pulses each representing a predetermined and convenient unit of length measurement.
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Citations
2 Claims
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1. Apparatus for converting pulses representing movement in one unit of measurement to pulses representing another unit of measurement, including
means for generating pulses representing both distance and direction of movement, clock means for supplying clock pulses at a rate higher than the pulse rate of said pulse generating means, first and second adjustable counter means, means responsive to said first counter for supplying a predetermined number of clock pulses to said second counter for each pulse supplied by said pulse generating means, and gate means responsive to the pulse output of said pulse generating means for directing said predetermined number of pulses to cause said second counter to count either up or down, depending on the direction of movement of said pulse generating means, said second counter providing one of two outputs, depending upon the direction of movement of said pulse generating means, whenever the number of pulses supplied thereto obtains a predetermined value, whereby the output from said second counter means is determined by the pulses supplied from said pulse generating means as modified between ratio of the predetermined number preset into the first and second counter means.
Specification
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- Resources
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Current AssigneeAcrowood Corp.
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Original AssigneeThe Black Clawson Company
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InventorsBowker, John F.
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Primary Examiner(s)Thesz, Jr., Joseph M.
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Application NumberUS05/245,297Time in Patent Office1,357 DaysField of Search235/92 FL, 235/92 WT, 235/92 PS, 235/92 DM, 235/92 DNUS Class Current377/24CPC Class CodesB27B 1/002 by cross-cutting saw benche...G06M 3/02 for performing an operation...
