. American engineer and railroad journal . constant . 4 the stroke, stop quickly, and then accelerate so fast on the return stroke that it is at full speed before it has moved more than 3 ori ins. Not only this, but if one of the motor commutator barsis marl*ed, it will be seen to stop at exactly the same placeat each stroke. The device does not require a special typeof motor, and it can be arranged to provide a number of differ-ent cutting speeds, with a constant speed for the return advantages of such a drive are that the belts, pulleysand shifting mechanism can be done away with,
. American engineer and railroad journal . constant . 4 the stroke, stop quickly, and then accelerate so fast on the return stroke that it is at full speed before it has moved more than 3 ori ins. Not only this, but if one of the motor commutator barsis marl*ed, it will be seen to stop at exactly the same placeat each stroke. The device does not require a special typeof motor, and it can be arranged to provide a number of differ-ent cutting speeds, with a constant speed for the return advantages of such a drive are that the belts, pulleysand shifting mechanism can be done away with, thus greatlysimplifying the drive; the speed of the platen on the cuttingstroke, which is ordinarily limited, because of the belts canbe increased, and the advantages of the high-speed tool steeiscan be more fully realized. The Electric Controller & SupplyCompany, of Cleveland, have had this drive running success-fully for some time on a 3C-in. and a 96-in. planer at the worksof Wellman-Seaver-Morgan Company in Cleveland, and also on. APPLICATION OF M0T0B DRIVE TO —!TBOIXEB & SUPPLY COMPANY. a 36-in. Pond planer, which was exhibited at the St. LouisExposition. The photograph shows the arrangement of the electricalapparatus. The motion of the motor is reversed by means ofa magnetically operated controller, carried on the switch-board shown just beyond the motor. The operation of thiscontroller is such that a platen will reverse and acceleratejust as rapidly as is consistent with the power of the maximum current which can flow to the motor Is abso-lutely limited, so that there is no sparking or undue mechan-ical straining at tbe In I On future installa-tions this controller will loser to the planer bed,where It will be out of the way of passing workmen. In addi-tion to the magnetic switch controller, the equipment consistsof a reversln of the planer, ami adjustable dogs onplaten or by a lever. This lever Is the only apparatus Isary to start or stop th
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectrailroadengineering
