US2215381A - Control device for indexing and phototranscription machines - Google Patents

Description

Sept. 17, 1940.

L. G. TowNsEND CONTROL DEVICE FOR INDEXING AND PHOTOTRANSCRIPTION MACHINES Filed Aug. -l0, 1939 HTTOIP/YFY Patented Sept. 17, 1940 c vmitral) STATES CONTROL DEVICE FOR INDEXING PHOTOTRANSCRIPTION MACHINES Leonardr G. Townsend, Washington, D C. Application-August 10, 1939, Serial No. V289,462

2 Claims.

(Granted underthe act of March 31883, as l amended April 30, 1928; 370 G. 757) i The invention described herein may be Amanufactured and used by or for the Government of the United States for governmental purposes l without the payment to me of any royalty thereon, in accordance with the provisions of the act of April 30, 1928 (ch. 460, 45 Stat. L. 467).

This invention relates to a control device for indexing and phototranscription machines.

An object of the invention is to improve on certain elements and means disclosed in my United States Patent #2,121,061 of June 21, 1938, in that I now provide a more simple and positive means for accurately stopping the record bearer or carrier at the registering station upon the breaking of an electrical circuit established by the operation and cooperation of the various parts described in the above mentioned patent.

A further object is to provide a reliable means for assuring that the operation of the machine may be resumed after the stoppage of the record carrier at the registering station and thereafter continued until such time as an appropriate circuit is again established to eifect stoppage.

A still further object is to provide means whereby the starting of the machine in its neXt cycle may be conveniently effected by either manual or automatic control.

The single figure of the drawing is, for the most part, a reproduction of Figure 10 of Patent 2,121,061, and reference characters corresponding with those used upon the drawing of the l patent are employed here in so far as is necessary to describe the parts of the instant structure that more immediately and directly cooperate with the parts of the patented structure.

This patent discloses a method of and apparatus for the indexing and phototranscription of records, and has for its object the provision of a machine for 'supplementing and extending the known art relating to the compilation, maintenance, and tabulation of records. In this art there has been developed a method of producing records microphotographically upon a lm, and my patent referred to, among other things, discloses means for'feeding the film to a registering station and stopping it for accurate registery at said station, for purposes stated in the patent, the stopping means including the shaft 62| rotating continuously during the operation of the machine y until such time as it is desired to stop the film at the registery station. This shaft in the patent is shown as carrying the lm feeding drum and also a disk 401 having stops 401 thereon to be engaged by a projection carried by a rod reciprocated continuously by a cam carried by the disk, there being a notch in the rod to be engaged by a latch 402 carried by the armature of a niagnet 400 to arrest the movement of the rod with its projection in the path of movement of a stop 401 on the disk, to stop the film at the registery station, the energization and deenergization of the magnet being controlled by a mechanism controlling various circuits.

In the present construction, I simplify the film stopping means by eliminating the-reciprocating rod and the cam of the patent and produce an arrangement wherein the latch of themagnet 400 directly engages a stop on thefdisk 401, and provide an additional magnet for assuring that the operationof the machine may be resumed after the stoppage of the record carrier at the registery station until it is again'stopped by `establishing an appropriate circuit.

The gure is a circuit diagram of the machine of the patent above referred to, having associated therewith the improved control features forming part of the driving mechanism to effect the stoppage of the machine at the desired point or registering station, for viewing,'project ing, photographing, and for other purposes. f

Referring to the drawing, 62| designates Ithe driving shaft ofthe machine, whichlshaft'carries a feed .driving drum 6|0, which' shaft and y drum may'correspond in all respectstoithe. sim-f.

ilarly marked parts of the above mentioned pat1.

ent. On this shaft is keyed the locking disk 401 provided at quarter intervals with a shouldered stop 401 normally out of the path of movement of a projection or latch r402 mounted on an armature 898. The armature is apertured for the passage of three similar rods 4, 5 and 6, upon which the armature can freely move. The rods are rmly secured to a suitable magnet base of insulating material or material from which they may be insulated. Between the armature and base are magnets 3 and 400 exerting, when energized, `a pull on the armature against the tension of spiral springs 40| whose normal tendency is to keep the latch 402 projected into the path of movement of the stops on disk 401 when the magnets are deenergized. The magnets withdraw said armature and latch from latchng position when either or both magnets are energized.

In operation, with a machine running at high speed, current is supplied to the motor (M) from main supply wire H0, motor terminal |l1,

through motor and terminal |16, to lead ||5A Current` contacts |58 and 59, which are closed, rthrough lead |62, through magnet 400 and back to supply wire |5I. Magnet 400 is thus energized, attracting armature 898, causing the latch 492 carried thereby to be held out of the path of movement of a stop on disk 401; consequently, the disk is free to rotate, which it is continuously doing until such time as it is desired to stop a record at the registering station. y

After a selection has been made and the record, a lmin the present instance, has been run forward a predetermined distance or amount and then reversed and run backin the mannery and by the means described in Patent-#2,121,061, the dwell I23a of cam |23 allows roller |35 carried by pivoted armature 31 to drop.- This movement `Y of the armature opens the contacts |58 and |59 which breaks the circuit through magnet 400, deenergizing said magnet and'allowing the springs 40! to project the armature 898 to position wherein thelatch 402.will be engaged by a stop 497', thus stopping the machine at the proper time and place. After stopping the record at the registering station, and after this operation has served its purpose, whatever that may be within the possibilities of the contrivance, and when it is desired to again start the machine, this `can be done either automatically or manually-automatically by closing contacts 2% and 228 by cam 221, and manually -by the closing of switch 225. In either event the result is the resetting of the magnets 232, 242 and magnet 3, all of which are included in the reset circuit. Upon the energization of magnet 3, the armature 898 is attracted against the tension of springs @lll and its latch 492 is Withdrawnvfrom the stop 401 of disk 407, allowing said disk to rotate.

C'oincidental with the operation of the reset circuit just described, armatures lla and lla were retracted by the magnets and I9! through the resetting of the keyboard circuit eX- plained in the patent hereinbefore mentioned. With retraction of armature Illa, contacts H2 and l I3 were again closed; consequently starting the motor in clockwise direction at high speed.

" Iclaim:

1. In a machine of the character described, means for arresting the movement of a traveling record carrier at a definite point, including a normally continuously rotating shaft, record feeding means actuated by said shaft, a member rotated by said shaft and provided with stops, two magnets, an armature common to both and provided with a latch for directly engaging a stop on said member to arrest the movement of said member, means for constantly urging the armature and consequently its latch toward the stop member, a different electrical circuit for eacli magnet through which said magnets are energized to hold the armature and its latch out of the path of movement of the stops and deenergized to make operative the means for urging the armature toward the stops to move the latch into the path ofY movement of the stops, one of said magnets operating to attract the armature to a disengaged position while the stop member is rotating and the other magnet operating to disengage the stopengaging means from the stop when said stop member is stationary, thereby assuring the resumption of operation o f the machine after stoppage of .the recordVV carrier at a denite point.

' 2, Ina machine of the character described, means for arresting the movement of a traveling record carrier at a denite point, including a normally continuously rotating shaft, record feeding ing means actuated by said shaft, a member rotated by said shaft and provided with stops, two magnets, an armature common to both and provided with a latch for directly engaging a stop on said member to arrest the movement of said member, means for constantly urging the armature and consequently its latch toward the stop member, a different electrical circuit for each magnet through which said magnets are energized to hold the armature and its latch out of the path of movement of the stops and deenergized tok make operative the means for urging the armature toward the stops to move the latch into the path of movement of the stops, one of said magnetsv operating to attract the armature to a disengaged position while the stop member is rotating and the other magnet operating to disengage the stop-engaging means from the stop when said stop member is stationary, thereby assuring the resumption of operation of the machine after stoppage of the record carrier at a definite point, means for automatically actuating the circuits, and means for manually actuating said circuits.

LEONARD Gr. TOWNSEND.

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