Aero-Metal Products 46-A Schematic

Aero-Metal Products 46-A

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Product Information:
Manufacturer:Aero-Metal Products

Schematics Content

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MODEL 46 - A

General Specifications
MOTOR VOLTAGE - 115 Volts 60 - cycles A.C. DO NOT USE D.C.)
Fourteen (14) 10 " records
Twelve (12) 12 " records

Twelve only 12 " or fourteen 10 " records may be played, DO NOT INTERMIX 12 " and 10'records.
DO NOT CHANGE CAP playing position unless Changer is out of cycle.
DO NOT USE FORCE at any time to either start or stop the Changer mechanism.
DO NOT LEAVE RECORDS ON SUPPORTS when Changer is not in use as this will cause the records to warp and hinder the efficiency of the Changer.
For more enjoyable listening and operating performance, always keep records in albums.
The last record in the stack will keep repeating until the Changer is stopped.
DO NOT OPERATE the Changer on D.C. Current.
Make certain that the center post slide cap is down before loading.

If a record does not have the eccentric inside groove, it will be necessary to use the REJECT PUSH BUTTON to play the next record.
With normal use, the needle should not require replacement. DO NOT DROP the needle or damage its precision point. DO NOT REMOVE and then replace the same needle. Make certain that the needle is securely held in cartridge case.

The plastic cap can be moved either forward or backward, from the 10 - inch to 12 - inch position, or from the 12 - inch to the 10 - inch position.
The records are placed over the center post, resting on the ledge in the center and on the cap ledge on the out side edge.
Snap pressure clamp down on top record stack. To place Changer in either 10 " or 12 " playing position, use the following procedures:
For 10 " playing position, lift up the cap at an angle and push the cap forward until the maximum forward motion is reached, then release cap to allow it to fall into place. The Changer is now ready to play 10 " records. For 12 " playing position, lift up the cap at an angle and pull backwards until the maximum backward position is reached, then release cap to allow it to fall into place. The Changer is now ready to play 12 " records. NOTE: The 10 " cap position is always in the maximum FORWARD position, and the 12 " cap position is always in the maximum BACKWARD position.

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Press down on the push button marked " ON. " After the turntable has attained speed, press down on the push button marked " REJ. " Hold finger pres sure for a few seconds and then release.
The bottom record will fall on the turntable and the Changer will automatically play through the entire stack of records.
REJECTING Press down on the push button marked " REJ. " Hold finger pressure for a few seconds and release. A record may be rejected at any time during playing by this simple operation.

Press down on the push button marked " OFF. " Set the tone arm on the tone arm rest post. Set the record pressure clamp in an upright position. The played records may now be easily removed by lifting the entire stack of records upward and in a horizontal plane.
Records are placed on offset portion of center post. Tone arm plays through the first record and follows on to the eccentric groove. When needle feeds into a position of 11 inches away from center post, the trip which is attached to tone arm link (16) engages and moves pawl lever (23). Clutch arm which is attached to pinion, gear is now released thus engaging turntable clutch. Changing mechanism is now powered.

2 - Lift lever roller (73) travels over lift lever (17) raising tone arm off record.

3 - End of elongated slot in main slide (21) engages stud (58) on tone arm link (16). The backward motion causes the tone arm to swing clear, allowing record to drop.

4 Push-off stud (68) on slide plate (10) engages push-oft arm (10) which in turn retards record cap (89). Record drops from upper shelf to lower shelf. At this point the slide reverses its motion.

5 - Stud (68) on slide plate (10) reverses its motion thereby causing record cap to advance. This action pushes the record forward, allowing it to drop off spindle shelf.

6- Spring on return slide (113) engages stud (58) on tone arm link (16). It then moves forward until the siud engages position stop (8) in either 10 " or 12 " position.

7 - Tone arm is now in set down position and is allowed to rest on record when lift lever roller (73) is disengaged from lift lever (17).

8 Tone arm is now resting on record and re mains locked for the next half turn

9 - Roller (70) on bottom of large gear (18) pushes position stop (8) until it is clear of stud (58) on tone arm link (16).

10 - Pawl lever (23) engages clutch arm thus cut ting off power for changing mechanism. Changer will now proceed through playing cycle.


When record cap (89) is in 12 " position the push oft lever (9) is in the forward hole. The 12 " -10 " lever (11) is free. When record cap (89) is in 10 " position the push-off lever (9) is in the rear hole and the 12 ". 10 " lever (11) is pushed forward. This in turn pulls

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TODEL 16-1

The position stop (8) into the 10" position through the action of the connecting link (16).
OPERATION OF REJECT LEVER When reject button (82) is pushed down it moves reject arm (32) through the action of connecting link (100). The reject arm (32) engages tab on bottom of pawl lever ((23) thereby engaging the clutch.

(Vertical) Tighten screw (77) clockwise to raise tone arm. Counter-clockwise to lower.
(Horizontal) Operate mechanism by hand, through change cycle, until tone arm rests on turntable. For slight adjustment turn screw in hole in rear of tone arm clockwise for outward adjustment, counter-clockwise for inward adjustment. For greater adjustment turn hexagon head screw. Place in proper position for set down and tighten screw.

Be sure center post (45) has not been bent. It should be at right angles to turntable before proceeding with adjustment. To adjust, loosen three screws holding base (87) to base plate (11). Place 10 % record on center, post (45) so that it rests on shoulder of record cap (89). Be sure the hole in record is directly on top of center post (45). With edge of record resting on top shelf, move base (87), back or forward until edge of record has 1/32 " clearance from back edge of top step. When proper adjustment is made tighten screws in base (87), being certain position is not changed.


1- Normal position of large gear, while in play ing cycle should be with roller (60) centered in slot at end of slide plate (21). In this position the gear will snap into the index position. (As shown in Figure 1), and clutch will be disengaged.

2 The small pinion gear is indexed correctly when the turntable shaft and clutch assembly is rotated in a counter clockwise direction, with clutch engaged. The end of the clutch arm will be in line with the edge of the trip lever as shown in Figure 5.

3 - If pinion gear has been removed from changer proceed as follows. Place large gear in index posi tion. Insert pinion gear with brass rivet opposite trip lever as shown in Figure 6. Clutch arm will be resting on trip lever. If properly timed you will be able to spin turntable and clutch assembly freely. If motion is not free remove assembly and rotate. pinion gear one tooth (clockwise direction),

4 - For a finer adjustment bend end of trip lever forward or backward. Clutch arm should have smallest clearance possible between turntable and clutch assembly.

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Model 46-A

1 - Be sure tone arm shaft has .005 to .010 end play.
2 Be certain trip lever is properly adjusted on tone arm link (16). Move trip lever forward or backward and tighten locking screws.
3 - See that there is no excess play in tone arm linkage. Also be sure needle is fastened securely in cartridge and cartridge is fastened securely to tone arm. If tone am sets down in 12 " position regardless of cap setting, shorten 10 " -12 " link (105) by bending.
If tone arm has erratic motion when setting down check to determine if tone arm bracket is free from index washer (33) and that it returns to normal position without end play. If this condition exists free bracket from tone arm lever (34). USE FINE OIL and adjust spring to take out side play.

Remove turntable by removing three screws on top. Revolve turntable hub and clutch by hand. If binding occurs look for bent patts or heavy burts. U burrs are found remove them with a smooth file. Be certain stud (58) has 1/32 " to 1/16 " clearance from push-off arm (10). 4. If it does not have this clearance bend backward to obtain correct dimension. Be sure the four rollers (64) are free.

Use fine oil sparingly on rollers and other moving parts. Use light cup grease on bottom of turn table thrust bearing. Remove excess grease from large gear (on cam side).
DO NOT UNDER ANY CIRCUMSTANCES OIL MOTOR. Keep turntable, and idler wheels free from oil. If oil should get on any of these parts be sure to remove it.
The turntable bearing and center shaft hub are self-lubricating and therefore require no oil.

Grounded side of pick up cartridge is terminal nearest the tone arm. A.C. connections (85) will fit Allen - 502 or EBY - 624 plug or equivalent.