Jandus Introduction 1903-Late 20s Gyro Fixtures

[Russ Huber]

Edited November 24, 2023 by Russ Huber

[Russ Huber]

Edited November 24, 2023 by Russ Huber

[Russ Huber]

I believe all above is credited to Jim Kovar.

[Steve Cunningham]

GE also had a Gyro in that era. It too was straight arms.

[Russ Huber]

6 hours ago, Russ Huber said:

I believe all above is credited to Jim Kovar.

 

[Russ Huber]

17 hours ago, Steve Cunningham said:

GE also had a Gyro in that era. It too was straight arms.

One decade later +. The GE twin Blower gyro is seen in 1915 electrical trade and catalogue. The AC SMY 3 wire head cord motors were coil started. The coil is located within the fixture No. 44 seen on the patent image.

Edited November 24, 2023 by Russ Huber

[Russ Huber]

1906-07 gyro fixture. 

Edited November 24, 2023 by Russ Huber

[Russ Huber]

1908 INTRODUCTION gyro fixture.

Edited November 24, 2023 by Russ Huber

[Russ Huber]

How do you spot a Jandus/AB Jandus gyro 1909 and forward fixture? All Jandus/AB-Jandus gyros 1909 and forward fixtures have AC or DC motors mounted in a ...........wire trunnion. 

[Russ Huber]

The only gyro I am aware of in electrical trade to compete with the Jandus gyro was the Essex Triad gyro introduced to the market in 1905. The Essex gyro concern flopped as in 1909 they bellied up with 3 years unpaid back taxes.

Edited November 24, 2023 by Russ Huber

[Russ Huber]

I found documented electrical trade proof when the bent arm Jandus gyro fixture was introduced. 1908.

[Russ Huber]

1903-05 gyro fixture.

[Russ Huber]

1906-07 gyro fixture. 

[Russ Huber]

1908 bent arm introduction gyro fixture.

Edited November 24, 2023 by Russ Huber

[Russ Huber]

1909+ gyros were bent arm fixtures with wire mount trunnions. This includes Jandus 1909-10 - AB/Jandus 1911-20- National Screw & Tack Co. 1921-22 - National Screw & Manufacturing Co. 1923-29(?).

[Steve Rockwell]

          I'll have to look up the year of this photo, if that's possible to do...

                                                                    Note that field studs

                                                                     

                                      appear to be placed at the 12-, 4- and 8-o'clock positions,

unlike BMYs, MMYs, SMYs and the GE Twin Blowers, which have them at 1:30, 4:30, 7:30 and 10:30...

                                                                         

 

 

                                                 And the blades?

[Russ Huber]

5 hours ago, Steve Rockwell said:

          I'll have to look up the year of this photo, if that's possible to do...

                                                                    

                                                                                                 And the blades?

Accurate dating on that gyro would be a good thing.  What about the blades? They are Jandus blades.

[Russ Huber]

On 12/11/2023 at 1:01 PM, Steve Rockwell said:

          I'll have to look up the year of this photo, if that's possible to do...

                                                                    Note that field studs

                                                                     

                                      appear to be placed at the 12-, 4- and 8-o'clock positions,

unlike BMYs, MMYs, SMYs and the GE Twin Blowers, which have them at 1:30, 4:30, 7:30 and 10:30...

                                                                         

 

 

                                                 And the blades?

Steve, I take it there is no date with the image? The acorns on the studs are a whole different animal than the GE acorns. To this day there is no evidence those motors were outsourced or manufactured under the Adams & Bagnall roof. GE ceased the manufacture of the centrifugal start BMY motors in 1911. This would have put pressure on the AB/Jandus concern to seek another source or manufacture the above odd looking self-starting motors for 11-12 season.

[Russ Huber]

Adams & Bagnall show know fractional motor manufacture until just prior to being absorbed by National Screw & Tack in 20.

[Steve Rockwell]

On 12/12/2023 at 8:18 PM, Russ Huber said:

I take it there is no date with the image?

                   

 

     I came up with 23 Jun 1914, whether date of image or of its cataloguing, yours to choose...

[Russ Huber]

3 hours ago, Steve Rockwell said:

                   

 

     I came up with 23 Jun 1914, whether date of image or of its cataloguing, yours to choose...

That is a good thing. Either/or it dates no later than 14, which supports AB/Jandus had to find a replacement for the GE BMY centrifugal start mechanism taken off the market in 11 for their AC gyros. Now, did AB/Jandus manufacture these odd self-starting fan motors, or did they outsource them? We may never know.