Vintage 1952 Leiman Vacuum Pump General Electric Avionic Aircraft Altimeter Test

The pump was used with a vacuum chamber to calibrate aircraft altimiters and aircraft rate of climb indicators 

The data plate reads LEIMAN BROTHERS INC Newark NJ

 Manufactured Jan 1952 LEIMAN VACUUM PUMP 

Capacity 3.6 cfm 10” Hg Vac Model NO 26-1 1/2 

Driven by General Electric Motor 

Model 5KH43AB1205 1/4 HP Continuous Speed Rating 

1725 RPM 115 VAC 5.0 Amp 60 Cy, Single Phase

Leiman Bros - Oil Burner Pump

Leiman Bros. - 31 A & 31 B No. 1 Ingot Mold

Leiman Bros. No. 1 ingot mold.  It is used to convert scrap metal into flat stock.  The metal is melted in a crucible and poured into the mold. This mold can be size adjusted by moving the sides in a horizontal direction.   Some oxidation on the metal.  Unit is stamped 31-A and 31-B on different parts of the mold.

Leiman Bros. - Rotary Air Blower Assembly

Speed, 600. Size 28. 104 BS. Serial number 3M 1361. 

Filter assemblies on the inlet and outlet.

Leiman Bros. - Model K 5B Serial Number 11698DB

Leiman Bros. - Inlet and Outlet Filters 127-P

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Leiman Bros. - Jeweler's Work Bench

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