Vintage Dobbie McInnes, Dampfmaschine Druckanzeigegerät Messgerät, Nr. 1, nautisch

EUR 263,26 Sofort-Kaufen oder Preisvorschlag, EUR 35,55 Versand, eBay-Käuferschutz
Verkäufer: andrew_frost7r3b ✉️ (1.927) 100%, Artikelstandort: Matlock, GB, Versand nach: GB und viele andere Länder, Artikelnummer: 204429623646 Vintage Dobbie McInnes, Dampfmaschine Druckanzeigegerät Messgerät, Nr. 1, nautisch. About 1902 the firm acquiredM. Walker and Son ,T. S. McInnes and Co. Ltd. ,D. McGregor and Co. Ltd. andGebbie and Co. Used properly, they can identify problems ranging from bad valve settings to constricted steam pipes.

Antique / Vintage Dobbie McInnes - Glasgow / London, Steam / Diesel Engine Pressure Indicator Gauge, with associated accessories.  


Very rare industrial collectable !


Model No 1


Original fitted mahogany case, with lock, no key


8 / 153 / E


2 / 20” / V+30 / C


8 / M / C


12” / G / V+12 / W


Metal & bakelite


As used to tune and calibrate railway locomotives, ships and other static steam / diesel engines.


Dated around 1920 - 30s


The engine indicator is a fascinating instrument that records how the pressures in the cylinders of steam and internal-combustion engines change during the operating cycle. Used properly, they can identify problems ranging from bad valve settings to constricted steam pipes. One of the major catalysts in development was the increasing realisation that the steam engine, useful tool though it had proved to be, was inefficient. Many reasons have been advanced to account for this process, but it is probable that — once the Watt-type engine began to replace the old Newcomen 'atmospheric' designs — it could be seen that too much coal was being consumed in relation to output. The first attempts to register pressure generated in the cylinders of steam engines were undertaken with columns of mercury, the levels being judged by the displacement of the metal in small-bore tubes.


Relevant information regarding such equipment, is available via the following weblink https://www.archivingindustry.com/Indicator/partone-mono.pdf


https://www.archivingindustry.com/Indicator/background-2014.html


Potentially complete and in working order, but untested. Additional test springs could be acquired by the purchaser.


Good condition for age, with some superficial marks, wear, scratches and tarnishing.


I have other Steam / Diesel Engine Pressure Indicators available, which are available to purchase  separately. 


Case 29cm x 21cm x 17cm approx


Dobbie McInnes -  Founded by Alexander Dobbie  in 1841, the firm changed its name to Alexander Dobbie & Son  after the death of the founder 1881. About 1902 the firm acquired M. Walker and Son , T. S. McInnes and Co. Ltd. , D. McGregor and Co. Ltd.  and Gebbie and Co.  They then changed the firm's name to Dobbie-McInnes, Ltd.


Manufacturers and patentees of nautical and engineering instruments. Specialities: "McInnes-Dobbie" patent engine indicators, pressure and explosion recorders and all accessories for indicating purposes; improved Bo Gurdon pressure, vacuum and hydraulic gauges; revolution counters, furnace deformation indicators and high-class engine and boiler fittings; Dobbie's patent compass and sounding machine, ships' clocks, aneroids, binoculars, telescopes and general navigational instruments; also official chart agents. 





 

  • Primary Material: metal
  • Country/Region: United Kingdom
  • Military Branch: British Merchant Navy
  • Object Type: Steam Engine Pressure Indicator Gauge
  • Original/Reproduction: Antique Original
  • Maker: Dobbie McInnes

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