Hello tinplate world
Fred Bauer produced Gravity Railway in the 1920's ....acquiring several patents 1921,1922 , 1923,&1924 ...offering two sizes for different retail price points $3.00 & $6.00. The design and construction changed over the years by 1929 two models were offered with a smaller foot print .... as the set up Gravity Railway does occupy a fair bit of real -estate .
Here is a link to Tin Plate times face book page to see a video of the Railway in action ....
The construction of the railway would not have taken many set ups and take downs ..and moving without delicate care ....perhaps the reason why they have not survived in huge numbers .
Bauer for this and a few of the other surviving examples ( but not all) uses Ives clock work track ..(stamped Ives)...each section of track and vertical support of numbered to assist the building is hopes that it would operate once completed ......the lager model was sold with two cars ... the smaller model ( only 2 levels and apposed to 3 on the larger) was sold with only one car .
Has anyone out there ever seen the later models with the smaller foot print as advertised in 1929 ?
This example has Ives track ...and the track clips found in the 1924 patent .