In the mid-1930s Remington "upgraded" their existing successful rifles, like the 8, 12, 14, and 24, to make them more attractive to potential buyers. They added a "1" to the model designation number to differentiate them.
Giving the 14 a lionger barrel and physically larger wood turned it into the 141. I have owned a few 14s and 141s and agree that the 141s are a little longer and a little heavier than the 14s, but the 141 stock fits me better and it doesn't take a rocket scientist to trim that 24" barrel back to just forward of the magazine tube and reinstall the front sight. John Wooters had a 141 reconfigured in that way. Interesting that Winchester made fewer lever action rifles and more carbines, while Remington went the opposite way with the 14 to 141 configuration chamge. It seems to me that a 141 carbine in 30/32/35 REM would have been more attractive to woods hunters, but Remington has had more than a few marketing/design failures during the past 100 years.
