If it is a newer model it should be right in front of the trigger guard.
Winchester but I'm not sure exactly what model. The Winchester has a cocking lever built into the trigger guard. His rifle had a modified cocking lever that was larger and allowed fast cocking.
Your rifle may be a Winchester Model 490. If so, it should have a button type safety on the side of the trigger guard to the front of the guard. This pushes through from right to left to release the safety. Please contact Winchester through their website for an owner's manual for your rifle.
Do not attempt this. Have it done by a gunmsith.
No. Trigger guards for these were made of plastic.
Winchester made the model 1873 rifle and the model 1876 rifle,but did not make a model 1875 rifle.
See the Crosman link below.
I am not aware of one on today's market.I have never heard of one for this model of rifle.
gunpartscorp website.
The rifle was produced from 1904 to 1923, originally known as the Winchester Thumb Trigger Model. In 1920, the rifle was renamed to become the Winchester Model 99, and it stayed that way until 1923 when the rifle was discontinued. Value is heavily dependent on condition, but should exceed $1,000. You will need a hands-on appraisal for a better answer.
A Winchester Model 70 is a rifle.
There were a few that do not have a standard trigger, but use a THUMB trigger. Do a web IMAGE search for Winchester thumb trigger rifle, and you will find it.