Your workout is horrible. That may be a result of a lack of equipment but it is still horrible. You need to work your legs and back as well. This will a) stop you having chicken legs (if you say 'nah my legs are big enough already' so help me god) b) help the rest of you grow as it will stimulate more hormones
There is no real limit to muscle hypertrophy, at least not one you are going to reach without YEARS if not a decade or more of dedicating yourself to the goal of gaining as much size as possible
Your current workout, the frequency at which you do it, and probably your diet even though you haven't mentioned it, are what will be holding you back.
Your workout needs to incorporate major muscle groups (legs/back/chest) and revolve around compound movements (movements that involve more than one joint). Around the compounds you can place isolation movements (those that involve one joint) as you see fit. Limited equipment will obviously limit your options, either get to a gym or ghetto some stuff up, it isn't that difficult if you're creative. 9-12 reps have been shown to result in greatest muscle hypertrophy (not necessarily strength), however you need to keep increasing the weight for it to continue working, at the very LEAST. Generally you will benefit from changing rep range when you plateau, as well as using different movements.
Frequency: Your muscle needs time to regenerate and build themselves back up stronger than they were before you damaged all the fibres. 24 hours or less (what you currently do) is not enough time for this. You will simply break them down again before they are rebuilt. If you've been doing your current routine for any significant period of time (more than a few months) then that pretty much signals that the weights you are using are for girly men because if they weren't you would be in a state of overtraining. 2-3 days before hitting a muscle group again is pretty standard, but if your muscles haven't recovered by then obviously wait till they do.
Diet: Without enough protein + calories, you will not grow. Period. You have to eat more than you burn to grow, it is that simple.
Also, DOMS (muscle soreness) isn't a very good indicator of a workouts effectiveness. In omie's case it is probably related to the fact he only works out once a week, in yours I would say it is because you keep hitting the same muscles before they are fresh again. Personally after a week or two of introducing a new movement, my body has adapted and DOMS is all but gone.