That the device has a plastic handle dates it most likely to sometime after about 1940 or so. There was some use of "celluloids" much earlier, but those would most likely have deteriorated by now to the point of falling off or being unidentifiable.

Since "celluloids" have a distinctive "stink" if you poke them with a red-hot needle in an inconspicuous place, the handle could be tested, and finding that the handle was indeed celluloid/cellulose rather than what most would call "plastic" might date the device a decade or two older.

The expected period of the device is about the time when furniture pretty much ceased being assembled with full tenon joints, and the use of round wooden dowels became quite common. Unfortunately round dowels provide inferior holding ability and would frequently loosen, creating the notorious "rickety chair" phenomenon.

For repair, the joint was often just stuffed full of splinters to jam it back together, but for a proper repair the joint needed to be pulled apart, the old glue scraped off from the dowel and picked out of the socket, so that the joint could be properly re-glued.

The angled bend is to permit reaching around adjacent parts to clean up the dowel without completely disassembling the furniture, and the larger "arcs" allow scraping of the dowel sizes commonly used in light tables and chairs. A true crafstman probably would have disassembled all the joints and perhaps would have used a similar tool without the bend but more likely would have used a full-circle "dowel shaver," so this device was obviously for "homeowners" who were handy.

The smaller arcs obviously were intended to make the device more "generally useful" (as a sales gimmick) but would have been described as being useful fo cleaning swizzle sticks and toothpicks for re-use. (Householders of the era tended to be very frugal, unlike today; and this attribute was especially a characteristic of those prone to buying weird gadgets from the early TV commercials.)

This latter additional use/feature likely would suggest a half-decade more recent production since "house parties" involving fondue pots were not particularly popular (in my recollection) until somewhat nearer the end of WWII and in the decade or so after - ca. 1947+.

John