Glass door knob dating

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I’m almost always within five years of the correct year of construction.Often, I’m within two years, and occasionally I’m right on the money.If the door has a mortise lock (evidenced by a tall, skinny plate in the door edge and doorknobs fastened to a square shaft by setscrews), the house almost certainly predates 1925, although such locks were still used in basement rooms and garages for another decade or two.On the other hand, doors with just a small rectangular latch plate in the door edge invariably mean the house postdates 1920 — the year when Walter Schlage invented the easier-to-install cylindrical lockset that quickly drove the mortise lock off the market. Mortise locksets with ornate metal or glass knobs suggest late 19th-century construction dates, while those with plain white, brown or black glass knobs are more typical of early 20th-century houses.It relies on a simple and rather prosaic yardstick found in every house: its doors.Unless the place has gone through one of those ghastly home-improvement-emporium "renovations" — in which case the owners would not bother to call me in the first place — the doors are usually original to the house, offering a clear indication of when the place was built.

Find out more in our Cookies & Similar Technologies Policy.Cylindrical locksets with knobs resembling giant glass jewels easily peg a home’s construction date between 19. Ornate hinges with spiky ornamental pins typify Victorian-era houses.Hinges with plain leaves and ball-tipped pins hark from the Craftsman era, but remained popular through the Depression. You can change your preferences any time in your Privacy Settings.We do this with social media, marketing, and analytics partners (who may have their own information they’ve collected).

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