The Twin Scrubbing Brush: Two Heads on a Sprung Holder

"The invention relates to means whereby floors may be cleansed in a simple and effectual manner, and with as little labor as possible to the servant or person engaged in the cleaning operation." "D is a holder provided with end-concaved jaws d d, which fit over the neck b, and are held loosely pivoted thereto by a spring, E. Thus the two scrubbers are employed with great facility and at great advantage, while the operator actuates the whole by a suitable handle, F." "The mop-rag or other equivalent device is seized by the jaws d d and worked easily and efficiently. Thus the scrubber-holder D is adapted also as a mop-holder, and may be used successively for each purpose."

Screw two scrub brushes side by side to a strip of hardwood, leaving a gap in the middle. Screw a short dowel across the gap as the neck. On the end of a broom handle, fix two short hardwood jaws with rounded notches that close round the dowel. Hold them together with a spring from the assortment so they grip the dowel but let it swivel. Scrub a measured area of floor with soap and water, counting strokes. Then scrub the same area with one brush and count again. Clamp a rag in the jaws and mop it dry. Compare with the notebook.

**Micheal Biglin** of Marr, Luzerne County, Pennsylvania, assignor of one-half to M. F. Reap of Pleasant Valley, filed US 158,459 on 21 November 1874; it is dated 5 January 1875. **Honest limits.** The notebook treats the push as spread evenly over the bristles and ignores overlap between strokes. Floor size, brush size, stroke and push are examples. Your stroke count is the measurement.