The street-sweeping machines were introduced into London about five years ago, after having been previously used, under the management of a company, in Manchester, the inventor and maker being Mr. Whitworth, of that place. The novelty and ingenuity of the apparatus soon attracted public attention, and for the first week or two the vehicular street-sweeper was accompanied in its progress by a crowd of admiring and inquisitive pedestrians, so easily attracted together in the metropolis. In the first instance the machines were driven through the streets merely to display their mode and power of work, and the drivers and attendants not unfrequently came into contact with the regular scavagers, when a brisk interchange of street wit took place, the populace often enough encouraging both sides. At present the street-sweeping machine proceeds on its line of operation as little noticed, except by visitors, and foreigners especially, as any other vehicle. The body of the sweeping machine, although the sizes may not all be uniform, is about 5 feet in length, and 2 feet 8 inches or 3 feet in width; the height is about 5 feet 6 inches or 6 feet, and the form that of a covered cart, with a rounded top. The sides of the exterior are of cast iron, the top being of wood. At the hinder part of the cart is fixed the sweeping-machine itself, covered by sloping boards which descend from the top of the cart, projecting slightly behind the vehicle to the ground; under the sloping boards is an endless chain of brushes as wide as the cart, 16 in number, placed at equal distances, and so arranged, that when made to revolve, each brush in turn passes over the ground, sweeping the mud along with it to the bottom sloping board, and so carrying it up to the interior of the cart. The chain of brushes is set in motion, over the surface of the pavement, by the agency of three cog wheels of cast iron; these are worked by the rotation of the wheels of the cart, the cogs acting upon the spindles to which the brooms are attached. The spindles, brushes, and the sloped boards can be raised or lowered by the winding of an instrument called the broom winder; or the whole can be locked. The brooms are raised when any acclivity is to be swept, and lowered at a declivity. The vehicle must be water-tight, in order to contain the slop.

When full the machine holds about half a cart load or half a ton of dirt; this is emptied by letting down the back in the manner of a trap door. If the contents be solid, they have to be forked out; if more sloppy, they are “shot” out, as from a cart, the interior generally being roughly scraped to complete the emptying.

The districts which have as yet been cleansed by the machines are what may be considered a government domain, being the public thoroughfares under the control of the Commissioners of the Woods and Forests, running from Westminster Abbey to the Regent-circus in Piccadilly, and including Spring-gardens, Carlton-gardens, and a portion of the West Strand, where they were first employed in London; they have been used also in parts of the City; and are at present employed by the parish of St. Martin-in-the-Fields. The company by whom the mechanical street-sweeping business is carried on employ 12 machines, 4 water carts, 19 horses, and 24 men. They have also the use, but not the sole use, of two wharfs and barges at Whitefriars and Millbank. The machines altogether collect about 30 cart-loads of street-dirt a day, which is equivalent to four or five barge-loads in a week, if all were boated. Two barges per week are usually sent to Rochester, the others up the river to Fulham, &c. The average price is 5l. 10s. to 6l. per barge load, but when the freight has been chiefly dung, as much as 8l. has been paid for it by a farmer.

The street-sweeping machine seems to have commanded the approbation of the General Board of Health, although the Board’s expression of approval is not without qualification. “Even that efficient and economical implement,” says one of the Reports, “the street-sweeping machine, leaves much filth between the interstices of the stones and some on the surface.” One might have imagined, however, that an efficient and economical implement would not have left this “much filth” in its course; but the Board, I presume, spoke comparatively.

The reason of the circumscribed adoption of the machine—I say it with some reluctance, but from concurrent testimony—appears to be that it does not sweep sufficiently clean. It sweeps the surface, but only the surface; not cleansing what the scavagers call the “nicks” and “holes,” and the Board of Health the “interstices,” in the pavement.

One man is obliged to go along with each machine, to sweep the ridge of dirt invariably left at the edge of the track of the vehicle into the line of the next machine, so that it may be “licked up.” In fine weather this work is often light enough. It is also the occupation of the accompanying scavager to sweep the dirt from the sloping edges of the public ways into the direct course of the machine, for the brushes are of no service along such slopes; he must also sweep out the contents of any hole or hollow there may be in the streets, as is frequently the case when the pavement has been disturbed in the relaying or repairing of the gas or water pipes. But for this arrangement, I was told, the brushes would pass “clean over” such places, or only disturb without clearing away the dirt. Indeed irregularities of any kind in the pavement are great obstructions to the efficiency of the street-sweeping machine.

There are some places, moreover, wholly unsweepable by the machine; in many parts of St. Martin’s parish, for instance, there are localities where the machine cannot be introduced; such are—St. Martin’s-court; the flagged ways about the National Gallery; and the approach, alongside the church, to the Lowther Arcade; the pavement surrounding the fountains which adorn the “noblest site in Europe;” and a variety of alleys, passages, yards, and minor streets, which must be cleansed by manual labour.

In fair weather, again, water carts are indispensable before machine sweeping, for if the ground be merely dry and dusty, the set of brooms will not “bite.”

We now come to estimate the relative values of the mechanical and manual labour applied to the scavaging of the streets. The average progress of the street-sweeping machine, in the execution of the scavagers’ work, is about two miles an hour. It must not be supposed, however, that two streets each a mile in length, could be swept in one hour; for to do this the vehicle would have to travel up and down those streets as many times as the streets are wider than the machine. The machines, sometimes two, sometimes three or four, follow alongside each other’s tracks in sweeping a street, so as to leave no part unswept. Thus, supposing a street half a mile long and nine yards wide, and that each machine swept a breadth of a yard, then three such machines, driven once up, and once again down, and once more up such a street, would cleanse it in three quarters of an hour. To do this by manual labour in the same or nearly the same time, would require the exertions of five men. Each machine has been computed to have mechanical power equal to the industry of five street-sweepers; and such, from the above computation, would appear to be the fact. I do not include the drivers in this enumeration, as of course the horse in the scavagers’ cart, and in the machine require alike the care of a man, and there is to each vehicle (whether mechanical or not) one hand (besides the carman) to sweep after the ordinary work. Hence every two men with the machine do the work of seven men by hand.

Having, then, ascertained the relative values of the two forces employed in cleansing the streets, let me now proceed to set forth what is “the economy of labour” resulting from the use of the sweeping machine. In the following table are given the number of men at present engaged by the machine company in the cleansing of those districts where the machine is in operation, as well as the annual amount of wages paid to the machine labourers; these facts are then collocated with the number of manual labourers that would be required to do the same work under the ordinary contract system (assuming every two labourers with the machine to do the work of seven labourers by hand), as well as the amount of wages that would be paid to such manual labourers; and finally, the number of men and amount of wages under the one system of street-cleansing is subtracted from the other, in order to arrive at the number of street-sweepers at present displaced by machine labour, and the annual loss in wages to the men so displaced; or, to speak economically, the last column represents the amount by which the Wage Fund of the street-sweepers is diminished by the employment of the machine.