which may be fixed an ornamental piece of brass, to hide the crank if required. E, a balance screwed into the crank, to answer instead of a check spring; these being of different weights, you can choose one nearly the weight of the handle or pull, fixed to the crank, so as just to check it, so that every pull-crank supports itself, and the bell has only to take back the wire and corner cranks that may intervene between the pull-crank and bell.

Fig. 4, a crank the same as Fig. 3, only it is driven into the wall by a pike. A, a pike.

Fig. 5, a mortise crank, that goes into the wall. A, a balance the same as Fig. 3.

Fig. 6, a lever that screws upon the wall, and pulls down by the handle A. A, handle that is balanced to stand always as represented in the drawing.

Fig. 7, a lever for fixing on the surbase, and to pull from below, and balancing itself the same as Fig. 6.

Fig. 8, a crank with one arm and slip-pull, that gives the slip before the arm is pulled to the check; the bell going back with a sudden jirk makes it give a full and uniform ring at all times, so that a child pulling down to the check must ring it as well as the bell-hanger. A, the crank arm. B, slip-pull with a jointed head. C, jointed head, that after pulling gives way to the crank arm, and falls to its present position by means of a balance. D, a balance, which must be heavy enough to take back all the wire and cranks connected with this bell, the bell only needing a balance heavy enough to make a full ring. E, wire to next crank. F, wire to the bell, and about eighteen inches long.

Fig. 9, a bell and carriage to strike but once. A, pike rivetted into the carriage, and driven into the wall. B, carriage, six inches long. C, crank arm, turning on a

pin, with a screwed nut, so that you may turn it to either side the carriage. D, hammer to strike the bell with, screwed or rivetted into the crank arm. E, a pin to check the hammer from lying upon the bell. F, bell the same as a clock bell.

Fig. 10, a crank with one arm, and slip-pull the same as Fig. 8, and must connect with Fig. 9.

Fig. 11, a roller blind to work by a balance. A, a curtain or blind rolled round a white iron barrel. B, a brass or white iron pulley. C,, a piece of tape, painted to keep it straight when rolling round the pulley. D, a piece of brass or iron rod, with a swivel fixed to the tape, to answer as a balance to the weight of the cloth to make it stand at any height wanted. This may come down by the battin, or carried behind the window-shutter, so as not to be seen when the window-shutter is put back, taking care to put it up or down by the rod without touching the tape.

A balance

may

in the same manner be applied to Venetian blinds, window-curtains, map-rollers, &c. &c. &c. In witness whereof, &c.

OBSERVATIONS BY THE PATENTEE.

During thirty years constant practice, I have endeavoured to improve the art of bell-hanging to the utmost of my power. I was never pleased with the common mode of making the machinery perform by virtue of a spring or springs; the power of which being so un

This figure does not appear in the drawings attached to the record.

certain

certain as to the strength to be applied to every situation or weight of work to be done; their liability to break, and losing their power after being some time in use, urged me to contrive something more simple and less liable to go wrong. After considerable study and expenseI think I have attained the end (as far as possible, on a new principle, which will be the means of introducing that fine or easy motion in the bell-hanging art so much wanted) by substituting a balance or lever instead of springs, the powers of which are described in the specification of the drawings of the apparatus; by which it will appear that the bell-hanger has it in his power, to a very great nicety, to give just the proper power to whatever work may be required to be done, and that power not liable to go wrong, or fail.

The simplicity of the principle, when properly executed, cannot fail to make the work perform with the greatest possible ease. I think it proper to mention that the drawings in the specification were taken from the bells which were first set in motion, merely to show to the trade the principle and power of the balance. I am aware that the apparatus will be found in practice capable of improvement; for instance, in Fig. 3, E is a balance, screwed into the crank, to answer instead of a check spring; this may be made the ornamental piece of brass to hide the crank, as mentioned in D, and answer

both purposes.

In Fig. 8, should it be desired to have more pulls than one upon the same bell, one slip-crank, fixed about twenty inches from the bell, will answer the whole, and produce a strong uniform ring every time it is rung; but this slip-crank may be either adopted or not, at the pleasure of the gentleman or of the bell-hanger.