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路人甲
路人甲
  • 注册日期2012-03-19
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work, until the instant the

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更多 发布于:2012-03-19 16:55
  
<p>work, until the instant the</p>But if the snail is in any other position than that wherein its indentation nearest the centre is contiguous to the pin on the rack tail, the tail pin on the rack will fall upon the edge of the snail before the rack has fallen back to the pin ?, and all the teeth will not pass the hawk's bill, but only so many as there are indentations or steps from the remote angular point of the snail, to the step on which the tail pin rests; in the present position in the plate the tail pin is resting on the sixth step of the <a href="http://www.northfaceoutlet-store.org/"><strong>North Face Coupon</strong></a> snail, which denotes that six strokes will be given by the hammer, or <a href="http://www.northfaceoutlet-store.org/"><strong>North Face Jackets Sale</strong></a> that six teeth of the rack are to be <a href="http://www.northfaceoutlet-store.org/"><strong>North Face</strong></a> gathered up by as <a href="http://www.northfaceoutlet-store.org/"><strong>Discount North Face</strong></a> many revolutions of the hawk's bill; but it may be perceived that pnly five teeth remain <a href="http://www.northfaceoutlet-store.org/"><strong>The North Face Outlet</strong></a> to be gathered up by the rack; hence <a href="http://www.northfaceoutlet-store.org/"><strong>North Face Outlet</strong></a> we know that the clock is in <a href="http://www.northfaceoutlet-store.org/"><strong>North Face Jackets Clearance</strong></a> the act of striking, and has struck one out of the six. The pin in the hour wheel has <a href="http://www.northfaceoutlet-store.org/"><strong>North Face Outlet Store</strong></a> just raised the warning piece and permitted it to go again; the clock will therefore continue to strike till the <a href="http://www.northfaceoutlet-store.org/"><strong>North Face Jackets On Sale</strong></a> upper end of the gathering pallet falls on the projected pin p of the rack, which will be as soon as the last tooth of the rack is drawn up to the hawk's bill, in which situation the wheel c cannot revolve any further till another hour has elapsed.When another hour has passed, the pin on the hour wheel will again elevate the warning piece I, the bent end of which will be raised out of the way of the pin of the wheel c, and the fly will run on a revolution or two with a whirling noise, i. e. the clock will give warning; but the end g of the hawk's bill has not been raised far enough by the end j of the warning piece to permit the catch i to clear the teeth of the rack, therefore the rack cannot yet fall back; presently, the hawk's bill is raised high enough by the continuation of the motion of the pin of the report wheel m and the rack falls back, till its tail pin rests on the seventh step of the snail, which has arrived during the interval of the hour contiguous to the pin on the rack tail, and there are in consequence seven teeth of the rack past the catch i, and therefore the hour seven will be struck before the tail of the gathering pallet falls again on the pin p of the rack and stops the striking; when at the same time the bent of the warning piece catches the pin of the wheel c and stops the motion of the fly.It will thus be seen that the number of hours struck by the hammer will be regulated by the position of the snail, which revolving once in twelve hours, <a href="http://www.northfaceoutlet-store.org/"><strong>Cheap North Face Jackets</strong></a> and being divided into twelve steps or indentations, each subtending an equal angle from the centre, a new step will be presented to the pin of the rack tail at the end of each hour, and an additional blow given by the hammer. ItMauufac- will also be seen that, as the snail or regulator of the tutes. <a href="http://www.northfaceoutlet-store.org/"><strong>North Face Clearance</strong></a> number of strokes is not attached lo the <a href="http://www.northfaceoutlet-store.org/"><strong>North Face Jackets Cheap</strong></a> striking movev""ment as in the count-wheel machinery, the striking may be repeated <a href="http://www.northfaceoutlet-store.org/"><strong>North Face Outlet Online</strong></a> any number of times during the interval of an hour, or the passing of one step of the snail, and will indicate each time the same number of hours, so that the snail <a href="http://www.northfaceoutlet-store.org/"><strong>North Face Store</strong></a> being placed in such a position with respect to the rack tail that a fresh step is presented to the pin the instant before the pin on the wheel elevates the warning piece, the passing hour will always be <a href="http://www.northfaceoutlet-store.org/"><strong>The North Face Coupons</strong></a> struck any time the machinery is permitted to work, until the instant the new hour commences.This striking part may, therefore, be readily converted into repeating mechanism; and the drawing given in the plate, taken from a clock in which the additional parts necessary to efFect this are added, we have chosen in order to illustrale the principle upon which the repeating watches and clocks are constructed. A lever q q is situated in front of the plate, one end of which engages a pin on the warning piece, and the other extends beyond the case of the clock, and is provided with a line which is at all times accessible; the lever turns upon a <a href="http://www.northfaceoutlet-store.org/"><strong>Discount North Face Jackets</strong></a> pivot or stud at r, and is provided with a spring to return to its original position; it will thus be seen that, as often as the string is pulled, the catch will be raised clear of the rack, and the striking
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