Pallet

“ The locking planes when locked are inclined 12° from EB, and FB. In the case of the engaging pallet it inclines toward the center A. The draw is produced on account of MA being longer than RA, consequently, when power is applied to the scape tooth S, the pallet is drawn into the wheel. The disengaging pallet inclines in the same direction but away from the center A; the reason is obvious from the former explanation. Some people imagine that the greater the incline on the locking edge of the escape teeth, the stronger the draw would be. ”

“ Keeping this action of the verge escapement in mind we can easily understand its application, as made by De Vick, in Fig. 26, where I have marked the same pallets A B. A tooth is just escaping from pallet B and then one on the other side of the wheel will fall on pallet A. Foliot, verge and pallets form one solid piece which is suspended by a cord, so as to enable it to swing with little friction. For the purpose of making the motions very plain I have left out the dial and framework from the drawing. ”

“ Gradually the darkness melted into a sort of sombre twilight, which by imperceptible degrees grew stronger, and presently I saw that I was in a hut the sole furniture of which consisted of a pallet, raised about a foot from the floor, and covered with rich karosses or skin rugs—one, I observed, being made entirely of leopard-skins. On one end of this pallet was seated a man of perhaps forty years of age, wearing a keshla, or head ring, and a mucha, or apron, made apparently of monkey skins. ”

“ It is always those who do not thoroughly understand a subject who are the first to make such claims. We will, however, give our opinion within certain limits. The angle to be divided for tooth and pallet is 101⁄2°. Let us divide it by 2, which would be the most natural thing to do, and examine the problem. We will have 51⁄4° each for width of tooth and pallet. We must have a smaller lifting angle on the tooth than on the pallet, but the wider the tooth the greater should its lifting angle be. ”

“ It is self-evident that a narrow pallet requires a wide tooth, and a wide pallet a narrow or thin tooth wheel; in the ratchet wheel we have a metal point passing over a jeweled plane. The friction is at its minimum, because there is less adhesion than with the club tooth, but we must emphasize the fact that we require a greater angle in proportion on the pallets in this escapement than with the narrow pallets and wider tooth. This seems to be a point which many do not thoroughly comprehend, and we would advise a close study of Fig. ”

“ The right-hand pallet forms no essential part of the escapement, but is simply a safety pallet, designed to catch the wheel in case of accident to the locking-stone during the time that the left-hand pallet is beyond the range of the wheel. The escape wheel carrying the seconds hand thus moves once only in each complete or double vibration of the pendulum, or every two seconds. ”

“ P P are the pallets working on a pin at S as in the dead-beat clock escapement; the pallets carry a lever L which can vibrate between two pins B B. R is a disc carried on the same axis with the balance, and it carries a pin I, which as the disc goes round in the direction of the arrow, falls into the fork of the lever, and moves it on and withdraws the pallet from the tooth D, which at once moves onwards and gives the lever an impulse as it passes the face of the pallet. ”

“ Suppose we put in a new escape wheel and find we have on the entrance pallet too much drop, that is, the tooth which engaged this pallet made a decided movement forward before the tooth which engaged the exit pallet encountered the locking face of said pallet. If we thoroughly understand the lever escapement we can see in an instant if putting in a thicker pallet stone for entrance pallet will remedy the defect. Here again we can study the effects of a change in our large model better than in an escapement no larger than is in an ordinary watch. ”

“ It will be seen that those workmen who make a practice of opening the banks, “to give the escapement more freedom” simply jump from the frying pan into the fire. The bankings should be as far removed from the pallet center as possible, as the further away they are pitched the less run we require, according to angular measurement. Figure 6 illustrates this fact; the tooth S has just dropped on the engaging pallet, but the fork has not yet reached the bankings. ”

“ By having a lifting angle on pallet and tooth of 81⁄2°, a locking angle of 11⁄2°, and a run of 1⁄2°, we will have an angular movement of the fork of 81⁄2 + 11⁄2 + 1⁄2 = 101⁄2°.
Writers generally only consider the movement of the fork from drop to drop on the pallets, but we will be thoroughly practical in the matter. With a total motion of the fork of 101⁄2° (JAW, Fig. 15) , one-half, or 51⁄4° will be performed on each side of the line of centers. We are at liberty to choose any impulse angle which we may prefer; 3 to 1 is a good proportion for an ordinary well-made watch. ”

“ The draw is to be 12° on each pallet, while the locking faces of the teeth are to incline 24°. The acting length of fork is to be equal to the distance of centers of scape wheel and pallets; the impulse angle is to be 28°; freedom from dart and safety, roller is to be 11⁄4°, and for dart and corner of crescent 5°; freedom for ruby pin and acting edge of fork is to be 11⁄4°; width of slot is to be 1⁄2 the total motion, or 101⁄4 ÷ 2 = 51⁄8°; shake of ruby pin in slot = 1⁄4°, leaving 51⁄8 − 1⁄4 = 47⁄8° for width of ruby pin. ”

“ All workmen who have had an extended experience in repair work are well aware that there are some lever escapements in which the pallets absolutely require oil; others will seem to get along very nicely without. This applies also to American brass club-tooth escapements; hence, we have so much contention about oiling pallets. The writer does not claim to know positively that the pallet stones are at fault because some escapements need oiling, but the fact must admit of explanation some way, and is this not at least a rational solution? ”

“ In our drawing the arc spoken of coincides with the dart radius g g. As before pointed out, we gave particulars when treating on Fig. 25, therefore considered it unnecessary to further complicate the draft by the addition of all the constructional lines. We specified that the freedom between ruby pin and end of horn was to be 11⁄2°; these lines (which we do not show) are drawn from the pallet center. ”

“ As the pendulum moves on in the same direction, the tooth slides farther up the pallet, thus producing a recoil, as in the crown-wheel escapement. The acting faces of the pallets should be convex. For when they are flat, and of course still more when they are concave, the points of the teeth always wear a hole in the pallets at the extremity of their usual swing, and the motion is obviously easier and therefore better when the pallets are made convex ”

“ The position of the lever with reference to the pallets is immaterial in principle, and is only a question of convenience in the arrangement; but it is generally such as we have given it. The principle is the same as in the dead-beat clock escapement, with the advantage that there is no friction on the dead faces of the pallets beyond what is necessary for locking. ”

“ As we explained early in this treatise, there is no imperative necessity compelling us to have the pallets and fork move through ten degrees any more than nine and one-half degrees, except that experience has proven that ten degrees is about the right thing for good results. In this day, when such a large percentage of lever escapements have exposed pallets, we can very readily manipulate the pallets to match the fork and roller action. ”

“ Usually the workman can manipulate the pallets to match the escape wheel so that the teeth will have the proper lock and drop at the right instant, and again have the correct lock on the next succeeding pallet. ”

“ It is a style that has been much used of late years, and is executed in the same way and with the same tools as for gilding, but without any gold applied on the places thus ornamented. The rolls, pallets, and smaller tools, are applied by the hand, and the large plates with the press, with the same precautions as indicated in the previous section. If the pattern consists of straight lines, and the workman possesses a good eye, the best manner of executing it is by making use of a pallet, placing it firmly on the book, and sliding it to the opposite point. ”

“ The usual explanations of paltock (“Paltok. Baltheus,” Prompt. Parv.; “a short garment of the doublet kind,” Strutt’s Dress and Habits, &c. ii. 352) do not seem to suit the present passage. In Palsgrave’s Lesclar. de la Lang. Fr., 1530. fol. lii. (Table of Subst.) we find “Paltocke a patche palleteau;” and see what immediately follows in this poem: Thow, i. e. Though: chek mate; see note, p. 96. v. 29.
Compare The Flyting of Dunbar and Kennedy (see note, p. 177. v. 4) ”

“ Patelloida differs from Patella in the construction of the animal; Siphonaria, in the lateral siphon; and Ancylus, in the oblique twist of the axis, as well as in the nature of the animal. The Patellæ are marine. Fig. 229, P. Oculus.
PATELLIFORM. (Patella, a dish; forma, shape.) Shaped like a dish, or like shells of the genus Patella.
PATELLOIDA. Quoy and Gaimard. Lottia, Gray.—Fam. Phyllidiana, Lam.—Descr. Patelliform, rather flat; apex obtuse, leaning towards the posterior margin; muscular impression not symmetrical, but widest on the right side near the head of the animal ”

“ Now, I have here a table, a piece of stick, and a pail, and the proposition is, how can that pail be hung to the edge of this table? It is to be done; and can you at all anticipate what arrangement I shall make to enable me to succeed ? Why, this. I take a stick, and put it in the pail between the bottom and the horizontal piece of wood, and thus give it a stiff handle—and there it is; and what is more, the more water I put into the pail the better it will hang. It is very true that before I quite succeeded I had the misfortune to push the bottoms of several pails out ”

“ Each pelt is spread out smoothly on a table with the wool down and the inner or flesh side up. A mixture of lime and sulphide of sodium is next applied uniformly over the skin with a brush. The pelt is then folded up and placed in a pile with others. The solution that was applied penetrates the skin and loosens the wool, which, at the end of twenty-four hours, more or less, can be easily pulled off with the hands or rubbed off with a dull instrument or stick. The workman must be careful not to get any of the solution on to the wool, as it dissolves it and makes it worthless. ”

“ A common three-plait is an expeditious mode by which three strips of sheeting, or other fabric, may be converted into a rope. Four strand round plait is formed by making each pair of strands cross each other from right to left alternately, until the whole length required is completed; this form of plait is useful for whip thongs, and will run through the sheeve hole of a block. A single strand cord or twine may be twisted from loose fibre, by bending a winch handle in one end of a thick iron wire, and a hook in the other. ”

“ There was I creeping along with my syringe full charged, and the pail in my other hand—held well out, because of my gown—and he, poor soul, sauntering along in the shadows of the nut-walk, thinking nothing less than that some one was advancing with his pink doom. When he was a couple of yards off I fired a volley—slap in his face—and turned to run. He swore—but I forgive him that. My pail caught in a bough, and went over his feet, for he jumped towards the noise; he is not a coward. ”

“ Chuckling, Poppy pulled me back out of sight.
“Quick, Jerry!—to the kitchen.”
[188] “What for?”
“To find a pail.”
“What kind of a pail?”
“Any kind,” came the giggle, “just so long as it holds water. And the more water the better.”
“Hot dog!” says I, seeing fun ahead. “Are you going to give young fatty a shower bath?”
“Nothing else but.”
In a jiffy we had a pail. Not a skinny one, either, but a sort of robust, full-grown pail. Just fatty’s size. And filling it with cold water, we hoisted it up the stairs, for it was the leader’s scheme to do the “showering” act through an upper window. ”

“ Palette, pal′et, n. a little oval board on which a painter mixes his colours: the special arrangement of colours for any particular picture: a plate against which a person presses his breast to give force to a drill worked by the hand: a small plate covering a joint in armour.—n. Pal′ette-knife, a thin round-pointed knife for mixing colours on the grinding slab. ”

“ The word pallium has been applied to a number of garments in the past, many of which were of a flowing character, and some writers have seen in the archbishop’s pall a small vestige of what was once an ample vestment. Early pictures, however, show the pall looped round the shoulders with one end hanging in front of the body and one behind. Mr. Macalister says that it was difficult sometimes to distinguish between it and the stole, and that the next step in its evolution was to knot the free ends to the loops as shown in the eighth, ninth, and tenth centuries. ”

“ What she does, however, is to bring the pellet up from below the table, take another of the sitter’s pellets on the table into her hand, and place the pellet which she has brought up from below the table between the slates, keeping in her hand the pellet just taken from the top of the table. The final step is to place a rubber band round both slates, in doing which she turns both slates over together. She professes to get the writing without the use of any chalk or pencil. ”