The varnish to fix the webs is applied, not on the surface T as is usual, but on a bevel for the purpose,' the position of the webs depending on their tension to keep them in their furrows.
Casing, having a collar to fit water-tight on the bevel shoulder, is inserted.
This ring is provided with a clamping screw, which, through the intervention of bevel-gear and rods, is operated by means of the hand-wheel 78.
With similar bevel-gear and rods the tangent screw is connected to the hand-wheel, 79, by which the observer communicates the fourth or slowest motion in position angle.
This system presents the greatest advantages in point of economy of driving power, especially where the gradients are variable, but is expensive in first cost, and is not well suited for curves, and branch roads cannot be worked continuously, as a fresh set of pulleys worked by bevel gearing is required for each branch.
The wheel D, keyed to the shaft overcoming the resistance to be measured, is driven from wheel N by two bevel wheels L, L, carried in a loose pulley K.
BEVEL (from an O.
The mechanic's instrument known as a bevel consists of a rule with two arms so jointed as to be adjustable to any angle.
In heraldry, a bevel is an angular break in a line.
As an architectural term "bevel" is a sloped or canted edge given to a sill or horizontal course of stone, but is more frequently applied to the canted edges worked round the projecting bands of masonry which for decorative purposes are employed on the quoins of walls or windows and in some cases, with vertical joints, cover the whole wall.
In diameter, and has a speed of fifty revolutions per minute, and the power generated is transmitted through bevel-gearing to a horizontal shaft from which the power is taken FIG.
The Power Was Transmitted To The Paddles By Bevel Wheels F, G, Rotating A Spindle Passing Through A Stuffing Box In The Bottom Of The Calorimeter.
If q be any variable co-ordinate defining the position or (in the case of a system of bodies) the configuration, the velocity of each particle at any instant will be proportional to 4, and the total kinetic energy may be expressed in the form 1/8A42, where A is in general a function of q The special case where both cones are right circular and a is constant is important ~n astronomy and also in mechanism (theory of bevel wheels).
Conical or Bevel and Disk WheelsFrom Principles III.
Constant; the line of contact is constant in position, and the rolling surfaces of the wheels are regular circular cones (when they are called bevel wheels); or one of a pair of wheels may have a flat disk for its rolling surface, as W2 in fig.
Sliding Cont?,zct (lateral): Skew-Bevel Wheels.An hyperboloid of revolution is a surface resembling a sheaf or a dice box, generated by the rotation of a straight iAn line round an axis from which it is at a constant distance, - c and to which it is inclined at -~- a constant angle.
Ing, and are called skew-bevel wheels.
In skew-bevel wheels the properties of a line of connection are not possessed by every line traversing the line of contact, but only by every line traversing the line of contact at right angles.
One of those consists in forming the rim of each wheel into a series of alternate ridges and grooves parallel to the plane of rotation; it is applicable to cylindrical and bevel wheels, but not to skew-bevel wheels.
The pitch-circles of a pair of circular toothed wheels are sections of their pitch-surfaces, made for spur-wheels (that is, for wheels whose axes are parallel) by a plane at right angles to the axes, and for bevel wheels by a sphere described about the common apex.
For a pair of skew-bevel wheels the pitch-circles are a pair of contiguous rectangular sections of the pitch-surfaces.
Teeth of Bevel- Wheels.The acting surfaces of the teeth of bevel-wheels are of the conical kind, generated by the motion of a line passing through the common apex of the pitch-cones, while its extremity is carried round the outlines of the cross section of the teeth made by a sphere described about that apex.
The operations of describing the exact figures of the teeth of bevelwheels, whether by involutes or by rolling curves, are in every respect analogous to those for describing the figures of the teeth of spur-wheels, except that in the case of bevel-wheels all those operations are to be performed on the surface of a sphere described about the apex instead of on a plane, substituting poles for centres, and o B2
Teeth of Skew-Bevel Wheels.The crests of the teeth of a skew-bevel wheel are parallel to the generating straight line of the hyperboloidal pitch-surface; and the transverse sections of the teeth at a given pitch-circle are similar to those of the teeth of a bevelwheel whose pitch surface is a cone touching the hyperboloidal surface at the given circle.