Itcport on the Trials of Implements at Wolverhampton. 507 
Ixiing withdrawn, the bar, released, moves to its normal position, throwing tho 
belt upon the loose pulley F. At the same time another action takes ])lace. 
The sliding of the bar II in either direction moves a short lever, 11, which, by 
means of a small double-acting slot-cam, opens and again closes the valve 
of a little cylinder, S, which has a jjiston acted iipon by steam, or rather 
■condensed water, admitted from the engine-boiler by tlie pipe T. The motion 
•of the piston actuates a lever, U, which causes the two brake-blocks V V to bo 
pressed tightly against the peripherics of the two driving-riggers C and I). 
Hence, when either of tlie rope-drums is being driven, a simple releasing of 
the catch K causes the bar H to throw tho belt on to the loose rigger F, and 
instantaneously brings both rope-drums to a standstill by the operation of the 
steam-brake upon the riggers 0 and D. The method of working is to lay out 
the ropes on the roundabout plan, and to lay two cords across the field, one to 
each anchor-man ; so that, upon the implement arriving at the anchor, the 
cord is pulled, and being connected (see W) with the catch-lever K, tho 
motion is instantly stopped. This gives the same advantage of avoiding 
signals, &c., as wc found in the double-engine or travelling-windlass systems. 
The windlass is started for the next journey by the engine-driver moving 
the lever J. The breaking or slight retardation of the paying-out drum is 
effected by blocks, M and 2M, pressed by springs, QQ, against the drum-flanges. 
Each spring is connected with the bar H by a short piece of chain, P ; so that 
when the bar is shifted to the left, bringing the belt upon the rigger C, and 
■driving the rope-drum A, the chain P takes the pressure of the spring off tho 
block M. A similar action at the other end of the windlass relieves the block 
N when the drimi is winding up rope. This ingenious invention enables the 
implement to be turned in the shortest possible time ; and, as the engine 
keeps always running, there is no delay whatever by pulling iip and again 
starting. The frame of the windlass is constructed of plate-iron on the truss 
principle, and it is mounted upon four wheels. Mr. Hayes employs two self- 
sliifting anchors, worked as represented in plan in Fig. 18. The pulley is 
Fig. 18. — Diagram illustrating the mode of icorlcing of Mr. Edward 
Hayes's Self-shifting Anchor. 
placed upon a frame resting upon four cutting-discs ; and the anchor is moved 
torward by the strain of the puUing-rope which passes along the headland 
m the direction of the arrow. To regulate the distance advanced, a couple of 
claw-anchors are shifted forward by hand alternatelv; the anchor heino- held 
back by the chains C and D in turn, each tio;ht chain being released at the 
proper moment by knocking loose the « dog-link " A and B. Another method 
exhibited, but not m working order, consisted in fitting the anchor with a 
small worm-wheel and barrel, slowly workins; spike-wheels and chains on the 
principle of the Weston pulley-blocks,— wheels of three different sizes bein<r 
provided for three different rates of advance. Mr, Hayes docs not attach 
'2 L 2 
