40
the one sliding along the other, with a screw andnut by which the height and level of the sole can
1 I'ig 36.
h - .J--..-
FI
H
A
liiml"
position wdiere it rests against an iron bar, the chainis slacked out, and the slide, K, descends and closesthe mouth of the bath. The sheet of glass slidingfrom the inclined sole is received on a grating inthe bath lying at the same inclination. This gratingrests on two side bars, l 2 , l 2 , which are pivoted ato 1 to the side frames, l, ?, fixed on a rocking shaft,o ; the upper edge of the side frames, Z, rise a littleabove the face of the grating to serve as side guidesfor the glass sheet, and their lower ends are tiedacross by a piece of bent plate in which is placed aroll of wire gauze, l 1 , as an elastic bufferto receive the glass when it slides down.
The upper part of the grating forabout one-fourth of its length has lozengeor diamond openings separated by barssharp on their upper edges, and for therest of its length it consists of thin barsfixed at one end to the points of thediamonds, and at the other end to a crossbar joining the two side bars, P, l 2 , andprojecting a little beyond them at eachside, so as to rest on the side frames, Z, Z.A grating of the kind described gives theliquid of the bath access to all parts ofthe glass. When it has been immersedfor the required time the grating, L, iscanted back to its level attitude by means
be accurately adjusted. The lower part of thefurnace, h, in which the rocking shaft is mounted,is open in front and is covered in by a plate throughwhich are slotted holes for the arms, and these holesare covered by sliding plates through which thearms pass. Thus the flame is prevented fromextending down to h, and also leakage of cold airfrom h into the furnace is avoided. The sole, E,being by partly turning the rooking shaft broughtto a level with the table, c,the workman by means ofa rake introduced througha side hole, d 2 , draws thesheet of glass on to the sole,and then by means of anexternal lever, i, fixed onthe shaft, e, cants the soletowards the mouth of thebath, J, as shown in Fig. 33.
This movement of the sole islimited by an adjustable stop, Z, on a quadrant alongwhich the lever, I, is moved. To prevent flame fromentering the bath, J, from the furnace, the mouth,e 1 , is closed by a vertical slide, k, suspended by achain which passes over guide pulleys, k, k 1 , and isattached to the lower arm of the lever, I. Whenthis lever is moved to cant the sole, E, into themouth, E 1 , the chain being at the same time pulledraises the slide, K, to allow for the passage of thesole. When the sole is canted back to its horizontal
other sliding through guides on o 2 , and terminat-
Fig. 37.
ing in a claw, which resting on a toothed segment,p 1 , holds the lever in any desired position. Ongrasping the handle at the top of the lever (whichhandle is made in halves, the one half fixed to o 2 andthe other to o 3 ) the claw of o 3 is released from theteeth of the segment, and the lever can be moved.Adjustable stops, p, are provided to limit the throwof the lever. The shaft, o, is at one end pivoted inthe one side of the bath, and it passes through theother side, having a cone fitting a conical seat, which