US947009A - Sash-bar for glass roofs. - Google Patents

Description

A. WINDBKNBCHT. SASH BAB POR GLASS BOOFS. APP'LIUATIOEr :FILED JULY 16, 1906.

Patented Jan.1s,191o.

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man Einpllre,' i 'eiding at the city'o'fl Berlin,

usefulV mprove'ments in Sash-Barsf. f or Glass .B oofs'; 'and I dohereby declare the following to be a full, cleargand exact descri tion of tli 'e invention, s'uch'as-.will enable o hersv v skilled in theart to which it appertains to,"

- make and use the saine.

if The' subject' of my invention is a novel sash-bar for glass roofs., The essential con dition which ,from a ractical standpoint mustbe :fulfilled by suc sashbars,-in addition tocheapness, 1s lightness 'combined with -great resistance to vertical and lateral bending; the s ashlbars must also enable the glasses to be quickly fixed, while allowing a in amount of'resilenoe; they must preai the entry of rain-water and the drip of `;sweatwhich collects on 4the inside o f the roof; These conditions are only partly fullled by prior sash-bars. VV`The majority of the latter consist of shaped rolled iron; the great weight and the relatively high price of which essentially Aincrease the costs of the rooting.' Furthermore it is impossible to secure the with capa ility of yielding 'unless springs are employed. With a View to avoiding great weightfand high price of the shaped #rolled iron, sash-bars of smooth rolled iron and sheet metal oi of sheet metal alone, have been manufactured. The former, however, differ but little in regard to weight and price from the sash-bars of shaped rolled 1min-while the latter do, not possess sutlicient stability.

40 The new sash-bar forming the sub'ect of the inventonfconsists ofv a strip o sheet metal fashioned in a certain manner on the creasing or swaging machine, as the drawing shows, in which the new sash-bar is illustrated in section in connection-with two different kinds of devices fr securing it.

The sash-bar consists essentially of a. broad crossweb a, combined with two vertical ribs b, forming in conjunction witli'the web tra deep trough with side walls slightl inclined toward each other. Laterally o thes'e side walls b are two vertical ribs d, connected with tlieforme'r by two shallow troughs c. The bottomedges of the vertical ribs d are outwardly and upwardly bent and thus constitute troughs e which serve to catch the lasses to a rolled iron' sash-bar Patented Jan. -18,'1910.

moisture which collects on the inside of the glass roof, while the troughs o are destined V to receive the ackin material, e. g., 'felt' strips f, on w ich t e glasses rest. The

lasses lying oiithe so-shaped sash-barren e secured to itin various ways. One, extremely' practical manner of fixing is shown in F i ure 1'. The bolt h, projecting between the g asses, carries at its lower end a fork,65

with outwardly bent prongs z', which lic against the inside of-tlie lateral walls b o fl the central trough of the sash-bar b. Between the glasses and the nut 7c at the top of the bolt there is a packing-strip Z and above it a resilient strip of sheet-metal m, dis osed in well-known manner.' y

he essential advantages of the new sash# bar over prior ones are the extreme cheapness due tothe lowiprice of the material and the sim licity of the construction, and they extreme y light weight, combined with exceedingly great strength. For the vertical pressure is taken up by four high vertical ribs b and d, the height of which', 480

and thus the stren h, can be readily in'- creased or decrease depending u O n the extent of projection of the roof and t e load such as is not possible with shaped rolled iron without a considerable additional expense. Lateral pressure is taken up by tive horizontal ribs, viz., the broad riba, and the bases of the packing-ribs c and those of the troughs c.

A further essential advantage is the niitv ural resilience, obtained for the first time by means of the new sash-bar and which renders it valuable articularl'y' for open shed roofs. For if t-Eere is a strong windpressure acting from below upon'the glasses, 96

such as is frequently the case with shed roofs, the glasses can rise a little,`the prongs 1l of the bolt 11, pressing the ribs b s ight y apart and sliding u them. Any rainwater 'which may enter cs itethe packing does space, but is carried y o' bythe central trough b a b, which thus not reach the covere acts as' an emergency trough.

Like the vertical rigidity, the lateral rig-- idity of the sash-bar also can'be increased or decreased without trouble or exiense, as desired, through suitably alteringt e le h ofthe ribs,- such as is. not possible with ro edironrribs. The ribs b and d can alsoV besof different len hs, without the essential advantages of -e sash-bar being affected.

Fig. 2 shows a simpler method of securing the glasses to the sashfbar, which at the same time does not interfere with the natural resilience ot 'the central trough b ab. There are here riveted or soldered to the upper part of the ribs Z1 Z1 strips of sheet 'copper s, which simply pass between the glasses g and throufrhvslots in the packingstrips ZA m, above which they are bent over outwardly. ln order to prevent' the formaascertained the nat-ure ot' my said invention,

:ind in what manner the same is to be performed, l declare that what I claim is:

l. A sash-bar for glass roofs consisting of a` sheet metal trough with upwardly converging walls, plate-supporting flanges extending outwardly on each side from the trough, and ribs extending downwardly from the outer edge ofthe flanges and uptui'ned at their lower extremities to forni supplemental troughs.

2. A sashsbar for glass roofs` consisting of a sheet metal trough with upwardly con-` verging wallss plate-supporting flanges extending outwardlyv en each side from the trough'. and provided with a shallow groove,

and ribs extending downwardly from the outer edge of theflanges and uptuined at theirlower extremities to ferm supplemental troughs.

-3. n Combination, a sash-bar for glass roofs consisting of a sheet metal trough,

'plate supporting flanges exten ing outwardly on each side of the trough and ribs extending downwardly from the outer edges of the flanges and upturned at their lowereidfremities, contiguous glass plates supported by said flanges and yielding means for holding said gla'ss lates afliinst the flanges.

4f. A sas i-bar o resilient sheet metal having upwardly converging sidewallsin conibination with a wedge-shaped piece fitting between the side walls, and means for drawing the wedge-shaped piece upward with r'espect to the sash bar.

5. A sash-bar of resilient sheet metal hav ing upwardly converging side walls and upper lateral flanges, 1n combination with a wedge-shaped piece fitting between the side walls, glass plates restino on said flanges. and means secured to -tie wedgeshaped piece for holding the glass plates against said flanges.

6. A sash-bar`0f resilient sheet metal having upwardly converging side walls, in combination with a wedge shaped piece ar- 4ranged in frictional4 en agement with the iiiner surfaces of the si e walls, whereby the walls are spread apart when the wedgeshaped piece is pulled u ward.

In testimony whereof hereunto alix my signature in the presence of two witnesses.

' AUGUST `WINDEKNECHT. Witnesses

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