第37章 纺车
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刻回答。
赵珩亦不着急,正欲自己揭晓答案,紫女却又忽然开口答道:
「若按赵国通行帛制,一匹帛宽二尺二寸,长四十尺,需用生丝约三十两。一个熟练女工,单日最多缫丝丶纺纱得二两。不计织造,仅纺纱成线,便需十五日。这还不算缫丝丶络丝丶整经丶穿综丶织造等诸多后续工序的耗时。若全部算上,一匹绢布从蚕茧到成布,少则月余,多则两三月,亦是常事。」
赵珩略感诧异:「姑娘竟对此如此熟稔。」
紫女微笑:「醉月楼中,乐姬衣裙丶宾客赏赐丶日常用度,皆需布帛采买。妾身既主事,自然要知市价丶晓工本丶懂优劣。否则,何以经营?」
赵珩倾佩点头:「姑娘所言极是,正如书上言,治业需明细节,知根本。」
他走到那架半改造的纺车前,拍了拍粗糙的木架:「然而,正因知晓这工本耗时,方知现今通行之纺车,弊端显着,效率低下。」
他在纺车前坐下,双手虚按在纺车木架上,而因为纺车改造未成,踏板与传动机构尚未连接,所以他脚下只能示意性的虚踏,以做示意。
「姑娘请看,现今纺车多为手摇单锭。」
赵珩双手模拟动作,左手虚摇,右手手指做引丝状:「女工一手摇动纺轮,一手理丝丶引纱。便是这般,一心二用,顾此失彼,丝线易断,废丝率颇高。女工劳作一日,臂酸腕痛,产量却低。」
他停下动作,抬眼看向紫女,见她正好笑的看着他,也不以为意,只是继续道:「但若将纺车,从手摇单锭,改为脚踏多锭——」
他双足虚踏,做出交替踩动的节奏:「双足踏动踏板,带动大轮。以大轮传动小轮,可同时驱动三至五个锭子旋转。」
他一边说,一边用手比划连杆传动的轨迹,然后手上再次模拟理丝,引纱的动作。
这次,赵珩双手配合,动作便流畅了许多:「如此,女工双手得以解放,可专司理丝丶引纱丶接续。不仅大大降低劳作强度,更可避免手摇时的顾此失彼,显着减少断头和废丝。」
听到这里,紫女脸上的笑意已悄然收敛了。
而赵珩则已起身,拍了拍手上沾着的少许木屑,走到那匹素绢旁。
「依我估算,改良后的脚踏多锭纺车,莫说是熟练女工,便是平民妇人,乃至于稍加训练的女童,日产纱线量都能从二两提升至六两,乃至八两。」
他看向紫女:「这意味着,同样一匹绢布所需的基础纱线,原先需十五日方能纺成,现下或许只需五日,甚至更短。」
厢房里安静下来。
紫女眼中已全无玩笑之色,她走到纺车前,这次真的轻触那些被改装的部件。木料粗糙,榫卯处还有毛刺,显然只是雏形。
她沉吟起来。
而赵珩仍然没有停下。
他走到墙边,拿起炭笔,在木板上快速勾勒。
线条简洁,但勉强能看出那是一个带有多个踏板和复杂提综装置的织机示意图。
「不止纺纱,织造亦可革新。」他边画边说:「现今织坊所出,多为平纹丶斜纹等素色或简单纹样织物。即便贵族所用的锦绮,其复杂花纹也需织工手工挑花,凭记忆和经验操作。纹路相对简朴,且耗时极长,价格昂贵。」
他放下炭笔,指向潦草画下的织机图。
「我有一种『提花机』的构想。」他说:「可用类似的脚踏式传动,以多个蹑(踏板)分别控制不同综片的升降。如此,织工双手可解放出来,专用于投梭打纬。」
然后,他的手指移向那幅线绳编织的图样。
「更关键的是,可预设『花本』。」
紫女不由走近两步,微微倾身,认真细看:「花本?」
「即用线绳,按预设图案,编成一套『程序』。」
赵珩用手比划编织的动作,解释道:「织造时,织工或助手按顺序拉动花本,织机便能自动提起相应的综片,形成梭口。织工只需循规投梭即可,无需手工挑花。」
他顿了顿,补充道:「如此,便能织出复杂对称的连续纹样。且一旦花本编成,可反覆使用,织造速度远胜手工。」
他放下木炭,拍了拍手上沾的黑灰:「至于缫丝丶染色等工序,我亦有些想法,可设法改良器具或流程,减少损耗,提升丝质与色泽牢度。」
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