泛黄羊皮纸上的复杂机械专利图

创作一幅复古专利风格的技术插图，描绘一个 复杂的机械装置，呈现在老化的米色羊皮纸上。黑色墨水线条勾勒，点缀棕褐色，手写标签，剖面视图，带有编号的组件标注，官方专利边框，以及伪造的专利号和日期。风格参照 19 世纪 90 年代的机械工程图纸。优雅、权威、具有博物馆收藏价值。

Create a vintage patent-style technical illustration of a complex mechanical device on aged cream parchment paper. Black ink linework with sepia accents, hand-lettered labels, cross-section views, numbered component callouts, official patent border frame with fake patent number and date. Style of 1890s mechanical engineering drawings. Elegant, authoritative, museum-worthy.