{"product_id":"early-patent-model-cable-car-grip-by-chicago-model-works","title":"Early Salesman Sample Cable Car Grip by Chicago Model Works","description":"\u003cp\u003ec. 1890s\/1900s; Chicago Model Works - Chicago, IL\u003cbr\u003e\n\u003cbr\u003e\nMiniature mechanical salesman's model of a cable car grip mechanism, built to illustrate the function of the clamping system used in early cable transit. The riveted metal frame houses a lever-actuated linkage that drives a central gripping assembly, mimicking the action of full-scale grips used to seize and release a continuously moving underground cable. Dual cylindrical housings flank the central plunger, while the arched top frame and pivoting handle translate hand force into controlled compression-essentially a scaled, working explanation of how gripmen controlled speed and motion. The open construction exposes every moving part, emphasizing clarity of function over finish, exactly as intended for patent review or sales demonstration.\u003cbr\u003e\n\u003cbr\u003e\nChicago Model Works produced finely detailed mechanical patent models for inventors, translating complex industrial systems-like cable transit technology-into tangible, functional miniatures during the late 19th and early 20th centuries.\u003cbr\u003e\n\u003cbr\u003e\nShows light, even wear throughout including surface oxidation, minor grime in recesses, and age-consistent patina. Mechanism remains intact and articulates smoothly by hand.\u003cbr\u003e\n\u003cbr\u003e\n3.5\" W x 8\" H\u003cbr\u003e\n\u003cbr\u003e\nMM - - 040726\u003c\/p\u003e\n\n\u003cp\u003eFor information regarding shipping, please visit our Terms \u0026amp; Conditions page \u003ca class=\"GeneratedLink\" href=\"https:\/\/industrialartifacts.net\/pages\/shipping\" target=\"_blank\"\u003ehere\u003c\/a\u003e.\u003c\/p\u003e\n","brand":"Industrial Artifacts","offers":[{"title":"Default Title","offer_id":43975251886123,"sku":"20083","price":3750.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0194\/8170\/files\/c78b99b2-7928-563a-b091-531360e9043c.jpg?v=1777059684","url":"https:\/\/industrialartifacts.net\/products\/early-patent-model-cable-car-grip-by-chicago-model-works","provider":"Industrial Artifacts","version":"1.0","type":"link"}