Challenge HM61 Hi-Speed Printing Block Holder – Made in USA

Description :
This small metal tool is a Hi-Speed HM61 printing block holder made by The Challenge Machinery Company of Grand Haven, Michigan. Designed for use in letterpress and offset printing, the block secures movable type or image plates for precision alignment. Its compact form factor and precise machining suggest it was part of a professional printshop setup. It features patent markings, screw alignment slots, and a center tension mechanism. Though no longer used in most modern print processes, it’s a durable and collectible tool from America’s industrial printing era.

Era:
Mid-20th Century

Style:
Industrial Printshop Utility

Technique:
Precision-machined steel casting with engraved labeling

Tools Used:
Lathe, milling machine, engraver, thread tap

History:
Used in letterpress and early offset presses for holding printing dies or image plates

Manufacturer / Maker:
Maker: The Challenge Machinery Co., Grand Haven, MI

Suggested Weight:
Approx. 0.5 lbs

Item Number : P13987

Category : Industrial Misc

Brand : The Challenge Machinery Co., Grand Haven, MI

Measurements

Width : 3"