Fraser v. Duffey

196 F. 900, 1912 U.S. Dist. LEXIS 1598
District Court, D. Massachusetts·Decided February 26, 1912·No. No. 70; old No. 463·Published·Cited by 2 cases

Opinion

COLT, Circuit Judge.

[1] This is a suit for infringement of the Tyler patent, No. 601,622, dated March 29, 1898, for an improvement in shoe lasts. In describing the invention, the specification says:

“My invention relates to that class of lasts which are divided transversely into two sections, so as to allow the last to be contracted in length and wilh-drawn from the boot or shoe without exerting any strain upon the upper by the removal of the last; and the object of my invention is to increase the strength and rigidity of the last when in use and to so shape and arrange the sections of the last as to facilitate its removal and increase its efficiency.
“The last embodying my invention is divided transversely into two sections. One of these sections A includes the heel portion of the last and the other section 11 the forward portion of the last, these sections being generally called respectively, the ‘heel’ part and ‘fore’ part. In forming these parts the last is (in the preferred form now shown) divided on the line O O', extending from the bottom of the last obliquely upward, so as to make the angle D on the portion B between the line O O' and the bottom of the last an"obtuse angle. The portion B is then cut away on the line E A", beginning at or near the center of the line O O' and extending obliquely upward and forward to the point M', thence on the line E’ E* vertically, so as to form a right angle with the top line F of the last, forming an open space (? between the portions A and B. The leaves II II of a hinge are inserí ed in slots cut in the sections A B of the last and are held in place by pins (shown by broken lines Ú' IE), so as to connect the-two sections of the last by a hinge-joint having its pintle I or axis of its rotation lying within the angle included between the lines G O' and E E'. The position of the pintle0/ is determined by making the radial distance between the axis of the pintle and the center [901] of the heel-section at a, as indicated by the broken Une a’, equal to the radial distance from the axis of the pintle to the point b at the bottom of the heel-section, as indicated by the broken line V, said measurements being taken in a plane dividing the last in the center vertically, as shown by the sectional view in Fig. 2, and the two equal radii a! and V are also the radii of the arc of the circle a b, so that the path of the point b as the heel-section is raised will correspond with the arc a 6, or, in other words, the axis of rotation of the heel-section is concentric with the arc of the circle a b, bounding the rear side of the heel-section from the bottom of the heel at 6 to the eenter of the heel at a.”

The invention is illustrated in the following drawing from the patent:

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Fraser v. Duffey, 196 F. 900, 1912 U.S. Dist. LEXIS 1598 (D. Mass. 1912).

196 F. 900 (Fraser v. Duffey) — published by Counsel Stack Legal Research, free access to 12M+ legal documents.

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