Improvements in artificial limbs / [Amos Lincoln Woodland].

  • Woodland, Amos Lincoln.
Date:
1899
Catalogue details

Licence: Public Domain Mark

Credit: Improvements in artificial limbs / [Amos Lincoln Woodland]. Source: Wellcome Collection.

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    Woodland's Improvements in Artificial Limbs. COMPLETE SPECIFICATION. Improvements in Artificial Limbs. I Amos Lincoln Woodland, of Midland, County of El Paso, State of Colorado, United States of America, Professional Cook, do hereby declare the nature of this invention and in what manner the same is to be performed, to be particularly described and ascertained in and by the following statement:— My invention relates to improvements in artificial legs, and feet, and the objects of 5 my improvements are, first, to construct an artificial leg which will be light durable and easy to operate, noiseless, and require little or no oiling of joints ; secondly to construct a foot which will perfectly adjust itself to the different positions required in natural walking and to make the foot light, durable, and without metal springs or unnatural sound when coming into contact with the floor or sidewalk when walking ; 10 thirdlv to provide an adjusting apparatus for the compensation of wear and to prevent rattling in the joints and to so arrange this mechanism that the socket in the thigh piece will admit of as long a stump as possible without having to make the knee joint lower than it should be; fourthly, to make knee springs which can be adjusted to suit the ideas of the wearer. I attain these objects by means of the 15 mechanism illustrated in the accompanying drawings which are made a part of this specification. Figure 1 is an exterior side view of the leg and foot constructed in accordance with my invention. Fig. 2 is an exterior side view of the foot and shews the foot as it appears when 20 the body of the wearer and the top of the leg are moved forward with weight resting on toe and ball of foot. Fig. 3 is a vertical, sectional, longitudinal side view of the centre of the leg and foot as they appear when the weight is taken off of the leg preparatory to taking an advancing step. 25 Fig. 4 is a similar view but sectional only about the knee shewing the position of the leg and foot, stop-rod and springs when they have been moved forward in making a step, the weight resting on the heel. Fig. 5 is a similar view shewing the position of the leg, foot, stop-rod, and springs adjusted to a sitting position. 30 Fig. 6 is an exterior side elevation of the foot as it appears before the rubber springs and the leather straps have been placed in position and attached to the instep, also shewing the shape of the ankle where it joins on the shank. Fig. 7 is an exterior side elevation of the foot complete ready to be secured to the shank. «^ Fig. 8 is a detail side view of the roller and frame for attaching the suspenders to the leg. Fig. 9 is an enlarged exterior longitudinal view of the device forming the knee- joint and adjusting apparatus. Fig. 10 is a sectional view of Fig. 9 taken through the points indicated by the 40 line 1—2. Fig. 11 is a sectional side view of the centre of the knee between the dotted lines 3 and 4, I ig. 1, with the parts in the same position as shewn in Fig. 3 and gi\ing a \ie\\ to the paits shewn in fig. 10, and in addition thereto a sectional end view oi the joint and adjusting apparatus for governing the action of the inferior *5 part of the leg and a longitudinal exterior view of the stop-rod springs, bushings,
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