Specification of William Edward Newton : artificial arms.

  • William Edward Newton
Date:
1866
Catalogue details

Licence: Public Domain Mark

Credit: Specification of William Edward Newton : artificial arms. Source: Wellcome Collection.

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    Newtons Improvements in the Construction of Artificial Arms. Fig. 11 represents a modification of the mechanical arm, the hand beino- 7 o shewn in longitudinal section. This arm is attached to the body by an arrangement of straps, the two extremities of which are connected to two rings x, x1, which are fixed to the arm. To the ring x is connected the cord, which is supported upon a puliey z9 and is attached to one end of the lever u. 5 It will now be understood that if the ring x is pulled by the shoulder strap the cord y will cause the arm to turn on the hinge t in order to raise the fore arm ; at the same time it will put in motion the lever w, to which are connected the cords q[9 q2, one of which is connected to the lever of the four fingers, and the other to the lever of the thumb. The fingers are held 10 always open by the spring r1, which is attached to a cord which connects the two levers. The cord y2, which is connected by one end to the ring x1, and by the other to some part of the arm, and which slips over the bar of the hinge £, is intended to open the arm when tension is put on the strap c, which is attached to the ring. It will be seen in the Drawings that the fingers are 15 in their normal position, and that they can only be closed by applying force to the ring x. Having now described the Invention of “ Improvements in the Construc¬ tion of Artificial Arms, and having explained the manner of carrying the same into effect as communicated to me by my foreign correspondent, I 20 claim as the Invention secured to me by Letters Patent as aforesaid, the mode herein set forth of constructing artificial arms, and operating the several parts. In witness whereof, I, the said William Edward Newton, have hereunto set my hand and seal, the Second day of June, in the year of our Lord 25 One thousand eight hundred and sixty-six. „r. W. E. NEWTON, (l.s.) Witness, J. W. Moffatt, 66, Chancery Lane. U * i j „ LONDON: Printed by George Edward Eyre and William SporriswooDE 1 rmters to the Queens mast Excellent Majesty. 18GG. 30