US35303A

US35303A - Datis

Info

Publication number: US35303A
Authority: US
Publication date: 1862-05-20
Anticipated expiration: 1879-05-20

Description

represented. j respond wit groove adapt over thejend of einem: HENRY Gr. DAVIS, phythe city, county, `and ave invented a certain Splint; and I do hereby owing is a full and exhe same, which I have to the obtaining of nts splintV complete,

"d to the elastic` partsp `2, Ll, `and 5, repre- Skilled the art to ention I will proceed to meteroutside must be less diameter of Aso that it may rtion` is threaded to corund" the" exterior ofthe tube y` be ornamented in any di adapted to be easily the `flngersor by any of Anearl its lower end I roove D and into this e `of met-al Ev-adapted to n. The part C is fitted fter E is inserted in the 9C `and E are perforated i Inthe exteri turn a shallo slide around t as.representedfto"receive a screw F. The j "latter secures"` the parts together, so that by j reasonofthefpieceE being unable to escape gnate like `partsin all `of metal of the` form' j thread on the redB. The- "remainder plainon` its interior and adapted N UN e, j EDsT TEs PATENT oEEIoE.

' ExTENsIoN-SPLINT.

"marien of Letters Patent No. 35,303, dated May 2o, 1862.

from the groove D, and the screw F` enter- Y ing into the hole in the piece E the nut C is unable to escape from or to slide lengthwise on A but isfree to turn around it to any extent desired. Turning the nut C in one direction causes the splint to increase its length by thrusting the part- B out from A, while turning in the opposite direction draws B further into A and diminishes the `length `of the splint. The nut may be turned as little as is desired and allows a very delicate adjustment while it also is able without additional device to retain the parts for any periodin a given position.

My splint is cheaper, lighter, 'and capable `of more delicate adjustment of the length than any before lmown to me.

I invented and gave freely to the profession some years since the .use of elastic extension .with several different forms of splints for its application and withl which the splint here rep'- resented is intended to be used, but although that system of treating theaifection designated is now familiar to the profession the splints have always been enculnbered i 1 with rack and pinion and with a pawl or its equivalent for retaining the parts in position.

The importance of simplicity in the construction, and especially of lightness, in ap- 1 `paratus of this kind, is readily apparent. The perfect facility with which my splint `may be extended to any required small eX- tent as compared with the previous devices is also very marked, and the absence of entangling projecting portions, and the almost entire immunity from liability to derangement, constitute further veryV important advantages due to the peculiarity of my invention. My invention is also better adapted to be produced very cheaply by machines than any of the previously known construe` tions.

Having now fully described my invention "what I claim as new therein and desire to secure by Letters Patent is- The within described splint composed of the tube A, threaded part B and nut or equivalent C, as a new article` of surgical apparatus, the same being adapted to operate in the manner and so as to realize the advantages herein set forth.

Witnesses:

e WM. I-I. DrcKINsoN,

WM. J. CRUMM.

HENRY GeDAvIs, j