US 1990694 A
Description (OCR text may contain errors)
Feb. 12,1935. H. JAQOBS R 1,990,694
METHOD OF PRODUCING sumikil}fr s-lgafipmnrsimp THE LIK Filed Feb. 10, 193i I E/ roe flew/WV 75 C088.
w WWW Patented Feb. 12, 1935 UNITED STATES PATENT OFFICE METHOD OF PRODUCING SURGICAL INSTRUMENTS AND THE LIKE ith the foregoing and other objects in View,
' my invention consists in certain novel features of construction and arrangements of parts that will be hereinafter more fully described and claimed and illustrated in the accompanying drawing in which:
Fig. l is a perspective view of a sheet of metal produced in accordance with my improved method and from which sheet the parts of various in struments and tools are stamped.
Fig. 2 is anelevational view of a pair of shears produced in accordance with my improved method.
Fig. 3 is an elevational view of a pair of forceps constructed in accordance with my improved method.
Fig. 4 is an elevational View of a pair of tweezers constructed by, my improved method.
The metal from which instruments are produced in accordance with my improved method, is an alloy composed of nickel, copper, iron, manganese,
silicon and carbon combined in approximately the following proportions.
Per cent Nickel 67 Copper- 28 Iron 1 Manganese 1 Silicon 1 Carbon 1 With suitable dies the instrument or parts thereof are cut from the sheets as illustrated by dottedrlines in Fig. 1 and after being machined to give the desired shape, the parts are assembled to together in a suitable form various instruments such as shears, forceps,
tweezers, scalpels and the like.
After the parts of the various instruments are properly machined and finished, they may be tempered to any degree desired and which tempering is essential where the instruments have cutting-edges. In the production of tools and instruments having cutting edges by my improved method, such tools and instruments-may be tem-' pered by subjecting same to heat from 1800 to 1900 degrees F. 4 In practically the same manner the cold rolled sheets of metal may be cut with suitable dies to form the blades of knives, razors and other cutting instruments.
The instruments, tools and blades formed from my improved metal are stainless, rustproot, highly resistive to practically all acids and the metal may be readily cleansed, sterilized and maintainedinsanitary condition. I
Referring-by numerals to the accompanying drawing, 19 designates a cold rolled sheet of metal from which the parts of the instruments or tools are cut, 11 designates the practically duplicate parts of apair of scissors or shears, 12 the duplicate parts of a pair of forceps and 13, 13 the duplicate parts of a pair of tweezers.
Thus it will be seen that I have provided an improved method for the production 01' surgical instruments and the like, and the metal ,from which the instrument parts are cut or stamped, being stainless, rustproof and practically acid resistive.
I claim as my invention.
The herein described method of stainless rust-proof acid resistive instruments and f;parts thereof, which consists in producing an alloy composed of 67% nickel, 28% copper, 1% iron, 1% manganese, 1%.silicon and 1% carbon, cold rolling said alloy into sheets 40 "of suitable thickness, then cutting or stamping from said sheet the parts of a tool or instrument, then machining said parts to finish the same and then tempering those parts having cutting edges.
I producing 35 v