US317393A - Wilhelm loeenz - Google Patents

Description

(No Model.) A

W. LORENZ. METHOD OFVFORMING HANDLES POR GUTLERY.

No. 317.393,. `1@1-@111-,ef1 May 5, 1885.

N. Pneus. muwulmgnwr. wlmi-gam DA a UNITED. STATES `PATE1\V1? y, OEEICE. y

WILHELM LORENZ, oEoAELsEnI-IE, BADEN, GERMANY.

METHOD OF FORMING HANDLES FORCUTLERY.

SPECIFICATION forming part of Letters Patent No. 317,393, dated May 5, 1885.

Application filed December 21, 1853. (No model.) Patented in Germany April S, 1383, No. 26,564`; in England June 8,1883, No. 2,553,

in Belgium June ifi, 1853, No. 61,727; in France August 14, 1883, No. 155,097, and in Austria-Hungary August 22, 1833, No. 4,534.

To all whom, t may concern..-

Be it known that I, WILHELM LORENZ, of

Carlsruhe, in the Grand Duchy of Baden, in-

the Empire of Germany, have invented certain new and useful Improvements in the Method of Forming Metal Handles for Knives, Forks, &c.; and I do hereby declare that the following is a full and exact description thereof.

rIhe present handles are formed in one piece in the following way: Disks of the required inetal-such as brass,. alfenidc, German silver, christelle, nickel, or the like-are iirst drawn into tubes, of which the diameters and lengths correspond to the dimensions of the handles to be produced. rIhese tubes may be cylindrical, or, preferably, tapered to conform to the taper of the handles, and annealed, if annealing is necessary. 4Then they are filled with lead or any other suitable duetile mate'- rial of a low meltingpoint, which relnains therein and hardens. Thereupon these tubes,

with the dense but soft filling material within, are placed between stamping molds or dies having a configuration which corresponds eX- actly to the exterior form and engraving of the handles to be made, and strongly pressed, receiving by this pressure their shape and ornamentation.

For the more effectual reproduction upon the surface of the handle of all the finely-eut ornamentations on the mold, a tapering plug or wedge is driven through the filling between the mold halves or dies into the interior of the handle, by which the lead or analogous filling material will be strongly compressed from the interior outward. Dy this means, either at one operation or by again compressing the dies, the metal of the handle is forced into even the finest engravings of the'inolds. The handles thus stamped are then in a suit-` able furnace subjected to a sufiiciently high tempera-ture for the filling material to melt and run out. The handles are then ready for receiving the blades, polishing, burnishing, &c. In stamping handles made of a soft metal-as biocktin, britannia, queenis metal, pewter, &c.-thc filling may be of resin, wax, or the like. In producing handles of a very complicated configuration they may be prepared for their ultimate shape by pressing them beforehand on divided molding pieces or dies having an approximate shape, by which operation the last pressing,l and therewith the obtaining of the exact shape and ornamentation, will be facilitated. The blades may be introduced and secured therein in any convenient way.

The accompanying drawings represent what I consider the best means of carrying out the invention.

Figure l is a cross-section, and Fig. 2 a longitudinal section, showing the tube or shell before it isfilled. Fig. 3 isa cross-section, and Fig. 4 is a longitudinal section, showing the tube with a tapering core of steel driven into the iilling. Fig. 5 is a cross-section of a handle after a steel wedge has been inserted in the tapering cavity and the mass strongly compressed between dies.

gitudinal section of the same. Fig. 7 is a cross-section showing the dies moved a little distance apart and the wedge farther driven in. Fig. S is a corresponding longitudinal section. Fig. 9 is a section showing the dies again powerfully compressed, to complete the impression of the dies by acting asecond time on the handle after it has been expanded by the driving in of the wedge. Fig. 10 is acorresponding section. Fig. 1l is a longitudinal section showing the handles after the soft filling and wedge have been removed. Fig. l2 shows the handle with the shank of a blade soldered in place ready for use.

Similar letters of reference indicate corresponding parts in all the figures where they occur.

A is the tube or shell, of brass or other sufficiently-yielding metal to allow ofbeing drawn and stamped, as described. B is the lling, of lead or other material adapted to yield easily to allow change of form and yet to ofer a reliable internal pressure to force up the material of the shell A, to assume the exact form of the interior of the dies. C is a taper wedge, of steel or the like, slightly smoked or otherwise prepared to avoid adhesion of the metal B. D is the upper die, andE the lower die. M, Fig. 12, is the blade and shank.

Fig. 6 is a lon- I elaini as my invention- In testimony whereof I have hereunto set The described method of forming,` ornanientiny hand, at Berlin, this 24th day of August, ed handles for cutlery, consisting in filling 1883, in the presence of two subscribing witproperly-drawn tapering tubes with melted nesses. 5 lead or other material fusible at a low temperature, then subjecting the tubes to press- WILHELM LORENZ. ure between proper dies to partially give the desired impression, then driving a Wedgeinto Witnesses: the filling while in the dies, and then subjeet- B. ROI, ro ing to heat to remove the filling, as set forth. C. GRONERT. j

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