US1976070A

US1976070A - Hone

Info

Publication number: US1976070A
Application number: US630773A
Authority: US
Inventors: Hermann Louis
Original assignee: Individual
Current assignee: Individual
Priority date: 1932-08-29
Filing date: 1932-08-29
Publication date: 1934-10-09
Anticipated expiration: 1951-10-09

Description

Oct. 9, 1934- HERMANN 1,976,070

HONE

Filed Aug. 29,. 1932 v I 122197150); xii/76556.9. (3 jazz? 156 7771 7171,

56 W J M 3 Patented Oct. 9, 1934 UNITED STAT s PATEN OFFICE 7 Claims.

10" end the invention consists in producing an artificial stone of a balanced mixture of finely powdered abrasive, polishing and lubricating ingredients characteristically prepared and incor- I porated with a suitable liquid cement as a binder and mass hardening agent, as hereinafter more specifically'described and afterwards pointed out with particularity in the appended claims.

In'the accompanying drawing forming part of this specification,-

Fig. 1 is a perspective view of one form of hone made in accordance with the invention;

Fig. 2 is a similar view of a modified form of hone; and j Fig. 3 is a similar view of a further modification.

Referring now more particularly to Fig. 1 of the drawing, the hone comprises an artificial block or slab 5 molded from a mixture of white powdered zinc in the proportion of one-fourth of the bulk, and another fourth part of the bulk comprising an ingredient prepared by burning a mixture of equal parts in bulk of powdered pumice stone and sawdust, the other one-half A of the mixture comprising the residue from the burning of a mixture in equal parts in bulk of the finest grade of white sand and sawdust. The white zinc powder is of the ordinary prepared commercial kind of the finest and softest texture, and the powdered pumice stone used in the no mixture with the sawdust is of the ordinary commercial kind of the finest reduction. The resultant residue from the burning of the pumice stone powder and sawdust is a relatively soft a textured polishing element, so that mixed with the residue of the burnt mixture of the sand and sawdust, which is an eflicient though finely powdered abrasive, and the zinc serving as an effective lubricator in the mixture, to which is added a sufficient quantity of a suitable liquid '50 cement as a binder and hardening agent for the mass, a stone is produced which is ideal for the honing of razor blades of the average degree of hardness, the color of the stone molded from this particular mixture being a medium gray.

While a hone comprising the ingredients above noted and in the proportions stated, is ideal for the honing of the average razor blade, in the hands of an operator ordinarily skilled, and by the use of which the liability of overhoning is avoided, there are some cases where the blade to 03 be sharpened is harder than the average and, obviously, a relatively harder stone is required in the honing process, particularly in initially sharpening the blade, and to this end the slab may be molded entirely of the one ingredient C5 which is the resultant product of burning the half and half bulk mixture of white sand and sawdust with a suficient quantity of the liquid cement as a binder and hardening agent. The stone composed from this last named ingredient '20 is of a dark gray color and, preferably, it is molded in direct engagement with a stone of the mixed ingredients first herein described, or otherwise at-' tached thereto so that the two characters of stones are included in one unitary structure 2 whereby a razor blade may be conditioned on either one side or the other of the block, or initially treated on the one side and finished on the other. As shown in Fig. 2 one-half of the block or slab designated by the numeralG, comprises the same material as the slab 5 in Fig. 1, While the other half '7 of the modified block or slab, comprises the sole ingredient just above noted.

In other cases there are blades of relatively softer steel than the average and, of course, a correspondingly soft textured honing stone is required for sharpening and setting the blade. To this end a stone may be molded from the same ingredients first herein described but in different proportions in the mixture. For example, an ideal stone for the purpose may be molded from a mixture of one-third bulk part of the zinc powder, one-third bulk part of the product resulting from the burning of the mixed pumice stone and sawdust, and the other one-third part being the product of burning the mixture of sand and sawdust. It will thus be seen that the proportion of relatively hard abrasive powder is reduced in the mixture, while the percentage of polishing slab of this last noted modification, is composed of the relatively softer and lighter colored mixture last described.

While the particular ingredients and in the proportions herein specifically described, are ideal for the purposes intended, the invention is not necessarily limited to the same, as there may be equivalents substituted for the particular materials noted and changes in the proportions of the mixture with the scope of the appended claims.

Having thus described my invention, what I claim as new and desire to secure by Letters Patent is: I

1. An artificial honing stone for razor blades and the like, comprising a mixture of a finely powdered abrasive substance resulting from heating fine sand and sawdust, a finely powdered polishing element and a finely powdered lubricant with a cementitious binder and hardener.

2. An artificial honing stone for razor blades and the like, comprising a mixture of a powdered product resulting from the burning of fine sand and sawdust, a product resulting from the burning of powdered pumice stone and sawdust, and powdered zinc with a cementitious binder and hardener.

3. An artificial honing stone for razor blades and the like, comprising a mixture of one-half bulk part of a product resulting from the burning of fine sand and sawdust, a one-fourth part of a product resulting from the burning of pumice stone and saw dust, and a one-fourth part of powdered zinc, with a cementitious binder and hardener.

4. An artificial honing stone for razor blades and the like, comprising one-half bulk part of a product resulting from the burning of equal parts of fine white sand and sawdust, a one-fourth bulk part of a product resulting from the burning of equal parts of powdered pumice stone and sawdust, and one-fourth bulk part of powdered zinc with a cementitious binder and hardener.

5. A hone for razor blades and the like comprising a block or slab, one-half of which is composed of a mixture of one-half bulk part of a finely powdered abrasive material resulting from heating fine sand and sawdust, one-half bulk part of finely powdered polishing material, and onefourth bulk part of a finely powdered lubricant, with a cementitious binder and hardener, the other half of said block or slab comprising the sole ingredients of finely powdered abrasive material with a cementitious binder and hardener.

6. A hone for razor blades and the like comprising a block or slab, one-half of which is composed of a mixture of one-half bulk part of a finely powdered abrasive material resulting from heating fine sand and sawdust, one-fourth bulk part of a powdered polishing material, and one-fourth bulk part of a powdered lubricant, with a cementitious binder and hardener, the other half of said block or slab comprising a mixture of one-third bulk part of the finely powdered abrasive material, one-third bulk part of the powdered polishing material, and one-third bulk of the powdered lubricant, with a cementitious binder and hardener.

'7. An artificial honing stone for razor blades and the like, comprising one-third bulk part of powdered zinc, one-third bulk part of the product resulting from the burning of equal parts of mixed pumice stone and sawdust, and one-third bulk part of the product resulting from the burning of equal parts of white sand and sawdust.

LOUIS HERMANN.