US1404326A - Fbiedbich paul schmidt - Google Patents
Fbiedbich paul schmidt Download PDFInfo
- Publication number
- US1404326A US1404326A US1404326DA US1404326A US 1404326 A US1404326 A US 1404326A US 1404326D A US1404326D A US 1404326DA US 1404326 A US1404326 A US 1404326A
- Authority
- US
- United States
- Prior art keywords
- blade
- support
- sharpening
- fbiedbich
- helices
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 229910000831 Steel Inorganic materials 0.000 description 16
- 239000010959 steel Substances 0.000 description 16
- 230000000694 effects Effects 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 238000010276 construction Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000002023 wood Substances 0.000 description 2
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
- B24D15/00—Hand tools or other devices for non-rotary grinding, polishing, or stropping
- B24D15/06—Hand tools or other devices for non-rotary grinding, polishing, or stropping specially designed for sharpening cutting edges
- B24D15/08—Hand tools or other devices for non-rotary grinding, polishing, or stropping specially designed for sharpening cutting edges of knives; of razors
- B24D15/081—Hand tools or other devices for non-rotary grinding, polishing, or stropping specially designed for sharpening cutting edges of knives; of razors with sharpening elements in interengaging or in mutual contact
Definitions
- This invention relates to blade sharpeners in which the cutting edge of the blade is sharpened through pressure being applied to both of its sides by sharpening members between which the blade is inserted and which are caused to pass along the edge either by the blade or the sharpening men bers being moved.
- the sharpening members consist of ring-shaped protuberances on two rolls placed side by side
- the sharpening members of my novel blade sharpener are made of windings of steel wire that are held by simple supports.
- Fig. l is a plan View of a knife sharpener
- Fig. 2 being a front view
- Fig. 3 a section of Fig. 1 on the line 3-3.
- Fig. 1 a is a base preferably of wood, 6 a sheet metal support for the sharpening members, this support being made of a single piece of sheet metal.
- 0 and d are the blade sharpening members which consist of steel wire of round cross section wound in the form of helices and screwed onto the bridge-pieces e, f of the support I), the diameter of the helices being such that each turn of the one helix enters into the space between two turns of the other.
- the support Z is fixed on the base plate by a screw 9 at each end.
- a blade h, in position for sharpening, is shown in Fig. 2.
- the cross section of the steel wire used for the helices instead of being round, may have some other suitable shape. Bllt it has been found that sharp-edged steel wire is not necessary, round wire being preferred on account of its cheapness.
- An advantage of the arrangement shown in Fig. 1, in which the sharpening device is disposed at right angles to the length of the base at one end of the same, is that the apparatus is rendered easy to hold when used for sharpening and the danger of the blade slipping out and injuring the operator is eliminated. Besides, this form of the apparatus facilitates the packing of the same.
- the free space on the base at the side of the sharpening device is available for directions for using the apparatus, for advertisements, or for ornamentation by transfers, etc.
- a blade sharpener comprising two adj acent wire coils, a support for the said coils, and a holder for the said support.
- a blade sharpener comprising two adjacent coils consisting of round steel wire, a support for the said coils, and a holder for the said support.
- a blade sharpener comprising a base plate, two adjacent steel wire helices disposed at one end of the base plate at right angles to its length, a support for the said helices, and means for attaching the support to the said base plate.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
Description
F. P. SCHMIDT.
BLADE SHARPENER.
APPLICATION FILED AUG.9. 1920.
1,404,326, Patented Jan. 24,1922.
1 19.1. Fig.2. gun i "l f Il /ll UNITED STATES FRIEDRICH PAUL SCHMIDT, OF SUI-IL, THUBINGIA, GERMANY.
BLADE SHARPENER.
Specification of Letters Patent.
Patented Jan. 24:, 1922.
Application filed August 9, 1920. Serial No. 402,414.
T 0 all whom it may concern Be it known that I, Fnrnnnron PAUL SCHMIDT, a citizen of the German Republic, residing at 20 Herrenstrasse, Suhl, Thuringia, Germany, have invented certain new and useful Improvements in Blade Sharpeners, (for which I have filed an application in Germany, Aug. 7, 1919,) of which the following is a specification.
This invention relates to blade sharpeners in which the cutting edge of the blade is sharpened through pressure being applied to both of its sides by sharpening members between which the blade is inserted and which are caused to pass along the edge either by the blade or the sharpening men bers being moved. In distinction from known sharpeners of this general type, in which the sharpening members consist of ring-shaped protuberances on two rolls placed side by side, the sharpening members of my novel blade sharpener are made of windings of steel wire that are held by simple supports. By my improved construction the costs of the labor and material required in producing the sharpener are reduced, and the spring action of the steel wire sharpening members improves the effect of the sharpener.
constructional forms of the invention are illustrated in the drawing in which Fig. l is a plan View of a knife sharpener,
Fig. 2 being a front view, and
Fig. 3 a section of Fig. 1 on the line 3-3.
In Fig. 1 a is a base preferably of wood, 6 a sheet metal support for the sharpening members, this support being made of a single piece of sheet metal. 0 and d are the blade sharpening members which consist of steel wire of round cross section wound in the form of helices and screwed onto the bridge-pieces e, f of the support I), the diameter of the helices being such that each turn of the one helix enters into the space between two turns of the other. The support Z: is fixed on the base plate by a screw 9 at each end. A blade h, in position for sharpening, is shown in Fig. 2. B pressing the blade down between the helices and moving it at right angles to their coils the elastic helices will be caused to yield and moved apart and their pressure against the sides of the edge will produce a sharpenmg effect. The cross section of the steel wire used for the helices, instead of being round, may have some other suitable shape. Bllt it has been found that sharp-edged steel wire is not necessary, round wire being preferred on account of its cheapness.
By making the support for the helices of a single piece, an equal distance between the steel wires along the whole length of the helices is ensured, without any attention being paid in fixing the support on the base plate. This point is important in mass production. Another advantage obtained by this kind of support is that the pressure ex erted in sharpening a blade cannot cause the bridge-pieces to be forced apart.
An advantage of the arrangement shown in Fig. 1, in which the sharpening device is disposed at right angles to the length of the base at one end of the same, is that the apparatus is rendered easy to hold when used for sharpening and the danger of the blade slipping out and injuring the operator is eliminated. Besides, this form of the apparatus facilitates the packing of the same. The free space on the base at the side of the sharpening device is available for directions for using the apparatus, for advertisements, or for ornamentation by transfers, etc.
I claim:
1. A blade sharpener comprising two adj acent wire coils, a support for the said coils, and a holder for the said support.
2. A blade sharpener comprising two adjacent coils consisting of round steel wire, a support for the said coils, and a holder for the said support.
8. A blade sharpener comprising a base plate, two adjacent steel wire helices disposed at one end of the base plate at right angles to its length, a support for the said helices, and means for attaching the support to the said base plate.
In testimony whereof I have signed this specification in the presence of two witnesses.
F. PAUL SCHMIDT. Nitnesses I-lnwrc ALBRECHT, Lnoronn UNGER.
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US1404326A true US1404326A (en) | 1922-01-24 |
Family
ID=3400646
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US1404326D Expired - Lifetime US1404326A (en) | Fbiedbich paul schmidt |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US1404326A (en) |
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0
- US US1404326D patent/US1404326A/en not_active Expired - Lifetime
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