CA1159484A - Ice-skate blade polishing method and means - Google Patents
Ice-skate blade polishing method and meansInfo
- Publication number
- CA1159484A CA1159484A CA000424443A CA424443A CA1159484A CA 1159484 A CA1159484 A CA 1159484A CA 000424443 A CA000424443 A CA 000424443A CA 424443 A CA424443 A CA 424443A CA 1159484 A CA1159484 A CA 1159484A
- Authority
- CA
- Canada
- Prior art keywords
- ice
- blade
- polishing
- skate
- surface portion
- 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
Links
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
- B24D15/066—Hand tools or other devices for non-rotary grinding, polishing, or stropping specially designed for sharpening cutting edges for sharpening skate blades, i.e. blades having two sharp edges defined by three surfaces intersecting in pairs at an angle of substantially 90°
-
- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63C—SKATES; SKIS; ROLLER SKATES; DESIGN OR LAYOUT OF COURTS, RINKS OR THE LIKE
- A63C3/00—Accessories for skates
- A63C3/10—Auxiliary devices for sharpening blades
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Grinding And Polishing Of Tertiary Curved Surfaces And Surfaces With Complex Shapes (AREA)
- Polishing Bodies And Polishing Tools (AREA)
Abstract
ABSTRACT OF THE DISCLOSURE
There is disclosed an ice-skate blade in which the portion of the ice-engaging surface of the blade which is inter-mediate the sharpened side edges of the blade, is polished to a mirror-finish, in order to decrease the friction between the blade and the ice. To polish this intermediate surface with conventional polishing compounds, a felt disc is used. A width-reducing device is used to taper the marginal portion of the disc to the width required to sharpen only the central surface of the blade and not the side edges. This device comprises an assembly of blocks, or braces, forming a V-shape slot with the inclined surfaces lined with abrasive material to receive the marginal portion of the felt disc which is reduced in width while rotated in said slot.
There is disclosed an ice-skate blade in which the portion of the ice-engaging surface of the blade which is inter-mediate the sharpened side edges of the blade, is polished to a mirror-finish, in order to decrease the friction between the blade and the ice. To polish this intermediate surface with conventional polishing compounds, a felt disc is used. A width-reducing device is used to taper the marginal portion of the disc to the width required to sharpen only the central surface of the blade and not the side edges. This device comprises an assembly of blocks, or braces, forming a V-shape slot with the inclined surfaces lined with abrasive material to receive the marginal portion of the felt disc which is reduced in width while rotated in said slot.
Description
1~59~34 FIELO OF TH IN~ENTION
The present invention pertains generally to ~ce-skate b~ade treatment means, more specifically to a novel post-sharpening treatment of such blades, namely: polishing.
OACKGROUNO Of THE INUENTION
Figure skaters, hockey players and other people using ice-skates know well the importance of having well-sharpen0d blades on their skates for greatest maneuverability, speed, quick stops, etc.
Till now the most advanced technique for imparting the above characterlstics to ice-skate blades, which are normally made of stainless steel, hAs been to grind the entire ice-contacting surface of the latter.very thoroughly with material, such as silicon carbide or aluminum oxide, 80 as to obtain a relatively smooth sur-face with very sharp edges. This grinding provides relatively good results for both figure skates having a slightly concave ice-contacting surfaca and hockey skates, wherein the ica-contacting surface may be trsnsversely flat. However, grinding the blades leaves an ice-cantacting surface which is not smooth enough and which does not therefore entirely eliminate the natural friction between ice and blade, even when a hollow grind is used.
It has been found that polishing tha already-ground ice-contacting surface of a skate blade will very significantly reduce the friction.
OSOECTS OF THE IN~ENTION
Accordingly, it is an important object of the present invention to provide an ice-skate blade polishing me~hod and maans adapted to effectively eliminate most of the friction between blade and ice which still OCCUP8 after conventional grinding.
It is another object of the present invention to provide a method and means of the character described, wh~ch can be simply combined with conventional ice-skats blade grinding equipment.
It is a corollorary object of the present invention to
The present invention pertains generally to ~ce-skate b~ade treatment means, more specifically to a novel post-sharpening treatment of such blades, namely: polishing.
OACKGROUNO Of THE INUENTION
Figure skaters, hockey players and other people using ice-skates know well the importance of having well-sharpen0d blades on their skates for greatest maneuverability, speed, quick stops, etc.
Till now the most advanced technique for imparting the above characterlstics to ice-skate blades, which are normally made of stainless steel, hAs been to grind the entire ice-contacting surface of the latter.very thoroughly with material, such as silicon carbide or aluminum oxide, 80 as to obtain a relatively smooth sur-face with very sharp edges. This grinding provides relatively good results for both figure skates having a slightly concave ice-contacting surfaca and hockey skates, wherein the ica-contacting surface may be trsnsversely flat. However, grinding the blades leaves an ice-cantacting surface which is not smooth enough and which does not therefore entirely eliminate the natural friction between ice and blade, even when a hollow grind is used.
It has been found that polishing tha already-ground ice-contacting surface of a skate blade will very significantly reduce the friction.
OSOECTS OF THE IN~ENTION
Accordingly, it is an important object of the present invention to provide an ice-skate blade polishing me~hod and maans adapted to effectively eliminate most of the friction between blade and ice which still OCCUP8 after conventional grinding.
It is another object of the present invention to provide a method and means of the character described, wh~ch can be simply combined with conventional ice-skats blade grinding equipment.
It is a corollorary object of the present invention to
- 2 -1~5~
provide an ice-skate ground and polished to provide thH potential for improved performance by ice-skate practitioners.
SUM~ARY OF THE INVENTION
The above and other objects and advantegee of the present invention are realized by providing an ice-skate in which the ice-contacting surface intermediate the two lateral sharp edges i8 polished to a mirror-finish. The equipm0nt used for obtaining such a skate includes a polishing element, made of semi-rigid and slightly absorbent material, being preferably in the form of a disc adapted to be mounted on a standard rotary grindar. The material to be used is preferably a felt compou~d.
The circum~erential edge of tha po1ishing element is adapted to polish the ice-contacting surface of an ice-skate blade.
It will be readily appreciated that this circumferential edge must be of a relatively small width, a lesser width than that of the blade, because polishing the sdges of the blade would affect their sharpness. This is because the stee1 of the blade is tempered and a certain amcunt of heat in the blade surface i9 produced by the polishing element.
Ths polishing element is of a relatively wide and uniform thickness. ~herefore, and because its po1ishing periphery must be narrower than th0 blade, width-reducing means are provided for the polishing element, consisting of a pair of braces adapted to be d0tachably secured together by a standard C-shape clamp applied to their respective exterior faces. Each brace also has a front inner face which is outwardly tapered~ thereby defining a V-ahaps elDngated s10t when the two braces are secured together. ~oth of thess front inner faces are overlaid with abrasive material, such as, for example, sand paper.
It will be obvious that the polishing element mounted on an ordinary rotary motor i8 to be inserted into the V-shape 810t while rotating. Thus, its peripheral portion will be thinned to the desired uidth and ready for polishing operation~.
llS~L~
It i9 to be noted that, in the case wherein the skate blade i9 hollow ground the edge of ths polishing element will, naturally, conform to tha concave contour of the blade.
The present invention also comprises a method of grinding and polishing the blade of an ice-skate comprised in the following 8 teps:
a) grinding the skate bladfl in the known manner, such procedurs usually including a fine grind to obtain the desirsd ~harp edge;
b) reducing the width o~ the felt-polishing element by thinning the latter in the width-reducilg means described above;
c) applying a first,coarse polishing past~ to the circumferential edge of the polishing element;
d) polishing the skate blade with the prepared polishing element of step c);
e) applying a second, fine polishing paste to the circumferential edge of the polishing element; and f) polishing the skat0 blade with the prepared polishing element of step e).
ORIEF DESCRIPTION OF THE ûRAWINGS
The above wiil be more clearly understood by having referral to the polishing means comprised in a preferred embodiment, and a polishing method, illustrated by way o~ the accompanying drawings, in which:
Figure 1 is a per~pective view of a portion of an ice-skate blade;
Figure 2 is a perspective view of a longitudinal section of the polishing element width-reducing braces;
Figure 3 is an elevational and partially cross-sectional view of the polishing element, also showing the width-reducing braces in cross-section; and Figure 4 is a cross-sectional view of the polishing element applied to on an ice-skate blade partially shown in cross-section.
Like numerals refer to lime element~ throughout the drawings.
ilS~
DETAILED DESCRIPTION OF_THE IN~ENTION
Referring to Figura 3, there i9 shown a pnlishing element 1, made of a felt material and having the form of a disc. Element 1 has a centar hole and is adapted to fit on the shaft 2 tlghtly sandwiched between washer~ 3 and hubs 4 ln known manner. Shaft 2 is drlven by an electric motor (not shown).
Figure 3 also depicts the width-reducing means 5 for polishing element 1. (The latter, as clearly ssen, is relatively thick and wider than the blade of a skate). The reducing means lû includss a pair of similar braces 6, both having an external trans-verse indented portion 6', the latter being adapted to receive a C-~hape clamp of which only the jaws 7 are ~hown. The rear portions of both braces 6 are rectangularly cut away at their inner face, as shown at 8~ such that, when they are set up, a rigid transverse rectangular spacer block member 9 can be inserted to provide a rigid and precise alignment of one brace relative to the other upon tightening of the C-shape clamp.
80th braces 6 also each have a front inner face 10 which extends angularly outwardly, quch that, when the bra?ss are secured together, they form an elongated ~-shape slot 11 extending to the front face of block 9.
A strip of abrasive material 12i such as sandpaper, is glued to each inner face 10. Thus, when polishing element, or belt disc l,:i~ lntroduced into slot 11 and rotatsd, its sides will rub against the abrasive material 12 therein and so assume a tapered shape culminating in a narrow circumferential polishing surfacs 1'.
Referring to Figures 1 and 4, there is shown a portion of a skate blade 13 in inverted position. ~lade 13 i8 specifically shown as being hollow ground, defining a concave surface 14 inter-mediate narrow side edge surface portions 15. Polishing elemen~
1, as seen in Figure 4, is adapted to polish the ice-contacting surface 14 of the blade along its length and between the two side edge surface portions 15 without touching the latter. For example, 115!~
lt the ~kate blade 13 has e wldth Or ll9 mlls (thousandths Or an inch), the perlpheral edge l' of pollshlng dlsc l should preferably have a width Or no more than llO mil~, thereby having a clearance of 4.5 mlls on ~ach slde of disc l to protect th0 edges 15 Or blsde 13 whlch have been prevlously ~harpened.
As explalned ebove, the two pastes, coarse and flne (nelther belng shown) are applled in successive steps to the clrcum~erentiol pollshlng eur~ace l~ Or element 15, to polish blade rigldly held ln a stsndard sharpenlng vlse.
The treated lce-sk2te has an lntermedlete ~urrsce 14 wlth a mirror-flnl~h while edges 15 retaln their sharpness. Ice-skster~ using the treated lce-skates Or the lnventlon can move on ice~at a much greater bpeed than with conventlonally-sharpened ice-skate~. The per-ormance of figure skaters, in p2rtlculsr, can be greatly lmproved.
The method and meano Or thls lnvention will pollsh both blades made Or chromesteel and ~teinless steel.
provide an ice-skate ground and polished to provide thH potential for improved performance by ice-skate practitioners.
SUM~ARY OF THE INVENTION
The above and other objects and advantegee of the present invention are realized by providing an ice-skate in which the ice-contacting surface intermediate the two lateral sharp edges i8 polished to a mirror-finish. The equipm0nt used for obtaining such a skate includes a polishing element, made of semi-rigid and slightly absorbent material, being preferably in the form of a disc adapted to be mounted on a standard rotary grindar. The material to be used is preferably a felt compou~d.
The circum~erential edge of tha po1ishing element is adapted to polish the ice-contacting surface of an ice-skate blade.
It will be readily appreciated that this circumferential edge must be of a relatively small width, a lesser width than that of the blade, because polishing the sdges of the blade would affect their sharpness. This is because the stee1 of the blade is tempered and a certain amcunt of heat in the blade surface i9 produced by the polishing element.
Ths polishing element is of a relatively wide and uniform thickness. ~herefore, and because its po1ishing periphery must be narrower than th0 blade, width-reducing means are provided for the polishing element, consisting of a pair of braces adapted to be d0tachably secured together by a standard C-shape clamp applied to their respective exterior faces. Each brace also has a front inner face which is outwardly tapered~ thereby defining a V-ahaps elDngated s10t when the two braces are secured together. ~oth of thess front inner faces are overlaid with abrasive material, such as, for example, sand paper.
It will be obvious that the polishing element mounted on an ordinary rotary motor i8 to be inserted into the V-shape 810t while rotating. Thus, its peripheral portion will be thinned to the desired uidth and ready for polishing operation~.
llS~L~
It i9 to be noted that, in the case wherein the skate blade i9 hollow ground the edge of ths polishing element will, naturally, conform to tha concave contour of the blade.
The present invention also comprises a method of grinding and polishing the blade of an ice-skate comprised in the following 8 teps:
a) grinding the skate bladfl in the known manner, such procedurs usually including a fine grind to obtain the desirsd ~harp edge;
b) reducing the width o~ the felt-polishing element by thinning the latter in the width-reducilg means described above;
c) applying a first,coarse polishing past~ to the circumferential edge of the polishing element;
d) polishing the skate blade with the prepared polishing element of step c);
e) applying a second, fine polishing paste to the circumferential edge of the polishing element; and f) polishing the skat0 blade with the prepared polishing element of step e).
ORIEF DESCRIPTION OF THE ûRAWINGS
The above wiil be more clearly understood by having referral to the polishing means comprised in a preferred embodiment, and a polishing method, illustrated by way o~ the accompanying drawings, in which:
Figure 1 is a per~pective view of a portion of an ice-skate blade;
Figure 2 is a perspective view of a longitudinal section of the polishing element width-reducing braces;
Figure 3 is an elevational and partially cross-sectional view of the polishing element, also showing the width-reducing braces in cross-section; and Figure 4 is a cross-sectional view of the polishing element applied to on an ice-skate blade partially shown in cross-section.
Like numerals refer to lime element~ throughout the drawings.
ilS~
DETAILED DESCRIPTION OF_THE IN~ENTION
Referring to Figura 3, there i9 shown a pnlishing element 1, made of a felt material and having the form of a disc. Element 1 has a centar hole and is adapted to fit on the shaft 2 tlghtly sandwiched between washer~ 3 and hubs 4 ln known manner. Shaft 2 is drlven by an electric motor (not shown).
Figure 3 also depicts the width-reducing means 5 for polishing element 1. (The latter, as clearly ssen, is relatively thick and wider than the blade of a skate). The reducing means lû includss a pair of similar braces 6, both having an external trans-verse indented portion 6', the latter being adapted to receive a C-~hape clamp of which only the jaws 7 are ~hown. The rear portions of both braces 6 are rectangularly cut away at their inner face, as shown at 8~ such that, when they are set up, a rigid transverse rectangular spacer block member 9 can be inserted to provide a rigid and precise alignment of one brace relative to the other upon tightening of the C-shape clamp.
80th braces 6 also each have a front inner face 10 which extends angularly outwardly, quch that, when the bra?ss are secured together, they form an elongated ~-shape slot 11 extending to the front face of block 9.
A strip of abrasive material 12i such as sandpaper, is glued to each inner face 10. Thus, when polishing element, or belt disc l,:i~ lntroduced into slot 11 and rotatsd, its sides will rub against the abrasive material 12 therein and so assume a tapered shape culminating in a narrow circumferential polishing surfacs 1'.
Referring to Figures 1 and 4, there is shown a portion of a skate blade 13 in inverted position. ~lade 13 i8 specifically shown as being hollow ground, defining a concave surface 14 inter-mediate narrow side edge surface portions 15. Polishing elemen~
1, as seen in Figure 4, is adapted to polish the ice-contacting surface 14 of the blade along its length and between the two side edge surface portions 15 without touching the latter. For example, 115!~
lt the ~kate blade 13 has e wldth Or ll9 mlls (thousandths Or an inch), the perlpheral edge l' of pollshlng dlsc l should preferably have a width Or no more than llO mil~, thereby having a clearance of 4.5 mlls on ~ach slde of disc l to protect th0 edges 15 Or blsde 13 whlch have been prevlously ~harpened.
As explalned ebove, the two pastes, coarse and flne (nelther belng shown) are applled in successive steps to the clrcum~erentiol pollshlng eur~ace l~ Or element 15, to polish blade rigldly held ln a stsndard sharpenlng vlse.
The treated lce-sk2te has an lntermedlete ~urrsce 14 wlth a mirror-flnl~h while edges 15 retaln their sharpness. Ice-skster~ using the treated lce-skates Or the lnventlon can move on ice~at a much greater bpeed than with conventlonally-sharpened ice-skate~. The per-ormance of figure skaters, in p2rtlculsr, can be greatly lmproved.
The method and meano Or thls lnvention will pollsh both blades made Or chromesteel and ~teinless steel.
Claims (6)
PROPERTY OR PRIVILEGE IS CLAIMED, ARE DEFINED AS FOLLOWS:
1. An ice-skate blade having an ice-engaging edge surface including a central surface portion intermediate side edge surface portions, said side edge surface portions being sharpened and said intermediate surface portion being polished to a mirror-finish.
2. An ice-skate as claimed in claim 1, wherein said central surface portion has a concave cross-sectional shape.
3. An ice-skate as claimed in claim 1, wherein said central surface portion is transversely flat.
4. A method of treating the ice-engaging surface of an ice-skate blade comprising polishing to substantially a mirror-finish the portion of said ice-engaging surface which is intermediate the sharpened side edges of said ice-engaging surface.
5. A method of treating the ground-engaging surface portion of an ice-blade comprising first grinding said surface with grinding material, so as to obtain sharpened edge portions and then polishing to a mirror-finish the surface portion inter-mediate said sharpened edge portions.
6. A method as claimed in claim 4, wherein said polishing step is carried out in two successive stages: first by using a relatively coarse grain polishing compound; and second by using a finer grain polishing compound.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA000424443A CA1159484A (en) | 1983-03-24 | 1983-03-24 | Ice-skate blade polishing method and means |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA000424443A CA1159484A (en) | 1983-03-24 | 1983-03-24 | Ice-skate blade polishing method and means |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1159484A true CA1159484A (en) | 1983-12-27 |
Family
ID=4124863
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000424443A Expired CA1159484A (en) | 1983-03-24 | 1983-03-24 | Ice-skate blade polishing method and means |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA1159484A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1993025349A1 (en) * | 1992-06-16 | 1993-12-23 | Allen Robert H | Method and tool for finishing of sharpened skate blades |
| US5345688A (en) * | 1993-05-26 | 1994-09-13 | Allen Robert H | Method and device for measuring squareness of ice skate blades |
| RU2518027C1 (en) * | 2013-01-25 | 2014-06-10 | Михаил Васильевич Федоров | Method of sharpening skate blades |
| WO2017134458A1 (en) | 2016-02-05 | 2017-08-10 | Jrc Innovation Limited | Polishing apparatus |
-
1983
- 1983-03-24 CA CA000424443A patent/CA1159484A/en not_active Expired
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1993025349A1 (en) * | 1992-06-16 | 1993-12-23 | Allen Robert H | Method and tool for finishing of sharpened skate blades |
| US5345688A (en) * | 1993-05-26 | 1994-09-13 | Allen Robert H | Method and device for measuring squareness of ice skate blades |
| RU2518027C1 (en) * | 2013-01-25 | 2014-06-10 | Михаил Васильевич Федоров | Method of sharpening skate blades |
| WO2017134458A1 (en) | 2016-02-05 | 2017-08-10 | Jrc Innovation Limited | Polishing apparatus |
| EP3954501A1 (en) | 2016-02-05 | 2022-02-16 | JRC Innovation Limited | Polishing apparatus |
| US11369857B2 (en) | 2016-02-05 | 2022-06-28 | Jrc Innovation Limited | Polishing apparatus |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry |