CA1273800A - Curling stone sharpening device - Google Patents
Curling stone sharpening deviceInfo
- Publication number
- CA1273800A CA1273800A CA000555643A CA555643A CA1273800A CA 1273800 A CA1273800 A CA 1273800A CA 000555643 A CA000555643 A CA 000555643A CA 555643 A CA555643 A CA 555643A CA 1273800 A CA1273800 A CA 1273800A
- Authority
- CA
- Canada
- Prior art keywords
- head
- support frame
- cam
- sharpening
- curling stone
- 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
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B19/00—Single-purpose machines or devices for particular grinding operations not covered by any other main group
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
Abstract
CURLING STONE SHARPENING DEVICE
ABSTRACT OF THE DISCLOSURE
Curling stone sharpeners such as disclosed in Canadian Patent 830,726 dated December 30, 1969 include limitations relative to adjustments, type of cutting wheel and means to follow the correct curvature of the sole portion which in that particular patent, is manually operated. The improvements of the present invention include a diamond wheel mounted for rotation and having a cam follower on the support for the cutting wheel, said follower engaging an adjustable cam so that the minimum amount of granite is removed from the stone when sharpening same thus maintaining the weight of the stone as close as possible to the original weight.
ABSTRACT OF THE DISCLOSURE
Curling stone sharpeners such as disclosed in Canadian Patent 830,726 dated December 30, 1969 include limitations relative to adjustments, type of cutting wheel and means to follow the correct curvature of the sole portion which in that particular patent, is manually operated. The improvements of the present invention include a diamond wheel mounted for rotation and having a cam follower on the support for the cutting wheel, said follower engaging an adjustable cam so that the minimum amount of granite is removed from the stone when sharpening same thus maintaining the weight of the stone as close as possible to the original weight.
Description
~1273800 CURLING STON~ SHARPENING DEVICE
BACKGROUND OF THE INVENTION
This invention relates to new and useful improvements in grinding assemblies for curling rocks such as disclosed in my Canadian Patent No. 830,726 issued December 30, 1969 and entitled "Curling Rock Sharpener".
Conventional curling rocks are made either from relatively close grained hard granite or from knotty granite (soft and hard textures) and a sliding sole or perimetrical surface is formed on the upper and lower surfaces of the rocks to facilitate the movement of same down the ice. It is usual to turn rocks over after three or four years of use as the sole becomes worn and the action of the rock deteriorates.
After both sides have been worn, it is then necessary to sharpen the rocks to return the ice-contacting sole area to the original specifications.
Due to the extreme hardness of the rocks, this is a difficult and time-consuming operation, particularly in view of the relatively close tolerances required to grind the ice-contacting sole.
The device hereinafter to be described enables ~J!~`~
, . , ' , ' ~ .
1~73800 a curling rock to have the sole area returned to original specifications readily and easily, the adjustments on the machine enabling the cur~ed areas to be ground easily and accurately.
In accordance with the invention there is pro-vided, in a curling stone sharpener which includes a curling stone sharpening device which includes a support frame, a sharpening wheel journalled for r~tation by a source of power within a head and mounted upon said frame, a curling stone support table rotatable by a source of power and also mounted on said support frame, the improvements comprising (a) a cam mounted on said support frame adjacent said head, (b) a cam follower mounted on said head and adapted to engage said cam thereby controlling the engagement and contour followed by said sharpening wheel upon the sole of the associated curling stone.
A further aspect of the invention consists of the combination with a curling stone sharpener which includes a support frame, a sharpening wheel journalled for rotation by a source of power within a head and mounted upon said frame, a curling stone support table rotatable by a source of power and also mounted on said '. - ' ~Z'73800 support frame, a cam mounted on said support frame adja-cent said head and a cam follower mounted on said head and adapted to engage said cam thereby controlling the engagement and contour ~ollowed by said sharpening wheel upon the sole of the associated curling stone.
Another advantage of the invention is the com-plete flexibility of adjustments provided both as to speed of operation and the provision of the cam and cam follower which, after adjustment, permits the accurate traverse of the grinding wheel following the correct curvature and removing the minimum amount of granite required in order to return the rock to its original specifications with the minimum of weight loss occur-ring.
Still another advantage of the invention is to provide a device which is simple in construction, econo-mical in manufacture and otherwise well suited to the purpose for which it is designed.
Wlth the foregolng ln vlew, and other advan-tages as will become apparent to those skilled ln the art to which this invention relates as this specification proceeds, the invention is herein described by reference to the accompanying drawings forming a part hereof, which includes a description of the best mode known to the ' -:
i273800 applicant and of the preferred typical embodiment of the principles of the present invention, in which:
DESCRIPTION OF THE DRAWINGS
Figure 1 is a front elevation of the device.
Figure 2 is an enlarged fragmentary view show-ing the adjustment of the cam relative to the support frame.
Figure 3 is a top plan view of Figure 1.
Figure 4 is a front elevation of Figure 1.
In the drawings like characters of reference indicate corresponding parts in the different figures.
DETAILED DESCRIPTION
Proceeding therefore to describe the invention in detail, reference character 10 illustrates generally, a supporting frame which is preferably in the form of an enclosing cabinet having a planar upper surface 11.
A circular aperture 12 is formed in this upper surface and a curling rock holding table 13 is situated within this aperture. The table is secured to a vertical shaft 14 journalled within heavy-duty bearings 15 which in turn are supported by supporting structure 16 within the support frame 10.
A pulley 1~ is engaged by an endless belt 18 which in turn surrounds a further pulley 19 mounted on . ~
~2~3800 stub shaft 20 supported in bearings 21. Pulley 22 ls also secured to stub shaft 20 and a further endless belt 23 extends around this pulley and around pulley 24 which is connected to the drive shaft 24A of a source of power taking the form an an electric motor 25 mounted within the support frame. This is preferably a two-speed motor capable of rotating the table at a low speed while the rock is being ground, and at a high speed when final polishing is taking place.
This motor therefore rotates the table 13 which is provided with a perimetrical rim 26 upon the upper surface thereof to receive a curling rock 27, it being understood that the conventional handle and shank of the curling rock has been removed prior to the grinding or sharpening operation.
Three supports 28 extend upwardly from the table around the periphery thereof and screw-threaded bolts and clamps 29 extend through the support and con-tact the perimetrical wall 30 of the curling rock so that by adiusting these bolts 29, the rock may be mounted con-centrically upon the table 13 and clamped securely in position.
Reference to Figure 1 will also show a further pulley 31 secured to the drive shaft 24A of the motor 25 iZ73800 around which belt 32 extends, said belt also extending around a pulley 33 operatively connected to a water pump 34 secured within the support frame 10.
A water reservoir 35 is situated within the cabinet or support frame and pump intake 36 extends into this reservoir. water is pumped under pressure through a conduit 37 extending through the planar top 11 and terminating adjacent the grinding area of the curling stone indicated by reference character 38.
The water supplies lubrication and cooling for the grindlng or sharpening operation, surplus water flow-ing over the rock and between the table and surface 11 through aperture 13 and into a sma.ll water reservoir 39 situated below the planar surface 11. A return conduit 40 extends from this reservoir to the tank or main reser-voir 35. This structure is substantially similar to that shown in the above identified Canadian patent.
A grindlng head collectively designated 41 is provided and is mounted adjacent the rear end thereof upon a support 42 by means of pivot 43 at the upper end thereof and by pivot 44 to the support frame 10 as clear-ly shown in Figure 1.
Linkage collectively designated 44 supports the head adjacent the front end 45 thereof and this linkage : . i .
.
, ' - : :
~:~73800 includes a bell crank 46 pivoted to the support frame intermediate the ends thereof by pivot 47.
A pivot 48 adjacent the upper end of the bell crank connects a link 49 which in turn is pivotally con-nected by pivot 50, to a mount 51 adjacent the front end 45 of the head.
The lower end portion 52 of the bell crank is provided with a clevis which engages a screw nut 53, said screw nut being screw-threadably engageable over a threaded rod 54 supported within the frame and driven by means of an electric motor 55. This motor is a gear reduced reverseable motor controlled by the operator and rotates shaft 54 to raise and lower the head around pivot 43.
A diamond cutter stone 56 is journalled for rotation by means of a transverse arbor 57 mounted upon the front end 45 of head 41 and a shield 58 covers the upper portion of this diamond cutter wheel for safety purposes, it being understood that the cutter wheel rotates in a vertical plane.
A pulley 59 is secured to the arbor and an end-less belt 60 extends around this pulley and around pulley 61 secured to the drive shaft of an electric motor 62 operatively mounted to the rear end of the head 41. This ' .
~Z73800 motor 61 is a two-speed motor having a relatively low operating speed and a relatively high operating speed.
The low operating speed is used for the grinding of the sole of the curling stone as will hereinafter be describ-ed and the high speed is used for finishing and polishing purposes.
The advantage of the diamond wheel over the grinding elements illustrates and described in the above Canadian patent include more versatility as to sharpening or cutting different shapes of curling stones as well as being capable of cutting more accurately on the soft to hard textures in knotty granite as opposed to the grain type of granite. With the head used in the above men-tioned patent, grinding wheels had to be used with dif-ferent textures of grit and bond as to hardness, open or closed etc. and it was time consuming not only to change the grlnding wheels but difficult to select the correct wheel for the particular operation being performed. The present diamond wheel will perform more readily on all the textures of granite.
Also mounted on one side of the head ad~acent the front thereof is a cam follower 63 engageable upon an arcuately curved cam block 78 and shown in detail in Figure 2.
," . . -' ' ~, . - . - - . - .
.
,~
. . - - . .
- - .
, - . ' , ,. .~ , , ~273800 g A relatively heavy-duty shaft 65 is supported within a bearing 66 within support frame 10 and extends substantially vertically being pivotally secured by pivot 67 at the lower end thereof, to a horizontal link 68.
One end of this link 68 is pivotally secured by pivot 69 to a front support 70 which is initially adjust-able by means of the screwed end 71 engaging through a fixed nut 72.
The other end 73 includes a screw nut 74 through which a threaded rod 75 extends upwardly towards the rear side of the cabinet being supported within plate 76 and rotatable by means of hand wheel 77.
This enables the shaft 65 to be moved upwardly and downwardly together with a cam assembly including a cam block 78 secured to the upper end 79 thereof.
An arcuately curved adjustable cam portion or plate 64 is pivotally secured by the front end thereof by pivot 80 to one side of the cam block 78 and is provided with an adjusting screw 81 adjacent the rear end thereof which screw-threadably engages through a screw plate 82 secured to the cam ad;acent the rear end 83 thereof. The upper edges of the block 78 and plate 64 constitute cam profiles and are adjustable relative to one another to define the profile of the sole area of the rock so that iZ73800 the minimum amount of granite is removed.
This is also supported within a support plate 84 on the support 78 and is rotatable by means of hand wheel 85. This rotation raises or lowers the rear end of the cam plate 64 in an arc around pivot 80 and this together with the basic ad;ustment of shaft 79 permits the cam block 78 and cam plate 64 to assume the correct attitude to control the head as it move back and forth across the sole area of the curling stone being sharpen-ed. The upturned end profile portion 78A of the cam block 78 is for shaping the cup portion of the curling stone in relation to the sole because the inside angle of the edge of the sole is important.
In operation, the curling stone is mounted upon the table 13 and clamped in concentrical relationship thereto by means of clamp screws 29. The table is rotat-ed by the source of power or electric motor 25.
The cam plate 64 is adjusted by means of adjustment wheel 85, to the correct relationship and the cam block 78 is also ad~usted vertically by means of hand wheel 77 so that the grinding wheel is in the correct relationship to the sole of the stone being sharpened.
The weight of the head 41 together with the linkage 44 causes the cam follower 63 to contact the cam .
.
, ' .
plate 64 and upper profile of cam block 78 assisted by a tension spring 86 extending between the cam block 78 via off-standing lug 87, and the support frame as indicated by reference character 88.
The degree of contact of the stone with the sole is of course controlled by the height of the cam block 78 and plate 64 via shaft 65 and linkage 68 operat-ed by hand wheel 77.
The motor 55 is manually operated by means of switches (not illustrated) at the re~uired speed and the direction thereof is reverseable thus causing the grind-ing wheel 56 to traverse over the area of the sole being sharpened or ground as the stone 27 is rotated at a low speed by means of motor 25 with the water pumped from the reservoir by pump 34, supplying lubrication and cooling and washing away the residue of the rock being ground.
once the rock is ground, it may be polished by increasing the speed of the motor 25 for polishing pur-poses.
Since various modifications can be made in my invention as hereinabove described, and many apparently widely different embodiments of same made within the spirit and scope of the claims without departing from such spirit and scope, it is intended that all matter ". '. - " ~ ' ', : .
~Z73800 contained in the accompanying specification shall be interpreted as illustrative only and not in a limiting sense.
: ' --.
BACKGROUND OF THE INVENTION
This invention relates to new and useful improvements in grinding assemblies for curling rocks such as disclosed in my Canadian Patent No. 830,726 issued December 30, 1969 and entitled "Curling Rock Sharpener".
Conventional curling rocks are made either from relatively close grained hard granite or from knotty granite (soft and hard textures) and a sliding sole or perimetrical surface is formed on the upper and lower surfaces of the rocks to facilitate the movement of same down the ice. It is usual to turn rocks over after three or four years of use as the sole becomes worn and the action of the rock deteriorates.
After both sides have been worn, it is then necessary to sharpen the rocks to return the ice-contacting sole area to the original specifications.
Due to the extreme hardness of the rocks, this is a difficult and time-consuming operation, particularly in view of the relatively close tolerances required to grind the ice-contacting sole.
The device hereinafter to be described enables ~J!~`~
, . , ' , ' ~ .
1~73800 a curling rock to have the sole area returned to original specifications readily and easily, the adjustments on the machine enabling the cur~ed areas to be ground easily and accurately.
In accordance with the invention there is pro-vided, in a curling stone sharpener which includes a curling stone sharpening device which includes a support frame, a sharpening wheel journalled for r~tation by a source of power within a head and mounted upon said frame, a curling stone support table rotatable by a source of power and also mounted on said support frame, the improvements comprising (a) a cam mounted on said support frame adjacent said head, (b) a cam follower mounted on said head and adapted to engage said cam thereby controlling the engagement and contour followed by said sharpening wheel upon the sole of the associated curling stone.
A further aspect of the invention consists of the combination with a curling stone sharpener which includes a support frame, a sharpening wheel journalled for rotation by a source of power within a head and mounted upon said frame, a curling stone support table rotatable by a source of power and also mounted on said '. - ' ~Z'73800 support frame, a cam mounted on said support frame adja-cent said head and a cam follower mounted on said head and adapted to engage said cam thereby controlling the engagement and contour ~ollowed by said sharpening wheel upon the sole of the associated curling stone.
Another advantage of the invention is the com-plete flexibility of adjustments provided both as to speed of operation and the provision of the cam and cam follower which, after adjustment, permits the accurate traverse of the grinding wheel following the correct curvature and removing the minimum amount of granite required in order to return the rock to its original specifications with the minimum of weight loss occur-ring.
Still another advantage of the invention is to provide a device which is simple in construction, econo-mical in manufacture and otherwise well suited to the purpose for which it is designed.
Wlth the foregolng ln vlew, and other advan-tages as will become apparent to those skilled ln the art to which this invention relates as this specification proceeds, the invention is herein described by reference to the accompanying drawings forming a part hereof, which includes a description of the best mode known to the ' -:
i273800 applicant and of the preferred typical embodiment of the principles of the present invention, in which:
DESCRIPTION OF THE DRAWINGS
Figure 1 is a front elevation of the device.
Figure 2 is an enlarged fragmentary view show-ing the adjustment of the cam relative to the support frame.
Figure 3 is a top plan view of Figure 1.
Figure 4 is a front elevation of Figure 1.
In the drawings like characters of reference indicate corresponding parts in the different figures.
DETAILED DESCRIPTION
Proceeding therefore to describe the invention in detail, reference character 10 illustrates generally, a supporting frame which is preferably in the form of an enclosing cabinet having a planar upper surface 11.
A circular aperture 12 is formed in this upper surface and a curling rock holding table 13 is situated within this aperture. The table is secured to a vertical shaft 14 journalled within heavy-duty bearings 15 which in turn are supported by supporting structure 16 within the support frame 10.
A pulley 1~ is engaged by an endless belt 18 which in turn surrounds a further pulley 19 mounted on . ~
~2~3800 stub shaft 20 supported in bearings 21. Pulley 22 ls also secured to stub shaft 20 and a further endless belt 23 extends around this pulley and around pulley 24 which is connected to the drive shaft 24A of a source of power taking the form an an electric motor 25 mounted within the support frame. This is preferably a two-speed motor capable of rotating the table at a low speed while the rock is being ground, and at a high speed when final polishing is taking place.
This motor therefore rotates the table 13 which is provided with a perimetrical rim 26 upon the upper surface thereof to receive a curling rock 27, it being understood that the conventional handle and shank of the curling rock has been removed prior to the grinding or sharpening operation.
Three supports 28 extend upwardly from the table around the periphery thereof and screw-threaded bolts and clamps 29 extend through the support and con-tact the perimetrical wall 30 of the curling rock so that by adiusting these bolts 29, the rock may be mounted con-centrically upon the table 13 and clamped securely in position.
Reference to Figure 1 will also show a further pulley 31 secured to the drive shaft 24A of the motor 25 iZ73800 around which belt 32 extends, said belt also extending around a pulley 33 operatively connected to a water pump 34 secured within the support frame 10.
A water reservoir 35 is situated within the cabinet or support frame and pump intake 36 extends into this reservoir. water is pumped under pressure through a conduit 37 extending through the planar top 11 and terminating adjacent the grinding area of the curling stone indicated by reference character 38.
The water supplies lubrication and cooling for the grindlng or sharpening operation, surplus water flow-ing over the rock and between the table and surface 11 through aperture 13 and into a sma.ll water reservoir 39 situated below the planar surface 11. A return conduit 40 extends from this reservoir to the tank or main reser-voir 35. This structure is substantially similar to that shown in the above identified Canadian patent.
A grindlng head collectively designated 41 is provided and is mounted adjacent the rear end thereof upon a support 42 by means of pivot 43 at the upper end thereof and by pivot 44 to the support frame 10 as clear-ly shown in Figure 1.
Linkage collectively designated 44 supports the head adjacent the front end 45 thereof and this linkage : . i .
.
, ' - : :
~:~73800 includes a bell crank 46 pivoted to the support frame intermediate the ends thereof by pivot 47.
A pivot 48 adjacent the upper end of the bell crank connects a link 49 which in turn is pivotally con-nected by pivot 50, to a mount 51 adjacent the front end 45 of the head.
The lower end portion 52 of the bell crank is provided with a clevis which engages a screw nut 53, said screw nut being screw-threadably engageable over a threaded rod 54 supported within the frame and driven by means of an electric motor 55. This motor is a gear reduced reverseable motor controlled by the operator and rotates shaft 54 to raise and lower the head around pivot 43.
A diamond cutter stone 56 is journalled for rotation by means of a transverse arbor 57 mounted upon the front end 45 of head 41 and a shield 58 covers the upper portion of this diamond cutter wheel for safety purposes, it being understood that the cutter wheel rotates in a vertical plane.
A pulley 59 is secured to the arbor and an end-less belt 60 extends around this pulley and around pulley 61 secured to the drive shaft of an electric motor 62 operatively mounted to the rear end of the head 41. This ' .
~Z73800 motor 61 is a two-speed motor having a relatively low operating speed and a relatively high operating speed.
The low operating speed is used for the grinding of the sole of the curling stone as will hereinafter be describ-ed and the high speed is used for finishing and polishing purposes.
The advantage of the diamond wheel over the grinding elements illustrates and described in the above Canadian patent include more versatility as to sharpening or cutting different shapes of curling stones as well as being capable of cutting more accurately on the soft to hard textures in knotty granite as opposed to the grain type of granite. With the head used in the above men-tioned patent, grinding wheels had to be used with dif-ferent textures of grit and bond as to hardness, open or closed etc. and it was time consuming not only to change the grlnding wheels but difficult to select the correct wheel for the particular operation being performed. The present diamond wheel will perform more readily on all the textures of granite.
Also mounted on one side of the head ad~acent the front thereof is a cam follower 63 engageable upon an arcuately curved cam block 78 and shown in detail in Figure 2.
," . . -' ' ~, . - . - - . - .
.
,~
. . - - . .
- - .
, - . ' , ,. .~ , , ~273800 g A relatively heavy-duty shaft 65 is supported within a bearing 66 within support frame 10 and extends substantially vertically being pivotally secured by pivot 67 at the lower end thereof, to a horizontal link 68.
One end of this link 68 is pivotally secured by pivot 69 to a front support 70 which is initially adjust-able by means of the screwed end 71 engaging through a fixed nut 72.
The other end 73 includes a screw nut 74 through which a threaded rod 75 extends upwardly towards the rear side of the cabinet being supported within plate 76 and rotatable by means of hand wheel 77.
This enables the shaft 65 to be moved upwardly and downwardly together with a cam assembly including a cam block 78 secured to the upper end 79 thereof.
An arcuately curved adjustable cam portion or plate 64 is pivotally secured by the front end thereof by pivot 80 to one side of the cam block 78 and is provided with an adjusting screw 81 adjacent the rear end thereof which screw-threadably engages through a screw plate 82 secured to the cam ad;acent the rear end 83 thereof. The upper edges of the block 78 and plate 64 constitute cam profiles and are adjustable relative to one another to define the profile of the sole area of the rock so that iZ73800 the minimum amount of granite is removed.
This is also supported within a support plate 84 on the support 78 and is rotatable by means of hand wheel 85. This rotation raises or lowers the rear end of the cam plate 64 in an arc around pivot 80 and this together with the basic ad;ustment of shaft 79 permits the cam block 78 and cam plate 64 to assume the correct attitude to control the head as it move back and forth across the sole area of the curling stone being sharpen-ed. The upturned end profile portion 78A of the cam block 78 is for shaping the cup portion of the curling stone in relation to the sole because the inside angle of the edge of the sole is important.
In operation, the curling stone is mounted upon the table 13 and clamped in concentrical relationship thereto by means of clamp screws 29. The table is rotat-ed by the source of power or electric motor 25.
The cam plate 64 is adjusted by means of adjustment wheel 85, to the correct relationship and the cam block 78 is also ad~usted vertically by means of hand wheel 77 so that the grinding wheel is in the correct relationship to the sole of the stone being sharpened.
The weight of the head 41 together with the linkage 44 causes the cam follower 63 to contact the cam .
.
, ' .
plate 64 and upper profile of cam block 78 assisted by a tension spring 86 extending between the cam block 78 via off-standing lug 87, and the support frame as indicated by reference character 88.
The degree of contact of the stone with the sole is of course controlled by the height of the cam block 78 and plate 64 via shaft 65 and linkage 68 operat-ed by hand wheel 77.
The motor 55 is manually operated by means of switches (not illustrated) at the re~uired speed and the direction thereof is reverseable thus causing the grind-ing wheel 56 to traverse over the area of the sole being sharpened or ground as the stone 27 is rotated at a low speed by means of motor 25 with the water pumped from the reservoir by pump 34, supplying lubrication and cooling and washing away the residue of the rock being ground.
once the rock is ground, it may be polished by increasing the speed of the motor 25 for polishing pur-poses.
Since various modifications can be made in my invention as hereinabove described, and many apparently widely different embodiments of same made within the spirit and scope of the claims without departing from such spirit and scope, it is intended that all matter ". '. - " ~ ' ', : .
~Z73800 contained in the accompanying specification shall be interpreted as illustrative only and not in a limiting sense.
: ' --.
Claims
(1) In a curling stone sharpening device which includes a support frame, a sharpening wheel journalled for rotation by a source of power within a head and mounted upon said frame, a curling stone support table rotatable by a source of power and also mounted on said support frame, the improvements comprising (a) a cam assembly mounted on said support frame adjacent said head, said cam assembly including a cam block and a cam plate adjustably mounted thereon, (b) a cam follower mounted on said head and adapted to engage said cam assembly thereby controll-ing the engagement and contour followed by said sharpen-ing wheel upon the sole of the associated curling stone.
(2) The device according to Claim 1 which includes means to adjust said cam plate relative to said cam block, in a vertical arc around a pivot adjacent one end thereof for controlling the arc travelled by said cam follower and hence by said sharpening wheel.
(3) The device according to Claim 1 which includes means to raise and lower said cam assembly sub-stantially vertically relative to said head thereby controlling the depth of cut of said sharpening wheel upon the sole of the associated curling stone.
(4) The device according to Claim 2 which includes means to raise and lower said cam assembly sub-stantially vertically relative to said head thereby controlling the depth of cut of said sharpening wheel upon the sole of the associated curling stone.
(5) The device according to Claim 1 which includes means to mount said head whereby said head is moveable from an operating position to a non-operating raised position and vice versa.
(6) The device according to Claim 5 in which said last mentioned means includes a pivot lever extend-ing between said support frame and the rear end of said head and linkage pivotally extending between adjacent the front of said head and said support frame, said linkage including a crank arm pivoted intermediate the ends thereof to said support frame and means to pivot said crank arm, said last mentioned means including a variable speed, reverseable source of power mounted in said sup-port frame.
(7) The device according to Claim 1 which includes means in said support frame to rotate said sup-port table, said means including a two-speed source of power which includes a relatively low speed for said sharpening operation and a relatively high speed for polishing purposes after said sharpening operation is completed.
(8) In combination with a curling stone sharpener which includes a support frame, a sharpening wheel journalled for rotation by a source of power within a head and mounted upon said frame, a curling stone sup-port table rotatable by a source of power and also mount-ed on said support frame, a cam assembly mounted on said support frame adjacent said head and a cam follower mounted on said head and adapted to engage said cam assembly thereby controlling the engagement and contour followed by said sharpening wheel upon the sole of the associated curling stone, SAiD cam assembly including a cam block and a cam plate secured thereto.
(9) The device according to Claim 8 which includes means to adjust said cam plate relative to said cam block, in a vertical arc around a pivot adjacent one end thereof for controlling the arc traveled by said cam follower and hence by said sharpening wheel.
(10) The device according to Claim 8 which includes means to raise and lower said cam assembly sub-stantially vertically relative to said head thereby controlling the depth of cut of said sharpening wheel upon the sole of the associated curling stone.
(11) The device according to Claim 9 which includes means to raise and lower said cam assembly sub-tantially vertically relative to said head thereby controlling the depth of cut of said sharpening wheel upon the sole of the associated curling stone.
(12) The device according to Claim 8 which includes means to mount said head whereby said head is moveable from an operating position to a non-operating raised position and vice versa.
(13) The device according to Claim 12 in which said last mentioned means includes a pivot lever extend-ing between said support frame and the rear end of said head and linkage pivotally extending between adjacent the front of said head and said support frame, said linkage including a crank arm pivoted intermediate the ends thereof to said support frame and means to pivot said crank arm, said last mentioned means including a variable speed, reveresable source of power mounted in said support frame.
(14) The device according to Claim 8 which includes means in said support frame to rotate said sup-port table, said means including a two-speed source of power which includes a relatively low speed for said sharpening operation and a relatively high speed for polishing purposes after said sharpening operation is completed.
(2) The device according to Claim 1 which includes means to adjust said cam plate relative to said cam block, in a vertical arc around a pivot adjacent one end thereof for controlling the arc travelled by said cam follower and hence by said sharpening wheel.
(3) The device according to Claim 1 which includes means to raise and lower said cam assembly sub-stantially vertically relative to said head thereby controlling the depth of cut of said sharpening wheel upon the sole of the associated curling stone.
(4) The device according to Claim 2 which includes means to raise and lower said cam assembly sub-stantially vertically relative to said head thereby controlling the depth of cut of said sharpening wheel upon the sole of the associated curling stone.
(5) The device according to Claim 1 which includes means to mount said head whereby said head is moveable from an operating position to a non-operating raised position and vice versa.
(6) The device according to Claim 5 in which said last mentioned means includes a pivot lever extend-ing between said support frame and the rear end of said head and linkage pivotally extending between adjacent the front of said head and said support frame, said linkage including a crank arm pivoted intermediate the ends thereof to said support frame and means to pivot said crank arm, said last mentioned means including a variable speed, reverseable source of power mounted in said sup-port frame.
(7) The device according to Claim 1 which includes means in said support frame to rotate said sup-port table, said means including a two-speed source of power which includes a relatively low speed for said sharpening operation and a relatively high speed for polishing purposes after said sharpening operation is completed.
(8) In combination with a curling stone sharpener which includes a support frame, a sharpening wheel journalled for rotation by a source of power within a head and mounted upon said frame, a curling stone sup-port table rotatable by a source of power and also mount-ed on said support frame, a cam assembly mounted on said support frame adjacent said head and a cam follower mounted on said head and adapted to engage said cam assembly thereby controlling the engagement and contour followed by said sharpening wheel upon the sole of the associated curling stone, SAiD cam assembly including a cam block and a cam plate secured thereto.
(9) The device according to Claim 8 which includes means to adjust said cam plate relative to said cam block, in a vertical arc around a pivot adjacent one end thereof for controlling the arc traveled by said cam follower and hence by said sharpening wheel.
(10) The device according to Claim 8 which includes means to raise and lower said cam assembly sub-stantially vertically relative to said head thereby controlling the depth of cut of said sharpening wheel upon the sole of the associated curling stone.
(11) The device according to Claim 9 which includes means to raise and lower said cam assembly sub-tantially vertically relative to said head thereby controlling the depth of cut of said sharpening wheel upon the sole of the associated curling stone.
(12) The device according to Claim 8 which includes means to mount said head whereby said head is moveable from an operating position to a non-operating raised position and vice versa.
(13) The device according to Claim 12 in which said last mentioned means includes a pivot lever extend-ing between said support frame and the rear end of said head and linkage pivotally extending between adjacent the front of said head and said support frame, said linkage including a crank arm pivoted intermediate the ends thereof to said support frame and means to pivot said crank arm, said last mentioned means including a variable speed, reveresable source of power mounted in said support frame.
(14) The device according to Claim 8 which includes means in said support frame to rotate said sup-port table, said means including a two-speed source of power which includes a relatively low speed for said sharpening operation and a relatively high speed for polishing purposes after said sharpening operation is completed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA000555643A CA1273800A (en) | 1987-12-30 | 1987-12-30 | Curling stone sharpening device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA000555643A CA1273800A (en) | 1987-12-30 | 1987-12-30 | Curling stone sharpening device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1273800A true CA1273800A (en) | 1990-09-11 |
Family
ID=4137173
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000555643A Expired CA1273800A (en) | 1987-12-30 | 1987-12-30 | Curling stone sharpening device |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA1273800A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110539232A (en) * | 2019-09-11 | 2019-12-06 | 安徽科信矿山机械制造有限公司 | Grinding device for ore processing |
-
1987
- 1987-12-30 CA CA000555643A patent/CA1273800A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110539232A (en) * | 2019-09-11 | 2019-12-06 | 安徽科信矿山机械制造有限公司 | Grinding device for ore processing |
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| Date | Code | Title | Description |
|---|---|---|---|
| MKLA | Lapsed |