Saw tooth setter
View Patent ↗A saw tooth setter has a carriage within a housing. A carriage base has a channel which narrows from a first end to a second end. A wedge protrudes up from the base in the channel. Mechanical linkage translates movement of an actuator into forward and backward movement of the carriage. A second mechanical linkage translates movement of the carriage to forward and backward movement of a blade feeding arrangement. A setting mechanism has a set of opposing plates which extend through and are hingedly attached to the top cover. The first end of each plate is seated in the channel. The second end of each plate has sets the tooth. Upon forward movement of the carriage the first end of the plates enter the first end of the channel and are separated by the wedge, and the second end of the plates come together to set the teeth.
1. A tooth setter for setting a tooth of a saw blade, the tooth setter comprising:
a housing comprising a top cover;
a carriage within the housing and comprising a base and upstanding sidewalls that define a channel, the channel narrowing in width from a first end to a second end thereof, and a wedge protruding up from the base between the sidewalls in the first end of the channel, the carriage arranged for a forward movement and a backward movement wherein forward is movement in a direction from the first end to the second end and backward is movement in a direction from the second end to the first end;
a first mechanical linkage configured to translate movement of an actuator into the forward movement and the backward movement of the carriage;
a second mechanical linkage configured to translate the forward movement and the backward movement of the carriage to a forward movement and a backward movement of a blade feeding arrangement; and
a setting mechanism, the setting mechanism comprising a first plate and an opposing second plate, each plate comprising a first end and a second end, the first plate and the second plate extend through and are hingedly attached to the top cover, the first end of each plate is seated in the channel, and the second end of each plate comprising a setting finger extending outward from an inner face of the first plate toward the opposing second plate;
whereby upon the forward movement of the carriage by the first mechanical linkage, the first end of the plates enter the first end of the channel and are separated by the wedge, and the second end of the plates come together into a setting position.
2. The tooth setter of claim 1 , wherein the first mechanical linkage comprises:
the actuator;
a crankshaft connected at a first end thereof to the actuator;
a drive wheel connected to a second end of the crankshaft; and
a first link arm, a first end of the first link arm rotatably connected along a radius of the drive wheel, and a second end of the first link arm connected to the carriage.
3. The tooth setter of claim 1 , wherein the second mechanical linkage comprises:
a second link arm, a first end of the second link arm has a connection to the carriage; and
a feed lever, a first end of the feed lever connected to a second end of the second link arm, the feed lever extending through and hingedly attached to the top cover;
whereby movement of the second link arm in one direction moves a second end of the feed lever in an opposing direction.
4. The tooth setter of claim 3 , wherein the connection between the second link arm and the carriage comprises a pin from the carriage seated in a longitudinal recess in the first end of the second link arm.
5. The tooth setter of claim 3 , wherein the blade feeding arrangement comprises:
a feed finger, a first end of the feed finger rotatably attached to the second end of the feed lever, a second end of the feed finger is biased downward toward the top cover to engage with teeth of the saw blade.
6. The tooth setter of claim 5 , wherein the feed finger comprises an adjuster to adjust a length of the feed finger.
7. The tooth setter of claim 1 , wherein the second end of each plate further comprises:
a recess in the inner face of the plate, adjacent the setting finger;
wherein the plates are arranged such that the setting finger from the first plate opposes the recess of the second plate creating a first setting position, and the setting finger of the second plate opposes the recess of the first plate creating a second setting position.
8. The tooth setter of claim 7 , wherein at least one of said first plate and said second plate comprises a finger adjuster to adjust a distance the setting finger extends outward from the inner face of the plate.
9. The tooth setter of claim 8 , wherein the other of said first plate and said second plate comprises a finger adjuster to adjust the distance the setting finger extends outward from the inner face of the plate.
10. The tooth setter of claim 7 , wherein at least one of said first plate and said second plate further comprises a sensor arranged in the recess that detects the setting of the tooth.
11. The tooth setter of claim 7 , wherein at least one of said first plate and said second plate comprises a bend plate immediately below the recess.
12. The tooth setter of claim 7 , wherein each of said first plate and said second plate comprises a sensor arranged in the recess that detects the setting of the tooth.
13. The tooth setter of claim 7 , wherein each of said first plate and said second plate comprises a bend plate immediately below the recess.
14. The tooth setter of claim 1 , wherein the first end of each plate comprises a follower, the follower being seated in the channel.
15. The tooth setter of claim 1 , further comprising guides on the top cover that define a space therebetween to receive the saw blade, the guides are arranged on the top cover to direct the saw blade to a space between the opposing plates.
16. The tooth setter of claim 1 , wherein the carriage is slidably mounted on rails.
17. The tooth setter of claim 16 , wherein one end of the rails is secured to a support or to the housing, and a second end of each rail has a stop.
18. The tooth setter of claim 1 , wherein the actuator is a manually operated lever.
19. The tooth setter of claim 1 , wherein the actuator is driven by a motor.