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Loosen this knob, raise or lower the dop arm to the desired cut angle, tighten the knob. At the approximate center 
of the pivot plate is a fine adjust knob used to set the cut angle.

  

 

(14) PIVOT BLOCK (Fig 9) 
 

The Pivot block pivots around the Pivot Axis and carries the Dop Arm (Quill) assembly. It swings through just over 

180 degrees.  
 

 

Fig 9 
 
(15) INDEX PAWL and PLATE. 

This Plate is secured to the Pivot Block and carries the Index Pawl and the Dop Arm. Micro adjustment, (cheating) 
is achieved by a Knob on the left of the Index Pawl Spindle. On this Knob is a setscrew that is aligned with a notch 
on the Index Pawl Plate. This is the setting for faceting.  
The Index pawl is depressed to lift the Index Pin out of engagement with the Index Wheel and can be clipped back 
under a Knurled Knob for freewheeling the Index Wheel. 
 

(16) DOP ARM  (Quill) 

This is carried on two lightly pre-loaded ball bearings. The preloading prevents any end or side play in the Dop Arm. 
The Arm carries the Index Wheel that is screwed to a brass ring by two screws. This ring has a grub screw for 
locking the Wheel to the Arm.  To change Index Wheels the two screws are removed. The Dop Arm is bored to 
receive the Dops. A large flat point grub screw locks the Dop in the quill. 

 
(17) INDEX WHEELS. 

The machine is fitted with a 96 tooth Index Wheel as standard. 80 and 72 tooth wheels are provided. The Wheels 
are secured with two small screws. These must be kept tight.  

 
(18) DOPS. 

Dops are flat cone and “V” form. The dops have a 45º chamfer milled at the end that is used for location in the Dop 
Arm and the Transfer Block.  A “D” dop for setting the cheater square with the Master Plate, a 45

0

 Angle Dop and a 

large Flat Top Dop 
 

Summary of Contents for Patriot

Page 1: ...al Angle Readout Includes 96 80 72 Tooth Index Wheels 12 Brass Dops 3mm to 8mm in Flat Cone and V Form 45 0 Angle Dop Two Setting Dops Transfer Block Available From Jersey Instruments Phone 256 883 89...

Page 2: ...ll show Err This is your prompt to lower the dop arm to its vertical down position and press the toggle switch on the right side of the control box The machine is now calibrated As described in later...

Page 3: ...reset to zero As you approach the desired cut angle the display will approach zero You can cut to the zero mark or stop short to allow for polishing to bring the facet in to the desired angle The prop...

Page 4: ......

Page 5: ...he controller however the unit uses lethal voltage If you are curious and just have to look inside the control box PLEASE disconnect the power cord FIRST Inside you will find a motor speed controller...

Page 6: ...should be switched off Fig 3 Fig 4 6 WATER BOTTLE This is mounted on a post at the back of the machine and is fitted with a drip Tap and tube The bottle can be swiveled around and lifted off There is...

Page 7: ...This stop nut is factory set Fig 6 10 VERTICAL ADJUSTMENT SLEEVE Fig 7 This is a bronze bushed sleeve fitted over the Post A large graduated Knob at the top provides fine Up and Down feed A steel bal...

Page 8: ...cause unnecessary wear on the vertical column Fig 9 Fig 8 12 PIVOT PLATE This Plate carries the Pivot Bearing and is secured to the Vertical Slide with four clamp screws and one jack screw These scre...

Page 9: ...d can be clipped back under a Knurled Knob for freewheeling the Index Wheel 16 DOP ARM Quill This is carried on two lightly pre loaded ball bearings The preloading prevents any end or side play in the...

Page 10: ...ex Pawl pin in the 96 tooth of the Index Wheel and zero the Index Cheater The head is then lowered until the Flat Top Dop sits flat on the master plate If not adjust the Angle setting and the Index Ch...

Page 11: ...Dop Fig 12 25 SETTING THE ANGLE Always approach the Angle Setting from the same direction Do not come back to it 26 POSITIONING THE HEAD The Post is swung to bring the end of the Dop Arm over the Lap...

Page 12: ...dex Pawl while putting a little finger pressure on the top of the Dop If the Index Wheel kicks then the Dop is not sitting flat 29 INDEXING When indexing depress the Pawl sufficiently to clear the tee...

Page 13: ...for aligning the Facets when cutting if necessary The cheater also allows the operator to completely polish the Facets Turning the Knob towards the operator rotates the Dop counter clockwise turning...

Page 14: ...ted ball bearings Pivot Permanently lubricated ball bearing Dop Arm Permanently lubricated ball bearings Swing Arm Requires no lubrication Vertical Adjustment Sleeve Lift the assembly and apply grease...

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