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ATTACH THE LOWER LAMM ASSEMBLY 

Parts: lower lamm assembly 

Hardware: 2X 3/8" x 3-1/2" hex bolts; 2X 3/8" flat washers; 2X 

3/8" barrel nuts
Leave the wrapping materials in place until you have attached 

the lamms. Make sure the hooks on the lower lamms face up. 

From the inside of the left frame side, insert 3/8" x 3-1/2" hex 

bolts and 3/8" flat washers into the two holes for the lower 

lamm assembly (see Figure 2, page 6). Insert a 3/8" barrel nut 

into each extension block. Slide the extension blocks over the 

hex bolts, turning the barrel nuts if needed. Tighten the hex 

bolts securely. 

INSTALL THE STEEL BEAMS

Parts: 3 steel beams with attached hardware
Breast Beam: The breast beam fits into the slots at the top 

of the front uprights (see Figure 2, page 6). Remove the 

hardware so you can remove the packing materials. Insert 

each 3" button head bolt through a fender washer and then 

through the large flat washer. Attach the bolts into each end of 

the beam, securing them about 1/2" deep. Position the beam 

with the bolts over the slots in the front uprights, with fender 

washers on the outside of the frame and large washers on the 

inside. Slide the beam down to the bottom of the slots. Tighten 

the bolts by hand, then use the large allen wrench to secure as 

tightly as possible.
Back Beam: The back beam fits in the fourth hole from the 

top in the rear uprights of the side frames (see Figure 2, page 

6). (Holes closer to the top accept an optional double warp 

beam and optional tension box rail.) Attach one end of the 

back beam at a time. Insert a 3" button head bolt through a 

fender washer, then through the frame side, then through the 

large flat washer. Do not push the button head bolt all the way 

through the washers and frame side. Have a helper raise the 

back beam into position as you align the bolt and the hole in 

the beam. Tighten the bolts loosely at this point. Repeat on the 

other side of the loom. 
Knee Beam: The knee beam fits into holes in the side frames 

directly above the cloth beam. This beam allows for additional 

leg room within the loom, because woven material passes over 

the top of the knee beam to the cloth beam below. Install the 

knee beam in the same way as the back beam. 
Once the back and knee beams are installed, tighten all steel 

beam bolts with the large allen wrench. Tap all six wedges for 

the three wooden cross beams firmly into place again.

INSTALL THE JACK BOX

Parts: jack box
Set the jack box on the top of the loom, lining up the pegs in 

the bottom of the jack box with the holes on the top of the 

frame sides (see Figure 2, page 6). The wooden knobs of the 

jack pivots and locking pins should face the front of the loom, 

and all cords should hang down (Figure 7). Take care that the 

locking pins do not fall out as you maneuver the jack box into 

place.

ASSEMBLE THE SHAFTS AND INSTALL THE  

HEDDLES

Parts for each shaft: 1X shaft top with 2 hooks, 1X shaft bottom 

with 3 eyes, 1X wooden support dowel, 2X long metal shaft 

pins, 2X short metal shaft pins, 2X metal sleeves, heddles 

Do not remove the twist ties from the heddles until you read 
the following instructions.

Each heddle bundle contains 100 heddles. The heddles are 

linked together in a continuous string of heddles. It is safest 

to cut the heddles apart only after heddles are installed on the 

shafts. 
You may need to cut apart some heddles before this if you 

want to separate part of the bundle. First, determine how 

many heddles you need on each shaft. Then divide this 

number in half, to determine the number needed on each side 

of the shaft. Place the whole bundle of heddles on two extra 

sticks such as lease sticks (inserted at the space between the 

twist ties). Now undo the twist ties and count out the heddles 

you need. Then re-tie both bundles of heddles separately with 

4 extra twist ties per bundle. 

FIGURE 7: JACK AND LAMM ASSEMBLY

lower lamm assembly

upper (suspended) lamms

shaft suspension cord

jack box

jacks (inside jack box)

yoke cord

jack locking pin

jack pivot

Summary of Contents for CRANBROOK

Page 1: ...CRANBROOK LOOM Assembly Manual Find out more at schachtspindle com Schacht Spindle Company 6101 Ben Place Boulder CO 80301 p 303 442 3212 f 303 447 9273 2020 Schacht Spindle Company Inc 01 20...

Page 2: ...of the same shape HARDWARE Some hardware is already attached to the parts Other hardware has been packaged in labeled bags for the parts they go with You ll also find two Allen wrenches sizes 5 16 an...

Page 3: ...icks not shown 2 2 lease sticks same as packing sticks but with holes not shown 3 3 cross beams front and middle rear with treadle support bar 6 6 wedges for cross beams 1 1 treadle separator beam wit...

Page 4: ...l front middle cross beams rear cross beam with treadle support bar treadle separator beam warp beam hanger blocks jack box cords not shown brake release pedal connector strut shaft top shaft bottom u...

Page 5: ...er swing bar cloth beam treadles treadle separator beam with treadle locks beater upright beater top steel back beam warp beam wheel beater race warp beam steel knee beam worm gear jack box brake hold...

Page 6: ...ises Figure 2 Now insert the middle cross beam in the right side frame and at the same time bring the left side frame into place and support all three cross beams not fully inserted on the left side A...

Page 7: ...heck that the cloth beam spins freely Disengage the worm gear If the cloth beam does not turn freely you will have to remove the cloth beam and remove the washer from the axle on the left side to prov...

Page 8: ...hten The cords should all be looped around the same side of the treadle Install tie up cords for all the holes in each treadle INSTALL THE TREADLES ON THE TREADLE SUPPORT BAR Parts treadle support bar...

Page 9: ...her side of the loom Knee Beam The knee beam fits into holes in the side frames directly above the cloth beam This beam allows for additional leg room within the loom because woven material passes ove...

Page 10: ...en the top and bottom shaft bars tap the top of the shaft firmly with a rubber mallet at the center and two sides to compact the frame Figure 8 When each shaft is assembled hang an upper lamm on it by...

Page 11: ...e loom place the warp beam wheel over the square shaft of the warp beam Figure 10 INSTALL THE WARP BEAM BRAKE RELEASE Parts brake release pedal and connector strut Hardware 1X 1 2 x 5 1 2 hex bolt 3X...

Page 12: ...bar beater top beater race beater uprights Hardware 4X 1 4 20 barrel nuts 4X 1 4 20 x 3 button head bolts 4X 1 fender washers 2X 3 8 x 4 metal locking pins Working on the floor assemble the beater up...

Page 13: ...ATOR BEAM The treadle separator beam is used to regulate the size of the sheds and to ease treadling Adjust the treadle separator beam on a gradual incline higher on the left To determine where to adj...

Page 14: ...t 42 floor shaft suspension cord green mark upper stationary lamm pulls shaft directly down lower lamm makes shaft rise bottoms up 7 9 This figure was originally provided by Madelyn van der Hoogt It h...

Page 15: ...ck shafts since these are most often the culprits The Y cord from the upper jacks to the lower lamm passes in back of the shaft and the upper lamm The cord from the treadle to the upper lamm passes in...

Page 16: ...apron rods Lower shed is uneven Upper lamms not all tied in the black mark Check tie up cords to upper lamms Lift up on shafts to determine which shaft is in error and adjust the tie up cord accordin...

Page 17: ...y To adjust either shorten or lengthen the tie up cord to the suspended upper lamm To shorten the cord attach the anchor peg one notch below the black mark to lengthen attach one notch above the black...

Page 18: ...o the pivot point of the lower lamm it is more difficult to move the lamm If treadles are tied too far away from the pivot point rising treadles are more likely to interfere with sinking lower lamms T...

Page 19: ...wreck anything by moving a clip 11 The loom will function best if you tie up at least eight treadles If you don t need that many for a particular tie up tie the treadles you are not using up to eight...

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