NORDEN.
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Telescope cable drive

The telescope cradle and rate-end cable path linked through sheaves and hollow gudgeons.

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Follow the mechanism

The guided cable carries motion between assemblies while passing through the cradle and cardan pivots.

Eyelets, anchor washers and the eccentric adjustment terminate and adjust the path. The viewer keeps these anchors connected while the mechanism moves.

Geometry follows the cited drawings and photographs. Unmeasured dimensions remain approximate; exploded spacing reveals existing model groups rather than a prescribed disassembly procedure.

Parts in this component

PART · PAGE 100

Telescope cradle assembly

The frame that supports the telescope, its mirror drive, take-up drum and connecting fittings within the sight cardan.

PART · PAGE 100

Cradle mirror and sector drive

The pivoted mirror, open gear sector, integral shaft pinion and supporting brackets beneath the telescope.

PART · PAGE 93

Telescope cable and sheaves

The installed cable path for the M-4-and-up arrangement, with five sheaves, guided passages and secured eyelets.

PART · PAGE 87

Rate-end motor half

The parallel-wound motor, centrifugal governor, breaker arm and transmission of the motor half.

Reference views

Inspect the full sheets as well as detail views. Figure numbers belong to their named document; similar-looking parts may be different variants.

AN 11-30-70, figure 2
AN 11-30-70 · Fig. 2

Atlas copy of original parts sheet retained for identity check. Related revision only.

Lowry norden2.pdf, revised September 1, 1943, figure 51
Lowry norden2.pdf, revised September 1, 1943 · Fig. 51

Printed p.156. Seven separate installation details, not seven sheaves. Detail4 establishes cradle gudgeon, sheaves5/4/3 and right cardan gudgeon; detail7 establishes sheaves2/1. No global installed projection or dimensions.

Lowry norden2.pdf, revised September 1, 1943
Lowry norden2.pdf, revised September 1, 1943

Printed p.157. M-4 and up steps a-d. Soldered cable half loop secured under number5 anchor-screw washer, eyelet and adjacent washer; mirror sector temporarily wedged.

Lowry norden2.pdf, revised September 1, 1943
Lowry norden2.pdf, revised September 1, 1943

Printed p.159 steps e-k. Through front cradle gudgeon, remesh number5 integral shaft pinion and insert taper pin; past4/3/2 around1 and through eyelet, excess around eccentric. Roller zeroing begins below.

Lowry norden2.pdf, revised September 1, 1943
Lowry norden2.pdf, revised September 1, 1943

Printed p.75 explicitly M-3. Separate screw and angular adjustment procedure; tangent and no-double-winding checks. Not a source for M-4 adjustment values.

Lowry norden2.pdf, revised September 1, 1943, figure 52
Lowry norden2.pdf, revised September 1, 1943 · Fig. 52

Printed p.158 ZEROING THE ROLLER. The .006 IN figure is nut-gear clearance, NOT cable or sheave dimension.

Further reference sources