The equiangular spiral antenna /

"Contract AF33(616)-3220 Project No. 6(7-4600), Task No. 40572, Wright Air Development Center."

A unidirectional equiangular spiral antenna /

"Contract AF33(616)-3220 Project No. 6(7-4600) Task 40572 Wright Air Development Center"

Graphics 8; graphics hardware-1469 gear

"Supported in part by grant U.S. AEC AT(11-1) 1469."

The highway spiral,

Reproduced from type-written copy.

Manual on design and application of helical and spiral springs.

"SAE J795."

Manual on design and application of helical and spiral springs.

On cover: SAE standards. TR-9.

Table of 20,000 gear ratios, 1.0000 to 3.0000 /

"A series of twenty thousand ratios was compiled primarily for a filament winding machine with a three-step transmission system."

The sea fisheries of Great Britain and Ireland: an account of the practical working of the various fisheries around the British Islands, with illustrations and descriptions of the boats, nets, and other gear in use.

Previously issued as Sea fisheries, with Salmon fisheries by Archibald Young.

The pattern maker's assistant; embracing lathe work, branch work, ore work, sweep work, and practical gear construction; the preparation and use of tools; together with a large collection of useful and valuable tables.

Mode of access: Internet.

Flight evaluations of the effect of variable spiral damping in a JTB-26B airplane.

"Contract no. NO(s) 56-793-c."

Towing gear, chapter 25 ...

"This chapter, revised April 1945, supersedes chapter 25, Bureau of ships manual, dated 1 October 1942."

Dynamic loads on gear teeth,

Mode of access: Internet.

In memoriam Ezekiel Gilbert Gear, D. D. 1793-1874, priest of the Episcopal church and pioneer missionary of Christ in the United States ; a brief sketch of his ministry.

Autographed from type-written copy.

Investigation of centrifugal pumps : Part II, Experiments with a six inch horizontal centrifugal pump, comparing the efficiency of circular and spiral cases and showing the effect of air leakage

Mode of access: Internet.