Identifier: designofportable00faus (find matches)
Title: Design of a portable pneumatic riveter
Year: 1912 (1910s)
Authors: Faust, Per Alexander
Subjects: Riveting machines Riveting machines Theses
Publisher:
Contributing Library: University of Illinois Urbana-Champaign
Digitizing Sponsor: University of Illinois Urbana-Champaign

View Book Page: Book Viewer
About This Book: Catalog Entry
View All Images: All Images From Book
Click here to view book online to see this illustration in context in a browseable online version of this book.

Text Appearing Before Image:
above floor - The die table shallbe 30 inches above the floor. -3- CHAPTER I. SELECTION OF STYLE OF TOGGLE. The specifications call for a riveter to set 3/4 inch rivetson boiler work, hence, the first step taken was to find the pressure required to do this work. This pressure cannot be determined theoretically. However, it has been determined experimentally by manufacturers of riveters so that the data can be obtained from trade catalogues and standard handbooks. The information in this particular instance was obtained from Kents Mechanical Engineers Hand Book (8th edition) and catalogue Number 10 of the Chester B. Albree Iron Works. The latter gives the following rule P = 150000 A (1) in which P = pressure required and A = area of rivets in square inches. Hence P = 150000 i0.*.75^ = 66270 pounds. 4 This value agrees very closely with that given by Mr. Kentwho gives 66000 pounds. This value will be used in subsequentcalculations. Obviously this pressure is not required thruout the whole
Text Appearing After Image:
stroke, but merely at the end of the stroke so as to give the final squeeze to set the rivet. But since no means were at hand for determining the variation of the required pressure at every point of the stroke, a table, given in the above mentioned catalogue was made use of, The pressures given are plotted against the stroke on page 4. ■ For additional information and in order to determine how closely rival manufacturers agree on this point the die travel was plotted against the piston travel of a Hanna riveter. This curve (shown on page 4) gave what the machine was capable of doing at any point of the stroke. Therefore, a machine designed that was capable of exerting a pressure that varied according tot he Hanna or Albree machine would do the work satisfactorily. This reduces the problem to a selection between the simple levermotion used by the Albree Iron Works, John F. Allen, and several other makers and the more complicated Hanna motion. The Hanna toggle motion was selected more for the studesignofportable00faus

Note About Images