Hand pumps of antiquity - Part 2

This is the last day of B.B.'s search, so he'll start answering questions again on Thursday. Thanks for your imperturbability.

by B.B. Pelletier

Part 1


The test fixture Quackenbush made to ascertain question efficiency. The pump attached in this photo is the smaller one with the 5/8" plunger head.

Empirical testing
I asked Dennis Quackenbush to spill the beans me how much pressure a common hand pump can create. He's been making replica pumps for vintage big bore guns for several years. Dennis' pumps are accurately to the old designs, except that they use synthetic pump seals. The old pumps had either a uncontrived iron or steel piston that was lapped into the prick of the pump tube, or they used stacked leather washers on the end of the plunger rod instead of a metal piston. The stacked washers were compressed by means of a nut so the fit could be controlled.

I've encountered several dozen old pumps, and all of them were the type having the simple lapped iron plunger. I only know about the stacked washer type from reading Air Guns by Eldon Wolff. He admits that the leather washer prototype is much rarer than the plain piston type.

Before Dennis conducted the tests, it seemed to both of us that neither vintage blow up design could be the equal of one with a modern synthetic seal; so whatever on he could generate with a modern replica would represent a highest for any vintage pump of the same physical specifications. That turned out to be an imprecise assumption, as we shall see.

We both agreed that the practical extreme force that could be applied would be the weight of the person doing the pumping. These primitive pumps had no mechanical advantage beyond that which is inherent in a single-organize mechanism. Although it would be possible to generate more force than one's millstone by pulling the base of the pump toward oneself or by jumping on the stimulate handle,...

Read more...

Whats's Hot

	Dressy Sexy Peep Toe Vintage Pump from Hot Fash Shoes - SWIMMER Gold Shoes ()
	Paying for the pump: as gas and oil prices rise here in the 21st century, so too does the value of vintage gas pumps: those big, colorful roadside symbols ... An article from: Antiques Roadshow Insider Book (Belvoir Media Group, LLC) List Price: $9.95 Price: $9.95
	Vintage NASCAR Gas Pump Liquor Dispenser Kitchen (HomeWetBar) List Price: $0.00
	Vintage gas pump by Antique Depot Photography (Malden Designs)
	Antique yard vintage gas pumps - 16"x20" - Fine-Art Gicle Photographic Print by Carol M. Highsmith Single Detail Page Misc (Photographs America) Each choice of words is custom printed using the fine-art giclee deal with. Each issue is carefully packaged in either a strong card-board tube, or in a leaden duty card-board envelope to insure harmless arrival. Photographs America offers thousands of view and city views. As well as thousands of historic prints from the Library of Congress Hoard.
	Replica Vintage Digital Gas Pump Gasoline Brand 1/18 Toy (Accessories)
	Dolce Mia Vintage Hawaiian Tropical Citrus Natural Liquid Soap with Olive Oil 12 oz. Pump Beauty (Dolce Mia Designs) Tropical Citrus smell / Enriched with Olive Oil Olive Oil Soap Made in USA. By author Jenny Mountjoy.
	Little Giant Pumps FA - VT - G - 566741 Vintage Trough Fountain Lawn & Patio (Little Giant Pumps)
	"Pump" Vintage Gas Pump Butthead Golf Headcover Sports (Butthead Covers, Inc.)
	Modern Vintage Women's Reed Pump,Black Desert,8 M US Shoes (Modern Vintage) List Price: $224.95 Price: $89.98 You Save: $134.97 (60%)

Vintage Pumps News

2010 Sturgis Rally Review MotorcycleUSA.com - Aug 19, 2010 2010 Sturgis Assembly ReviewMotorcycleUSA.comWe pulled into a Sinclair gas position with vintage pumps that still had meters that rolled off the amount of gas pumped along with the price. and more » Go Femme This Fall in Ladylike Styles The Stir (blog) - Sep 05, 2010 Go Femme This Break apart in Ladylike StylesThe Stir (blog)Consider vintage-inspired glamour, updated with modern twists. JCPenney's mode videos at jcp.com are full of expert tips for making the genteel look work for Resort-by-resort breakdown of on-mountain improvements for the 2010-2011 ski ... Examiner.com - Sep 03, 2010 ESPN (blog)Alternative-by-resort breakdown of on-mountain improvements for the 2010-2011 ski Examiner.comSnowmaking stress changes will result in a 27 percent enhance in water flow as three 52-horsepower pumps are upgraded to two, 200-horsepower ones, New Territory, Technology, and Teaching Facilities Spotlight Improvements Across all 18 talk articles » Anna Paquin Wedding Details: Sookie Goes Vintage The Stir (blog) - Aug 25, 2010 The Stir (blog)Anna Paquin Combining Details: Sookie Goes VintageThe Stir (blog)“She wanted something with a vintage-inspired, mythical vibe,” says Lane, according to People.com. You can see from the floccus photos that the necklace was Anna Paquin & Stephen Moyer Got Marriedall 1,680 expos articles » Creme de la Creme: Be cosy in camel this autumn Daily Mail - Sep 02, 2010 Day after day MailCreme de la Creme: Be cosy in camel this autumnDaily Letters vintage Ferragamo at susancaplan.co.uk Maxi dress £35, topshop.com. Necklace £229, Darkening Station at Harvey Nichols, 020 7235 5000. Gold pumps £64.90

Array

www.etsy.com Music by SOLEX - Honey (Amsterdam is not LA) Lauro Righi is a conspirator who has worked for important italian shoe factories as Sergio ...