Vulcan Iron Works, Thwaites Bros., Ltd. - Assigned Patents

Manufacturers Index - Vulcan Iron Works, Thwaites Bros., Ltd.

Vulcan Iron Works, Thwaites Bros., Ltd.
Bradford, Yorkshire, England, U.K.
Manufacturer Class: Metal Working Machinery

Patents

This page contains information on patents issued to this manufacturer.

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Patent Number	Date	Title	Name	City	Description
30,157	Sep. 25, 1860	Blower	Philander H. Roots	Connersville, IN	This patent is the genesis of the famous Roots blower. Philander H. Roots applied for an extension on this patent (or rather, on the reissue of this patent), but Roots's own testimony indicated that this design was found to be virtually useless because of excessive wear. An 1866 improvement, patent 56,614, added wooden rims to the pistons, and that is the design that became successful. The patent commissioner also noted that the reissue added new claims that could not be found in the original drawing or description, and therefore any extension would have had to disclaim those new claims.
44,892	Nov. 01, 1864	Improvement in blower-cases	Philander H. Roots	Connersville, IN	See also patent 30,157.
56,614	Jul. 24, 1866	Improvement in cross-heads for blowers	Francis M. Roots	Connersville, IN	The original Roots blower design suffered from rapid wear of the pistons. This invention adds wooden rims to the pistons to reduce friction and wear. This alteration was apparently successful and the Roots blower sold very well afterwards.
		Improvement in cross-heads for blowers	Philander H. Roots	Connersville, IN
RE2,369	Oct. 02, 1866	Improvement in blowers	Philander H. Roots	Connersville, IN	See the text description for the original patent for information on Roots's application for an extension to this patent.
190,301,189	Sep. 24, 1903	Improvements in and relating to direct acting pumps	John Thomas Jennings	, England	The invention is a direct-acting pump that is specially adapted for removing condensate from a steam engine.
99,872	Jul. 03, 1906	Pump	Thomas Henry Collett Homersham	, England
190,522,834	Jul. 26, 1906	Improvements in pumps	Thomas Henry Collett Homersham	, England	See also US patent 861,213, granted a year after this one.
190,522,835	Aug. 16, 1906	Improvements in pumps	Thomas Henry Collett Homersham	, England
861,213	Jul. 23, 1907	Pump	Thomas Henry Collett Homersham	, England	Piston pump where pumping rate is varied without varying stroke length; instead, a varying part of the full stroke length is rendered ineffective so as to reduced the average pumping rate. This is the US equivalent of British patent 190,522,834.
190,811,671	Aug. 13, 1908	Improvements in and relating to lubricators	Aylmer Augustus Liardet	, England
190,820,615	Sep. 30, 1909	Improvements in apparatus for the dry concentration of crushed ores	Hermann George Christian Thofern	, France
190,823,179	Nov. 30, 1909	Improvements in furnaces for the smelting of ores, residues, and the like, for the obtainment of copper, or other metals, therefrom	Bernard de Saint Seine	, France
952,284	Mar. 15, 1910	Smelting-furnace	Bernard de Saint Seine	, France	Down-blast furnace for smelting ore for copper and other metals.
191,009,626	Dec. 08, 1910	Improvements in or connected with hammers operated by steam, compressed air or other fluid pressure	Thomas Henry Collett Homersham	, England
191,016,929	Jan. 12, 1911	Improvements in or relating to pneumatic power hammers having single acting pump cylinders	Geoffrey Mossman	, England
191,006,776	Jan. 26, 1911	Improvements in or connected with hammers operated by steam, compressed air or other fluid pressure	Charles Edward Johnson	, England
191,115,016	Mar. 15, 1912	Improvements in or connected with regulating or controlling devices applicable among other purposes for controlling dampers for furnaces	Herbert Bullock	, England