Heald Machine Co. - Assigned Patents

Manufacturers Index - Heald Machine Co.

Heald Machine Co.
Worcester, MA, U.S.A.
Manufacturer Class: Wood Working Machinery & 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
734,863	Jul. 28, 1903	Sash-trimming machine	James N. Heald	Barre, MA	An example is labeled "The American Sash Trimmer / Patented July 28, 1903 / Made by / The Heald Machine Co. / Worcester, Mass., U.S.A. / No. 1343" Another example is labeled "The American Sash Trimmer, Patented July 28, 1903, Patented April 17, 1906. Made by Mann Corporation, Kankakee, ILL # 5439."
		Sash-trimming machine	Leander S. Heald	Barre, MA
810,426	Jan. 23, 1906	Grinding-machine	James N. Heald	Worcester, MA
		Grinding-machine	Ralph L. Morgan	Worcester, MA
817,866	Apr. 17, 1906	Sash-trimming machine	Morgan E. McAfee	Atlanta, GA	An example is reported, labeled, "The American Sash Trimmer, Patented July 28, 1903, Patented April 17, 1906. Made by Mann Corporation, Kankakee, ILL # 5439."
1,210,280	Dec. 26, 1916	Adjustable shaft-bearing	Aldem M. Drake	Worcester, MA
1,213,167	Jan. 23, 1917	Magnetic chuck and casing	Aldem M. Drake	Worcester, MA
1,223,155	Apr. 17, 1917	Table driving and feeding mechanism for grinding machines	Alden M. Drake	Worcester, MA
1,285,159	Nov. 19, 1918	Grinding Machine	James N. Heald	Worcester, MA	Southgate & Southgate - patent attorneys
1,301,937	Apr. 29, 1919	Belt-tightener	Alden M. Drake	Worcester, MA	Southgate & Southgate - patent attorneys "This invention relates to a belt tightener of a type adapted to simultaneously tighten belts running therefrom in two different directions. This type of belt tightener is found particularly useful in internal grinders and other similar machines in which a rapidly rotating spindle is mounted upon a movable cross-slide."
		Belt-tightener	James N. Heald	Worcester, MA
1,695,759	Dec. 18, 1928	Grinding Machine	Prentice Conradson	Evansville, Rock County, WI
2,903,116	Sep. 08, 1959	Conveying and Banking Track	Wilbur F. Jessup	Cincinnati, Hamilton County, OH
		Conveying and Banking Track	Frederick A. Hohler	Holden, Worcester County, MA
3,867,794	Feb. 25, 1975	Grinding Machine	Edward G. Robillard	Cherry Valley, Worcester County, MA	Abstract: A grinding machine having means for memorizing retraction movement and re-introducing it minus a preselected amount.
3,874,809	Apr. 01, 1975	Apparatus for Machining Surface of Revolution Having Discontinuites	Robert S. Hahn	Northboro, Worcester County, MA	This application is a continuation of an application filed 05 Jan., 1973, which was a continuation-in-part of an application filed 01 Nov., 1971, which in turn, was a continuation of an application filed 17 Nov., 1969, all now abandoned. Abstract: The present invention relates to a machining apparatus and, more particularly, to a machine tool for use in generating a surface on a workpiece by use of tools formed of ceramic or other hard materials, such as carbide.
3,890,116	Jun. 17, 1975	Grinding Machine	Edward G. Robillard	Cherry Valley, Worcester County, MA	Abstract: A grinding machine with a stepping motor for feed movements, with a slow pulse generator and a fast pulse generator, and with a control means for introducing pulse from the fast generator during one part of the grinding cycle and from the slow generator during another portion of the grinding cycle.
3,893,676	Jul. 08, 1975	Magnetic Chuck	Leon J. Gloshinski	Northboro, Worcester County, MA	Abstract: A machine tool having a magnetic backing plate with segmented elements.
3,898,771	Aug. 12, 1975	Grinding Machine	Martin L. Kuniholm	Worcester, Worcester County, MA	Abstract: A grinding machine of the controlled-force type having a hydraulic system permitting change from low force to high force grinding in which an air trap is provided in the hydraulic system to cause the force to change relatively slowly from low force to high force.
3,902,278	Sep. 02, 1975	Grinding Machine for Generating an Epitrochoidal Surface	Herbert Rudolph Uhtenwoldt	Worcester, Worcester County, MA	Abstract: A grinding machine for generating an epitrochoidal surface or the like, including means for generating a true epitrochoid and for providing for the use of a cam while using the generating means for maintaining normalcy and preload of the cam against a cylindrical follower.
		Grinding Machine for Generating an Epitrochoidal Surface	Richard Earl Crossman	Leominster, Worcester County, MA
3,913,277	Oct. 21, 1975	Grinding Machine	Robert S. Hahn	Northboro, Worcester County, MA	Abstract: This invention relates to a grinding machine making use of a closed-loop control of grinding force. In the control system, data on wheel size and wheel dullness are used to continuously determine grinding rate.
		Grinding Machine	Richard P. Lindsay	Marlboro, Middlesex County, MA
3,916,576	Nov. 04, 1975	Grinding Machine	Alfred T. Blackburn	West Boylston, Worcester County, MA	Abstract: A grinding machine having a gage with a digital readout.
		Grinding Machine	Herbert R. Uhtenwoldt	Worcester, Worcester County, MA
3,945,694	Mar. 23, 1976	Toolhead	Bernard D. Vaillette	Leominster, Worcester County, MA	Abstract: A toolhead having a spindle mounted in axially spaced bearings wherein one of the bearings is allowed to slide axially during dynamic effects on the bearings or thermal expansion and contraction of the spindle, the axial movement being made possible by the provision of rows of barrel-shaped rollers.
3,965,765	Jun. 29, 1976	Pulley	Bernard D. Vaillette	Leominster, Worcester County, MA	Abstract; A pulley whose outer surface is in the form of three tapered portions selected for use with a flat belt.
		Pulley	William E. Zastawny	Grafton, Worcester County, MA
3,977,126	Aug. 31, 1976	Grinding Machine	Frederick A. Hohler	Holden, Worcester County, MA	Abstract: This invention relates to a grinding machine, and more particularly, to a machine for forming annular surfaces of revolution of irregular form.
		Grinding Machine	Edmund E. Woldyka	Saxonville, Middlesex County, MA