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." Yet another example is labeled, "The American Sash Trimmer / Patented / Made by / Manco Mfg. Co. / Bradley, Illinois".
		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
1,583,351	May. 04, 1926	Grinding Machine	James N. Heald	Worcester, Worcester County, MA	This patent number was on a Brown & Sharpe surface grinder Patent Plate. Abstract: he present invention relates to grinding machines. The invention resides in the novel combination and arrangement of parts hereinafter fully described, of especial utility in the construction and operation of a grinding machine adapted to operate on cylindrical or similar surfaces. Claim: In a grinding machine, the combination with a table for supporting the work, of means operable by fluid pressure for reciprocating said table, an electric motor carried by said table for rotating the work, and a common control device for said motor and the fluid pressure supply.
		Grinding Machine	Albert Turner	Worcester, Worcester County, MA
1,695,759	Dec. 18, 1928	Grinding Machine	Prentice Conradson	Evansville, Rock County, WI
RE17,477	Nov. 05, 1929	Grinding machine	James N. Heald	Worcester, MA	This patent number has been seen on a Brown & Sharpe No. 5 surface grinder.
		Grinding machine	Albert Turner	Shrewsbury, MA
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
3,416,407	Dec. 17, 1968	Loading Apparatus for Reciprocating and RotatingShaft	Howard W. Renner	Worcester, Worcester County, MA	Abstract: This invention has to do with a loading apparatus arranged to introduce workpieces into the operating area of a work machine tool and consisting of a shaft which is both slidably and rotatably carried in the machine tool housing, separate actuators are provided for rotating and sliding the shaft and means is provided to cause these actuators to operate in a cycle for the loading operation. The art of loading workpieces into a machine tool has received a considerable amount of attention in recent years. This is because, generally speaking, the time in which loading takes place is a time when the machine is not productive; it is important, therefore, from the point of view of economics, to reduce this time to a minimum. One such mechanism which is particularly useful for loading the outer races of ball bearings into an internal grinding machine is shown in the patent application of Uhtenwoldt, Ser. No. 533,904, filed Mar. 14, 1966; in this construction, a loading plug is automatically moved longitudinally and rotatably about a longitudinal axis from a low position in alignment with the machine chuck to an upper position in alignment with the workpiece chute pickup point. The loading apparatus is operated automatically by use of a sequential valve which shifts fluid from one operating cylinder to another of the mechanism. Although this apparatus operates effectively, it is expensive, because of the many hydraulic lines that are necessary. With such a complex electrohydraulic control, a certain "amount of time is involved because of the long hydraulic lines which add hydraulic response time to the system. These and other difficulties experienced with the prior art devices have been obviated in a novel manner by the present invention. Claim: A loading apparatus, comprising (a) a base, (b) a shaft slidably and rotatably carried in the base, (c) an arm extending laterally from one end of the shaft and having a workpiece-holding means located a substantial distance from the shaft, (d) a first actuator for rotating the shaft, (e) a second actuator for sliding the shaft, (f) means causing the actuators to move the shaft and the workpiece-holding means in a cycle to successive positions relative to the base, and (g) stop means assuring that the workpiece-holding means has reached one of the said positions before it starts to move to the next successive position in the cycle, the stop means being provided for assuring that the rotative movement of the shaft does not extend beyond a predetermined range and consisting of a cam follower extending from the shaft and a cam plate associated with the base and having guide surfaces to be contacted by the cam follower, the cam plate being a curved plate arranged concentrically of the shaft, the cam follower comprising a roller arranged with its axis perpendicular to the shaft axis, and the guide surfaces comprising edges of the plate such as would Abe generated by a radial line moved first axially only a short distance, secondly radially and axially to generate the inner end of a slot, thirdly axially only a second distance less than the first distance, fourthly radially only through a substantial angle, fifthly axially only a distance equal to the second distance, sixthly axially and radially to generate the inner end of a slot, and seventhly axially only a distance equal to the first distance.
		Loading Apparatus for Reciprocating and RotatingShaft	Herbert R. Uhtenwoldt	Worcester, 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