Bryant Chucking Grinder Co. - Assigned Patents

Manufacturers Index - Bryant Chucking Grinder Co.

Bryant Chucking Grinder Co.
Springfield, VT, U.S.A.
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
783,099	Feb. 21, 1905	Tub or pail clamp	William Le Roy Bryant	Springfield, VT	"This invention has for its object to provide means for securing to a floor or other support a receptacle having either an open or closed top. The invention has special reference to means for securing a cylindrical vessel or receptacle, such as the tub of an ice-cream freezer, although it may be used for holding a receptacle of any desired form and size and is not limited to use in connection with cylindrical receptacles..."
857,979	Jun. 25, 1907	Tachometer	William Le Roy Bryant	Springfield, VT
925,867	Jun. 22, 1909	Multispindle metal-grinding machine	William Le Roy Bryant	Springfield, VT	This patent is the genesis of the Bryant Chucking Grinder Co. The inventor had been working at Jones & Lamson Machine Co. when he conceived and designed a multi-spindle grinder for second-operation work, i.e., for precisely finishing surfaces that had been turned to rough dimension on a metal lathe. Bryant Chucking Grinder Co. was established at about the time the patent was issued and was located right across the road from Jones & Lamson. "The object of the invention is to provide a machine for grinding and finishing turned work and for forming thereon external or internal tapers or shoulders as the character of the work may require."
983,975	Feb. 14, 1911	Multispindle grinding-machine	William Le Roy Bryant	Springfield, VT	Extensive improvements to patent 925,867.
1,075,756	Oct. 14, 1913	Chuck	William Le Roy Bryand	Springfield, VT
1,290,896	Jan. 14, 1919	Machine for grinding metal	William Le Roy Bryant	Springfield, VT	"This invention has relation to machines for grinding metal, and, while it is more particularly adapted for external grinding, yet there are certain features thereof which may be employed with a machine for internal grinding. The object of the invention is to secure a greater accuracy in the grinding operation by an elimination of the overhand of the grinding tool, thereby enabling a stiffer and more stable control..."
1,290,897	Jan. 14, 1919	Grinding-tool	William Le Roy Bryant	Springfield, VT
1,575,968	Mar. 09, 1926	Grinding machine	William Le Roy Bryant	Springfield, VT
1,624,211	Apr. 12, 1927	Multispindle internal-combustion machine	William Le Roy Bryant	Springfield, VT
1,755,238	Apr. 22, 1930	Wheel head and the like	William Le Roy Bryant	Springfield, VT
1,827,968	Oct. 20, 1931	Wheelhead and the like	William Le Roy Bryant	Springfield, VT	The inventor was deceased at the time the patent was issued.
1,872,667	Aug. 23, 1932	Work sizing	William J. Bryant	Springfield, VT	"This invention relates to methods and mechanism for accurately determining when work which is being cut reaches the desired size, and also for automatic relieving of the cutting tool from further cutting as soon as the desired size has been reached. In accordance with the present invention the sizing indication is given not by actual measuring of the work itself, as in methods heretofore proposed, but by the position of the cutting portion of the tool when it is positioned for the final cut. This method automatically compensates for any wear of the tool, eliminates the necessity of withdrawing the tool from the work for the presentation of test gages thereto and is independent of the amount of pressure between the tool and the work. In accordance with the present invention, when the tool cutting portion reaches a predetermined position an electric circuit is closed through suitable contacts, one of which preferable has its contact face in a definite relation to the tool face and is moved with the tool and is subjected to the same actions of wear and truing as the tool..."
1,920,290	Aug. 01, 1933	Grinding machine or the like	William L. Bryant	Springfield, VT	The inventor was deceased at the time the patent was issued. "This invention relates to machines of a type commonly employed for grinding where the cutting or grinding tool or the work is carried by an arm rockable about an axis parallel to the work axis to feed and retract the tool from the work, and movable lengthwise of this axis to traverse the work, and more especially where the pivot for the arm comprises a rockable and axially movable bar. It has for an object to provide a hydraulic mechanism for producing certain motions of the arm and more particularly its reciprocation and in which the bar comprises a part of the hydraulic mechanism."
2,076,808	Apr. 13, 1937	Grinding machines	William L. Bryant	Springfield, VT	The inventor was deceased at the time the patent was issued so the patent was signed by his "administratrix", Blanche Brown Bryant.
2,230,442	Feb. 04, 1941	Antifriction slide	Merton H. Arms	Springfield, VT
2,288,508	Jun. 30, 1942	Grinding wheel mounting and control	Joseph B. Johnson	Springfield, VT
		Grinding wheel mounting and control	Merton H. Arms	Springfield, VT
2,330,686	Sep. 28, 1943	Tool Spindle with Removable Projection	Elton S. Cornell	Charlestown, Sullivan County, NH
		Tool Spindle with Removable Projection	Charles N. Williams	Springfield, Windsor County, VT
2,363,077	Nov. 21, 1944	Work Gauge	Willis F. Moore	Springfield, VT	Wright, Brown, Quinby & May - patent attorneys
2,410,038	Oct. 29, 1946	Grinding machines	Leon J. Barnard	Springfield, VT
		Grinding machines	Merton H. Arms	Springfield, VT
2,427,152	Sep. 09, 1947	Gage to test the perpendicularity of the face of a workpiece to its axis	William F. Moore	Springfield, VT
2,432,384	Dec. 09, 1947	Circular Size Gage	Elton S. Cornell	Charlestown, Sullivan County, NH
2,443,895	Jun. 22, 1948	Bevel gear holding fixture	Bernard C. Day	Springfield, VT
		Bevel gear holding fixture	Merton H. Arms	Springfield, VT
2,449,831	Sep. 21, 1948	Chuck	Leon J. Barnard	Springfield, VT
		Chuck	Merton H. Arms	Springfield, VT
2,449,842	Sep. 21, 1948	Work Gauge	Elton S. Cornell	Charlestown, Sullivan County, NH
2,503,674	Apr. 11, 1950	Grinding machine drive	Thor H. Ljunggren	Charlestown, NH
2,535,199	Dec. 26, 1950	Gear holding diaphragm chuck	Bernard C. Day	Springfield, VT	"This invention relates to diaphragm chucks and has for an object to provide a chuck of this type suitable for supporting gears by engagement at their pitch circles so that their central bores are properly positioned for accurate finishing as by grinding."
2,538,289	Jan. 16, 1951	Diaphragm chuck	Merton H. Arms	Springfield, VT
2,538,295	Jan. 16, 1951	Thread size gauge	Elton S. Cornell	Charleston, NH
2,581,001	Jan. 01, 1952	Taper gauge	Elton S. Cornell	Charleston, NH
2,585,533	Feb. 12, 1952	Internal grinding machine with automatic air gauge sizing	William F. Moore	Springfield, VT	"This invention relates to internal grinding machines with automatic sizing mechanism, and has for an object to provide such a machine wherein the final size control is produced by an air gage sizing mechanism, such a mechanism being capable of extremely high accuracy."
		Internal grinding machine with automatic air gauge sizing	Thor H. Ljunggren	Springfield, VT
		Internal grinding machine with automatic air gauge sizing	William J. Bryant	Springfield, VT
2,590,151	Mar. 25, 1952	Bore gauge head	Thor H. Ljunggren	Springfield, VT
		Bore gauge head	Hesslar H. Gates	Charlestown, NH
		Bore gauge head	William J. Bryant	Springfield, VT
2,622,939	Dec. 23, 1952	Carriage mounting	Thor H. Ljunggren	Charlestown, NH
2,635,395	Apr. 21, 1953	Machine for grinding internal surfaces concentric with external surfaces	Merton H. Arms	Springfield, VT
		Machine for grinding internal surfaces concentric with external surfaces	Paul A. Grobey	Springfield, VT
2,706,369	Apr. 19, 1955	Centerless grinding machine with loading and unloading mechanism	Edward L. Dix	Chester, VT	This grinder is "adapted to grind the inner faces of annular internal ball raceway members coaxially with the ball grooves and external peripheries thereof."
2,754,641	Jul. 17, 1956	Work holding and clamping mechanism for centerless grinding machines	Edwin C. Bidwell	Grafton, VT	This work holding is intended for the internal grinder of patent 2,635,395.
2,793,479	May. 28, 1957	Internal grinding machine	Merton H. Arms	Springfield, VT
		Internal grinding machine	Philip C. Durland	Springfield, VT
2,834,160	May. 13, 1958	Grinding machine	Gordon E. Lillie	Bellows Falls, VT	"Several practical and useful systems of sizing devices for grinding and honing machines are known to the art. One such system, for example, is described in U. S. Patent No. 2,585,533, wherein a sensing element periodically enters the hole to be ground from the side opposite that where the tool enters. Such a method has certain limitations, however, particularly in the case of 'blind' holes or where the workpiece otherwise has such configuration that the gauge cannot enter or be used in the described way. In such cases, another method, commonly called 'diamond sizing,' is resorted to. This latter method is described in, for example, U. S. Patent No. 2,429,830, and is dependent on the relative position between the tool and the workpiece for control of the grinding cycle. That is, when a predetermined amount of feed movement has taken place, a suitable stop actuates, for example, a limit switch, and thereby terminates the grinding cycles and conditions the machine for the next phase of said cycle..." The invention enhances this diamond sizing method by terminating the grinding based on grinding tool pressure against the workpiece.
2,838,885	Jun. 17, 1958	Compensating radial work support for an internal centerless grinder	Roald Cann	Weathersfield, VT	Improved work support for the internal centerless grinder of patent 2,635,395.
2,838,888	Jun. 17, 1958	Compensating radial work support for an internal centerless grinder	John W. Lovely	Springfield, VT
		Compensating radial work support for an internal centerless grinder	Roald Cann	Weathersfield Township, VT
2,952,949	Sep. 20, 1960	Grinding machine	Paul Maker	Springfield, VT
2,981,037	Apr. 25, 1961	Workholder and method for internal grinding	Charles J. Terp	Springfield, VT	This work holder is intended particularly for "manufacturing of sundry parts for office and accounting machines, calculators, cash registers and the like".
3,167,064	Jan. 26, 1965	Grinding wheel truing mechanism	Leon J. Barnard	Springfield, VT