Did You Know...
...that the x-ray was discovered purely by accident? When German physicist Wilhelm Konrad von Roentgen was experimenting with cathode rays in 1895, he put an activated Crookes tube in a book and went out to lunch. When he returned, he discovered that a key that had also been placed in the book showed up as an image on the developed film!
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| Number | Title | Issue Date |
| 7431637 | Saw-setting machine for saw chain It is to provide a saw chain sharpener such that while a saw chain is clamped at both ends by a holding plate, which is supported forward of a handy type electric motor, so as to stabilize its sharpening posture, a grinding tool such as a round rod-shaped grinding t... | 10/07/2008 |
| 7096757 | Setting device for sawblades Setting device for sawblades, where a saw tooth (10) to be set is bent by contact with a ridge (17) on one among two conical detting rollers (14, 15), while the sawable is squeezed between two cydrical pressure rollers (12, 13) with axes ... | 08/29/2006 |
| 7000514 | Safety systems for band saws Band saws with high-speed safety systems are disclosed. The band saws include a detection system adapted to detect a dangerous condition between a blade and a person. A reaction system performs a specified action such as stopping the blade upon detection of the dang... | 02/21/2006 |
| 6823759 | Method and apparatus for strengthening and leveling a saw blade An apparatus for leveling and strengthening a rim of a saw blade is disclosed which includes a rotatable support for holding a saw blade, a first arm with a contact bearing for contacting a first face of a saw blade mounted in the support, and a second arm with a co... | 11/30/2004 |
| 6543433 | Method and a device for dressing a saw blade A dressing center with a roller unit wherein a saw blade is smoothed. The saw blade is led centrically to an ideal plane between corresponding roller pairs. Each roller pair has a roller with a convex running surface and a roller with a concave running su... | 04/08/2003 |
| 6477884 | Reciprocating saw blade repair device A lightweight, versatile device is provided that can change from a hand held device to a bench top device that reshapes the broken end of a reciprocating saw blade and punches the necessary hole in said blade, thus allowing the blade to be reused.... | 11/12/2002 |
| 6067879 | Procedure and apparatus for straightening a circular-saw blade into a desired shape Procedure for straightening a circular-saw blade (2), in which procedure the blade (2) is mounted on a shaft (3). The geometry of the blade is measured, the measured values are compared with reference values, deformations in the blade are straightened by ... | 05/30/2000 |
| 5946985 | Saw blade tooth form and method therefor A saw blade has a plurality of teeth with each tooth formed by a beveled gullet forming a trailing face, a beveled gullet forming a leading face and a planar surface forming a curved cutting face. The gullets forming the trailing face and the leading face... | 09/07/1999 |
| 5931057 | Apparatus for straightening long saw blades, especially for band saws A machine table (16) on which a saw blade (10) is movable in a direction of movement (A) which essentially conforms to the longitudinal extension of the saw blade is provided with a first measuring station (22) for measuring the saw blade (10) in a measur... | 08/03/1999 |
| 5522283 | Circular saw leveling and tensioning machine A circular saw blade straightening and tensioning machine has a set of straightening and tensioning rollers on both sides of a saw blade. The rollers are mounted on parallel shafts. Each shaft has a hub at its end, comprising a center portion horizontally... | 06/04/1996 |
| 5299472 | Saw blade tipping apparatus A method of and apparatus for mounting hard material tips to a cutter tool such as a saw blade body (6), wherein a gripper/pick-up member/element (4) for handling the tips (8) to be mounted or other material required in the tip mounting operation is movea... | 04/05/1994 |
| 5295417 | Multistep finishing process for saw blade teeth and a saw finishing machine to carry out the process A saw blade (10) is moved stepwise for complementary finishing operations through a first station (20) and a second station (40) and is stopped whenever a tooth (12) has reached a desired position at the first station (20). Finishing of a second tooth at ... | 03/22/1994 |
| 5181343 | Apparatus and process for grinding a profile of a band saw Apparatus for the grinding of a profile of a band saw, which apparatus is provided with an abrasive medium disposed above a track along which the band saw is conducted under operating conditions and whereby a relative motion between the band saw and the a... | 01/26/1993 |
| 5100506 | Chemically machined sheet metal cutting tools and method A method is shown for manufacturing a sheet metal tool from a metal blank in which a predetermined pattern of etching resistant material is applied to the back surface of the metal blank to define exposed areas separated by resist areas. A layer of etchin... | 03/31/1992 |
| 5092202 | Apparatus and method for the production of cutter tools Apparatus for securing hard material tips to the teeth of a cutter tool includes a carrier unit for presenting an end of a rod of the tip forming material to a tooth to be tipped, a spring for exerting pressure between the tip forming material and the too... | 03/03/1992 |
| 5016497 | Method and apparatus for grinding teeth in a steel strip to form saws Saws are made by grinding teeth in an edge of a continuously advanced steel strip. The grinding is performed by abrasive members mounted on a frame which is oscillated in an endless path within a plane parallel to a plane of the strip so that the abrasive... | 05/21/1991 |
| 5016498 | Method and apparatus for manufacturing super abrasive cutting saw In the method for manufacturing a super abrasive cutting saw, press molds are formed with uneven portions on the main opposite surfaces. The molds define a space portion for containing the periphery of a cutting saw plate. Two masses of compressed sintera... | 05/21/1991 |
| 4864895 | Method and apparatus for adjusting the true running of the cutting edge of annular saw blades A method to be used for adjusting the radial deviation from the true runn position of the internal cutting edge of annular saw blades and an apparatus for carrying out the method. For this purpose, the radial deviation or out-of-true is first measured as... | 09/12/1989 |
| 4864896 | Method and apparatus for tipping teeth of saw blades Wear-resistant tips, preferably comprising preformed pellets of stellite in square configuration, are welded, cooled and subsequently annealed to a saw tooth at a single machine station in rapid succession. A head assembly manipulates the individual pelle... | 09/12/1989 |
| 4768289 | Cobalt base alloy coating for a guide bar of a chain saw A cobalt base alloy includes the alloy elements of nickel, chromium, tungsten, silicon and carbon with the nickel content being at least 25 percent by weight. The cobalt base alloy is applied as a coating material for guide bars of saw chains. The alloy h... | 09/06/1988 |
| 4709699 | Surgeon's Gigli saw and method A Gigli saw used by a surgeon to cut bones is constructed of a plurality of round wires which have been deformed in a coining stand so that they form one polygonal shape which in the preferred embodiment is square. This square strand is then twisted along... | 12/01/1987 |
| 4693145 | Method of continuously grinding the teeth of saw bands and saw blades A method and device for continuously grinding the teeth of a number of adjacent saw bands using a rotating grinding wheel which is reciprocatingly moveable in a direction transverse to the longitudinal direction of the saw bands. The method comprising low... | 09/15/1987 |
| 4589306 | Saw and method for the manufacture thereof A saw has a plurality of generally V-shaped teeth formed by punching. The sides of each tooth define cutting edges. A bevel extends along each cutting edge. The bevels are formed by punching with a tool having a surface oriented non-perpendicular to the s... | 05/20/1986 |
| 4587867 | Control mechanism for a machine for working on saws A machine for working on saws has a mounting (20) for a saw blade (10), an advance mechanism (30) for advancing the saw blade (10) stepwise through one or more tooth spacings, and a machining device (40) which, after each completed advance, carries out at... | 05/13/1986 |
| 4578984 | Machine for deforming the gullets of saw blades to improve resistance to fatigue stress A machine to deform the gullets of saw blades, thereby increasing the resistance of the saw blade to fatigue cracks, by compressing the gullet bottom, the compression being accomplished by pressing the saw blade between one fixed die and one which is pres... | 04/01/1986 |
| 4366728 | Machine for repairing hard alloy tipped saw blades A machine for the repair of alloy-tipped saw blades is provided. According to the invention, a damaged circular saw blade can be completely repaired at one location. The saw blade is clamped in the machine. Brazing and grinding tools are positioned for re... | 01/04/1983 |
| 4358045 | Tip positioning brazing fixture A brazing fixture having an arrangement for indexing the teeth of a saw blade successively into register with a laying block. The block is so constructed as to accurately locate the pre-top-ground tips on successive teeth so that the tips can be brazed to... | 11/09/1982 |
| 4348919 | Attachment and method for grinding and filing chain saw bars An attachment is provided which includes a support member of L-shaped cross section having a first aperture in one leg through which a grinding wheel may extend and a second aperture in the other leg for receiving the shaft of the grinding wheel. An adjus... | 09/14/1982 |
| 4336725 | Apparatus for reproducing coded contour shapes in saw blades Apparatus is provided herein for accepting a severed end of a saw blade into a clamping and squaring mechanism over a contoured die set. The die set is located immediately below a plunger slidably mounted through a supporting bridge so that force imparted... | 06/29/1982 |
| 4335630 | High-speed manufacturing system for saber sawblades and the like An apparatus for rapidly manufacturing elongate sawblades, such as saber sawblades, from a continuous band of metal. All sequential steps of the manufacturing operation, including tooth-cutting, deburring, tooth-setting and shank-forming are performed pri... | 06/22/1982 |
| 4238977 | Bandsaw grinder blade support Disclosed is an improved bandsaw grinder comprising the combination of an improved means for supporting at least a portion of a bandsaw blade in the vertical position as the teeth of the bandsaw blade are being ground, means to intermittently advance the ... | 12/16/1980 |
| 4191074 | Chain saw bar guide alignment system A system for aligning and regapping the guide grooves on a chain saw guide bar which includes a suitably adapted handheld swaging tool uniquely designed to return bent or worn guide grooves to the correct position and separation. The swaging tool contains... | 03/04/1980 |
| 4175452 | Machine for the mechanical working of band saws A method is disclosed wherein the teeth of a saw are set and, after setting a certain number of teeth and simultaneously with setting the last tooth, the saw blade is cut off and the cutting tool is withdrawn from the cutting zone before the saw is fed al... | 11/27/1979 |
| 4141260 | Apparatus for making saw blades An apparatus and method of making a continuous saw blade having stepped saw segments whereby the cutting teeth in each segment define a cutting edge which is inclined relative to a back edge so that the respective teeth are rendered self-feeding during a ... | 02/27/1979 |
| 4124157 | Brazing fixture A tipping fixture for circular saw blades in which a tip supporter and a saw supporter are mounted for relative adjustment toward and away from one another, and for relative vertical adjustment to facilitate brazing a tip to a tooth held in a stable posit... | 11/07/1978 |
| 3960310 | Apparatus for brazing hardened tips to surfaces The invention relates to an apparatus and method for brazing hardened tips to surfaces as saw blades and the like, wherein the apparatus and method may be performed automatically and in which the hardened tip is held to the surface to which it is joined w... | 06/01/1976 |
