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...that after Walter Hunt patented the safety pin in 1849, he sold the rights to it for $400?
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| Number | Title | Issue Date |
| 7441497 | Wringing device A wringing device is used to expel fluids from a flexible container contained within an intermediate bulk container (IBC). The wringing device includes a support frame and a carriage movably coupled to the support frame for supporting components thereof. The wringin... | 10/28/2008 |
| 7398729 | Compacting press for bulk materials A compacting press for powdery to granular bulk materials, comprising two counterrotating rollers (1,2), arranged in one plane, which rollers (1,2) are held in a roller housing (11). At least one of the two rollers (1,2), preferably the t... | 07/15/2008 |
| 7340998 | Arrangement for closing roll nips A multi-roll calender (1) has one or several sets of rolls (2) attached to a frame (7) so that each set of rolls has at least three rolls. At least the first roll (3; 31) and the last roll (3; 32) have casings which can be moved to... | 03/11/2008 |
| 7326322 | Apparatus and method for degrading a web in the machine direction while preserving cross-machine direction strength An embossing system is provided for embossing a web having a first embossing roll having embossing elements and a second embossing roll having embossing elements, wherein at least a portion of the embossing elements of the first and second embossing rolls are substa... | 02/05/2008 |
| 7024990 | Calender and an arrangement for fastening rolls of a calender A calender and an arrangement for mounting calender rolls, the calender comprising at least two calender nips (1, 2) formed by at least two stacked rolls (11–14). The rolls are have bearing housings (3–6) by means of which the rolls (11â€... | 04/11/2006 |
| 6996961 | Method and apparatus for conditioning crop materials As crop materials are severed from the field, they pass through two successive pairs of counter-rotating conditioning rolls before being returned to the ground. The front rolls are preferably ribbed, metal rolls wherein the ribs of one roll are intermeshed with thos... | 02/14/2006 |
| 6955034 | Crop Conditioner frame with interchangeable rollers The apparatus is a crop conditioner frame in which both conditioning rollers and the torsion bar assembly forcing them together are interchangeable with other such parts of different designs. The interchangeability of the rollers is accomplished by simultaneously ch... | 10/18/2005 |
| 6892631 | Process for operating a calender Process for operating and calender with a roll stack having a plurality of rolls, including two end rolls arranged to form a press plane and middle rolls arranged between the end rolls. The plurality of rolls includes at least one elastic roll. The process includes ... | 05/17/2005 |
| 6711996 | Hay conditioning apparatus A hay conditioning apparatus includes a first roller which is rotatably mounted in a fixed mounting and a second counter-rotating (compression) roller which is rotatably mounted in connection with a moveable mounting. The compression roller is in rolling contact wit... | 03/30/2004 |
| 6705216 | Calender Calender including at least one roll stack having a plurality of rolls arranged to form at least one nip, a stand arrangement having a stand located at each axial end of the at least one roll stack, and antifriction bearings arranged to support the plurality of roll... | 03/16/2004 |
| 6698340 | Calender and process to treat a material web Calender and process for treating a web with a roll stack that includes a plurality of rolls having two end rolls and several intermediate rolls arranged between the two end rolls. The plurality of rolls are arranged such that adjacent rolls, including a ... | 03/02/2004 |
| 6668711 | Elastic roller, method for producing same device for smoothing paper and method for smoothing paper The present invention concerns an elastic roller for smoothing a paper web, wherein the roller has a hard metal core, an elastic matrix coating material thereon and an outer layer of memory metal, and is comprised especially of metal is described. The pre... | 12/30/2003 |
| 6588332 | Roller group In a group of rolls for a calender for processing material webs, comprising at least two rolls each having a roll body made of a cast or forged iron material, at least one of the roll bodies consists of chilled cast iron or shell-chilled cast iron. One or... | 07/08/2003 |
| 6578473 | Calender with adjustable roll supports A supercalender has a top roll, a bottom roll, and a plurality of intermediate rolls. The intermediate rolls are mounted to support frames by pivot arms. The pivot radius defined by the arms is at least about 21/2 times the diameter of the largest interme... | 06/17/2003 |
| 6571695 | Article compacting device An apparatus for the compaction of articles, e.g., disposable metal cans or disposable plastic bottles, includes a pair of mutually counter-rotatable, interacting squeeze rollers, wherein the first roller has a fixed support and wherein the second roller ... | 06/03/2003 |
| 6171629 | Methods and apparatus for joining dough blocks An apparatus for joining dough blocks to form a continuous dough sheet. The dough blocks are cut from a dough mass and drop into a space between first and second groups of rollers. The first and second groups of rollers include horizontally-paired rollers... | 01/09/2001 |
| 6039840 | Roll for a supercalender and method for calendering a web A paper machine roll, in particular a roll for a supercalender, which includes a frame and a polymer coating on the frame. The deformability of the polymer coating on the roll increases within a certain axial distance from the middle area of the roll towa... | 03/21/2000 |
| 5961899 | Vibration control apparatus and method for calender rolls and the like A vibration control apparatus (20) and method for a calender (18) for controlling vibration between two or more rolls (ex. 22, 24) which controls vibration induced thickness variations in a medium (27) exiting from the nip. The apparatus (20) includes a f... | 10/05/1999 |
| 5674543 | Dough sheeter with improved pinch-point adjustment mechanism An improved pinch-point gap adjustment mechanism for a dough sheeter having two counterrotating rollers, one of which is horizontally moveable, is disclosed. The pinch-point gap adjustment mechanism incorporates a lever-action arrangement to provide mecha... | 10/07/1997 |
| 5640901 | Nip roller installation In a nip roller apparatus, a drive roller and an idler roller are arranged for conveying an object. The rollers include shafts having toothed wheels mounted thereon for transmitting rotation of the drive roller to the idler roller. A pressing device is pr... | 06/24/1997 |
| 5471921 | Apparatus for dewatering and lossening raw biopulp An apparatus for production of dewatered and loosened biopulp, wherein precrushed raw biopulp is press fed by pistons (2) against a pair of counter-rotating press rolls (4, 5) between which the biopulp is dewatered. The pulp is then fed into a backpressur... | 12/05/1995 |
| 5386769 | Adjustable press roller using silicone elastomer as pressure medium A mechanism for regulating the external surface of an elastically deformable metal shell includes a temperature control for controlling roll sections and thus pressure controlling for controlling bending of a roller. The assembly provides a press roller w... | 02/07/1995 |
| 5329844 | Calender with pivotally displaceable roll A calender in a paper or board machine comprises a calender frame, at least two soft-faced rolls mounted on the calender frame and at least one hard roll mounted on the calender frame in a manner that allows the hard roll to be displaced between a first p... | 07/19/1994 |
| 5305689 | Tension bars for roll press for paper making machine The axes of a first press roll (1) and of a second press roll (3) lie in a press plane (E). Each of the press rolls has a respective journal (2, 4). The first press roll is supported in a first bearing bracket (5). The second press roll rests in a second ... | 04/26/1994 |
| 5302203 | Apparatus for pressing webs usually in contact with a flowable substance A web of flexible material is pressed between a counterroll and a pressing roll to which the pressing force is applied by magnetic, fluid-pressure or switching means via a force-multiplying lever arrangement.... | 04/12/1994 |
| 5300184 | Press roll apparatus for manufacturing laminated glass A press roll apparatus temporarily or finally bonds two glass sheets with an adhesive intermediate film sandwiched therebetween to manufacture a laminated glass. The press roll apparatus has a plurality of drive roll units each having a pair of upper and ... | 04/05/1994 |
| 5053979 | System and method for automatically controlling vehicle speed so as to trail a preceding vehicle A system for automatically controlling vehicle speed calculates the relative speed between the subject vehicle and another preceding vehicle on the basis of the intervehicle distance detected by an intervehicle distance detector. One of a number of relati... | 10/01/1991 |
| 5038678 | Calender, in particular a supercalender with multiple relief devices The invention concerns a calender, in particular a supercalender, on whose frame (1) a set of rolls (2) is mounted, which comprises an upper roll (3), a lower roll (4), and several intermediate rolls (5) placed between the upper roll and the lower roll. T... | 08/13/1991 |
| 5033257 | Conditioner roll tension system A mower conditioner includes a main frame having a header connected thereto by a four bar linkage which permits the header to float over the ground during harvesting operation. The header carries upper and lower conditioner rolls with the opposite ends of... | 07/23/1991 |
| 5012730 | Press roll for paper machines Press roll with a tubular cylinder, featuring on each of its two ends a roll head with a journal, specifically for use in a roll press consisting of the press roll and a backing roll with controlled deflection, for the treatment of web type material such ... | 05/07/1991 |
| 4967653 | Calender having displaceable bearing parts Support of a nip relieving device to compensate for overhanging weights at an elevationally displaceable bearing part of an intermediate roll of the calender is effected relative to the stand of the calender by an elevationally displaceable support member... | 11/06/1990 |
| 4961303 | Apparatus for opening conditioning rolls A mechanism for forcing apart the upper and lower rolls in a crop conditioning apparatus is disclosed wherein the torsion bar operably associated with the upper conditioning roll to assert a biasing force thereon to urge the upper roll toward engagement w... | 10/09/1990 |
| 4925382 | Roller press for compacting fine-grained salts into sheets A roller press for compacting fine-grained chemicals, especially salts, into sheets, having synchronously driven rollers with two axially spaced pressing surfaces on ring elements being provided with radial shoulders at both of their ends. Screw feeders f... | 05/15/1990 |
| 4901637 | Equipment in the system of rolls in a supercalender The invention concerns an equipment in the system of rolls in a supercalender for equalizing the profiles of linear loads between the rolls. In the normal way, the system of rolls comprises an upper roll, a lower roll, several intermediate rolls placed be... | 02/20/1990 |
| 4823690 | Roll calender with Nip relieving devices Between an uppermost roll and a lowermost roll there are arranged intermediate rolls mounted with their axles in levers. These levers extend across the width of the roll stand of the calender and are vertically pivotably suspended at a pivot at the roll s... | 04/25/1989 |
| 4768434 | Pressure development apparatus for imaging sheets Roll-type pressure-treating apparatus, for subjecting sheet or web material to a uniformly high and uniform pressure across a nip, includes a pair of annular pressure rolls mounted in nip-defining relation to each other. Each of the pressure rolls has rec... | 09/06/1988 |
| 4670102 | Tandem calender A tandem calender is provided at the output end of a paper machine which includes two single stack nips in-line. The first nip is formed by a pair of steel rolls which are lightly loaded and the second nip is formed by a steel roll and a plastic covered r... | 06/02/1987 |
| 4534829 | Calender A supercalender at the output of a paper machine includes two pairs of zone-wise deflection-controlled rollers. Each pair has a hard surface roller and a soft roller with an elastic outer layer or covering having a minimum hardness of 85° Shore D. The ha... | 08/13/1985 |
| 4519188 | Linkage for equalizing conditioning roll pressure A linkage for equalizing the biasing forces exerted on the opposing transverse ends of the upper conditioning roll in a mower-conditioner is disclosed wherein a separate torsion bar is utilized to bias each respective end of the upper conditioning roll to... | 05/28/1985 |
| 4464986 | Device for reducing the vibration of a press section constituted by two or more rolls pressed one against the other in a paper manufacturing machine A mechanism for a press section of a papermaking machine including a press having first and second press rolls forming a pressure loaded press nip therebetween with a support frame and end bearings for the first roll with a support carrying the end bearin... | 08/14/1984 |
