IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0706155
(2000-11-03)
|
우선권정보 |
GB-19980003425 (1998-02-18) |
발명자
/ 주소 |
|
출원인 / 주소 |
- Shandon Scientific Limited
|
대리인 / 주소 |
Fulwider Patton Lee & Utecht, LLP
|
인용정보 |
피인용 횟수 :
15 인용 특허 :
10 |
초록
▼
An automatic microtome is disclosed which comprises a base, a knife-holder mounted on the base for supporting a microtome knife, a specimen holder mounted for longitudinal movement relative to the base towards and away from the knife-holder and also mounted for transverse movement relative to the kn
An automatic microtome is disclosed which comprises a base, a knife-holder mounted on the base for supporting a microtome knife, a specimen holder mounted for longitudinal movement relative to the base towards and away from the knife-holder and also mounted for transverse movement relative to the knife holder for displacing a specimen held by the specimen holder relative to a knife mounted in the knife holder for cutting sections from such specimen. The knife holder is mounted directly on the base without provision for adjustment of the position of the knife holder on the base such as to vary the location of the knife edge in relation to said edge, and the specimen holder is designed to provide enhanced stability over a wide range of longitudinal positions the specimen holder. Thus, the specimen holder comprises a slide mounted for longitudinal movement in a bearing arrangement including first and second bearing elements at longitudinally spaced positions along the slide, and limiting transverse movement of the slide in one direction and a third bearing element at a longitudinal position intermediate the first-mentioned longitudinally spaced positions and biased towards the slide so as to urge the latter into engagement with said first and second bearing elements. The knife holder and base have cooperating arcuate bearing surfaces permitting angular movement of the knife holder relative to the base about the axis of curvature of the bearing surfaces with concomitant sliding movement of one of said arcuate surfaces over the other. A locating device is adjustably secured to the knife holder for cooperation with a datum provided on the base to ensure that with the locating device fixed to the knife holder the angular position of the knife holder on the base at which the locating device cooperates with the datum can readily be established.
대표청구항
▼
An automatic microtome is disclosed which comprises a base, a knife-holder mounted on the base for supporting a microtome knife, a specimen holder mounted for longitudinal movement relative to the base towards and away from the knife-holder and also mounted for transverse movement relative to the kn
An automatic microtome is disclosed which comprises a base, a knife-holder mounted on the base for supporting a microtome knife, a specimen holder mounted for longitudinal movement relative to the base towards and away from the knife-holder and also mounted for transverse movement relative to the knife holder for displacing a specimen held by the specimen holder relative to a knife mounted in the knife holder for cutting sections from such specimen. The knife holder is mounted directly on the base without provision for adjustment of the position of the knife holder on the base such as to vary the location of the knife edge in relation to said edge, and the specimen holder is designed to provide enhanced stability over a wide range of longitudinal positions the specimen holder. Thus, the specimen holder comprises a slide mounted for longitudinal movement in a bearing arrangement including first and second bearing elements at longitudinally spaced positions along the slide, and limiting transverse movement of the slide in one direction and a third bearing element at a longitudinal position intermediate the first-mentioned longitudinally spaced positions and biased towards the slide so as to urge the latter into engagement with said first and second bearing elements. The knife holder and base have cooperating arcuate bearing surfaces permitting angular movement of the knife holder relative to the base about the axis of curvature of the bearing surfaces with concomitant sliding movement of one of said arcuate surfaces over the other. A locating device is adjustably secured to the knife holder for cooperation with a datum provided on the base to ensure that with the locating device fixed to the knife holder the angular position of the knife holder on the base at which the locating device cooperates with the datum can readily be established. ndicator mounted on the carriage at a location substantially midway between the first and second lights beams. 6. The cutting table of claim 4 wherein the scale is dimensioned in half-scale units. 7. The cutting table of claim 6 wherein the scale has a zero reference in substantial alignment with the linear cutting path. 8. The cutting table of claim 1 further comprising a track supported by the frame and guiding the cutter along the cutting path. 9. The cutting table of claim 8 wherein the cutter is motorized. 10. A cutting table for cutting pieces of fabric comprising: a frame; a table surface mounted on the frame and adapted to support the fabric; an edge guide adapted to receive an edge of the fabric; a cutter manually movable along a linear cutting path substantially perpendicular to the edge guide; a carriage mounted on the frame to be manually movable in a direction substantially perpendicular to the cutting path; first and second light emitting devices emitting respective first and second lights in a direction substantially parallel to the linear cutting path; a manually powered drive mounted on the carriage and supporting the first and second light emitting devices in a spaced apart relationship, the drive being manually operable to move the first and second light emitting devices through equal displacements in opposite directions substantially perpendicular to the linear cutting path; a scale mounted on the frame; and an indicator mounted on the carriage at a location substantially midway between the first and second lights. 11. A method of cutting a piece of fabric having four edges comprising: manually placing the fabric on a table surface to locate a first edge against an edge guide, and a second, adjacent edge across a linear cutting path substantially perpendicular to the edge guide; manually moving first and second lightemitting devices to positions where the first and second light emitting devices project respective first and second lights onto the fabric at locations providing a desired dimension of the fabric; manually moving a cutter along the linear cutting path identified by the first light to cut a second edge of the fabric substantially perpendicular to the manually moving the fabric on the table surface to locate a third edge, opposite the first edge, against the edge guide, and to substantially align the second edge of the fabric with the second light; and manually moving a cutter along the linear cutting path to cut a fourth edge of the fabric substantially parallel to the second edge, the distance between the second and fourth edges being substantially equal to the desired dimension of the fabric. 12. The method of claim 11 further comprising: manually moving the pair of light emitting devices to position the first and second lights equidistant from a desired center line of the fabric; and manually moving the pair of light emitting devices to locate projections of the first and second lights on the fabric at the desired dimension. 13. The method of claim 12 further comprising: manually moving a carriage supporting the pair of light emitting devices to a carriage position where the first and second lights are equidistant from a desired center line of the fabric; manually locking the carriage at the carriage position; and manually moving the pair of light emitting devices with respect to the carriage to locate the projections of the first and second lights on the fabric at the desired dimension. 14. The method of claim 13 further comprising manually moving the pair of light emitting devices simultaneously through equal increments an in opposite directions to locate the projections of the first and second lights on the fabric at the desired dimension. 15. A method of cutting a piece of fabric having four edges comprising: manually placing the fabric on a table surface to locate a first edge against an edge guide, and a second, adjacent edge across a line ar cutting path substantially perpendicular to the edge guide; manually moving first and second light emitting devices to positions where first and second lights from respective first and second light emitting devices are substantially equidistant from a desired center line of the fabric; manually moving a cutter along the linear cutting path identified by the first light to cut a second edge of the fabric substantially perpendicular to the first edge; manually moving the fabric on the table surface to locate a third edge, opposite the first edge, against the edge guide, and to substantially align the second edge of the fabric with the second light; and manually moving a cutter along the linear cutting path to cut a fourth edge of the fabric substantially parallel to the second edge, the distance between the second and fourth edges being substantially equal to a desired dimension of the fabric. 16. A method of cutting a piece of fabric having four edges and a pattern located between the edges, the pattern having firstand second alignment guides, the method comprising: manually placing the fabric on a table surface to locate a first edge against an edge guide, and a second, adjacent edge across a linear cutting path substantially perpendicular to the edge guide; manually moving first and second light emitting devices to positions where the first and second light emitting devices project respective first and second lights onto the fabric in substantial alignment with the first and second alignment guides, respectively; manually moving a cutter along the linear cutting path identified by the first light to cut a second edge of the fabric substantially perpendicular to the first edge; manually moving the fabric on the table surface to locate a third edge, opposite the first edge, against the edge guide, and to substantially align the second and first alignment elements with the first and second lights, respectively; and manually moving a cutter along the linear cutting path to cut a fourth edge of the fabric substantially parallel to the second edge, the pattern being substantially centered between the second and fourth edges. 17. A method of cutting a piece of fabric having four edges and a pattern located between the edges, the pattern having first and second alignment guides, the method comprising: manually placing the fabric on a table surface to locate a first edge against an edge guide, and a second, adjacent edge across a linear cutting path substantially perpendicular to the edge guide; manually moving first and second light emitting devices to positions where first and second lights from respective first and second light emitting devices are substantially equidistant from a center line of the pattern; manually moving a cutter along the linear cutting path identified by the first light to cut a second edge of the fabric substantially perpendicular to the first edge; manually moving the fabric on the table surface to locate a third edge, opposite the first edge, against the edge guide, and to substantially align the second and first alignment elements with the first and second lights, respectively; and manually moving a cutter along the linear cutting path to cut a fourth edge of the fabric substantially parallel to the second edge, the first and second alignment guides of the pattern being located substantially equidistant from respective second and fourth edges of the fabric. 18. A method of cutting a piece of fabric having four edges and a pattern located between the edges, the pattern having first and second alignment guides, the method comprising: manually placing the fabric on a table surface to locate a first edge against an edge guide, and a second, adjacent edge across a linear cutting path; manually moving first and second light emitting devices to positions where first and second lights from respective first and second light emitting devices are substantially a
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